diff --git a/Android.bp b/Android.bp
index 45d022f..43d28c9 100644
--- a/Android.bp
+++ b/Android.bp
@@ -224,7 +224,6 @@
     srcs: ["proguard.flags"],
 }
 
-
 // Library with all the dependencies for building Launcher Go
 android_library {
     name: "LauncherGoResLib",
@@ -253,3 +252,24 @@
     },
 }
 
+// Build rule for Quickstep library
+android_library {
+    name: "Launcher3QuickStepLib",
+    srcs: [
+        ":launcher-src-no-build-config",
+    ],
+    resource_dirs: [
+        "quickstep/res",
+    ],
+    static_libs: [
+        "SystemUI-statsd",
+        "SystemUISharedLib",
+        "Launcher3CommonDepsLib"
+    ],
+    manifest: "quickstep/AndroidManifest.xml",
+    platform_apis: true,
+    min_sdk_version: "current",
+    lint: {
+        baseline_filename: "lint-baseline-launcher3.xml",
+    },
+}
diff --git a/Android.mk b/Android.mk
index c222f24..c1dbc53 100644
--- a/Android.mk
+++ b/Android.mk
@@ -53,42 +53,6 @@
 include $(BUILD_PACKAGE)
 
 #
-# Build rule for Quickstep library.
-#
-include $(CLEAR_VARS)
-LOCAL_USE_AAPT2 := true
-LOCAL_AAPT2_ONLY := true
-LOCAL_MODULE_TAGS := optional
-
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    SystemUI-statsd \
-    SystemUISharedLib
-ifneq (,$(wildcard frameworks/base))
-  LOCAL_PRIVATE_PLATFORM_APIS := true
-else
-  LOCAL_SDK_VERSION := system_current
-  LOCAL_MIN_SDK_VERSION := 26
-endif
-LOCAL_MODULE := Launcher3QuickStepLib
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/NOTICE
-LOCAL_PRIVILEGED_MODULE := true
-LOCAL_STATIC_ANDROID_LIBRARIES := Launcher3CommonDepsLib
-
-LOCAL_SRC_FILES := \
-    $(call all-java-files-under, src) \
-    $(call all-java-files-under, quickstep/src) \
-    $(call all-java-files-under, src_shortcuts_overrides)
-
-LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/quickstep/res
-LOCAL_PROGUARD_ENABLED := disabled
-
-
-LOCAL_MANIFEST_FILE := quickstep/AndroidManifest.xml
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-#
 # Build rule for Quickstep app.
 #
 include $(CLEAR_VARS)
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index f793131..22c3131 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -31,6 +31,7 @@
         android:fullBackupOnly="true"
         android:fullBackupContent="@xml/backupscheme"
         android:hardwareAccelerated="true"
+        android:debuggable="true"
         android:icon="@drawable/ic_launcher_home"
         android:label="@string/derived_app_name"
         android:theme="@style/AppTheme"
diff --git a/buglist_with_title.txt b/buglist_with_title.txt
deleted file mode 100644
index aa8b413..0000000
--- a/buglist_with_title.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-144170434  twickham  P1        FIXED   Improve Overview ->  Home transition ----
-149934536  twickham  P2        FIXED   Update gesture nav pullback logic ----
-154951045  peanutbutter  P1        FIXED   Odd animation occuring at times when swiping to home ----
-154964045  awickham  P2        FIXED   "Clear all" text is not in the middle of app's window vertically ----
-158701272  twickham  P4        FIXED   Discontinuities when long-swiping to home ----
-160361464  tracyzhou  P2        FIXED   Place launcher above the target app in live tile mode ----
-160568387  twickham  P2        FIXED   Can't get to app switcher by swiping up (motion pause not detected) ----
-160718310  xuqiu     P1        FIXED   With "Select" overview action selected, App icon is missing in other overview apps after orientation change ----
-160748731  sunnygoyal  P2        ASSIGNED  Unify prediction model with Launcher model ----
-160759508  twickham  P2        FIXED   Swipe up cannot back to home screen in overview. ----
-161273376  xuqiu     P2        FIXED   [Overview Actions] Add logging and helpful messages ----
-161536946  twickham  P2        FIXED   Haptics don't indicate snap-to in overview,  ----
-161685099  winsonc   P2        FIXED   Screen still stay at the quick settings/notification when I swipe up with 3 finger to check the all apps. ----
-161801331  hyunyoungs  P2        FIXED   Change AllAppsSearch plugin to support only data fetch ----
-161901771  xuqiu     P1        FIXED   Overlapping layer of highlights with app layout getting darker when keep rotating the device from "Feedback" viewpoint in split screen ----
-161939759  sunnygoyal  P2        FIXED   RD1A: Going to overview in landscape mode clips the screen content ----
-162012217  perumaal  P2        ASSIGNED  Leaked Activity Caused by Gleams ----
-162454040  bookatz   P2        ASSIGNED  Create multiuser test that checks that opening an app works properly ----
-162480567  sfufa     P4        FIXED   Enable Item Decorations for search items ----
-162564471  tracyzhou  P2        FIXED   [Live tile] Handle tapping overview actions in live tile mode ----
-162623012  zakcohen  P1        ASSIGNED  Enable chips flag ----
-162812884  winsonc   P2        ASSIGNED  [R]The color have not changed in some page after turning on the dark theme. ----
-162861289  hyunyoungs  P2        FIXED   Add FocusIndicator support to DEVICE_SEARCH feature in S ----
-162871508  sfufa     P2        ASSIGNED  Introduce support for Hero app section ----
diff --git a/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java b/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java
index 72b8d3f..dacd8a2 100644
--- a/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java
+++ b/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java
@@ -80,7 +80,7 @@
     }
 
     @Override
-    public Bundle call(String method) {
+    public Bundle call(String method, String arg) {
         final Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_APP_LIST_FREEZE_FLAGS: {
@@ -161,7 +161,7 @@
             }
 
             default:
-                return super.call(method);
+                return super.call(method, arg);
         }
     }
 }
diff --git a/go/quickstep/res/layout/overview_actions_container.xml b/go/quickstep/res/layout/overview_actions_container.xml
index 0e718ca..cc65cbf 100644
--- a/go/quickstep/res/layout/overview_actions_container.xml
+++ b/go/quickstep/res/layout/overview_actions_container.xml
@@ -14,12 +14,11 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<!-- NOTE! don't add dimensions for margins / gravity to root view in this file, they need to be
-     loaded at runtime. -->
 <com.android.quickstep.views.GoOverviewActionsView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:layout_gravity="center_horizontal|bottom">
 
     <LinearLayout
         android:id="@+id/action_buttons"
diff --git a/lint-baseline-launcher3.xml b/lint-baseline-launcher3.xml
index 9a68405..94345a6 100644
--- a/lint-baseline-launcher3.xml
+++ b/lint-baseline-launcher3.xml
@@ -576,12 +576,12 @@
     <issue
         id="NewApi"
         message="Call requires API level 31 (current min is 26): `android.appwidget.AppWidgetHostView#setColorResources`"
-        errorLine1="            view.setColorResources(mWallpaperColorResources);"
-        errorLine2="                 ~~~~~~~~~~~~~~~~~">
+        errorLine1="                setColorResources(mWallpaperColorResources);"
+        errorLine2="                ~~~~~~~~~~~~~~~~~">
         <location
             file="packages/apps/Launcher3/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java"
-            line="381"
-            column="18"/>
+            line="528"
+            column="17"/>
     </issue>
 
     <issue
@@ -591,7 +591,7 @@
         errorLine2="                                                            ~~~~~~~~~~~~~~~~~~">
         <location
             file="packages/apps/Launcher3/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java"
-            line="270"
+            line="288"
             column="61"/>
     </issue>
 
diff --git a/quickstep/Android.bp b/quickstep/Android.bp
index 38c9919..7b3e6c4 100644
--- a/quickstep/Android.bp
+++ b/quickstep/Android.bp
@@ -26,3 +26,19 @@
     path: "robolectric_tests",
     srcs: ["robolectric_tests/src/**/*.java"],
 }
+
+filegroup {
+    name: "launcher3-quickstep-tests-src",
+    path: "tests",
+    srcs: ["tests/src/**/*.java"],
+}
+
+filegroup {
+    name: "launcher3-quickstep-oop-tests-src",
+    path: "tests",
+    srcs: [
+        "tests/src/com/android/quickstep/NavigationModeSwitchRule.java",
+        "tests/src/com/android/quickstep/AbstractQuickStepTest.java",
+        "tests/src/com/android/quickstep/TaplTestsQuickstep.java",
+    ]
+}
diff --git a/quickstep/res/drawable/button_taskbar_edu_bordered.xml b/quickstep/res/drawable/button_taskbar_edu_bordered.xml
new file mode 100644
index 0000000..47f8e8f
--- /dev/null
+++ b/quickstep/res/drawable/button_taskbar_edu_bordered.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<inset
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android">
+    <ripple
+        android:color="?android:attr/colorControlHighlight">
+        <item>
+            <shape android:shape="rectangle">
+                <corners android:radius="16dp"  />
+                <solid android:color="?androidprv:attr/colorSurface"/>
+                <stroke
+                    android:width="1dp"
+                    android:color="?androidprv:attr/colorAccentPrimaryVariant"/>
+            </shape>
+        </item>
+    </ripple>
+</inset>
\ No newline at end of file
diff --git a/quickstep/res/drawable/button_taskbar_edu_colored.xml b/quickstep/res/drawable/button_taskbar_edu_colored.xml
new file mode 100644
index 0000000..70bfc9f
--- /dev/null
+++ b/quickstep/res/drawable/button_taskbar_edu_colored.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<inset
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android">
+    <ripple
+        android:color="?android:attr/colorControlHighlight">
+        <item>
+            <shape android:shape="rectangle">
+                <corners android:radius="16dp"/>
+                <solid android:color="?androidprv:attr/colorAccentPrimary"/>
+            </shape>
+        </item>
+    </ripple>
+</inset>
\ No newline at end of file
diff --git a/quickstep/res/drawable/ic_sysbar_accessibility_button.xml b/quickstep/res/drawable/ic_sysbar_accessibility_button.xml
new file mode 100644
index 0000000..e0d5406
--- /dev/null
+++ b/quickstep/res/drawable/ic_sysbar_accessibility_button.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="21dp"
+    android:height="21dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M20.5,6c-2.61,0.7 -5.67,1 -8.5,1S6.11,6.7 3.5,6L3,8c1.86,0.5 4,0.83 6,1v13h2v-6h2v6h2V9c2,-0.17 4.14,-0.5 6,-1L20.5,6zM12,6c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2s-2,0.9 -2,2S10.9,6 12,6z"
+        android:fillColor="@android:color/white"
+        />
+</vector>
\ No newline at end of file
diff --git a/quickstep/res/drawable/ic_sysbar_rotate_button_ccw_start_0.xml b/quickstep/res/drawable/ic_sysbar_rotate_button_ccw_start_0.xml
new file mode 100644
index 0000000..ff5cb9e
--- /dev/null
+++ b/quickstep/res/drawable/ic_sysbar_rotate_button_ccw_start_0.xml
@@ -0,0 +1,187 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<animated-vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt">
+    <aapt:attr name="android:drawable">
+        <vector android:name="root"
+                android:width="28dp"
+                android:height="28dp"
+                android:viewportWidth="28.0"
+                android:viewportHeight="28.0">
+            <!-- Use scaleX to flip icon so arrows always point in the direction of motion -->
+            <group android:name="icon" android:pivotX="14" android:pivotY="14"
+                   android:scaleX="1">
+                <!-- Tint color to be set directly -->
+                <path android:fillColor="#FFFFFFFF"
+                      android:pathData="M12.02,10.83L9.25,8.06l2.77,-2.77l1.12,1.12l-0.85,0.86h5.16c0.72,0 1.31,0.56 1.31,1.26v9.16l-1.58,-1.58V8.85h-4.89l0.86,0.86L12.02,10.83zM15.98,17.17l-1.12,1.12l0.85,0.86h-4.88v-7.26L9.25,10.3v9.17c0,0.7 0.59,1.26 1.31,1.26h5.16v0.01l-0.85,0.85l1.12,1.12l2.77,-2.77L15.98,17.17z"/>
+            </group>
+        </vector>
+    </aapt:attr>
+
+    <!-- Repeat all animations 5 times but don't fade out at the end -->
+    <target android:name="root">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+            </set>
+        </aapt:attr>
+    </target>
+    <target android:name="icon">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="100"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="-90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="-90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="-90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="-90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="-90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+            </set>
+        </aapt:attr>
+    </target>
+</animated-vector>
\ No newline at end of file
diff --git a/quickstep/res/drawable/ic_sysbar_rotate_button_ccw_start_90.xml b/quickstep/res/drawable/ic_sysbar_rotate_button_ccw_start_90.xml
new file mode 100644
index 0000000..90fedb1
--- /dev/null
+++ b/quickstep/res/drawable/ic_sysbar_rotate_button_ccw_start_90.xml
@@ -0,0 +1,187 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<animated-vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt">
+    <aapt:attr name="android:drawable">
+        <vector android:name="root"
+                android:width="28dp"
+                android:height="28dp"
+                android:viewportWidth="28.0"
+                android:viewportHeight="28.0">
+            <!-- Use scaleX to flip icon so arrows always point in the direction of motion -->
+            <group android:name="icon" android:pivotX="14" android:pivotY="14"
+                   android:scaleX="1">
+                <!-- Tint color to be set directly -->
+                <path android:fillColor="#FFFFFFFF"
+                      android:pathData="M12.02,10.83L9.25,8.06l2.77,-2.77l1.12,1.12l-0.85,0.86h5.16c0.72,0 1.31,0.56 1.31,1.26v9.16l-1.58,-1.58V8.85h-4.89l0.86,0.86L12.02,10.83zM15.98,17.17l-1.12,1.12l0.85,0.86h-4.88v-7.26L9.25,10.3v9.17c0,0.7 0.59,1.26 1.31,1.26h5.16v0.01l-0.85,0.85l1.12,1.12l2.77,-2.77L15.98,17.17z"/>
+            </group>
+        </vector>
+    </aapt:attr>
+
+    <!-- Repeat all animations 5 times but don't fade out at the end -->
+    <target android:name="root">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+            </set>
+        </aapt:attr>
+    </target>
+    <target android:name="icon">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="100"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="0">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="0">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="0">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="0">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="0">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+            </set>
+        </aapt:attr>
+    </target>
+</animated-vector>
\ No newline at end of file
diff --git a/quickstep/res/drawable/ic_sysbar_rotate_button_cw_start_0.xml b/quickstep/res/drawable/ic_sysbar_rotate_button_cw_start_0.xml
new file mode 100644
index 0000000..a89e7a3
--- /dev/null
+++ b/quickstep/res/drawable/ic_sysbar_rotate_button_cw_start_0.xml
@@ -0,0 +1,187 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<animated-vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt">
+    <aapt:attr name="android:drawable">
+        <vector android:name="root"
+                android:width="28dp"
+                android:height="28dp"
+                android:viewportWidth="28.0"
+                android:viewportHeight="28.0">
+            <!-- Use scaleX to flip icon so arrows always point in the direction of motion -->
+            <group android:name="icon" android:pivotX="14" android:pivotY="14"
+                   android:scaleX="-1">
+                <!-- Tint color to be set directly -->
+                <path android:fillColor="#FFFFFFFF"
+                      android:pathData="M12.02,10.83L9.25,8.06l2.77,-2.77l1.12,1.12l-0.85,0.86h5.16c0.72,0 1.31,0.56 1.31,1.26v9.16l-1.58,-1.58V8.85h-4.89l0.86,0.86L12.02,10.83zM15.98,17.17l-1.12,1.12l0.85,0.86h-4.88v-7.26L9.25,10.3v9.17c0,0.7 0.59,1.26 1.31,1.26h5.16v0.01l-0.85,0.85l1.12,1.12l2.77,-2.77L15.98,17.17z"/>
+            </group>
+        </vector>
+    </aapt:attr>
+
+    <!-- Repeat all animations 5 times but don't fade out at the end -->
+    <target android:name="root">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+            </set>
+        </aapt:attr>
+    </target>
+    <target android:name="icon">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="100"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="0"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="0"
+                                android:valueTo="90">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+            </set>
+        </aapt:attr>
+    </target>
+</animated-vector>
\ No newline at end of file
diff --git a/quickstep/res/drawable/ic_sysbar_rotate_button_cw_start_90.xml b/quickstep/res/drawable/ic_sysbar_rotate_button_cw_start_90.xml
new file mode 100644
index 0000000..0dc67b0
--- /dev/null
+++ b/quickstep/res/drawable/ic_sysbar_rotate_button_cw_start_90.xml
@@ -0,0 +1,187 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<animated-vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt">
+    <aapt:attr name="android:drawable">
+        <vector android:name="root"
+                android:width="28dp"
+                android:height="28dp"
+                android:viewportWidth="28.0"
+                android:viewportHeight="28.0">
+            <!-- Use scaleX to flip icon so arrows always point in the direction of motion -->
+            <group android:name="icon" android:pivotX="14" android:pivotY="14"
+                   android:scaleX="-1">
+                <!-- Tint color to be set directly -->
+                <path android:fillColor="#FFFFFFFF"
+                      android:pathData="M12.02,10.83L9.25,8.06l2.77,-2.77l1.12,1.12l-0.85,0.86h5.16c0.72,0 1.31,0.56 1.31,1.26v9.16l-1.58,-1.58V8.85h-4.89l0.86,0.86L12.02,10.83zM15.98,17.17l-1.12,1.12l0.85,0.86h-4.88v-7.26L9.25,10.3v9.17c0,0.7 0.59,1.26 1.31,1.26h5.16v0.01l-0.85,0.85l1.12,1.12l2.77,-2.77L15.98,17.17z"/>
+            </group>
+        </vector>
+    </aapt:attr>
+
+    <!-- Repeat all animations 5 times but don't fade out at the end -->
+    <target android:name="root">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+                <!-- Linear fade out -->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="1700"
+                                android:valueFrom="1"
+                                android:valueTo="0"
+                                android:interpolator="@android:anim/linear_interpolator"/>
+                <!-- Linear fade in-->
+                <objectAnimator android:propertyName="alpha"
+                                android:duration="100"
+                                android:startOffset="100"
+                                android:valueFrom="0"
+                                android:valueTo="1"
+                                android:interpolator="@android:anim/linear_interpolator" />
+            </set>
+        </aapt:attr>
+    </target>
+    <target android:name="icon">
+        <aapt:attr name="android:animation">
+            <set android:ordering="sequentially">
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="100"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="180">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="180">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="180">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="180">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+
+                <!-- Reset rotation position for fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:startOffset="1300"
+                                android:duration="100"
+                                android:valueFrom="90"
+                                android:valueTo="90"/>
+
+                <!-- Icon rotation with start timing offset after fade in -->
+                <objectAnimator android:propertyName="rotation"
+                                android:duration="600"
+                                android:valueFrom="90"
+                                android:valueTo="180">
+                    <aapt:attr name="android:interpolator">
+                        <pathInterpolator android:pathData="M 0.0,0.0 c0.408,1.181 0.674,1.08 1.0,1.0"/>
+                    </aapt:attr>
+                </objectAnimator>
+            </set>
+        </aapt:attr>
+    </target>
+</animated-vector>
\ No newline at end of file
diff --git a/quickstep/res/drawable/taskbar_edu_splitscreen.webp b/quickstep/res/drawable/taskbar_edu_splitscreen.webp
new file mode 100644
index 0000000..2f4402f
--- /dev/null
+++ b/quickstep/res/drawable/taskbar_edu_splitscreen.webp
Binary files differ
diff --git a/quickstep/res/layout/overview_actions_container.xml b/quickstep/res/layout/overview_actions_container.xml
index 68680d3..0c2a28c 100644
--- a/quickstep/res/layout/overview_actions_container.xml
+++ b/quickstep/res/layout/overview_actions_container.xml
@@ -14,11 +14,10 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<!-- NOTE! don't add dimensions for margins / gravity to root view in this file, they need to be
-     loaded at runtime. -->
 <com.android.quickstep.views.OverviewActionsView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:layout_gravity="center_horizontal|bottom">
 
     <LinearLayout
         android:id="@+id/action_buttons"
diff --git a/quickstep/res/layout/task_grouped.xml b/quickstep/res/layout/task_grouped.xml
new file mode 100644
index 0000000..069ff86
--- /dev/null
+++ b/quickstep/res/layout/task_grouped.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+     Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- NOTE! don't add dimensions for margins / paddings / sizes that change per orientation to this
+     file, they need to be loaded at runtime. -->
+
+<!-- DOUBLE NOTE! Don't deviate IDs from task.xml since this layout acts as a "subclass" (read as
+     "bad code"). How can we use the view pool in RecentsView to use task.xml layout with using
+     GroupedTaskView.java class? Is that possible (while still keeping code in separate class) ? -->
+
+<com.android.quickstep.views.GroupedTaskView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:clipChildren="false"
+    android:defaultFocusHighlightEnabled="false"
+    android:focusable="true">
+
+    <com.android.quickstep.views.TaskThumbnailView
+        android:id="@+id/snapshot"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <com.android.quickstep.views.TaskThumbnailView
+        android:id="@+id/bottomright_snapshot"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <com.android.quickstep.views.IconView
+        android:id="@+id/icon"
+        android:layout_width="@dimen/task_thumbnail_icon_size"
+        android:layout_height="@dimen/task_thumbnail_icon_size"
+        android:focusable="false"
+        android:importantForAccessibility="no"/>
+</com.android.quickstep.views.GroupedTaskView>
\ No newline at end of file
diff --git a/quickstep/res/layout/taskbar.xml b/quickstep/res/layout/taskbar.xml
index e680233..b4c168c 100644
--- a/quickstep/res/layout/taskbar.xml
+++ b/quickstep/res/layout/taskbar.xml
@@ -13,12 +13,13 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-
 <com.android.launcher3.taskbar.TaskbarDragLayer
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/taskbar_container"
     android:layout_width="wrap_content"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    android:clipChildren="false">
 
     <com.android.launcher3.taskbar.TaskbarView
         android:id="@+id/taskbar_view"
@@ -26,30 +27,51 @@
         android:layout_height="wrap_content"
         android:gravity="center"
         android:forceHasOverlappingRendering="false"
+        android:layout_gravity="bottom"
+        android:clipChildren="false" />
+
+    <FrameLayout
+        android:id="@+id/navbuttons_view"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
         android:layout_gravity="bottom" >
 
-        <LinearLayout
-            android:id="@+id/system_button_layout"
+        <FrameLayout
+            android:id="@+id/start_contextual_buttons"
             android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
             android:paddingLeft="@dimen/taskbar_nav_buttons_spacing"
             android:paddingRight="@dimen/taskbar_nav_buttons_spacing"
-            android:forceHasOverlappingRendering="false"
-            android:gravity="center" />
+            android:gravity="center_vertical"
+            android:layout_gravity="start"/>
 
         <LinearLayout
-            android:id="@+id/hotseat_icons_layout"
+            android:id="@+id/end_nav_buttons"
             android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:forceHasOverlappingRendering="false"
-            android:gravity="center" />
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            android:paddingLeft="@dimen/taskbar_nav_buttons_spacing"
+            android:paddingRight="@dimen/taskbar_nav_buttons_spacing"
+            android:gravity="center_vertical"
+            android:layout_gravity="end"/>
 
-    </com.android.launcher3.taskbar.TaskbarView>
+        <FrameLayout
+            android:id="@+id/end_contextual_buttons"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:paddingLeft="@dimen/taskbar_nav_buttons_spacing"
+            android:paddingRight="@dimen/taskbar_nav_buttons_spacing"
+            android:gravity="center_vertical"
+            android:layout_gravity="end"/>
+    </FrameLayout>
 
-    <com.android.launcher3.taskbar.ImeBarView
-        android:id="@+id/ime_bar_view"
-        android:layout_width="wrap_content"
+    <com.android.launcher3.taskbar.StashedHandleView
+        android:id="@+id/stashed_handle"
+        tools:comment1="The actual size and shape will be set as a ViewOutlineProvider at runtime"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:visibility="gone"/>
+        android:background="@color/taskbar_stashed_handle_dark_color"
+        android:clipToOutline="true"
+        android:layout_gravity="bottom"/>
 
 </com.android.launcher3.taskbar.TaskbarDragLayer>
\ No newline at end of file
diff --git a/quickstep/res/layout/taskbar_edu.xml b/quickstep/res/layout/taskbar_edu.xml
new file mode 100644
index 0000000..b7717b7
--- /dev/null
+++ b/quickstep/res/layout/taskbar_edu.xml
@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<com.android.launcher3.taskbar.TaskbarEduView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_gravity="bottom"
+    android:gravity="bottom"
+    android:orientation="vertical"
+    android:layout_marginHorizontal="108dp">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/edu_view"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@drawable/bg_rounded_corner_bottom_sheet"
+        android:gravity="center_horizontal"
+        android:paddingHorizontal="36dp"
+        android:paddingTop="64dp">
+
+        <TextView
+            android:id="@+id/edu_header"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginHorizontal="16dp"
+            app:layout_constraintTop_toTopOf="parent"
+            android:gravity="center_horizontal"
+            style="@style/TextHeadline"
+            android:text="@string/taskbar_edu_header_1"
+            android:fontFamily="google-sans"
+            android:textColor="?android:attr/textColorPrimary"
+            android:textSize="24sp"
+            android:maxLines="2"/>
+
+        <ImageView
+            android:id="@+id/edu_illustration"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            app:layout_constraintTop_toBottomOf="@id/edu_header"
+            android:src="@drawable/taskbar_edu_splitscreen"/>
+
+        <Button
+            android:id="@+id/edu_close_button"
+            android:layout_width="wrap_content"
+            android:layout_height="36dp"
+            android:layout_marginBottom="92dp"
+            app:layout_constraintTop_toBottomOf="@id/edu_illustration"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            android:text="@string/taskbar_edu_close"
+            style="@style/TaskbarEdu.Button.Close"
+            android:textColor="?android:attr/textColorPrimary"/>
+
+        <Button
+            android:id="@+id/edu_next_button"
+            android:layout_width="wrap_content"
+            android:layout_height="36dp"
+            android:layout_marginBottom="92dp"
+            app:layout_constraintTop_toBottomOf="@id/edu_illustration"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            android:text="@string/taskbar_edu_next"
+            style="@style/TaskbarEdu.Button.Next"
+            android:textColor="?androidprv:attr/textColorOnAccent"/>
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</com.android.launcher3.taskbar.TaskbarEduView>
\ No newline at end of file
diff --git a/quickstep/res/layout/taskbar_nav_button.xml b/quickstep/res/layout/taskbar_nav_button.xml
new file mode 100644
index 0000000..985f928
--- /dev/null
+++ b/quickstep/res/layout/taskbar_nav_button.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ImageView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="@dimen/taskbar_nav_buttons_size"
+    android:layout_height="@dimen/taskbar_nav_buttons_size"
+    android:background="@drawable/taskbar_icon_click_feedback_roundrect"
+    android:scaleType="center"/>
\ No newline at end of file
diff --git a/quickstep/res/values/colors.xml b/quickstep/res/values/colors.xml
index 167c7c3..17980f0 100644
--- a/quickstep/res/values/colors.xml
+++ b/quickstep/res/values/colors.xml
@@ -26,6 +26,9 @@
     <color name="all_apps_prediction_row_separator_dark">#3cffffff</color>
 
     <!-- Taskbar -->
-    <color name="taskbar_background">#101010</color>
+    <color name="taskbar_background">@color/overview_scrim_dark</color>
     <color name="taskbar_icon_selection_ripple">#E0E0E0</color>
+
+    <color name="taskbar_stashed_handle_light_color">#EBffffff</color>
+    <color name="taskbar_stashed_handle_dark_color">#99000000</color>
 </resources>
\ No newline at end of file
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 6cc64e0..f1f23c4 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -16,7 +16,8 @@
 
 <resources>
     <dimen name="task_thumbnail_icon_size">48dp</dimen>
-    <dimen name="task_thumbnail_icon_size_grid">32dp</dimen>
+    <dimen name="task_thumbnail_icon_drawable_size">48dp</dimen>
+    <dimen name="task_thumbnail_icon_drawable_size_grid">32dp</dimen>
     <!-- For screens without rounded corners -->
     <dimen name="task_corner_radius_small">2dp</dimen>
     <!-- For Launchers that want to override the default dialog corner radius -->
@@ -31,19 +32,23 @@
 
     <dimen name="overview_minimum_next_prev_size">50dp</dimen>
     <dimen name="overview_task_margin">16dp</dimen>
+    <dimen name="overview_task_margin_focused">12dp</dimen>
+    <dimen name="overview_task_margin_grid">4dp</dimen>
 
     <!-- Overrideable in overlay that provides the Overview Actions. -->
     <dimen name="overview_actions_height">48dp</dimen>
-    <dimen name="overview_actions_bottom_margin_gesture">28dp</dimen>
-    <dimen name="overview_actions_bottom_margin_three_button">8dp</dimen>
+    <dimen name="overview_actions_margin_gesture">28dp</dimen>
+    <dimen name="overview_actions_top_margin_gesture_grid_portrait">19.37dp</dimen>
+    <dimen name="overview_actions_bottom_margin_gesture_grid_portrait">22dp</dimen>
+    <dimen name="overview_actions_top_margin_gesture_grid_landscape">19.1dp</dimen>
+    <dimen name="overview_actions_bottom_margin_gesture_grid_landscape">10dp</dimen>
+    <dimen name="overview_actions_margin_three_button">8dp</dimen>
     <dimen name="overview_actions_horizontal_margin">16dp</dimen>
 
-    <dimen name="overview_grid_top_margin">77dp</dimen>
-    <dimen name="overview_grid_bottom_margin">90dp</dimen>
-    <dimen name="overview_grid_side_margin">54dp</dimen>
-    <dimen name="overview_grid_row_spacing">42dp</dimen>
-    <dimen name="overview_grid_focus_vertical_margin">90dp</dimen>
-    <dimen name="split_placeholder_size">110dp</dimen>
+    <dimen name="overview_grid_side_margin">50dp</dimen>
+    <dimen name="overview_grid_row_spacing_portrait">17.13dp</dimen>
+    <dimen name="overview_grid_row_spacing_landscape">13.38dp</dimen>
+    <dimen name="overview_grid_focus_vertical_margin">0dp</dimen>
 
     <!-- These speeds are in dp/s -->
     <dimen name="max_task_dismiss_drag_velocity">2.25dp</dimen>
@@ -52,6 +57,7 @@
     <dimen name="default_task_dismiss_drag_velocity_grid_focus_task">5dp</dimen>
 
     <dimen name="recents_page_spacing">16dp</dimen>
+    <dimen name="recents_page_spacing_grid">36dp</dimen>
     <dimen name="recents_clear_all_deadzone_vertical_margin">70dp</dimen>
 
     <!-- The speed in dp/s at which the user needs to be scrolling in recents such that we start
@@ -70,6 +76,8 @@
     <item name="content_scale" format="float" type="dimen">0.97</item>
     <dimen name="closing_window_trans_y">115dp</dimen>
 
+    <dimen name="quick_switch_scaling_scroll_threshold">100dp</dimen>
+
     <dimen name="recents_empty_message_text_size">16sp</dimen>
     <dimen name="recents_empty_message_text_padding">16dp</dimen>
 
@@ -150,11 +158,13 @@
 
     <!-- Taskbar -->
     <dimen name="taskbar_size">60dp</dimen>
-    <dimen name="taskbar_icon_size">44dp</dimen>
     <dimen name="taskbar_icon_touch_size">48dp</dimen>
     <dimen name="taskbar_icon_drag_icon_size">54dp</dimen>
-    <!-- Note that this applies to both sides of all icons, so visible space is double this. -->
-    <dimen name="taskbar_icon_spacing">8dp</dimen>
     <dimen name="taskbar_folder_margin">16dp</dimen>
     <dimen name="taskbar_nav_buttons_spacing">16dp</dimen>
+    <dimen name="taskbar_nav_buttons_size">48dp</dimen>
+    <dimen name="taskbar_stashed_size">24dp</dimen>
+    <dimen name="taskbar_stashed_handle_width">220dp</dimen>
+    <dimen name="taskbar_stashed_handle_height">6dp</dimen>
+    <dimen name="taskbar_edu_bg_corner_radius">28dp</dimen>
 </resources>
diff --git a/quickstep/res/values/strings.xml b/quickstep/res/values/strings.xml
index 4aee2a9..da19c95 100644
--- a/quickstep/res/values/strings.xml
+++ b/quickstep/res/values/strings.xml
@@ -203,4 +203,13 @@
     <string name="gesture_tutorial_action_button_label_cancel">Cancel</string>
     <!-- Button text shown on a button on the tutorial skip dialog to exit the tutorial. [CHAR LIMIT=14] -->
     <string name="gesture_tutorial_action_button_label_skip">Skip</string>
+
+    <!-- ******* Taskbar Edu ******* -->
+    <!-- Text in dialog that lets a user know how they can use the taskbar on their device.
+         [CHAR_LIMIT=NONE] -->
+    <string name="taskbar_edu_header_1">Use 2 apps at once and switch apps with the taskbar</string>
+    <!-- Text on button to go to the next screen of a tutorial [CHAR_LIMIT=30] -->
+    <string name="taskbar_edu_next">Next</string>
+    <!-- Text on button to exit a tutorial [CHAR_LIMIT=30] -->
+    <string name="taskbar_edu_close">Close</string>
 </resources>
diff --git a/quickstep/res/values/styles.xml b/quickstep/res/values/styles.xml
index 07c448d..c23a3a0 100644
--- a/quickstep/res/values/styles.xml
+++ b/quickstep/res/values/styles.xml
@@ -139,4 +139,16 @@
     <style name="BaseIcon.Workspace.Taskbar" >
         <item name="iconDisplay">taskbar</item>
     </style>
+
+    <style name="TaskbarEdu.Button.Close" parent="@android:style/Widget.Material.Button">
+        <item name="android:background">@drawable/button_taskbar_edu_bordered</item>
+        <item name="android:stateListAnimator">@null</item>
+        <item name="android:textSize">16sp</item>
+    </style>
+
+    <style name="TaskbarEdu.Button.Next" parent="@android:style/Widget.Material.Button">
+        <item name="android:background">@drawable/button_taskbar_edu_colored</item>
+        <item name="android:stateListAnimator">@null</item>
+        <item name="android:textSize">16sp</item>
+    </style>
 </resources>
\ No newline at end of file
diff --git a/quickstep/robolectric_tests/src/com/android/launcher3/model/WidgetsPredicationUpdateTaskTest.java b/quickstep/robolectric_tests/src/com/android/launcher3/model/WidgetsPredicationUpdateTaskTest.java
index 7c97b93..f82fbcc 100644
--- a/quickstep/robolectric_tests/src/com/android/launcher3/model/WidgetsPredicationUpdateTaskTest.java
+++ b/quickstep/robolectric_tests/src/com/android/launcher3/model/WidgetsPredicationUpdateTaskTest.java
@@ -34,26 +34,16 @@
 import android.os.Process;
 import android.os.UserHandle;
 
-import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.ComponentWithLabel;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.model.BgDataModel.FixedContainerItems;
 import com.android.launcher3.model.QuickstepModelDelegate.PredictorState;
-import com.android.launcher3.model.data.AppInfo;
-import com.android.launcher3.model.data.ItemInfo;
-import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.shadows.ShadowDeviceFlag;
-import com.android.launcher3.util.ComponentKey;
-import com.android.launcher3.util.IntArray;
-import com.android.launcher3.util.ItemInfoMatcher;
 import com.android.launcher3.util.LauncherModelHelper;
-import com.android.launcher3.util.ViewOnDrawExecutor;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.PendingAddWidgetInfo;
-import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -67,9 +57,6 @@
 import org.robolectric.shadows.ShadowPackageManager;
 import org.robolectric.util.ReflectionHelpers;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -87,7 +74,6 @@
     private Context mContext;
     private LauncherModelHelper mModelHelper;
     private UserHandle mUserHandle;
-    private InvariantDeviceProfile mTestProfile;
 
     @Mock
     private IconCache mIconCache;
@@ -103,7 +89,6 @@
         mContext = RuntimeEnvironment.application;
         mModelHelper = new LauncherModelHelper();
         mUserHandle = Process.myUserHandle();
-        mTestProfile = new InvariantDeviceProfile();
         // 2 widgets, app4/provider1 & app5/provider1, have already been added to the workspace.
         mModelHelper.initializeData("/widgets_predication_update_task_data.txt");
 
@@ -237,65 +222,5 @@
         public void bindExtraContainerItems(FixedContainerItems item) {
             mRecommendedWidgets = item;
         }
-
-        @Override
-        public int getPageToBindSynchronously() {
-            return 0;
-        }
-
-        @Override
-        public void clearPendingBinds() { }
-
-        @Override
-        public void startBinding() { }
-
-        @Override
-        public void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons) { }
-
-        @Override
-        public void bindScreens(IntArray orderedScreenIds) { }
-
-        @Override
-        public void finishFirstPageBind(ViewOnDrawExecutor executor) { }
-
-        @Override
-        public void finishBindingItems(int pageBoundFirst) { }
-
-        @Override
-        public void preAddApps() { }
-
-        @Override
-        public void bindAppsAdded(IntArray newScreens, ArrayList<ItemInfo> addNotAnimated,
-                ArrayList<ItemInfo> addAnimated) { }
-
-        @Override
-        public void bindIncrementalDownloadProgressUpdated(AppInfo app) { }
-
-        @Override
-        public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) { }
-
-        @Override
-        public void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets) { }
-
-        @Override
-        public void bindRestoreItemsChange(HashSet<ItemInfo> updates) { }
-
-        @Override
-        public void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher) { }
-
-        @Override
-        public void bindAllWidgets(List<WidgetsListBaseEntry> widgets) { }
-
-        @Override
-        public void onPageBoundSynchronously(int page) { }
-
-        @Override
-        public void executeOnNextDraw(ViewOnDrawExecutor executor) { }
-
-        @Override
-        public void bindDeepShortcutMap(HashMap<ComponentKey, Integer> deepShortcutMap) { }
-
-        @Override
-        public void bindAllApplications(AppInfo[] apps, int flags) { }
     }
 }
diff --git a/quickstep/robolectric_tests/src/com/android/quickstep/RecentsActivityTest.java b/quickstep/robolectric_tests/src/com/android/quickstep/RecentsActivityTest.java
index 9df9ab1..82e8903 100644
--- a/quickstep/robolectric_tests/src/com/android/quickstep/RecentsActivityTest.java
+++ b/quickstep/robolectric_tests/src/com/android/quickstep/RecentsActivityTest.java
@@ -63,7 +63,7 @@
 
         RunningTaskInfo placeholderTask = new RunningTaskInfo();
         placeholderTask.taskId = 22;
-        frv.showCurrentTask(placeholderTask);
+        frv.showCurrentTask(new RunningTaskInfo[]{placeholderTask});
         doLayout(activity);
 
         ThumbnailData thumbnailData = new ThumbnailData();
diff --git a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
index de0416b..b4b29aa 100644
--- a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
@@ -22,6 +22,7 @@
 import static com.android.launcher3.LauncherState.NO_OFFSET;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
 import static com.android.launcher3.model.data.ItemInfo.NO_MATCHING_ID;
+import static com.android.launcher3.util.DisplayController.CHANGE_ACTIVE_SCREEN;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 import static com.android.quickstep.SysUINavigationMode.Mode.TWO_BUTTONS;
 import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_HOME_KEY;
@@ -30,12 +31,15 @@
 import android.animation.ValueAnimator;
 import android.app.ActivityOptions;
 import android.content.ComponentName;
+import android.content.Context;
 import android.content.Intent;
 import android.content.IntentSender;
 import android.content.ServiceConnection;
 import android.os.Bundle;
 import android.os.CancellationSignal;
+import android.os.Handler;
 import android.os.IBinder;
+import android.util.Log;
 import android.view.View;
 import android.window.SplashScreen;
 
@@ -56,6 +60,8 @@
 import com.android.launcher3.taskbar.TaskbarStateHandler;
 import com.android.launcher3.uioverrides.RecentsViewStateController;
 import com.android.launcher3.util.ActivityOptionsWrapper;
+import com.android.launcher3.util.DisplayController;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.ObjectWrapper;
 import com.android.launcher3.util.UiThreadHelper;
 import com.android.quickstep.OverviewCommandHelper;
@@ -86,6 +92,11 @@
 public abstract class BaseQuickstepLauncher extends Launcher
         implements NavigationModeChangeListener {
 
+    private static final long BACKOFF_MILLIS = 1000;
+
+    // Max backoff caps at 5 mins
+    private static final long MAX_BACKOFF_MILLIS = 10 * 60 * 1000;
+
     private DepthController mDepthController = new DepthController(this);
     private QuickstepTransitionManager mAppTransitionManager;
 
@@ -106,14 +117,26 @@
         public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
             mTaskbarManager = ((TISBinder) iBinder).getTaskbarManager();
             mTaskbarManager.setLauncher(BaseQuickstepLauncher.this);
+            Log.d(TAG, "TIS service connected");
+            resetServiceBindRetryState();
 
             mOverviewCommandHelper = ((TISBinder) iBinder).getOverviewCommandHelper();
         }
 
         @Override
         public void onServiceDisconnected(ComponentName componentName) { }
+
+        @Override
+        public void onBindingDied(ComponentName name) {
+            Log.w(TAG, "TIS binding died");
+            internalBindToTIS();
+        }
     };
+
+    private final Runnable mConnectionRunnable = this::internalBindToTIS;
+    private short mConnectionAttempts;
     private final TaskbarStateHandler mTaskbarStateHandler = new TaskbarStateHandler(this);
+    private final Handler mHandler = new Handler();
 
     // Will be updated when dragging from taskbar.
     private @Nullable DragOptions mNextWorkspaceDragOptions = null;
@@ -132,11 +155,11 @@
 
         SysUINavigationMode.INSTANCE.get(this).removeModeChangeListener(this);
 
-
         unbindService(mTisBinderConnection);
         if (mTaskbarManager != null) {
-            mTaskbarManager.setLauncher(null);
+            mTaskbarManager.clearLauncher(this);
         }
+        resetServiceBindRetryState();
         super.onDestroy();
     }
 
@@ -272,20 +295,43 @@
 
         SysUINavigationMode.INSTANCE.get(this).updateMode();
         mActionsView = findViewById(R.id.overview_actions_view);
-        mSplitPlaceholderView = findViewById(R.id.split_placeholder);
         RecentsView overviewPanel = (RecentsView) getOverviewPanel();
-        mSplitPlaceholderView.init(
-                new SplitSelectStateController(mHandler, SystemUiProxy.INSTANCE.get(this))
-        );
-        overviewPanel.init(mActionsView, mSplitPlaceholderView);
+        SplitSelectStateController controller =
+                new SplitSelectStateController(mHandler, SystemUiProxy.INSTANCE.get(this));
+        overviewPanel.init(mActionsView, controller);
         mActionsView.setDp(getDeviceProfile());
         mActionsView.updateVerticalMargin(SysUINavigationMode.getMode(this));
 
         mAppTransitionManager = new QuickstepTransitionManager(this);
         mAppTransitionManager.registerRemoteAnimations();
 
-        bindService(new Intent(this, TouchInteractionService.class), mTisBinderConnection, 0);
+        internalBindToTIS();
+    }
 
+    /**
+     * Binds {@link #mTisBinderConnection} to {@link TouchInteractionService}. If the binding fails,
+     * attempts to retry via {@link #mConnectionRunnable}
+     */
+    private void internalBindToTIS() {
+        boolean bound = bindService(new Intent(this, TouchInteractionService.class),
+                        mTisBinderConnection, 0);
+        if (bound) {
+            resetServiceBindRetryState();
+            return;
+        }
+
+        Log.w(TAG, "Retrying TIS Binder connection attempt: " + mConnectionAttempts);
+        final long timeoutMs = (long) Math.min(
+                Math.scalb(BACKOFF_MILLIS, mConnectionAttempts), MAX_BACKOFF_MILLIS);
+        mHandler.postDelayed(mConnectionRunnable, timeoutMs);
+        mConnectionAttempts++;
+    }
+
+    private void resetServiceBindRetryState() {
+        if (mHandler.hasCallbacks(mConnectionRunnable)) {
+            mHandler.removeCallbacks(mConnectionRunnable);
+        }
+        mConnectionAttempts = 0;
     }
 
     public void setTaskbarUIController(LauncherTaskbarUIController taskbarUIController) {
@@ -375,14 +421,6 @@
     }
 
     @Override
-    public float getNormalTaskbarScale() {
-        if (mTaskbarUIController != null) {
-            return mTaskbarUIController.getTaskbarScaleOnHome();
-        }
-        return super.getNormalTaskbarScale();
-    }
-
-    @Override
     public void onDragLayerHierarchyChanged() {
         onLauncherStateOrFocusChanged();
     }
@@ -436,8 +474,8 @@
     }
 
     @Override
-    public void finishBindingItems(int pageBoundFirst) {
-        super.finishBindingItems(pageBoundFirst);
+    public void finishBindingItems(IntSet pagesBoundFirst) {
+        super.finishBindingItems(pagesBoundFirst);
         // Instantiate and initialize WellbeingModel now that its loading won't interfere with
         // populating workspace.
         // TODO: Find a better place for this
@@ -505,4 +543,15 @@
     public void setHintUserWillBeActive() {
         addActivityFlags(ACTIVITY_STATE_USER_WILL_BE_ACTIVE);
     }
+
+    @Override
+    public void onDisplayInfoChanged(Context context, DisplayController.Info info, int flags) {
+        super.onDisplayInfoChanged(context, info, flags);
+        // When changing screens with live tile active, finish the recents animation to close
+        // overview as it should be an interim state
+        if ((flags & CHANGE_ACTIVE_SCREEN) != 0 && ENABLE_QUICKSTEP_LIVE_TILE.get()) {
+            RecentsView recentsView = getOverviewPanel();
+            recentsView.finishRecentsAnimation(/* toRecents= */ true, null);
+        }
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
index 5bb76d6..433ae3c 100644
--- a/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
+++ b/quickstep/src/com/android/launcher3/QuickstepTransitionManager.java
@@ -40,7 +40,6 @@
 import static com.android.launcher3.dragndrop.DragLayer.ALPHA_INDEX_TRANSITIONS;
 import static com.android.launcher3.statehandlers.DepthController.DEPTH;
 import static com.android.launcher3.util.DisplayController.getSingleFrameMs;
-import static com.android.quickstep.TaskUtils.taskIsATargetWithMode;
 import static com.android.quickstep.TaskViewUtils.findTaskViewToLaunch;
 import static com.android.systemui.shared.system.QuickStepContract.getWindowCornerRadius;
 import static com.android.systemui.shared.system.QuickStepContract.supportsRoundedCornersOnWindows;
@@ -86,6 +85,7 @@
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.shortcuts.DeepShortcutView;
 import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.taskbar.LauncherTaskbarUIController;
 import com.android.launcher3.util.ActivityOptionsWrapper;
 import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
 import com.android.launcher3.util.RunnableList;
@@ -428,6 +428,10 @@
                         4 - rotationChange);
             }
         }
+        // TODO(b/196637509): don't do this for immersive apps.
+        if (mDeviceProfile.isTaskbarPresentInApps) {
+            bounds.bottom -= mDeviceProfile.taskbarSize;
+        }
         return bounds;
     }
 
@@ -512,7 +516,10 @@
 
             final boolean scrimEnabled = ENABLE_SCRIM_FOR_APP_LAUNCH.get();
             if (scrimEnabled) {
-                int scrimColor = Themes.getAttrColor(mLauncher, R.attr.overviewScrimColor);
+                boolean useTaskbarColor = mDeviceProfile.isTaskbarPresentInApps;
+                int scrimColor = useTaskbarColor
+                        ? mLauncher.getResources().getColor(R.color.taskbar_background)
+                        : Themes.getAttrColor(mLauncher, R.attr.overviewScrimColor);
                 int scrimColorTrans = ColorUtils.setAlphaComponent(scrimColor, 0);
                 int[] colors = isAppOpening
                         ? new int[]{scrimColorTrans, scrimColor}
@@ -525,6 +532,30 @@
                             colors);
                     scrim.setDuration(CONTENT_SCRIM_DURATION);
                     scrim.setInterpolator(DEACCEL_1_5);
+
+                    if (useTaskbarColor) {
+                        // Hide the taskbar background color since it would duplicate the scrim.
+                        scrim.addListener(new AnimatorListenerAdapter() {
+                            @Override
+                            public void onAnimationStart(Animator animation) {
+                                LauncherTaskbarUIController taskbarUIController =
+                                        mLauncher.getTaskbarUIController();
+                                if (taskbarUIController != null) {
+                                    taskbarUIController.forceHideBackground(true);
+                                }
+                            }
+
+                            @Override
+                            public void onAnimationEnd(Animator animation) {
+                                LauncherTaskbarUIController taskbarUIController =
+                                        mLauncher.getTaskbarUIController();
+                                if (taskbarUIController != null) {
+                                    taskbarUIController.forceHideBackground(false);
+                                }
+                            }
+                        });
+                    }
+
                     launcherAnimator.play(scrim);
                 }
             }
@@ -639,6 +670,10 @@
                 if (v instanceof BubbleTextView) {
                     ((BubbleTextView) v).setStayPressed(false);
                 }
+                LauncherTaskbarUIController taskbarController = mLauncher.getTaskbarUIController();
+                if (taskbarController != null) {
+                    taskbarController.showEdu();
+                }
                 openingTargets.release();
             }
         });
@@ -1047,7 +1082,7 @@
             mLauncherOpenTransition = RemoteAnimationAdapterCompat.buildRemoteTransition(
                     new LauncherAnimationRunner(mHandler, mWallpaperOpenTransitionRunner,
                             false /* startAtFrontOfQueue */));
-            mLauncherOpenTransition.addHomeOpenCheck();
+            mLauncherOpenTransition.addHomeOpenCheck(mLauncher.getComponentName());
             SystemUiProxy.INSTANCE.getNoCreate().registerRemoteTransition(mLauncherOpenTransition);
         }
     }
@@ -1088,7 +1123,15 @@
     }
 
     private boolean launcherIsATargetWithMode(RemoteAnimationTargetCompat[] targets, int mode) {
-        return taskIsATargetWithMode(targets, mLauncher.getTaskId(), mode);
+        for (RemoteAnimationTargetCompat target : targets) {
+            if (target.mode == mode && target.taskInfo != null
+                    // Compare component name instead of task-id because transitions will promote
+                    // the target up to the root task while getTaskId returns the leaf.
+                    && target.taskInfo.topActivity.equals(mLauncher.getComponentName())) {
+                return true;
+            }
+        }
+        return false;
     }
 
     /**
diff --git a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatEduDialog.java b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatEduDialog.java
index 14b0c5d..c7c2567 100644
--- a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatEduDialog.java
+++ b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatEduDialog.java
@@ -85,7 +85,7 @@
         mSampleHotseat = findViewById(R.id.sample_prediction);
 
         DeviceProfile grid = mActivityContext.getDeviceProfile();
-        Rect padding = grid.getHotseatLayoutPadding();
+        Rect padding = grid.getHotseatLayoutPadding(getContext());
 
         mSampleHotseat.getLayoutParams().height = grid.cellHeightPx;
         mSampleHotseat.setGridSize(grid.numShownHotseatIcons, 1);
diff --git a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
index 85e5ab0..b40a1d5 100644
--- a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
+++ b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
@@ -262,10 +262,6 @@
         } else {
             removeOutlineDrawings();
         }
-
-        if (mLauncher.getTaskbarUIController() != null) {
-            mLauncher.getTaskbarUIController().onHotseatUpdated();
-        }
     }
 
     private void removeOutlineDrawings() {
diff --git a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index f01ff8b..5777fb9 100644
--- a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -108,6 +108,13 @@
         }
     };
 
+    private final Runnable mOpaquenessListener = new Runnable() {
+        @Override
+        public void run() {
+            dispatchTransactionSurface(mDepth);
+        }
+    };
+
     private final Launcher mLauncher;
     /**
      * Blur radius when completely zoomed out, in pixels.
@@ -129,6 +136,10 @@
      * If we're launching and app and should not be blurring the screen for performance reasons.
      */
     private boolean mBlurDisabledForAppLaunch;
+    /**
+     * If we requested early wake-up offsets to SurfaceFlinger.
+     */
+    private boolean mInEarlyWakeUp;
 
     // Workaround for animating the depth when multiwindow mode changes.
     private boolean mIgnoreStateChangesDuringMultiWindowAnimation = false;
@@ -154,23 +165,28 @@
                     if (windowToken != null) {
                         mWallpaperManager.setWallpaperZoomOut(windowToken, mDepth);
                     }
-                    CrossWindowBlurListeners.getInstance().addListener(mLauncher.getMainExecutor(),
-                            mCrossWindowBlurListener);
+                    onAttached();
                 }
 
                 @Override
                 public void onViewDetachedFromWindow(View view) {
                     CrossWindowBlurListeners.getInstance().removeListener(mCrossWindowBlurListener);
+                    mLauncher.getScrimView().removeOpaquenessListener(mOpaquenessListener);
                 }
             };
             mLauncher.getRootView().addOnAttachStateChangeListener(mOnAttachListener);
             if (mLauncher.getRootView().isAttachedToWindow()) {
-                CrossWindowBlurListeners.getInstance().addListener(mLauncher.getMainExecutor(),
-                        mCrossWindowBlurListener);
+                onAttached();
             }
         }
     }
 
+    private void onAttached() {
+        CrossWindowBlurListeners.getInstance().addListener(mLauncher.getMainExecutor(),
+                mCrossWindowBlurListener);
+        mLauncher.getScrimView().addOpaquenessListener(mOpaquenessListener);
+    }
+
     /**
      * Sets if the underlying activity is started or not
      */
@@ -258,7 +274,7 @@
     public void onOverlayScrollChanged(float progress) {
         // Round out the progress to dedupe frequent, non-perceptable updates
         int progressI = (int) (progress * 256);
-        float progressF = progressI / 256f;
+        float progressF = Utilities.boundToRange(progressI / 256f, 0f, 1f);
         if (Float.compare(mOverlayScrollProgress, progressF) == 0) {
             return;
         }
@@ -286,10 +302,21 @@
 
             int blur = opaque || isOverview || !mCrossWindowBlursEnabled
                     || mBlurDisabledForAppLaunch ? 0 : (int) (depth * mMaxBlurRadius);
-            new SurfaceControl.Transaction()
+            SurfaceControl.Transaction transaction = new SurfaceControl.Transaction()
                     .setBackgroundBlurRadius(mSurface, blur)
-                    .setOpaque(mSurface, opaque)
-                    .apply();
+                    .setOpaque(mSurface, opaque);
+
+            // Set early wake-up flags when we know we're executing an expensive operation, this way
+            // SurfaceFlinger will adjust its internal offsets to avoid jank.
+            boolean wantsEarlyWakeUp = depth > 0 && depth < 1;
+            if (wantsEarlyWakeUp && !mInEarlyWakeUp) {
+                transaction.setEarlyWakeupStart();
+                mInEarlyWakeUp = true;
+            } else if (!wantsEarlyWakeUp && mInEarlyWakeUp) {
+                transaction.setEarlyWakeupEnd();
+                mInEarlyWakeUp = false;
+            }
+            transaction.apply();
         }
         return true;
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/ButtonProvider.java b/quickstep/src/com/android/launcher3/taskbar/ButtonProvider.java
deleted file mode 100644
index 540f748..0000000
--- a/quickstep/src/com/android/launcher3/taskbar/ButtonProvider.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.launcher3.taskbar;
-
-import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_BACK;
-import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_HOME;
-import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_IME_SWITCH;
-import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_RECENTS;
-
-import android.annotation.DrawableRes;
-import android.view.View;
-import android.widget.ImageView;
-
-import com.android.launcher3.R;
-import com.android.launcher3.taskbar.TaskbarNavButtonController.TaskbarButton;
-
-/**
- * Creates Buttons for Taskbar for 3 button nav.
- * Can add animations and state management for buttons in this class as things progress.
- */
-public class ButtonProvider {
-
-    private final int mMarginLeftRight;
-    private final TaskbarActivityContext mContext;
-
-    public ButtonProvider(TaskbarActivityContext context) {
-        mContext = context;
-        mMarginLeftRight = context.getResources()
-                .getDimensionPixelSize(R.dimen.taskbar_icon_spacing);
-    }
-
-    public View getBack() {
-        // Back button
-        return getButtonForDrawable(R.drawable.ic_sysbar_back, BUTTON_BACK);
-    }
-
-    public View getDown() {
-        // Ime down button
-        return getButtonForDrawable(R.drawable.ic_sysbar_back, BUTTON_BACK);
-    }
-
-    public View getHome() {
-        // Home button
-        return getButtonForDrawable(R.drawable.ic_sysbar_home, BUTTON_HOME);
-    }
-
-    public View getRecents() {
-        // Recents button
-        return getButtonForDrawable(R.drawable.ic_sysbar_recent, BUTTON_RECENTS);
-    }
-
-    public View getImeSwitcher() {
-        // IME Switcher Button
-        return getButtonForDrawable(R.drawable.ic_ime_switcher, BUTTON_IME_SWITCH);
-    }
-
-    private View getButtonForDrawable(@DrawableRes int drawableId, @TaskbarButton int buttonType) {
-        ImageView buttonView = new ImageView(mContext);
-        buttonView.setImageResource(drawableId);
-        buttonView.setBackgroundResource(R.drawable.taskbar_icon_click_feedback_roundrect);
-        buttonView.setPadding(mMarginLeftRight, 0, mMarginLeftRight, 0);
-        buttonView.setOnClickListener(view -> mContext.onNavigationButtonClick(buttonType));
-        return buttonView;
-    }
-
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/ImeBarView.java b/quickstep/src/com/android/launcher3/taskbar/ImeBarView.java
deleted file mode 100644
index 287caab..0000000
--- a/quickstep/src/com/android/launcher3/taskbar/ImeBarView.java
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.launcher3.taskbar;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.View;
-import android.widget.RelativeLayout;
-
-import com.android.launcher3.views.ActivityContext;
-
-public class ImeBarView extends RelativeLayout {
-
-    private ButtonProvider mButtonProvider;
-    private View mImeView;
-
-    public ImeBarView(Context context) {
-        this(context, null);
-    }
-
-    public ImeBarView(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
-    }
-
-    public ImeBarView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-    }
-
-    public void init(ButtonProvider buttonProvider) {
-        mButtonProvider = buttonProvider;
-
-        ActivityContext context = getActivityContext();
-        RelativeLayout.LayoutParams imeParams = new RelativeLayout.LayoutParams(
-                context.getDeviceProfile().iconSizePx,
-                context.getDeviceProfile().iconSizePx
-        );
-        RelativeLayout.LayoutParams downParams = new RelativeLayout.LayoutParams(imeParams);
-
-        imeParams.addRule(ALIGN_PARENT_END);
-        imeParams.setMarginEnd(context.getDeviceProfile().iconSizePx);
-        downParams.setMarginStart(context.getDeviceProfile().iconSizePx);
-        downParams.addRule(ALIGN_PARENT_START);
-
-        // Down Arrow
-        View downView = mButtonProvider.getDown();
-        downView.setLayoutParams(downParams);
-        downView.setRotation(-90);
-        addView(downView);
-
-        // IME switcher button
-        mImeView = mButtonProvider.getImeSwitcher();
-        mImeView.setLayoutParams(imeParams);
-        addView(mImeView);
-    }
-
-    public void setImeSwitcherVisibility(boolean show) {
-        mImeView.setVisibility(show ? VISIBLE : GONE);
-    }
-
-    private <T extends Context & ActivityContext> T getActivityContext() {
-        return ActivityContext.lookupContext(getContext());
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index c2d107c..da10bfb 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -15,42 +15,66 @@
  */
 package com.android.launcher3.taskbar;
 
+import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
+import static com.android.launcher3.taskbar.TaskbarViewController.ALPHA_INDEX_HOME;
+
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
 import android.graphics.Rect;
-import android.graphics.RectF;
 import android.view.MotionEvent;
+import android.view.View;
 
-import androidx.annotation.Nullable;
+import androidx.annotation.NonNull;
 
 import com.android.launcher3.BaseQuickstepLauncher;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.QuickstepTransitionManager;
 import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.anim.PendingAnimation;
-import com.android.launcher3.states.StateAnimationConfig;
-
+import com.android.launcher3.anim.AnimatorListeners;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.util.MultiValueAlpha;
+import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
+import com.android.launcher3.util.OnboardingPrefs;
+import com.android.quickstep.AnimatedFloat;
+import com.android.quickstep.RecentsAnimationCallbacks;
+import com.android.quickstep.RecentsAnimationCallbacks.RecentsAnimationListener;
+import com.android.quickstep.RecentsAnimationController;
+import com.android.quickstep.SystemUiProxy;
+import com.android.quickstep.views.RecentsView;
+import com.android.systemui.shared.recents.model.ThumbnailData;
 
 /**
  * A data source which integrates with a Launcher instance
- * TODO: Rename to have Launcher prefix
  */
-
 public class LauncherTaskbarUIController extends TaskbarUIController {
 
     private final BaseQuickstepLauncher mLauncher;
     private final TaskbarStateHandler mTaskbarStateHandler;
-    private final TaskbarAnimationController mTaskbarAnimationController;
-    private final TaskbarHotseatController mHotseatController;
 
     private final TaskbarActivityContext mContext;
-    final TaskbarDragLayer mTaskbarDragLayer;
-    final TaskbarView mTaskbarView;
+    private final TaskbarDragLayer mTaskbarDragLayer;
+    private final TaskbarView mTaskbarView;
 
-    private @Nullable Animator mAnimator;
-    private boolean mIsAnimatingToLauncher;
+    private final AnimatedFloat mIconAlignmentForResumedState =
+            new AnimatedFloat(this::onIconAlignmentRatioChanged);
+    private final AnimatedFloat mIconAlignmentForGestureState =
+            new AnimatedFloat(this::onIconAlignmentRatioChanged);
+
+    private final DeviceProfile.OnDeviceProfileChangeListener mOnDeviceProfileChangeListener =
+            this::onStashedInAppChanged;
+
+    // Initialized in init.
+    private TaskbarControllers mControllers;
+    private AnimatedFloat mTaskbarBackgroundAlpha;
+    private AnimatedFloat mTaskbarOverrideBackgroundAlpha;
+    private AlphaProperty mIconAlphaForHome;
+    private boolean mIsAnimatingToLauncherViaResume;
+    private boolean mIsAnimatingToLauncherViaGesture;
+    private TaskbarKeyguardController mKeyguardController;
+
+    private LauncherState mTargetStateOverride = null;
 
     public LauncherTaskbarUIController(
             BaseQuickstepLauncher launcher, TaskbarActivityContext context) {
@@ -60,157 +84,150 @@
 
         mLauncher = launcher;
         mTaskbarStateHandler = mLauncher.getTaskbarStateHandler();
-        mTaskbarAnimationController = new TaskbarAnimationController(mLauncher,
-                createTaskbarAnimationControllerCallbacks());
-        mHotseatController = new TaskbarHotseatController(
-                mLauncher, mTaskbarView::updateHotseatItems);
     }
 
     @Override
-    protected void onCreate() {
-        mTaskbarStateHandler.setAnimationController(mTaskbarAnimationController);
-        mTaskbarAnimationController.init();
-        mHotseatController.init();
-        setTaskbarViewVisible(!mLauncher.hasBeenResumed());
-        alignRealHotseatWithTaskbar();
+    protected void init(TaskbarControllers taskbarControllers) {
+        mControllers = taskbarControllers;
+
+        mTaskbarBackgroundAlpha = mControllers.taskbarDragLayerController
+                .getTaskbarBackgroundAlpha();
+        mTaskbarOverrideBackgroundAlpha = mControllers.taskbarDragLayerController
+                .getOverrideBackgroundAlpha();
+
+        MultiValueAlpha taskbarIconAlpha = mControllers.taskbarViewController.getTaskbarIconAlpha();
+        mIconAlphaForHome = taskbarIconAlpha.getProperty(ALPHA_INDEX_HOME);
+
         mLauncher.setTaskbarUIController(this);
+        mKeyguardController = taskbarControllers.taskbarKeyguardController;
+
+        onLauncherResumedOrPaused(mLauncher.hasBeenResumed());
+        mIconAlignmentForResumedState.finishAnimation();
+        onIconAlignmentRatioChanged();
+
+        onStashedInAppChanged(mLauncher.getDeviceProfile());
+        mLauncher.addOnDeviceProfileChangeListener(mOnDeviceProfileChangeListener);
     }
 
     @Override
     protected void onDestroy() {
-        if (mAnimator != null) {
-            // End this first, in case it relies on properties that are about to be cleaned up.
-            mAnimator.end();
-        }
-        mTaskbarStateHandler.setAnimationController(null);
-        mTaskbarAnimationController.cleanup();
-        mHotseatController.cleanup();
-        setTaskbarViewVisible(true);
+        onLauncherResumedOrPaused(false);
+        mIconAlignmentForResumedState.finishAnimation();
+        mIconAlignmentForGestureState.finishAnimation();
+
+        mLauncher.removeOnDeviceProfileChangeListener(mOnDeviceProfileChangeListener);
         mLauncher.getHotseat().setIconsAlpha(1f);
         mLauncher.setTaskbarUIController(null);
     }
 
     @Override
     protected boolean isTaskbarTouchable() {
-        return !mIsAnimatingToLauncher;
+        return !isAnimatingToLauncher() && !mControllers.taskbarStashController.isStashed();
     }
 
-    private TaskbarAnimationControllerCallbacks createTaskbarAnimationControllerCallbacks() {
-        return new TaskbarAnimationControllerCallbacks() {
-            @Override
-            public void updateTaskbarBackgroundAlpha(float alpha) {
-                mTaskbarDragLayer.setTaskbarBackgroundAlpha(alpha);
-            }
+    private boolean isAnimatingToLauncher() {
+        return mIsAnimatingToLauncherViaResume || mIsAnimatingToLauncherViaGesture;
+    }
 
-            @Override
-            public void updateTaskbarVisibilityAlpha(float alpha) {
-                mTaskbarView.setAlpha(alpha);
-            }
-
-            @Override
-            public void updateImeBarVisibilityAlpha(float alpha) {
-                mTaskbarDragLayer.updateImeBarVisibilityAlpha(alpha);
-            }
-
-            @Override
-            public void updateTaskbarScale(float scale) {
-                mTaskbarView.setScaleX(scale);
-                mTaskbarView.setScaleY(scale);
-            }
-
-            @Override
-            public void updateTaskbarTranslationY(float translationY) {
-                if (translationY < 0) {
-                    // Resize to accommodate the max translation we'll reach.
-                    mContext.setTaskbarWindowHeight(mContext.getDeviceProfile().taskbarSize
-                            + mLauncher.getHotseat().getTaskbarOffsetY());
-                } else {
-                    mContext.setTaskbarWindowHeight(mContext.getDeviceProfile().taskbarSize);
-                }
-                mTaskbarView.setTranslationY(translationY);
-            }
-        };
+    @Override
+    protected void updateContentInsets(Rect outContentInsets) {
+        int contentHeight = mControllers.taskbarStashController.getContentHeight();
+        outContentInsets.top = mTaskbarDragLayer.getHeight() - contentHeight;
     }
 
     /**
      * Should be called from onResume() and onPause(), and animates the Taskbar accordingly.
      */
     public void onLauncherResumedOrPaused(boolean isResumed) {
+        if (mKeyguardController.isScreenOff()) {
+            if (!isResumed) {
+                return;
+            } else {
+                // Resuming implicitly means device unlocked
+                mKeyguardController.setScreenOn();
+            }
+        }
+
         long duration = QuickstepTransitionManager.CONTENT_ALPHA_DURATION;
-        if (mAnimator != null) {
-            mAnimator.cancel();
+        ObjectAnimator anim = mIconAlignmentForResumedState.animateToValue(
+                getCurrentIconAlignmentRatio(), isResumed ? 1 : 0)
+                .setDuration(duration);
+
+        anim.addListener(AnimatorListeners.forEndCallback(
+                () -> mIsAnimatingToLauncherViaResume = false));
+        anim.start();
+        mIsAnimatingToLauncherViaResume = isResumed;
+
+        if (!isResumed) {
+            TaskbarStashController stashController = mControllers.taskbarStashController;
+            stashController.animateToIsStashed(stashController.isStashedInApp(), duration);
         }
-        if (isResumed) {
-            mAnimator = createAnimToLauncher(null, duration);
-        } else {
-            mAnimator = createAnimToApp(duration);
-        }
-        mAnimator.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                mAnimator = null;
-            }
-        });
-        mAnimator.start();
+        SystemUiProxy.INSTANCE.get(mContext).notifyTaskbarStatus(!isResumed,
+                mControllers.taskbarStashController.isStashedInApp());
     }
 
     /**
-     * Create Taskbar animation when going from an app to Launcher.
+     * Create Taskbar animation when going from an app to Launcher as part of recents transition.
      * @param toState If known, the state we will end up in when reaching Launcher.
+     * @param callbacks callbacks to track the recents animation lifecycle. The state change is
+     *                 automatically reset once the recents animation finishes
      */
-    public Animator createAnimToLauncher(@Nullable LauncherState toState, long duration) {
-        PendingAnimation anim = new PendingAnimation(duration);
-        anim.add(mTaskbarAnimationController.createAnimToBackgroundAlpha(0, duration));
-        if (toState != null) {
-            mTaskbarStateHandler.setStateWithAnimation(toState, new StateAnimationConfig(), anim);
+    public Animator createAnimToLauncher(@NonNull LauncherState toState,
+            @NonNull RecentsAnimationCallbacks callbacks, long duration) {
+        TaskbarStashController stashController = mControllers.taskbarStashController;
+        ObjectAnimator animator = mIconAlignmentForGestureState
+                .animateToValue(1)
+                .setDuration(duration);
+        animator.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mTargetStateOverride = null;
+                animator.removeListener(this);
+            }
+
+            @Override
+            public void onAnimationStart(Animator animation) {
+                mTargetStateOverride = toState;
+                mIsAnimatingToLauncherViaGesture = true;
+                // TODO: base this on launcher state
+                stashController.animateToIsStashed(false, duration);
+            }
+        });
+
+        TaskBarRecentsAnimationListener listener = new TaskBarRecentsAnimationListener(callbacks);
+        callbacks.addListener(listener);
+        RecentsView recentsView = mLauncher.getOverviewPanel();
+        recentsView.setTaskLaunchListener(() -> {
+            listener.endGestureStateOverride(true);
+            callbacks.removeListener(listener);
+        });
+
+        return animator;
+    }
+
+    private float getCurrentIconAlignmentRatio() {
+        return Math.max(mIconAlignmentForResumedState.value, mIconAlignmentForGestureState.value);
+    }
+
+    private void onIconAlignmentRatioChanged() {
+        if (mControllers == null) {
+            return;
         }
+        float alignment = getCurrentIconAlignmentRatio();
+        mControllers.taskbarViewController.setLauncherIconAlignment(
+                alignment, mLauncher.getDeviceProfile());
 
-        anim.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationStart(Animator animation) {
-                mIsAnimatingToLauncher = true;
-                mTaskbarView.setHolesAllowedInLayout(true);
-                mTaskbarView.updateHotseatItemsVisibility();
-            }
+        mTaskbarBackgroundAlpha.updateValue(1 - alignment);
 
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                mIsAnimatingToLauncher = false;
-                setTaskbarViewVisible(false);
-            }
-        });
-
-        return anim.buildAnim();
-    }
-
-    private Animator createAnimToApp(long duration) {
-        PendingAnimation anim = new PendingAnimation(duration);
-        anim.add(mTaskbarAnimationController.createAnimToBackgroundAlpha(1, duration));
-        anim.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationStart(Animator animation) {
-                mTaskbarView.updateHotseatItemsVisibility();
-                setTaskbarViewVisible(true);
-            }
-
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                mTaskbarView.setHolesAllowedInLayout(false);
-            }
-        });
-        return anim.buildAnim();
-    }
-
-    @Override
-    protected void onImeVisible(TaskbarDragLayer containerView, boolean isVisible) {
-        mTaskbarAnimationController.animateToVisibilityForIme(isVisible ? 0 : 1);
-    }
-
-    /**
-     * Should be called when one or more items in the Hotseat have changed.
-     */
-    public void onHotseatUpdated() {
-        mHotseatController.onHotseatUpdated();
+        LauncherState state = mTargetStateOverride != null ? mTargetStateOverride
+                : mLauncher.getStateManager().getState();
+        if ((state.getVisibleElements(mLauncher) & HOTSEAT_ICONS) != 0) {
+            // If the hotseat icons are visible, then switch taskbar in last frame
+            setTaskbarViewVisible(alignment < 1);
+        } else {
+            mLauncher.getHotseat().setIconsAlpha(1);
+            mIconAlphaForHome.setValue(1 - alignment);
+        }
     }
 
     /**
@@ -222,54 +239,88 @@
     }
 
     public boolean isDraggingItem() {
-        return mTaskbarView.isDraggingItem();
+        return mContext.getDragController().isDragging();
     }
 
-    /**
-     * Pads the Hotseat to line up exactly with Taskbar's copy of the Hotseat.
-     */
-    @Override
-    public void alignRealHotseatWithTaskbar() {
-        Rect hotseatBounds = new Rect();
-        DeviceProfile grid = mLauncher.getDeviceProfile();
-        int hotseatHeight = grid.workspacePadding.bottom + grid.taskbarSize;
-        int taskbarOffset = mLauncher.getHotseat().getTaskbarOffsetY();
-        int hotseatTopDiff = hotseatHeight - grid.taskbarSize - taskbarOffset;
-        int hotseatBottomDiff = taskbarOffset;
-
-        RectF hotseatBoundsF = mTaskbarView.getHotseatBounds();
-        Utilities.scaleRectFAboutPivot(hotseatBoundsF, getTaskbarScaleOnHome(),
-                mTaskbarView.getPivotX(), mTaskbarView.getPivotY());
-        hotseatBoundsF.round(hotseatBounds);
-        mLauncher.getHotseat().setPadding(hotseatBounds.left,
-                hotseatBounds.top + hotseatTopDiff,
-                mTaskbarView.getWidth() - hotseatBounds.right,
-                mTaskbarView.getHeight() - hotseatBounds.bottom + hotseatBottomDiff);
+    public View getRootView() {
+        return mTaskbarDragLayer;
     }
 
-    /**
-     * Returns the ratio of the taskbar icon size on home vs in an app.
-     */
-    public float getTaskbarScaleOnHome() {
-        DeviceProfile inAppDp = mContext.getDeviceProfile();
-        DeviceProfile onHomeDp = mLauncher.getDeviceProfile();
-        return (float) onHomeDp.cellWidthPx / inAppDp.cellWidthPx;
-    }
-
-    void setTaskbarViewVisible(boolean isVisible) {
-        mTaskbarView.setIconsVisibility(isVisible);
+    private void setTaskbarViewVisible(boolean isVisible) {
+        mIconAlphaForHome.setValue(isVisible ? 1 : 0);
         mLauncher.getHotseat().setIconsAlpha(isVisible ? 0f : 1f);
     }
 
+    @Override
+    protected void onStashedInAppChanged() {
+        onStashedInAppChanged(mLauncher.getDeviceProfile());
+    }
+
+    private void onStashedInAppChanged(DeviceProfile deviceProfile) {
+        boolean taskbarStashedInApps = mControllers.taskbarStashController.isStashedInApp();
+        deviceProfile.isTaskbarPresentInApps = !taskbarStashedInApps;
+    }
+
     /**
-     * Contains methods that TaskbarAnimationController can call to interface with
-     * TaskbarController.
+     * Sets whether the background behind the taskbar/nav bar should be hidden.
      */
-    protected interface TaskbarAnimationControllerCallbacks {
-        void updateTaskbarBackgroundAlpha(float alpha);
-        void updateTaskbarVisibilityAlpha(float alpha);
-        void updateImeBarVisibilityAlpha(float alpha);
-        void updateTaskbarScale(float scale);
-        void updateTaskbarTranslationY(float translationY);
+    public void forceHideBackground(boolean forceHide) {
+        mTaskbarOverrideBackgroundAlpha.updateValue(forceHide ? 0 : 1);
+    }
+
+    /**
+     * Starts the taskbar education flow, if the user hasn't seen it yet.
+     */
+    public void showEdu() {
+        if (!FeatureFlags.ENABLE_TASKBAR_EDU.get()
+                || mLauncher.getOnboardingPrefs().getBoolean(OnboardingPrefs.TASKBAR_EDU_SEEN)) {
+            return;
+        }
+        mLauncher.getOnboardingPrefs().markChecked(OnboardingPrefs.TASKBAR_EDU_SEEN);
+
+        mControllers.taskbarEduController.showEdu();
+    }
+
+    /**
+     * Manually ends the taskbar education flow.
+     */
+    public void hideEdu() {
+        if (!FeatureFlags.ENABLE_TASKBAR_EDU.get()) {
+            return;
+        }
+
+        mControllers.taskbarEduController.hideEdu();
+    }
+
+    private final class TaskBarRecentsAnimationListener implements RecentsAnimationListener {
+        private final RecentsAnimationCallbacks mCallbacks;
+
+        TaskBarRecentsAnimationListener(RecentsAnimationCallbacks callbacks) {
+            mCallbacks = callbacks;
+        }
+
+        @Override
+        public void onRecentsAnimationCanceled(ThumbnailData thumbnailData) {
+            endGestureStateOverride(true);
+        }
+
+        @Override
+        public void onRecentsAnimationFinished(RecentsAnimationController controller) {
+            endGestureStateOverride(!controller.getFinishTargetIsLauncher());
+        }
+
+        private void endGestureStateOverride(boolean finishedToApp) {
+            mCallbacks.removeListener(this);
+            mIsAnimatingToLauncherViaGesture = false;
+
+            mIconAlignmentForGestureState
+                    .animateToValue(0)
+                    .start();
+
+            TaskbarStashController controller = mControllers.taskbarStashController;
+            if (finishedToApp) {
+                controller.animateToIsStashed(controller.isStashedInApp());
+            }
+        }
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
new file mode 100644
index 0000000..e871c25
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -0,0 +1,422 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_A11Y;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_A11Y_LONG_CLICK;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_BACK;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_HOME;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_IME_SWITCH;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_RECENTS;
+import static com.android.launcher3.taskbar.TaskbarViewController.ALPHA_INDEX_IME;
+import static com.android.launcher3.taskbar.TaskbarViewController.ALPHA_INDEX_KEYGUARD;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_A11Y_BUTTON_CLICKABLE;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_A11Y_BUTTON_LONG_CLICKABLE;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_BACK_DISABLED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_HOME_DISABLED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_IME_SHOWING;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_IME_SWITCHER_SHOWING;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
+
+import android.animation.ObjectAnimator;
+import android.annotation.DrawableRes;
+import android.annotation.IdRes;
+import android.graphics.Rect;
+import android.graphics.Region;
+import android.graphics.Region.Op;
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.util.Property;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.View.OnHoverListener;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+
+import com.android.launcher3.LauncherAnimUtils;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AlphaUpdateListener;
+import com.android.launcher3.taskbar.TaskbarNavButtonController.TaskbarButton;
+import com.android.launcher3.taskbar.contextual.RotationButton;
+import com.android.launcher3.taskbar.contextual.RotationButtonController;
+import com.android.launcher3.util.MultiValueAlpha;
+import com.android.quickstep.AnimatedFloat;
+
+import java.util.ArrayList;
+import java.util.function.IntPredicate;
+
+/**
+ * Controller for managing nav bar buttons in taskbar
+ */
+public class NavbarButtonsViewController {
+
+    private final Rect mTempRect = new Rect();
+
+    private static final int FLAG_SWITCHER_SUPPORTED = 1 << 0;
+    private static final int FLAG_IME_VISIBLE = 1 << 1;
+    private static final int FLAG_ROTATION_BUTTON_VISIBLE = 1 << 2;
+    private static final int FLAG_A11Y_VISIBLE = 1 << 3;
+    private static final int FLAG_ONLY_BACK_FOR_BOUNCER_VISIBLE = 1 << 4;
+    private static final int FLAG_KEYGUARD_VISIBLE = 1 << 5;
+    private static final int FLAG_DISABLE_HOME = 1 << 6;
+    private static final int FLAG_DISABLE_RECENTS = 1 << 7;
+    private static final int FLAG_DISABLE_BACK = 1 << 8;
+
+    private static final int MASK_IME_SWITCHER_VISIBLE = FLAG_SWITCHER_SUPPORTED | FLAG_IME_VISIBLE;
+
+    private View.OnLongClickListener mA11yLongClickListener;
+    private final ArrayList<StatePropertyHolder> mPropertyHolders = new ArrayList<>();
+    private final ArrayList<View> mAllButtons = new ArrayList<>();
+    private int mState;
+
+    private final TaskbarActivityContext mContext;
+    private final FrameLayout mNavButtonsView;
+    private final ViewGroup mNavButtonContainer;
+    // Used for IME+A11Y buttons
+    private final ViewGroup mEndContextualContainer;
+    private final ViewGroup mStartContextualContainer;
+
+    // Initialized in init.
+    private TaskbarControllers mControllers;
+    private View mA11yButton;
+    private int mSysuiStateFlags;
+    private View mBackButton;
+
+    public NavbarButtonsViewController(TaskbarActivityContext context, FrameLayout navButtonsView) {
+        mContext = context;
+        mNavButtonsView = navButtonsView;
+        mNavButtonContainer = mNavButtonsView.findViewById(R.id.end_nav_buttons);
+        mEndContextualContainer = mNavButtonsView.findViewById(R.id.end_contextual_buttons);
+        mStartContextualContainer = mNavButtonsView.findViewById(R.id.start_contextual_buttons);
+    }
+
+    /**
+     * Initializes the controller
+     */
+    public void init(TaskbarControllers controllers) {
+        mControllers = controllers;
+        mNavButtonsView.getLayoutParams().height = mContext.getDeviceProfile().taskbarSize;
+
+        mA11yLongClickListener = view -> {
+            mControllers.navButtonController.onButtonClick(BUTTON_A11Y_LONG_CLICK);
+            return true;
+        };
+
+        mPropertyHolders.add(new StatePropertyHolder(
+                mControllers.taskbarViewController.getTaskbarIconAlpha()
+                        .getProperty(ALPHA_INDEX_IME),
+                flags -> (flags & FLAG_IME_VISIBLE) == 0, MultiValueAlpha.VALUE, 1, 0));
+
+        // IME switcher
+        View imeSwitcherButton = addButton(R.drawable.ic_ime_switcher, BUTTON_IME_SWITCH,
+                mEndContextualContainer, mControllers.navButtonController, R.id.ime_switcher);
+        mPropertyHolders.add(new StatePropertyHolder(imeSwitcherButton,
+                flags -> ((flags & MASK_IME_SWITCHER_VISIBLE) == MASK_IME_SWITCHER_VISIBLE)
+                        && ((flags & FLAG_ROTATION_BUTTON_VISIBLE) == 0)
+                        && ((flags & FLAG_A11Y_VISIBLE) == 0)));
+
+        View imeDownButton = addButton(R.drawable.ic_sysbar_back, BUTTON_BACK,
+                mStartContextualContainer, mControllers.navButtonController, R.id.back);
+        imeDownButton.setRotation(Utilities.isRtl(mContext.getResources()) ? 90 : -90);
+        // Rotate when Ime visible
+        mPropertyHolders.add(new StatePropertyHolder(imeDownButton,
+                flags -> (flags & FLAG_IME_VISIBLE) != 0));
+
+        mPropertyHolders.add(new StatePropertyHolder(
+                mControllers.taskbarViewController.getTaskbarIconAlpha()
+                        .getProperty(ALPHA_INDEX_KEYGUARD),
+                flags -> (flags & FLAG_KEYGUARD_VISIBLE) == 0, MultiValueAlpha.VALUE, 1, 0));
+
+        mPropertyHolders.add(new StatePropertyHolder(mControllers.taskbarDragLayerController
+                .getKeyguardBgTaskbar(),
+                flags -> (flags & FLAG_KEYGUARD_VISIBLE) == 0, AnimatedFloat.VALUE, 1, 0));
+
+        if (mContext.isThreeButtonNav()) {
+            initButtons(mNavButtonContainer, mEndContextualContainer,
+                    mControllers.navButtonController);
+
+            // Animate taskbar background when IME shows
+            mPropertyHolders.add(new StatePropertyHolder(
+                    mControllers.taskbarDragLayerController.getNavbarBackgroundAlpha(),
+                    flags -> (flags & FLAG_IME_VISIBLE) != 0 ||
+                            (flags & FLAG_ONLY_BACK_FOR_BOUNCER_VISIBLE) != 0,
+                    AnimatedFloat.VALUE, 1, 0));
+
+            // Rotation button
+            RotationButton rotationButton = new RotationButtonImpl(
+                    addButton(mEndContextualContainer, R.id.rotate_suggestion));
+            rotationButton.hide();
+            mControllers.rotationButtonController.setRotationButton(rotationButton);
+        } else {
+            mControllers.rotationButtonController.setRotationButton(new RotationButton() {});
+        }
+
+        applyState();
+        mPropertyHolders.forEach(StatePropertyHolder::endAnimation);
+    }
+
+    private void initButtons(ViewGroup navContainer, ViewGroup endContainer,
+            TaskbarNavButtonController navButtonController) {
+
+        mBackButton = addButton(R.drawable.ic_sysbar_back, BUTTON_BACK,
+                mNavButtonContainer, mControllers.navButtonController, R.id.back);
+        mPropertyHolders.add(new StatePropertyHolder(mBackButton,
+                flags -> (flags & FLAG_IME_VISIBLE) == 0 &&
+                        (flags & FLAG_DISABLE_BACK) == 0));
+        // Hide when keyguard is showing, show when bouncer is showing
+        mPropertyHolders.add(new StatePropertyHolder(mBackButton,
+                flags -> (flags & FLAG_KEYGUARD_VISIBLE) == 0 ||
+                        (flags & FLAG_ONLY_BACK_FOR_BOUNCER_VISIBLE) != 0));
+
+        // home and recents buttons
+        View homeButton = addButton(R.drawable.ic_sysbar_home, BUTTON_HOME, navContainer,
+                navButtonController, R.id.home);
+        mPropertyHolders.add(new StatePropertyHolder(homeButton,
+                flags -> (flags & FLAG_IME_VISIBLE) == 0 &&
+                        (flags & FLAG_KEYGUARD_VISIBLE) == 0 &&
+                        (flags & FLAG_DISABLE_HOME) == 0));
+        View recentsButton = addButton(R.drawable.ic_sysbar_recent, BUTTON_RECENTS,
+                navContainer, navButtonController, R.id.recent_apps);
+        mPropertyHolders.add(new StatePropertyHolder(recentsButton,
+                flags -> (flags & FLAG_IME_VISIBLE) == 0 &&
+                        (flags & FLAG_KEYGUARD_VISIBLE) == 0 &&
+                        (flags & FLAG_DISABLE_RECENTS) == 0));
+
+        // A11y button
+        mA11yButton = addButton(R.drawable.ic_sysbar_accessibility_button, BUTTON_A11Y,
+                endContainer, navButtonController, R.id.accessibility_button);
+        mPropertyHolders.add(new StatePropertyHolder(mA11yButton,
+                flags -> (flags & FLAG_A11Y_VISIBLE) != 0
+                        && (flags & FLAG_ROTATION_BUTTON_VISIBLE) == 0));
+        mA11yButton.setOnLongClickListener(mA11yLongClickListener);
+    }
+
+    public void updateStateForSysuiFlags(int systemUiStateFlags, boolean forceUpdate) {
+        boolean isImeVisible = (systemUiStateFlags & SYSUI_STATE_IME_SHOWING) != 0;
+        boolean isImeSwitcherShowing = (systemUiStateFlags & SYSUI_STATE_IME_SWITCHER_SHOWING) != 0;
+        boolean a11yVisible = (systemUiStateFlags & SYSUI_STATE_A11Y_BUTTON_CLICKABLE) != 0;
+        boolean a11yLongClickable =
+                (systemUiStateFlags & SYSUI_STATE_A11Y_BUTTON_LONG_CLICKABLE) != 0;
+        boolean isHomeDisabled =
+                (systemUiStateFlags & SYSUI_STATE_HOME_DISABLED) != 0;
+        boolean isRecentsDisabled =
+                (systemUiStateFlags & SYSUI_STATE_OVERVIEW_DISABLED) != 0;
+        boolean isBackDisabled =
+                (systemUiStateFlags & SYSUI_STATE_BACK_DISABLED) != 0;
+
+        if (!forceUpdate && systemUiStateFlags == mSysuiStateFlags) {
+            return;
+        }
+        mSysuiStateFlags = systemUiStateFlags;
+
+        updateStateForFlag(FLAG_IME_VISIBLE, isImeVisible);
+        updateStateForFlag(FLAG_SWITCHER_SUPPORTED, isImeSwitcherShowing);
+        updateStateForFlag(FLAG_A11Y_VISIBLE, a11yVisible);
+        updateStateForFlag(FLAG_DISABLE_HOME, isHomeDisabled);
+        updateStateForFlag(FLAG_DISABLE_RECENTS, isRecentsDisabled);
+        updateStateForFlag(FLAG_DISABLE_BACK, isBackDisabled);
+
+        if (mA11yButton != null) {
+            // Only used in 3 button
+            mA11yButton.setLongClickable(a11yLongClickable);
+        }
+        applyState();
+    }
+
+    /**
+     * Should be called when we need to show back button for bouncer
+     */
+    public void setBackForBouncer(boolean isBouncerVisible) {
+        updateStateForFlag(FLAG_ONLY_BACK_FOR_BOUNCER_VISIBLE, isBouncerVisible);
+        applyState();
+    }
+
+    /**
+     * Slightly misnamed, but should be called when keyguard OR AOD is showing
+     */
+    public void setKeyguardVisible(boolean isKeyguardVisible) {
+        updateStateForFlag(FLAG_KEYGUARD_VISIBLE, isKeyguardVisible);
+        applyState();
+    }
+
+    /**
+     * Returns true if IME bar is visible
+     */
+    public boolean isImeVisible() {
+        return (mState & FLAG_IME_VISIBLE) != 0;
+    }
+
+    /**
+     * Adds the bounds corresponding to all visible buttons to provided region
+     */
+    public void addVisibleButtonsRegion(TaskbarDragLayer parent, Region outRegion) {
+        int count = mAllButtons.size();
+        for (int i = 0; i < count; i++) {
+            View button = mAllButtons.get(i);
+            if (button.getVisibility() == View.VISIBLE) {
+                parent.getDescendantRectRelativeToSelf(button, mTempRect);
+                outRegion.op(mTempRect, Op.UNION);
+            }
+        }
+    }
+
+    /**
+     * Does not call {@link #applyState()}. Don't forget to!
+     */
+    private void updateStateForFlag(int flag, boolean enabled) {
+        if (enabled) {
+            mState |= flag;
+        } else {
+            mState &= ~flag;
+        }
+    }
+
+    private void applyState() {
+        int count = mPropertyHolders.size();
+        for (int i = 0; i < count; i++) {
+            mPropertyHolders.get(i).setState(mState);
+        }
+    }
+
+    private ImageView addButton(@DrawableRes int drawableId, @TaskbarButton int buttonType,
+            ViewGroup parent, TaskbarNavButtonController navButtonController, @IdRes int id) {
+        ImageView buttonView = addButton(parent, id);
+        buttonView.setImageResource(drawableId);
+        buttonView.setOnClickListener(view -> navButtonController.onButtonClick(buttonType));
+        return buttonView;
+    }
+
+    private ImageView addButton(ViewGroup parent, int id) {
+        ImageView buttonView = (ImageView) mContext.getLayoutInflater()
+                .inflate(R.layout.taskbar_nav_button, parent, false);
+        buttonView.setId(id);
+        parent.addView(buttonView);
+        mAllButtons.add(buttonView);
+        return buttonView;
+    }
+
+    private class RotationButtonImpl implements RotationButton {
+
+        private final ImageView mButton;
+        private AnimatedVectorDrawable mImageDrawable;
+
+        RotationButtonImpl(ImageView button) {
+            mButton = button;
+        }
+
+        @Override
+        public void setRotationButtonController(RotationButtonController rotationButtonController) {
+            // TODO(b/187754252) UI polish, different icons based on light/dark context, etc
+            mImageDrawable = (AnimatedVectorDrawable) mButton.getContext()
+                    .getDrawable(rotationButtonController.getIconResId());
+            mButton.setImageDrawable(mImageDrawable);
+            mImageDrawable.setCallback(mButton);
+        }
+
+        @Override
+        public View getCurrentView() {
+            return mButton;
+        }
+
+        @Override
+        public void show() {
+            mButton.setVisibility(View.VISIBLE);
+            mState |= FLAG_ROTATION_BUTTON_VISIBLE;
+            applyState();
+        }
+
+        @Override
+        public void hide() {
+            mButton.setVisibility(View.GONE);
+            mState &= ~FLAG_ROTATION_BUTTON_VISIBLE;
+            applyState();
+        }
+
+        @Override
+        public boolean isVisible() {
+            return mButton.getVisibility() == View.VISIBLE;
+        }
+
+        @Override
+        public void updateIcon(int lightIconColor, int darkIconColor) {
+            // TODO(b/187754252): UI Polish
+        }
+
+        @Override
+        public void setOnClickListener(OnClickListener onClickListener) {
+            mButton.setOnClickListener(onClickListener);
+        }
+
+        @Override
+        public void setOnHoverListener(OnHoverListener onHoverListener) {
+            mButton.setOnHoverListener(onHoverListener);
+        }
+
+        @Override
+        public AnimatedVectorDrawable getImageDrawable() {
+            return mImageDrawable;
+        }
+
+        @Override
+        public void setDarkIntensity(float darkIntensity) {
+            // TODO(b/187754252) UI polish
+        }
+
+        @Override
+        public boolean acceptRotationProposal() {
+            return mButton.isAttachedToWindow();
+        }
+    }
+
+    private static class StatePropertyHolder {
+
+        private final float mEnabledValue, mDisabledValue;
+        private final ObjectAnimator mAnimator;
+        private final IntPredicate mEnableCondition;
+
+        private boolean mIsEnabled = true;
+
+        StatePropertyHolder(View view, IntPredicate enableCondition) {
+            this(view, enableCondition, LauncherAnimUtils.VIEW_ALPHA, 1, 0);
+            mAnimator.addListener(new AlphaUpdateListener(view));
+        }
+
+        <T> StatePropertyHolder(T target, IntPredicate enabledCondition,
+                Property<T, Float> property, float enabledValue, float disabledValue) {
+            mEnableCondition = enabledCondition;
+            mEnabledValue = enabledValue;
+            mDisabledValue = disabledValue;
+            mAnimator = ObjectAnimator.ofFloat(target, property, enabledValue, disabledValue);
+        }
+
+        public void setState(int flags) {
+            boolean isEnabled = mEnableCondition.test(flags);
+            if (mIsEnabled != isEnabled) {
+                mIsEnabled = isEnabled;
+                mAnimator.cancel();
+                mAnimator.setFloatValues(mIsEnabled ? mEnabledValue : mDisabledValue);
+                mAnimator.start();
+            }
+        }
+
+        public void endAnimation() {
+            if (mAnimator.isRunning()) {
+                mAnimator.end();
+            }
+        }
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/StashedHandleView.java b/quickstep/src/com/android/launcher3/taskbar/StashedHandleView.java
new file mode 100644
index 0000000..0224bc4
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/StashedHandleView.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.View;
+
+import androidx.annotation.ColorInt;
+import androidx.core.content.ContextCompat;
+
+import com.android.launcher3.R;
+
+public class StashedHandleView extends View {
+
+    private final @ColorInt int mStashedHandleLightColor;
+    private final @ColorInt int mStashedHandleDarkColor;
+    private final Rect mSampledRegion = new Rect();
+    private final int[] mTmpArr = new int[2];
+
+    public StashedHandleView(Context context) {
+        this(context, null);
+    }
+
+    public StashedHandleView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public StashedHandleView(Context context, AttributeSet attrs, int defStyleAttr) {
+        this(context, attrs, defStyleAttr, 0);
+    }
+
+    public StashedHandleView(Context context, AttributeSet attrs, int defStyleAttr,
+            int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+
+        mStashedHandleLightColor = ContextCompat.getColor(context,
+                R.color.taskbar_stashed_handle_light_color);
+        mStashedHandleDarkColor = ContextCompat.getColor(context,
+                R.color.taskbar_stashed_handle_dark_color);
+    }
+
+    public void updateSampledRegion() {
+        getLocationOnScreen(mTmpArr);
+        mSampledRegion.set(mTmpArr[0], mTmpArr[1], mTmpArr[0] + getWidth(),
+                mTmpArr[1] + getHeight());
+    }
+
+    public Rect getSampledRegion() {
+        return mSampledRegion;
+    }
+
+    public void updateHandleColor(boolean isRegionDark) {
+        setBackgroundColor(isRegionDark ? mStashedHandleLightColor : mStashedHandleDarkColor);
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java b/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java
new file mode 100644
index 0000000..2858d7c
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import android.animation.Animator;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.graphics.Outline;
+import android.graphics.Rect;
+import android.view.View;
+import android.view.ViewOutlineProvider;
+
+import androidx.annotation.Nullable;
+
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.RevealOutlineAnimation;
+import com.android.launcher3.anim.RoundedRectRevealOutlineProvider;
+import com.android.launcher3.util.Executors;
+import com.android.quickstep.AnimatedFloat;
+import com.android.systemui.shared.navigationbar.RegionSamplingHelper;
+
+/**
+ * Handles properties/data collection, then passes the results to our stashed handle View to render.
+ */
+public class StashedHandleViewController {
+
+    /**
+     * The SharedPreferences key for whether the stashed handle region is dark.
+     */
+    private static final String SHARED_PREFS_STASHED_HANDLE_REGION_DARK_KEY =
+            "stashed_handle_region_is_dark";
+
+    private final TaskbarActivityContext mActivity;
+    private final SharedPreferences mPrefs;
+    private final StashedHandleView mStashedHandleView;
+    private final int mStashedHandleWidth;
+    private final int mStashedHandleHeight;
+    private final RegionSamplingHelper mRegionSamplingHelper;
+    private final AnimatedFloat mTaskbarStashedHandleAlpha = new AnimatedFloat(
+            this::updateStashedHandleAlpha);
+    private final AnimatedFloat mTaskbarStashedHandleHintScale = new AnimatedFloat(
+            this::updateStashedHandleHintScale);
+
+    // Initialized in init.
+    private TaskbarControllers mControllers;
+
+    // The bounds we want to clip to in the settled state when showing the stashed handle.
+    private final Rect mStashedHandleBounds = new Rect();
+    private float mStashedHandleRadius;
+
+    private boolean mIsAtStashedRevealBounds = true;
+
+    public StashedHandleViewController(TaskbarActivityContext activity,
+            StashedHandleView stashedHandleView) {
+        mActivity = activity;
+        mPrefs = Utilities.getPrefs(mActivity);
+        mStashedHandleView = stashedHandleView;
+        mStashedHandleView.updateHandleColor(
+                mPrefs.getBoolean(SHARED_PREFS_STASHED_HANDLE_REGION_DARK_KEY, false));
+        final Resources resources = mActivity.getResources();
+        mStashedHandleWidth = resources.getDimensionPixelSize(R.dimen.taskbar_stashed_handle_width);
+        mStashedHandleHeight = resources.getDimensionPixelSize(
+                R.dimen.taskbar_stashed_handle_height);
+        mRegionSamplingHelper = new RegionSamplingHelper(mStashedHandleView,
+                new RegionSamplingHelper.SamplingCallback() {
+                    @Override
+                    public void onRegionDarknessChanged(boolean isRegionDark) {
+                        mStashedHandleView.updateHandleColor(isRegionDark);
+                        mPrefs.edit().putBoolean(SHARED_PREFS_STASHED_HANDLE_REGION_DARK_KEY,
+                                isRegionDark).apply();
+                    }
+
+                    @Override
+                    public Rect getSampledRegion(View sampledView) {
+                        return mStashedHandleView.getSampledRegion();
+                    }
+                }, Executors.UI_HELPER_EXECUTOR);
+    }
+
+    public void init(TaskbarControllers controllers) {
+        mControllers = controllers;
+        mStashedHandleView.getLayoutParams().height = mActivity.getDeviceProfile().taskbarSize;
+
+        updateStashedHandleAlpha();
+        mTaskbarStashedHandleHintScale.updateValue(1f);
+
+        final int stashedTaskbarHeight = mControllers.taskbarStashController.getStashedHeight();
+        mStashedHandleView.setOutlineProvider(new ViewOutlineProvider() {
+            @Override
+            public void getOutline(View view, Outline outline) {
+                final int stashedCenterX = view.getWidth() / 2;
+                final int stashedCenterY = view.getHeight() - stashedTaskbarHeight / 2;
+                mStashedHandleBounds.set(
+                        stashedCenterX - mStashedHandleWidth / 2,
+                        stashedCenterY - mStashedHandleHeight / 2,
+                        stashedCenterX + mStashedHandleWidth / 2,
+                        stashedCenterY + mStashedHandleHeight / 2);
+                mStashedHandleRadius = view.getHeight() / 2f;
+                outline.setRoundRect(mStashedHandleBounds, mStashedHandleRadius);
+            }
+        });
+
+        mStashedHandleView.addOnLayoutChangeListener((view, i, i1, i2, i3, i4, i5, i6, i7) -> {
+            final int stashedCenterX = view.getWidth() / 2;
+            final int stashedCenterY = view.getHeight() - stashedTaskbarHeight / 2;
+
+            view.setPivotX(stashedCenterX);
+            view.setPivotY(stashedCenterY);
+        });
+    }
+
+    public void onDestroy() {
+        mRegionSamplingHelper.stopAndDestroy();
+    }
+
+    public AnimatedFloat getStashedHandleAlpha() {
+        return mTaskbarStashedHandleAlpha;
+    }
+
+    public AnimatedFloat getStashedHandleHintScale() {
+        return mTaskbarStashedHandleHintScale;
+    }
+
+    /**
+     * Creates and returns a {@link RevealOutlineAnimation} Animator that updates the stashed handle
+     * shape and size. When stashed, the shape is a thin rounded pill. When unstashed, the shape
+     * morphs into the size of where the taskbar icons will be.
+     */
+    public @Nullable Animator createRevealAnimToIsStashed(boolean isStashed) {
+        if (mIsAtStashedRevealBounds == isStashed) {
+            return null;
+        }
+        mIsAtStashedRevealBounds = isStashed;
+        final RevealOutlineAnimation handleRevealProvider = new RoundedRectRevealOutlineProvider(
+                mStashedHandleRadius, mStashedHandleRadius,
+                mControllers.taskbarViewController.getIconLayoutBounds(), mStashedHandleBounds);
+        return handleRevealProvider.createRevealAnimator(mStashedHandleView, !isStashed);
+    }
+
+    public void onIsStashed(boolean isStashed) {
+        mRegionSamplingHelper.setWindowVisible(isStashed);
+        if (isStashed) {
+            mStashedHandleView.updateSampledRegion();
+            mRegionSamplingHelper.start(mStashedHandleView.getSampledRegion());
+        } else {
+            mRegionSamplingHelper.stop();
+        }
+    }
+
+    protected void updateStashedHandleAlpha() {
+        mStashedHandleView.setAlpha(mTaskbarStashedHandleAlpha.value);
+    }
+
+    protected void updateStashedHandleHintScale() {
+        mStashedHandleView.setScaleX(mTaskbarStashedHandleHintScale.value);
+        mStashedHandleView.setScaleY(mTaskbarStashedHandleHintScale.value);
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 4ba0ee0..ca574e6 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -17,7 +17,7 @@
 
 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
-import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
+import static android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL;
 
 import static com.android.systemui.shared.system.WindowManagerWrapper.ITYPE_BOTTOM_TAPPABLE_ELEMENT;
 import static com.android.systemui.shared.system.WindowManagerWrapper.ITYPE_EXTRA_NAVIGATION_BAR;
@@ -28,9 +28,7 @@
 import android.content.Intent;
 import android.content.pm.LauncherApps;
 import android.graphics.PixelFormat;
-import android.graphics.Point;
 import android.graphics.Rect;
-import android.graphics.drawable.Drawable;
 import android.os.Process;
 import android.os.SystemProperties;
 import android.util.Log;
@@ -40,31 +38,25 @@
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.WindowManager;
+import android.widget.FrameLayout;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.DragSource;
-import com.android.launcher3.DropTarget;
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.R;
-import com.android.launcher3.dragndrop.DragController;
-import com.android.launcher3.dragndrop.DragOptions;
-import com.android.launcher3.dragndrop.DragView;
-import com.android.launcher3.dragndrop.DraggableView;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.model.data.FolderInfo;
-import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
-import com.android.launcher3.taskbar.TaskbarNavButtonController.TaskbarButton;
+import com.android.launcher3.taskbar.contextual.RotationButtonController;
 import com.android.launcher3.touch.ItemClickHandler;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.TraceHelper;
+import com.android.launcher3.util.ViewCache;
 import com.android.launcher3.views.ActivityContext;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SysUINavigationMode.Mode;
@@ -88,45 +80,56 @@
     private final DeviceProfile mDeviceProfile;
     private final LayoutInflater mLayoutInflater;
     private final TaskbarDragLayer mDragLayer;
-    private final TaskbarIconController mIconController;
-    private final MyDragController mDragController;
+    private final TaskbarControllers mControllers;
 
     private final WindowManager mWindowManager;
     private WindowManager.LayoutParams mWindowLayoutParams;
+    private boolean mIsFullscreen;
+    // The size we should return to when we call setTaskbarWindowFullscreen(false)
+    private int mLastRequestedNonFullscreenHeight;
 
     private final SysUINavigationMode.Mode mNavMode;
-    private final TaskbarNavButtonController mNavButtonController;
+    private final ViewCache mViewCache = new ViewCache();
 
     private final boolean mIsSafeModeEnabled;
-
-    @NonNull
-    private TaskbarUIController mUIController = TaskbarUIController.DEFAULT;
-
-    private final View.OnClickListener mOnTaskbarIconClickListener;
-    private final View.OnLongClickListener mOnTaskbarIconLongClickListener;
+    private boolean mIsDestroyed = false;
 
     public TaskbarActivityContext(Context windowContext, DeviceProfile dp,
             TaskbarNavButtonController buttonController) {
         super(windowContext, Themes.getActivityThemeRes(windowContext));
         mDeviceProfile = dp;
-        mNavButtonController = buttonController;
+
         mNavMode = SysUINavigationMode.getMode(windowContext);
         mIsSafeModeEnabled = TraceHelper.allowIpcs("isSafeMode",
                 () -> getPackageManager().isSafeMode());
 
-        mOnTaskbarIconLongClickListener =
-                new TaskbarDragController(this)::startSystemDragOnLongClick;
-        mOnTaskbarIconClickListener = this::onTaskbarIconClicked;
-
         float taskbarIconSize = getResources().getDimension(R.dimen.taskbar_icon_size);
+        mDeviceProfile.updateIconSize(1, getResources());
         float iconScale = taskbarIconSize / mDeviceProfile.iconSizePx;
         mDeviceProfile.updateIconSize(iconScale, getResources());
 
         mLayoutInflater = LayoutInflater.from(this).cloneInContext(this);
-        mDragLayer = (TaskbarDragLayer) mLayoutInflater
-                .inflate(R.layout.taskbar, null, false);
-        mIconController = new TaskbarIconController(this, mDragLayer);
-        mDragController = new MyDragController(this);
+
+        // Inflate views.
+        mDragLayer = (TaskbarDragLayer) mLayoutInflater.inflate(
+                R.layout.taskbar, null, false);
+        TaskbarView taskbarView = mDragLayer.findViewById(R.id.taskbar_view);
+        FrameLayout navButtonsView = mDragLayer.findViewById(R.id.navbuttons_view);
+        StashedHandleView stashedHandleView = mDragLayer.findViewById(R.id.stashed_handle);
+
+        // Construct controllers.
+        mControllers = new TaskbarControllers(this,
+                new TaskbarDragController(this),
+                buttonController,
+                new NavbarButtonsViewController(this, navButtonsView),
+                new RotationButtonController(this, R.color.popup_color_primary_light,
+                        R.color.popup_color_primary_light),
+                new TaskbarDragLayerController(this, mDragLayer),
+                new TaskbarViewController(this, taskbarView),
+                new TaskbarKeyguardController(this),
+                new StashedHandleViewController(this, stashedHandleView),
+                new TaskbarStashController(this),
+                new TaskbarEduController(this));
 
         Display display = windowContext.getDisplay();
         Context c = display.getDisplayId() == Display.DEFAULT_DISPLAY
@@ -136,10 +139,11 @@
     }
 
     public void init() {
+        mLastRequestedNonFullscreenHeight = mDeviceProfile.taskbarSize;
         mWindowLayoutParams = new WindowManager.LayoutParams(
                 MATCH_PARENT,
-                mDeviceProfile.taskbarSize,
-                TYPE_APPLICATION_OVERLAY,
+                mLastRequestedNonFullscreenHeight,
+                TYPE_NAVIGATION_BAR_PANEL,
                 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                 PixelFormat.TRANSLUCENT);
         mWindowLayoutParams.setTitle(WINDOW_TITLE);
@@ -148,7 +152,6 @@
         mWindowLayoutParams.setFitInsetsTypes(0);
         mWindowLayoutParams.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING;
         mWindowLayoutParams.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
-        mWindowLayoutParams.setSystemApplicationOverlay(true);
 
         WindowManagerWrapper wmWrapper = WindowManagerWrapper.getInstance();
         wmWrapper.setProvidesInsetsTypes(
@@ -156,23 +159,14 @@
                 new int[] { ITYPE_EXTRA_NAVIGATION_BAR, ITYPE_BOTTOM_TAPPABLE_ELEMENT }
         );
 
-        mIconController.init(mOnTaskbarIconClickListener, mOnTaskbarIconLongClickListener);
+        // Initialize controllers after all are constructed.
+        mControllers.init();
+
         mWindowManager.addView(mDragLayer, mWindowLayoutParams);
     }
 
-    /**
-     * Updates the TaskbarContainer height (pass deviceProfile.taskbarSize to reset).
-     */
-    public void setTaskbarWindowHeight(int height) {
-        if (mWindowLayoutParams.height == height) {
-            return;
-        }
-        mWindowLayoutParams.height = height;
-        mWindowManager.updateViewLayout(mDragLayer, mWindowLayoutParams);
-    }
-
-    public boolean canShowNavButtons() {
-        return ENABLE_THREE_BUTTON_TASKBAR && mNavMode == Mode.THREE_BUTTONS;
+    public boolean isThreeButtonNav() {
+        return mNavMode == Mode.THREE_BUTTONS;
     }
 
     @Override
@@ -192,59 +186,88 @@
 
     @Override
     public Rect getFolderBoundingBox() {
-        return mDragLayer.getFolderBoundingBox();
+        return mControllers.taskbarDragLayerController.getFolderBoundingBox();
     }
 
     @Override
-    public DragController getDragController() {
-        return mDragController;
+    public TaskbarDragController getDragController() {
+        return mControllers.taskbarDragController;
+    }
+
+    @Override
+    public ViewCache getViewCache() {
+        return mViewCache;
     }
 
     /**
      * Sets a new data-source for this taskbar instance
      */
     public void setUIController(@NonNull TaskbarUIController uiController) {
-        mUIController.onDestroy();
-        mUIController = uiController;
-        mIconController.setUIController(mUIController);
-        mUIController.onCreate();
+        mControllers.uiController.onDestroy();
+        mControllers.uiController = uiController;
+        mControllers.uiController.init(mControllers);
     }
 
     /**
      * Called when this instance of taskbar is no longer needed
      */
     public void onDestroy() {
+        mIsDestroyed = true;
         setUIController(TaskbarUIController.DEFAULT);
-        mIconController.onDestroy();
+        mControllers.onDestroy();
         mWindowManager.removeViewImmediate(mDragLayer);
     }
 
-    void onNavigationButtonClick(@TaskbarButton int buttonType) {
-        mNavButtonController.onButtonClick(buttonType);
+    public void updateSysuiStateFlags(int systemUiStateFlags, boolean forceUpdate) {
+        mControllers.navbarButtonsViewController.updateStateForSysuiFlags(
+                systemUiStateFlags, forceUpdate);
+        mControllers.taskbarViewController.setImeIsVisible(
+                mControllers.navbarButtonsViewController.isImeVisible());
+        mControllers.taskbarKeyguardController.updateStateForSysuiFlags(systemUiStateFlags);
     }
 
-    /**
-     * Should be called when the IME visibility changes, so we can hide/show Taskbar accordingly.
-     */
-    public void setImeIsVisible(boolean isImeVisible) {
-        mIconController.setImeIsVisible(isImeVisible);
+    public void onRotationProposal(int rotation, boolean isValid) {
+        mControllers.rotationButtonController.onRotationProposal(rotation, isValid);
     }
 
-    /**
-     * When in 3 button nav, the above doesn't get called since we prevent sysui nav bar from
-     * instantiating at all, which is what's responsible for sending sysui state flags over.
-     *
-     * @param vis IME visibility flag
-     */
-    public void updateImeStatus(int displayId, int vis, boolean showImeSwitcher) {
-        mIconController.updateImeStatus(displayId, vis, showImeSwitcher);
+    public void disableNavBarElements(int displayId, int state1, int state2, boolean animate) {
+        if (displayId != getDisplayId()) {
+            return;
+        }
+        mControllers.rotationButtonController.onDisable2FlagChanged(state2);
+    }
+
+    public void onSystemBarAttributesChanged(int displayId, int behavior) {
+        mControllers.rotationButtonController.onBehaviorChanged(displayId, behavior);
     }
 
     /**
      * Updates the TaskbarContainer to MATCH_PARENT vs original Taskbar size.
      */
-    protected void setTaskbarWindowFullscreen(boolean fullscreen) {
-        setTaskbarWindowHeight(fullscreen ? MATCH_PARENT : getDeviceProfile().taskbarSize);
+    public void setTaskbarWindowFullscreen(boolean fullscreen) {
+        mIsFullscreen = fullscreen;
+        setTaskbarWindowHeight(fullscreen ? MATCH_PARENT : mLastRequestedNonFullscreenHeight);
+    }
+
+    /**
+     * Updates the TaskbarContainer height (pass deviceProfile.taskbarSize to reset).
+     */
+    public void setTaskbarWindowHeight(int height) {
+        if (mWindowLayoutParams.height == height || mIsDestroyed) {
+            return;
+        }
+        if (height != MATCH_PARENT) {
+            mLastRequestedNonFullscreenHeight = height;
+            if (mIsFullscreen) {
+                // We still need to be fullscreen, so defer any change to our height until we call
+                // setTaskbarWindowFullscreen(false). For example, this could happen when dragging
+                // from the gesture region, as the drag will cancel the gesture and reset launcher's
+                // state, which in turn normally would reset the taskbar window height as well.
+                return;
+            }
+        }
+        mWindowLayoutParams.height = height;
+        mWindowManager.updateViewLayout(mDragLayer, mWindowLayoutParams);
     }
 
     protected void onTaskbarIconClicked(View view) {
@@ -262,8 +285,8 @@
                 folder.animateOpen();
 
                 folder.iterateOverItems((itemInfo, itemView) -> {
-                    itemView.setOnClickListener(mOnTaskbarIconClickListener);
-                    itemView.setOnLongClickListener(mOnTaskbarIconLongClickListener);
+                    mControllers.taskbarViewController
+                            .setClickAndLongClickListenersForIcon(itemView);
                     // To play haptic when dragging, like other Taskbar items do.
                     itemView.setHapticFeedbackEnabled(true);
                     return false;
@@ -271,7 +294,9 @@
             });
         } else if (tag instanceof WorkspaceItemInfo) {
             WorkspaceItemInfo info = (WorkspaceItemInfo) tag;
-            if (!(info.isDisabled() && ItemClickHandler.handleDisabledItemClicked(info, this))) {
+            if (info.isDisabled()) {
+                ItemClickHandler.handleDisabledItemClicked(info, this);
+            } else {
                 Intent intent = new Intent(info.getIntent())
                         .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                 try {
@@ -308,26 +333,19 @@
         AbstractFloatingView.closeAllOpenViews(this);
     }
 
-    private static class MyDragController extends DragController<TaskbarActivityContext> {
-        MyDragController(TaskbarActivityContext activity) {
-            super(activity);
-        }
+    /**
+     * Called when we detect a long press in the nav region before passing the gesture slop.
+     * @return Whether taskbar handled the long press, and thus should cancel the gesture.
+     */
+    public boolean onLongPressToUnstashTaskbar() {
+        return mControllers.taskbarStashController.onLongPressToUnstashTaskbar();
+    }
 
-        @Override
-        protected DragView startDrag(@Nullable Drawable drawable, @Nullable View view,
-                DraggableView originalView, int dragLayerX, int dragLayerY, DragSource source,
-                ItemInfo dragInfo, Point dragOffset, Rect dragRegion, float initialDragViewScale,
-                float dragViewScaleOnDrop, DragOptions options) {
-            return null;
-        }
-
-        @Override
-        protected void exitDrag() {
-        }
-
-        @Override
-        protected DropTarget getDefaultDropTarget(int[] dropCoordinates) {
-            return null;
-        }
+    /**
+     * Called when we detect a motion down or up/cancel in the nav region while stashed.
+     * @param animateForward Whether to animate towards the unstashed hint state or back to stashed.
+     */
+    public void startTaskbarUnstashHint(boolean animateForward) {
+        mControllers.taskbarStashController.startUnstashHint(animateForward);
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarAnimationController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarAnimationController.java
deleted file mode 100644
index e20ddf8..0000000
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarAnimationController.java
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.taskbar;
-
-import static com.android.launcher3.LauncherState.TASKBAR;
-
-import android.animation.Animator;
-
-import com.android.launcher3.BaseQuickstepLauncher;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.taskbar.LauncherTaskbarUIController.TaskbarAnimationControllerCallbacks;
-import com.android.quickstep.AnimatedFloat;
-import com.android.quickstep.SystemUiProxy;
-import com.android.systemui.shared.system.QuickStepContract;
-
-/**
- * Works with TaskbarController to update the TaskbarView's visual properties based on factors such
- * as LauncherState, whether Launcher is in the foreground, etc.
- */
-public class TaskbarAnimationController {
-
-    private static final long IME_VISIBILITY_ALPHA_DURATION = 120;
-
-    private final BaseQuickstepLauncher mLauncher;
-    private final TaskbarAnimationControllerCallbacks mTaskbarCallbacks;
-
-    // Background alpha.
-    private final AnimatedFloat mTaskbarBackgroundAlpha = new AnimatedFloat(
-            this::onTaskbarBackgroundAlphaChanged);
-
-    // Overall visibility.
-    private final AnimatedFloat mTaskbarVisibilityAlphaForLauncherState = new AnimatedFloat(
-            this::updateVisibilityAlpha);
-    private final AnimatedFloat mTaskbarVisibilityAlphaForIme = new AnimatedFloat(
-            this::updateVisibilityAlphaForIme);
-
-    // Scale.
-    private final AnimatedFloat mTaskbarScaleForLauncherState = new AnimatedFloat(
-            this::updateScale);
-
-    // TranslationY.
-    private final AnimatedFloat mTaskbarTranslationYForLauncherState = new AnimatedFloat(
-            this::updateTranslationY);
-
-    public TaskbarAnimationController(BaseQuickstepLauncher launcher,
-            TaskbarAnimationControllerCallbacks taskbarCallbacks) {
-        mLauncher = launcher;
-        mTaskbarCallbacks = taskbarCallbacks;
-    }
-
-    protected void init() {
-        mTaskbarBackgroundAlpha.updateValue(mLauncher.hasBeenResumed() ? 0f : 1f);
-        boolean isVisibleForLauncherState = (mLauncher.getStateManager().getState()
-                .getVisibleElements(mLauncher) & TASKBAR) != 0;
-        mTaskbarVisibilityAlphaForLauncherState.updateValue(isVisibleForLauncherState ? 1f : 0f);
-        boolean isImeVisible = (SystemUiProxy.INSTANCE.get(mLauncher).getLastSystemUiStateFlags()
-                & QuickStepContract.SYSUI_STATE_IME_SHOWING) != 0;
-        mTaskbarVisibilityAlphaForIme.updateValue(isImeVisible ? 0f : 1f);
-
-        onTaskbarBackgroundAlphaChanged();
-        updateVisibilityAlpha();
-    }
-
-    protected void cleanup() {
-        setNavBarButtonAlpha(1f);
-    }
-
-    protected AnimatedFloat getTaskbarVisibilityForLauncherState() {
-        return mTaskbarVisibilityAlphaForLauncherState;
-    }
-
-    protected AnimatedFloat getTaskbarScaleForLauncherState() {
-        return mTaskbarScaleForLauncherState;
-    }
-
-    protected AnimatedFloat getTaskbarTranslationYForLauncherState() {
-        return mTaskbarTranslationYForLauncherState;
-    }
-
-    protected Animator createAnimToBackgroundAlpha(float toAlpha, long duration) {
-        return mTaskbarBackgroundAlpha.animateToValue(mTaskbarBackgroundAlpha.value, toAlpha)
-                .setDuration(duration);
-    }
-
-    protected void animateToVisibilityForIme(float toAlpha) {
-        mTaskbarVisibilityAlphaForIme.animateToValue(mTaskbarVisibilityAlphaForIme.value, toAlpha)
-                .setDuration(IME_VISIBILITY_ALPHA_DURATION).start();
-    }
-
-    private void onTaskbarBackgroundAlphaChanged() {
-        mTaskbarCallbacks.updateTaskbarBackgroundAlpha(mTaskbarBackgroundAlpha.value);
-        updateVisibilityAlpha();
-        updateScale();
-        updateTranslationY();
-    }
-
-    private void updateVisibilityAlpha() {
-        // We use mTaskbarBackgroundAlpha as a proxy for whether Launcher is resumed/paused, the
-        // assumption being that Taskbar should always be visible regardless of the current
-        // LauncherState if Launcher is paused.
-        float alphaDueToIme = mTaskbarVisibilityAlphaForIme.value;
-        float alphaDueToLauncher = Math.max(mTaskbarBackgroundAlpha.value,
-                mTaskbarVisibilityAlphaForLauncherState.value);
-        float taskbarAlpha = alphaDueToLauncher * alphaDueToIme;
-        mTaskbarCallbacks.updateTaskbarVisibilityAlpha(taskbarAlpha);
-
-        // Make the nav bar invisible if taskbar is visible.
-        setNavBarButtonAlpha(1f - taskbarAlpha);
-    }
-
-    private void updateVisibilityAlphaForIme() {
-        updateVisibilityAlpha();
-        float taskbarAlphaDueToIme = mTaskbarVisibilityAlphaForIme.value;
-        mTaskbarCallbacks.updateImeBarVisibilityAlpha(1f - taskbarAlphaDueToIme);
-    }
-
-    private void updateScale() {
-        // We use mTaskbarBackgroundAlpha as a proxy for whether Launcher is resumed/paused, the
-        // assumption being that Taskbar should always be at scale 1f regardless of the current
-        // LauncherState if Launcher is paused.
-        float scale = mTaskbarScaleForLauncherState.value;
-        scale = Utilities.mapRange(mTaskbarBackgroundAlpha.value, scale, 1f);
-        mTaskbarCallbacks.updateTaskbarScale(scale);
-    }
-
-    private void updateTranslationY() {
-        // We use mTaskbarBackgroundAlpha as a proxy for whether Launcher is resumed/paused, the
-        // assumption being that Taskbar should always be at translationY 0f regardless of the
-        // current LauncherState if Launcher is paused.
-        float translationY = mTaskbarTranslationYForLauncherState.value;
-        translationY = Utilities.mapRange(mTaskbarBackgroundAlpha.value, translationY, 0f);
-        mTaskbarCallbacks.updateTaskbarTranslationY(translationY);
-    }
-
-    private void setNavBarButtonAlpha(float navBarAlpha) {
-        SystemUiProxy.INSTANCE.get(mLauncher).setNavBarButtonAlpha(navBarAlpha, false);
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
new file mode 100644
index 0000000..b32a41e
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import androidx.annotation.NonNull;
+
+import com.android.launcher3.taskbar.contextual.RotationButtonController;
+
+/**
+ * Hosts various taskbar controllers to facilitate passing between one another.
+ */
+public class TaskbarControllers {
+
+    public final TaskbarActivityContext taskbarActivityContext;
+    public final TaskbarDragController taskbarDragController;
+    public final TaskbarNavButtonController navButtonController;
+    public final NavbarButtonsViewController navbarButtonsViewController;
+    public final RotationButtonController rotationButtonController;
+    public final TaskbarDragLayerController taskbarDragLayerController;
+    public final TaskbarViewController taskbarViewController;
+    public final TaskbarKeyguardController taskbarKeyguardController;
+    public final StashedHandleViewController stashedHandleViewController;
+    public final TaskbarStashController taskbarStashController;
+    public final TaskbarEduController taskbarEduController;
+
+    /** Do not store this controller, as it may change at runtime. */
+    @NonNull public TaskbarUIController uiController = TaskbarUIController.DEFAULT;
+
+    public TaskbarControllers(TaskbarActivityContext taskbarActivityContext,
+            TaskbarDragController taskbarDragController,
+            TaskbarNavButtonController navButtonController,
+            NavbarButtonsViewController navbarButtonsViewController,
+            RotationButtonController rotationButtonController,
+            TaskbarDragLayerController taskbarDragLayerController,
+            TaskbarViewController taskbarViewController,
+            TaskbarKeyguardController taskbarKeyguardController,
+            StashedHandleViewController stashedHandleViewController,
+            TaskbarStashController taskbarStashController,
+            TaskbarEduController taskbarEduController) {
+        this.taskbarActivityContext = taskbarActivityContext;
+        this.taskbarDragController = taskbarDragController;
+        this.navButtonController = navButtonController;
+        this.navbarButtonsViewController = navbarButtonsViewController;
+        this.rotationButtonController = rotationButtonController;
+        this.taskbarDragLayerController = taskbarDragLayerController;
+        this.taskbarViewController = taskbarViewController;
+        this.taskbarKeyguardController = taskbarKeyguardController;
+        this.stashedHandleViewController = stashedHandleViewController;
+        this.taskbarStashController = taskbarStashController;
+        this.taskbarEduController = taskbarEduController;
+    }
+
+    /**
+     * Initializes all controllers. Note that controllers can now reference each other through this
+     * TaskbarControllers instance, but should be careful to only access things that were created
+     * in constructors for now, as some controllers may still be waiting for init().
+     */
+    public void init() {
+        navbarButtonsViewController.init(this);
+        if (taskbarActivityContext.isThreeButtonNav()) {
+            rotationButtonController.init();
+        }
+        taskbarDragLayerController.init(this);
+        taskbarViewController.init(this);
+        taskbarKeyguardController.init(navbarButtonsViewController);
+        stashedHandleViewController.init(this);
+        taskbarStashController.init(this);
+    }
+
+    /**
+     * Cleans up all controllers.
+     */
+    public void onDestroy() {
+        uiController.onDestroy();
+        rotationButtonController.onDestroy();
+        taskbarDragLayerController.onDestroy();
+        taskbarKeyguardController.onDestroy();
+        taskbarViewController.onDestroy();
+        stashedHandleViewController.onDestroy();
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragController.java
index ee44927..b89032e 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragController.java
@@ -20,19 +20,35 @@
 
 import android.content.ClipData;
 import android.content.ClipDescription;
-import android.content.Context;
 import android.content.Intent;
 import android.content.pm.LauncherApps;
 import android.content.res.Resources;
 import android.graphics.Canvas;
 import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
 import android.os.UserHandle;
 import android.view.DragEvent;
+import android.view.MotionEvent;
 import android.view.View;
 
+import androidx.annotation.Nullable;
+
+import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.DragSource;
+import com.android.launcher3.DropTarget;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.R;
+import com.android.launcher3.accessibility.DragViewStateAnnouncer;
+import com.android.launcher3.dragndrop.DragController;
+import com.android.launcher3.dragndrop.DragDriver;
+import com.android.launcher3.dragndrop.DragOptions;
+import com.android.launcher3.dragndrop.DragView;
+import com.android.launcher3.dragndrop.DraggableView;
+import com.android.launcher3.graphics.DragPreviewProvider;
+import com.android.launcher3.icons.FastBitmapDrawable;
+import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.system.ClipDescriptionCompat;
@@ -41,14 +57,20 @@
 /**
  * Handles long click on Taskbar items to start a system drag and drop operation.
  */
-public class TaskbarDragController {
+public class TaskbarDragController extends DragController<TaskbarActivityContext>  {
 
-    private final Context mContext;
     private final int mDragIconSize;
+    private final int[] mTempXY = new int[2];
 
-    public TaskbarDragController(Context context) {
-        mContext = context;
-        Resources resources = mContext.getResources();
+    // Where the initial touch was relative to the dragged icon.
+    private int mRegistrationX;
+    private int mRegistrationY;
+
+    private boolean mIsSystemDragInProgress;
+
+    public TaskbarDragController(TaskbarActivityContext activity) {
+        super(activity);
+        Resources resources = mActivity.getResources();
         mDragIconSize = resources.getDimensionPixelSize(R.dimen.taskbar_icon_drag_icon_size);
     }
 
@@ -57,18 +79,165 @@
      * generate the ClipDescription and Intent.
      * @return Whether {@link View#startDragAndDrop} started successfully.
      */
-    protected boolean startSystemDragOnLongClick(View view) {
+    protected boolean startDragOnLongClick(View view) {
         if (!(view instanceof BubbleTextView)) {
             return false;
         }
 
         BubbleTextView btv = (BubbleTextView) view;
-        View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view) {
+
+        mActivity.setTaskbarWindowFullscreen(true);
+        view.post(() -> {
+            startInternalDrag(btv);
+            btv.setVisibility(INVISIBLE);
+        });
+        return true;
+    }
+
+    private void startInternalDrag(BubbleTextView btv) {
+        float iconScale = 1f;
+        Drawable icon = btv.getIcon();
+        if (icon instanceof FastBitmapDrawable) {
+            iconScale = ((FastBitmapDrawable) icon).getAnimatedScale();
+        }
+
+        // Clear the pressed state if necessary
+        btv.clearFocus();
+        btv.setPressed(false);
+        btv.clearPressedBackground();
+
+        final DragPreviewProvider previewProvider = new DragPreviewProvider(btv);
+        final Drawable drawable = previewProvider.createDrawable();
+        final float scale = previewProvider.getScaleAndPosition(drawable, mTempXY);
+        int dragLayerX = mTempXY[0];
+        int dragLayerY = mTempXY[1];
+
+        Rect dragRect = new Rect();
+        btv.getSourceVisualDragBounds(dragRect);
+        dragLayerY += dragRect.top;
+
+        DragOptions dragOptions = new DragOptions();
+        dragOptions.preDragCondition = new DragOptions.PreDragCondition() {
+            private DragView mDragView;
+
+            @Override
+            public boolean shouldStartDrag(double distanceDragged) {
+                return mDragView != null && mDragView.isAnimationFinished();
+            }
+
+            @Override
+            public void onPreDragStart(DropTarget.DragObject dragObject) {
+                mDragView = dragObject.dragView;
+            }
+
+            @Override
+            public void onPreDragEnd(DropTarget.DragObject dragObject, boolean dragStarted) {
+                mDragView = null;
+            }
+        };
+        // TODO: open popup/pre-drag
+        // PopupContainerWithArrow popupContainer = PopupContainerWithArrow.showForIcon(view);
+        // if (popupContainer != null) {
+        //     dragOptions.preDragCondition = popupContainer.createPreDragCondition();
+        // }
+
+        startDrag(
+                drawable,
+                /* view = */ null,
+                /* originalView = */ btv,
+                dragLayerX,
+                dragLayerY,
+                (View target, DropTarget.DragObject d, boolean success) -> {} /* DragSource */,
+                (WorkspaceItemInfo) btv.getTag(),
+                /* dragVisualizeOffset = */ null,
+                dragRect,
+                scale * iconScale,
+                scale,
+                dragOptions);
+    }
+
+    @Override
+    protected DragView startDrag(@Nullable Drawable drawable, @Nullable View view,
+            DraggableView originalView, int dragLayerX, int dragLayerY, DragSource source,
+            ItemInfo dragInfo, Point dragOffset, Rect dragRegion, float initialDragViewScale,
+            float dragViewScaleOnDrop, DragOptions options) {
+        mOptions = options;
+
+        mRegistrationX = mMotionDown.x - dragLayerX;
+        mRegistrationY = mMotionDown.y - dragLayerY;
+
+        final int dragRegionLeft = dragRegion == null ? 0 : dragRegion.left;
+        final int dragRegionTop = dragRegion == null ? 0 : dragRegion.top;
+
+        mLastDropTarget = null;
+
+        mDragObject = new DropTarget.DragObject(mActivity.getApplicationContext());
+        mDragObject.originalView = originalView;
+        mDragObject.deferDragViewCleanupPostAnimation = false;
+
+        mIsInPreDrag = mOptions.preDragCondition != null
+                && !mOptions.preDragCondition.shouldStartDrag(0);
+
+        float scalePx = mDragIconSize - dragRegion.width();
+        final DragView dragView = mDragObject.dragView = new TaskbarDragView(
+                mActivity,
+                drawable,
+                mRegistrationX,
+                mRegistrationY,
+                initialDragViewScale,
+                dragViewScaleOnDrop,
+                scalePx);
+        dragView.setItemInfo(dragInfo);
+        mDragObject.dragComplete = false;
+
+        mDragObject.xOffset = mMotionDown.x - (dragLayerX + dragRegionLeft);
+        mDragObject.yOffset = mMotionDown.y - (dragLayerY + dragRegionTop);
+
+        mDragDriver = DragDriver.create(this, mOptions, /* secondaryEventConsumer = */ ev -> {});
+        if (!mOptions.isAccessibleDrag) {
+            mDragObject.stateAnnouncer = DragViewStateAnnouncer.createFor(dragView);
+        }
+
+        mDragObject.dragSource = source;
+        mDragObject.dragInfo = dragInfo;
+        mDragObject.originalDragInfo = mDragObject.dragInfo.makeShallowCopy();
+
+        if (dragRegion != null) {
+            dragView.setDragRegion(new Rect(dragRegion));
+        }
+
+        dragView.show(mLastTouch.x, mLastTouch.y);
+        mDistanceSinceScroll = 0;
+
+        if (!mIsInPreDrag) {
+            callOnDragStart();
+        } else if (mOptions.preDragCondition != null) {
+            mOptions.preDragCondition.onPreDragStart(mDragObject);
+        }
+
+        handleMoveEvent(mLastTouch.x, mLastTouch.y);
+
+        return dragView;
+    }
+
+    @Override
+    protected void callOnDragStart() {
+        super.callOnDragStart();
+        // Pre-drag has ended, start the global system drag.
+        AbstractFloatingView.closeAllOpenViews(mActivity);
+        startSystemDrag((BubbleTextView) mDragObject.originalView);
+    }
+
+    private void startSystemDrag(BubbleTextView btv) {
+        View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(btv) {
+
             @Override
             public void onProvideShadowMetrics(Point shadowSize, Point shadowTouchPoint) {
                 shadowSize.set(mDragIconSize, mDragIconSize);
-                // TODO: should be based on last touch point on the icon.
-                shadowTouchPoint.set(shadowSize.x / 2, shadowSize.y / 2);
+                // The registration point was taken before the icon scaled to mDragIconSize, so
+                // offset the registration to where the touch is on the new size.
+                int offset = (mDragIconSize - btv.getIconSize()) / 2;
+                shadowTouchPoint.set(mRegistrationX + offset, mRegistrationY + offset);
             }
 
             @Override
@@ -81,12 +250,12 @@
             }
         };
 
-        Object tag = view.getTag();
+        Object tag = btv.getTag();
         ClipDescription clipDescription = null;
         Intent intent = null;
         if (tag instanceof WorkspaceItemInfo) {
             WorkspaceItemInfo item = (WorkspaceItemInfo) tag;
-            LauncherApps launcherApps = mContext.getSystemService(LauncherApps.class);
+            LauncherApps launcherApps = mActivity.getSystemService(LauncherApps.class);
             clipDescription = new ClipDescription(item.title,
                     new String[] {
                             item.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT
@@ -116,28 +285,82 @@
 
         if (clipDescription != null && intent != null) {
             ClipData clipData = new ClipData(clipDescription, new ClipData.Item(intent));
-            view.setOnDragListener(getDraggedViewDragListener());
-            return view.startDragAndDrop(clipData, shadowBuilder, null /* localState */,
-                    View.DRAG_FLAG_GLOBAL | View.DRAG_FLAG_OPAQUE);
+            if (btv.startDragAndDrop(clipData, shadowBuilder, null /* localState */,
+                    View.DRAG_FLAG_GLOBAL | View.DRAG_FLAG_OPAQUE)) {
+                onSystemDragStarted();
+            }
         }
-        return false;
     }
 
-    /**
-     * Hide the original Taskbar item while it is being dragged.
-     */
-    private View.OnDragListener getDraggedViewDragListener() {
-        return (view, dragEvent) -> {
+    private void onSystemDragStarted() {
+        mIsSystemDragInProgress = true;
+        mActivity.getDragLayer().setOnDragListener((view, dragEvent) -> {
             switch (dragEvent.getAction()) {
                 case DragEvent.ACTION_DRAG_STARTED:
-                    view.setVisibility(INVISIBLE);
+                    // Return true to tell system we are interested in events, so we get DRAG_ENDED.
                     return true;
                 case DragEvent.ACTION_DRAG_ENDED:
-                    view.setVisibility(VISIBLE);
-                    view.setOnDragListener(null);
+                    mIsSystemDragInProgress = false;
+                    maybeOnDragEnd();
                     return true;
             }
             return false;
-        };
+        });
+    }
+
+    @Override
+    public boolean isDragging() {
+        return super.isDragging() || mIsSystemDragInProgress;
+    }
+
+    private void maybeOnDragEnd() {
+        if (!isDragging()) {
+            ((View) mDragObject.originalView).setVisibility(VISIBLE);
+        }
+    }
+
+    @Override
+    protected void callOnDragEnd() {
+        super.callOnDragEnd();
+        maybeOnDragEnd();
+    }
+
+    @Override
+    protected float getX(MotionEvent ev) {
+        // We will resize to fill the screen while dragging, so use screen coordinates. This ensures
+        // we start at the correct position even though touch down is on the smaller DragLayer size.
+        return ev.getRawX();
+    }
+
+    @Override
+    protected float getY(MotionEvent ev) {
+        // We will resize to fill the screen while dragging, so use screen coordinates. This ensures
+        // we start at the correct position even though touch down is on the smaller DragLayer size.
+        return ev.getRawY();
+    }
+
+    @Override
+    protected Point getClampedDragLayerPos(float x, float y) {
+        // No need to clamp, as we will take up the entire screen.
+        mTmpPoint.set(Math.round(x), Math.round(y));
+        return mTmpPoint;
+    }
+
+    @Override
+    protected void exitDrag() {
+        if (mDragObject != null) {
+            mActivity.getDragLayer().removeView(mDragObject.dragView);
+        }
+    }
+
+    @Override
+    public void addDropTarget(DropTarget target) {
+        // No-op as Taskbar currently doesn't support any drop targets internally.
+        // Note: if we do add internal DropTargets, we'll still need to ignore Folder.
+    }
+
+    @Override
+    protected DropTarget getDefaultDropTarget(int[] dropCoordinates) {
+        return null;
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayer.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayer.java
index 45ec911..cd1baf7 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayer.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayer.java
@@ -18,14 +18,16 @@
 import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Paint;
-import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.view.MotionEvent;
 import android.view.View;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.R;
+import com.android.launcher3.testing.TestLogging;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.TouchController;
 import com.android.launcher3.views.BaseDragLayer;
 import com.android.systemui.shared.system.ViewTreeObserverWrapper;
@@ -37,14 +39,13 @@
  */
 public class TaskbarDragLayer extends BaseDragLayer<TaskbarActivityContext> {
 
-    private final int mFolderMargin;
     private final Paint mTaskbarBackgroundPaint;
-
-    private TaskbarIconController.Callbacks mControllerCallbacks;
-    private TaskbarView mTaskbarView;
-
     private final OnComputeInsetsListener mTaskbarInsetsComputer = this::onComputeTaskbarInsets;
 
+    private TaskbarDragLayerController.TaskbarDragLayerCallbacks mControllerCallbacks;
+
+    private float mTaskbarBackgroundOffset;
+
     public TaskbarDragLayer(@NonNull Context context) {
         this(context, null);
     }
@@ -61,25 +62,25 @@
     public TaskbarDragLayer(@NonNull Context context, @Nullable AttributeSet attrs,
             int defStyleAttr, int defStyleRes) {
         super(context, attrs, 1 /* alphaChannelCount */);
-        mFolderMargin = getResources().getDimensionPixelSize(R.dimen.taskbar_folder_margin);
         mTaskbarBackgroundPaint = new Paint();
         mTaskbarBackgroundPaint.setColor(getResources().getColor(R.color.taskbar_background));
+        mTaskbarBackgroundPaint.setAlpha(0);
+    }
+
+    public void init(TaskbarDragLayerController.TaskbarDragLayerCallbacks callbacks) {
+        mControllerCallbacks = callbacks;
         recreateControllers();
     }
 
     @Override
     public void recreateControllers() {
-        mControllers = new TouchController[0];
-    }
-
-    public void init(TaskbarIconController.Callbacks callbacks, TaskbarView taskbarView) {
-        mControllerCallbacks = callbacks;
-        mTaskbarView = taskbarView;
+        mControllers = new TouchController[] {mActivity.getDragController()};
     }
 
     private void onComputeTaskbarInsets(InsetsInfo insetsInfo) {
         if (mControllerCallbacks != null) {
             mControllerCallbacks.updateInsetsTouchability(insetsInfo);
+            mControllerCallbacks.updateContentInsets(insetsInfo.contentInsets);
         }
     }
 
@@ -108,12 +109,6 @@
         return true;
     }
 
-    public void updateImeBarVisibilityAlpha(float alpha) {
-        if (mControllerCallbacks != null) {
-            mControllerCallbacks.updateImeBarVisibilityAlpha(alpha);
-        }
-    }
-
     @Override
     public void onViewRemoved(View child) {
         super.onViewRemoved(child);
@@ -124,22 +119,14 @@
 
     @Override
     protected void dispatchDraw(Canvas canvas) {
-        canvas.drawRect(0, canvas.getHeight() - mTaskbarView.getHeight(), canvas.getWidth(),
+        float backgroundHeight = mControllerCallbacks.getTaskbarBackgroundHeight()
+                * (1f - mTaskbarBackgroundOffset);
+        canvas.drawRect(0, canvas.getHeight() - backgroundHeight, canvas.getWidth(),
                 canvas.getHeight(), mTaskbarBackgroundPaint);
         super.dispatchDraw(canvas);
     }
 
     /**
-     * @return Bounds (in our coordinates) where an opened Folder can display.
-     */
-    protected Rect getFolderBoundingBox() {
-        Rect boundingBox = new Rect(0, 0, getWidth(), getHeight() - mTaskbarView.getHeight());
-        boundingBox.inset(mFolderMargin, mFolderMargin);
-        return boundingBox;
-    }
-
-
-    /**
      * Sets the alpha of the background color behind all the Taskbar contents.
      * @param alpha 0 is fully transparent, 1 is fully opaque.
      */
@@ -147,4 +134,19 @@
         mTaskbarBackgroundPaint.setAlpha((int) (alpha * 255));
         invalidate();
     }
+
+    /**
+     * Sets the translation of the background color behind all the Taskbar contents.
+     * @param offset 0 is fully onscreen, 1 is fully offscreen.
+     */
+    protected void setTaskbarBackgroundOffset(float offset) {
+        mTaskbarBackgroundOffset = offset;
+        invalidate();
+    }
+
+    @Override
+    public boolean dispatchTouchEvent(MotionEvent ev) {
+        TestLogging.recordMotionEvent(TestProtocol.SEQUENCE_MAIN, "Touch event", ev);
+        return super.dispatchTouchEvent(ev);
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java
new file mode 100644
index 0000000..14150b9
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import static com.android.launcher3.AbstractFloatingView.TYPE_ALL;
+import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_FRAME;
+import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_REGION;
+
+import android.content.res.Resources;
+import android.graphics.Rect;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.R;
+import com.android.launcher3.anim.AlphaUpdateListener;
+import com.android.quickstep.AnimatedFloat;
+import com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo;
+
+/**
+ * Handles properties/data collection, then passes the results to TaskbarDragLayer to render.
+ */
+public class TaskbarDragLayerController {
+
+    private final TaskbarActivityContext mActivity;
+    private final TaskbarDragLayer mTaskbarDragLayer;
+    private final int mFolderMargin;
+
+    // Alpha properties for taskbar background.
+    private final AnimatedFloat mBgTaskbar = new AnimatedFloat(this::updateBackgroundAlpha);
+    private final AnimatedFloat mBgNavbar = new AnimatedFloat(this::updateBackgroundAlpha);
+    private final AnimatedFloat mKeyguardBgTaskbar = new AnimatedFloat(this::updateBackgroundAlpha);
+    // Used to hide our background color when someone else (e.g. ScrimView) is handling it.
+    private final AnimatedFloat mBgOverride = new AnimatedFloat(this::updateBackgroundAlpha);
+
+    // Translation property for taskbar background.
+    private final AnimatedFloat mBgOffset = new AnimatedFloat(this::updateBackgroundOffset);
+
+    // Initialized in init.
+    private TaskbarControllers mControllers;
+
+    public TaskbarDragLayerController(TaskbarActivityContext activity,
+            TaskbarDragLayer taskbarDragLayer) {
+        mActivity = activity;
+        mTaskbarDragLayer = taskbarDragLayer;
+        final Resources resources = mTaskbarDragLayer.getResources();
+        mFolderMargin = resources.getDimensionPixelSize(R.dimen.taskbar_folder_margin);
+    }
+
+    public void init(TaskbarControllers controllers) {
+        mControllers = controllers;
+        mTaskbarDragLayer.init(new TaskbarDragLayerCallbacks());
+        mKeyguardBgTaskbar.value = 1;
+        mBgOverride.value = 1;
+    }
+
+    public void onDestroy() {
+        mTaskbarDragLayer.onDestroy();
+    }
+
+    /**
+     * @return Bounds (in TaskbarDragLayer coordinates) where an opened Folder can display.
+     */
+    public Rect getFolderBoundingBox() {
+        Rect boundingBox = new Rect(0, 0, mTaskbarDragLayer.getWidth(),
+                mTaskbarDragLayer.getHeight() - mActivity.getDeviceProfile().taskbarSize);
+        boundingBox.inset(mFolderMargin, mFolderMargin);
+        return boundingBox;
+    }
+
+    public AnimatedFloat getTaskbarBackgroundAlpha() {
+        return mBgTaskbar;
+    }
+
+    public AnimatedFloat getNavbarBackgroundAlpha() {
+        return mBgNavbar;
+    }
+
+    public AnimatedFloat getKeyguardBgTaskbar() {
+        return mKeyguardBgTaskbar;
+    }
+
+    public AnimatedFloat getOverrideBackgroundAlpha() {
+        return mBgOverride;
+    }
+
+    public AnimatedFloat getTaskbarBackgroundOffset() {
+        return mBgOffset;
+    }
+
+    private void updateBackgroundAlpha() {
+        final float bgNavbar = mBgNavbar.value;
+        final float bgTaskbar = mBgTaskbar.value * mKeyguardBgTaskbar.value;
+        mTaskbarDragLayer.setTaskbarBackgroundAlpha(
+                mBgOverride.value * Math.max(bgNavbar, bgTaskbar)
+        );
+    }
+
+    private void updateBackgroundOffset() {
+        mTaskbarDragLayer.setTaskbarBackgroundOffset(mBgOffset.value);
+    }
+
+    /**
+     * Callbacks for {@link TaskbarDragLayer} to interact with its controller.
+     */
+    public class TaskbarDragLayerCallbacks {
+
+        /**
+         * Called to update the touchable insets.
+         * @see InsetsInfo#setTouchableInsets(int)
+         */
+        public void updateInsetsTouchability(InsetsInfo insetsInfo) {
+            insetsInfo.touchableRegion.setEmpty();
+            if (mActivity.isThreeButtonNav()) {
+                // Always have nav buttons be touchable
+                mControllers.navbarButtonsViewController.addVisibleButtonsRegion(
+                        mTaskbarDragLayer, insetsInfo.touchableRegion);
+            }
+
+            if (mTaskbarDragLayer.getAlpha() < AlphaUpdateListener.ALPHA_CUTOFF_THRESHOLD) {
+                // Let touches pass through us.
+                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
+            } else if (mControllers.navbarButtonsViewController.isImeVisible()) {
+                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_FRAME);
+            } else if (!mControllers.uiController.isTaskbarTouchable()) {
+                // Let touches pass through us.
+                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
+            } else if (mControllers.taskbarViewController.areIconsVisible()) {
+                // Buttons are visible, take over the full taskbar area
+                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_FRAME);
+            } else {
+                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
+            }
+        }
+
+        /**
+         * Called to update the {@link InsetsInfo#contentInsets}.
+         */
+        public void updateContentInsets(Rect outContentInsets) {
+            mControllers.uiController.updateContentInsets(outContentInsets);
+        }
+
+        /**
+         * Called when a child is removed from TaskbarDragLayer.
+         */
+        public void onDragLayerViewRemoved() {
+            if (AbstractFloatingView.getOpenView(mActivity, TYPE_ALL) == null) {
+                mActivity.setTaskbarWindowFullscreen(false);
+            }
+        }
+
+        /**
+         * Returns how tall the background should be drawn at the bottom of the screen.
+         */
+        public int getTaskbarBackgroundHeight() {
+            return mActivity.getDeviceProfile().taskbarSize;
+        }
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragView.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragView.java
new file mode 100644
index 0000000..cf28eff
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragView.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import android.graphics.drawable.Drawable;
+
+import com.android.launcher3.R;
+import com.android.launcher3.dragndrop.DragView;
+
+/**
+ * A DragView drawn/used by the Taskbar. Note that this is only for the internal drag-and-drop,
+ * while the pre-drag is still in progress (i.e. when the long press popup is still open). After
+ * that ends, we switch to a system drag and drop view instead.
+ */
+public class TaskbarDragView extends DragView<TaskbarActivityContext> {
+    public TaskbarDragView(TaskbarActivityContext launcher, Drawable drawable, int registrationX,
+            int registrationY, float initialScale, float scaleOnDrop, float finalScaleDps) {
+        super(launcher, drawable, registrationX, registrationY, initialScale, scaleOnDrop,
+                finalScaleDps);
+    }
+
+    @Override
+    public void animateTo(int toTouchX, int toTouchY, Runnable onCompleteRunnable, int duration) {
+        Runnable onAnimationEnd = () -> {
+            if (onCompleteRunnable != null) {
+                onCompleteRunnable.run();
+            }
+            mActivity.getDragLayer().removeView(this);
+        };
+
+        duration = Math.max(duration,
+                getResources().getInteger(R.integer.config_dropAnimMinDuration));
+
+        animate()
+                .translationX(toTouchX - mRegistrationX)
+                .translationY(toTouchY - mRegistrationY)
+                .scaleX(mScaleOnDrop)
+                .scaleY(mScaleOnDrop)
+                .withEndAction(onAnimationEnd)
+                .setDuration(duration)
+                .start();
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java
new file mode 100644
index 0000000..c5a0fc1
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import com.android.launcher3.R;
+
+/** Handles the Taskbar Education flow. */
+public class TaskbarEduController {
+
+    private final TaskbarActivityContext mActivity;
+    private TaskbarEduView mTaskbarEduView;
+
+    public TaskbarEduController(TaskbarActivityContext activity) {
+        mActivity = activity;
+    }
+
+    void showEdu() {
+        mActivity.setTaskbarWindowFullscreen(true);
+        mActivity.getDragLayer().post(() -> {
+            mTaskbarEduView = (TaskbarEduView) mActivity.getLayoutInflater().inflate(
+                    R.layout.taskbar_edu, mActivity.getDragLayer(), false);
+            mTaskbarEduView.addOnCloseListener(() -> {
+                mTaskbarEduView = null;
+            });
+            mTaskbarEduView.show();
+        });
+    }
+
+    void hideEdu() {
+        if (mTaskbarEduView != null) {
+            mTaskbarEduView.close(true /* animate */);
+        }
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java
new file mode 100644
index 0000000..b5dab7e
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
+
+import android.animation.PropertyValuesHolder;
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+
+import com.android.launcher3.Insettable;
+import com.android.launcher3.R;
+import com.android.launcher3.views.AbstractSlideInView;
+
+/** Education view about the Taskbar. */
+public class TaskbarEduView extends AbstractSlideInView<TaskbarActivityContext>
+        implements Insettable {
+
+    private static final int DEFAULT_CLOSE_DURATION = 200;
+
+    private final Rect mInsets = new Rect();
+
+    public TaskbarEduView(Context context, AttributeSet attr) {
+        this(context, attr, 0);
+    }
+
+    public TaskbarEduView(Context context, AttributeSet attrs,
+            int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    protected void handleClose(boolean animate) {
+        handleClose(animate, DEFAULT_CLOSE_DURATION);
+    }
+
+    @Override
+    protected boolean isOfType(int type) {
+        return (type & TYPE_TASKBAR_EDUCATION_DIALOG) != 0;
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mContent = findViewById(R.id.edu_view);
+        findViewById(R.id.edu_close_button).setOnClickListener(v -> close(true /* animate */));
+    }
+
+    @Override
+    public void setInsets(Rect insets) {
+        mInsets.set(insets);
+        mContent.setPadding(mContent.getPaddingStart(),
+                mContent.getPaddingTop(), mContent.getPaddingEnd(), insets.bottom);
+    }
+
+    @Override
+    protected void attachToContainer() {
+        if (mColorScrim != null) {
+            getPopupContainer().addView(mColorScrim, 0);
+        }
+        getPopupContainer().addView(this, 1);
+    }
+
+    /** Show the Education flow. */
+    public void show() {
+        attachToContainer();
+        animateOpen();
+    }
+
+    @Override
+    protected int getScrimColor(Context context) {
+        return context.getResources().getColor(R.color.widgets_picker_scrim);
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+        int width = r - l;
+        int height = b - t;
+
+        // Lay out the content as center bottom aligned.
+        int contentWidth = mContent.getMeasuredWidth();
+        int contentLeft = (width - contentWidth - mInsets.left - mInsets.right) / 2 + mInsets.left;
+        mContent.layout(contentLeft, height - mContent.getMeasuredHeight(),
+                contentLeft + contentWidth, height);
+
+        setTranslationShift(mTranslationShift);
+    }
+
+    private void animateOpen() {
+        if (mIsOpen || mOpenCloseAnimator.isRunning()) {
+            return;
+        }
+        mIsOpen = true;
+        mOpenCloseAnimator.setValues(
+                PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
+        mOpenCloseAnimator.setInterpolator(FAST_OUT_SLOW_IN);
+        mOpenCloseAnimator.start();
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarHotseatController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarHotseatController.java
deleted file mode 100644
index 91cf7ef..0000000
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarHotseatController.java
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.taskbar;
-
-import android.view.View;
-
-import com.android.launcher3.BaseQuickstepLauncher;
-import com.android.launcher3.CellLayout;
-import com.android.launcher3.DropTarget;
-import com.android.launcher3.Hotseat;
-import com.android.launcher3.ShortcutAndWidgetContainer;
-import com.android.launcher3.dragndrop.DragController;
-import com.android.launcher3.dragndrop.DragOptions;
-import com.android.launcher3.model.data.ItemInfo;
-
-import java.util.function.Consumer;
-
-/**
- * Works with TaskbarController to update the TaskbarView's Hotseat items.
- */
-public class TaskbarHotseatController {
-
-    private final BaseQuickstepLauncher mLauncher;
-    private final Hotseat mHotseat;
-    private final Consumer<ItemInfo[]> mTaskbarCallbacks;
-    private final int mNumHotseatIcons;
-
-    private final DragController.DragListener mDragListener = new DragController.DragListener() {
-        @Override
-        public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) { }
-
-        @Override
-        public void onDragEnd() {
-            onHotseatUpdated();
-        }
-    };
-
-    public TaskbarHotseatController(
-            BaseQuickstepLauncher launcher, Consumer<ItemInfo[]> taskbarCallbacks) {
-        mLauncher = launcher;
-        mHotseat = mLauncher.getHotseat();
-        mTaskbarCallbacks = taskbarCallbacks;
-        mNumHotseatIcons = mLauncher.getDeviceProfile().numShownHotseatIcons;
-    }
-
-    protected void init() {
-        mLauncher.getDragController().addDragListener(mDragListener);
-        onHotseatUpdated();
-    }
-
-    protected void cleanup() {
-        mLauncher.getDragController().removeDragListener(mDragListener);
-    }
-
-    /**
-     * Called when any Hotseat item changes, and reports the new list of items to TaskbarController.
-     */
-    protected void onHotseatUpdated() {
-        ShortcutAndWidgetContainer shortcutsAndWidgets = mHotseat.getShortcutsAndWidgets();
-        ItemInfo[] hotseatItemInfos = new ItemInfo[mNumHotseatIcons];
-        for (int i = 0; i < shortcutsAndWidgets.getChildCount(); i++) {
-            View child = shortcutsAndWidgets.getChildAt(i);
-            Object tag = shortcutsAndWidgets.getChildAt(i).getTag();
-            if (tag instanceof ItemInfo) {
-                ItemInfo itemInfo = (ItemInfo) tag;
-                CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
-                // Since the hotseat might be laid out vertically or horizontally, use whichever
-                // index is higher.
-                int index = Math.max(lp.cellX, lp.cellY);
-                if (0 <= index && index < hotseatItemInfos.length) {
-                    hotseatItemInfos[index] = itemInfo;
-                }
-            }
-        }
-
-        mTaskbarCallbacks.accept(hotseatItemInfos);
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarIconController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarIconController.java
deleted file mode 100644
index 683a5b9..0000000
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarIconController.java
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.taskbar;
-
-import static android.view.View.GONE;
-import static android.view.View.VISIBLE;
-
-import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_FRAME;
-import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_REGION;
-
-import android.graphics.Rect;
-import android.inputmethodservice.InputMethodService;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.view.View.OnLongClickListener;
-
-import androidx.annotation.NonNull;
-
-import com.android.launcher3.R;
-import com.android.launcher3.anim.AlphaUpdateListener;
-import com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo;
-
-/**
- * Controller for taskbar icon UI
- */
-public class TaskbarIconController {
-
-    private final Rect mTempRect = new Rect();
-
-    private final TaskbarActivityContext mActivity;
-    private final TaskbarDragLayer mDragLayer;
-
-    private final TaskbarView mTaskbarView;
-    private final ImeBarView mImeBarView;
-
-    @NonNull
-    private TaskbarUIController mUIController = TaskbarUIController.DEFAULT;
-
-    TaskbarIconController(TaskbarActivityContext activity, TaskbarDragLayer dragLayer) {
-        mActivity = activity;
-        mDragLayer = dragLayer;
-        mTaskbarView = mDragLayer.findViewById(R.id.taskbar_view);
-        mImeBarView = mDragLayer.findViewById(R.id.ime_bar_view);
-    }
-
-    public void init(OnClickListener clickListener, OnLongClickListener longClickListener) {
-        mDragLayer.addOnLayoutChangeListener((v, a, b, c, d, e, f, g, h) ->
-                mUIController.alignRealHotseatWithTaskbar());
-
-        ButtonProvider buttonProvider = new ButtonProvider(mActivity);
-        mImeBarView.init(buttonProvider);
-        mTaskbarView.construct(clickListener, longClickListener, buttonProvider);
-        mTaskbarView.getLayoutParams().height = mActivity.getDeviceProfile().taskbarSize;
-
-        mDragLayer.init(new Callbacks(), mTaskbarView);
-    }
-
-    public void onDestroy() {
-        mDragLayer.onDestroy();
-    }
-
-    public void setUIController(@NonNull TaskbarUIController uiController) {
-        mUIController = uiController;
-    }
-
-    /**
-     * When in 3 button nav, the above doesn't get called since we prevent sysui nav bar from
-     * instantiating at all, which is what's responsible for sending sysui state flags over.
-     *
-     * @param vis IME visibility flag
-     */
-    public void updateImeStatus(int displayId, int vis, boolean showImeSwitcher) {
-        if (displayId != mActivity.getDisplayId() || !mActivity.canShowNavButtons()) {
-            return;
-        }
-
-        mImeBarView.setImeSwitcherVisibility(showImeSwitcher);
-        setImeIsVisible((vis & InputMethodService.IME_VISIBLE) != 0);
-    }
-
-    /**
-     * Should be called when the IME visibility changes, so we can hide/show Taskbar accordingly.
-     */
-    public void setImeIsVisible(boolean isImeVisible) {
-        mTaskbarView.setTouchesEnabled(!isImeVisible);
-        mUIController.onImeVisible(mDragLayer, isImeVisible);
-    }
-
-    /**
-     * Callbacks for {@link TaskbarDragLayer} to interact with the icon controller
-     */
-    public class Callbacks {
-
-        /**
-         * Called to update the touchable insets
-         */
-        public void updateInsetsTouchability(InsetsInfo insetsInfo) {
-            insetsInfo.touchableRegion.setEmpty();
-            if (mDragLayer.getAlpha() < AlphaUpdateListener.ALPHA_CUTOFF_THRESHOLD) {
-                // Let touches pass through us.
-                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
-            } else if (mImeBarView.getVisibility() == VISIBLE) {
-                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_FRAME);
-            } else if (!mUIController.isTaskbarTouchable()) {
-                // Let touches pass through us.
-                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
-            } else if (mTaskbarView.areIconsVisible()) {
-                // Buttons are visible, take over the full taskbar area
-                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_FRAME);
-            } else {
-                if (mTaskbarView.mSystemButtonContainer.getVisibility() == VISIBLE) {
-                    mDragLayer.getDescendantRectRelativeToSelf(
-                            mTaskbarView.mSystemButtonContainer, mTempRect);
-                    insetsInfo.touchableRegion.set(mTempRect);
-                }
-                insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
-            }
-
-            // TaskbarContainerView provides insets to other apps based on contentInsets. These
-            // insets should stay consistent even if we expand TaskbarContainerView's bounds, e.g.
-            // to show a floating view like Folder. Thus, we set the contentInsets to be where
-            // mTaskbarView is, since its position never changes and insets rather than overlays.
-            insetsInfo.contentInsets.left = mTaskbarView.getLeft();
-            insetsInfo.contentInsets.top = mTaskbarView.getTop();
-            insetsInfo.contentInsets.right = mDragLayer.getWidth() - mTaskbarView.getRight();
-            insetsInfo.contentInsets.bottom = mDragLayer.getHeight() - mTaskbarView.getBottom();
-        }
-
-        public void onDragLayerViewRemoved() {
-            int count = mDragLayer.getChildCount();
-            // Ensure no other children present (like Folders, etc)
-            for (int i = 0; i < count; i++) {
-                View v = mDragLayer.getChildAt(i);
-                if (!((v instanceof TaskbarView) || (v instanceof ImeBarView))) {
-                    return;
-                }
-            }
-            mActivity.setTaskbarWindowFullscreen(false);
-        }
-
-        public void updateImeBarVisibilityAlpha(float alpha) {
-            if (!mActivity.canShowNavButtons()) {
-                // TODO Remove sysui IME bar for gesture nav as well
-                return;
-            }
-            mImeBarView.setAlpha(alpha);
-            mImeBarView.setVisibility(alpha == 0 ? GONE : VISIBLE);
-        }
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarKeyguardController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarKeyguardController.java
new file mode 100644
index 0000000..834cd9c
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarKeyguardController.java
@@ -0,0 +1,94 @@
+package com.android.launcher3.taskbar;
+
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_BACK_DISABLED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_BOUNCER_SHOWING;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_DEVICE_DOZING;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_HOME_DISABLED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_STATUS_BAR_KEYGUARD_SHOWING;
+
+import android.app.KeyguardManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+
+/**
+ * Controller for managing keyguard state for taskbar
+ */
+public class TaskbarKeyguardController {
+
+    private static final int KEYGUARD_SYSUI_FLAGS = SYSUI_STATE_BOUNCER_SHOWING |
+            SYSUI_STATE_STATUS_BAR_KEYGUARD_SHOWING | SYSUI_STATE_DEVICE_DOZING |
+            SYSUI_STATE_OVERVIEW_DISABLED | SYSUI_STATE_HOME_DISABLED |
+            SYSUI_STATE_BACK_DISABLED;
+
+    private final TaskbarActivityContext mContext;
+    private int mKeyguardSysuiFlags;
+    private boolean mBouncerShowing;
+    private NavbarButtonsViewController mNavbarButtonsViewController;
+    private final KeyguardManager mKeyguardManager;
+    private boolean mIsScreenOff;
+
+    private final BroadcastReceiver mScreenOffReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            mIsScreenOff = true;
+        }
+    };
+
+    public TaskbarKeyguardController(TaskbarActivityContext context) {
+        mContext = context;
+        mKeyguardManager = mContext.getSystemService(KeyguardManager.class);
+    }
+
+    public void init(NavbarButtonsViewController navbarButtonUIController) {
+        mNavbarButtonsViewController = navbarButtonUIController;
+        mContext.registerReceiver(mScreenOffReceiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));
+    }
+
+    public void updateStateForSysuiFlags(int systemUiStateFlags) {
+        boolean bouncerShowing = (systemUiStateFlags & SYSUI_STATE_BOUNCER_SHOWING) != 0;
+        boolean keyguardShowing = (systemUiStateFlags & SYSUI_STATE_STATUS_BAR_KEYGUARD_SHOWING)
+                != 0;
+        boolean dozing = (systemUiStateFlags & SYSUI_STATE_DEVICE_DOZING) != 0;
+
+        int interestingKeyguardFlags = systemUiStateFlags & KEYGUARD_SYSUI_FLAGS;
+        if (interestingKeyguardFlags == mKeyguardSysuiFlags) {
+            return;
+        }
+        mKeyguardSysuiFlags = interestingKeyguardFlags;
+
+        mBouncerShowing = bouncerShowing;
+
+        mNavbarButtonsViewController.setKeyguardVisible(keyguardShowing || dozing);
+        updateIconsForBouncer();
+    }
+
+    public boolean isScreenOff() {
+        return mIsScreenOff;
+    }
+
+    public void setScreenOn() {
+        mIsScreenOff = false;
+    }
+
+    /**
+     * Hides/shows taskbar when keyguard is up
+     */
+    private void updateIconsForBouncer() {
+        boolean disableBack = (mKeyguardSysuiFlags & SYSUI_STATE_BACK_DISABLED) != 0;
+        boolean disableRecent = (mKeyguardSysuiFlags & SYSUI_STATE_OVERVIEW_DISABLED) != 0;
+        boolean disableHome = (mKeyguardSysuiFlags & SYSUI_STATE_HOME_DISABLED) != 0;
+        boolean onlyBackEnabled = !disableBack && disableRecent && disableHome;
+
+        boolean showBackForBouncer = onlyBackEnabled &&
+                mKeyguardManager.isDeviceSecure() &&
+                mBouncerShowing;
+        mNavbarButtonsViewController.setBackForBouncer(showBackForBouncer);
+    }
+
+    public void onDestroy() {
+        mContext.unregisterReceiver(mScreenOffReceiver);
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
index d026bfb..45eabed 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
@@ -21,13 +21,12 @@
 import static com.android.launcher3.util.DisplayController.CHANGE_ACTIVE_SCREEN;
 import static com.android.launcher3.util.DisplayController.CHANGE_DENSITY;
 import static com.android.launcher3.util.DisplayController.CHANGE_SUPPORTED_BOUNDS;
-import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_IME_SHOWING;
 
 import android.content.Context;
 import android.hardware.display.DisplayManager;
-import android.inputmethodservice.InputMethodService;
 import android.view.Display;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.BaseQuickstepLauncher;
@@ -38,10 +37,11 @@
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SysUINavigationMode.Mode;
+import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TouchInteractionService;
 
 /**
- * Class to manager taskbar lifecycle
+ * Class to manage taskbar lifecycle
  */
 public class TaskbarManager implements DisplayController.DisplayInfoChangeListener,
         SysUINavigationMode.NavigationModeChangeListener {
@@ -53,6 +53,11 @@
 
     private TaskbarActivityContext mTaskbarActivityContext;
     private BaseQuickstepLauncher mLauncher;
+    /**
+     * Cache a copy here so we can initialize state whenever taskbar is recreated, since
+     * this class does not get re-initialized w/ new taskbars.
+     */
+    private int mSysuiStateFlags;
 
     private static final int CHANGE_FLAGS =
             CHANGE_ACTIVE_SCREEN | CHANGE_DENSITY | CHANGE_SUPPORTED_BOUNDS;
@@ -100,29 +105,43 @@
     }
 
     /**
-     * Sets or clears a launcher to act as taskbar callback
+     * Sets a launcher to act as taskbar callback
      */
-    public void setLauncher(@Nullable BaseQuickstepLauncher launcher) {
+    public void setLauncher(@NonNull BaseQuickstepLauncher launcher) {
         mLauncher = launcher;
         if (mTaskbarActivityContext != null) {
-            mTaskbarActivityContext.setUIController(mLauncher == null
-                    ? TaskbarUIController.DEFAULT
-                    : new LauncherTaskbarUIController(launcher, mTaskbarActivityContext));
+            mTaskbarActivityContext.setUIController(
+                    new LauncherTaskbarUIController(launcher, mTaskbarActivityContext));
+        }
+    }
+
+    /**
+     * Clears a previously set Launcher
+     */
+    public void clearLauncher(@NonNull BaseQuickstepLauncher launcher) {
+        if (mLauncher == launcher) {
+            mLauncher = null;
+            if (mTaskbarActivityContext != null) {
+                mTaskbarActivityContext.setUIController(TaskbarUIController.DEFAULT);
+            }
         }
     }
 
     private void recreateTaskbar() {
         destroyExistingTaskbar();
-        if (!FeatureFlags.ENABLE_TASKBAR.get()) {
+
+        DeviceProfile dp =
+                mUserUnlocked ? LauncherAppState.getIDP(mContext).getDeviceProfile(mContext) : null;
+
+        boolean isTaskBarEnabled =
+                FeatureFlags.ENABLE_TASKBAR.get() && dp != null && dp.isTaskbarPresent;
+
+        if (!isTaskBarEnabled) {
+            SystemUiProxy.INSTANCE.get(mContext)
+                    .notifyTaskbarStatus(/* visible */ false, /* stashed */ false);
             return;
         }
-        if (!mUserUnlocked) {
-            return;
-        }
-        DeviceProfile dp = LauncherAppState.getIDP(mContext).getDeviceProfile(mContext);
-        if (!dp.isTaskbarPresent) {
-            return;
-        }
+
         mTaskbarActivityContext = new TaskbarActivityContext(
                 mContext, dp.copy(mContext), mNavButtonController);
         mTaskbarActivityContext.init();
@@ -130,31 +149,35 @@
             mTaskbarActivityContext.setUIController(
                     new LauncherTaskbarUIController(mLauncher, mTaskbarActivityContext));
         }
+        onSysuiFlagsChangedInternal(mSysuiStateFlags, true /* forceUpdate */);
     }
 
-    /**
-     * See {@link com.android.systemui.shared.system.QuickStepContract.SystemUiStateFlags}
-     * @param systemUiStateFlags The latest SystemUiStateFlags
-     */
     public void onSystemUiFlagsChanged(int systemUiStateFlags) {
-        boolean isImeVisible = (systemUiStateFlags & SYSUI_STATE_IME_SHOWING) != 0;
+        onSysuiFlagsChangedInternal(systemUiStateFlags, false /* forceUpdate */);
+    }
+
+    private void onSysuiFlagsChangedInternal(int systemUiStateFlags, boolean forceUpdate) {
+        mSysuiStateFlags = systemUiStateFlags;
         if (mTaskbarActivityContext != null) {
-            mTaskbarActivityContext.setImeIsVisible(isImeVisible);
+            mTaskbarActivityContext.updateSysuiStateFlags(systemUiStateFlags, forceUpdate);
         }
     }
 
-    /**
-     * When in 3 button nav, the above doesn't get called since we prevent sysui nav bar from
-     * instantiating at all, which is what's responsible for sending sysui state flags over.
-     *
-     * @param vis IME visibility flag
-     * @param backDisposition Used to determine back button behavior for software keyboard
-     *                        See BACK_DISPOSITION_* constants in {@link InputMethodService}
-     */
-    public void updateImeStatus(int displayId, int vis, int backDisposition,
-            boolean showImeSwitcher) {
+    public void onRotationProposal(int rotation, boolean isValid) {
         if (mTaskbarActivityContext != null) {
-            mTaskbarActivityContext.updateImeStatus(displayId, vis, showImeSwitcher);
+            mTaskbarActivityContext.onRotationProposal(rotation, isValid);
+        }
+    }
+
+    public void disableNavBarElements(int displayId, int state1, int state2, boolean animate) {
+        if (mTaskbarActivityContext != null) {
+            mTaskbarActivityContext.disableNavBarElements(displayId, state1, state2, animate);
+        }
+    }
+
+    public void onSystemBarAttributesChanged(int displayId, int behavior) {
+        if (mTaskbarActivityContext != null) {
+            mTaskbarActivityContext.onSystemBarAttributesChanged(displayId, behavior);
         }
     }
 
@@ -166,4 +189,8 @@
         mDisplayController.removeChangeListener(this);
         mSysUINavigationMode.removeModeChangeListener(this);
     }
+
+    public @Nullable TaskbarActivityContext getCurrentActivityContext() {
+        return mTaskbarActivityContext;
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarModelCallbacks.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarModelCallbacks.java
new file mode 100644
index 0000000..fc5abd0
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarModelCallbacks.java
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import android.util.SparseArray;
+import android.view.View;
+
+import com.android.launcher3.LauncherSettings.Favorites;
+import com.android.launcher3.model.BgDataModel;
+import com.android.launcher3.model.BgDataModel.FixedContainerItems;
+import com.android.launcher3.model.data.ItemInfo;
+import com.android.launcher3.model.data.WorkspaceItemInfo;
+import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
+import com.android.launcher3.util.ItemInfoMatcher;
+import com.android.launcher3.util.LauncherBindableItemsContainer;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+
+/**
+ * Launcher model Callbacks for rendering taskbar.
+ */
+public class TaskbarModelCallbacks implements
+        BgDataModel.Callbacks, LauncherBindableItemsContainer {
+
+    private final SparseArray<ItemInfo> mHotseatItems = new SparseArray<>();
+    private List<ItemInfo> mPredictedItems = Collections.emptyList();
+
+    private final TaskbarActivityContext mContext;
+    private final TaskbarView mContainer;
+
+    private boolean mBindInProgress = false;
+
+    public TaskbarModelCallbacks(
+            TaskbarActivityContext context, TaskbarView container) {
+        mContext = context;
+        mContainer = container;
+    }
+
+    @Override
+    public void startBinding() {
+        mBindInProgress = true;
+        mHotseatItems.clear();
+        mPredictedItems = Collections.emptyList();
+    }
+
+    @Override
+    public void finishBindingItems(IntSet pagesBoundFirst) {
+        mBindInProgress = false;
+        commitItemsToUI();
+    }
+
+    @Override
+    public void bindAppsAdded(IntArray newScreens, ArrayList<ItemInfo> addNotAnimated,
+            ArrayList<ItemInfo> addAnimated) {
+        boolean add1 = handleItemsAdded(addNotAnimated);
+        boolean add2 = handleItemsAdded(addAnimated);
+        if (add1 || add2) {
+            commitItemsToUI();
+        }
+    }
+
+    @Override
+    public void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons) {
+        if (handleItemsAdded(shortcuts)) {
+            commitItemsToUI();
+        }
+    }
+
+    private boolean handleItemsAdded(List<ItemInfo> items) {
+        boolean modified = false;
+        for (ItemInfo item : items) {
+            if (item.container == Favorites.CONTAINER_HOTSEAT) {
+                mHotseatItems.put(item.screenId, item);
+                modified = true;
+            }
+        }
+        return modified;
+    }
+
+
+    @Override
+    public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) {
+        updateWorkspaceItems(updated, mContext);
+    }
+
+    @Override
+    public void bindRestoreItemsChange(HashSet<ItemInfo> updates) {
+        updateRestoreItems(updates, mContext);
+    }
+
+    @Override
+    public void mapOverItems(ItemOperator op) {
+        final int itemCount = mContainer.getChildCount();
+        for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) {
+            View item = mContainer.getChildAt(itemIdx);
+            if (op.evaluate((ItemInfo) item.getTag(), item)) {
+                return;
+            }
+        }
+    }
+
+    @Override
+    public void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher) {
+        if (handleItemsRemoved(matcher)) {
+            commitItemsToUI();
+        }
+    }
+
+    private boolean handleItemsRemoved(ItemInfoMatcher matcher) {
+        boolean modified = false;
+        for (int i = mHotseatItems.size() - 1; i >= 0; i--) {
+            if (matcher.matchesInfo(mHotseatItems.valueAt(i))) {
+                modified = true;
+                mHotseatItems.removeAt(i);
+            }
+        }
+        return modified;
+    }
+
+    @Override
+    public void bindItemsModified(List<ItemInfo> items) {
+        boolean removed = handleItemsRemoved(ItemInfoMatcher.ofItems(items));
+        boolean added = handleItemsAdded(items);
+        if (removed || added) {
+            commitItemsToUI();
+        }
+    }
+
+    @Override
+    public void bindExtraContainerItems(FixedContainerItems item) {
+        if (item.containerId == Favorites.CONTAINER_HOTSEAT_PREDICTION) {
+            mPredictedItems = item.items;
+            commitItemsToUI();
+        }
+    }
+
+    private void commitItemsToUI() {
+        if (mBindInProgress) {
+            return;
+        }
+
+        ItemInfo[] hotseatItemInfos =
+                new ItemInfo[mContext.getDeviceProfile().numShownHotseatIcons];
+        int predictionSize = mPredictedItems.size();
+        int predictionNextIndex = 0;
+
+        for (int i = 0; i < hotseatItemInfos.length; i++) {
+            hotseatItemInfos[i] = mHotseatItems.get(i);
+            if (hotseatItemInfos[i] == null && predictionNextIndex < predictionSize) {
+                hotseatItemInfos[i] = mPredictedItems.get(predictionNextIndex);
+                hotseatItemInfos[i].screenId = i;
+                predictionNextIndex++;
+            }
+        }
+        mContainer.updateHotseatItems(hotseatItemInfos);
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
index 3b5afad..6fbef9b 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
@@ -18,11 +18,12 @@
 
 import static android.view.Display.DEFAULT_DISPLAY;
 
-import android.content.Intent;
 import android.view.inputmethod.InputMethodManager;
 
 import androidx.annotation.IntDef;
 
+import com.android.launcher3.testing.TestLogging;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.quickstep.OverviewCommandHelper;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TouchInteractionService;
@@ -44,7 +45,9 @@
             BUTTON_BACK,
             BUTTON_HOME,
             BUTTON_RECENTS,
-            BUTTON_IME_SWITCH
+            BUTTON_IME_SWITCH,
+            BUTTON_A11Y,
+            BUTTON_A11Y_LONG_CLICK
     })
 
     public @interface TaskbarButton {}
@@ -53,6 +56,8 @@
     static final int BUTTON_HOME = BUTTON_BACK << 1;
     static final int BUTTON_RECENTS = BUTTON_HOME << 1;
     static final int BUTTON_IME_SWITCH = BUTTON_RECENTS << 1;
+    static final int BUTTON_A11Y = BUTTON_IME_SWITCH << 1;
+    static final int BUTTON_A11Y_LONG_CLICK = BUTTON_A11Y << 1;
 
     private final TouchInteractionService mService;
 
@@ -74,18 +79,22 @@
             case BUTTON_IME_SWITCH:
                 showIMESwitcher();
                 break;
+            case BUTTON_A11Y:
+                notifyImeClick(false /* longClick */);
+                break;
+            case BUTTON_A11Y_LONG_CLICK:
+                notifyImeClick(true /* longClick */);
+                break;
         }
     }
 
     private void navigateHome() {
-        mService.startActivity(new Intent(Intent.ACTION_MAIN)
-                .addCategory(Intent.CATEGORY_HOME)
-                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
+        mService.getOverviewCommandHelper().addCommand(OverviewCommandHelper.TYPE_HOME);
     }
 
     private void navigateToOverview() {
-        mService.getOverviewCommandHelper()
-                .addCommand(OverviewCommandHelper.TYPE_SHOW);
+        TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "onOverviewToggle");
+        mService.getOverviewCommandHelper().addCommand(OverviewCommandHelper.TYPE_TOGGLE);
     }
 
     private void executeBack() {
@@ -97,4 +106,13 @@
                 .showInputMethodPickerFromSystem(true /* showAuxiliarySubtypes */,
                         DEFAULT_DISPLAY);
     }
+
+    private void notifyImeClick(boolean longClick) {
+        SystemUiProxy systemUiProxy = SystemUiProxy.INSTANCE.getNoCreate();
+        if (longClick) {
+            systemUiProxy.notifyAccessibilityButtonLongClicked();
+        } else {
+            systemUiProxy.notifyAccessibilityButtonClicked(mService.getDisplayId());
+        }
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
new file mode 100644
index 0000000..1f5ff02
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
@@ -0,0 +1,334 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import static android.view.HapticFeedbackConstants.LONG_PRESS;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.annotation.Nullable;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.view.ViewConfiguration;
+
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
+import com.android.quickstep.AnimatedFloat;
+import com.android.quickstep.SystemUiProxy;
+
+/**
+ * Coordinates between controllers such as TaskbarViewController and StashedHandleViewController to
+ * create a cohesive animation between stashed/unstashed states.
+ */
+public class TaskbarStashController {
+
+    /**
+     * How long to stash/unstash when manually invoked via long press.
+     */
+    private static final long TASKBAR_STASH_DURATION = 300;
+
+    /**
+     * The scale TaskbarView animates to when being stashed.
+     */
+    private static final float STASHED_TASKBAR_SCALE = 0.5f;
+
+    /**
+     * How long the hint animation plays, starting on motion down.
+     */
+    private static final long TASKBAR_HINT_STASH_DURATION =
+            ViewConfiguration.DEFAULT_LONG_PRESS_TIMEOUT;
+
+    /**
+     * The scale that TaskbarView animates to when hinting towards the stashed state.
+     */
+    private static final float STASHED_TASKBAR_HINT_SCALE = 0.9f;
+
+    /**
+     * The scale that the stashed handle animates to when hinting towards the unstashed state.
+     */
+    private static final float UNSTASHED_TASKBAR_HANDLE_HINT_SCALE = 1.1f;
+
+    /**
+     * The SharedPreferences key for whether user has manually stashed the taskbar.
+     */
+    private static final String SHARED_PREFS_STASHED_KEY = "taskbar_is_stashed";
+
+    /**
+     * Whether taskbar should be stashed out of the box.
+     */
+    private static final boolean DEFAULT_STASHED_PREF = false;
+
+    private final TaskbarActivityContext mActivity;
+    private final SharedPreferences mPrefs;
+    private final int mStashedHeight;
+    private final int mUnstashedHeight;
+
+    // Initialized in init.
+    private TaskbarControllers mControllers;
+    // Taskbar background properties.
+    private AnimatedFloat mTaskbarBackgroundOffset;
+    // TaskbarView icon properties.
+    private AlphaProperty mIconAlphaForStash;
+    private AnimatedFloat mIconScaleForStash;
+    private AnimatedFloat mIconTranslationYForStash;
+    // Stashed handle properties.
+    private AnimatedFloat mTaskbarStashedHandleAlpha;
+    private AnimatedFloat mTaskbarStashedHandleHintScale;
+
+    /** Whether the user has manually invoked taskbar stashing, which we persist. */
+    private boolean mIsStashedInApp;
+    /** Whether we are currently visually stashed (might change based on launcher state). */
+    private boolean mIsStashed = false;
+
+    private @Nullable AnimatorSet mAnimator;
+
+    public TaskbarStashController(TaskbarActivityContext activity) {
+        mActivity = activity;
+        mPrefs = Utilities.getPrefs(mActivity);
+        final Resources resources = mActivity.getResources();
+        mStashedHeight = resources.getDimensionPixelSize(R.dimen.taskbar_stashed_size);
+        mUnstashedHeight = mActivity.getDeviceProfile().taskbarSize;
+    }
+
+    public void init(TaskbarControllers controllers) {
+        mControllers = controllers;
+
+        TaskbarDragLayerController dragLayerController = controllers.taskbarDragLayerController;
+        mTaskbarBackgroundOffset = dragLayerController.getTaskbarBackgroundOffset();
+
+        TaskbarViewController taskbarViewController = controllers.taskbarViewController;
+        mIconAlphaForStash = taskbarViewController.getTaskbarIconAlpha().getProperty(
+                TaskbarViewController.ALPHA_INDEX_STASH);
+        mIconScaleForStash = taskbarViewController.getTaskbarIconScaleForStash();
+        mIconTranslationYForStash = taskbarViewController.getTaskbarIconTranslationYForStash();
+
+        StashedHandleViewController stashedHandleController =
+                controllers.stashedHandleViewController;
+        mTaskbarStashedHandleAlpha = stashedHandleController.getStashedHandleAlpha();
+        mTaskbarStashedHandleHintScale = stashedHandleController.getStashedHandleHintScale();
+
+        mIsStashedInApp = supportsStashing()
+                && mPrefs.getBoolean(SHARED_PREFS_STASHED_KEY, DEFAULT_STASHED_PREF);
+
+        SystemUiProxy.INSTANCE.get(mActivity)
+                .notifyTaskbarStatus(/* visible */ true, /* stashed */ mIsStashedInApp);
+    }
+
+    /**
+     * Returns whether the user can manually stash the taskbar based on the current device state.
+     */
+    private boolean supportsStashing() {
+        return !mActivity.isThreeButtonNav()
+                && (!Utilities.IS_RUNNING_IN_TEST_HARNESS || supportsStashingForTests());
+    }
+
+    private boolean supportsStashingForTests() {
+        // TODO: enable this for tests that specifically check stash/unstash behavior.
+        return false;
+    }
+
+    /**
+     * Returns whether the taskbar is currently visually stashed.
+     */
+    public boolean isStashed() {
+        return mIsStashed;
+    }
+
+    /**
+     * Returns whether the user has manually stashed the taskbar in apps.
+     */
+    public boolean isStashedInApp() {
+        return mIsStashedInApp;
+    }
+
+    public int getContentHeight() {
+        return isStashed() ? mStashedHeight : mUnstashedHeight;
+    }
+
+    public int getStashedHeight() {
+        return mStashedHeight;
+    }
+
+    /**
+     * Should be called when long pressing the nav region when taskbar is present.
+     * @return Whether taskbar was stashed and now is unstashed.
+     */
+    public boolean onLongPressToUnstashTaskbar() {
+        if (!isStashed()) {
+            // We only listen for long press on the nav region to unstash the taskbar. To stash the
+            // taskbar, we use an OnLongClickListener on TaskbarView instead.
+            return false;
+        }
+        if (updateAndAnimateIsStashedInApp(false)) {
+            mControllers.taskbarActivityContext.getDragLayer().performHapticFeedback(LONG_PRESS);
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Updates whether we should stash the taskbar when in apps, and animates to the changed state.
+     * @return Whether we started an animation to either be newly stashed or unstashed.
+     */
+    public boolean updateAndAnimateIsStashedInApp(boolean isStashedInApp) {
+        if (!supportsStashing()) {
+            return false;
+        }
+        if (mIsStashedInApp != isStashedInApp) {
+            boolean wasStashed = mIsStashedInApp;
+            mIsStashedInApp = isStashedInApp;
+            mPrefs.edit().putBoolean(SHARED_PREFS_STASHED_KEY, mIsStashedInApp).apply();
+            boolean isStashed = mIsStashedInApp;
+            if (wasStashed != isStashed) {
+                SystemUiProxy.INSTANCE.get(mActivity)
+                        .notifyTaskbarStatus(/* visible */ true, /* stashed */ isStashed);
+                mControllers.uiController.onStashedInAppChanged();
+                createAnimToIsStashed(isStashed, TASKBAR_STASH_DURATION).start();
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Starts an animation to the new stashed state with a default duration.
+     */
+    public void animateToIsStashed(boolean isStashed) {
+        animateToIsStashed(isStashed, TASKBAR_STASH_DURATION);
+    }
+
+    /**
+     * Starts an animation to the new stashed state with the specified duration.
+     */
+    public void animateToIsStashed(boolean isStashed, long duration) {
+        createAnimToIsStashed(isStashed, duration).start();
+    }
+
+    private Animator createAnimToIsStashed(boolean isStashed, long duration) {
+        AnimatorSet fullLengthAnimatorSet = new AnimatorSet();
+        // Not exactly half and may overlap. See [first|second]HalfDurationScale below.
+        AnimatorSet firstHalfAnimatorSet = new AnimatorSet();
+        AnimatorSet secondHalfAnimatorSet = new AnimatorSet();
+
+        final float firstHalfDurationScale;
+        final float secondHalfDurationScale;
+
+        if (isStashed) {
+            firstHalfDurationScale = 0.75f;
+            secondHalfDurationScale = 0.5f;
+            final float stashTranslation = (mUnstashedHeight - mStashedHeight) / 2f;
+
+            fullLengthAnimatorSet.playTogether(
+                    mTaskbarBackgroundOffset.animateToValue(1),
+                    mIconTranslationYForStash.animateToValue(stashTranslation)
+            );
+            firstHalfAnimatorSet.playTogether(
+                    mIconAlphaForStash.animateToValue(0),
+                    mIconScaleForStash.animateToValue(STASHED_TASKBAR_SCALE)
+            );
+            secondHalfAnimatorSet.playTogether(
+                    mTaskbarStashedHandleAlpha.animateToValue(1)
+            );
+        } else  {
+            firstHalfDurationScale = 0.5f;
+            secondHalfDurationScale = 0.75f;
+
+            fullLengthAnimatorSet.playTogether(
+                    mTaskbarBackgroundOffset.animateToValue(0),
+                    mIconScaleForStash.animateToValue(1),
+                    mIconTranslationYForStash.animateToValue(0)
+            );
+            firstHalfAnimatorSet.playTogether(
+                    mTaskbarStashedHandleAlpha.animateToValue(0)
+            );
+            secondHalfAnimatorSet.playTogether(
+                    mIconAlphaForStash.animateToValue(1)
+            );
+        }
+
+        Animator stashedHandleRevealAnim = mControllers.stashedHandleViewController
+                .createRevealAnimToIsStashed(isStashed);
+        if (stashedHandleRevealAnim != null) {
+            fullLengthAnimatorSet.play(stashedHandleRevealAnim);
+        }
+        // Return the stashed handle to its default scale in case it was changed as part of the
+        // feedforward hint. Note that the reveal animation above also visually scales it.
+        fullLengthAnimatorSet.play(mTaskbarStashedHandleHintScale.animateToValue(1f));
+
+        fullLengthAnimatorSet.setDuration(duration);
+        firstHalfAnimatorSet.setDuration((long) (duration * firstHalfDurationScale));
+        secondHalfAnimatorSet.setDuration((long) (duration * secondHalfDurationScale));
+        secondHalfAnimatorSet.setStartDelay((long) (duration * (1 - secondHalfDurationScale)));
+
+        if (mAnimator != null) {
+            mAnimator.cancel();
+        }
+        mAnimator = new AnimatorSet();
+        mAnimator.playTogether(fullLengthAnimatorSet, firstHalfAnimatorSet,
+                secondHalfAnimatorSet);
+        mAnimator.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationStart(Animator animation) {
+                mIsStashed = isStashed;
+                onIsStashed(mIsStashed);
+            }
+
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mAnimator = null;
+            }
+        });
+        return mAnimator;
+    }
+
+    /**
+     * Creates and starts a partial stash animation, hinting at the new state that will trigger when
+     * long press is detected.
+     * @param animateForward Whether we are going towards the new stashed state or returning to the
+     *                       unstashed state.
+     */
+    public void startStashHint(boolean animateForward) {
+        if (isStashed() || !supportsStashing()) {
+            // Already stashed, no need to hint in that direction.
+            return;
+        }
+        mIconScaleForStash.animateToValue(
+                animateForward ? STASHED_TASKBAR_HINT_SCALE : 1)
+                .setDuration(TASKBAR_HINT_STASH_DURATION).start();
+    }
+
+    /**
+     * Creates and starts a partial unstash animation, hinting at the new state that will trigger
+     * when long press is detected.
+     * @param animateForward Whether we are going towards the new unstashed state or returning to
+     *                       the stashed state.
+     */
+    public void startUnstashHint(boolean animateForward) {
+        if (!isStashed()) {
+            // Already unstashed, no need to hint in that direction.
+            return;
+        }
+        mTaskbarStashedHandleHintScale.animateToValue(
+                animateForward ? UNSTASHED_TASKBAR_HANDLE_HINT_SCALE : 1)
+                .setDuration(TASKBAR_HINT_STASH_DURATION).start();
+    }
+
+    private void onIsStashed(boolean isStashed) {
+        mControllers.stashedHandleViewController.onIsStashed(isStashed);
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarStateHandler.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarStateHandler.java
index a701aae..edd2a22 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarStateHandler.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarStateHandler.java
@@ -16,11 +16,8 @@
 package com.android.launcher3.taskbar;
 
 import static com.android.launcher3.LauncherState.TASKBAR;
-import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 
-import androidx.annotation.Nullable;
-
 import com.android.launcher3.BaseQuickstepLauncher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.anim.PendingAnimation;
@@ -28,29 +25,26 @@
 import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.states.StateAnimationConfig;
 import com.android.quickstep.AnimatedFloat;
+import com.android.quickstep.SystemUiProxy;
 
 /**
- * StateHandler to animate Taskbar according to Launcher's state machine. Does nothing if Taskbar
- * isn't present (i.e. {@link #setAnimationController} is never called).
+ * StateHandler to animate Taskbar according to Launcher's state machine.
  */
 public class TaskbarStateHandler implements StateManager.StateHandler<LauncherState> {
 
     private final BaseQuickstepLauncher mLauncher;
 
-    // Contains Taskbar-related methods and fields we should aniamte. If null, don't do anything.
-    private @Nullable TaskbarAnimationController mAnimationController = null;
+    private AnimatedFloat mNavbarButtonAlpha = new AnimatedFloat(this::updateNavbarButtonAlpha);
 
     public TaskbarStateHandler(BaseQuickstepLauncher launcher) {
         mLauncher = launcher;
     }
 
-    public void setAnimationController(TaskbarAnimationController callbacks) {
-        mAnimationController = callbacks;
-    }
-
     @Override
     public void setState(LauncherState state) {
         setState(state, PropertySetter.NO_ANIM_PROPERTY_SETTER);
+        // Force update the alpha in case it was not initialized properly
+        updateNavbarButtonAlpha();
     }
 
     @Override
@@ -59,17 +53,19 @@
         setState(toState, animation);
     }
 
-    private void setState(LauncherState toState, PropertySetter setter) {
-        if (mAnimationController == null) {
-            return;
-        }
-
+    /**
+     * Sets the provided state
+     */
+    public void setState(LauncherState toState, PropertySetter setter) {
         boolean isTaskbarVisible = (toState.getVisibleElements(mLauncher) & TASKBAR) != 0;
-        setter.setFloat(mAnimationController.getTaskbarVisibilityForLauncherState(),
-                AnimatedFloat.VALUE, isTaskbarVisible ? 1f : 0f, LINEAR);
-        setter.setFloat(mAnimationController.getTaskbarScaleForLauncherState(),
-                AnimatedFloat.VALUE, toState.getTaskbarScale(mLauncher), LINEAR);
-        setter.setFloat(mAnimationController.getTaskbarTranslationYForLauncherState(),
-                AnimatedFloat.VALUE, toState.getTaskbarTranslationY(mLauncher), ACCEL_DEACCEL);
+        // Make the nav bar visible in states that taskbar isn't visible.
+        // TODO: We should draw our own handle instead of showing the nav bar.
+        float navbarButtonAlpha = isTaskbarVisible ? 0f : 1f;
+        setter.setFloat(mNavbarButtonAlpha, AnimatedFloat.VALUE, navbarButtonAlpha, LINEAR);
+    }
+
+
+    private void updateNavbarButtonAlpha() {
+        SystemUiProxy.INSTANCE.get(mLauncher).setNavBarButtonAlpha(mNavbarButtonAlpha.value, false);
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
index 50adead..df88e02 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
@@ -15,6 +15,8 @@
  */
 package com.android.launcher3.taskbar;
 
+import android.graphics.Rect;
+
 /**
  * Base class for providing different taskbar UI
  */
@@ -22,12 +24,7 @@
 
     public static final TaskbarUIController DEFAULT = new TaskbarUIController();
 
-    /**
-     * Pads the Hotseat to line up exactly with Taskbar's copy of the Hotseat.
-     */
-    public void alignRealHotseatWithTaskbar() { }
-
-    protected void onCreate() { }
+    protected void init(TaskbarControllers taskbarControllers) { }
 
     protected void onDestroy() { }
 
@@ -35,7 +32,7 @@
         return true;
     }
 
-    protected void onImeVisible(TaskbarDragLayer container, boolean isVisible) {
-        container.updateImeBarVisibilityAlpha(isVisible ? 1 : 0);
-    }
+    protected void updateContentInsets(Rect outContentInsets) { }
+
+    protected void onStashedInAppChanged() { }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
index c6573a6..a4a92f7 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
@@ -15,76 +15,54 @@
  */
 package com.android.launcher3.taskbar;
 
-import static android.view.View.MeasureSpec.EXACTLY;
-import static android.view.View.MeasureSpec.makeMeasureSpec;
-
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Canvas;
 import android.graphics.Rect;
-import android.graphics.RectF;
 import android.util.AttributeSet;
-import android.view.DragEvent;
-import android.view.Gravity;
 import android.view.MotionEvent;
 import android.view.View;
-import android.view.ViewConfiguration;
-import android.widget.LinearLayout;
+import android.widget.FrameLayout;
 
 import androidx.annotation.LayoutRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.BubbleTextView;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.model.data.FolderInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
+import com.android.launcher3.uioverrides.ApiWrapper;
 import com.android.launcher3.views.ActivityContext;
 
 /**
  * Hosts the Taskbar content such as Hotseat and Recent Apps. Drawn on top of other apps.
  */
-public class TaskbarView extends LinearLayout implements FolderIcon.FolderIconParent, Insettable {
+public class TaskbarView extends FrameLayout implements FolderIcon.FolderIconParent, Insettable {
 
-    private final int mIconTouchSize;
-    private final boolean mIsRtl;
-    private final int mTouchSlop;
-    private final RectF mTempDelegateBounds = new RectF();
-    private final RectF mDelegateSlopBounds = new RectF();
     private final int[] mTempOutLocation = new int[2];
 
+    private final Rect mIconLayoutBounds = new Rect();
+    private final int mIconTouchSize;
     private final int mItemMarginLeftRight;
+    private final int mItemPadding;
 
     private final TaskbarActivityContext mActivityContext;
 
-    // Initialized in TaskbarController constructor.
+    // Initialized in init.
+    private TaskbarViewController.TaskbarViewCallbacks mControllerCallbacks;
     private View.OnClickListener mIconClickListener;
     private View.OnLongClickListener mIconLongClickListener;
 
-    LinearLayout mSystemButtonContainer;
-    LinearLayout mHotseatIconsContainer;
-
-    // Delegate touches to the closest view if within mIconTouchSize.
-    private boolean mDelegateTargeted;
-    private View mDelegateView;
     // Prevents dispatching touches to children if true
     private boolean mTouchEnabled = true;
 
-    private boolean mIsDraggingItem;
     // Only non-null when the corresponding Folder is open.
     private @Nullable FolderIcon mLeaveBehindFolderIcon;
 
-    /** Provider of buttons added to taskbar in 3 button nav */
-    private ButtonProvider mButtonProvider;
-
-    private boolean mDisableRelayout;
-    private boolean mAreHolesAllowed;
-
     public TaskbarView(@NonNull Context context) {
         this(context, null);
     }
@@ -105,85 +83,76 @@
 
         Resources resources = getResources();
         mIconTouchSize = resources.getDimensionPixelSize(R.dimen.taskbar_icon_touch_size);
-        mItemMarginLeftRight = resources.getDimensionPixelSize(R.dimen.taskbar_icon_spacing);
 
-        mIsRtl = Utilities.isRtl(resources);
-        mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
+        int actualMargin = resources.getDimensionPixelSize(R.dimen.taskbar_icon_spacing);
+        int actualIconSize = mActivityContext.getDeviceProfile().iconSizePx;
+
+        // We layout the icons to be of mIconTouchSize in width and height
+        mItemMarginLeftRight = actualMargin - (mIconTouchSize - actualIconSize) / 2;
+        mItemPadding = (mIconTouchSize - actualIconSize) / 2;
     }
 
-    @Override
-    protected void onFinishInflate() {
-        super.onFinishInflate();
-        mSystemButtonContainer = findViewById(R.id.system_button_layout);
-        mHotseatIconsContainer = findViewById(R.id.hotseat_icons_layout);
+    protected void init(TaskbarViewController.TaskbarViewCallbacks callbacks) {
+        mControllerCallbacks = callbacks;
+        mIconClickListener = mControllerCallbacks.getIconOnClickListener();
+        mIconLongClickListener = mControllerCallbacks.getIconOnLongClickListener();
+
+        setOnLongClickListener(mControllerCallbacks.getBackgroundOnLongClickListener());
     }
 
-    protected void construct(OnClickListener clickListener, OnLongClickListener longClickListener,
-                ButtonProvider buttonProvider) {
-        mIconClickListener = clickListener;
-        mIconLongClickListener = longClickListener;
-        mButtonProvider = buttonProvider;
-
-        if (mActivityContext.canShowNavButtons()) {
-            createNavButtons();
-        } else {
-            mSystemButtonContainer.setVisibility(GONE);
+    private void removeAndRecycle(View view) {
+        removeView(view);
+        view.setOnClickListener(null);
+        view.setOnLongClickListener(null);
+        if (!(view.getTag() instanceof FolderInfo)) {
+            mActivityContext.getViewCache().recycleView(view.getSourceLayoutResId(), view);
         }
-
-        int numHotseatIcons = mActivityContext.getDeviceProfile().numShownHotseatIcons;
-        updateHotseatItems(new ItemInfo[numHotseatIcons]);
-    }
-
-    /**
-     * Enables/disables empty icons in taskbar so that the layout matches with Launcher
-     */
-    public void setHolesAllowedInLayout(boolean areHolesAllowed) {
-        if (mAreHolesAllowed != areHolesAllowed) {
-            mAreHolesAllowed = areHolesAllowed;
-            updateHotseatItemsVisibility();
-            // TODO: Add animation
-        }
-    }
-
-    private void setHolesAllowedInLayoutNoAnimation(boolean areHolesAllowed) {
-        if (mAreHolesAllowed != areHolesAllowed) {
-            mAreHolesAllowed = areHolesAllowed;
-            updateHotseatItemsVisibility();
-            onMeasure(makeMeasureSpec(getMeasuredWidth(), EXACTLY),
-                    makeMeasureSpec(getMeasuredHeight(), EXACTLY));
-            onLayout(false, getLeft(), getTop(), getRight(), getBottom());
-        }
+        view.setTag(null);
     }
 
     /**
      * Inflates/binds the Hotseat views to show in the Taskbar given their ItemInfos.
      */
     protected void updateHotseatItems(ItemInfo[] hotseatItemInfos) {
+        int nextViewIndex = 0;
+
         for (int i = 0; i < hotseatItemInfos.length; i++) {
-            ItemInfo hotseatItemInfo = hotseatItemInfos[
-                    !mIsRtl ? i : hotseatItemInfos.length - i - 1];
-            View hotseatView = mHotseatIconsContainer.getChildAt(i);
+            ItemInfo hotseatItemInfo = hotseatItemInfos[i];
+            if (hotseatItemInfo == null) {
+                continue;
+            }
 
             // Replace any Hotseat views with the appropriate type if it's not already that type.
             final int expectedLayoutResId;
             boolean isFolder = false;
-            boolean needsReinflate = false;
-            if (hotseatItemInfo != null && hotseatItemInfo.isPredictedItem()) {
+            if (hotseatItemInfo.isPredictedItem()) {
                 expectedLayoutResId = R.layout.taskbar_predicted_app_icon;
             } else if (hotseatItemInfo instanceof FolderInfo) {
                 expectedLayoutResId = R.layout.folder_icon;
                 isFolder = true;
-                // Unlike for BubbleTextView, we can't reapply a new FolderInfo after inflation, so
-                // if the info changes we need to reinflate. This should only happen if a new folder
-                // is dragged to the position that another folder previously existed.
-                needsReinflate = hotseatView != null && hotseatView.getTag() != hotseatItemInfo;
             } else {
                 expectedLayoutResId = R.layout.taskbar_app_icon;
             }
-            if (hotseatView == null
-                    || hotseatView.getSourceLayoutResId() != expectedLayoutResId
-                    || needsReinflate) {
-                mHotseatIconsContainer.removeView(hotseatView);
+
+            View hotseatView = null;
+            while (nextViewIndex < getChildCount()) {
+                hotseatView = getChildAt(nextViewIndex);
+
+                // see if the view can be reused
+                if ((hotseatView.getSourceLayoutResId() != expectedLayoutResId)
+                        || (isFolder && (hotseatView.getTag() != hotseatItemInfo))) {
+                    // Unlike for BubbleTextView, we can't reapply a new FolderInfo after inflation,
+                    // so if the info changes we need to reinflate. This should only happen if a new
+                    // folder is dragged to the position that another folder previously existed.
+                    removeAndRecycle(hotseatView);
+                    hotseatView = null;
+                } else {
+                    // View found
+                    break;
+                }
+            }
+
+            if (hotseatView == null) {
                 if (isFolder) {
                     FolderInfo folderInfo = (FolderInfo) hotseatItemInfo;
                     FolderIcon folderIcon = FolderIcon.inflateFolderAndIcon(expectedLayoutResId,
@@ -193,10 +162,9 @@
                 } else {
                     hotseatView = inflate(expectedLayoutResId);
                 }
-                int iconSize = mActivityContext.getDeviceProfile().iconSizePx;
-                LayoutParams lp = new LayoutParams(iconSize, iconSize);
-                lp.setMargins(mItemMarginLeftRight, 0, mItemMarginLeftRight, 0);
-                mHotseatIconsContainer.addView(hotseatView, i, lp);
+                LayoutParams lp = new LayoutParams(mIconTouchSize, mIconTouchSize);
+                hotseatView.setPadding(mItemPadding, mItemPadding, mItemPadding, mItemPadding);
+                addView(hotseatView, nextViewIndex, lp);
             }
 
             // Apply the Hotseat ItemInfos, or hide the view if there is none for a given index.
@@ -204,29 +172,52 @@
                     && hotseatItemInfo instanceof WorkspaceItemInfo) {
                 ((BubbleTextView) hotseatView).applyFromWorkspaceItem(
                         (WorkspaceItemInfo) hotseatItemInfo);
-                hotseatView.setOnClickListener(mIconClickListener);
-                hotseatView.setOnLongClickListener(mIconLongClickListener);
-            } else if (isFolder) {
-                hotseatView.setOnClickListener(mIconClickListener);
-                hotseatView.setOnLongClickListener(mIconLongClickListener);
-            } else {
-                hotseatView.setOnClickListener(null);
-                hotseatView.setOnLongClickListener(null);
-                hotseatView.setTag(null);
             }
-            updateHotseatItemVisibility(hotseatView);
+            setClickAndLongClickListenersForIcon(hotseatView);
+            nextViewIndex++;
+        }
+        // Remove remaining views
+        while (nextViewIndex < getChildCount()) {
+            removeAndRecycle(getChildAt(nextViewIndex));
         }
     }
 
-    protected void updateHotseatItemsVisibility() {
-        for (int i = mHotseatIconsContainer.getChildCount() - 1; i >= 0; i--) {
-            updateHotseatItemVisibility(mHotseatIconsContainer.getChildAt(i));
-        }
+    /**
+     * Sets OnClickListener and OnLongClickListener for the given view.
+     */
+    public void setClickAndLongClickListenersForIcon(View icon) {
+        icon.setOnClickListener(mIconClickListener);
+        icon.setOnLongClickListener(mIconLongClickListener);
     }
 
-    private void updateHotseatItemVisibility(View hotseatView) {
-        hotseatView.setVisibility(
-                hotseatView.getTag() != null ? VISIBLE : (mAreHolesAllowed ? INVISIBLE : GONE));
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        int count = getChildCount();
+        int spaceNeeded = count * (mItemMarginLeftRight * 2 + mIconTouchSize);
+        int navSpaceNeeded = ApiWrapper.getHotseatEndOffset(getContext());
+        boolean layoutRtl = isLayoutRtl();
+        int iconEnd = right - (right - left - spaceNeeded) / 2;
+        boolean needMoreSpaceForNav = layoutRtl ?
+                navSpaceNeeded > (iconEnd - spaceNeeded) :
+                iconEnd > (right - navSpaceNeeded);
+        if (needMoreSpaceForNav) {
+            int offset = layoutRtl ?
+                    navSpaceNeeded - (iconEnd - spaceNeeded) :
+                    (right - navSpaceNeeded) - iconEnd;
+            iconEnd += offset;
+        }
+        // Layout the children
+        mIconLayoutBounds.right = iconEnd;
+        mIconLayoutBounds.top = (bottom - top - mIconTouchSize) / 2;
+        mIconLayoutBounds.bottom = mIconLayoutBounds.top + mIconTouchSize;
+        for (int i = count; i > 0; i--) {
+            View child = getChildAt(i - 1);
+            iconEnd -= mItemMarginLeftRight;
+            int iconStart = iconEnd - mIconTouchSize;
+            child.layout(iconStart, mIconLayoutBounds.top, iconEnd, mIconLayoutBounds.bottom);
+            iconEnd = iconStart - mItemMarginLeftRight;
+        }
+        mIconLayoutBounds.left = iconEnd;
     }
 
     @Override
@@ -239,8 +230,11 @@
 
     @Override
     public boolean onTouchEvent(MotionEvent event) {
-        boolean handled = delegateTouchIfNecessary(event);
-        return super.onTouchEvent(event) || handled;
+        if (!mTouchEnabled) {
+            return true;
+        }
+        mControllerCallbacks.onTouchEvent(event);
+        return super.onTouchEvent(event);
     }
 
     public void setTouchesEnabled(boolean touchEnabled) {
@@ -248,149 +242,18 @@
     }
 
     /**
-     * User touched the Taskbar background. Determine whether the touch is close enough to a view
-     * that we should forward the touches to it.
-     * @return Whether a delegate view was chosen and it handled the touch event.
-     */
-    private boolean delegateTouchIfNecessary(MotionEvent event) {
-        final float x = event.getX();
-        final float y = event.getY();
-        if (mDelegateView == null && event.getAction() == MotionEvent.ACTION_DOWN) {
-            View delegateView = findDelegateView(x, y);
-            if (delegateView != null) {
-                mDelegateTargeted = true;
-                mDelegateView = delegateView;
-                mDelegateSlopBounds.set(mTempDelegateBounds);
-                mDelegateSlopBounds.inset(-mTouchSlop, -mTouchSlop);
-            }
-        }
-
-        boolean sendToDelegate = mDelegateTargeted;
-        boolean inBounds = true;
-        switch (event.getAction()) {
-            case MotionEvent.ACTION_MOVE:
-                inBounds = mDelegateSlopBounds.contains(x, y);
-                break;
-            case MotionEvent.ACTION_UP:
-            case MotionEvent.ACTION_CANCEL:
-                mDelegateTargeted = false;
-                break;
-        }
-
-        boolean handled = false;
-        if (sendToDelegate) {
-            if (inBounds) {
-                // Offset event coordinates to be inside the target view
-                event.setLocation(mDelegateView.getWidth() / 2f, mDelegateView.getHeight() / 2f);
-            } else {
-                // Offset event coordinates to be outside the target view (in case it does
-                // something like tracking pressed state)
-                event.setLocation(-mTouchSlop * 2, -mTouchSlop * 2);
-            }
-            handled = mDelegateView.dispatchTouchEvent(event);
-            // Cleanup if this was the last event to send to the delegate.
-            if (!mDelegateTargeted) {
-                mDelegateView = null;
-            }
-        }
-        return handled;
-    }
-
-    /**
-     * Return an item whose touch bounds contain the given coordinates,
-     * or null if no such item exists.
-     *
-     * Also sets {@link #mTempDelegateBounds} to be the touch bounds of the chosen delegate view.
-     */
-    private @Nullable View findDelegateView(float x, float y) {
-        for (int i = 0; i < getChildCount(); i++) {
-            View child = getChildAt(i);
-            if (!child.isShown() || !child.isClickable()) {
-                continue;
-            }
-            int childCenterX = child.getLeft() + child.getWidth() / 2;
-            int childCenterY = child.getTop() + child.getHeight() / 2;
-            mTempDelegateBounds.set(
-                    childCenterX - mIconTouchSize / 2f,
-                    childCenterY - mIconTouchSize / 2f,
-                    childCenterX + mIconTouchSize / 2f,
-                    childCenterY + mIconTouchSize / 2f);
-            if (mTempDelegateBounds.contains(x, y)) {
-                return child;
-            }
-        }
-        return null;
-    }
-
-    /**
      * Returns whether the given MotionEvent, *in screen coorindates*, is within any Taskbar item's
      * touch bounds.
      */
     public boolean isEventOverAnyItem(MotionEvent ev) {
         getLocationOnScreen(mTempOutLocation);
-        float xInOurCoordinates = ev.getX() - mTempOutLocation[0];
-        float yInOurCoorindates = ev.getY() - mTempOutLocation[1];
-        return findDelegateView(xInOurCoordinates, yInOurCoorindates) != null;
+        int xInOurCoordinates = (int) ev.getX() - mTempOutLocation[0];
+        int yInOurCoorindates = (int) ev.getY() - mTempOutLocation[1];
+        return isShown() && mIconLayoutBounds.contains(xInOurCoordinates, yInOurCoorindates);
     }
 
-    /**
-     * Add back/home/recents buttons into a single ViewGroup that will be inserted at
-     * {@param navButtonStartIndex}
-     */
-    private void createNavButtons() {
-        LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(
-                mActivityContext.getDeviceProfile().iconSizePx,
-                mActivityContext.getDeviceProfile().iconSizePx
-        );
-        buttonParams.gravity = Gravity.CENTER;
-
-        mSystemButtonContainer.addView(mButtonProvider.getBack(), buttonParams);
-        mSystemButtonContainer.addView(mButtonProvider.getHome(), buttonParams);
-        mSystemButtonContainer.addView(mButtonProvider.getRecents(), buttonParams);
-    }
-
-    @Override
-    public boolean onDragEvent(DragEvent event) {
-        switch (event.getAction()) {
-            case DragEvent.ACTION_DRAG_STARTED:
-                mIsDraggingItem = true;
-                AbstractFloatingView.closeAllOpenViews(mActivityContext);
-                return true;
-            case DragEvent.ACTION_DRAG_ENDED:
-                mIsDraggingItem = false;
-                break;
-        }
-        return super.onDragEvent(event);
-    }
-
-    public boolean isDraggingItem() {
-        return mIsDraggingItem;
-    }
-
-    /**
-     * @return The bounding box of where the hotseat elements are relative to this TaskbarView.
-     */
-    protected RectF getHotseatBounds() {
-        RectF result;
-        mDisableRelayout = true;
-        boolean wereHolesAllowed = mAreHolesAllowed;
-        setHolesAllowedInLayoutNoAnimation(true);
-        result = new RectF(
-                mHotseatIconsContainer.getLeft(),
-                mHotseatIconsContainer.getTop(),
-                mHotseatIconsContainer.getRight(),
-                mHotseatIconsContainer.getBottom());
-        setHolesAllowedInLayoutNoAnimation(wereHolesAllowed);
-        mDisableRelayout = false;
-
-        return result;
-    }
-
-    @Override
-    public void requestLayout() {
-        if (!mDisableRelayout) {
-            super.requestLayout();
-        }
+    public Rect getIconLayoutBounds() {
+        return mIconLayoutBounds;
     }
 
     // FolderIconParent implemented methods.
@@ -421,7 +284,7 @@
     }
 
     private View inflate(@LayoutRes int layoutResId) {
-        return mActivityContext.getLayoutInflater().inflate(layoutResId, this, false);
+        return mActivityContext.getViewCache().getView(layoutResId, mActivityContext, this);
     }
 
     @Override
@@ -429,11 +292,8 @@
         // Ignore, we just implement Insettable to draw behind system insets.
     }
 
-    public void setIconsVisibility(boolean isVisible) {
-        mHotseatIconsContainer.setVisibility(isVisible ? VISIBLE : INVISIBLE);
-    }
-
     public boolean areIconsVisible() {
-        return mHotseatIconsContainer.getVisibility() == VISIBLE;
+        // Consider the overall visibility
+        return getVisibility() == VISIBLE;
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
new file mode 100644
index 0000000..6b95f08
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X;
+import static com.android.launcher3.Utilities.squaredHypot;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.quickstep.AnimatedFloat.VALUE;
+
+import android.graphics.Rect;
+import android.view.MotionEvent;
+import android.view.View;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.anim.PendingAnimation;
+import com.android.launcher3.model.data.ItemInfo;
+import com.android.launcher3.util.MultiValueAlpha;
+import com.android.quickstep.AnimatedFloat;
+
+/**
+ * Handles properties/data collection, then passes the results to TaskbarView to render.
+ */
+public class TaskbarViewController {
+    private static final Runnable NO_OP = () -> { };
+
+    public static final int ALPHA_INDEX_HOME = 0;
+    public static final int ALPHA_INDEX_IME = 1;
+    public static final int ALPHA_INDEX_KEYGUARD = 2;
+    public static final int ALPHA_INDEX_STASH = 3;
+
+    private final TaskbarActivityContext mActivity;
+    private final TaskbarView mTaskbarView;
+    private final MultiValueAlpha mTaskbarIconAlpha;
+    private final AnimatedFloat mTaskbarIconScaleForStash = new AnimatedFloat(this::updateScale);
+    private final AnimatedFloat mTaskbarIconTranslationYForHome = new AnimatedFloat(
+            this::updateTranslationY);
+    private final AnimatedFloat mTaskbarIconTranslationYForStash = new AnimatedFloat(
+            this::updateTranslationY);
+
+    private final TaskbarModelCallbacks mModelCallbacks;
+
+    // Initialized in init.
+    private TaskbarControllers mControllers;
+
+    // Animation to align icons with Launcher, created lazily. This allows the controller to be
+    // active only during the animation and does not need to worry about layout changes.
+    private AnimatorPlaybackController mIconAlignControllerLazy = null;
+    private Runnable mOnControllerPreCreateCallback = NO_OP;
+
+    public TaskbarViewController(TaskbarActivityContext activity, TaskbarView taskbarView) {
+        mActivity = activity;
+        mTaskbarView = taskbarView;
+        mTaskbarIconAlpha = new MultiValueAlpha(mTaskbarView, 4);
+        mTaskbarIconAlpha.setUpdateVisibility(true);
+        mModelCallbacks = new TaskbarModelCallbacks(activity, mTaskbarView);
+    }
+
+    public void init(TaskbarControllers controllers) {
+        mControllers = controllers;
+        mTaskbarView.init(new TaskbarViewCallbacks());
+        mTaskbarView.getLayoutParams().height = mActivity.getDeviceProfile().taskbarSize;
+
+        mTaskbarIconScaleForStash.updateValue(1f);
+        LauncherAppState.getInstance(mActivity).getModel().addCallbacksAndLoad(mModelCallbacks);
+    }
+
+    public void onDestroy() {
+        LauncherAppState.getInstance(mActivity).getModel().removeCallbacks(mModelCallbacks);
+    }
+
+    public boolean areIconsVisible() {
+        return mTaskbarView.areIconsVisible();
+    }
+
+    public MultiValueAlpha getTaskbarIconAlpha() {
+        return mTaskbarIconAlpha;
+    }
+
+    /**
+     * Should be called when the IME visibility changes, so we can make Taskbar not steal touches.
+     */
+    public void setImeIsVisible(boolean isImeVisible) {
+        mTaskbarView.setTouchesEnabled(!isImeVisible);
+    }
+
+    /**
+     * Sets OnClickListener and OnLongClickListener for the given view.
+     */
+    public void setClickAndLongClickListenersForIcon(View icon) {
+        mTaskbarView.setClickAndLongClickListenersForIcon(icon);
+    }
+
+    public Rect getIconLayoutBounds() {
+        return mTaskbarView.getIconLayoutBounds();
+    }
+
+    public AnimatedFloat getTaskbarIconScaleForStash() {
+        return mTaskbarIconScaleForStash;
+    }
+
+    public AnimatedFloat getTaskbarIconTranslationYForStash() {
+        return mTaskbarIconTranslationYForStash;
+    }
+
+    /**
+     * Applies scale properties for the entire TaskbarView (rather than individual icons).
+     */
+    private void updateScale() {
+        float scale = mTaskbarIconScaleForStash.value;
+        mTaskbarView.setScaleX(scale);
+        mTaskbarView.setScaleY(scale);
+    }
+
+    private void updateTranslationY() {
+        mTaskbarView.setTranslationY(mTaskbarIconTranslationYForHome.value
+                + mTaskbarIconTranslationYForStash.value);
+    }
+
+    /**
+     * Sets the taskbar icon alignment relative to Launcher hotseat icons
+     * @param alignmentRatio [0, 1]
+     *                       0 => not aligned
+     *                       1 => fully aligned
+     */
+    public void setLauncherIconAlignment(float alignmentRatio, DeviceProfile launcherDp) {
+        if (mIconAlignControllerLazy == null) {
+            mIconAlignControllerLazy = createIconAlignmentController(launcherDp);
+        }
+        mIconAlignControllerLazy.setPlayFraction(alignmentRatio);
+        if (alignmentRatio <= 0 || alignmentRatio >= 1) {
+            // Cleanup lazy controller so that it is created again in next animation
+            mIconAlignControllerLazy = null;
+        }
+    }
+
+    /**
+     * Creates an animation for aligning the taskbar icons with the provided Launcher device profile
+     */
+    private AnimatorPlaybackController createIconAlignmentController(DeviceProfile launcherDp) {
+        mOnControllerPreCreateCallback.run();
+        PendingAnimation setter = new PendingAnimation(100);
+        Rect hotseatPadding = launcherDp.getHotseatLayoutPadding(mActivity);
+        float scaleUp = ((float) launcherDp.iconSizePx) / mActivity.getDeviceProfile().iconSizePx;
+        int hotseatCellSize =
+                (launcherDp.availableWidthPx - hotseatPadding.left - hotseatPadding.right)
+                        / launcherDp.numShownHotseatIcons;
+
+        int offsetY = launcherDp.getTaskbarOffsetY();
+        setter.setFloat(mTaskbarIconTranslationYForHome, VALUE, -offsetY, LINEAR);
+
+        int collapsedHeight = mActivity.getDeviceProfile().taskbarSize;
+        int expandedHeight = collapsedHeight + offsetY;
+        setter.addOnFrameListener(anim -> mActivity.setTaskbarWindowHeight(
+                anim.getAnimatedFraction() > 0 ? expandedHeight : collapsedHeight));
+
+        int count = mTaskbarView.getChildCount();
+        for (int i = 0; i < count; i++) {
+            View child = mTaskbarView.getChildAt(i);
+            ItemInfo info = (ItemInfo) child.getTag();
+            setter.setFloat(child, SCALE_PROPERTY, scaleUp, LINEAR);
+
+            float childCenter = (child.getLeft() + child.getRight()) / 2;
+            float hotseatIconCenter = hotseatPadding.left + hotseatCellSize * info.screenId
+                    + hotseatCellSize / 2;
+            setter.setFloat(child, VIEW_TRANSLATE_X, hotseatIconCenter - childCenter, LINEAR);
+        }
+
+        AnimatorPlaybackController controller = setter.createPlaybackController();
+        mOnControllerPreCreateCallback = () -> controller.setPlayFraction(0);
+        return controller;
+    }
+
+    /**
+     * Callbacks for {@link TaskbarView} to interact with its controller.
+     */
+    public class TaskbarViewCallbacks {
+        private final float mSquaredTouchSlop = Utilities.squaredTouchSlop(mActivity);
+
+        private float mDownX, mDownY;
+        private boolean mCanceledStashHint;
+
+        public View.OnClickListener getIconOnClickListener() {
+            return mActivity::onTaskbarIconClicked;
+        }
+
+        public View.OnLongClickListener getIconOnLongClickListener() {
+            return mControllers.taskbarDragController::startDragOnLongClick;
+        }
+
+        public View.OnLongClickListener getBackgroundOnLongClickListener() {
+            return view -> mControllers.taskbarStashController.updateAndAnimateIsStashedInApp(true);
+        }
+
+        public void onTouchEvent(MotionEvent motionEvent) {
+            final float x = motionEvent.getRawX();
+            final float y = motionEvent.getRawY();
+            switch (motionEvent.getAction()) {
+                case MotionEvent.ACTION_DOWN:
+                    mDownX = x;
+                    mDownY = y;
+                    mControllers.taskbarStashController.startStashHint(/* animateForward = */ true);
+                    mCanceledStashHint = false;
+                    break;
+                case MotionEvent.ACTION_MOVE:
+                    if (!mCanceledStashHint
+                            && squaredHypot(mDownX - x, mDownY - y) > mSquaredTouchSlop) {
+                        mControllers.taskbarStashController.startStashHint(
+                                /* animateForward= */ false);
+                        mCanceledStashHint = true;
+                    }
+                    break;
+                case MotionEvent.ACTION_UP:
+                case MotionEvent.ACTION_CANCEL:
+                    if (!mCanceledStashHint) {
+                        mControllers.taskbarStashController.startStashHint(
+                                /* animateForward= */ false);
+                    }
+                    break;
+            }
+        }
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/contextual/RotationButton.java b/quickstep/src/com/android/launcher3/taskbar/contextual/RotationButton.java
new file mode 100644
index 0000000..4093097
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/contextual/RotationButton.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.taskbar.contextual;
+
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.view.View;
+
+/**
+ * Interface of a rotation button that interacts {@link RotationButtonController}.
+ * This interface exists because of the two different styles of rotation button in Sysui,
+ * one in contextual for 3 button nav and a floating rotation button for gestural.
+ * Keeping the interface for eventual migration of floating button, so some methods are
+ * pass through to "super" while others are trivially implemented.
+ *
+ * Changes:
+ *  * Directly use AnimatedVectorDrawable instead of KeyButtonDrawable
+ */
+public interface RotationButton {
+    default void setRotationButtonController(RotationButtonController rotationButtonController) { }
+
+    default View getCurrentView() {
+        return null;
+    }
+    default void show() { }
+    default void hide() { }
+    default boolean isVisible() {
+        return false;
+    }
+
+    default void updateIcon(int lightIconColor, int darkIconColor) { }
+    default void setOnClickListener(View.OnClickListener onClickListener) { }
+    default void setOnHoverListener(View.OnHoverListener onHoverListener) { }
+    default AnimatedVectorDrawable getImageDrawable() {
+        return null;
+    }
+    default void setDarkIntensity(float darkIntensity) { }
+    default boolean acceptRotationProposal() {
+        return getCurrentView() != null;
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/contextual/RotationButtonController.java b/quickstep/src/com/android/launcher3/taskbar/contextual/RotationButtonController.java
new file mode 100644
index 0000000..99dc282
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/contextual/RotationButtonController.java
@@ -0,0 +1,512 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.taskbar.contextual;
+
+import static android.view.Display.DEFAULT_DISPLAY;
+
+import static com.android.internal.view.RotationPolicy.NATURAL_ROTATION;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
+import android.annotation.ColorInt;
+import android.annotation.DrawableRes;
+import android.annotation.SuppressLint;
+import android.app.StatusBarManager;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.RemoteException;
+import android.provider.Settings;
+import android.util.Log;
+import android.view.IRotationWatcher;
+import android.view.MotionEvent;
+import android.view.Surface;
+import android.view.View;
+import android.view.WindowInsetsController;
+import android.view.WindowManagerGlobal;
+import android.view.accessibility.AccessibilityManager;
+
+import com.android.internal.logging.UiEvent;
+import com.android.internal.logging.UiEventLogger;
+import com.android.internal.logging.UiEventLoggerImpl;
+import com.android.internal.view.RotationPolicy;
+import com.android.launcher3.R;
+import com.android.launcher3.util.DisplayController;
+import com.android.systemui.shared.recents.utilities.Utilities;
+import com.android.systemui.shared.recents.utilities.ViewRippler;
+import com.android.systemui.shared.system.ActivityManagerWrapper;
+import com.android.systemui.shared.system.TaskStackChangeListener;
+import com.android.systemui.shared.system.TaskStackChangeListeners;
+
+import java.util.Optional;
+
+/**
+ * Copied over from the SysUI equivalent class. Known issues/things not ported over
+ *  * When rotation button visible and in auto-hide mode, we ask auto-hide controller to
+ *    keep the navbar around longer. Will need to implement if we use auto-hide on taskbar
+ *
+ * Contains logic that deals with showing a rotate suggestion button with animation.
+ */
+public class RotationButtonController {
+
+    private static final String TAG = "StatusBar/RotationButtonController";
+    private static final int BUTTON_FADE_IN_OUT_DURATION_MS = 100;
+    private static final int NAVBAR_HIDDEN_PENDING_ICON_TIMEOUT_MS = 20000;
+
+    private static final int NUM_ACCEPTED_ROTATION_SUGGESTIONS_FOR_INTRODUCTION = 3;
+
+    private final Context mContext;
+    private final Handler mMainThreadHandler = new Handler(Looper.getMainLooper());
+    private final UiEventLogger mUiEventLogger = new UiEventLoggerImpl();
+    private final ViewRippler mViewRippler = new ViewRippler();
+    private final DisplayController mDisplayController;
+    private RotationButton mRotationButton;
+
+    private int mLastRotationSuggestion;
+    private boolean mPendingRotationSuggestion;
+    private boolean mHoveringRotationSuggestion;
+    private final AccessibilityManager mAccessibilityManager;
+    private final TaskStackListenerImpl mTaskStackListener;
+    private boolean mListenersRegistered = false;
+    private boolean mIsTaskbarShowing;
+    @SuppressLint("InlinedApi")
+    private @WindowInsetsController.Behavior
+    int mBehavior = WindowInsetsController.BEHAVIOR_DEFAULT;
+    private boolean mSkipOverrideUserLockPrefsOnce;
+    private final int mLightIconColor;
+    private final int mDarkIconColor;
+    private int mIconResId = R.drawable.ic_sysbar_rotate_button_ccw_start_90;
+
+    private final Runnable mRemoveRotationProposal =
+            () -> setRotateSuggestionButtonState(false /* visible */);
+    private final Runnable mCancelPendingRotationProposal =
+            () -> mPendingRotationSuggestion = false;
+    private Animator mRotateHideAnimator;
+
+
+    private final IRotationWatcher.Stub mRotationWatcher = new IRotationWatcher.Stub() {
+        @Override
+        public void onRotationChanged(final int rotation) {
+            // We need this to be scheduled as early as possible to beat the redrawing of
+            // window in response to the orientation change.
+            mMainThreadHandler.postAtFrontOfQueue(() -> {
+                // If the screen rotation changes while locked, potentially update lock to flow with
+                // new screen rotation and hide any showing suggestions.
+                if (isRotationLocked()) {
+                    if (shouldOverrideUserLockPrefs(rotation)) {
+                        setRotationLockedAtAngle(rotation);
+                    }
+                    setRotateSuggestionButtonState(false /* visible */, true /* forced */);
+                }
+            });
+        }
+    };
+
+    /**
+     * Determines if rotation suggestions disabled2 flag exists in flag
+     * @param disable2Flags see if rotation suggestion flag exists in this flag
+     * @return whether flag exists
+     */
+    static boolean hasDisable2RotateSuggestionFlag(int disable2Flags) {
+        return (disable2Flags & StatusBarManager.DISABLE2_ROTATE_SUGGESTIONS) != 0;
+    }
+
+    public RotationButtonController(Context context, @ColorInt int lightIconColor,
+            @ColorInt int darkIconColor) {
+        mContext = context;
+        mLightIconColor = lightIconColor;
+        mDarkIconColor = darkIconColor;
+
+        mAccessibilityManager = AccessibilityManager.getInstance(context);
+        mTaskStackListener = new TaskStackListenerImpl();
+        mDisplayController = DisplayController.INSTANCE.get(context);
+    }
+
+    public void setRotationButton(RotationButton rotationButton) {
+        mRotationButton = rotationButton;
+        mRotationButton.setRotationButtonController(this);
+        mRotationButton.setOnClickListener(this::onRotateSuggestionClick);
+        mRotationButton.setOnHoverListener(this::onRotateSuggestionHover);
+    }
+
+    public void init() {
+        registerListeners();
+        if (mDisplayController.getInfo().id != DEFAULT_DISPLAY) {
+            // Currently there is no accelerometer sensor on non-default display, disable fixed
+            // rotation for non-default display
+            onDisable2FlagChanged(StatusBarManager.DISABLE2_ROTATE_SUGGESTIONS);
+        }
+    }
+
+    public void onDestroy() {
+        unregisterListeners();
+    }
+
+    private void registerListeners() {
+        if (mListenersRegistered) {
+            return;
+        }
+
+        mListenersRegistered = true;
+        try {
+            WindowManagerGlobal.getWindowManagerService()
+                    .watchRotation(mRotationWatcher, mDisplayController.getInfo().id);
+        } catch (IllegalArgumentException e) {
+            mListenersRegistered = false;
+            Log.w(TAG, "RegisterListeners for the display failed");
+        } catch (RemoteException e) {
+            Log.e(TAG, "RegisterListeners caught a RemoteException", e);
+            return;
+        }
+
+        TaskStackChangeListeners.getInstance().registerTaskStackListener(mTaskStackListener);
+    }
+
+    void unregisterListeners() {
+        if (!mListenersRegistered) {
+            return;
+        }
+
+        mListenersRegistered = false;
+        try {
+            WindowManagerGlobal.getWindowManagerService().removeRotationWatcher(mRotationWatcher);
+        } catch (RemoteException e) {
+            Log.e(TAG, "UnregisterListeners caught a RemoteException", e);
+            return;
+        }
+
+        TaskStackChangeListeners.getInstance().unregisterTaskStackListener(mTaskStackListener);
+    }
+
+    void setRotationLockedAtAngle(int rotationSuggestion) {
+        RotationPolicy.setRotationLockAtAngle(mContext, true, rotationSuggestion);
+    }
+
+    public boolean isRotationLocked() {
+        return RotationPolicy.isRotationLocked(mContext);
+    }
+
+    public void setRotateSuggestionButtonState(boolean visible) {
+        setRotateSuggestionButtonState(visible, false /* force */);
+    }
+
+    void setRotateSuggestionButtonState(final boolean visible, final boolean force) {
+        // At any point the button can become invisible because an a11y service became active.
+        // Similarly, a call to make the button visible may be rejected because an a11y service is
+        // active. Must account for this.
+        // Rerun a show animation to indicate change but don't rerun a hide animation
+        if (!visible && !mRotationButton.isVisible()) return;
+
+        final View view = mRotationButton.getCurrentView();
+        if (view == null) return;
+
+        final AnimatedVectorDrawable currentDrawable = mRotationButton.getImageDrawable();
+        if (currentDrawable == null) return;
+
+        // Clear any pending suggestion flag as it has either been nullified or is being shown
+        mPendingRotationSuggestion = false;
+        mMainThreadHandler.removeCallbacks(mCancelPendingRotationProposal);
+
+        // Handle the visibility change and animation
+        if (visible) { // Appear and change (cannot force)
+            // Stop and clear any currently running hide animations
+            if (mRotateHideAnimator != null && mRotateHideAnimator.isRunning()) {
+                mRotateHideAnimator.cancel();
+            }
+            mRotateHideAnimator = null;
+
+            // Reset the alpha if any has changed due to hide animation
+            view.setAlpha(1f);
+
+            // Run the rotate icon's animation if it has one
+            currentDrawable.reset();
+            currentDrawable.start();
+
+            // TODO(b/187754252): No idea why this doesn't work. If we remove the "false"
+            //  we see the animation show the pressed state... but it only shows the first time.
+            if (!isRotateSuggestionIntroduced()) mViewRippler.start(view);
+
+            // Set visibility unless a11y service is active.
+            mRotationButton.show();
+        } else { // Hide
+            mViewRippler.stop(); // Prevent any pending ripples, force hide or not
+
+            if (force) {
+                // If a hide animator is running stop it and make invisible
+                if (mRotateHideAnimator != null && mRotateHideAnimator.isRunning()) {
+                    mRotateHideAnimator.pause();
+                }
+                mRotationButton.hide();
+                return;
+            }
+
+            // Don't start any new hide animations if one is running
+            if (mRotateHideAnimator != null && mRotateHideAnimator.isRunning()) return;
+
+            ObjectAnimator fadeOut = ObjectAnimator.ofFloat(view, "alpha", 0f);
+            fadeOut.setDuration(BUTTON_FADE_IN_OUT_DURATION_MS);
+            fadeOut.setInterpolator(LINEAR);
+            fadeOut.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    mRotationButton.hide();
+                }
+            });
+
+            mRotateHideAnimator = fadeOut;
+            fadeOut.start();
+        }
+    }
+
+    void setDarkIntensity(float darkIntensity) {
+        mRotationButton.setDarkIntensity(darkIntensity);
+    }
+
+    public void onRotationProposal(int rotation, boolean isValid) {
+        int windowRotation = mDisplayController.getInfo().rotation;
+
+        if (!mRotationButton.acceptRotationProposal()) {
+            return;
+        }
+
+        // This method will be called on rotation suggestion changes even if the proposed rotation
+        // is not valid for the top app. Use invalid rotation choices as a signal to remove the
+        // rotate button if shown.
+        if (!isValid) {
+            setRotateSuggestionButtonState(false /* visible */);
+            return;
+        }
+
+        // If window rotation matches suggested rotation, remove any current suggestions
+        if (rotation == windowRotation) {
+            mMainThreadHandler.removeCallbacks(mRemoveRotationProposal);
+            setRotateSuggestionButtonState(false /* visible */);
+            return;
+        }
+
+        // Prepare to show the navbar icon by updating the icon style to change anim params
+        mLastRotationSuggestion = rotation; // Remember rotation for click
+        final boolean rotationCCW = Utilities.isRotationAnimationCCW(windowRotation, rotation);
+        if (windowRotation == Surface.ROTATION_0 || windowRotation == Surface.ROTATION_180) {
+            mIconResId = rotationCCW
+                    ? R.drawable.ic_sysbar_rotate_button_ccw_start_90
+                    : R.drawable.ic_sysbar_rotate_button_cw_start_90;
+        } else { // 90 or 270
+            mIconResId = rotationCCW
+                    ? R.drawable.ic_sysbar_rotate_button_ccw_start_0
+                    : R.drawable.ic_sysbar_rotate_button_ccw_start_0;
+        }
+        mRotationButton.updateIcon(mLightIconColor, mDarkIconColor);
+
+        if (canShowRotationButton()) {
+            // The navbar is visible / it's in visual immersive mode, so show the icon right away
+            showAndLogRotationSuggestion();
+        } else {
+            // If the navbar isn't shown, flag the rotate icon to be shown should the navbar become
+            // visible given some time limit.
+            mPendingRotationSuggestion = true;
+            mMainThreadHandler.removeCallbacks(mCancelPendingRotationProposal);
+            mMainThreadHandler.postDelayed(mCancelPendingRotationProposal,
+                    NAVBAR_HIDDEN_PENDING_ICON_TIMEOUT_MS);
+        }
+    }
+
+    public void onDisable2FlagChanged(int state2) {
+        final boolean rotateSuggestionsDisabled = hasDisable2RotateSuggestionFlag(state2);
+        if (rotateSuggestionsDisabled) onRotationSuggestionsDisabled();
+    }
+
+    public void onBehaviorChanged(int displayId, @WindowInsetsController.Behavior int behavior) {
+        if (mDisplayController.getInfo().id != displayId) {
+            return;
+        }
+
+        if (mBehavior != behavior) {
+            mBehavior = behavior;
+            showPendingRotationButtonIfNeeded();
+        }
+    }
+
+    public void onTaskBarVisibilityChange(boolean showing) {
+        if (mIsTaskbarShowing != showing) {
+            mIsTaskbarShowing = showing;
+            showPendingRotationButtonIfNeeded();
+        }
+    }
+
+    private void showPendingRotationButtonIfNeeded() {
+        if (canShowRotationButton() && mPendingRotationSuggestion) {
+            showAndLogRotationSuggestion();
+        }
+    }
+
+    /** Return true when either the task bar is visible or it's in visual immersive mode. */
+    @SuppressLint("InlinedApi")
+    private boolean canShowRotationButton() {
+        return mIsTaskbarShowing || mBehavior == WindowInsetsController.BEHAVIOR_DEFAULT;
+    }
+
+    public @DrawableRes
+    int getIconResId() {
+        return mIconResId;
+    }
+
+    public @ColorInt int getLightIconColor() {
+        return mLightIconColor;
+    }
+
+    public @ColorInt int getDarkIconColor() {
+        return mDarkIconColor;
+    }
+
+    private void onRotateSuggestionClick(View v) {
+        mUiEventLogger.log(RotationButtonEvent.ROTATION_SUGGESTION_ACCEPTED);
+        incrementNumAcceptedRotationSuggestionsIfNeeded();
+        setRotationLockedAtAngle(mLastRotationSuggestion);
+    }
+
+    private boolean onRotateSuggestionHover(View v, MotionEvent event) {
+        final int action = event.getActionMasked();
+        mHoveringRotationSuggestion = (action == MotionEvent.ACTION_HOVER_ENTER)
+                || (action == MotionEvent.ACTION_HOVER_MOVE);
+        rescheduleRotationTimeout(true /* reasonHover */);
+        return false; // Must return false so a11y hover events are dispatched correctly.
+    }
+
+    private void onRotationSuggestionsDisabled() {
+        // Immediately hide the rotate button and clear any planned removal
+        setRotateSuggestionButtonState(false /* visible */, true /* force */);
+        mMainThreadHandler.removeCallbacks(mRemoveRotationProposal);
+    }
+
+    private void showAndLogRotationSuggestion() {
+        setRotateSuggestionButtonState(true /* visible */);
+        rescheduleRotationTimeout(false /* reasonHover */);
+        mUiEventLogger.log(RotationButtonEvent.ROTATION_SUGGESTION_SHOWN);
+    }
+
+    /**
+     * Makes {@link #shouldOverrideUserLockPrefs} always return {@code false} once. It is used to
+     * avoid losing original user rotation when display rotation is changed by entering the fixed
+     * orientation overview.
+     */
+    void setSkipOverrideUserLockPrefsOnce() {
+        mSkipOverrideUserLockPrefsOnce = true;
+    }
+
+    private boolean shouldOverrideUserLockPrefs(final int rotation) {
+        if (mSkipOverrideUserLockPrefsOnce) {
+            mSkipOverrideUserLockPrefsOnce = false;
+            return false;
+        }
+        // Only override user prefs when returning to the natural rotation (normally portrait).
+        // Don't let apps that force landscape or 180 alter user lock.
+        return rotation == NATURAL_ROTATION;
+    }
+
+    private void rescheduleRotationTimeout(final boolean reasonHover) {
+        // May be called due to a new rotation proposal or a change in hover state
+        if (reasonHover) {
+            // Don't reschedule if a hide animator is running
+            if (mRotateHideAnimator != null && mRotateHideAnimator.isRunning()) return;
+            // Don't reschedule if not visible
+            if (!mRotationButton.isVisible()) return;
+        }
+
+        // Stop any pending removal
+        mMainThreadHandler.removeCallbacks(mRemoveRotationProposal);
+        // Schedule timeout
+        mMainThreadHandler.postDelayed(mRemoveRotationProposal,
+                computeRotationProposalTimeout());
+    }
+
+    private int computeRotationProposalTimeout() {
+        return mAccessibilityManager.getRecommendedTimeoutMillis(
+                mHoveringRotationSuggestion ? 16000 : 5000,
+                AccessibilityManager.FLAG_CONTENT_CONTROLS);
+    }
+
+    private boolean isRotateSuggestionIntroduced() {
+        ContentResolver cr = mContext.getContentResolver();
+        return Settings.Secure.getInt(cr, Settings.Secure.NUM_ROTATION_SUGGESTIONS_ACCEPTED, 0)
+                >= NUM_ACCEPTED_ROTATION_SUGGESTIONS_FOR_INTRODUCTION;
+    }
+
+    private void incrementNumAcceptedRotationSuggestionsIfNeeded() {
+        // Get the number of accepted suggestions
+        ContentResolver cr = mContext.getContentResolver();
+        final int numSuggestions = Settings.Secure.getInt(cr,
+                Settings.Secure.NUM_ROTATION_SUGGESTIONS_ACCEPTED, 0);
+
+        // Increment the number of accepted suggestions only if it would change intro mode
+        if (numSuggestions < NUM_ACCEPTED_ROTATION_SUGGESTIONS_FOR_INTRODUCTION) {
+            Settings.Secure.putInt(cr, Settings.Secure.NUM_ROTATION_SUGGESTIONS_ACCEPTED,
+                    numSuggestions + 1);
+        }
+    }
+
+    private class TaskStackListenerImpl extends TaskStackChangeListener {
+        // Invalidate any rotation suggestion on task change or activity orientation change
+        // Note: all callbacks happen on main thread
+
+        @Override
+        public void onTaskStackChanged() {
+            setRotateSuggestionButtonState(false /* visible */);
+        }
+
+        @Override
+        public void onTaskRemoved(int taskId) {
+            setRotateSuggestionButtonState(false /* visible */);
+        }
+
+        @Override
+        public void onTaskMovedToFront(int taskId) {
+            setRotateSuggestionButtonState(false /* visible */);
+        }
+
+        @Override
+        public void onActivityRequestedOrientationChanged(int taskId, int requestedOrientation) {
+            // Only hide the icon if the top task changes its requestedOrientation
+            // Launcher can alter its requestedOrientation while it's not on top, don't hide on this
+            Optional.ofNullable(ActivityManagerWrapper.getInstance())
+                    .map(ActivityManagerWrapper::getRunningTask)
+                    .ifPresent(a -> {
+                        if (a.id == taskId) setRotateSuggestionButtonState(false /* visible */);
+                    });
+        }
+    }
+
+    enum RotationButtonEvent implements UiEventLogger.UiEventEnum {
+        @UiEvent(doc = "The rotation button was shown")
+        ROTATION_SUGGESTION_SHOWN(206),
+        @UiEvent(doc = "The rotation button was clicked")
+        ROTATION_SUGGESTION_ACCEPTED(207);
+
+        private final int mId;
+        RotationButtonEvent(int id) {
+            mId = id;
+        }
+        @Override public int getId() {
+            return mId;
+        }
+    }
+}
+
diff --git a/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java b/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java
index 76a5782..85943b6 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java
@@ -17,10 +17,15 @@
 package com.android.launcher3.uioverrides;
 
 import android.app.Person;
+import android.content.Context;
 import android.content.pm.ShortcutInfo;
+import android.content.res.Resources;
 import android.view.Display;
 
+import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.quickstep.SysUINavigationMode;
+import com.android.quickstep.SysUINavigationMode.Mode;
 
 public class ApiWrapper {
 
@@ -37,4 +42,18 @@
     public static boolean isInternalDisplay(Display display) {
         return display.getType() == Display.TYPE_INTERNAL;
     }
+
+    /**
+     * Returns the minimum space that should be left empty at the end of hotseat
+     */
+    public static int getHotseatEndOffset(Context context) {
+        if (SysUINavigationMode.INSTANCE.get(context).getMode() == Mode.THREE_BUTTONS) {
+            Resources res = context.getResources();
+            return 2 * res.getDimensionPixelSize(R.dimen.taskbar_nav_buttons_spacing)
+                    + 3 * res.getDimensionPixelSize(R.dimen.taskbar_nav_buttons_size);
+        } else {
+            return 0;
+        }
+
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java b/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java
index 1d52315..d74b6c5 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java
@@ -17,6 +17,8 @@
 package com.android.launcher3.uioverrides;
 
 import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE_IN_OUT;
+import static com.android.launcher3.anim.Interpolators.FINAL_FRAME;
+import static com.android.launcher3.anim.Interpolators.INSTANT;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_MODAL;
@@ -112,8 +114,9 @@
                 mRecentsView, getTaskModalnessProperty(),
                 toState.getOverviewModalness(),
                 config.getInterpolator(ANIM_OVERVIEW_MODAL, LINEAR));
-        setter.setFloat(mRecentsView, RECENTS_GRID_PROGRESS,
-                toState.displayOverviewTasksAsGrid(mLauncher.getDeviceProfile()) ? 1f : 0f, LINEAR);
+        boolean showAsGrid = toState.displayOverviewTasksAsGrid(mLauncher.getDeviceProfile());
+        setter.setFloat(mRecentsView, RECENTS_GRID_PROGRESS, showAsGrid ? 1f : 0f,
+                showAsGrid ? INSTANT : FINAL_FRAME);
     }
 
     abstract FloatProperty getTaskModalnessProperty();
diff --git a/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java b/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java
index c115bbb..c46809a 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java
@@ -17,21 +17,17 @@
 package com.android.launcher3.uioverrides;
 
 import android.annotation.TargetApi;
-import android.content.Context;
 import android.os.Build;
 import android.provider.DeviceConfig;
 
 import com.android.launcher3.config.FeatureFlags.DebugFlag;
 
-import java.util.ArrayList;
-
 @TargetApi(Build.VERSION_CODES.P)
 public class DeviceFlag extends DebugFlag {
 
     public static final String NAMESPACE_LAUNCHER = "launcher";
 
     private final boolean mDefaultValueInCode;
-    ArrayList<Runnable> mListeners;
 
     public DeviceFlag(String key, boolean defaultValue, String description) {
         super(key, getDeviceValue(key, defaultValue), description);
@@ -44,53 +40,11 @@
     }
 
     @Override
-    public void initialize(Context context) {
-        super.initialize(context);
-        if (mListeners == null) {
-            mListeners = new ArrayList<>();
-            registerDeviceConfigChangedListener(context);
-        }
-    }
-
-    @Override
-    public void addChangeListener(Context context, Runnable r) {
-        if (mListeners == null) {
-            initialize(context);
-        }
-        mListeners.add(r);
-    }
-
-    @Override
-    public void removeChangeListener(Runnable r) {
-        if (mListeners == null) {
-            return;
-        }
-        mListeners.remove(r);
-    }
-
-    @Override
     public boolean get() {
         // Override this method in order to let Robolectric ShadowDeviceFlag to stub it.
         return super.get();
     }
 
-    private void registerDeviceConfigChangedListener(Context context) {
-        DeviceConfig.addOnPropertiesChangedListener(
-                NAMESPACE_LAUNCHER,
-                context.getMainExecutor(),
-                properties -> {
-                    if (!NAMESPACE_LAUNCHER.equals(properties.getNamespace())
-                            || !properties.getKeyset().contains(key)) {
-                        return;
-                    }
-                    defaultValue = getDeviceValue(key, mDefaultValueInCode);
-                    initialize(context);
-                    for (Runnable r: mListeners) {
-                        r.run();
-                    }
-                });
-    }
-
     protected static boolean getDeviceValue(String key, boolean defaultValue) {
         return DeviceConfig.getBoolean(NAMESPACE_LAUNCHER, key, defaultValue);
     }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index ec9893c..069af96 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -17,7 +17,6 @@
 
 import static android.view.accessibility.AccessibilityEvent.TYPE_VIEW_FOCUSED;
 
-import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_HOTSEAT;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_APPLICATION;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
@@ -37,9 +36,13 @@
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
+import android.hardware.SensorManager;
+import android.hardware.devicestate.DeviceStateManager;
 import android.view.HapticFeedbackConstants;
 import android.view.View;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.BaseQuickstepLauncher;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
@@ -55,7 +58,6 @@
 import com.android.launcher3.logging.StatsLogManager.StatsLogger;
 import com.android.launcher3.model.BgDataModel.FixedContainerItems;
 import com.android.launcher3.model.data.ItemInfo;
-import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.statemanager.StateManager.AtomicAnimationFactory;
 import com.android.launcher3.uioverrides.states.QuickstepAtomicAnimationFactory;
@@ -77,14 +79,18 @@
 import com.android.quickstep.SysUINavigationMode.Mode;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskUtils;
+import com.android.quickstep.util.LauncherUnfoldAnimationController;
+import com.android.quickstep.util.ProxyScreenStatusProvider;
 import com.android.quickstep.util.QuickstepOnboardingPrefs;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
+import com.android.unfold.UnfoldTransitionFactory;
+import com.android.unfold.UnfoldTransitionProgressProvider;
+import com.android.unfold.config.UnfoldTransitionConfig;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.util.ArrayList;
-import java.util.List;
 import java.util.Objects;
 import java.util.stream.Stream;
 
@@ -100,10 +106,51 @@
     private FixedContainerItems mAllAppsPredictions;
     private HotseatPredictionController mHotseatPredictionController;
 
+    @Nullable
+    private LauncherUnfoldAnimationController mLauncherUnfoldAnimationController;
+
     @Override
     protected void setupViews() {
         super.setupViews();
         mHotseatPredictionController = new HotseatPredictionController(this);
+
+        final UnfoldTransitionConfig config = UnfoldTransitionFactory.createConfig(this);
+        if (config.isEnabled()) {
+            final UnfoldTransitionProgressProvider unfoldTransitionProgressProvider =
+                    UnfoldTransitionFactory.createUnfoldTransitionProgressProvider(
+                            this,
+                            config,
+                            ProxyScreenStatusProvider.INSTANCE,
+                            getSystemService(DeviceStateManager.class),
+                            getSystemService(SensorManager.class),
+                            getMainThreadHandler(),
+                            getMainExecutor()
+                    );
+
+            mLauncherUnfoldAnimationController = new LauncherUnfoldAnimationController(
+                    this,
+                    getWindowManager(),
+                    unfoldTransitionProgressProvider
+            );
+        }
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        if (mLauncherUnfoldAnimationController != null) {
+            mLauncherUnfoldAnimationController.onResume();
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        if (mLauncherUnfoldAnimationController != null) {
+            mLauncherUnfoldAnimationController.onPause();
+        }
+
+        super.onPause();
     }
 
     @Override
@@ -231,18 +278,13 @@
     }
 
     @Override
-    public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) {
-        super.bindWorkspaceItemsChanged(updated);
-        if (getTaskbarUIController() != null && updated.stream()
-                .filter(w -> w.container == CONTAINER_HOTSEAT).findFirst().isPresent()) {
-            getTaskbarUIController().onHotseatUpdated();
-        }
-    }
-
-    @Override
     public void onDestroy() {
         super.onDestroy();
         mHotseatPredictionController.destroy();
+
+        if (mLauncherUnfoldAnimationController != null) {
+            mLauncherUnfoldAnimationController.onDestroy();
+        }
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
index 996d36a..1f744e1 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
@@ -18,13 +18,11 @@
 import static com.android.launcher3.LauncherState.CLEAR_ALL_BUTTON;
 import static com.android.launcher3.LauncherState.OVERVIEW_ACTIONS;
 import static com.android.launcher3.LauncherState.OVERVIEW_SPLIT_SELECT;
-import static com.android.launcher3.LauncherState.SPLIT_PLACHOLDER_VIEW;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_ACTIONS_FADE;
 import static com.android.quickstep.views.RecentsView.CONTENT_ALPHA;
 import static com.android.quickstep.views.RecentsView.FULLSCREEN_PROGRESS;
 import static com.android.quickstep.views.RecentsView.TASK_MODALNESS;
-import static com.android.quickstep.views.SplitPlaceholderView.ALPHA_FLOAT;
 import static com.android.quickstep.views.TaskView.FLAG_UPDATE_ALL;
 
 import android.annotation.TargetApi;
@@ -106,16 +104,10 @@
         float clearAllButtonAlpha = state.areElementsVisible(mLauncher, CLEAR_ALL_BUTTON) ? 1 : 0;
         propertySetter.setFloat(mRecentsView.getClearAllButton(), ClearAllButton.VISIBILITY_ALPHA,
                 clearAllButtonAlpha, LINEAR);
-        float overviewButtonAlpha = state.areElementsVisible(mLauncher, OVERVIEW_ACTIONS)
-                && mRecentsView.shouldShowOverviewActionsForState(state) ? 1 : 0;
+        float overviewButtonAlpha = state.areElementsVisible(mLauncher, OVERVIEW_ACTIONS) ? 1 : 0;
         propertySetter.setFloat(mLauncher.getActionsView().getVisibilityAlpha(),
                 MultiValueAlpha.VALUE, overviewButtonAlpha, config.getInterpolator(
                         ANIM_OVERVIEW_ACTIONS_FADE, LINEAR));
-
-        float splitPlaceholderAlpha = state.areElementsVisible(mLauncher, SPLIT_PLACHOLDER_VIEW) ?
-                0.85f : 0;
-        propertySetter.setFloat(mRecentsView.getSplitPlaceholder(), ALPHA_FLOAT,
-                splitPlaceholderAlpha, LINEAR);
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
index d14e8ef..0e12e30 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
@@ -14,35 +14,18 @@
 
 package com.android.launcher3.uioverrides.plugins;
 
-import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
-
 import android.content.Context;
-import android.os.Looper;
 
 import com.android.launcher3.Utilities;
 import com.android.systemui.shared.plugins.PluginInitializer;
 
 public class PluginInitializerImpl implements PluginInitializer {
     @Override
-    public Looper getBgLooper() {
-        return MODEL_EXECUTOR.getLooper();
-    }
-
-    @Override
-    public void onPluginManagerInit() {
-    }
-
-    @Override
-    public String[] getWhitelistedPlugins(Context context) {
+    public String[] getPrivilegedPlugins(Context context) {
         return new String[0];
     }
 
     @Override
-    public PluginEnablerImpl getPluginEnabler(Context context) {
-        return new PluginEnablerImpl(context);
-    }
-
-    @Override
     public void handleWtfs() {
     }
 
diff --git a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java
index 2e422b7..e12f42e 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java
@@ -16,6 +16,9 @@
 
 import static android.content.pm.PackageManager.MATCH_DISABLED_COMPONENTS;
 
+import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
+
+import android.app.NotificationManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -24,13 +27,16 @@
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.systemui.plugins.Plugin;
 import com.android.systemui.plugins.PluginListener;
+import com.android.systemui.shared.plugins.PluginInstanceManager;
 import com.android.systemui.shared.plugins.PluginManager;
 import com.android.systemui.shared.plugins.PluginManagerImpl;
 import com.android.systemui.shared.plugins.PluginPrefs;
 
 import java.io.PrintWriter;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
 
 public class PluginManagerWrapper {
@@ -47,8 +53,16 @@
     private PluginManagerWrapper(Context c) {
         mContext = c;
         PluginInitializerImpl pluginInitializer  = new PluginInitializerImpl();
-        mPluginManager = new PluginManagerImpl(c, pluginInitializer);
-        mPluginEnabler = pluginInitializer.getPluginEnabler(c);
+        mPluginEnabler = new PluginEnablerImpl(c);
+        PluginInstanceManager.Factory instanceManagerFactory = new PluginInstanceManager.Factory(
+                c, c.getPackageManager(), c.getMainExecutor(), MODEL_EXECUTOR, pluginInitializer,
+                c.getSystemService(NotificationManager.class), mPluginEnabler,
+                Arrays.asList(pluginInitializer.getPrivilegedPlugins(c)));
+
+        mPluginManager = new PluginManagerImpl(c, instanceManagerFactory,
+                pluginInitializer.isDebuggable(),
+                Optional.ofNullable(Thread.getDefaultUncaughtExceptionHandler()), mPluginEnabler,
+                new PluginPrefs(c), Arrays.asList(pluginInitializer.getPrivilegedPlugins(c)));
     }
 
     public PluginEnablerImpl getPluginEnabler() {
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
index fe5a347..4984b95 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
@@ -23,6 +23,7 @@
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
 import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.quickstep.util.LayoutUtils;
 import com.android.quickstep.views.RecentsView;
@@ -89,6 +90,10 @@
 
     @Override
     public int getWorkspaceScrimColor(Launcher launcher) {
+        DeviceProfile dp = launcher.getDeviceProfile();
+        if (dp.isTaskbarPresentInApps) {
+            return launcher.getColor(R.color.taskbar_background);
+        }
         return Color.TRANSPARENT;
     }
 
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
index 8c128c8..1302ac0 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -28,7 +28,6 @@
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
 import com.android.launcher3.Workspace;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.util.Themes;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.util.LayoutUtils;
@@ -83,16 +82,6 @@
     }
 
     @Override
-    public float getTaskbarScale(Launcher launcher) {
-        return 1f;
-    }
-
-    @Override
-    public float getTaskbarTranslationY(Launcher launcher) {
-        return 0f;
-    }
-
-    @Override
     public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
         return new PageAlphaProvider(DEACCEL_2) {
             @Override
@@ -114,7 +103,7 @@
 
     @Override
     public boolean displayOverviewTasksAsGrid(DeviceProfile deviceProfile) {
-        return deviceProfile.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get();
+        return deviceProfile.overviewShowAsGrid;
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
index 6968494..1882a0c 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
@@ -43,7 +43,7 @@
     @Override
     public float getSplitSelectTranslation(Launcher launcher) {
         RecentsView recentsView = launcher.getOverviewPanel();
-        int splitPosition = recentsView.getSplitPlaceholder().getSplitController()
+        int splitPosition = recentsView.getSplitPlaceholder()
                 .getActiveSplitPositionOption().mStagePosition;
         if (!recentsView.shouldShiftThumbnailsForSplitSelect(splitPosition)) {
             return 0f;
diff --git a/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java b/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java
index 180af0b..0603ba5 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/TaskViewTouchController.java
@@ -34,7 +34,6 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.anim.PendingAnimation;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.touch.BaseSwipeDetector;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.touch.SingleAxisSwipeDetector;
@@ -158,26 +157,21 @@
                         mTaskBeingDragged = view;
                         int upDirection = mRecentsView.getPagedOrientationHandler()
                                 .getUpDirection(mIsRtl);
-                        if (!SysUINavigationMode.getMode(mActivity).hasGestures || (
-                                mActivity.getDeviceProfile().isTablet
-                                        && FeatureFlags.ENABLE_OVERVIEW_GRID.get())) {
-                            // Don't allow swipe down to open if we don't support swipe up
-                            // to enter overview, or when grid layout is enabled.
-                            directionsToDetectScroll = upDirection;
-                            mAllowGoingUp = true;
-                            mAllowGoingDown = false;
-                        } else {
-                            // The task can be dragged up to dismiss it,
-                            // and down to open if it's the current page.
-                            mAllowGoingUp = true;
-                            if (i == mRecentsView.getCurrentPage()) {
-                                mAllowGoingDown = true;
-                                directionsToDetectScroll = DIRECTION_BOTH;
-                            } else {
-                                mAllowGoingDown = false;
-                                directionsToDetectScroll = upDirection;
-                            }
-                        }
+
+                        // The task can be dragged up to dismiss it
+                        mAllowGoingUp = true;
+
+                        // The task can be dragged down to open it if:
+                        // - It's the current page
+                        // - We support gestures to enter overview
+                        // - It's the focused task if in grid view
+                        // - The task is snapped
+                        mAllowGoingDown = i == mRecentsView.getCurrentPage()
+                                && SysUINavigationMode.getMode(mActivity).hasGestures
+                                && (!mRecentsView.showAsGrid() || mTaskBeingDragged.isFocusedTask())
+                                && mRecentsView.isTaskSnapped(i);
+
+                        directionsToDetectScroll = mAllowGoingDown ? DIRECTION_BOTH : upDirection;
                         break;
                     }
                 }
@@ -233,7 +227,8 @@
         if (goingUp) {
             currentInterpolator = Interpolators.LINEAR;
             pa = mRecentsView.createTaskDismissAnimation(mTaskBeingDragged,
-                    true /* animateTaskView */, true /* removeTask */, maxDuration);
+                    true /* animateTaskView */, true /* removeTask */, maxDuration,
+                    false /* dismissingForSplitSelection*/);
 
             mEndDisplacement = -secondaryTaskDimension;
         } else {
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index ac1772c..fe16b33 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -99,6 +99,7 @@
 import com.android.quickstep.util.AnimatorControllerWithResistance;
 import com.android.quickstep.util.InputConsumerProxy;
 import com.android.quickstep.util.InputProxyHandlerFactory;
+import com.android.quickstep.util.LauncherSplitScreenListener;
 import com.android.quickstep.util.MotionPauseDetector;
 import com.android.quickstep.util.ProtoTracer;
 import com.android.quickstep.util.RecentsOrientedState;
@@ -106,6 +107,7 @@
 import com.android.quickstep.util.StaggeredWorkspaceAnim;
 import com.android.quickstep.util.SurfaceTransactionApplier;
 import com.android.quickstep.util.SwipePipToHomeAnimator;
+import com.android.quickstep.util.TaskViewSimulator;
 import com.android.quickstep.util.TransformParams;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
@@ -212,6 +214,8 @@
 
     public static final long RECENTS_ATTACH_DURATION = 300;
 
+    private static final float MAX_QUICK_SWITCH_RECENTS_SCALE_PROGRESS = 0.07f;
+
     /**
      * Used as the page index for logging when we return to the last task at the end of the gesture.
      */
@@ -220,7 +224,7 @@
     protected final TaskAnimationManager mTaskAnimationManager;
 
     // Either RectFSpringAnim (if animating home) or ObjectAnimator (from mCurrentShift) otherwise
-    private RunningWindowAnim mRunningWindowAnim;
+    private RunningWindowAnim[] mRunningWindowAnim;
     // Possible second animation running at the same time as mRunningWindowAnim
     private Animator mParallelRunningAnim;
     private boolean mIsMotionPaused;
@@ -251,6 +255,13 @@
 
     private SwipePipToHomeAnimator mSwipePipToHomeAnimator;
     protected boolean mIsSwipingPipToHome;
+    // TODO(b/195473090) no split PIP for now, remove once we have more clarity
+    //  can try to have RectFSpringAnim evaluate multiple rects at once
+    private final SwipePipToHomeAnimator[] mSwipePipToHomeAnimators =
+            new SwipePipToHomeAnimator[2];
+
+    // Interpolate RecentsView scale from start of quick switch scroll until this scroll threshold
+    private final float mQuickSwitchScaleScrollThreshold;
 
     public AbsSwipeUpHandler(Context context, RecentsAnimationDeviceState deviceState,
             TaskAnimationManager taskAnimationManager, GestureState gestureState,
@@ -267,6 +278,8 @@
         mTaskAnimationManager = taskAnimationManager;
         mTouchTimeMs = touchTimeMs;
         mContinuingLastGesture = continuingLastGesture;
+        mQuickSwitchScaleScrollThreshold = context.getResources().getDimension(
+                R.dimen.quick_switch_scaling_scroll_threshold);
 
         initAfterSubclassConstructor();
         initStateCallbacks();
@@ -419,7 +432,8 @@
         // RecentsView never updates the display rotation until swipe-up, force update
         // RecentsOrientedState before passing to TaskViewSimulator.
         mRecentsView.updateRecentsRotation();
-        mTaskViewSimulator.setOrientationState(mRecentsView.getPagedViewOrientedState());
+        runActionOnRemoteHandles(remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator
+                .setOrientationState(mRecentsView.getPagedViewOrientedState()));
 
         // If we've already ended the gesture and are going home, don't prepare recents UI,
         // as that will set the state as BACKGROUND_APP, overriding the animation to NORMAL.
@@ -512,7 +526,21 @@
     }
 
     protected void notifyGestureAnimationStartToRecents() {
-        mRecentsView.onGestureAnimationStart(mGestureState.getRunningTask());
+        ActivityManager.RunningTaskInfo[] runningTasks;
+        if (mIsSwipeForStagedSplit) {
+            int[] splitTaskIds =
+                    LauncherSplitScreenListener.INSTANCE.getNoCreate().getSplitTaskIds();
+            runningTasks = new ActivityManager.RunningTaskInfo[splitTaskIds.length];
+            for (int i = 0; i < splitTaskIds.length; i++) {
+                int taskId = splitTaskIds[i];
+                ActivityManager.RunningTaskInfo rti = new ActivityManager.RunningTaskInfo();
+                rti.taskId = taskId;
+                runningTasks[i] = rti;
+            }
+        } else {
+            runningTasks = new ActivityManager.RunningTaskInfo[]{mGestureState.getRunningTask()};
+        }
+        mRecentsView.onGestureAnimationStart(runningTasks);
     }
 
     private void launcherFrameDrawn() {
@@ -539,7 +567,7 @@
             @Override
             public void onMotionPauseDetected() {
                 mHasMotionEverBeenPaused = true;
-                maybeUpdateRecentsAttachedState();
+                maybeUpdateRecentsAttachedState(true/* animate */, true/* moveFocusedTask */);
                 performHapticFeedback();
             }
 
@@ -550,18 +578,24 @@
         };
     }
 
-    public void maybeUpdateRecentsAttachedState() {
+    private void maybeUpdateRecentsAttachedState() {
         maybeUpdateRecentsAttachedState(true /* animate */);
     }
 
+    private void maybeUpdateRecentsAttachedState(boolean animate) {
+        maybeUpdateRecentsAttachedState(animate, false /* moveFocusedTask */);
+    }
+
     /**
      * Determines whether to show or hide RecentsView. The window is always
      * synchronized with its corresponding TaskView in RecentsView, so if
      * RecentsView is shown, it will appear to be attached to the window.
      *
      * Note this method has no effect unless the navigation mode is NO_BUTTON.
+     * @param animate whether to animate when attaching RecentsView
+     * @param moveFocusedTask whether to move focused task to front when attaching
      */
-    private void maybeUpdateRecentsAttachedState(boolean animate) {
+    private void maybeUpdateRecentsAttachedState(boolean animate, boolean moveFocusedTask) {
         if (!mDeviceState.isFullyGesturalNavMode() || mRecentsView == null) {
             return;
         }
@@ -580,6 +614,12 @@
         } else {
             recentsAttachedToAppWindow = mHasMotionEverBeenPaused || mIsLikelyToStartNewTask;
         }
+        if (moveFocusedTask && !mAnimationFactory.hasRecentsEverAttachedToAppWindow()
+                && recentsAttachedToAppWindow) {
+            // Only move focused task if RecentsView has never been attached before, to avoid
+            // TaskView jumping to new position as we move the tasks.
+            mRecentsView.moveFocusedTaskToFront();
+        }
         mAnimationFactory.setRecentsAttachedToAppWindow(recentsAttachedToAppWindow, animate);
 
         // Reapply window transform throughout the attach animation, as the animation affects how
@@ -587,15 +627,15 @@
         if (animate) {
             ValueAnimator reapplyWindowTransformAnim = ValueAnimator.ofFloat(0, 1);
             reapplyWindowTransformAnim.addUpdateListener(anim -> {
-                if (mRunningWindowAnim == null) {
-                    applyWindowTransform();
+                if (mRunningWindowAnim == null || mRunningWindowAnim.length == 0) {
+                    applyScrollAndTransform();
                 }
             });
             reapplyWindowTransformAnim.setDuration(RECENTS_ATTACH_DURATION).start();
             mStateCallback.runOnceAtState(STATE_HANDLER_INVALIDATED,
                     reapplyWindowTransformAnim::cancel);
         } else {
-            applyWindowTransform();
+            applyScrollAndTransform();
         }
     }
 
@@ -636,8 +676,13 @@
 
     private void onAnimatorPlaybackControllerCreated(AnimatorControllerWithResistance anim) {
         mLauncherTransitionController = anim;
-        mLauncherTransitionController.getNormalController().dispatchOnStart();
-        updateLauncherTransitionProgress();
+        mStateCallback.runOnceAtState(STATE_GESTURE_STARTED, () -> {
+            // Wait until the gesture is started (touch slop was passed) to start in sync with
+            // mWindowTransitionController. This ensures we don't hide the taskbar background when
+            // long pressing to stash it, for instance.
+            mLauncherTransitionController.getNormalController().dispatchOnStart();
+            updateLauncherTransitionProgress();
+        });
     }
 
     public Intent getLaunchIntent() {
@@ -659,7 +704,7 @@
         }
 
         updateSysUiFlags(mCurrentShift.value);
-        applyWindowTransform();
+        applyScrollAndTransform();
 
         updateLauncherTransitionProgress();
     }
@@ -669,7 +714,8 @@
                 || !canCreateNewOrUpdateExistingLauncherTransitionController()) {
             return;
         }
-        mLauncherTransitionController.setProgress(mCurrentShift.value, mDragLengthFactor);
+        mLauncherTransitionController.setProgress(
+                Math.max(mCurrentShift.value, getScaleProgressDueToScroll()), mDragLengthFactor);
     }
 
     /**
@@ -704,24 +750,23 @@
     @Override
     public void onRecentsAnimationStart(RecentsAnimationController controller,
             RecentsAnimationTargets targets) {
-        ActiveGestureLog.INSTANCE.addLog("startRecentsAnimationCallback", targets.apps.length);
+        super.onRecentsAnimationStart(controller, targets);
         mRecentsAnimationController = controller;
         mRecentsAnimationTargets = targets;
-        mTransformParams.setTargetSet(mRecentsAnimationTargets);
-        RemoteAnimationTargetCompat runningTaskTarget = targets.findTask(
-                mGestureState.getRunningTaskId());
-
-        if (runningTaskTarget != null) {
-            mTaskViewSimulator.setPreview(runningTaskTarget);
-        }
 
         // Only initialize the device profile, if it has not been initialized before, as in some
         // configurations targets.homeContentInsets may not be correct.
         if (mActivity == null) {
-            DeviceProfile dp = mTaskViewSimulator.getOrientationState().getLauncherDeviceProfile();
-            if (targets.minimizedHomeBounds != null && runningTaskTarget != null) {
+            RemoteAnimationTargetCompat primaryTaskTarget = targets.apps[0];
+            // orientation state is independent of which remote target handle we use since both
+            // should be pointing to the same one. Just choose index 0 for now since that works for
+            // both split and non-split
+            RecentsOrientedState orientationState = mRemoteTargetHandles[0].mTaskViewSimulator
+                    .getOrientationState();
+            DeviceProfile dp = orientationState.getLauncherDeviceProfile();
+            if (targets.minimizedHomeBounds != null && primaryTaskTarget != null) {
                 Rect overviewStackBounds = mActivityInterface
-                        .getOverviewWindowBounds(targets.minimizedHomeBounds, runningTaskTarget);
+                        .getOverviewWindowBounds(targets.minimizedHomeBounds, primaryTaskTarget);
                 dp = dp.getMultiWindowProfile(mContext,
                         new WindowBounds(overviewStackBounds, targets.homeContentInsets));
             } else {
@@ -731,7 +776,7 @@
             dp.updateInsets(targets.homeContentInsets);
             dp.updateIsSeascape(mContext);
             initTransitionEndpoints(dp);
-            mTaskViewSimulator.getOrientationState().setMultiWindowMode(dp.isMultiWindowMode);
+            orientationState.setMultiWindowMode(dp.isMultiWindowMode);
         }
 
         // Notify when the animation starts
@@ -742,6 +787,8 @@
             mRecentsAnimationStartCallbacks.clear();
         }
 
+        TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, false);
+
         // Only add the callback to enable the input consumer after we actually have the controller
         mStateCallback.runOnceAtState(STATE_APP_CONTROLLER_RECEIVED | STATE_GESTURE_STARTED,
                 mRecentsAnimationController::enableInputConsumer);
@@ -756,6 +803,8 @@
         mActivityInitListener.unregister();
         mStateCallback.setStateOnUiThread(STATE_GESTURE_CANCELLED | STATE_HANDLER_INVALIDATED);
 
+        TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, true);
+
         // Defer clearing the controller and the targets until after we've updated the state
         mRecentsAnimationController = null;
         mRecentsAnimationTargets = null;
@@ -845,9 +894,17 @@
     private void endRunningWindowAnim(boolean cancel) {
         if (mRunningWindowAnim != null) {
             if (cancel) {
-                mRunningWindowAnim.cancel();
+                for (RunningWindowAnim r : mRunningWindowAnim) {
+                    if (r != null) {
+                        r.cancel();
+                    }
+                }
             } else {
-                mRunningWindowAnim.end();
+                for (RunningWindowAnim r : mRunningWindowAnim) {
+                    if (r != null) {
+                        r.end();
+                    }
+                }
             }
         }
         if (mParallelRunningAnim != null) {
@@ -861,6 +918,9 @@
         // Fast-finish the attaching animation if it's still running.
         maybeUpdateRecentsAttachedState(false);
         final GestureEndTarget endTarget = mGestureState.getEndTarget();
+        // Wait until the given View (if supplied) draws before resuming the last task.
+        View postResumeLastTask = mActivityInterface.onSettledOnEndTarget(endTarget);
+
         if (endTarget != NEW_TASK) {
             InteractionJankMonitorWrapper.cancel(
                     InteractionJankMonitorWrapper.CUJ_QUICK_SWITCH);
@@ -869,6 +929,7 @@
             InteractionJankMonitorWrapper.cancel(
                     InteractionJankMonitorWrapper.CUJ_APP_CLOSE_TO_HOME);
         }
+
         switch (endTarget) {
             case HOME:
                 mStateCallback.setState(STATE_SCALED_CONTROLLER_HOME | STATE_CAPTURE_SCREENSHOT);
@@ -883,7 +944,13 @@
                 mStateCallback.setState(STATE_START_NEW_TASK | STATE_CAPTURE_SCREENSHOT);
                 break;
             case LAST_TASK:
-                mStateCallback.setState(STATE_RESUME_LAST_TASK);
+                if (postResumeLastTask != null) {
+                    ViewUtils.postFrameDrawn(postResumeLastTask,
+                            () -> mStateCallback.setState(STATE_RESUME_LAST_TASK));
+                } else {
+                    mStateCallback.setState(STATE_RESUME_LAST_TASK);
+                }
+                TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, true);
                 break;
         }
         ActiveGestureLog.INSTANCE.addLog("onSettledOnEndTarget " + endTarget);
@@ -1020,9 +1087,6 @@
             if (mRecentsView != null) {
                 int nearestPage = mRecentsView.getDestinationPage();
                 boolean isScrolling = false;
-                // Update page scroll before snapping to page to make sure we snapped to the
-                // position calculated with target gesture in mind.
-                mRecentsView.updateScrollSynchronously();
                 if (mRecentsView.getNextPage() != nearestPage) {
                     // We shouldn't really scroll to the next page when swiping up to recents.
                     // Only allow settling on the next page if it's nearest to the center.
@@ -1128,8 +1192,15 @@
                     mActivityRestartListener);
 
             mParallelRunningAnim = mActivityInterface.getParallelAnimationToLauncher(
-                    mGestureState.getEndTarget(), duration);
+                    mGestureState.getEndTarget(), duration,
+                    mTaskAnimationManager.getCurrentCallbacks());
             if (mParallelRunningAnim != null) {
+                mParallelRunningAnim.addListener(new AnimatorListenerAdapter() {
+                    @Override
+                    public void onAnimationEnd(Animator animation) {
+                        mParallelRunningAnim = null;
+                    }
+                });
                 mParallelRunningAnim.start();
             }
         }
@@ -1145,21 +1216,24 @@
             boolean isTranslucent = runningTaskTarget != null && runningTaskTarget.isTranslucent;
             boolean appCanEnterPip = !mDeviceState.isPipActive()
                     && runningTaskTarget != null
+                    && runningTaskTarget.allowEnterPip
                     && runningTaskTarget.taskInfo.pictureInPictureParams != null
                     && runningTaskTarget.taskInfo.pictureInPictureParams.isAutoEnterEnabled();
             HomeAnimationFactory homeAnimFactory =
                     createHomeAnimationFactory(cookies, duration, isTranslucent, appCanEnterPip,
                             runningTaskTarget);
             mIsSwipingPipToHome = homeAnimFactory.supportSwipePipToHome() && appCanEnterPip;
-            final RectFSpringAnim windowAnim;
+            final RectFSpringAnim[] windowAnim;
             if (mIsSwipingPipToHome) {
                 mSwipePipToHomeAnimator = createWindowAnimationToPip(
                         homeAnimFactory, runningTaskTarget, start);
-                windowAnim = mSwipePipToHomeAnimator;
+                mSwipePipToHomeAnimators[0] = mSwipePipToHomeAnimator;
+                windowAnim = mSwipePipToHomeAnimators;
             } else {
                 mSwipePipToHomeAnimator = null;
                 windowAnim = createWindowAnimationToHome(start, homeAnimFactory);
-                windowAnim.addAnimatorListener(new AnimationSuccessListener() {
+
+                windowAnim[0].addAnimatorListener(new AnimationSuccessListener() {
                     @Override
                     public void onAnimationSuccess(Animator animator) {
                         if (mRecentsAnimationController == null) {
@@ -1173,14 +1247,22 @@
                     }
                 });
             }
-            windowAnim.start(mContext, velocityPxPerMs);
-            mRunningWindowAnim = RunningWindowAnim.wrap(windowAnim);
+            mRunningWindowAnim = new RunningWindowAnim[windowAnim.length];
+            for (int i = 0, windowAnimLength = windowAnim.length; i < windowAnimLength; i++) {
+                RectFSpringAnim windowAnimation = windowAnim[i];
+                if (windowAnimation == null) {
+                    continue;
+                }
+                windowAnimation.start(mContext, velocityPxPerMs);
+                mRunningWindowAnim[i] = RunningWindowAnim.wrap(windowAnimation);
+            }
             homeAnimFactory.setSwipeVelocity(velocityPxPerMs.y);
             homeAnimFactory.playAtomicAnimation(velocityPxPerMs.y);
             mLauncherTransitionController = null;
 
             if (mRecentsView != null) {
-                mRecentsView.onPrepareGestureEndAnimation(null, mGestureState.getEndTarget());
+                mRecentsView.onPrepareGestureEndAnimation(null, mGestureState.getEndTarget(),
+                        getRemoteTaskViewSimulators());
             }
         } else {
             AnimatorSet animatorSet = new AnimatorSet();
@@ -1222,24 +1304,41 @@
             animatorSet.play(windowAnim);
             if (mRecentsView != null) {
                 mRecentsView.onPrepareGestureEndAnimation(
-                        animatorSet, mGestureState.getEndTarget());
+                        animatorSet, mGestureState.getEndTarget(),
+                        getRemoteTaskViewSimulators());
             }
             animatorSet.setDuration(duration).setInterpolator(interpolator);
             animatorSet.start();
-            mRunningWindowAnim = RunningWindowAnim.wrap(animatorSet);
+            mRunningWindowAnim = new RunningWindowAnim[]{RunningWindowAnim.wrap(animatorSet)};
         }
     }
 
+    private int calculateWindowRotation(RemoteAnimationTargetCompat runningTaskTarget,
+            RecentsOrientedState orientationState) {
+        if (runningTaskTarget.rotationChange != 0
+                && TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
+            return Math.abs(runningTaskTarget.rotationChange) == ROTATION_90
+                    ? ROTATION_270 : ROTATION_90;
+        } else {
+            return orientationState.getDisplayRotation();
+        }
+    }
+
+    /**
+     * TODO(b/195473090) handle multiple task simulators (if needed) for PIP
+     */
     private SwipePipToHomeAnimator createWindowAnimationToPip(HomeAnimationFactory homeAnimFactory,
             RemoteAnimationTargetCompat runningTaskTarget, float startProgress) {
         // Directly animate the app to PiP (picture-in-picture) mode
         final ActivityManager.RunningTaskInfo taskInfo = mGestureState.getRunningTask();
-        final RecentsOrientedState orientationState = mTaskViewSimulator.getOrientationState();
-        final int windowRotation = orientationState.getDisplayRotation();
+        final RecentsOrientedState orientationState = mRemoteTargetHandles[0].mTaskViewSimulator
+                .getOrientationState();
+        final int windowRotation = calculateWindowRotation(runningTaskTarget, orientationState);
         final int homeRotation = orientationState.getRecentsActivityRotation();
 
         final Matrix homeToWindowPositionMap = new Matrix();
-        final RectF startRect = updateProgressForStartRect(homeToWindowPositionMap, startProgress);
+        final RectF startRect = updateProgressForStartRect(homeToWindowPositionMap,
+                startProgress)[0];
         // Move the startRect to Launcher space as floatingIconView runs in Launcher
         final Matrix windowToHomePositionMap = new Matrix();
         homeToWindowPositionMap.invert(windowToHomePositionMap);
@@ -1268,7 +1367,7 @@
         // is not ROTATION_0 (which implies the rotation is turned on in launcher settings).
         if (homeRotation == ROTATION_0
                 && (windowRotation == ROTATION_90 || windowRotation == ROTATION_270)) {
-            builder.setFromRotation(mTaskViewSimulator, windowRotation,
+            builder.setFromRotation(mRemoteTargetHandles[0].mTaskViewSimulator, windowRotation,
                     taskInfo.displayCutoutInsets);
         }
         final SwipePipToHomeAnimator swipePipToHomeAnimator = builder.build();
@@ -1298,7 +1397,7 @@
                 mGestureState.setState(STATE_END_TARGET_ANIMATION_FINISHED);
             }
         });
-        setupWindowAnimation(swipePipToHomeAnimator);
+        setupWindowAnimation(new RectFSpringAnim[]{swipePipToHomeAnimator});
         return swipePipToHomeAnimator;
     }
 
@@ -1325,19 +1424,19 @@
      * @param homeAnimationFactory The home animation factory.
      */
     @Override
-    protected RectFSpringAnim createWindowAnimationToHome(float startProgress,
+    protected RectFSpringAnim[] createWindowAnimationToHome(float startProgress,
             HomeAnimationFactory homeAnimationFactory) {
-        RectFSpringAnim anim =
+        RectFSpringAnim[] anim =
                 super.createWindowAnimationToHome(startProgress, homeAnimationFactory);
         setupWindowAnimation(anim);
         return anim;
     }
 
-    private void setupWindowAnimation(RectFSpringAnim anim) {
-        anim.addOnUpdateListener((v, r, p) -> {
+    private void setupWindowAnimation(RectFSpringAnim[] anims) {
+        anims[0].addOnUpdateListener((v, r, p) -> {
             updateSysUiFlags(Math.max(p, mCurrentShift.value));
         });
-        anim.addAnimatorListener(new AnimationSuccessListener() {
+        anims[0].addAnimatorListener(new AnimationSuccessListener() {
             @Override
             public void onAnimationSuccess(Animator animator) {
                 if (mRecentsView != null) {
@@ -1349,7 +1448,7 @@
             }
         });
         if (mRecentsAnimationTargets != null) {
-            mRecentsAnimationTargets.addReleaseCheck(anim);
+            mRecentsAnimationTargets.addReleaseCheck(anims[0]);
         }
     }
 
@@ -1492,6 +1591,10 @@
         boolean wasVisible = mWasLauncherAlreadyVisible || mGestureStarted;
         mActivityInterface.onTransitionCancelled(wasVisible, mGestureState.getEndTarget());
 
+        if (mRecentsAnimationTargets != null) {
+            TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, true);
+        }
+
         // Leave the pending invisible flag, as it may be used by wallpaper open animation.
         if (mActivity != null) {
             mActivity.clearForceInvisibleFlag(INVISIBLE_BY_STATE_HANDLER);
@@ -1593,7 +1696,7 @@
      * if applicable. This should happen before {@link #finishRecentsControllerToHome(Runnable)}.
      */
     private void maybeFinishSwipePipToHome() {
-        if (mIsSwipingPipToHome && mSwipePipToHomeAnimator != null) {
+        if (mIsSwipingPipToHome && mSwipePipToHomeAnimators[0] != null) {
             SystemUiProxy.INSTANCE.get(mContext).stopSwipePipToHome(
                     mSwipePipToHomeAnimator.getComponentName(),
                     mSwipePipToHomeAnimator.getDestinationBounds(),
@@ -1634,8 +1737,8 @@
      * depend on proper class initialization.
      */
     protected void initAfterSubclassConstructor() {
-        initTransitionEndpoints(
-                mTaskViewSimulator.getOrientationState().getLauncherDeviceProfile());
+        initTransitionEndpoints(mRemoteTargetHandles[0].mTaskViewSimulator
+                        .getOrientationState().getLauncherDeviceProfile());
     }
 
     protected void performHapticFeedback() {
@@ -1652,7 +1755,8 @@
 
     protected void linkRecentsViewScroll() {
         SurfaceTransactionApplier.create(mRecentsView, applier -> {
-            mTransformParams.setSyncTransactionApplier(applier);
+            runActionOnRemoteHandles(remoteTargetHandle -> remoteTargetHandle.mTransformParams
+                            .setSyncTransactionApplier(applier));
             runOnRecentsAnimationStart(() ->
                     mRecentsAnimationTargets.addReleaseCheck(applier));
         });
@@ -1725,6 +1829,9 @@
 
     @Override
     public void onRecentsAnimationFinished(RecentsAnimationController controller) {
+        if (!controller.getFinishTargetIsLauncher()) {
+            TaskViewUtils.setDividerBarShown(mRecentsAnimationTargets.nonApps, true);
+        }
         mRecentsAnimationController = null;
         mRecentsAnimationTargets = null;
         if (mRecentsView != null) {
@@ -1775,21 +1882,58 @@
     /**
      * Applies the transform on the recents animation
      */
-    protected void applyWindowTransform() {
-        if (mWindowTransitionController != null) {
-            mWindowTransitionController.setProgress(mCurrentShift.value, mDragLengthFactor);
-        }
+    protected void applyScrollAndTransform() {
         // No need to apply any transform if there is ongoing swipe-pip-to-home animator since
         // that animator handles the leash solely.
-        if (mRecentsAnimationTargets != null && !mIsSwipingPipToHome) {
-            if (mRecentsViewScrollLinked && mRecentsView != null) {
-                mTaskViewSimulator.setScroll(mRecentsView.getScrollOffset());
+        boolean notSwipingPipToHome = mRecentsAnimationTargets != null && !mIsSwipingPipToHome;
+        boolean setRecentsScroll = mRecentsViewScrollLinked && mRecentsView != null;
+        for (RemoteTargetHandle remoteHandle : mRemoteTargetHandles) {
+            AnimatorControllerWithResistance playbackController = remoteHandle.mPlaybackController;
+            if (playbackController != null) {
+                playbackController.setProgress(Math.max(mCurrentShift.value,
+                        getScaleProgressDueToScroll()), mDragLengthFactor);
             }
-            mTaskViewSimulator.apply(mTransformParams);
+
+            if (notSwipingPipToHome) {
+                TaskViewSimulator taskViewSimulator = remoteHandle.mTaskViewSimulator;
+                if (setRecentsScroll) {
+                    taskViewSimulator.setScroll(mRecentsView.getScrollOffset());
+                }
+                taskViewSimulator.apply(remoteHandle.mTransformParams);
+            }
         }
         ProtoTracer.INSTANCE.get(mContext).scheduleFrameUpdate();
     }
 
+    // Scaling of RecentsView during quick switch based on amount of recents scroll
+    private float getScaleProgressDueToScroll() {
+        if (mActivity == null || !mActivity.getDeviceProfile().isTablet || mRecentsView == null
+                || !mRecentsViewScrollLinked) {
+            return 0;
+        }
+
+        float scrollOffset = Math.abs(mRecentsView.getScrollOffset(mRecentsView.getCurrentPage()));
+        int maxScrollOffset = mRecentsView.getPagedOrientationHandler().getPrimaryValue(
+                mRecentsView.getLastComputedTaskSize().width(),
+                mRecentsView.getLastComputedTaskSize().height());
+        maxScrollOffset += mRecentsView.getPageSpacing();
+
+        float maxScaleProgress =
+                MAX_QUICK_SWITCH_RECENTS_SCALE_PROGRESS * mRecentsView.getMaxScaleForFullScreen();
+        float scaleProgress = maxScaleProgress;
+
+        if (scrollOffset < mQuickSwitchScaleScrollThreshold) {
+            scaleProgress = Utilities.mapToRange(scrollOffset, 0, mQuickSwitchScaleScrollThreshold,
+                    0, maxScaleProgress, ACCEL_DEACCEL);
+        } else if (scrollOffset > (maxScrollOffset - mQuickSwitchScaleScrollThreshold)) {
+            scaleProgress = Utilities.mapToRange(scrollOffset,
+                    (maxScrollOffset - mQuickSwitchScaleScrollThreshold), maxScrollOffset,
+                    maxScaleProgress, 0, ACCEL_DEACCEL);
+        }
+
+        return scaleProgress;
+    }
+
     /**
      * Used for winscope tracing, see launcher_trace.proto
      * @see com.android.systemui.shared.tracing.ProtoTraceable#writeToProto
@@ -1811,7 +1955,6 @@
     }
 
     public interface Factory {
-
         AbsSwipeUpHandler newHandler(GestureState gestureState, long touchTimeMs);
     }
 }
diff --git a/quickstep/src/com/android/quickstep/AnimatedFloat.java b/quickstep/src/com/android/quickstep/AnimatedFloat.java
index f7e8781..95c8710 100644
--- a/quickstep/src/com/android/quickstep/AnimatedFloat.java
+++ b/quickstep/src/com/android/quickstep/AnimatedFloat.java
@@ -53,6 +53,16 @@
         mUpdateCallback = updateCallback;
     }
 
+    /**
+     * Returns an animation from the current value to the given value.
+     */
+    public ObjectAnimator animateToValue(float end) {
+        return animateToValue(value, end);
+    }
+
+    /**
+     * Returns an animation from the given start value to the given end value.
+     */
     public ObjectAnimator animateToValue(float start, float end) {
         cancelAnimation();
         mValueAnimator = ObjectAnimator.ofFloat(this, VALUE, start, end);
diff --git a/quickstep/src/com/android/quickstep/BaseActivityInterface.java b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
index fac4d52..e781160 100644
--- a/quickstep/src/com/android/quickstep/BaseActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
@@ -40,6 +40,7 @@
 import android.os.Build;
 import android.view.Gravity;
 import android.view.MotionEvent;
+import android.view.View;
 
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
@@ -48,11 +49,11 @@
 import com.android.launcher3.R;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.statemanager.BaseState;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.WindowBounds;
 import com.android.launcher3.views.ScrimView;
 import com.android.quickstep.SysUINavigationMode.Mode;
@@ -202,42 +203,53 @@
     }
 
     /**
+     * Sets the task size in {@param outRect} taking split screened windows into account.
+     * We assume combined height of both tasks will be same as one normal task, then we'll modify
+     * the task height/width based on the ratio of task screen space bounds from
+     * {@param splitInfo}
+     *
+     * @param desiredStageBounds whether task size for top/left or bottom/right needs to be computed
+     */
+    public final void calculateStagedSplitTaskSize(Context context, DeviceProfile dp, Rect outRect,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo,
+            @SplitConfigurationOptions.StagePosition int desiredStageBounds) {
+        calculateTaskSize(context, dp, outRect);
+
+        // TODO(b/181705607) Change for landscape vs portrait
+        float totalHeight = splitInfo.mLeftTopBounds.height()
+                + splitInfo.mRightBottomBounds.height()
+                + splitInfo.mDividerBounds.height() / 2f;
+        float topTaskPercent = splitInfo.mLeftTopBounds.height() / totalHeight;
+        if (desiredStageBounds == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
+            float diff = outRect.height() * (1f - topTaskPercent);
+            outRect.bottom -= diff;
+        } else {
+            float diff = outRect.height() * topTaskPercent;
+            outRect.top += diff;
+        }
+    }
+
+    /**
      * Calculates the taskView size for the provided device configuration.
      */
-    public final void calculateTaskSize(Context context, DeviceProfile dp, Rect outRect,
-            PagedOrientationHandler orientedState) {
+    public final void calculateTaskSize(Context context, DeviceProfile dp, Rect outRect) {
         Resources res = context.getResources();
-        if (dp.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
+        if (dp.overviewShowAsGrid) {
             Rect gridRect = new Rect();
             calculateGridSize(context, dp, gridRect);
 
-            int verticalMargin = res.getDimensionPixelSize(
-                    R.dimen.overview_grid_focus_vertical_margin);
-            float taskHeight = gridRect.height() - verticalMargin * 2;
-
             PointF taskDimension = getTaskDimension(context, dp);
-            float scale = taskHeight / Math.max(taskDimension.x, taskDimension.y);
+            float scale = gridRect.height() / taskDimension.y;
             int outWidth = Math.round(scale * taskDimension.x);
             int outHeight = Math.round(scale * taskDimension.y);
 
-            int gravity = Gravity.CENTER_VERTICAL;
-            gravity |= orientedState.getRecentsRtlSetting(res) ? Gravity.RIGHT : Gravity.LEFT;
+            int gravity = Gravity.CENTER;
             Gravity.apply(gravity, outWidth, outHeight, gridRect, outRect);
         } else {
             int taskMargin = dp.overviewTaskMarginPx;
-            int proactiveRowAndMargin;
-            if (!TaskView.SHOW_PROACTIVE_ACTIONS || dp.isVerticalBarLayout()) {
-                // In Vertical Bar Layout the proactive row doesn't have its own space, it's inside
-                // the actions row.
-                proactiveRowAndMargin = 0;
-            } else {
-                proactiveRowAndMargin = res.getDimensionPixelSize(
-                        R.dimen.overview_proactive_row_height)
-                        + res.getDimensionPixelSize(R.dimen.overview_proactive_row_bottom_margin);
-            }
             calculateTaskSizeInternal(context, dp,
                     dp.overviewTaskThumbnailTopMarginPx,
-                    proactiveRowAndMargin + getOverviewActionsHeight(context, dp),
+                    getProactiveRowAndMargin(context, dp) + getOverviewActionsHeight(context, dp),
                     res.getDimensionPixelSize(R.dimen.overview_minimum_next_prev_size) + taskMargin,
                     outRect);
         }
@@ -278,14 +290,14 @@
     public static void getTaskDimension(Context context, DeviceProfile dp, PointF out) {
         if (dp.isMultiWindowMode) {
             WindowBounds bounds = SplitScreenBounds.INSTANCE.getSecondaryWindowBounds(context);
-            if (TaskView.CLIP_STATUS_AND_NAV_BARS) {
+            if (TaskView.clipStatusAndNavBars(dp)) {
                 out.x = bounds.availableSize.x;
                 out.y = bounds.availableSize.y;
             } else {
                 out.x = bounds.availableSize.x + bounds.insets.left + bounds.insets.right;
                 out.y = bounds.availableSize.y + bounds.insets.top + bounds.insets.bottom;
             }
-        } else if (TaskView.CLIP_STATUS_AND_NAV_BARS) {
+        } else if (TaskView.clipStatusAndNavBars(dp)) {
             out.x = dp.availableWidthPx;
             out.y = dp.availableHeightPx;
         } else {
@@ -299,13 +311,14 @@
      */
     public final void calculateGridSize(Context context, DeviceProfile dp, Rect outRect) {
         Resources res = context.getResources();
-        int topMargin = res.getDimensionPixelSize(R.dimen.overview_grid_top_margin);
-        int bottomMargin = res.getDimensionPixelSize(R.dimen.overview_grid_bottom_margin);
+        Rect insets = dp.getInsets();
+        int topMargin = dp.overviewTaskThumbnailTopMarginPx;
+        int bottomMargin =
+                getProactiveRowAndMargin(context, dp) + getOverviewActionsHeight(context, dp);
         int sideMargin = res.getDimensionPixelSize(R.dimen.overview_grid_side_margin);
 
-        Rect insets = dp.getInsets();
         outRect.set(0, 0, dp.widthPx, dp.heightPx);
-        outRect.inset(Math.max(insets.left, sideMargin), Math.max(insets.top, topMargin),
+        outRect.inset(Math.max(insets.left, sideMargin), insets.top + topMargin,
                 Math.max(insets.right, sideMargin), Math.max(insets.bottom, bottomMargin));
     }
 
@@ -318,18 +331,17 @@
         Rect gridRect = new Rect();
         calculateGridSize(context, dp, gridRect);
 
-        int rowSpacing = res.getDimensionPixelSize(R.dimen.overview_grid_row_spacing);
-        float rowHeight = (gridRect.height() - rowSpacing) / 2f;
+        float rowHeight =
+                (gridRect.height() + dp.overviewTaskThumbnailTopMarginPx - dp.overviewRowSpacing)
+                        / 2f;
 
         PointF taskDimension = getTaskDimension(context, dp);
-        float scale = (rowHeight - dp.overviewTaskThumbnailTopMarginPx) / Math.max(
-                taskDimension.x, taskDimension.y);
+        float scale = (rowHeight - dp.overviewTaskThumbnailTopMarginPx) / taskDimension.y;
         int outWidth = Math.round(scale * taskDimension.x);
         int outHeight = Math.round(scale * taskDimension.y);
 
         int gravity = Gravity.TOP;
         gravity |= orientedState.getRecentsRtlSetting(res) ? Gravity.RIGHT : Gravity.LEFT;
-        gridRect.inset(0, dp.overviewTaskThumbnailTopMarginPx, 0, 0);
         Gravity.apply(gravity, outWidth, outHeight, gridRect, outRect);
     }
 
@@ -345,6 +357,21 @@
                 outRect);
     }
 
+    private int getProactiveRowAndMargin(Context context, DeviceProfile dp) {
+        Resources res = context.getResources();
+        int proactiveRowAndMargin;
+        if (!TaskView.SHOW_PROACTIVE_ACTIONS || dp.isVerticalBarLayout()) {
+            // In Vertical Bar Layout the proactive row doesn't have its own space, it's inside
+            // the actions row.
+            proactiveRowAndMargin = 0;
+        } else {
+            proactiveRowAndMargin = res.getDimensionPixelSize(
+                    R.dimen.overview_proactive_row_height)
+                    + res.getDimensionPixelSize(R.dimen.overview_proactive_row_bottom_margin);
+        }
+        return proactiveRowAndMargin;
+    }
+
     /** Gets the space that the overview actions will take, including bottom margin. */
     private int getOverviewActionsHeight(Context context, DeviceProfile dp) {
         Resources res = context.getResources();
@@ -358,7 +385,8 @@
      * an optional additional animation with the same duration.
      */
     public @Nullable Animator getParallelAnimationToLauncher(
-            GestureState.GestureEndTarget endTarget, long duration) {
+            GestureState.GestureEndTarget endTarget, long duration,
+            RecentsAnimationCallbacks callbacks) {
         if (endTarget == RECENTS) {
             ACTIVITY_TYPE activity = getCreatedActivity();
             if (activity == null) {
@@ -385,6 +413,15 @@
      */
     public abstract STATE_TYPE stateFromGestureEndTarget(GestureState.GestureEndTarget endTarget);
 
+    /**
+     * Called when the animation to the target has finished, but right before updating the state.
+     * @return A View that needs to draw before ending the recents animation to LAST_TASK.
+     * (This is a hack to ensure Taskbar draws its background first to avoid flickering.)
+     */
+    public @Nullable View onSettledOnEndTarget(GestureState.GestureEndTarget endTarget) {
+        return null;
+    }
+
     public interface AnimationFactory {
 
         void createActivityInterface(long transitionLength);
@@ -399,6 +436,10 @@
         default boolean isRecentsAttachedToAppWindow() {
             return false;
         }
+
+        default boolean hasRecentsEverAttachedToAppWindow() {
+            return false;
+        }
     }
 
     class DefaultAnimationFactory implements AnimationFactory {
@@ -408,6 +449,7 @@
         private final Consumer<AnimatorControllerWithResistance> mCallback;
 
         private boolean mIsAttachedToWindow;
+        private boolean mHasEverAttachedToWindow;
 
         DefaultAnimationFactory(Consumer<AnimatorControllerWithResistance> callback) {
             mCallback = callback;
@@ -461,6 +503,9 @@
             }
             mIsAttachedToWindow = attached;
             RecentsView recentsView = mActivity.getOverviewPanel();
+            if (attached) {
+                mHasEverAttachedToWindow = true;
+            }
             Animator fadeAnim = mActivity.getStateManager()
                     .createStateElementAnimation(INDEX_RECENTS_FADE_ANIM, attached ? 1 : 0);
 
@@ -490,6 +535,11 @@
             return mIsAttachedToWindow;
         }
 
+        @Override
+        public boolean hasRecentsEverAttachedToAppWindow() {
+            return mHasEverAttachedToWindow;
+        }
+
         protected void createBackgroundToOverviewAnim(ACTIVITY_TYPE activity, PendingAnimation pa) {
             //  Scale down recents from being full screen to being in overview.
             RecentsView recentsView = activity.getOverviewPanel();
diff --git a/quickstep/src/com/android/quickstep/FallbackActivityInterface.java b/quickstep/src/com/android/quickstep/FallbackActivityInterface.java
index 7fb8e16..4df1aad 100644
--- a/quickstep/src/com/android/quickstep/FallbackActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/FallbackActivityInterface.java
@@ -57,7 +57,7 @@
     @Override
     public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect,
             PagedOrientationHandler orientationHandler) {
-        calculateTaskSize(context, dp, outRect, orientationHandler);
+        calculateTaskSize(context, dp, outRect);
         if (dp.isVerticalBarLayout()
                 && SysUINavigationMode.INSTANCE.get(context).getMode() != NO_BUTTON) {
             return dp.isSeascape() ? outRect.left : (dp.widthPx - outRect.right);
diff --git a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
index e2f198c..773817f 100644
--- a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
+++ b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
@@ -28,6 +28,7 @@
 
 import android.animation.ObjectAnimator;
 import android.annotation.TargetApi;
+import android.app.ActivityManager;
 import android.app.ActivityOptions;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
@@ -44,6 +45,7 @@
 import android.os.Messenger;
 import android.os.ParcelUuid;
 import android.os.UserHandle;
+import android.util.Log;
 import android.view.Surface;
 import android.view.SurfaceControl;
 import android.view.SurfaceControl.Transaction;
@@ -56,6 +58,7 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.anim.SpringAnimationBuilder;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.quickstep.fallback.FallbackRecentsView;
 import com.android.quickstep.fallback.RecentsState;
 import com.android.quickstep.util.AppCloseConfig;
@@ -101,7 +104,9 @@
 
         mRunningOverHome = ActivityManagerWrapper.isHomeTask(mGestureState.getRunningTask());
         if (mRunningOverHome) {
-            mTransformParams.setHomeBuilderProxy(this::updateHomeActivityTransformDuringSwipeUp);
+            runActionOnRemoteHandles(remoteTargetHandle ->
+                    remoteTargetHandle.mTransformParams.setHomeBuilderProxy(
+                    FallbackSwipeHandler.this::updateHomeActivityTransformDuringSwipeUp));
         }
     }
 
@@ -109,7 +114,8 @@
     protected void initTransitionEndpoints(DeviceProfile dp) {
         super.initTransitionEndpoints(dp);
         if (mRunningOverHome) {
-            mMaxLauncherScale = 1 / mTaskViewSimulator.getFullScreenScale();
+            // Full screen scale should be independent of remote target handle
+            mMaxLauncherScale = 1 / mRemoteTargetHandles[0].mTaskViewSimulator.getFullScreenScale();
         }
     }
 
@@ -134,6 +140,10 @@
         mActiveAnimationFactory = new FallbackHomeAnimationFactory(duration);
         ActivityOptions options = ActivityOptions.makeCustomAnimation(mContext, 0, 0);
         Intent intent = new Intent(mGestureState.getHomeIntent());
+        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME,
+                    "createHomeAnimationFactory: " + intent.toShortString(true, true, true, false));
+        }
         mActiveAnimationFactory.addGestureContract(intent);
         try {
             mContext.startActivity(intent, options.toBundle());
@@ -174,7 +184,8 @@
     protected void notifyGestureAnimationStartToRecents() {
         if (mRunningOverHome) {
             if (SysUINavigationMode.getMode(mContext).hasGestures) {
-                mRecentsView.onGestureAnimationStartOnHome(mGestureState.getRunningTask());
+                mRecentsView.onGestureAnimationStartOnHome(
+                        new ActivityManager.RunningTaskInfo[]{mGestureState.getRunningTask()});
             }
         } else {
             super.notifyGestureAnimationStartToRecents();
@@ -202,19 +213,24 @@
                 mHomeAlpha = new AnimatedFloat();
                 mHomeAlpha.value = Utilities.boundToRange(1 - mCurrentShift.value, 0, 1);
                 mVerticalShiftForScale.value = mCurrentShift.value;
-                mTransformParams.setHomeBuilderProxy(
-                        this::updateHomeActivityTransformDuringHomeAnim);
+                runActionOnRemoteHandles(remoteTargetHandle ->
+                        remoteTargetHandle.mTransformParams.setHomeBuilderProxy(
+                                FallbackHomeAnimationFactory.this
+                                        ::updateHomeActivityTransformDuringHomeAnim));
             } else {
                 mHomeAlpha = new AnimatedFloat(this::updateHomeAlpha);
                 mHomeAlpha.value = 0;
-
-                mHomeAlphaParams.setHomeBuilderProxy(
-                        this::updateHomeActivityTransformDuringHomeAnim);
+                runActionOnRemoteHandles(remoteTargetHandle ->
+                        remoteTargetHandle.mTransformParams.setHomeBuilderProxy(
+                                FallbackHomeAnimationFactory.this
+                                        ::updateHomeActivityTransformDuringHomeAnim));
             }
 
             mRecentsAlpha.value = 1;
-            mTransformParams.setBaseBuilderProxy(
-                    this::updateRecentsActivityTransformDuringHomeAnim);
+            runActionOnRemoteHandles(remoteTargetHandle ->
+                    remoteTargetHandle.mTransformParams.setHomeBuilderProxy(
+                            FallbackHomeAnimationFactory.this
+                                    ::updateRecentsActivityTransformDuringHomeAnim));
         }
 
         @NonNull
diff --git a/quickstep/src/com/android/quickstep/InputConsumer.java b/quickstep/src/com/android/quickstep/InputConsumer.java
index 0b2a057..3580ee5 100644
--- a/quickstep/src/com/android/quickstep/InputConsumer.java
+++ b/quickstep/src/com/android/quickstep/InputConsumer.java
@@ -39,6 +39,7 @@
     int TYPE_OVERSCROLL = 1 << 9;
     int TYPE_SYSUI_OVERLAY = 1 << 10;
     int TYPE_ONE_HANDED = 1 << 11;
+    int TYPE_TASKBAR_STASH = 1 << 12;
 
     String[] NAMES = new String[] {
            "TYPE_NO_OP",                    // 0
@@ -53,6 +54,7 @@
             "TYPE_OVERSCROLL",              // 9
             "TYPE_SYSUI_OVERLAY",           // 10
             "TYPE_ONE_HANDED",              // 11
+            "TYPE_TASKBAR_STASH",           // 12
     };
 
     InputConsumer NO_OP = () -> TYPE_NO_OP;
diff --git a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
index fb1391a..ae6ea79 100644
--- a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
@@ -25,10 +25,12 @@
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 
 import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.content.Context;
 import android.graphics.Rect;
 import android.view.MotionEvent;
+import android.view.View;
 
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
@@ -71,7 +73,7 @@
     @Override
     public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect,
             PagedOrientationHandler orientationHandler) {
-        calculateTaskSize(context, dp, outRect, orientationHandler);
+        calculateTaskSize(context, dp, outRect);
         if (dp.isVerticalBarLayout() && SysUINavigationMode.getMode(context) != Mode.NO_BUTTON) {
             return dp.isSeascape() ? outRect.left : (dp.widthPx - outRect.right);
         } else {
@@ -131,6 +133,18 @@
                         new ClampedDepthProperty(fromDepthRatio, toDepthRatio),
                         fromDepthRatio, toDepthRatio, LINEAR);
 
+                pa.addListener(new AnimatorListenerAdapter() {
+                    @Override
+                    public void onAnimationStart(Animator animation) {
+                        LauncherTaskbarUIController taskbarUIController =
+                                activity.getTaskbarUIController();
+                        if (taskbarUIController != null) {
+                            // Launcher's ScrimView will draw the background throughout the gesture.
+                            taskbarUIController.forceHideBackground(true);
+                        }
+                    }
+                });
+
             }
         };
 
@@ -189,7 +203,7 @@
                 launcher != null && launcher.getStateManager().getState().overviewUi
                         ? launcher.getOverviewPanel() : null;
         if (recentsView == null || (!launcher.hasBeenResumed()
-                && recentsView.getRunningTaskId() == -1)) {
+                && recentsView.getRunningTaskViewId() == -1)) {
             // If live tile has ended, return null.
             return null;
         }
@@ -288,6 +302,10 @@
         } else {
             om.hideOverlay(150);
         }
+        LauncherTaskbarUIController taskbarController = getTaskbarController();
+        if (taskbarController != null) {
+            taskbarController.hideEdu();
+        }
     }
 
     @Override
@@ -299,14 +317,15 @@
 
     @Override
     public @Nullable Animator getParallelAnimationToLauncher(GestureEndTarget endTarget,
-            long duration) {
+            long duration, RecentsAnimationCallbacks callbacks) {
         LauncherTaskbarUIController uiController = getTaskbarController();
-        Animator superAnimator = super.getParallelAnimationToLauncher(endTarget, duration);
-        if (uiController == null) {
+        Animator superAnimator = super.getParallelAnimationToLauncher(
+                endTarget, duration, callbacks);
+        if (uiController == null || callbacks == null) {
             return superAnimator;
         }
         LauncherState toState = stateFromGestureEndTarget(endTarget);
-        Animator taskbarAnimator = uiController.createAnimToLauncher(toState, duration);
+        Animator taskbarAnimator = uiController.createAnimToLauncher(toState, callbacks, duration);
         if (superAnimator == null) {
             return taskbarAnimator;
         } else {
@@ -353,4 +372,16 @@
                 return NORMAL;
         }
     }
+
+    @Override
+    public View onSettledOnEndTarget(@Nullable GestureEndTarget endTarget) {
+        View superRet = super.onSettledOnEndTarget(endTarget);
+        LauncherTaskbarUIController taskbarUIController = getTaskbarController();
+        if (taskbarUIController != null) {
+            // Start drawing taskbar's background again since launcher might stop drawing.
+            taskbarUIController.forceHideBackground(false);
+            return taskbarUIController.getRootView();
+        }
+        return superRet;
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java b/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java
index 19cad53..ce3406c 100644
--- a/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java
+++ b/quickstep/src/com/android/quickstep/LauncherSwipeHandlerV2.java
@@ -106,9 +106,11 @@
         boolean canUseWorkspaceView = workspaceView != null && workspaceView.isAttachedToWindow();
 
         mActivity.getRootView().setForceHideBackArrow(true);
-        mActivity.setHintUserWillBeActive();
+        if (!TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
+            mActivity.setHintUserWillBeActive();
+        }
 
-        if (!canUseWorkspaceView || appCanEnterPip) {
+        if (!canUseWorkspaceView || appCanEnterPip || mIsSwipeForStagedSplit) {
             return new LauncherHomeAnimationFactory();
         }
         if (workspaceView instanceof LauncherAppWidgetHostView) {
@@ -179,14 +181,16 @@
         final float floatingWidgetAlpha = isTargetTranslucent ? 0 : 1;
         RectF backgroundLocation = new RectF();
         Rect crop = new Rect();
-        mTaskViewSimulator.getCurrentCropRect().roundOut(crop);
+        // We can assume there is only one remote target here because staged split never animates
+        // into the app icon, only into the homescreen
+        mRemoteTargetHandles[0].mTaskViewSimulator.getCurrentCropRect().roundOut(crop);
         Size windowSize = new Size(crop.width(), crop.height());
         int fallbackBackgroundColor =
                 FloatingWidgetView.getDefaultBackgroundColor(mContext, runningTaskTarget);
         FloatingWidgetView floatingWidgetView = FloatingWidgetView.getFloatingWidgetView(mActivity,
                 hostView, backgroundLocation, windowSize,
-                mTaskViewSimulator.getCurrentCornerRadius(), isTargetTranslucent,
-                fallbackBackgroundColor);
+                mRemoteTargetHandles[0].mTaskViewSimulator.getCurrentCornerRadius(),
+                isTargetTranslucent, fallbackBackgroundColor);
 
         return new FloatingViewHomeAnimationFactory(floatingWidgetView) {
 
diff --git a/quickstep/src/com/android/quickstep/OverviewCommandHelper.java b/quickstep/src/com/android/quickstep/OverviewCommandHelper.java
index 5d1f908..8fb851c 100644
--- a/quickstep/src/com/android/quickstep/OverviewCommandHelper.java
+++ b/quickstep/src/com/android/quickstep/OverviewCommandHelper.java
@@ -49,6 +49,7 @@
     public static final int TYPE_SHOW_NEXT_FOCUS = 2;
     public static final int TYPE_HIDE = 3;
     public static final int TYPE_TOGGLE = 4;
+    public static final int TYPE_HOME = 5;
 
     private static final String TRANSITION_NAME = "Transition:toOverview";
 
@@ -154,6 +155,10 @@
                 // already hidden
                 return true;
             }
+            if (cmd.type == TYPE_HOME) {
+                mService.startActivity(mOverviewComponentObserver.getHomeIntent());
+                return true;
+            }
         } else {
             switch (cmd.type) {
                 case TYPE_SHOW:
@@ -168,6 +173,9 @@
                 }
                 case TYPE_TOGGLE:
                     return launchTask(recents, getNextTask(recents), cmd);
+                case TYPE_HOME:
+                    recents.startHome();
+                    return true;
             }
         }
 
diff --git a/quickstep/src/com/android/quickstep/OverviewComponentObserver.java b/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
index 0efe666..780032e 100644
--- a/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
+++ b/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
@@ -33,8 +33,11 @@
 import android.content.pm.ActivityInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
+import android.os.SystemClock;
+import android.util.Log;
 import android.util.SparseIntArray;
 
+import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.tracing.OverviewComponentObserverProto;
 import com.android.launcher3.tracing.TouchInteractionServiceProto;
 import com.android.launcher3.util.SimpleBroadcastReceiver;
@@ -129,6 +132,16 @@
     private void updateOverviewTargets() {
         ComponentName defaultHome = PackageManagerWrapper.getInstance()
                 .getHomeActivities(new ArrayList<>());
+        if (TestProtocol.sDebugTracing && defaultHome == null) {
+            Log.d(TestProtocol.THIRD_PARTY_LAUNCHER_NOT_SET, "getHomeActivities returned null");
+            while ((defaultHome =
+                    PackageManagerWrapper.getInstance().getHomeActivities(new ArrayList<>()))
+                    == null) {
+                SystemClock.sleep(10);
+            }
+            Log.d(TestProtocol.THIRD_PARTY_LAUNCHER_NOT_SET,
+                    "getHomeActivities returned non-null: " + defaultHome);
+        }
 
         mIsHomeDisabled = mDeviceState.isHomeDisabled();
         mIsDefaultHome = Objects.equals(mMyHomeIntent.getComponent(), defaultHome);
diff --git a/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java b/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
index 39af0db..d531339 100644
--- a/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
+++ b/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
@@ -21,7 +21,7 @@
     }
 
     @Override
-    public Bundle call(String method) {
+    public Bundle call(String method, String arg) {
         final Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_ALL_APPS_TO_OVERVIEW_SWIPE_HEIGHT: {
@@ -66,7 +66,7 @@
             }
         }
 
-        return super.call(method);
+        return super.call(method, arg);
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/RecentsActivity.java b/quickstep/src/com/android/quickstep/RecentsActivity.java
index 9dfcd12..03e2395 100644
--- a/quickstep/src/com/android/quickstep/RecentsActivity.java
+++ b/quickstep/src/com/android/quickstep/RecentsActivity.java
@@ -22,8 +22,8 @@
 import static com.android.launcher3.QuickstepTransitionManager.STATUS_BAR_TRANSITION_DURATION;
 import static com.android.launcher3.QuickstepTransitionManager.STATUS_BAR_TRANSITION_PRE_DELAY;
 import static com.android.launcher3.Utilities.createHomeIntent;
-import static com.android.launcher3.graphics.SysUiScrim.SYSUI_PROGRESS;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
+import static com.android.launcher3.graphics.SysUiScrim.SYSUI_PROGRESS;
 import static com.android.launcher3.testing.TestProtocol.OVERVIEW_STATE_ORDINAL;
 import static com.android.quickstep.TaskUtils.taskIsATargetWithMode;
 import static com.android.quickstep.TaskViewUtils.createRecentsWindowAnimator;
@@ -75,7 +75,6 @@
 import com.android.quickstep.util.SplitSelectStateController;
 import com.android.quickstep.views.OverviewActionsView;
 import com.android.quickstep.views.RecentsView;
-import com.android.quickstep.views.SplitPlaceholderView;
 import com.android.quickstep.views.TaskView;
 import com.android.systemui.shared.system.ActivityOptionsCompat;
 import com.android.systemui.shared.system.RemoteAnimationAdapterCompat;
@@ -122,13 +121,10 @@
         mActionsView = findViewById(R.id.overview_actions_view);
         SYSUI_PROGRESS.set(getRootView().getSysUiScrim(), 0f);
 
-        SplitPlaceholderView splitPlaceholderView = findViewById(R.id.split_placeholder);
-        splitPlaceholderView.init(
-                new SplitSelectStateController(mUiHandler, SystemUiProxy.INSTANCE.get(this))
-        );
-
+        SplitSelectStateController controller =
+                new SplitSelectStateController(mHandler, SystemUiProxy.INSTANCE.get(this));
         mDragLayer.recreateControllers();
-        mFallbackRecentsView.init(mActionsView, splitPlaceholderView);
+        mFallbackRecentsView.init(mActionsView, controller);
     }
 
     @Override
@@ -290,7 +286,7 @@
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        mStateManager = new StateManager<>(this, RecentsState.DEFAULT);
+        mStateManager = new StateManager<>(this, RecentsState.BG_LAUNCHER);
 
         mOldConfig = new Configuration(getResources().getConfiguration());
         initDeviceProfile();
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
index a21c714..3c05a3e 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
@@ -16,19 +16,24 @@
 package com.android.quickstep;
 
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
+import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.ACTIVITY_TYPE_HOME;
 
 import android.graphics.Rect;
 import android.util.ArraySet;
+import android.util.Log;
+import android.view.RemoteAnimationTarget;
 
 import androidx.annotation.BinderThread;
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.Utilities;
+import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.Preconditions;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.RecentsAnimationControllerCompat;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
+import java.util.Arrays;
 import java.util.Set;
 
 /**
@@ -39,6 +44,7 @@
         com.android.systemui.shared.system.RecentsAnimationListener {
 
     private final Set<RecentsAnimationListener> mListeners = new ArraySet<>();
+    private final SystemUiProxy mSystemUiProxy;
     private final boolean mAllowMinimizeSplitScreen;
 
     // TODO(141886704): Remove these references when they are no longer needed
@@ -46,7 +52,9 @@
 
     private boolean mCancelled;
 
-    public RecentsAnimationCallbacks(boolean allowMinimizeSplitScreen) {
+    public RecentsAnimationCallbacks(SystemUiProxy systemUiProxy,
+            boolean allowMinimizeSplitScreen) {
+        mSystemUiProxy = systemUiProxy;
         mAllowMinimizeSplitScreen = allowMinimizeSplitScreen;
     }
 
@@ -89,8 +97,22 @@
             RemoteAnimationTargetCompat[] appTargets,
             RemoteAnimationTargetCompat[] wallpaperTargets,
             Rect homeContentInsets, Rect minimizedHomeBounds) {
+        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME, "RecentsAnimationCallbacks.onAnimationStart");
+        }
+        // Convert appTargets to type RemoteAnimationTarget for all apps except Home app
+        RemoteAnimationTarget[] nonHomeApps = Arrays.stream(appTargets)
+                .filter(remoteAnimationTarget ->
+                        remoteAnimationTarget.activityType != ACTIVITY_TYPE_HOME)
+                .map(RemoteAnimationTargetCompat::unwrap)
+                .toArray(RemoteAnimationTarget[]::new);
+
+        RemoteAnimationTarget[] nonAppTargets =
+                mSystemUiProxy.onGoingToRecentsLegacy(mCancelled, nonHomeApps);
+
         RecentsAnimationTargets targets = new RecentsAnimationTargets(appTargets,
-                wallpaperTargets, homeContentInsets, minimizedHomeBounds);
+                wallpaperTargets, RemoteAnimationTargetCompat.wrap(nonAppTargets),
+                homeContentInsets, minimizedHomeBounds);
         mController = new RecentsAnimationController(animationController,
                 mAllowMinimizeSplitScreen, this::onAnimationFinished);
 
@@ -99,6 +121,10 @@
                     mController::finishAnimationToApp);
         } else {
             Utilities.postAsyncCallback(MAIN_EXECUTOR.getHandler(), () -> {
+                if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+                    Log.d(TestProtocol.L3_SWIPE_TO_HOME,
+                            "RecentsAnimationCallbacks.onAnimationStart callback");
+                }
                 for (RecentsAnimationListener listener : getListeners()) {
                     listener.onRecentsAnimationStart(mController, targets);
                 }
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationController.java b/quickstep/src/com/android/quickstep/RecentsAnimationController.java
index 53b6675..f343485 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationController.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationController.java
@@ -46,6 +46,8 @@
     private boolean mUseLauncherSysBarFlags = false;
     private boolean mSplitScreenMinimized = false;
     private boolean mFinishRequested = false;
+    // Only valid when mFinishRequested == true.
+    private boolean mFinishTargetIsLauncher;
     private RunnableList mPendingFinishCallbacks = new RunnableList();
 
     public RecentsAnimationController(RecentsAnimationControllerCompat controller,
@@ -145,6 +147,7 @@
 
         // Finish not yet requested
         mFinishRequested = true;
+        mFinishTargetIsLauncher = toRecents;
         mOnFinishedListener.accept(this);
         mPendingFinishCallbacks.add(callback);
         UI_HELPER_EXECUTOR.execute(() -> {
@@ -217,4 +220,12 @@
     public RecentsAnimationControllerCompat getController() {
         return mController;
     }
+
+    /**
+     * RecentsAnimationListeners can check this in onRecentsAnimationFinished() to determine whether
+     * the animation was finished to launcher vs an app.
+     */
+    public boolean getFinishTargetIsLauncher() {
+        return mFinishTargetIsLauncher;
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationTargets.java b/quickstep/src/com/android/quickstep/RecentsAnimationTargets.java
index 3861bab..b6d9016 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationTargets.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationTargets.java
@@ -31,9 +31,9 @@
     public final Rect minimizedHomeBounds;
 
     public RecentsAnimationTargets(RemoteAnimationTargetCompat[] apps,
-            RemoteAnimationTargetCompat[] wallpapers, Rect homeContentInsets,
-            Rect minimizedHomeBounds) {
-        super(apps, wallpapers, new RemoteAnimationTargetCompat[0], MODE_CLOSING);
+            RemoteAnimationTargetCompat[] wallpapers, RemoteAnimationTargetCompat[] nonApps,
+            Rect homeContentInsets, Rect minimizedHomeBounds) {
+        super(apps, wallpapers, nonApps, MODE_CLOSING);
         this.homeContentInsets = homeContentInsets;
         this.minimizedHomeBounds = minimizedHomeBounds;
     }
diff --git a/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java b/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java
index c032889..b20d488 100644
--- a/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java
+++ b/quickstep/src/com/android/quickstep/RemoteAnimationTargets.java
@@ -77,8 +77,12 @@
      * Gets the navigation bar remote animation target if exists.
      */
     public RemoteAnimationTargetCompat getNavBarRemoteAnimationTarget() {
+        return getNonAppTargetOfType(TYPE_NAVIGATION_BAR);
+    }
+
+    public RemoteAnimationTargetCompat getNonAppTargetOfType(int type) {
         for (RemoteAnimationTargetCompat target : nonApps) {
-            if (target.windowType == TYPE_NAVIGATION_BAR) {
+            if (target.windowType == type) {
                 return target;
             }
         }
diff --git a/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java b/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
index 4495455..ec51599 100644
--- a/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
+++ b/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
@@ -15,9 +15,13 @@
  */
 package com.android.quickstep;
 
+import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
+
 import static com.android.launcher3.anim.Interpolators.ACCEL_1_5;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.launcher3.config.FeatureFlags.ENABLE_SPLIT_SELECT;
 import static com.android.launcher3.config.FeatureFlags.PROTOTYPE_APP_CLOSE;
+import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_CLOSING;
 
 import android.animation.Animator;
 import android.content.Context;
@@ -36,8 +40,11 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.quickstep.util.ActiveGestureLog;
 import com.android.quickstep.util.AnimatorControllerWithResistance;
 import com.android.quickstep.util.AppCloseConfig;
+import com.android.quickstep.util.LauncherSplitScreenListener;
 import com.android.quickstep.util.RectFSpringAnim;
 import com.android.quickstep.util.RectFSpringAnim2;
 import com.android.quickstep.util.TaskViewSimulator;
@@ -46,7 +53,11 @@
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 import com.android.systemui.shared.system.SyncRtSurfaceTransactionApplierCompat.SurfaceParams.Builder;
 
-public abstract class SwipeUpAnimationLogic {
+import java.util.Arrays;
+import java.util.function.Consumer;
+
+public abstract class SwipeUpAnimationLogic implements
+        RecentsAnimationCallbacks.RecentsAnimationListener{
 
     protected static final Rect TEMP_RECT = new Rect();
 
@@ -55,9 +66,9 @@
     protected final Context mContext;
     protected final RecentsAnimationDeviceState mDeviceState;
     protected final GestureState mGestureState;
-    protected final TaskViewSimulator mTaskViewSimulator;
 
-    protected final TransformParams mTransformParams;
+    protected final RemoteTargetHandle[] mRemoteTargetHandles;
+    protected SplitConfigurationOptions.StagedSplitBounds mStagedSplitBounds;
 
     // Shift in the range of [0, 1].
     // 0 => preview snapShot is completely visible, and hotseat is completely translated down
@@ -70,37 +81,56 @@
     // How much further we can drag past recents, as a factor of mTransitionDragLength.
     protected float mDragLengthFactor = 1;
 
-    protected AnimatorControllerWithResistance mWindowTransitionController;
+    protected boolean mIsSwipeForStagedSplit;
 
     public SwipeUpAnimationLogic(Context context, RecentsAnimationDeviceState deviceState,
             GestureState gestureState, TransformParams transformParams) {
         mContext = context;
         mDeviceState = deviceState;
         mGestureState = gestureState;
-        mTaskViewSimulator = new TaskViewSimulator(context, gestureState.getActivityInterface());
-        mTransformParams = transformParams;
 
-        mTaskViewSimulator.getOrientationState().update(
+        mIsSwipeForStagedSplit = ENABLE_SPLIT_SELECT.get() &&
+                LauncherSplitScreenListener.INSTANCE.getNoCreate().getSplitTaskIds().length > 1;
+
+        TaskViewSimulator primaryTVS = new TaskViewSimulator(context,
+                gestureState.getActivityInterface());
+        primaryTVS.getOrientationState().update(
                 mDeviceState.getRotationTouchHelper().getCurrentActiveRotation(),
                 mDeviceState.getRotationTouchHelper().getDisplayRotation());
+        mRemoteTargetHandles = new RemoteTargetHandle[mIsSwipeForStagedSplit ? 2 : 1];
+        mRemoteTargetHandles[0] = new RemoteTargetHandle(primaryTVS, transformParams);
+
+        if (mIsSwipeForStagedSplit) {
+            TaskViewSimulator secondaryTVS = new TaskViewSimulator(context,
+                    gestureState.getActivityInterface());
+            secondaryTVS.getOrientationState().update(
+                    mDeviceState.getRotationTouchHelper().getCurrentActiveRotation(),
+                    mDeviceState.getRotationTouchHelper().getDisplayRotation());
+            mRemoteTargetHandles[1] = new RemoteTargetHandle(secondaryTVS, new TransformParams());
+        }
     }
 
     protected void initTransitionEndpoints(DeviceProfile dp) {
         mDp = dp;
-
-        mTaskViewSimulator.setDp(dp);
         mTransitionDragLength = mGestureState.getActivityInterface().getSwipeUpDestinationAndLength(
-                dp, mContext, TEMP_RECT,
-                mTaskViewSimulator.getOrientationState().getOrientationHandler());
+                dp, mContext, TEMP_RECT, mRemoteTargetHandles[0].mTaskViewSimulator
+                        .getOrientationState().getOrientationHandler());
         mDragLengthFactor = (float) dp.heightPx / mTransitionDragLength;
 
-        PendingAnimation pa = new PendingAnimation(mTransitionDragLength * 2);
-        mTaskViewSimulator.addAppToOverviewAnim(pa, LINEAR);
-        AnimatorPlaybackController normalController = pa.createPlaybackController();
-        mWindowTransitionController = AnimatorControllerWithResistance.createForRecents(
-                normalController, mContext, mTaskViewSimulator.getOrientationState(),
-                mDp, mTaskViewSimulator.recentsViewScale, AnimatedFloat.VALUE,
-                mTaskViewSimulator.recentsViewSecondaryTranslation, AnimatedFloat.VALUE);
+        for (RemoteTargetHandle remoteHandle : mRemoteTargetHandles) {
+            PendingAnimation pendingAnimation = new PendingAnimation(mTransitionDragLength * 2);
+            TaskViewSimulator taskViewSimulator = remoteHandle.mTaskViewSimulator;
+            taskViewSimulator.setDp(dp);
+            taskViewSimulator.addAppToOverviewAnim(pendingAnimation, LINEAR);
+            AnimatorPlaybackController playbackController =
+                    pendingAnimation.createPlaybackController();
+
+            remoteHandle.mPlaybackController = AnimatorControllerWithResistance.createForRecents(
+                    playbackController, mContext, taskViewSimulator.getOrientationState(),
+                    mDp, taskViewSimulator.recentsViewScale, AnimatedFloat.VALUE,
+                    taskViewSimulator.recentsViewSecondaryTranslation, AnimatedFloat.VALUE
+            );
+        }
     }
 
     @UiThread
@@ -125,7 +155,9 @@
     public abstract void updateFinalShift();
 
     protected PagedOrientationHandler getOrientationHandler() {
-        return mTaskViewSimulator.getOrientationState().getOrientationHandler();
+        // OrientationHandler should be independent of remote target, can directly take one
+        return mRemoteTargetHandles[0].mTaskViewSimulator
+                .getOrientationState().getOrientationHandler();
     }
 
     protected abstract class HomeAnimationFactory {
@@ -207,31 +239,102 @@
      * @param startProgress The progress of {@link #mCurrentShift} to start thw window from.
      * @return {@link RectF} represents the bounds as starting point in window space.
      */
-    protected RectF updateProgressForStartRect(Matrix outMatrix, float startProgress) {
+    protected RectF[] updateProgressForStartRect(Matrix outMatrix, float startProgress) {
         mCurrentShift.updateValue(startProgress);
-        mTaskViewSimulator.apply(mTransformParams.setProgress(startProgress));
-        RectF cropRectF = new RectF(mTaskViewSimulator.getCurrentCropRect());
+        RectF[] startRects = new RectF[mRemoteTargetHandles.length];
+        for (int i = 0, mRemoteTargetHandlesLength = mRemoteTargetHandles.length;
+                i < mRemoteTargetHandlesLength; i++) {
+            RemoteTargetHandle remoteHandle = mRemoteTargetHandles[i];
+            TaskViewSimulator tvs = remoteHandle.mTaskViewSimulator;
+            tvs.apply(remoteHandle.mTransformParams.setProgress(startProgress));
 
-        mTaskViewSimulator.applyWindowToHomeRotation(outMatrix);
-
-        final RectF startRect = new RectF(cropRectF);
-        mTaskViewSimulator.getCurrentMatrix().mapRect(startRect);
-        return startRect;
+            startRects[i] = new RectF(tvs.getCurrentCropRect());
+            tvs.applyWindowToHomeRotation(outMatrix);
+            tvs.getCurrentMatrix().mapRect(startRects[i]);
+        }
+        return startRects;
     }
 
+    /** Helper to avoid writing some for-loops to iterate over {@link #mRemoteTargetHandles} */
+    protected void runActionOnRemoteHandles(Consumer<RemoteTargetHandle> consumer) {
+        for (RemoteTargetHandle handle : mRemoteTargetHandles) {
+            consumer.accept(handle);
+        }
+    }
+
+    /** @return only the TaskViewSimulators from {@link #mRemoteTargetHandles} */
+    protected TaskViewSimulator[] getRemoteTaskViewSimulators() {
+        return Arrays.stream(mRemoteTargetHandles)
+                .map(remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator)
+                .toArray(TaskViewSimulator[]::new);
+    }
+
+    @Override
+    public void onRecentsAnimationStart(RecentsAnimationController controller,
+            RecentsAnimationTargets targets) {
+        ActiveGestureLog.INSTANCE.addLog("startRecentsAnimationCallback", targets.apps.length);
+        RemoteAnimationTargetCompat dividerTarget = targets.getNonAppTargetOfType(
+                TYPE_DOCK_DIVIDER);
+        RemoteAnimationTargetCompat primaryTaskTarget;
+        RemoteAnimationTargetCompat secondaryTaskTarget;
+
+        if (!mIsSwipeForStagedSplit) {
+            primaryTaskTarget = targets.findTask(mGestureState.getRunningTaskId());
+            mRemoteTargetHandles[0].mTransformParams.setTargetSet(targets);
+
+            if (primaryTaskTarget != null) {
+                mRemoteTargetHandles[0].mTaskViewSimulator.setPreview(primaryTaskTarget);
+            }
+        } else {
+            // We're in staged split
+            primaryTaskTarget = targets.apps[0];
+            secondaryTaskTarget = targets.apps[1];
+            mStagedSplitBounds = new SplitConfigurationOptions.StagedSplitBounds(
+                    primaryTaskTarget.screenSpaceBounds,
+                    secondaryTaskTarget.screenSpaceBounds, dividerTarget.screenSpaceBounds);
+            mRemoteTargetHandles[0].mTaskViewSimulator.setPreview(primaryTaskTarget,
+                    mStagedSplitBounds);
+            mRemoteTargetHandles[1].mTaskViewSimulator.setPreview(secondaryTaskTarget,
+                    mStagedSplitBounds);
+            mRemoteTargetHandles[0].mTransformParams.setTargetSet(
+                    createRemoteAnimationTargetsForTarget(primaryTaskTarget));
+            mRemoteTargetHandles[1].mTransformParams.setTargetSet(
+                    createRemoteAnimationTargetsForTarget(secondaryTaskTarget));
+        }
+    }
+
+    private RemoteAnimationTargets createRemoteAnimationTargetsForTarget(
+            RemoteAnimationTargetCompat target) {
+        return new RemoteAnimationTargets(new RemoteAnimationTargetCompat[]{target},
+                null, null, MODE_CLOSING);
+    }
     /**
      * Creates an animation that transforms the current app window into the home app.
      * @param startProgress The progress of {@link #mCurrentShift} to start the window from.
      * @param homeAnimationFactory The home animation factory.
      */
-    protected RectFSpringAnim createWindowAnimationToHome(float startProgress,
+    protected RectFSpringAnim[] createWindowAnimationToHome(float startProgress,
             HomeAnimationFactory homeAnimationFactory) {
+        // TODO(b/195473584) compute separate end targets for different staged split
         final RectF targetRect = homeAnimationFactory.getWindowTargetRect();
-
+        RectFSpringAnim[] out = new RectFSpringAnim[mRemoteTargetHandles.length];
         Matrix homeToWindowPositionMap = new Matrix();
-        final RectF startRect = updateProgressForStartRect(homeToWindowPositionMap, startProgress);
-        RectF cropRectF = new RectF(mTaskViewSimulator.getCurrentCropRect());
+        RectF[] startRects = updateProgressForStartRect(homeToWindowPositionMap, startProgress);
+        for (int i = 0, mRemoteTargetHandlesLength = mRemoteTargetHandles.length;
+                i < mRemoteTargetHandlesLength; i++) {
+            RemoteTargetHandle remoteHandle = mRemoteTargetHandles[i];
+            out[i] = getWindowAnimationToHomeInternal(homeAnimationFactory,
+                    targetRect, remoteHandle.mTransformParams, remoteHandle.mTaskViewSimulator,
+                    startRects[i], homeToWindowPositionMap);
+        }
+        return out;
+    }
 
+    private RectFSpringAnim getWindowAnimationToHomeInternal(
+            HomeAnimationFactory homeAnimationFactory, RectF targetRect,
+            TransformParams transformParams, TaskViewSimulator taskViewSimulator,
+            RectF startRect, Matrix homeToWindowPositionMap) {
+        RectF cropRectF = new RectF(taskViewSimulator.getCurrentCropRect());
         // Move the startRect to Launcher space as floatingIconView runs in Launcher
         Matrix windowToHomePositionMap = new Matrix();
         homeToWindowPositionMap.invert(windowToHomePositionMap);
@@ -240,7 +343,7 @@
         RectFSpringAnim anim;
         if (PROTOTYPE_APP_CLOSE.get()) {
             anim = new RectFSpringAnim2(startRect, targetRect, mContext,
-                    mTaskViewSimulator.getCurrentCornerRadius(),
+                    taskViewSimulator.getCurrentCornerRadius(),
                     homeAnimationFactory.getEndRadius(cropRectF));
         } else {
             anim = new RectFSpringAnim(startRect, targetRect, mContext);
@@ -248,9 +351,10 @@
         homeAnimationFactory.setAnimation(anim);
 
         SpringAnimationRunner runner = new SpringAnimationRunner(
-                homeAnimationFactory, cropRectF, homeToWindowPositionMap);
-        anim.addOnUpdateListener(runner);
+                homeAnimationFactory, cropRectF, homeToWindowPositionMap,
+                transformParams, taskViewSimulator);
         anim.addAnimatorListener(runner);
+        anim.addOnUpdateListener(runner);
         return anim;
     }
 
@@ -262,6 +366,7 @@
 
         final RectF mWindowCurrentRect = new RectF();
         final Matrix mHomeToWindowPositionMap;
+        private final TransformParams mLocalTransformParams;
         final HomeAnimationFactory mAnimationFactory;
 
         final AnimatorPlaybackController mHomeAnim;
@@ -271,17 +376,19 @@
         final float mEndRadius;
 
         SpringAnimationRunner(HomeAnimationFactory factory, RectF cropRectF,
-                Matrix homeToWindowPositionMap) {
+                Matrix homeToWindowPositionMap, TransformParams transformParams,
+                TaskViewSimulator taskViewSimulator) {
             mAnimationFactory = factory;
             mHomeAnim = factory.createActivityAnimationToHome();
             mCropRectF = cropRectF;
             mHomeToWindowPositionMap = homeToWindowPositionMap;
+            mLocalTransformParams = transformParams;
 
             cropRectF.roundOut(mCropRect);
 
             // End on a "round-enough" radius so that the shape reveal doesn't have to do too much
             // rounding at the end of the animation.
-            mStartRadius = mTaskViewSimulator.getCurrentCornerRadius();
+            mStartRadius = taskViewSimulator.getCurrentCornerRadius();
             mEndRadius = factory.getEndRadius(cropRectF);
         }
 
@@ -300,10 +407,11 @@
             if (mAnimationFactory.keepWindowOpaque()) {
                 alpha = 1f;
             }
-            mTransformParams
+            mLocalTransformParams
                     .setTargetAlpha(alpha)
                     .setCornerRadius(cornerRadius);
-            mTransformParams.applySurfaceParams(mTransformParams.createSurfaceParams(this));
+            mLocalTransformParams.applySurfaceParams(mLocalTransformParams
+                    .createSurfaceParams(this));
             mAnimationFactory.update(config, currentRect, progress,
                     mMatrix.mapRadius(cornerRadius));
         }
@@ -332,6 +440,21 @@
         }
     }
 
+    /**
+     * Container to keep together all the associated objects whose properties need to be updated to
+     * animate a single remote app target
+     */
+    public static class RemoteTargetHandle {
+        public TaskViewSimulator mTaskViewSimulator;
+        public TransformParams mTransformParams;
+        public AnimatorControllerWithResistance mPlaybackController;
+        public RemoteTargetHandle(TaskViewSimulator taskViewSimulator,
+                TransformParams transformParams) {
+            mTransformParams = transformParams;
+            mTaskViewSimulator = taskViewSimulator;
+        }
+    }
+
     public interface RunningWindowAnim {
         void end();
 
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index d040904..7d2d413 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -17,6 +17,7 @@
 
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 
+import android.app.ActivityManager;
 import android.app.PendingIntent;
 import android.app.PictureInPictureParams;
 import android.content.ComponentName;
@@ -33,6 +34,8 @@
 import android.os.UserHandle;
 import android.util.Log;
 import android.view.MotionEvent;
+import android.view.RemoteAnimationAdapter;
+import android.view.RemoteAnimationTarget;
 import android.view.SurfaceControl;
 
 import com.android.launcher3.util.MainThreadInitializedObject;
@@ -85,6 +88,7 @@
     private float mLastNavButtonAlpha;
     private boolean mLastNavButtonAnimate;
     private boolean mHasNavButtonAlphaBeenSet = false;
+    private Runnable mPendingSetNavButtonAlpha = null;
 
     // TODO(141886704): Find a way to remove this
     private int mLastSystemUiStateFlags;
@@ -157,6 +161,11 @@
             setSmartspaceCallback(mPendingSmartspaceCallback);
             mPendingSmartspaceCallback = null;
         }
+
+        if (mPendingSetNavButtonAlpha != null) {
+            mPendingSetNavButtonAlpha.run();
+            mPendingSetNavButtonAlpha = null;
+        }
     }
 
     public void clearProxy() {
@@ -240,14 +249,18 @@
         boolean changed = Float.compare(alpha, mLastNavButtonAlpha) != 0
                 || animate != mLastNavButtonAnimate
                 || !mHasNavButtonAlphaBeenSet;
-        if (mSystemUiProxy != null && changed) {
-            mLastNavButtonAlpha = alpha;
-            mLastNavButtonAnimate = animate;
-            mHasNavButtonAlphaBeenSet = true;
-            try {
-                mSystemUiProxy.setNavBarButtonAlpha(alpha, animate);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call setNavBarButtonAlpha", e);
+        if (changed) {
+            if (mSystemUiProxy == null) {
+                mPendingSetNavButtonAlpha = () -> setNavBarButtonAlpha(alpha, animate);
+            } else {
+                mLastNavButtonAlpha = alpha;
+                mLastNavButtonAnimate = animate;
+                mHasNavButtonAlphaBeenSet = true;
+                try {
+                    mSystemUiProxy.setNavBarButtonAlpha(alpha, animate);
+                } catch (RemoteException e) {
+                    Log.w(TAG, "Failed call setNavBarButtonAlpha", e);
+                }
             }
         }
     }
@@ -346,7 +359,7 @@
             try {
                 mSystemUiProxy.setSplitScreenMinimized(minimized);
             } catch (RemoteException e) {
-                Log.w(TAG, "Failed call stopScreenPinning", e);
+                Log.w(TAG, "Failed call setSplitScreenMinimized", e);
             }
         }
     }
@@ -388,6 +401,18 @@
     }
 
     @Override
+    public void notifyTaskbarStatus(boolean visible, boolean stashed) {
+        if (mSystemUiProxy != null) {
+            try {
+                mSystemUiProxy.notifyTaskbarStatus(visible, stashed);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call notifyTaskbarStatus with arg: " +
+                        visible + ", " + stashed, e);
+            }
+        }
+    }
+
+    @Override
     public void handleImageBundleAsScreenshot(Bundle screenImageBundle, Rect locationInScreen,
             Insets visibleInsets, Task.TaskKey task) {
         if (mSystemUiProxy != null) {
@@ -552,6 +577,22 @@
         }
     }
 
+    /**
+     * Start multiple tasks in split-screen simultaneously.
+     */
+    public void startTasksWithLegacyTransition(int mainTaskId, Bundle mainOptions, int sideTaskId,
+            Bundle sideOptions, @SplitConfigurationOptions.StagePosition int sidePosition,
+            RemoteAnimationAdapter adapter) {
+        if (mSystemUiProxy != null) {
+            try {
+                mSplitScreen.startTasksWithLegacyTransition(mainTaskId, mainOptions, sideTaskId,
+                        sideOptions, sidePosition, adapter);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call startTasksWithLegacyTransition");
+            }
+        }
+    }
+
     public void startShortcut(String packageName, String shortcutId, int stage, int position,
             Bundle options, UserHandle user) {
         if (mSplitScreen != null) {
@@ -585,6 +626,25 @@
         }
     }
 
+    /**
+     * Call this when going to recents so that shell can set-up and provide appropriate leashes
+     * for animation (eg. DividerBar).
+     *
+     * @param cancel true if recents starting is being cancelled.
+     * @return RemoteAnimationTargets of windows that need to animate but only exist in shell.
+     */
+    public RemoteAnimationTarget[] onGoingToRecentsLegacy(boolean cancel,
+            RemoteAnimationTarget[] apps) {
+        if (mSplitScreen != null) {
+            try {
+                return mSplitScreen.onGoingToRecentsLegacy(cancel, apps);
+            } catch (RemoteException e) {
+                Log.w(TAG, "Failed call onGoingToRecentsLegacy");
+            }
+        }
+        return null;
+    }
+
     //
     // One handed
     //
diff --git a/quickstep/src/com/android/quickstep/TaskAnimationManager.java b/quickstep/src/com/android/quickstep/TaskAnimationManager.java
index 67bd85f..fe07cbd 100644
--- a/quickstep/src/com/android/quickstep/TaskAnimationManager.java
+++ b/quickstep/src/com/android/quickstep/TaskAnimationManager.java
@@ -28,6 +28,7 @@
 import android.os.SystemProperties;
 import android.util.Log;
 
+import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.Utilities;
@@ -108,7 +109,8 @@
 
         final BaseActivityInterface activityInterface = gestureState.getActivityInterface();
         mLastGestureState = gestureState;
-        mCallbacks = new RecentsAnimationCallbacks(activityInterface.allowMinimizeSplitScreen());
+        mCallbacks = new RecentsAnimationCallbacks(SystemUiProxy.INSTANCE.get(mCtx),
+                activityInterface.allowMinimizeSplitScreen());
         mCallbacks.addListener(new RecentsAnimationCallbacks.RecentsAnimationListener() {
             @Override
             public void onRecentsAnimationStart(RecentsAnimationController controller,
@@ -262,6 +264,11 @@
         mLastAppearedTaskTarget = null;
     }
 
+    @Nullable
+    public RecentsAnimationCallbacks getCurrentCallbacks() {
+        return mCallbacks;
+    }
+
     public void dump() {
         // TODO
     }
diff --git a/quickstep/src/com/android/quickstep/TaskOverlayFactory.java b/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
index e75d751..f49c9b0 100644
--- a/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
+++ b/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
@@ -68,13 +68,14 @@
         final BaseDraggingActivity activity = BaseActivity.fromContext(taskView.getContext());
         for (TaskShortcutFactory menuOption : MENU_OPTIONS) {
             SystemShortcut shortcut = menuOption.getShortcut(activity, taskView);
-            if (menuOption == TaskShortcutFactory.SPLIT_SCREEN &&
-                    FeatureFlags.ENABLE_SPLIT_SELECT.get()) {
-                addSplitOptions(shortcuts, activity, taskView, deviceProfile);
+            if (shortcut == null) {
                 continue;
             }
 
-            if (shortcut != null) {
+            if (menuOption == TaskShortcutFactory.SPLIT_SCREEN &&
+                    FeatureFlags.ENABLE_SPLIT_SELECT.get()) {
+                addSplitOptions(shortcuts, activity, taskView, deviceProfile);
+            } else {
                 shortcuts.add(shortcut);
             }
         }
@@ -88,7 +89,6 @@
             SystemShortcut screenshotShortcut = TaskShortcutFactory.SCREENSHOT
                     .getShortcut(activity, taskView);
             if (screenshotShortcut != null) {
-                screenshotShortcut.setHasFinishRecentsInAction(true);
                 shortcuts.add(screenshotShortcut);
             }
 
@@ -97,7 +97,6 @@
                 SystemShortcut modalShortcut = TaskShortcutFactory.MODAL
                         .getShortcut(activity, taskView);
                 if (modalShortcut != null) {
-                    modalShortcut.setHasFinishRecentsInAction(true);
                     shortcuts.add(modalShortcut);
                 }
             }
@@ -184,6 +183,13 @@
         }
 
         /**
+         * Called when the current task's thumbnail has changed.
+         */
+        public void refreshActionVisibility(ThumbnailData thumbnail) {
+            getActionsView().updateDisabledFlags(DISABLED_NO_THUMBNAIL, thumbnail == null);
+        }
+
+        /**
          * End rendering live tile in Overview.
          *
          * @param callback callback to run, after switching to screenshot
diff --git a/quickstep/src/com/android/quickstep/TaskViewUtils.java b/quickstep/src/com/android/quickstep/TaskViewUtils.java
index 37fda73..5b9e214 100644
--- a/quickstep/src/com/android/quickstep/TaskViewUtils.java
+++ b/quickstep/src/com/android/quickstep/TaskViewUtils.java
@@ -15,6 +15,7 @@
  */
 package com.android.quickstep;
 
+import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
 import static android.view.WindowManager.TRANSIT_OPEN;
 import static android.view.WindowManager.TRANSIT_TO_FRONT;
 
@@ -62,7 +63,6 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.anim.PendingAnimation;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.statemanager.StateManager;
@@ -139,7 +139,7 @@
 
         // If the opening task id is not currently visible in overview, then fall back to normal app
         // icon launch animation
-        TaskView taskView = recentsView.getTaskView(openingTaskId);
+        TaskView taskView = recentsView.getTaskViewByTaskId(openingTaskId);
         if (taskView == null || !recentsView.isTaskViewVisible(taskView)) {
             return null;
         }
@@ -154,9 +154,10 @@
         boolean isRunningTask = v.isRunningTask();
         TransformParams params = null;
         TaskViewSimulator tsv = null;
+        // TODO(b/195675206) handle two TSVs here
         if (ENABLE_QUICKSTEP_LIVE_TILE.get() && isRunningTask) {
-            params = v.getRecentsView().getLiveTileParams();
-            tsv = v.getRecentsView().getLiveTileTaskViewSimulator();
+            params = v.getRecentsView().getRemoteTargetHandles()[0].mTransformParams;
+            tsv = v.getRecentsView().getRemoteTargetHandles()[0].mTaskViewSimulator;
         }
         createRecentsWindowAnimator(v, skipViewChanges, appTargets, wallpaperTargets, nonAppTargets,
                 depthController, out, params, tsv);
@@ -195,7 +196,7 @@
         int taskIndex = recentsView.indexOfChild(v);
         Context context = v.getContext();
         DeviceProfile dp = BaseActivity.fromContext(context).getDeviceProfile();
-        boolean showAsGrid = dp.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get();
+        boolean showAsGrid = dp.overviewShowAsGrid;
         boolean parallaxCenterAndAdjacentTask =
                 taskIndex != recentsView.getCurrentPage() && !showAsGrid;
         float gridTranslationSecondary = recentsView.getGridTranslationSecondary(taskIndex);
@@ -405,77 +406,39 @@
     }
 
     /** Legacy version (until shell transitions are enabled) */
-    public static void composeRecentsSplitLaunchAnimatorLegacy(@NonNull AnimatorSet anim,
+    public static void composeRecentsSplitLaunchAnimatorLegacy(@NonNull TaskView initialView,
             @NonNull TaskView v, @NonNull RemoteAnimationTargetCompat[] appTargets,
             @NonNull RemoteAnimationTargetCompat[] wallpaperTargets,
-            @NonNull RemoteAnimationTargetCompat[] nonAppTargets, boolean launcherClosing,
-            @NonNull StateManager stateManager, @NonNull DepthController depthController,
-            int targetStage) {
-        PendingAnimation out = new PendingAnimation(RECENTS_LAUNCH_DURATION);
-        boolean isRunningTask = v.isRunningTask();
-        TransformParams params = null;
-        TaskViewSimulator tvs = null;
-        RecentsView recentsView = v.getRecentsView();
-        if (ENABLE_QUICKSTEP_LIVE_TILE.get() && isRunningTask) {
-            params = recentsView.getLiveTileParams();
-            tvs = recentsView.getLiveTileTaskViewSimulator();
+            @NonNull RemoteAnimationTargetCompat[] nonAppTargets,
+            @NonNull Runnable finishCallback) {
+
+        final int[] splitRoots = new int[2];
+        for (int i = 0; i < appTargets.length; ++i) {
+            final int taskId = appTargets[i].taskInfo != null ? appTargets[i].taskInfo.taskId : -1;
+            final int mode = appTargets[i].mode;
+            if (taskId == initialView.getTask().key.id || taskId == v.getTask().key.id) {
+                if (mode != MODE_OPENING) {
+                    throw new IllegalStateException(
+                            "Expected task to be opening, but it is " + mode);
+                }
+                splitRoots[taskId == initialView.getTask().key.id ? 0 : 1] = i;
+            }
         }
 
-        boolean inLiveTileMode =
-                ENABLE_QUICKSTEP_LIVE_TILE.get() && recentsView.getRunningTaskIndex() != -1;
-        final RemoteAnimationTargets targets =
-                new RemoteAnimationTargets(appTargets, wallpaperTargets, nonAppTargets,
-                        inLiveTileMode ? MODE_CLOSING : MODE_OPENING);
+        SurfaceControl.Transaction t = new SurfaceControl.Transaction();
 
-        if (params == null) {
-            SurfaceTransactionApplier applier = new SurfaceTransactionApplier(v);
-            targets.addReleaseCheck(applier);
-
-            params = new TransformParams()
-                    .setSyncTransactionApplier(applier)
-                    .setTargetSet(targets);
+        // This is where we should animate the split roots. For now, though, just make them visible.
+        for (int i = 0; i < 2; ++i) {
+            t.show(appTargets[splitRoots[i]].leash.getSurfaceControl());
+            t.setAlpha(appTargets[splitRoots[i]].leash.getSurfaceControl(), 1.f);
         }
 
-        Rect crop = new Rect();
-        Context context = v.getContext();
-        DeviceProfile dp = BaseActivity.fromContext(context).getDeviceProfile();
-        if (tvs == null && targets.apps.length > 0) {
-            tvs = new TaskViewSimulator(recentsView.getContext(), recentsView.getSizeStrategy());
-            tvs.setDp(dp);
+        // This contains the initial state (before animation), so apply this at the beginning of
+        // the animation.
+        t.apply();
 
-            // RecentsView never updates the display rotation until swipe-up so the value may
-            // be stale. Use the display value instead.
-            int displayRotation = DisplayController.INSTANCE.get(recentsView.getContext())
-                    .getInfo().rotation;
-            tvs.getOrientationState().update(displayRotation, displayRotation);
-
-            tvs.setPreview(targets.apps[targets.apps.length - 1]);
-            tvs.fullScreenProgress.value = 0;
-            tvs.recentsViewScale.value = 1;
-//            tvs.setScroll(startScroll);
-
-            // Fade in the task during the initial 20% of the animation
-            out.addFloat(params, TransformParams.TARGET_ALPHA, 0, 1,
-                    clampToProgress(LINEAR, 0, 0.2f));
-        }
-
-        TaskViewSimulator topMostSimulator = null;
-
-        if (tvs != null) {
-            out.setFloat(tvs.fullScreenProgress,
-                    AnimatedFloat.VALUE, 1, TOUCH_RESPONSE_INTERPOLATOR);
-            out.setFloat(tvs.recentsViewScale,
-                    AnimatedFloat.VALUE, tvs.getFullScreenScale(), TOUCH_RESPONSE_INTERPOLATOR);
-            out.setFloat(tvs.recentsViewScroll,
-                    AnimatedFloat.VALUE, 0, TOUCH_RESPONSE_INTERPOLATOR);
-
-            TaskViewSimulator finalTsv = tvs;
-            TransformParams finalParams = params;
-            out.addOnFrameCallback(() -> finalTsv.apply(finalParams));
-            topMostSimulator = tvs;
-        }
-
-        anim.play(out.buildAnim());
+        // Once there is an animation, this should be called AFTER the animation completes.
+        finishCallback.run();
     }
 
     public static void composeRecentsLaunchAnimator(@NonNull AnimatorSet anim, @NonNull View v,
@@ -490,6 +453,10 @@
         PendingAnimation pa = new PendingAnimation(RECENTS_LAUNCH_DURATION);
         createRecentsWindowAnimator(taskView, skipLauncherChanges, appTargets, wallpaperTargets,
                 nonAppTargets, depthController, pa);
+        if (launcherClosing) {
+            // TODO(b/182592057): differentiate between "restore split" vs "launch fullscreen app"
+            TaskViewUtils.setDividerBarShown(nonAppTargets, true);
+        }
 
         Animator childStateAnimation = null;
         // Found a visible recents task that matches the opening app, lets launch the app from there
@@ -498,7 +465,7 @@
         if (launcherClosing) {
             Context context = v.getContext();
             DeviceProfile dp = BaseActivity.fromContext(context).getDeviceProfile();
-            launcherAnim = dp.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()
+            launcherAnim = dp.overviewShowAsGrid
                     ? ObjectAnimator.ofFloat(recentsView, RecentsView.CONTENT_ALPHA, 0)
                     : recentsView.createAdjacentPageAnimForTaskLaunch(taskView);
             launcherAnim.setInterpolator(Interpolators.TOUCH_RESPONSE_INTERPOLATOR);
@@ -542,4 +509,19 @@
         stateManager.setCurrentAnimation(anim, childStateAnimation);
         anim.addListener(windowAnimEndListener);
     }
+
+    static void setDividerBarShown(RemoteAnimationTargetCompat[] nonApps, boolean shown) {
+        // TODO(b/182592057): make this part of the animations instead.
+        if (nonApps != null && nonApps.length > 0) {
+            for (int i = 0; i < nonApps.length; ++i) {
+                final RemoteAnimationTargetCompat targ = nonApps[i];
+                if (targ.windowType == TYPE_DOCK_DIVIDER) {
+                    SurfaceControl.Transaction t = new SurfaceControl.Transaction();
+                    t.setVisibility(targ.leash.getSurfaceControl(), shown);
+                    t.apply();
+                    t.close();
+                }
+            }
+        }
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index db5c93c..20eff34 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -96,9 +96,12 @@
 import com.android.quickstep.inputconsumers.ResetGestureInputConsumer;
 import com.android.quickstep.inputconsumers.ScreenPinnedInputConsumer;
 import com.android.quickstep.inputconsumers.SysUiOverlayInputConsumer;
+import com.android.quickstep.inputconsumers.TaskbarStashInputConsumer;
 import com.android.quickstep.util.ActiveGestureLog;
 import com.android.quickstep.util.AssistantUtilities;
+import com.android.quickstep.util.LauncherSplitScreenListener;
 import com.android.quickstep.util.ProtoTracer;
+import com.android.quickstep.util.ProxyScreenStatusProvider;
 import com.android.quickstep.util.SplitScreenBounds;
 import com.android.systemui.plugins.OverscrollPlugin;
 import com.android.systemui.plugins.PluginListener;
@@ -262,16 +265,41 @@
         }
 
         @Override
-        public void onSplitScreenSecondaryBoundsChanged(Rect bounds, Rect insets)  {
+        public void onSplitScreenSecondaryBoundsChanged(Rect bounds, Rect insets) {
             WindowBounds wb = new WindowBounds(bounds, insets);
             MAIN_EXECUTOR.execute(() -> SplitScreenBounds.INSTANCE.setSecondaryWindowBounds(wb));
         }
 
+        @BinderThread
         @Override
-        public void onImeWindowStatusChanged(int displayId, IBinder token, int vis,
-                int backDisposition, boolean showImeSwitcher) {
-            MAIN_EXECUTOR.execute(() -> mTaskbarManager.updateImeStatus(
-                    displayId, vis, backDisposition, showImeSwitcher));
+        public void onScreenTurnedOn() {
+            MAIN_EXECUTOR.execute(ProxyScreenStatusProvider.INSTANCE::onScreenTurnedOn);
+        }
+
+        @Override
+        public void onRotationProposal(int rotation, boolean isValid) {
+            executeForTaskbarManager(() -> mTaskbarManager.onRotationProposal(rotation, isValid));
+        }
+
+        @Override
+        public void disable(int displayId, int state1, int state2, boolean animate) {
+            executeForTaskbarManager(() -> mTaskbarManager
+                    .disableNavBarElements(displayId, state1, state2, animate));
+        }
+
+        @Override
+        public void onSystemBarAttributesChanged(int displayId, int behavior) {
+            executeForTaskbarManager(() -> mTaskbarManager
+                    .onSystemBarAttributesChanged(displayId, behavior));
+        }
+
+        private void executeForTaskbarManager(final Runnable r) {
+            MAIN_EXECUTOR.execute(() -> {
+                if (mTaskbarManager == null) {
+                    return;
+                }
+                r.run();
+            });
         }
 
         public TaskbarManager getTaskbarManager() {
@@ -291,7 +319,6 @@
         return sConnected;
     }
 
-
     public static boolean isInitialized() {
         return sIsInitialized;
     }
@@ -338,6 +365,7 @@
         mDeviceState.runOnUserUnlocked(this::onUserUnlocked);
         mDeviceState.runOnUserUnlocked(mTaskbarManager::onUserUnlocked);
         ProtoTracer.INSTANCE.get(this).add(this);
+        LauncherSplitScreenListener.INSTANCE.get(this).init();
         sConnected = true;
     }
 
@@ -494,6 +522,7 @@
         getSystemService(AccessibilityManager.class)
                 .unregisterSystemAction(SYSTEM_ACTION_ID_ALL_APPS);
 
+        LauncherSplitScreenListener.INSTANCE.get(this).destroy();
         mTaskbarManager.destroy();
         sConnected = false;
         super.onDestroy();
@@ -658,6 +687,14 @@
                         mDeviceState, event);
             }
 
+            // If Taskbar is present, we listen for long press to unstash it.
+            BaseActivityInterface activityInterface = newGestureState.getActivityInterface();
+            StatefulActivity activity = activityInterface.getCreatedActivity();
+            if (activity != null && activity.getDeviceProfile().isTaskbarPresent) {
+                base = new TaskbarStashInputConsumer(this, base, mInputMonitorCompat,
+                        mTaskbarManager.getCurrentActivityContext());
+            }
+
             if (FeatureFlags.ENABLE_QUICK_CAPTURE_GESTURE.get()) {
                 OverscrollPlugin plugin = null;
                 if (FeatureFlags.FORCE_LOCAL_OVERSCROLL_PLUGIN.get()) {
diff --git a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
index f0364eb..50b69dc 100644
--- a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
+++ b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
@@ -15,6 +15,8 @@
  */
 package com.android.quickstep.fallback;
 
+import static com.android.launcher3.anim.Interpolators.FINAL_FRAME;
+import static com.android.launcher3.anim.Interpolators.INSTANT;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_MODAL;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_SCALE;
@@ -77,9 +79,7 @@
         float clearAllButtonAlpha = state.hasClearAllButton() ? 1 : 0;
         setter.setFloat(mRecentsView.getClearAllButton(), ClearAllButton.VISIBILITY_ALPHA,
                 clearAllButtonAlpha, LINEAR);
-        float overviewButtonAlpha =
-                state.hasOverviewActions() && mRecentsView.shouldShowOverviewActionsForState(state)
-                        ? 1 : 0;
+        float overviewButtonAlpha = state.hasOverviewActions() ? 1 : 0;
         setter.setFloat(mActivity.getActionsView().getVisibilityAlpha(),
                 MultiValueAlpha.VALUE, overviewButtonAlpha, LINEAR);
 
@@ -94,8 +94,9 @@
         setter.setFloat(mRecentsView, TASK_MODALNESS, state.getOverviewModalness(),
                 config.getInterpolator(ANIM_OVERVIEW_MODAL, LINEAR));
         setter.setFloat(mRecentsView, FULLSCREEN_PROGRESS, state.isFullScreen() ? 1 : 0, LINEAR);
-        setter.setFloat(mRecentsView, RECENTS_GRID_PROGRESS,
-                state.displayOverviewTasksAsGrid(mActivity.getDeviceProfile()) ? 1f : 0f, LINEAR);
+        boolean showAsGrid = state.displayOverviewTasksAsGrid(mActivity.getDeviceProfile());
+        setter.setFloat(mRecentsView, RECENTS_GRID_PROGRESS, showAsGrid ? 1f : 0f,
+                showAsGrid ? INSTANT : FINAL_FRAME);
 
         setter.setViewBackgroundColor(mActivity.getScrimView(), state.getScrimColor(mActivity),
                 config.getInterpolator(ANIM_SCRIM_FADE, LINEAR));
diff --git a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java
index ac3fb27..765480c 100644
--- a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java
+++ b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java
@@ -24,22 +24,23 @@
 import android.annotation.TargetApi;
 import android.app.ActivityManager.RunningTaskInfo;
 import android.content.Context;
+import android.content.res.Configuration;
 import android.os.Build;
 import android.util.AttributeSet;
-import android.util.Log;
+import android.view.MotionEvent;
 
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.statemanager.StateManager.StateListener;
-import com.android.launcher3.testing.TestProtocol;
 import com.android.quickstep.FallbackActivityInterface;
 import com.android.quickstep.GestureState;
 import com.android.quickstep.RecentsActivity;
+import com.android.quickstep.util.SplitSelectStateController;
+import com.android.quickstep.util.TaskViewSimulator;
 import com.android.quickstep.views.OverviewActionsView;
 import com.android.quickstep.views.RecentsView;
-import com.android.quickstep.views.SplitPlaceholderView;
 import com.android.quickstep.views.TaskView;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.Task.TaskKey;
@@ -62,8 +63,8 @@
     }
 
     @Override
-    public void init(OverviewActionsView actionsView, SplitPlaceholderView splitPlaceholderView) {
-        super.init(actionsView, splitPlaceholderView);
+    public void init(OverviewActionsView actionsView, SplitSelectStateController splitController) {
+        super.init(actionsView, splitController);
         setOverviewStateEnabled(true);
         setOverlayEnabled(true);
     }
@@ -78,8 +79,10 @@
      * to the home task. This allows us to handle quick-switch similarly to a quick-switching
      * from a foreground task.
      */
-    public void onGestureAnimationStartOnHome(RunningTaskInfo homeTaskInfo) {
-        mHomeTaskInfo = homeTaskInfo;
+    public void onGestureAnimationStartOnHome(RunningTaskInfo[] homeTaskInfo) {
+        // TODO(b/195607777) General fallback love, but this might be correct
+        //  Home task should be defined as the front-most task info I think?
+        mHomeTaskInfo = homeTaskInfo[0];
         onGestureAnimationStart(homeTaskInfo);
     }
 
@@ -90,12 +93,14 @@
      */
     @Override
     public void onPrepareGestureEndAnimation(
-            @Nullable AnimatorSet animatorSet, GestureState.GestureEndTarget endTarget) {
-        super.onPrepareGestureEndAnimation(animatorSet, endTarget);
+            @Nullable AnimatorSet animatorSet, GestureState.GestureEndTarget endTarget,
+            TaskViewSimulator[] taskViewSimulators) {
+        super.onPrepareGestureEndAnimation(animatorSet, endTarget, taskViewSimulators);
         if (mHomeTaskInfo != null && endTarget == RECENTS && animatorSet != null) {
-            TaskView tv = getTaskView(mHomeTaskInfo.taskId);
+            TaskView tv = getTaskViewByTaskId(mHomeTaskInfo.taskId);
             if (tv != null) {
-                PendingAnimation pa = createTaskDismissAnimation(tv, true, false, 150);
+                PendingAnimation pa = createTaskDismissAnimation(tv, true, false, 150,
+                        false /* dismissingForSplitSelection*/);
                 pa.addEndListener(e -> setCurrentTask(-1));
                 AnimatorPlaybackController controller = pa.createPlaybackController();
                 controller.dispatchOnStart();
@@ -114,16 +119,29 @@
     }
 
     @Override
-    public void setCurrentTask(int runningTaskId) {
-        super.setCurrentTask(runningTaskId);
+    public void setCurrentTask(int runningTaskViewId) {
+        super.setCurrentTask(runningTaskViewId);
+        int runningTaskId = getTaskIdsForRunningTaskView()[0];
         if (mHomeTaskInfo != null && mHomeTaskInfo.taskId != runningTaskId) {
             mHomeTaskInfo = null;
             setRunningTaskHidden(false);
         }
     }
 
+    @Nullable
     @Override
-    protected boolean shouldAddStubTaskView(RunningTaskInfo runningTaskInfo) {
+    protected TaskView getHomeTaskView() {
+        return mHomeTaskInfo != null ? getTaskViewByTaskId(mHomeTaskInfo.taskId) : null;
+    }
+
+    @Override
+    protected boolean shouldAddStubTaskView(RunningTaskInfo[] runningTaskInfos) {
+        if (runningTaskInfos.length > 1) {
+            // can't be in split screen w/ home task
+            return super.shouldAddStubTaskView(runningTaskInfos);
+        }
+
+        RunningTaskInfo runningTaskInfo = runningTaskInfos[0];
         if (mHomeTaskInfo != null && runningTaskInfo != null &&
                 mHomeTaskInfo.taskId == runningTaskInfo.taskId
                 && getTaskViewCount() == 0) {
@@ -131,7 +149,7 @@
             // show the empty recents message instead of showing a stub task and later removing it.
             return false;
         }
-        return super.shouldAddStubTaskView(runningTaskInfo);
+        return super.shouldAddStubTaskView(runningTaskInfos);
     }
 
     @Override
@@ -139,11 +157,13 @@
         // When quick-switching on 3p-launcher, we add a "stub" tile corresponding to Launcher
         // as well. This tile is never shown as we have setCurrentTaskHidden, but allows use to
         // track the index of the next task appropriately, as if we are switching on any other app.
-        if (mHomeTaskInfo != null && mHomeTaskInfo.taskId == mRunningTaskId && !tasks.isEmpty()) {
+        // TODO(b/195607777) Confirm home task info is front-most task and not mixed in with others
+        int runningTaskId = getTaskIdsForRunningTaskView()[0];
+        if (mHomeTaskInfo != null && mHomeTaskInfo.taskId == runningTaskId && !tasks.isEmpty()) {
             // Check if the task list has running task
             boolean found = false;
             for (Task t : tasks) {
-                if (t.key.id == mRunningTaskId) {
+                if (t.key.id == runningTaskId) {
                     found = true;
                     break;
                 }
@@ -175,6 +195,7 @@
         } else {
             if (mActivity.isInState(RecentsState.MODAL_TASK)) {
                 mActivity.getStateManager().goToState(DEFAULT);
+                resetModalVisuals();
             }
         }
     }
@@ -205,4 +226,19 @@
             setDisallowScrollToClearAll(!state.hasClearAllButton());
         }
     }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        boolean result = super.onTouchEvent(ev);
+        // Do not let touch escape to siblings below this view.
+        return result || mActivity.getStateManager().getState().overviewUi();
+    }
+
+    @Override
+    protected void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+
+        // Reset modal state if full configuration changes
+        setModalStateEnabled(false);
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/fallback/RecentsState.java b/quickstep/src/com/android/quickstep/fallback/RecentsState.java
index b6cfdce..917b58a 100644
--- a/quickstep/src/com/android/quickstep/fallback/RecentsState.java
+++ b/quickstep/src/com/android/quickstep/fallback/RecentsState.java
@@ -23,7 +23,6 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.statemanager.BaseState;
 import com.android.launcher3.util.Themes;
 import com.android.quickstep.RecentsActivity;
@@ -40,15 +39,16 @@
     private static final int FLAG_SHOW_AS_GRID = BaseState.getFlag(4);
     private static final int FLAG_SCRIM = BaseState.getFlag(5);
     private static final int FLAG_LIVE_TILE = BaseState.getFlag(6);
+    private static final int FLAG_OVERVIEW_UI = BaseState.getFlag(7);
 
     public static final RecentsState DEFAULT = new RecentsState(0,
-            FLAG_CLEAR_ALL_BUTTON | FLAG_OVERVIEW_ACTIONS | FLAG_SHOW_AS_GRID | FLAG_SCRIM
-                    | FLAG_LIVE_TILE);
+            FLAG_DISABLE_RESTORE | FLAG_CLEAR_ALL_BUTTON | FLAG_OVERVIEW_ACTIONS | FLAG_SHOW_AS_GRID
+                    | FLAG_SCRIM | FLAG_LIVE_TILE | FLAG_OVERVIEW_UI);
     public static final RecentsState MODAL_TASK = new ModalState(1,
             FLAG_DISABLE_RESTORE | FLAG_CLEAR_ALL_BUTTON | FLAG_OVERVIEW_ACTIONS | FLAG_MODAL
-                    | FLAG_SHOW_AS_GRID | FLAG_SCRIM | FLAG_LIVE_TILE);
+                    | FLAG_SHOW_AS_GRID | FLAG_SCRIM | FLAG_LIVE_TILE | FLAG_OVERVIEW_UI);
     public static final RecentsState BACKGROUND_APP = new BackgroundAppState(2,
-            FLAG_DISABLE_RESTORE | FLAG_NON_INTERACTIVE | FLAG_FULL_SCREEN);
+            FLAG_DISABLE_RESTORE | FLAG_NON_INTERACTIVE | FLAG_FULL_SCREEN | FLAG_OVERVIEW_UI);
     public static final RecentsState HOME = new RecentsState(3, 0);
     public static final RecentsState BG_LAUNCHER = new LauncherState(4, 0);
 
@@ -133,11 +133,14 @@
      * For this state, whether tasks should layout as a grid rather than a list.
      */
     public boolean displayOverviewTasksAsGrid(DeviceProfile deviceProfile) {
-        return hasFlag(FLAG_SHOW_AS_GRID) && showAsGrid(deviceProfile);
+        return hasFlag(FLAG_SHOW_AS_GRID) && deviceProfile.overviewShowAsGrid;
     }
 
-    private boolean showAsGrid(DeviceProfile deviceProfile) {
-        return deviceProfile.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get();
+    /**
+     * True if the state has overview panel visible.
+     */
+    public boolean overviewUi() {
+        return hasFlag(FLAG_OVERVIEW_UI);
     }
 
     private static class ModalState extends RecentsState {
diff --git a/quickstep/src/com/android/quickstep/inputconsumers/TaskbarStashInputConsumer.java b/quickstep/src/com/android/quickstep/inputconsumers/TaskbarStashInputConsumer.java
new file mode 100644
index 0000000..dbe260a
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/inputconsumers/TaskbarStashInputConsumer.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.inputconsumers;
+
+import static com.android.launcher3.Utilities.squaredHypot;
+
+import android.content.Context;
+import android.view.GestureDetector;
+import android.view.GestureDetector.SimpleOnGestureListener;
+import android.view.MotionEvent;
+
+import com.android.launcher3.Utilities;
+import com.android.launcher3.taskbar.TaskbarActivityContext;
+import com.android.quickstep.InputConsumer;
+import com.android.systemui.shared.system.InputMonitorCompat;
+
+/**
+ * Listens for a long press, and cancels the current gesture if that causes Taskbar to be unstashed.
+ */
+public class TaskbarStashInputConsumer extends DelegateInputConsumer {
+
+    private final TaskbarActivityContext mTaskbarActivityContext;
+    private final GestureDetector mLongPressDetector;
+    private final float mSquaredTouchSlop;
+
+    private float mDownX, mDownY;
+    private boolean mCanceledUnstashHint;
+
+    public TaskbarStashInputConsumer(Context context, InputConsumer delegate,
+            InputMonitorCompat inputMonitor, TaskbarActivityContext taskbarActivityContext) {
+        super(delegate, inputMonitor);
+        mTaskbarActivityContext = taskbarActivityContext;
+        mSquaredTouchSlop = Utilities.squaredTouchSlop(context);
+
+        mLongPressDetector = new GestureDetector(context, new SimpleOnGestureListener() {
+            @Override
+            public void onLongPress(MotionEvent motionEvent) {
+                onLongPressDetected(motionEvent);
+            }
+        });
+    }
+
+    @Override
+    public int getType() {
+        return TYPE_TASKBAR_STASH | mDelegate.getType();
+    }
+
+    @Override
+    public void onMotionEvent(MotionEvent ev) {
+        mLongPressDetector.onTouchEvent(ev);
+        if (mState != STATE_ACTIVE) {
+            mDelegate.onMotionEvent(ev);
+
+            if (mTaskbarActivityContext != null) {
+                final float x = ev.getRawX();
+                final float y = ev.getRawY();
+                switch (ev.getAction()) {
+                    case MotionEvent.ACTION_DOWN:
+                        mDownX = x;
+                        mDownY = y;
+                        mTaskbarActivityContext.startTaskbarUnstashHint(
+                                /* animateForward = */ true);
+                        mCanceledUnstashHint = false;
+                        break;
+                    case MotionEvent.ACTION_MOVE:
+                        if (!mCanceledUnstashHint
+                                && squaredHypot(mDownX - x, mDownY - y) > mSquaredTouchSlop) {
+                            mTaskbarActivityContext.startTaskbarUnstashHint(
+                                    /* animateForward = */ false);
+                            mCanceledUnstashHint = true;
+                        }
+                        break;
+                    case MotionEvent.ACTION_UP:
+                    case MotionEvent.ACTION_CANCEL:
+                        if (!mCanceledUnstashHint) {
+                            mTaskbarActivityContext.startTaskbarUnstashHint(
+                                    /* animateForward = */ false);
+                        }
+                        break;
+                }
+            }
+        }
+    }
+
+    private void onLongPressDetected(MotionEvent motionEvent) {
+        if (mTaskbarActivityContext != null
+                && mTaskbarActivityContext.onLongPressToUnstashTaskbar()) {
+            setActive(motionEvent);
+        }
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java b/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java
index b2183d6..04b147c 100644
--- a/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java
+++ b/quickstep/src/com/android/quickstep/interaction/SwipeUpGestureTutorialController.java
@@ -46,6 +46,7 @@
 import com.android.launcher3.anim.AnimatorListeners;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.quickstep.AnimatedFloat;
 import com.android.quickstep.GestureState;
 import com.android.quickstep.OverviewComponentObserver;
@@ -263,14 +264,16 @@
 
         void initDp(DeviceProfile dp) {
             initTransitionEndpoints(dp);
-            mTaskViewSimulator.setPreviewBounds(
+            mRemoteTargetHandles[0].mTaskViewSimulator.setPreviewBounds(
                     new Rect(0, 0, dp.widthPx, dp.heightPx), dp.getInsets());
         }
 
         @Override
         public void updateFinalShift() {
-            mWindowTransitionController.setProgress(mCurrentShift.value, mDragLengthFactor);
-            mTaskViewSimulator.apply(mTransformParams);
+            mRemoteTargetHandles[0].mPlaybackController
+                    .setProgress(mCurrentShift.value, mDragLengthFactor);
+            mRemoteTargetHandles[0].mTaskViewSimulator.apply(
+                    mRemoteTargetHandles[0].mTransformParams);
         }
 
         AnimatedFloat getCurrentShift() {
@@ -326,7 +329,8 @@
                     mFakeIconView.setVisibility(View.INVISIBLE);
                 }
             };
-            RectFSpringAnim windowAnim = createWindowAnimationToHome(startShift, homeAnimFactory);
+            RectFSpringAnim windowAnim = createWindowAnimationToHome(startShift,
+                    homeAnimFactory)[0];
             windowAnim.start(mContext, velocityPxPerMs);
             return windowAnim;
         }
diff --git a/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java b/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
index 7eca360..7ae0fc8 100644
--- a/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
+++ b/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
@@ -16,19 +16,15 @@
 
 package com.android.quickstep.logging;
 
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_HOTSEAT_COUNT;
 import static com.android.launcher3.Utilities.getDevicePrefs;
 import static com.android.launcher3.Utilities.getPrefs;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_2;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_3;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_4;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_5;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_HOME_SCREEN_SUGGESTIONS_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_HOME_SCREEN_SUGGESTIONS_ENABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_NOTIFICATION_DOT_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_NOTIFICATION_DOT_ENABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_THEMED_ICON_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_THEMED_ICON_ENABLED;
+import static com.android.launcher3.model.DeviceGridState.KEY_WORKSPACE_SIZE;
 import static com.android.launcher3.model.QuickstepModelDelegate.LAST_PREDICTION_ENABLED_STATE;
 import static com.android.launcher3.util.SettingsCache.NOTIFICATION_BADGING_URI;
 import static com.android.launcher3.util.Themes.KEY_THEMED_ICONS;
@@ -47,6 +43,7 @@
 import com.android.launcher3.logging.InstanceIdSequence;
 import com.android.launcher3.logging.StatsLogManager;
 import com.android.launcher3.logging.StatsLogManager.StatsLogger;
+import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.util.SettingsCache;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SysUINavigationMode.Mode;
@@ -133,7 +130,9 @@
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
-        if (LAST_PREDICTION_ENABLED_STATE.equals(key) || KEY_MIGRATION_SRC_HOTSEAT_COUNT.equals(key)
+        if (LAST_PREDICTION_ENABLED_STATE.equals(key)
+                || KEY_WORKSPACE_SIZE.equals(key)
+                || KEY_THEMED_ICONS.equals(key)
                 || mLoggablePrefs.containsKey(key)) {
             dispatchUserEvent();
         }
@@ -151,30 +150,13 @@
                 ? LAUNCHER_HOME_SCREEN_SUGGESTIONS_ENABLED
                 : LAUNCHER_HOME_SCREEN_SUGGESTIONS_DISABLED);
 
-        SharedPreferences prefs = getPrefs(mContext);
-        StatsLogManager.LauncherEvent gridSizeChangedEvent = null;
-        // TODO(b/184981523): This doesn't work for 2-panel grid, which has 6 hotseat icons
-        switch (prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, -1)) {
-            case 5:
-                gridSizeChangedEvent = LAUNCHER_GRID_SIZE_5;
-                break;
-            case 4:
-                gridSizeChangedEvent = LAUNCHER_GRID_SIZE_4;
-                break;
-            case 3:
-                gridSizeChangedEvent = LAUNCHER_GRID_SIZE_3;
-                break;
-            case 2:
-                gridSizeChangedEvent = LAUNCHER_GRID_SIZE_2;
-                break;
-            default:
-                // Ignore illegal input.
-                break;
-        }
+        StatsLogManager.LauncherEvent gridSizeChangedEvent =
+                new DeviceGridState(mContext).getWorkspaceSizeEvent();
         if (gridSizeChangedEvent != null) {
             logger.log(gridSizeChangedEvent);
         }
 
+        SharedPreferences prefs = getPrefs(mContext);
         if (FeatureFlags.ENABLE_THEMED_ICONS.get()) {
             logger.log(prefs.getBoolean(KEY_THEMED_ICONS, false)
                     ? LAUNCHER_THEMED_ICON_ENABLED
diff --git a/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java b/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java
index 7f94839..7c83833 100644
--- a/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java
+++ b/quickstep/src/com/android/quickstep/util/AnimatorControllerWithResistance.java
@@ -48,14 +48,16 @@
 public class AnimatorControllerWithResistance {
 
     private enum RecentsResistanceParams {
-        FROM_APP(0.75f, 0.5f, 1f),
-        FROM_OVERVIEW(1f, 0.75f, 0.5f);
+        FROM_APP(0.75f, 0.5f, 1f, false),
+        FROM_APP_TABLET(1f, 0.7f, 1f, true),
+        FROM_OVERVIEW(1f, 0.75f, 0.5f, false);
 
         RecentsResistanceParams(float scaleStartResist, float scaleMaxResist,
-                float translationFactor) {
+                float translationFactor, boolean stopScalingAtTop) {
             this.scaleStartResist = scaleStartResist;
             this.scaleMaxResist = scaleMaxResist;
             this.translationFactor = translationFactor;
+            this.stopScalingAtTop = stopScalingAtTop;
         }
 
         /**
@@ -73,6 +75,12 @@
          * where 0 will keep it centered and 1 will have it barely touch the top of the screen.
          */
         public final float translationFactor;
+
+        /**
+         * Whether to end scaling effect when the scaled down version of TaskView's top reaches the
+         * non-scaled version of TaskView's top.
+         */
+        public final boolean stopScalingAtTop;
     }
 
     private static final TimeInterpolator RECENTS_SCALE_RESIST_INTERPOLATOR = DEACCEL;
@@ -150,8 +158,7 @@
         Rect startRect = new Rect();
         PagedOrientationHandler orientationHandler = params.recentsOrientedState
                 .getOrientationHandler();
-        LauncherActivityInterface.INSTANCE.calculateTaskSize(params.context, params.dp, startRect,
-                orientationHandler);
+        LauncherActivityInterface.INSTANCE.calculateTaskSize(params.context, params.dp, startRect);
         long distanceToCover = startRect.bottom;
         PendingAnimation resistAnim = params.resistAnim != null
                 ? params.resistAnim
@@ -160,26 +167,6 @@
         PointF pivot = new PointF();
         float fullscreenScale = params.recentsOrientedState.getFullScreenScaleAndPivot(
                 startRect, params.dp, pivot);
-        float prevScaleRate = (fullscreenScale - params.startScale)
-                / (params.dp.heightPx - startRect.bottom);
-        // This is what the scale would be at the end of the drag if we didn't apply resistance.
-        float endScale = params.startScale - prevScaleRate * distanceToCover;
-        // Create an interpolator that resists the scale so the scale doesn't get smaller than
-        // RECENTS_SCALE_MAX_RESIST.
-        float startResist = Utilities.getProgress(params.resistanceParams.scaleStartResist,
-                params.startScale, endScale);
-        float maxResist = Utilities.getProgress(params.resistanceParams.scaleMaxResist,
-                params.startScale, endScale);
-        final TimeInterpolator scaleInterpolator = t -> {
-            if (t < startResist) {
-                return t;
-            }
-            float resistProgress = Utilities.getProgress(t, startResist, 1);
-            resistProgress = RECENTS_SCALE_RESIST_INTERPOLATOR.getInterpolation(resistProgress);
-            return startResist + resistProgress * (maxResist - startResist);
-        };
-        resistAnim.addFloat(params.scaleTarget, params.scaleProperty, params.startScale, endScale,
-                scaleInterpolator);
 
         // Compute where the task view would be based on the end scale.
         RectF endRectF = new RectF(startRect);
@@ -194,6 +181,32 @@
         resistAnim.addFloat(params.translationTarget, params.translationProperty,
                 params.startTranslation, endTranslation, RECENTS_TRANSLATE_RESIST_INTERPOLATOR);
 
+        float prevScaleRate = (fullscreenScale - params.startScale)
+                / (params.dp.heightPx - startRect.bottom);
+        // This is what the scale would be at the end of the drag if we didn't apply resistance.
+        float endScale = params.startScale - prevScaleRate * distanceToCover;
+        // Create an interpolator that resists the scale so the scale doesn't get smaller than
+        // RECENTS_SCALE_MAX_RESIST.
+        float startResist = Utilities.getProgress(params.resistanceParams.scaleStartResist,
+                params.startScale, endScale);
+        float maxResist = Utilities.getProgress(params.resistanceParams.scaleMaxResist,
+                params.startScale, endScale);
+        float stopResist =
+                params.resistanceParams.stopScalingAtTop ? 1f - startRect.top / endRectF.top : 1f;
+        final TimeInterpolator scaleInterpolator = t -> {
+            if (t < startResist) {
+                return t;
+            }
+            if (t > stopResist) {
+                return maxResist;
+            }
+            float resistProgress = Utilities.getProgress(t, startResist, stopResist);
+            resistProgress = RECENTS_SCALE_RESIST_INTERPOLATOR.getInterpolation(resistProgress);
+            return startResist + resistProgress * (maxResist - startResist);
+        };
+        resistAnim.addFloat(params.scaleTarget, params.scaleProperty, params.startScale, endScale,
+                scaleInterpolator);
+
         return resistAnim;
     }
 
@@ -228,7 +241,7 @@
 
         // These are not required, or can have a default value that is generally correct.
         @Nullable public PendingAnimation resistAnim = null;
-        public RecentsResistanceParams resistanceParams = RecentsResistanceParams.FROM_APP;
+        public RecentsResistanceParams resistanceParams;
         public float startScale = 1f;
         public float startTranslation = 0f;
 
@@ -242,6 +255,11 @@
             this.scaleProperty = scaleProperty;
             this.translationTarget = translationTarget;
             this.translationProperty = translationProperty;
+            if (dp.isTablet) {
+                resistanceParams = RecentsResistanceParams.FROM_APP_TABLET;
+            } else {
+                resistanceParams = RecentsResistanceParams.FROM_APP;
+            }
         }
 
         private RecentsParams setResistAnim(PendingAnimation resistAnim) {
diff --git a/quickstep/src/com/android/quickstep/util/LauncherSplitScreenListener.java b/quickstep/src/com/android/quickstep/util/LauncherSplitScreenListener.java
new file mode 100644
index 0000000..da665d4
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/util/LauncherSplitScreenListener.java
@@ -0,0 +1,104 @@
+package com.android.quickstep.util;
+
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT;
+
+import android.content.Context;
+import android.os.IBinder;
+
+import com.android.launcher3.util.MainThreadInitializedObject;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
+import com.android.launcher3.util.SplitConfigurationOptions.StageType;
+import com.android.launcher3.util.SplitConfigurationOptions.StagedSplitTaskPosition;
+import com.android.quickstep.SystemUiProxy;
+import com.android.wm.shell.splitscreen.ISplitScreenListener;
+
+/**
+ * Listeners for system wide split screen position and stage changes.
+ * Use {@link #getSplitTaskIds()} to determine which tasks, if any, are in staged split.
+ */
+public class LauncherSplitScreenListener extends ISplitScreenListener.Stub {
+
+    public static final MainThreadInitializedObject<LauncherSplitScreenListener> INSTANCE =
+            new MainThreadInitializedObject<>(LauncherSplitScreenListener::new);
+
+    private final StagedSplitTaskPosition mMainStagePosition = new StagedSplitTaskPosition();
+    private final StagedSplitTaskPosition mSideStagePosition = new StagedSplitTaskPosition();
+
+    public LauncherSplitScreenListener(Context context) {
+        mMainStagePosition.stageType = SplitConfigurationOptions.STAGE_TYPE_MAIN;
+        mSideStagePosition.stageType = SplitConfigurationOptions.STAGE_TYPE_SIDE;
+    }
+
+    /** Also call {@link #destroy()} when done. */
+    public void init() {
+        SystemUiProxy.INSTANCE.getNoCreate().registerSplitScreenListener(this);
+    }
+
+    public void destroy() {
+        SystemUiProxy.INSTANCE.getNoCreate().unregisterSplitScreenListener(this);
+    }
+
+    /**
+     * @return index 0 will be task in left/top position, index 1 in right/bottom position.
+     *         Will return empty array if device is not in staged split
+     */
+    public int[] getSplitTaskIds() {
+        if (mMainStagePosition.taskId == -1 || mSideStagePosition.taskId == -1) {
+            return new int[]{};
+        }
+        int[] out = new int[2];
+        if (mMainStagePosition.stagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+            out[0] = mMainStagePosition.taskId;
+            out[1] = mSideStagePosition.taskId;
+        } else {
+            out[1] = mMainStagePosition.taskId;
+            out[0] = mSideStagePosition.taskId;
+        }
+        return out;
+    }
+
+    @Override
+    public void onStagePositionChanged(@StageType int stage, @StagePosition int position) {
+        if (stage == SplitConfigurationOptions.STAGE_TYPE_MAIN) {
+            mMainStagePosition.stagePosition = position;
+        } else {
+            mSideStagePosition.stagePosition = position;
+        }
+    }
+
+    @Override
+    public void onTaskStageChanged(int taskId, @StageType int stage, boolean visible) {
+        // If task is not visible but we are tracking it, stop tracking it
+        if (!visible) {
+            if (mMainStagePosition.taskId == taskId) {
+                resetTaskId(mMainStagePosition);
+            } else if (mSideStagePosition.taskId == taskId) {
+                resetTaskId(mSideStagePosition);
+            } // else it's an un-tracked child
+            return;
+        }
+
+        // If stage has moved to undefined, stop tracking the task
+        if (stage == SplitConfigurationOptions.STAGE_TYPE_UNDEFINED) {
+            resetTaskId(taskId == mMainStagePosition.taskId ?
+                    mMainStagePosition : mSideStagePosition);
+            return;
+        }
+
+        if (stage == SplitConfigurationOptions.STAGE_TYPE_MAIN) {
+            mMainStagePosition.taskId = taskId;
+        } else {
+            mSideStagePosition.taskId = taskId;
+        }
+    }
+
+    private void resetTaskId(StagedSplitTaskPosition taskPosition) {
+        taskPosition.taskId = -1;
+    }
+
+    @Override
+    public IBinder asBinder() {
+        return this;
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java b/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
new file mode 100644
index 0000000..d0fb9e5
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.util;
+
+import static com.android.launcher3.Utilities.comp;
+
+import android.annotation.Nullable;
+import android.view.ViewTreeObserver;
+import android.view.WindowManager;
+
+import com.android.launcher3.Hotseat;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.util.HorizontalInsettableView;
+import com.android.unfold.UnfoldTransitionProgressProvider;
+import com.android.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener;
+
+/**
+ * Controls animations that are happening during unfolding foldable devices
+ */
+public class LauncherUnfoldAnimationController {
+
+    // Percentage of the width of the quick search bar that will be reduced
+    // from the both sides of the bar when progress is 0
+    private static final float MAX_WIDTH_INSET_FRACTION = 0.15f;
+
+    private final Launcher mLauncher;
+    private final UnfoldTransitionProgressProvider mUnfoldTransitionProgressProvider;
+    private final UnfoldMoveFromCenterWorkspaceAnimator mMoveFromCenterWorkspaceAnimation;
+
+    @Nullable
+    private HorizontalInsettableView mQsbInsettable;
+
+    private final AnimationListener mAnimationListener = new AnimationListener();
+
+    private boolean mIsTransitionRunning = false;
+    private boolean mIsReadyToPlayAnimation = false;
+
+    public LauncherUnfoldAnimationController(
+            Launcher launcher,
+            WindowManager windowManager,
+            UnfoldTransitionProgressProvider unfoldTransitionProgressProvider) {
+        mLauncher = launcher;
+        mUnfoldTransitionProgressProvider = unfoldTransitionProgressProvider;
+        mMoveFromCenterWorkspaceAnimation = new UnfoldMoveFromCenterWorkspaceAnimator(launcher,
+                windowManager);
+        mUnfoldTransitionProgressProvider.addCallback(mAnimationListener);
+    }
+
+    /**
+     * Called when launcher is resumed
+     */
+    public void onResume() {
+        Hotseat hotseat = mLauncher.getHotseat();
+        if (hotseat != null && hotseat.getQsb() instanceof HorizontalInsettableView) {
+            mQsbInsettable = (HorizontalInsettableView) hotseat.getQsb();
+        }
+
+        final ViewTreeObserver obs = mLauncher.getWorkspace().getViewTreeObserver();
+        obs.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
+            @Override
+            public boolean onPreDraw() {
+                if (obs.isAlive()) {
+                    onPreDrawAfterResume();
+                    obs.removeOnPreDrawListener(this);
+                }
+                return true;
+            }
+        });
+    }
+
+    /**
+     * Called when launcher activity is paused
+     */
+    public void onPause() {
+        if (mIsTransitionRunning) {
+            mIsTransitionRunning = false;
+            mAnimationListener.onTransitionFinished();
+        }
+
+        mIsReadyToPlayAnimation = false;
+        mQsbInsettable = null;
+    }
+
+    /**
+     * Called when launcher activity is destroyed
+     */
+    public void onDestroy() {
+        mUnfoldTransitionProgressProvider.removeCallback(mAnimationListener);
+    }
+
+    /**
+     * Called after performing layouting of the views after configuration change
+     */
+    private void onPreDrawAfterResume() {
+        mIsReadyToPlayAnimation = true;
+
+        if (mIsTransitionRunning) {
+            mMoveFromCenterWorkspaceAnimation.onTransitionStarted();
+        }
+    }
+
+    private class AnimationListener implements TransitionProgressListener {
+
+        @Override
+        public void onTransitionStarted() {
+            mIsTransitionRunning = true;
+
+            if (mIsReadyToPlayAnimation) {
+                mMoveFromCenterWorkspaceAnimation.onTransitionStarted();
+            }
+        }
+
+        @Override
+        public void onTransitionFinished() {
+            if (mIsReadyToPlayAnimation) {
+                mMoveFromCenterWorkspaceAnimation.onTransitionFinished();
+
+                if (mQsbInsettable != null) {
+                    mQsbInsettable.setHorizontalInsets(0);
+                }
+            }
+
+            mIsTransitionRunning = false;
+        }
+
+        @Override
+        public void onTransitionProgress(float progress) {
+            mMoveFromCenterWorkspaceAnimation.onTransitionProgress(progress);
+
+            if (mQsbInsettable != null) {
+                float insetPercentage = comp(progress) * MAX_WIDTH_INSET_FRACTION;
+                mQsbInsettable.setHorizontalInsets(insetPercentage);
+            }
+        }
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/util/LayoutUtils.java b/quickstep/src/com/android/quickstep/util/LayoutUtils.java
index 8834dc2..302526d 100644
--- a/quickstep/src/com/android/quickstep/util/LayoutUtils.java
+++ b/quickstep/src/com/android/quickstep/util/LayoutUtils.java
@@ -42,8 +42,7 @@
             PagedOrientationHandler orientationHandler) {
         // Track the bottom of the window.
         Rect taskSize = new Rect();
-        LauncherActivityInterface.INSTANCE.calculateTaskSize(
-                context, dp, taskSize, orientationHandler);
+        LauncherActivityInterface.INSTANCE.calculateTaskSize(context, dp, taskSize);
         return orientationHandler.getDistanceToBottomOfRect(dp, taskSize);
     }
 
diff --git a/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java b/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
index 1ed2da3..b83e26e 100644
--- a/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
+++ b/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
@@ -23,6 +23,7 @@
 import com.android.launcher3.Alarm;
 import com.android.launcher3.R;
 import com.android.launcher3.compat.AccessibilityManagerCompat;
+import com.android.launcher3.testing.TestProtocol;
 
 /**
  * Given positions along x- or y-axis, tracks velocity and acceleration and determines when there is
@@ -118,9 +119,10 @@
      * @param pointerIndex Index for the pointer being tracked in the motion event
      */
     public void addPosition(MotionEvent ev, int pointerIndex) {
-        mForcePauseTimeout.setAlarm(mMakePauseHarderToTrigger
-                ? HARDER_TRIGGER_TIMEOUT
-                : FORCE_PAUSE_TIMEOUT);
+        long timeoutMs = TestProtocol.sForcePauseTimeout != null
+                ? TestProtocol.sForcePauseTimeout
+                : mMakePauseHarderToTrigger ? HARDER_TRIGGER_TIMEOUT : FORCE_PAUSE_TIMEOUT;
+        mForcePauseTimeout.setAlarm(timeoutMs);
         float newVelocity = mVelocityProvider.addMotionEvent(ev, ev.getPointerId(pointerIndex));
         if (mPreviousVelocity != null) {
             checkMotionPaused(newVelocity, mPreviousVelocity, ev.getEventTime());
diff --git a/quickstep/src/com/android/quickstep/util/ProxyScreenStatusProvider.java b/quickstep/src/com/android/quickstep/util/ProxyScreenStatusProvider.java
new file mode 100644
index 0000000..9eda8f4
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/util/ProxyScreenStatusProvider.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.util;
+
+import androidx.annotation.NonNull;
+
+import com.android.unfold.updates.screen.ScreenStatusProvider;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Screen status provider implementation that exposes methods to provide screen
+ * status updates to listeners. It is used to receive screen turned on event from
+ * SystemUI to Launcher.
+ */
+public class ProxyScreenStatusProvider implements ScreenStatusProvider {
+
+    public static final ProxyScreenStatusProvider INSTANCE = new ProxyScreenStatusProvider();
+    private final List<ScreenListener> mListeners = new ArrayList<>();
+
+    /**
+     * Called when the screen is on and ready (windows are drawn and screen blocker is removed)
+     */
+    public void onScreenTurnedOn() {
+        mListeners.forEach(ScreenListener::onScreenTurnedOn);
+    }
+
+    @Override
+    public void addCallback(@NonNull ScreenListener listener) {
+        mListeners.add(listener);
+    }
+
+    @Override
+    public void removeCallback(@NonNull ScreenListener listener) {
+        mListeners.remove(listener);
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java b/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java
index 7cfd151..21e0ae8 100644
--- a/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java
+++ b/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java
@@ -396,7 +396,7 @@
         Rect insets = dp.getInsets();
         float fullWidth = dp.widthPx;
         float fullHeight = dp.heightPx;
-        if (TaskView.CLIP_STATUS_AND_NAV_BARS) {
+        if (TaskView.clipStatusAndNavBars(dp)) {
             fullWidth -= insets.left + insets.right;
             fullHeight -= insets.top + insets.bottom;
         }
diff --git a/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java b/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
index a147b68..16c925a 100644
--- a/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
+++ b/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
@@ -22,33 +22,26 @@
 import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_BOTTOM_OR_RIGHT;
 import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT;
 
-import android.animation.AnimatorSet;
-import android.app.ActivityOptions;
+import android.app.ActivityThread;
 import android.content.res.Resources;
 import android.graphics.Rect;
 import android.os.Handler;
 import android.os.IBinder;
-import android.os.Looper;
-import android.util.Pair;
 import android.view.Gravity;
+import android.view.RemoteAnimationAdapter;
 import android.view.SurfaceControl;
 import android.window.TransitionInfo;
 
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.BaseActivity;
-import com.android.launcher3.BaseQuickstepLauncher;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.InsettableFrameLayout;
-import com.android.launcher3.LauncherAnimationRunner;
-import com.android.launcher3.LauncherAnimationRunner.RemoteAnimationFactory;
 import com.android.launcher3.R;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskAnimationManager;
 import com.android.quickstep.TaskViewUtils;
 import com.android.quickstep.views.TaskView;
-import com.android.systemui.shared.system.ActivityOptionsCompat;
 import com.android.systemui.shared.system.RemoteAnimationAdapterCompat;
 import com.android.systemui.shared.system.RemoteAnimationRunnerCompat;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
@@ -63,6 +56,7 @@
 
     private final SystemUiProxy mSystemUiProxy;
     private TaskView mInitialTaskView;
+    private TaskView mSecondTaskView;
     private SplitPositionOption mInitialPosition;
     private Rect mInitialBounds;
     private final Handler mHandler;
@@ -86,43 +80,29 @@
      * To be called after second task selected
      */
     public void setSecondTaskId(TaskView taskView) {
-        if (TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
-            // Assume initial task is for top/left part of screen
-            final int[] taskIds = mInitialPosition.mStagePosition == STAGE_POSITION_TOP_OR_LEFT
-                    ? new int[]{mInitialTaskView.getTask().key.id, taskView.getTask().key.id}
-                    : new int[]{taskView.getTask().key.id, mInitialTaskView.getTask().key.id};
+        mSecondTaskView = taskView;
+        // Assume initial task is for top/left part of screen
 
-            RemoteSplitLaunchAnimationRunner animationRunner =
-                    new RemoteSplitLaunchAnimationRunner(mInitialTaskView, taskView);
+        final int[] taskIds = mInitialPosition.mStagePosition == STAGE_POSITION_TOP_OR_LEFT
+                ? new int[]{mInitialTaskView.getTask().key.id, taskView.getTask().key.id}
+                : new int[]{taskView.getTask().key.id, mInitialTaskView.getTask().key.id};
+        if (TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
+            RemoteSplitLaunchTransitionRunner animationRunner =
+                    new RemoteSplitLaunchTransitionRunner(mInitialTaskView, taskView);
             mSystemUiProxy.startTasks(taskIds[0], null /* mainOptions */, taskIds[1],
                     null /* sideOptions */, STAGE_POSITION_BOTTOM_OR_RIGHT,
                     new RemoteTransitionCompat(animationRunner, MAIN_EXECUTOR));
-            return;
+        } else {
+            RemoteSplitLaunchAnimationRunner animationRunner =
+                    new RemoteSplitLaunchAnimationRunner(mInitialTaskView, taskView);
+            final RemoteAnimationAdapter adapter = new RemoteAnimationAdapter(
+                    RemoteAnimationAdapterCompat.wrapRemoteAnimationRunner(animationRunner),
+                    300, 150,
+                    ActivityThread.currentActivityThread().getApplicationThread());
+
+            mSystemUiProxy.startTasksWithLegacyTransition(taskIds[0], null /* mainOptions */,
+                    taskIds[1], null /* sideOptions */, STAGE_POSITION_BOTTOM_OR_RIGHT, adapter);
         }
-        // Assume initial mInitialTaskId is for top/left part of screen
-        RemoteAnimationFactory initialSplitRunnerWrapped =  new SplitLaunchAnimationRunner(
-                mInitialTaskView, 0);
-        RemoteAnimationFactory secondarySplitRunnerWrapped =  new SplitLaunchAnimationRunner(
-                taskView, 1);
-        RemoteAnimationRunnerCompat initialSplitRunner = new LauncherAnimationRunner(
-                new Handler(Looper.getMainLooper()), initialSplitRunnerWrapped,
-                true /* startAtFrontOfQueue */);
-        RemoteAnimationRunnerCompat secondarySplitRunner = new LauncherAnimationRunner(
-                new Handler(Looper.getMainLooper()), secondarySplitRunnerWrapped,
-                true /* startAtFrontOfQueue */);
-        ActivityOptions initialOptions = ActivityOptionsCompat.makeRemoteAnimation(
-                new RemoteAnimationAdapterCompat(initialSplitRunner, 300, 150));
-        ActivityOptions secondaryOptions = ActivityOptionsCompat.makeRemoteAnimation(
-                new RemoteAnimationAdapterCompat(secondarySplitRunner, 300, 150));
-        mSystemUiProxy.startTask(mInitialTaskView.getTask().key.id, mInitialPosition.mStageType,
-                mInitialPosition.mStagePosition,
-                /*null*/ initialOptions.toBundle());
-        Pair<Integer, Integer> compliment = getComplimentaryStageAndPosition(mInitialPosition);
-        mSystemUiProxy.startTask(taskView.getTask().key.id, compliment.first,
-                compliment.second,
-                /*null*/ secondaryOptions.toBundle());
-        // After successful launch, call resetState
-        resetState();
     }
 
     /**
@@ -153,12 +133,12 @@
     /**
      * Requires Shell Transitions
      */
-    private class RemoteSplitLaunchAnimationRunner implements RemoteTransitionRunner {
+    private class RemoteSplitLaunchTransitionRunner implements RemoteTransitionRunner {
 
         private final TaskView mInitialTaskView;
         private final TaskView mTaskView;
 
-        RemoteSplitLaunchAnimationRunner(TaskView initialTaskView, TaskView taskView) {
+        RemoteSplitLaunchTransitionRunner(TaskView initialTaskView, TaskView taskView) {
             mInitialTaskView = initialTaskView;
             mTaskView = taskView;
         }
@@ -175,59 +155,50 @@
 
     /**
      * LEGACY
-     * @return the opposite stage and position from the {@param position} provided as first and
-     *         second object, respectively
-     * Ex. If position is has stage = Main and position = Top/Left, this will return
-     * Pair(stage=Side, position=Bottom/Left)
-     */
-    private Pair<Integer, Integer> getComplimentaryStageAndPosition(SplitPositionOption position) {
-        // Right now this is as simple as flipping between 0 and 1
-        int complimentStageType = position.mStageType ^ 1;
-        int complimentStagePosition = position.mStagePosition ^ 1;
-        return new Pair<>(complimentStageType, complimentStagePosition);
-    }
-
-    /**
-     * LEGACY
      * Remote animation runner for animation to launch an app.
      */
-    private class SplitLaunchAnimationRunner implements RemoteAnimationFactory {
+    private class RemoteSplitLaunchAnimationRunner implements RemoteAnimationRunnerCompat {
 
-        private final TaskView mV;
-        private final int mTargetState;
+        private final TaskView mInitialTaskView;
+        private final TaskView mTaskView;
 
-        SplitLaunchAnimationRunner(TaskView v, int targetState) {
-            mV = v;
-            mTargetState = targetState;
+        RemoteSplitLaunchAnimationRunner(TaskView initialTaskView, TaskView taskView) {
+            mInitialTaskView = initialTaskView;
+            mTaskView = taskView;
         }
 
         @Override
-        public void onCreateAnimation(int transit,
-                RemoteAnimationTargetCompat[] appTargets,
-                RemoteAnimationTargetCompat[] wallpaperTargets,
-                RemoteAnimationTargetCompat[] nonAppTargets,
-                LauncherAnimationRunner.AnimationResult result) {
-            AnimatorSet anim = new AnimatorSet();
-            BaseQuickstepLauncher activity = BaseActivity.fromContext(mV.getContext());
-            TaskViewUtils.composeRecentsSplitLaunchAnimatorLegacy(anim, mV,
-                    appTargets, wallpaperTargets, nonAppTargets, true, activity.getStateManager(),
-                    activity.getDepthController(), mTargetState);
-            result.setAnimation(anim, activity);
+        public void onAnimationStart(int transit, RemoteAnimationTargetCompat[] apps,
+                RemoteAnimationTargetCompat[] wallpapers, RemoteAnimationTargetCompat[] nonApps,
+                Runnable finishedCallback) {
+            TaskViewUtils.composeRecentsSplitLaunchAnimatorLegacy(mInitialTaskView, mTaskView, apps,
+                    wallpapers, nonApps, finishedCallback);
+            // After successful launch, call resetState
+            resetState();
+        }
+
+        @Override
+        public void onAnimationCancelled() {
+            resetState();
         }
     }
 
-
     /**
      * To be called if split select was cancelled
      */
     public void resetState() {
         mInitialTaskView = null;
+        mSecondTaskView = null;
         mInitialPosition = null;
         mInitialBounds = null;
     }
 
+    /**
+     * @return {@code true} if first task has been selected and waiting for the second task to be
+     *         chosen
+     */
     public boolean isSplitSelectActive() {
-        return mInitialTaskView != null;
+        return mInitialTaskView != null && mSecondTaskView == null;
     }
 
     public Rect getInitialBounds() {
diff --git a/quickstep/src/com/android/quickstep/util/SwipePipToHomeAnimator.java b/quickstep/src/com/android/quickstep/util/SwipePipToHomeAnimator.java
index c0f5c14..d4191fe 100644
--- a/quickstep/src/com/android/quickstep/util/SwipePipToHomeAnimator.java
+++ b/quickstep/src/com/android/quickstep/util/SwipePipToHomeAnimator.java
@@ -40,6 +40,7 @@
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.util.Themes;
+import com.android.quickstep.TaskAnimationManager;
 import com.android.systemui.shared.pip.PipSurfaceTransactionHelper;
 import com.android.systemui.shared.system.InteractionJankMonitorWrapper;
 
@@ -278,19 +279,36 @@
 
     private RotatedPosition getRotatedPosition(float progress) {
         final float degree, positionX, positionY;
-        if (mFromRotation == Surface.ROTATION_90) {
-            degree = -90 * progress;
-            positionX = progress * (mDestinationBoundsTransformed.left - mStartBounds.left)
-                    + mStartBounds.left;
-            positionY = progress * (mDestinationBoundsTransformed.bottom - mStartBounds.top)
-                    + mStartBounds.top;
+        if (TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
+            if (mFromRotation == Surface.ROTATION_90) {
+                degree = -90 * (1 - progress);
+                positionX = progress * (mDestinationBoundsTransformed.left - mStartBounds.left)
+                        + mStartBounds.left;
+                positionY = progress * (mDestinationBoundsTransformed.top - mStartBounds.top)
+                        + mStartBounds.top + mStartBounds.bottom * (1 - progress);
+            } else {
+                degree = 90 * (1 - progress);
+                positionX = progress * (mDestinationBoundsTransformed.left - mStartBounds.left)
+                        + mStartBounds.left + mStartBounds.right * (1 - progress);
+                positionY = progress * (mDestinationBoundsTransformed.top - mStartBounds.top)
+                        + mStartBounds.top;
+            }
         } else {
-            degree = 90 * progress;
-            positionX = progress * (mDestinationBoundsTransformed.right - mStartBounds.left)
-                    + mStartBounds.left;
-            positionY = progress * (mDestinationBoundsTransformed.top - mStartBounds.top)
-                    + mStartBounds.top;
+            if (mFromRotation == Surface.ROTATION_90) {
+                degree = -90 * progress;
+                positionX = progress * (mDestinationBoundsTransformed.left - mStartBounds.left)
+                        + mStartBounds.left;
+                positionY = progress * (mDestinationBoundsTransformed.bottom - mStartBounds.top)
+                        + mStartBounds.top;
+            } else {
+                degree = 90 * progress;
+                positionX = progress * (mDestinationBoundsTransformed.right - mStartBounds.left)
+                        + mStartBounds.left;
+                positionY = progress * (mDestinationBoundsTransformed.top - mStartBounds.top)
+                        + mStartBounds.top;
+            }
         }
+
         return new RotatedPosition(degree, positionX, positionY);
     }
 
diff --git a/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java b/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
index cceb872..7b1c62e 100644
--- a/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
+++ b/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
@@ -15,9 +15,9 @@
  */
 package com.android.quickstep.util;
 
-import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
 import static com.android.launcher3.states.RotationHelper.deltaRotation;
 import static com.android.launcher3.touch.PagedOrientationHandler.MATRIX_POST_TRANSLATE;
+import static com.android.launcher3.util.SplitConfigurationOptions.*;
 import static com.android.quickstep.util.RecentsOrientedState.postDisplayRotation;
 import static com.android.quickstep.util.RecentsOrientedState.preDisplayRotation;
 import static com.android.systemui.shared.system.WindowManagerWrapper.WINDOWING_MODE_FULLSCREEN;
@@ -30,6 +30,7 @@
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.RectF;
+import android.util.Log;
 
 import androidx.annotation.NonNull;
 
@@ -50,22 +51,27 @@
  */
 public class TaskViewSimulator implements TransformParams.BuilderProxy {
 
+    private final String TAG = "TaskViewSimulator";
+    private final boolean DEBUG = false;
+
     private final Rect mTmpCropRect = new Rect();
     private final RectF mTempRectF = new RectF();
+    // Additional offset for split tasks
+    private final Point mSplitOffset = new Point();
     private final float[] mTempPoint = new float[2];
 
     private final Context mContext;
     private final BaseActivityInterface mSizeStrategy;
-    private final boolean mIsForLiveTile;
 
     @NonNull
     private RecentsOrientedState mOrientationState;
     private final boolean mIsRecentsRtl;
 
     private final Rect mTaskRect = new Rect();
-    private boolean mDrawsBelowRecents;
     private final PointF mPivot = new PointF();
     private DeviceProfile mDp;
+    @StagePosition
+    private int mStagePosition = STAGE_POSITION_UNDEFINED;
 
     private final Matrix mMatrix = new Matrix();
     private final Matrix mMatrixTmp = new Matrix();
@@ -92,16 +98,11 @@
     // Cached calculations
     private boolean mLayoutValid = false;
     private int mOrientationStateId;
+    private StagedSplitBounds mStagedSplitBounds;
 
     public TaskViewSimulator(Context context, BaseActivityInterface sizeStrategy) {
-        this(context, sizeStrategy, false);
-    }
-
-    public TaskViewSimulator(Context context, BaseActivityInterface sizeStrategy,
-            boolean isForLiveTile) {
         mContext = context;
         mSizeStrategy = sizeStrategy;
-        mIsForLiveTile = isForLiveTile;
 
         // TODO(b/187074722): Don't create this per-TaskViewSimulator
         mOrientationState = TraceHelper.allowIpcs("",
@@ -137,9 +138,19 @@
         if (mDp == null) {
             return 1;
         }
-        mSizeStrategy.calculateTaskSize(mContext, mDp, mTaskRect,
-                mOrientationState.getOrientationHandler());
-        return mOrientationState.getFullScreenScaleAndPivot(mTaskRect, mDp, mPivot);
+        Rect fullTaskSize = new Rect();
+        mSizeStrategy.calculateTaskSize(mContext, mDp, fullTaskSize);
+
+        if (mStagedSplitBounds != null) {
+            // The task rect changes according to the staged split task sizes, but recents
+            // fullscreen scale and pivot remains the same since the task fits into the existing
+            // sized task space bounds
+            mSizeStrategy.calculateStagedSplitTaskSize(mContext, mDp, mTaskRect, mStagedSplitBounds,
+                    mStagePosition);
+        } else {
+            mTaskRect.set(fullTaskSize);
+        }
+        return mOrientationState.getFullScreenScaleAndPivot(fullTaskSize, mDp, mPivot);
     }
 
     /**
@@ -152,6 +163,24 @@
     }
 
     /**
+     * Sets the targets which the simulator will control specifically for targets to animate when
+     * in split screen
+     *
+     * @param splitInfo set to {@code null} when not in staged split mode
+     */
+    public void setPreview(RemoteAnimationTargetCompat runningTarget, StagedSplitBounds splitInfo) {
+        setPreview(runningTarget);
+        mStagedSplitBounds = splitInfo;
+        if (mStagedSplitBounds == null) {
+            mStagePosition = STAGE_POSITION_UNDEFINED;
+            return;
+        }
+        mStagePosition = mThumbnailPosition.equals(splitInfo.mLeftTopBounds) ?
+                STAGE_POSITION_TOP_OR_LEFT :
+                STAGE_POSITION_BOTTOM_OR_RIGHT;
+    }
+
+    /**
      * Sets the targets which the simulator will control
      */
     public void setPreviewBounds(Rect bounds, Rect insets) {
@@ -170,10 +199,6 @@
         recentsViewScroll.value = scroll;
     }
 
-    public void setDrawsBelowRecents(boolean drawsBelowRecents) {
-        mDrawsBelowRecents = drawsBelowRecents;
-    }
-
     /**
      * Adds animation for all the components corresponding to transition from an app to overview.
      */
@@ -252,6 +277,15 @@
             getFullScreenScale();
             mThumbnailData.rotation = mOrientationState.getDisplayRotation();
 
+            // TODO(b/195145340) handle non 50-50 split scenarios
+            if (mStagedSplitBounds != null) {
+                if (mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+                    // The preview set is for the bottom/right, inset by top/left task
+                    mSplitOffset.y = mStagedSplitBounds.mLeftTopBounds.height() +
+                        mStagedSplitBounds.mDividerBounds.height() / 2;
+                }
+            }
+
             // mIsRecentsRtl is the inverse of TaskView RTL.
             boolean isRtlEnabled = !mIsRecentsRtl;
             mPositionHelper.updateThumbnailMatrix(
@@ -259,12 +293,15 @@
                     mTaskRect.width(), mTaskRect.height(),
                     mDp, mOrientationState.getRecentsActivityRotation(), isRtlEnabled);
             mPositionHelper.getMatrix().invert(mInversePositionMatrix);
+            if (DEBUG) {
+                Log.d(TAG, " taskRect: " + mTaskRect + " splitOffset: " + mSplitOffset);
+            }
         }
 
         float fullScreenProgress = Utilities.boundToRange(this.fullScreenProgress.value, 0, 1);
         mCurrentFullscreenParams.setProgress(
-                fullScreenProgress, recentsViewScale.value, mTaskRect.width(), mDp,
-                mPositionHelper);
+                fullScreenProgress, recentsViewScale.value, /*taskViewScale=*/1f, mTaskRect.width(),
+                mDp, mPositionHelper);
 
         // Apply thumbnail matrix
         RectF insets = mCurrentFullscreenParams.mCurrentDrawnInsets;
@@ -293,6 +330,9 @@
                 recentsViewPrimaryTranslation.value);
         applyWindowToHomeRotation(mMatrix);
 
+        // Move lower/right split window into correct position
+        mMatrix.postTranslate(0, mSplitOffset.y);
+
         // Crop rect is the inverse of thumbnail matrix
         mTempRectF.set(-insets.left, -insets.top,
                 taskWidth + insets.right, taskHeight + insets.bottom);
@@ -300,6 +340,25 @@
         mTempRectF.roundOut(mTmpCropRect);
 
         params.applySurfaceParams(params.createSurfaceParams(this));
+
+        if (!DEBUG) {
+            return;
+        }
+        Log.d(TAG, "progress: " + fullScreenProgress
+                + " scale: " + scale
+                + " recentsViewScale: " + recentsViewScale.value
+                + " crop: " + mTmpCropRect
+                + " radius: " + getCurrentCornerRadius()
+                + " translate: " + mSplitOffset
+                + " taskW: " + taskWidth + " H: " + taskHeight
+                + " taskRect: " + mTaskRect
+                + " taskPrimaryT: " + taskPrimaryTranslation.value
+                + " recentsPrimaryT: " + recentsViewPrimaryTranslation.value
+                + " recentsSecondaryT: " + recentsViewSecondaryTranslation.value
+                + " taskSecondaryT: " + taskSecondaryTranslation.value
+                + " recentsScroll: " + recentsViewScroll.value
+                + " pivot: " + mPivot
+        );
     }
 
     @Override
@@ -308,13 +367,6 @@
         builder.withMatrix(mMatrix)
                 .withWindowCrop(mTmpCropRect)
                 .withCornerRadius(getCurrentCornerRadius());
-
-        if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mIsForLiveTile
-                && params.getRecentsSurface() != null) {
-            // When relativeLayer = 0, it reverts the surfaces back to the original order.
-            builder.withRelativeLayerTo(params.getRecentsSurface(),
-                    mDrawsBelowRecents ? Integer.MIN_VALUE : 0);
-        }
     }
 
     /**
diff --git a/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java b/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java
new file mode 100644
index 0000000..126e044
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.util;
+
+import android.annotation.NonNull;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.CellLayout;
+import com.android.launcher3.Hotseat;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.ShortcutAndWidgetContainer;
+import com.android.launcher3.Workspace;
+import com.android.launcher3.widget.NavigableAppWidgetHostView;
+import com.android.systemui.shared.animation.UnfoldMoveFromCenterAnimator;
+import com.android.systemui.shared.animation.UnfoldMoveFromCenterAnimator.TranslationApplier;
+import com.android.unfold.UnfoldTransitionProgressProvider;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Animation that moves launcher icons and widgets from center to the sides (final position)
+ */
+public class UnfoldMoveFromCenterWorkspaceAnimator
+        implements UnfoldTransitionProgressProvider.TransitionProgressListener {
+
+    private final Launcher mLauncher;
+    private final UnfoldMoveFromCenterAnimator mMoveFromCenterAnimation;
+
+    private final Map<ViewGroup, Boolean> mOriginalClipToPadding = new HashMap<>();
+    private final Map<ViewGroup, Boolean> mOriginalClipChildren = new HashMap<>();
+
+    public UnfoldMoveFromCenterWorkspaceAnimator(Launcher launcher, WindowManager windowManager) {
+        mLauncher = launcher;
+        mMoveFromCenterAnimation = new UnfoldMoveFromCenterAnimator(windowManager,
+                new WorkspaceViewsTranslationApplier());
+    }
+
+    @Override
+    public void onTransitionStarted() {
+        mMoveFromCenterAnimation.updateDisplayProperties();
+
+        Workspace workspace = mLauncher.getWorkspace();
+        Hotseat hotseat = mLauncher.getHotseat();
+
+        // App icons and widgets
+        workspace
+                .forEachVisiblePage(page -> {
+                    final CellLayout cellLayout = (CellLayout) page;
+                    ShortcutAndWidgetContainer itemsContainer = cellLayout
+                            .getShortcutsAndWidgets();
+                    disableClipping(cellLayout);
+
+                    for (int i = 0; i < itemsContainer.getChildCount(); i++) {
+                        View child = itemsContainer.getChildAt(i);
+                        mMoveFromCenterAnimation.registerViewForAnimation(child);
+                    }
+                });
+
+        disableClipping(workspace);
+
+        // Hotseat icons
+        ViewGroup hotseatIcons = hotseat.getShortcutsAndWidgets();
+        disableClipping(hotseat);
+
+        for (int i = 0; i < hotseatIcons.getChildCount(); i++) {
+            View child = hotseatIcons.getChildAt(i);
+            mMoveFromCenterAnimation.registerViewForAnimation(child);
+        }
+
+        onTransitionProgress(0f);
+    }
+
+    @Override
+    public void onTransitionProgress(float progress) {
+        mMoveFromCenterAnimation.onTransitionProgress(progress);
+    }
+
+    @Override
+    public void onTransitionFinished() {
+        mMoveFromCenterAnimation.onTransitionFinished();
+        mMoveFromCenterAnimation.clearRegisteredViews();
+
+        restoreClipping(mLauncher.getWorkspace());
+        mLauncher.getWorkspace().forEachVisiblePage(page -> restoreClipping((CellLayout) page));
+        restoreClipping(mLauncher.getHotseat());
+
+        mOriginalClipChildren.clear();
+        mOriginalClipToPadding.clear();
+    }
+
+    private void disableClipping(ViewGroup view) {
+        mOriginalClipToPadding.put(view, view.getClipToPadding());
+        mOriginalClipChildren.put(view, view.getClipChildren());
+        view.setClipToPadding(false);
+        view.setClipChildren(false);
+    }
+
+    private void restoreClipping(ViewGroup view) {
+        final Boolean originalClipToPadding = mOriginalClipToPadding.get(view);
+        if (originalClipToPadding != null) {
+            view.setClipToPadding(originalClipToPadding);
+        }
+        final Boolean originalClipChildren = mOriginalClipChildren.get(view);
+        if (originalClipChildren != null) {
+            view.setClipChildren(originalClipChildren);
+        }
+    }
+
+    private static class WorkspaceViewsTranslationApplier implements TranslationApplier {
+
+        @Override
+        public void apply(@NonNull View view, float x, float y) {
+            if (view instanceof NavigableAppWidgetHostView) {
+                ((NavigableAppWidgetHostView) view).setTranslationForMoveFromCenterAnimation(x, y);
+            } else if (view instanceof BubbleTextView) {
+                ((BubbleTextView) view).setTranslationForMoveFromCenterAnimation(x, y);
+            } else {
+                view.setTranslationX(x);
+                view.setTranslationY(y);
+            }
+        }
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/views/FloatingTaskView.java b/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
new file mode 100644
index 0000000..a1befc5
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
@@ -0,0 +1,241 @@
+package com.android.quickstep.views;
+
+import static com.android.launcher3.anim.Interpolators.ACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_3;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.systemui.shared.system.QuickStepContract.supportsRoundedCornersOnWindows;
+
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+
+import com.android.launcher3.InsettableFrameLayout;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherAnimUtils;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.PendingAnimation;
+import com.android.launcher3.statemanager.StatefulActivity;
+import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.launcher3.views.BaseDragLayer;
+import com.android.quickstep.util.MultiValueUpdateListener;
+
+/**
+ * Create an instance via {@link #getFloatingTaskView(StatefulActivity, TaskView, RectF)} to
+ * which will have the thumbnail from the provided existing TaskView overlaying the taskview itself.
+ *
+ * Can then animate the taskview using
+ * {@link #addAnimation(PendingAnimation, RectF, Rect, View, boolean)}
+ * giving a starting and ending bounds. Currently this is set to use the split placeholder view,
+ * but it could be generified.
+ *
+ * TODO: Figure out how to copy thumbnail data from existing TaskView to this view.
+ */
+public class FloatingTaskView extends FrameLayout {
+
+    private SplitPlaceholderView mSplitPlaceholderView;
+    private RectF mStartingPosition;
+    private final Launcher mLauncher;
+    private final boolean mIsRtl;
+    private final Rect mOutline = new Rect();
+    private PagedOrientationHandler mOrientationHandler;
+    private ImageView mImageView;
+
+    public FloatingTaskView(Context context) {
+        this(context, null);
+    }
+
+    public FloatingTaskView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public FloatingTaskView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        mLauncher = Launcher.getLauncher(context);
+        mIsRtl = Utilities.isRtl(getResources());
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mImageView = findViewById(R.id.thumbnail);
+        mImageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
+        mImageView.setLayerType(LAYER_TYPE_HARDWARE, null);
+        mSplitPlaceholderView = findViewById(R.id.split_placeholder);
+        mSplitPlaceholderView.setAlpha(0);
+        mSplitPlaceholderView.setBackgroundColor(getResources().getColor(android.R.color.white));
+    }
+
+    public static FloatingTaskView getFloatingTaskView(StatefulActivity launcher,
+            TaskView originalView, RectF positionOut) {
+        final BaseDragLayer dragLayer = launcher.getDragLayer();
+        ViewGroup parent = (ViewGroup) dragLayer.getParent();
+        final FloatingTaskView floatingView = (FloatingTaskView) launcher.getLayoutInflater()
+                .inflate(R.layout.floating_split_select_view, parent, false);
+
+        floatingView.mStartingPosition = positionOut;
+        floatingView.updateInitialPositionForView(originalView);
+        final InsettableFrameLayout.LayoutParams lp =
+                (InsettableFrameLayout.LayoutParams) floatingView.getLayoutParams();
+
+        floatingView.mSplitPlaceholderView.setLayoutParams(
+                new FrameLayout.LayoutParams(lp.width, lp.height));
+        positionOut.round(floatingView.mOutline);
+        floatingView.setPivotX(0);
+        floatingView.setPivotY(0);
+
+        // Copy bounds of exiting thumbnail into ImageView
+        TaskThumbnailView thumbnail = originalView.getThumbnail();
+        floatingView.mImageView.setImageBitmap(thumbnail.getThumbnail());
+        floatingView.mImageView.setVisibility(VISIBLE);
+
+        floatingView.mOrientationHandler =
+                originalView.getRecentsView().getPagedOrientationHandler();
+        floatingView.mSplitPlaceholderView.setIcon(originalView.getIconView());
+        floatingView.mSplitPlaceholderView.getIcon()
+                .setRotation(floatingView.mOrientationHandler.getDegreesRotated());
+        parent.addView(floatingView);
+        return floatingView;
+    }
+
+    public void updateInitialPositionForView(TaskView originalView) {
+        View thumbnail = originalView.getThumbnail();
+        Rect viewBounds = new Rect(0, 0, thumbnail.getWidth(), thumbnail.getHeight());
+        Utilities.getBoundsForViewInDragLayer(mLauncher.getDragLayer(), thumbnail, viewBounds,
+                true /* ignoreTransform */, null /* recycle */,
+                mStartingPosition);
+        mStartingPosition.offset(originalView.getTranslationX(), originalView.getTranslationY());
+        final InsettableFrameLayout.LayoutParams lp = new InsettableFrameLayout.LayoutParams(
+                Math.round(mStartingPosition.width()),
+                Math.round(mStartingPosition.height()));
+        initPosition(mStartingPosition, lp);
+        setLayoutParams(lp);
+    }
+
+    // TODO(194414938) set correct corner radii
+    public void update(RectF position, float progress, float windowRadius) {
+        MarginLayoutParams lp = (MarginLayoutParams) getLayoutParams();
+
+        float dX = mIsRtl
+                ? position.left - (lp.getMarginStart() - lp.width)
+                : position.left - lp.getMarginStart();
+        float dY = position.top - lp.topMargin;
+
+        setTranslationX(dX);
+        setTranslationY(dY);
+
+        float scaleX = position.width() / lp.width;
+        float scaleY = position.height() / lp.height;
+        setScaleX(scaleX);
+        setScaleY(scaleY);
+        float childScaleX = 1f / scaleX;
+        float childScaleY = 1f / scaleY;
+
+        invalidate();
+        // TODO(194414938) seems like this scale value could be fine tuned, some stretchiness
+        mImageView.setScaleX(1f / scaleX + scaleX * progress);
+        mImageView.setScaleY(1f / scaleY + scaleY * progress);
+        mOrientationHandler.setPrimaryScale(mSplitPlaceholderView.getIcon(), childScaleX);
+        mOrientationHandler.setSecondaryScale(mSplitPlaceholderView.getIcon(), childScaleY);
+    }
+
+    protected void initPosition(RectF pos, InsettableFrameLayout.LayoutParams lp) {
+        mStartingPosition.set(pos);
+        lp.ignoreInsets = true;
+        // Position the floating view exactly on top of the original
+        lp.topMargin = Math.round(pos.top);
+        if (mIsRtl) {
+            lp.setMarginStart(Math.round(mLauncher.getDeviceProfile().widthPx - pos.right));
+        } else {
+            lp.setMarginStart(Math.round(pos.left));
+        }
+        // Set the properties here already to make sure they are available when running the first
+        // animation frame.
+        int left = mIsRtl
+                ? mLauncher.getDeviceProfile().widthPx - lp.getMarginStart() - lp.width
+                : lp.leftMargin;
+        layout(left, lp.topMargin, left + lp.width, lp.topMargin + lp.height);
+    }
+
+    public void addAnimation(PendingAnimation animation, RectF startingBounds, Rect endBounds,
+            View viewToCover, boolean fadeWithThumbnail) {
+        final BaseDragLayer dragLayer = mLauncher.getDragLayer();
+        int[] dragLayerBounds = new int[2];
+        dragLayer.getLocationOnScreen(dragLayerBounds);
+        SplitOverlayProperties prop = new SplitOverlayProperties(endBounds,
+                startingBounds, viewToCover, dragLayerBounds[0],
+                dragLayerBounds[1]);
+
+        ValueAnimator transitionAnimator = ValueAnimator.ofFloat(0, 1);
+        animation.add(transitionAnimator);
+        long animDuration = animation.getDuration();
+        Rect crop = new Rect();
+        RectF floatingTaskViewBounds = new RectF();
+        final float initialWindowRadius = supportsRoundedCornersOnWindows(getResources())
+                ? Math.max(crop.width(), crop.height()) / 2f
+                : 0f;
+
+        if (fadeWithThumbnail) {
+            animation.addFloat(mSplitPlaceholderView, SplitPlaceholderView.ALPHA_FLOAT,
+                    0, 1, ACCEL);
+            animation.addFloat(mImageView, LauncherAnimUtils.VIEW_ALPHA,
+                    1, 0, DEACCEL_3);
+        }
+
+        MultiValueUpdateListener listener = new MultiValueUpdateListener() {
+            final FloatProp mWindowRadius = new FloatProp(initialWindowRadius,
+                    initialWindowRadius, 0, animDuration, LINEAR);
+            final FloatProp mDx = new FloatProp(0, prop.dX, 0, animDuration, LINEAR);
+            final FloatProp mDy = new FloatProp(0, prop.dY, 0, animDuration, LINEAR);
+            final FloatProp mTaskViewScaleX = new FloatProp(prop.initialTaskViewScaleX,
+                    prop.finalTaskViewScaleX, 0, animDuration, LINEAR);
+            final FloatProp mTaskViewScaleY = new FloatProp(prop.initialTaskViewScaleY,
+                    prop.finalTaskViewScaleY, 0, animDuration, LINEAR);
+            @Override
+            public void onUpdate(float percent, boolean initOnly) {
+                // Calculate the icon position.
+                floatingTaskViewBounds.set(startingBounds);
+                floatingTaskViewBounds.offset(mDx.value, mDy.value);
+                Utilities.scaleRectFAboutCenter(floatingTaskViewBounds, mTaskViewScaleX.value,
+                        mTaskViewScaleY.value);
+
+                update(floatingTaskViewBounds, percent, mWindowRadius.value * 1);
+            }
+        };
+        transitionAnimator.addUpdateListener(listener);
+    }
+
+    private static class SplitOverlayProperties {
+
+        private final float initialTaskViewScaleX;
+        private final float initialTaskViewScaleY;
+        private final float finalTaskViewScaleX;
+        private final float finalTaskViewScaleY;
+        private final float dX;
+        private final float dY;
+
+        SplitOverlayProperties(Rect endBounds, RectF startTaskViewBounds, View view,
+                int dragLayerLeft, int dragLayerTop) {
+            float maxScaleX = endBounds.width() / startTaskViewBounds.width();
+            float maxScaleY = endBounds.height() / startTaskViewBounds.height();
+
+            initialTaskViewScaleX = view.getScaleX();
+            initialTaskViewScaleY = view.getScaleY();
+            finalTaskViewScaleX = maxScaleX;
+            finalTaskViewScaleY = maxScaleY;
+
+            // Animate the app icon to the center of the window bounds in screen coordinates.
+            float centerX = endBounds.centerX() - dragLayerLeft;
+            float centerY = endBounds.centerY() - dragLayerTop;
+
+            dX = centerX - startTaskViewBounds.centerX();
+            dY = centerY - startTaskViewBounds.centerY();
+        }
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
new file mode 100644
index 0000000..cd20f4b
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
@@ -0,0 +1,137 @@
+package com.android.quickstep.views;
+
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.ViewGroup;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.R;
+import com.android.quickstep.RecentsModel;
+import com.android.quickstep.TaskThumbnailCache;
+import com.android.quickstep.util.CancellableTask;
+import com.android.quickstep.util.RecentsOrientedState;
+import com.android.systemui.shared.recents.model.Task;
+
+/**
+ * TaskView that contains and shows thumbnails for not one, BUT TWO(!!) tasks
+ *
+ * That's right. If you call within the next 5 minutes we'll go ahead and double your order and
+ * send you !! TWO !! Tasks along with their TaskThumbnailViews complimentary. On. The. House.
+ * And not only that, we'll even clean up your thumbnail request if you don't like it.
+ * All the benefits of one TaskView, except DOUBLED!
+ *
+ * (Icon loading sold separately, fees may apply. Shipping & Handling for Overlays not included).
+ */
+public class GroupedTaskView extends TaskView {
+
+    private Task mSecondaryTask;
+    private TaskThumbnailView mSnapshotView2;
+    private CancellableTask mThumbnailLoadRequest2;
+
+    public GroupedTaskView(Context context) {
+        super(context);
+    }
+
+    public GroupedTaskView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public GroupedTaskView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mSnapshotView2 = findViewById(R.id.bottomright_snapshot);
+    }
+
+    public void bind(Task primary, Task secondary, RecentsOrientedState orientedState) {
+        super.bind(primary, orientedState);
+        mSecondaryTask = secondary;
+        mTaskIdContainer[1] = secondary.key.id;
+        mTaskIdAttributeContainer[1] = new TaskIdAttributeContainer(secondary, mSnapshotView2);
+        mSnapshotView2.bind(secondary);
+        adjustThumbnailBoundsForSplit();
+    }
+
+    @Override
+    public void onTaskListVisibilityChanged(boolean visible, int changes) {
+        super.onTaskListVisibilityChanged(visible, changes);
+        if (visible) {
+            RecentsModel model = RecentsModel.INSTANCE.get(getContext());
+            TaskThumbnailCache thumbnailCache = model.getThumbnailCache();
+
+            if (needsUpdate(changes, FLAG_UPDATE_THUMBNAIL)) {
+                mThumbnailLoadRequest2 = thumbnailCache.updateThumbnailInBackground(mSecondaryTask,
+                        thumbnailData -> mSnapshotView2.setThumbnail(
+                                mSecondaryTask, thumbnailData
+                        ));
+            }
+
+            if (needsUpdate(changes, FLAG_UPDATE_ICON)) {
+                // TODO What's the Icon for this going to look like? :o
+            }
+        } else {
+            if (needsUpdate(changes, FLAG_UPDATE_THUMBNAIL)) {
+                mSnapshotView2.setThumbnail(null, null);
+                // Reset the task thumbnail reference as well (it will be fetched from the cache or
+                // reloaded next time we need it)
+                mSecondaryTask.thumbnail = null;
+            }
+            if (needsUpdate(changes, FLAG_UPDATE_ICON)) {
+                // TODO
+            }
+        }
+    }
+
+    @Override
+    protected void cancelPendingLoadTasks() {
+        super.cancelPendingLoadTasks();
+        if (mThumbnailLoadRequest2 != null) {
+            mThumbnailLoadRequest2.cancel();
+            mThumbnailLoadRequest2 = null;
+        }
+    }
+
+    @Override
+    public void onRecycle() {
+        super.onRecycle();
+        mSnapshotView2.setThumbnail(mSecondaryTask, null);
+    }
+
+    @Override
+    public void setOverlayEnabled(boolean overlayEnabled) {
+        super.setOverlayEnabled(overlayEnabled);
+        mSnapshotView2.setOverlayEnabled(overlayEnabled);
+    }
+
+    private void adjustThumbnailBoundsForSplit() {
+        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
+        ViewGroup.LayoutParams primaryLp = mSnapshotView.getLayoutParams();
+        primaryLp.width = mSecondaryTask == null ?
+                MATCH_PARENT :
+                getWidth();
+        int spaceAboveSnapshot = deviceProfile.overviewTaskThumbnailTopMarginPx;
+        // TODO get divider height
+        int dividerBar = 20;
+        primaryLp.height = mSecondaryTask == null ?
+                MATCH_PARENT :
+                (getHeight() - spaceAboveSnapshot - dividerBar) / 2;
+        mSnapshotView.setLayoutParams(primaryLp);
+
+        if (mSecondaryTask == null) {
+            mSnapshotView2.setVisibility(GONE);
+            return;
+        }
+
+        mSnapshotView2.setVisibility(VISIBLE);
+        ViewGroup.LayoutParams secondaryLp = mSnapshotView2.getLayoutParams();
+        secondaryLp.width = getWidth();
+        secondaryLp.height = primaryLp.height;
+        mSnapshotView2.setLayoutParams(secondaryLp);
+        mSnapshotView2.setTranslationY(primaryLp.height + spaceAboveSnapshot + dividerBar);
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/views/IconView.java b/quickstep/src/com/android/quickstep/views/IconView.java
index 5b0ade0..813e653 100644
--- a/quickstep/src/com/android/quickstep/views/IconView.java
+++ b/quickstep/src/com/android/quickstep/views/IconView.java
@@ -17,8 +17,10 @@
 
 import android.content.Context;
 import android.graphics.Canvas;
+import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
+import android.view.Gravity;
 import android.view.View;
 
 import com.android.launcher3.Utilities;
@@ -30,6 +32,7 @@
 public class IconView extends View {
 
     private Drawable mDrawable;
+    private int mDrawableWidth, mDrawableHeight;
 
     public IconView(Context context) {
         super(context);
@@ -50,11 +53,29 @@
         mDrawable = d;
         if (mDrawable != null) {
             mDrawable.setCallback(this);
-            mDrawable.setBounds(0, 0, getWidth(), getHeight());
+            setDrawableSizeInternal(getWidth(), getHeight());
         }
         invalidate();
     }
 
+    /**
+     * Sets the size of the icon drawable.
+     */
+    public void setDrawableSize(int iconWidth, int iconHeight) {
+        mDrawableWidth = iconWidth;
+        mDrawableHeight = iconHeight;
+        if (mDrawable != null) {
+            setDrawableSizeInternal(getWidth(), getHeight());
+        }
+    }
+
+    private void setDrawableSizeInternal(int selfWidth, int selfHeight) {
+        Rect selfRect = new Rect(0, 0, selfWidth, selfHeight);
+        Rect drawableRect = new Rect();
+        Gravity.apply(Gravity.CENTER, mDrawableWidth, mDrawableHeight, selfRect, drawableRect);
+        mDrawable.setBounds(drawableRect);
+    }
+
     public Drawable getDrawable() {
         return mDrawable;
     }
@@ -63,7 +84,7 @@
     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
         super.onSizeChanged(w, h, oldw, oldh);
         if (mDrawable != null) {
-            mDrawable.setBounds(0, 0, w, h);
+            setDrawableSizeInternal(w, h);
         }
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
index 65956d5..6b2d19c 100644
--- a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -38,6 +38,7 @@
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.quickstep.LauncherActivityInterface;
+import com.android.quickstep.util.SplitSelectStateController;
 import com.android.systemui.plugins.PluginListener;
 import com.android.systemui.plugins.RecentsExtraCard;
 
@@ -81,7 +82,8 @@
     }
 
     @Override
-    public void init(OverviewActionsView actionsView, SplitPlaceholderView splitPlaceholderView) {
+    public void init(OverviewActionsView actionsView,
+            SplitSelectStateController splitPlaceholderView) {
         super.init(actionsView, splitPlaceholderView);
         setContentAlpha(0);
     }
@@ -225,6 +227,7 @@
         } else {
             if (mActivity.isInState(LauncherState.OVERVIEW_MODAL_TASK)) {
                 mActivity.getStateManager().goToState(LauncherState.OVERVIEW);
+                resetModalVisuals();
             }
         }
     }
@@ -252,9 +255,6 @@
         super.onConfigurationChanged(newConfig);
         // If overview is in modal state when rotate, reset it to overview state without running
         // animation.
-        if (mActivity.isInState(OVERVIEW_MODAL_TASK)) {
-            mActivity.getStateManager().goToState(LauncherState.OVERVIEW, false);
-            resetModalVisuals();
-        }
+        setModalStateEnabled(false);
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
index 8c115e5..a2d2179 100644
--- a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
+++ b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
@@ -16,7 +16,6 @@
 
 package com.android.quickstep.views;
 
-import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_OVERVIEW_SHARE;
 
 import android.content.Context;
@@ -33,7 +32,6 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
 import com.android.quickstep.SysUINavigationMode;
@@ -90,9 +88,6 @@
 
     protected T mCallbacks;
 
-    private float mModalness;
-    private float mModalTransformY;
-
     protected DeviceProfile mDp;
 
     public OverviewActionsView(Context context) {
@@ -180,7 +175,6 @@
         } else {
             mDisabledFlags &= ~disabledFlags;
         }
-        //
         boolean isEnabled = (mDisabledFlags & ~DISABLED_ROTATED) == 0;
         LayoutUtils.setViewEnabled(this, isEnabled);
     }
@@ -226,29 +220,6 @@
         requestLayout();
     }
 
-    /**
-     * The current task is fully modal (modalness = 1) when it is shown on its own in a modal
-     * way. Modalness 0 means the task is shown in context with all the other tasks.
-     */
-    public void setTaskModalness(float modalness) {
-        mModalness = modalness;
-        applyTranslationY();
-    }
-
-    public void setModalTransformY(float modalTransformY) {
-        mModalTransformY = modalTransformY;
-        applyTranslationY();
-    }
-
-    private void applyTranslationY() {
-        setTranslationY(getModalTrans(mModalTransformY));
-    }
-
-    private float getModalTrans(float endTranslation) {
-        float progress = ACCEL_DEACCEL.getInterpolation(mModalness);
-        return Utilities.mapRange(progress, 0, endTranslation);
-    }
-
     /** Get the top margin associated with the action buttons in Overview. */
     public static int getOverviewActionsTopMarginPx(
             SysUINavigationMode.Mode mode, DeviceProfile dp) {
@@ -261,7 +232,7 @@
             return dp.overviewActionsMarginThreeButtonPx;
         }
 
-        return dp.overviewActionsMarginGesturePx;
+        return dp.overviewActionsTopMarginGesturePx;
     }
 
     /** Get the bottom margin associated with the action buttons in Overview. */
@@ -277,6 +248,6 @@
             return dp.overviewActionsMarginThreeButtonPx + inset;
         }
 
-        return dp.overviewActionsMarginGesturePx + inset;
+        return dp.overviewActionsBottomMarginGesturePx + inset;
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index fa4d6a1..ef52b41 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -19,6 +19,7 @@
 import static android.view.Surface.ROTATION_0;
 import static android.view.View.MeasureSpec.EXACTLY;
 import static android.view.View.MeasureSpec.makeMeasureSpec;
+import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
 
 import static com.android.launcher3.AbstractFloatingView.TYPE_TASK_MENU;
 import static com.android.launcher3.AbstractFloatingView.getTopOpenViewWithType;
@@ -32,7 +33,6 @@
 import static com.android.launcher3.Utilities.squaredHypot;
 import static com.android.launcher3.Utilities.squaredTouchSlop;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
-import static com.android.launcher3.anim.Interpolators.ACCEL_0_5;
 import static com.android.launcher3.anim.Interpolators.ACCEL_0_75;
 import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
@@ -43,6 +43,7 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_DISMISS_SWIPE_UP;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_LAUNCH_SWIPE_DOWN;
 import static com.android.launcher3.statehandlers.DepthController.DEPTH;
+import static com.android.launcher3.testing.TestProtocol.TASK_VIEW_ID_CRASH;
 import static com.android.launcher3.touch.PagedOrientationHandler.CANVAS_TRANSLATE;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
@@ -51,6 +52,7 @@
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NON_ZERO_ROTATION;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NO_RECENTS;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NO_TASKS;
+import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_CLOSING;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -83,8 +85,8 @@
 import android.text.TextPaint;
 import android.util.AttributeSet;
 import android.util.FloatProperty;
+import android.util.Log;
 import android.util.SparseBooleanArray;
-import android.view.Gravity;
 import android.view.HapticFeedbackConstants;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
@@ -96,7 +98,6 @@
 import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.view.animation.Interpolator;
-import android.widget.FrameLayout;
 import android.widget.ListView;
 import android.widget.OverScroller;
 
@@ -126,11 +127,12 @@
 import com.android.launcher3.touch.OverScroll;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.DynamicResource;
+import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.ResourceBasedOverride.Overrides;
-import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.RunnableList;
+import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.TranslateEdgeEffect;
@@ -143,11 +145,13 @@
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.RecentsModel.TaskVisualsChangeListener;
 import com.android.quickstep.RemoteAnimationTargets;
+import com.android.quickstep.SwipeUpAnimationLogic.RemoteTargetHandle;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskOverlayFactory;
 import com.android.quickstep.TaskThumbnailCache;
 import com.android.quickstep.TaskViewUtils;
 import com.android.quickstep.ViewUtils;
+import com.android.quickstep.util.LauncherSplitScreenListener;
 import com.android.quickstep.util.LayoutUtils;
 import com.android.quickstep.util.RecentsOrientedState;
 import com.android.quickstep.util.SplitScreenBounds;
@@ -317,7 +321,13 @@
                     view.setScaleY(scale);
                     view.mLastComputedTaskStartPushOutDistance = null;
                     view.mLastComputedTaskEndPushOutDistance = null;
-                    view.mLiveTileTaskViewSimulator.recentsViewScale.value = scale;
+                    view.runActionOnRemoteHandles(new Consumer<RemoteTargetHandle>() {
+                        @Override
+                        public void accept(RemoteTargetHandle remoteTargetHandle) {
+                            remoteTargetHandle.mTaskViewSimulator.recentsViewScale.value =
+                                    scale;
+                        }
+                    });
                     view.setTaskViewsResistanceTranslation(view.mTaskViewsSecondaryTranslation);
                     view.updatePageOffsets();
                 }
@@ -348,6 +358,9 @@
     private static final int ADDITION_TASK_DURATION = 200;
     private static final float INITIAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET = 0.55f;
     private static final float ADDITIONAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET = 0.05f;
+    private static final float ANIMATION_DISMISS_PROGRESS_MIDPOINT = 0.5f;
+
+    private static final float SIGNIFICANT_MOVE_THRESHOLD_TABLET = 0.15f;
 
     protected final RecentsOrientedState mOrientationState;
     protected final BaseActivityInterface<STATE_TYPE, ACTIVITY_TYPE> mSizeStrategy;
@@ -355,8 +368,14 @@
     protected SurfaceTransactionApplier mSyncTransactionApplier;
     protected int mTaskWidth;
     protected int mTaskHeight;
-    protected final TransformParams mLiveTileParams = new TransformParams();
-    protected final TaskViewSimulator mLiveTileTaskViewSimulator;
+    // Used to position the top of a task in the top row of the grid
+    private float mTaskGridVerticalDiff;
+    // The vertical space one grid task takes + space between top and bottom row.
+    private float mTopBottomRowHeightDiff;
+    // mTaskGridVerticalDiff and mTopBottomRowHeightDiff summed together provides the top
+    // position for bottom row of grid tasks.
+
+    protected RemoteTargetHandle[] mRemoteTargetHandles;
     protected final Rect mLastComputedTaskSize = new Rect();
     protected final Rect mLastComputedGridSize = new Rect();
     protected final Rect mLastComputedGridTaskSize = new Rect();
@@ -367,6 +386,7 @@
     protected final Rect mTempRect = new Rect();
     protected final RectF mTempRectF = new RectF();
     private final PointF mTempPointF = new PointF();
+    private final Matrix mTempMatrix = new Matrix();
     private final float[] mTempFloat = new float[1];
     private final List<OnScrollChangedListener> mScrollListeners = new ArrayList<>();
 
@@ -376,7 +396,6 @@
     protected final ACTIVITY_TYPE mActivity;
     private final float mFastFlingVelocity;
     private final RecentsModel mModel;
-    private final int mRowSpacing;
     private final int mGridSideMargin;
     private final ClearAllButton mClearAllButton;
     private final Rect mClearAllButtonDeadZoneRect = new Rect();
@@ -391,7 +410,11 @@
 
     private final InvariantDeviceProfile mIdp;
 
+    /**
+     * Getting views should be done via {@link #getTaskViewFromPool(boolean)}
+     */
     private final ViewPool<TaskView> mTaskViewPool;
+    private final ViewPool<GroupedTaskView> mGroupedTaskViewPool;
 
     private final TaskOverlayFactory mTaskOverlayFactory;
 
@@ -434,7 +457,7 @@
             }
 
             // Remove the task immediately from the task list
-            TaskView taskView = getTaskView(taskId);
+            TaskView taskView = getTaskViewByTaskId(taskId);
             if (taskView != null) {
                 removeView(taskView);
             }
@@ -456,7 +479,7 @@
                 return;
             }
 
-            TaskView taskView = getTaskView(taskId);
+            TaskView taskView = getTaskViewByTaskId(taskId);
             if (taskView == null) {
                 return;
             }
@@ -489,13 +512,18 @@
     private int mTaskListChangeId = -1;
 
     // Only valid until the launcher state changes to NORMAL
-    protected int mRunningTaskId = -1;
+    /**
+     * ID for the current running TaskView view, unique amongst TaskView instances. ID's are set
+     * through {@link #getTaskViewFromPool(boolean)} and incremented by {@link #mTaskViewIdCount}
+     */
+    protected int mRunningTaskViewId = -1;
+    private int mTaskViewIdCount;
+    private final int[] INVALID_TASK_IDS = new int[]{-1, -1};
     protected boolean mRunningTaskTileHidden;
-    private Task mTmpRunningTask;
-    protected int mFocusedTaskId = -1;
-    private float mFocusedTaskRatio;
+    private Task[] mTmpRunningTasks;
+    protected int mFocusedTaskViewId = -1;
 
-    private boolean mRunningTaskIconScaledDown = false;
+    private boolean mTaskIconScaledDown = false;
     private boolean mRunningTaskShowScreenshot = false;
 
     private boolean mOverviewStateEnabled;
@@ -536,15 +564,18 @@
     /**
      * Placeholder view indicating where the first split screen selected app will be placed
      */
-    private SplitPlaceholderView mSplitPlaceholderView;
+    private SplitSelectStateController mSplitSelectStateController;
     /**
      * The first task that split screen selection was initiated with. When split select state is
      * initialized, we create a
-     * {@link #createTaskDismissAnimation(TaskView, boolean, boolean, long)} for this TaskView but
-     * don't actually remove the task since the user might back out. As such, we also ensure this
-     * View doesn't go back into the {@link #mTaskViewPool}, see {@link #onViewRemoved(View)}
+     * {@link #createTaskDismissAnimation(TaskView, boolean, boolean, long, boolean)} for this
+     * TaskView but don't actually remove the task since the user might back out. As such, we also
+     * ensure this View doesn't go back into the {@link #mTaskViewPool},
+     * see {@link #onViewRemoved(View)}
      */
     private TaskView mSplitHiddenTaskView;
+    private TaskView mSecondSplitHiddenTaskView;
+
     /**
      * Keeps track of the index of the TaskView that split screen was initialized with so we know
      * where to insert it back into list of taskViews in case user backs out of entering split
@@ -554,6 +585,13 @@
      * removed from recentsView
      */
     private int mSplitHiddenTaskViewIndex;
+    private FloatingTaskView mFirstFloatingTaskView;
+    private FloatingTaskView mSecondFloatingTaskView;
+
+    /**
+     * The task to be removed and immediately re-added. Should not be added to task pool.
+     */
+    private TaskView mMovingTaskView;
 
     // Keeps track of the index where the first TaskView should be
     private int mTaskViewStartIndex = 0;
@@ -575,11 +613,11 @@
             };
 
     private RunnableList mSideTaskLaunchCallback;
+    private TaskLaunchListener mTaskLaunchListener;
 
     public RecentsView(Context context, AttributeSet attrs, int defStyleAttr,
             BaseActivityInterface sizeStrategy) {
         super(context, attrs, defStyleAttr);
-        setPageSpacing(getResources().getDimensionPixelSize(R.dimen.recents_page_spacing));
         setEnableFreeScroll(true);
         mSizeStrategy = sizeStrategy;
         mActivity = BaseActivity.fromContext(context);
@@ -598,10 +636,12 @@
         mClearAllButton.setOnClickListener(this::dismissAllTasks);
         mTaskViewPool = new ViewPool<>(context, this, R.layout.task, 20 /* max size */,
                 10 /* initial size */);
+        // There's only one pair of grouped tasks we can envision at the moment
+        mGroupedTaskViewPool = new ViewPool<>(context, this,
+                R.layout.task_grouped, 2 /* max size */, 1 /* initial size */);
 
         mIsRtl = mOrientationHandler.getRecentsRtlSetting(getResources());
         setLayoutDirection(mIsRtl ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR);
-        mRowSpacing = getResources().getDimensionPixelSize(R.dimen.overview_grid_row_spacing);
         mGridSideMargin = getResources().getDimensionPixelSize(R.dimen.overview_grid_side_margin);
         mSquaredTouchSlop = squaredTouchSlop(context);
 
@@ -629,12 +669,6 @@
         // Initialize quickstep specific cache params here, as this is constructed only once
         mActivity.getViewCache().setCacheSize(R.layout.digital_wellbeing_toast, 5);
 
-        mLiveTileTaskViewSimulator = new TaskViewSimulator(getContext(), getSizeStrategy(),
-                true /* isForLiveTile */);
-        mLiveTileTaskViewSimulator.recentsViewScale.value = 1;
-        mLiveTileTaskViewSimulator.setOrientationState(mOrientationState);
-        mLiveTileTaskViewSimulator.setDrawsBelowRecents(true);
-
         mTintingColor = getForegroundScrimDimColor(context);
     }
 
@@ -682,7 +716,7 @@
             super.dispatchDraw(canvas);
         }
         if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mEnableDrawingLiveTile
-                && mLiveTileParams.getTargetSet() != null) {
+                && mRemoteTargetHandles != null) {
             redrawLiveTile();
         }
     }
@@ -722,11 +756,15 @@
     @Override
     public Task onTaskThumbnailChanged(int taskId, ThumbnailData thumbnailData) {
         if (mHandleTaskStackChanges) {
-            TaskView taskView = getTaskView(taskId);
+            TaskView taskView = getTaskViewByTaskId(taskId);
             if (taskView != null) {
-                Task task = taskView.getTask();
-                taskView.getThumbnail().setThumbnail(task, thumbnailData);
-                return task;
+                for (TaskView.TaskIdAttributeContainer container :
+                        taskView.getTaskIdAttributeContainers()) {
+                    if (container == null || taskId != container.getTask().key.id) {
+                        continue;
+                    }
+                    container.getThumbnailView().setThumbnail(container.getTask(), thumbnailData);
+                }
             }
         }
         return null;
@@ -752,7 +790,7 @@
      * @param refreshNow Refresh immediately if it's true.
      */
     public TaskView updateThumbnail(int taskId, ThumbnailData thumbnailData, boolean refreshNow) {
-        TaskView taskView = getTaskView(taskId);
+        TaskView taskView = getTaskViewByTaskId(taskId);
         if (taskView != null) {
             taskView.getThumbnail().setThumbnail(taskView.getTask(), thumbnailData, refreshNow);
         }
@@ -765,18 +803,18 @@
         updateTaskStackListenerState();
     }
 
-    public void init(OverviewActionsView actionsView, SplitPlaceholderView splitPlaceholderView) {
+    public void init(OverviewActionsView actionsView, SplitSelectStateController splitController) {
         mActionsView = actionsView;
         mActionsView.updateHiddenFlags(HIDDEN_NO_TASKS, getTaskViewCount() == 0);
-        mSplitPlaceholderView = splitPlaceholderView;
+        mSplitSelectStateController = splitController;
     }
 
-    public SplitPlaceholderView getSplitPlaceholder() {
-        return mSplitPlaceholderView;
+    public SplitSelectStateController getSplitPlaceholder() {
+        return mSplitSelectStateController;
     }
 
     public boolean isSplitSelectionActive() {
-        return mSplitPlaceholderView.getSplitController().isSplitSelectActive();
+        return mSplitSelectStateController.isSplitSelectActive();
     }
 
     @Override
@@ -787,7 +825,8 @@
         mActivity.addMultiWindowModeChangedListener(mMultiWindowModeChangedListener);
         TaskStackChangeListeners.getInstance().registerTaskStackListener(mTaskStackListener);
         mSyncTransactionApplier = new SurfaceTransactionApplier(this);
-        mLiveTileParams.setSyncTransactionApplier(mSyncTransactionApplier);
+        runActionOnRemoteHandles(remoteTargetHandle -> remoteTargetHandle.mTransformParams
+                .setSyncTransactionApplier(mSyncTransactionApplier));
         RecentsModel.INSTANCE.get(getContext()).addThumbnailChangeListener(this);
         mIPipAnimationListener.setActivityAndRecentsView(mActivity, this);
         SystemUiProxy.INSTANCE.get(getContext()).setPinnedStackAnimationListener(
@@ -805,7 +844,8 @@
         mActivity.removeMultiWindowModeChangedListener(mMultiWindowModeChangedListener);
         TaskStackChangeListeners.getInstance().unregisterTaskStackListener(mTaskStackListener);
         mSyncTransactionApplier = null;
-        mLiveTileParams.setSyncTransactionApplier(null);
+        runActionOnRemoteHandles(remoteTargetHandle -> remoteTargetHandle.mTransformParams
+                .setSyncTransactionApplier(null));
         executeSideTaskLaunchCallback();
         RecentsModel.INSTANCE.get(getContext()).removeThumbnailChangeListener(this);
         SystemUiProxy.INSTANCE.get(getContext()).setPinnedStackAnimationListener(null);
@@ -819,12 +859,22 @@
     public void onViewRemoved(View child) {
         super.onViewRemoved(child);
 
-        // Clear the task data for the removed child if it was visible unless it's the initial
-        // taskview for entering split screen, we only pretend to dismiss the task
-        if (child instanceof TaskView && child != mSplitHiddenTaskView) {
+        // Clear the task data for the removed child if it was visible unless:
+        // - It's the initial taskview for entering split screen, we only pretend to dismiss the
+        // task
+        // - It's the focused task to be moved to the front, we immediately re-add the task
+        if (child instanceof TaskView && child != mSplitHiddenTaskView
+                && child != mMovingTaskView) {
             TaskView taskView = (TaskView) child;
-            mHasVisibleTaskData.delete(taskView.getTask().key.id);
-            mTaskViewPool.recycle(taskView);
+            for (int i : taskView.getTaskIds()) {
+                mHasVisibleTaskData.delete(i);
+            }
+            if (child instanceof GroupedTaskView) {
+                mGroupedTaskViewPool.recycle((GroupedTaskView)taskView);
+            } else {
+                mTaskViewPool.recycle(taskView);
+            }
+            taskView.setTaskViewId(-1);
             mActionsView.updateHiddenFlags(HIDDEN_NO_TASKS, getTaskViewCount() == 0);
         }
         updateTaskStartIndex(child);
@@ -855,6 +905,21 @@
         mSideTaskLaunchCallback.add(callback::executeAllAndDestroy);
     }
 
+    /**
+     * This is a one-time callback when touching in live tile mode. It's reset to null right
+     * after it's called.
+     */
+    public void setTaskLaunchListener(TaskLaunchListener taskLaunchListener) {
+        mTaskLaunchListener = taskLaunchListener;
+    }
+
+    public void onTaskLaunchedInLiveTileMode() {
+        if (mTaskLaunchListener != null) {
+            mTaskLaunchListener.onTaskLaunched();
+            mTaskLaunchListener = null;
+        }
+    }
+
     private void executeSideTaskLaunchCallback() {
         if (mSideTaskLaunchCallback != null) {
             mSideTaskLaunchCallback.executeAllAndDestroy();
@@ -862,9 +927,15 @@
         }
     }
 
+    /**
+     * TODO(b/195675206) Check both taskIDs from runningTaskViewId
+     *  and launch if either of them is {@param taskId}
+     */
     public void launchSideTaskInLiveTileModeForRestartedApp(int taskId) {
-        if (mRunningTaskId != -1 && mRunningTaskId == taskId) {
-            RemoteAnimationTargets targets = getLiveTileParams().getTargetSet();
+        int runningTaskViewId = getTaskViewIdFromTaskId(taskId);
+        if (mRunningTaskViewId != -1 && mRunningTaskViewId == runningTaskViewId) {
+            TransformParams params = mRemoteTargetHandles[0].mTransformParams;
+            RemoteAnimationTargets targets = params.getTargetSet();
             if (targets != null && targets.findTask(taskId) != null) {
                 launchSideTaskInLiveTileMode(taskId, targets.apps, targets.wallpapers,
                         targets.nonApps);
@@ -875,7 +946,7 @@
     public void launchSideTaskInLiveTileMode(int taskId, RemoteAnimationTargetCompat[] apps,
             RemoteAnimationTargetCompat[] wallpaper, RemoteAnimationTargetCompat[] nonApps) {
         AnimatorSet anim = new AnimatorSet();
-        TaskView taskView = getTaskView(taskId);
+        TaskView taskView = getTaskViewByTaskId(taskId);
         if (taskView == null || !isTaskViewVisible(taskView)) {
             // TODO: Refine this animation.
             SurfaceTransactionApplier surfaceApplier =
@@ -942,10 +1013,21 @@
                 && taskEnd <= end);
     }
 
-    public TaskView getTaskView(int taskId) {
+    /**
+     * Returns true if the task is snapped.
+     *
+     * @param taskIndex the index of the task
+     */
+    public boolean isTaskSnapped(int taskIndex) {
+        return getScrollForPage(taskIndex + mTaskViewStartIndex)
+                == getPagedOrientationHandler().getPrimaryScroll(this);
+    }
+
+    public TaskView getTaskViewByTaskId(int taskId) {
         for (int i = 0; i < getTaskViewCount(); i++) {
             TaskView taskView = getTaskViewAt(i);
-            if (taskView.hasTaskId(taskId)) {
+            int[] taskIds = taskView.getTaskIds();
+            if (taskIds[0] == taskId || taskIds[1] == taskId) {
                 return taskView;
             }
         }
@@ -959,10 +1041,21 @@
         if (!enabled) {
             // Reset the running task when leaving overview since it can still have a reference to
             // its thumbnail
-            mTmpRunningTask = null;
-            if (mSplitPlaceholderView.getSplitController().isSplitSelectActive()) {
+            mTmpRunningTasks = null;
+            if (mSplitSelectStateController.isSplitSelectActive()) {
                 cancelSplitSelect(false);
             }
+            // Remove grouped tasks and recycle once we exit overview
+            int taskCount = getTaskViewCount();
+            for (int i = 0; i < taskCount; i++) {
+                View v = getTaskViewAt(i);
+                if (!(v instanceof GroupedTaskView)) {
+                    return;
+                }
+                GroupedTaskView gtv = (GroupedTaskView) v;
+                gtv.onTaskListVisibilityChanged(false);
+                removeView(gtv);
+            }
         }
         updateLocusId();
     }
@@ -989,6 +1082,7 @@
         super.onPageEndTransition();
         if (isClearAllHidden()) {
             mActionsView.updateDisabledFlags(OverviewActionsView.DISABLED_SCROLLING, false);
+        } else {
         }
         if (getNextPage() > 0) {
             setSwipeDownShouldLaunchApp(true);
@@ -996,6 +1090,12 @@
     }
 
     @Override
+    protected float getSignificantMoveThreshold() {
+        return mActivity.getDeviceProfile().isTablet ? SIGNIFICANT_MOVE_THRESHOLD_TABLET
+                : super.getSignificantMoveThreshold();
+    }
+
+    @Override
     public boolean onTouchEvent(MotionEvent ev) {
         super.onTouchEvent(ev);
 
@@ -1097,6 +1197,42 @@
         }
     }
 
+    /**
+     * Moves the focused task to the front of the carousel in tablets, to minimize animation
+     * required to focus the task in grid.
+     */
+    public void moveFocusedTaskToFront() {
+        if (!mActivity.getDeviceProfile().overviewShowAsGrid) {
+            return;
+        }
+
+        TaskView focusedTaskView = getFocusedTaskView();
+        if (focusedTaskView == null) {
+            return;
+        }
+
+        if (indexOfChild(focusedTaskView) != mCurrentPage) {
+            return;
+        }
+
+        if (mCurrentPage == mTaskViewStartIndex) {
+            return;
+        }
+
+        int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+        int currentPageScroll = getScrollForPage(mCurrentPage);
+        mCurrentPageScrollDiff = primaryScroll - currentPageScroll;
+
+        mMovingTaskView = focusedTaskView;
+        removeView(focusedTaskView);
+        mMovingTaskView = null;
+        focusedTaskView.resetPersistentViewTransforms();
+        addView(focusedTaskView, mTaskViewStartIndex);
+        setCurrentPage(mTaskViewStartIndex);
+
+        updateGridProperties();
+    }
+
     protected void applyLoadPlan(ArrayList<Task> tasks) {
         if (mPendingAnimation != null) {
             mPendingAnimation.addEndListener(success -> applyLoadPlan(tasks));
@@ -1119,49 +1255,119 @@
         unloadVisibleTaskData(TaskView.FLAG_UPDATE_ALL);
 
         TaskView ignoreResetTaskView =
-                mIgnoreResetTaskId == -1 ? null : getTaskView(mIgnoreResetTaskId);
+                mIgnoreResetTaskId == -1 ? null : getTaskViewByTaskId(mIgnoreResetTaskId);
 
-        final int requiredTaskCount = tasks.size();
-        if (getTaskViewCount() != requiredTaskCount) {
+        int[] splitTaskIds =
+                LauncherSplitScreenListener.INSTANCE.getNoCreate().getSplitTaskIds();
+        int requiredGroupTaskViews = splitTaskIds.length / 2;
+
+        // Subtract half the number of split tasks and not total number because we've already
+        // added a GroupedTaskView when swipe up gesture happens.
+        // This will need to change if we start showing GroupedTaskViews during swipe up from home
+        int requiredTaskViewCount = tasks.size() - requiredGroupTaskViews;
+
+        if (getTaskViewCount() != requiredTaskViewCount) {
             if (indexOfChild(mClearAllButton) != -1) {
                 removeView(mClearAllButton);
             }
-            for (int i = getTaskViewCount(); i < requiredTaskCount; i++) {
-                addView(mTaskViewPool.getView());
+
+            for (int i = getTaskViewCount(); i < requiredTaskViewCount; i++) {
+                addView(getTaskViewFromPool(false));
             }
-            while (getTaskViewCount() > requiredTaskCount) {
+            while (getTaskViewCount() > requiredTaskViewCount) {
                 removeView(getChildAt(getChildCount() - 1));
             }
-            if (requiredTaskCount > 0) {
+            while (requiredGroupTaskViews > 0) {
+                // Add to front of list
+                addView(getTaskViewFromPool(true), 0);
+                requiredGroupTaskViews--;
+            }
+            if (requiredTaskViewCount > 0) {
                 addView(mClearAllButton);
             }
         }
 
-        // Rebind and reset all task views
-        for (int i = requiredTaskCount - 1; i >= 0; i--) {
-            final int pageIndex = requiredTaskCount - i - 1 + mTaskViewStartIndex;
-            final Task task = tasks.get(i);
+        // Save running task ID if it exists before rebinding all taskViews, otherwise the task from
+        // the runningTaskView currently bound could get assigned to another TaskView
+        // TODO set these type to array and check all taskIDs? Maybe we can get away w/ only one
+        int runningTaskId = getTaskIdsForTaskViewId(mRunningTaskViewId)[0];
+        int focusedTaskId = getTaskIdsForTaskViewId(mFocusedTaskViewId)[0];
+        Log.d(TASK_VIEW_ID_CRASH, "runningTaskId beforeBind: " + runningTaskId
+                + " runningTaskViewId: " + mRunningTaskViewId
+                + " forTaskView: " + getTaskViewFromTaskViewId(mRunningTaskViewId));
+
+        for (int taskViewIndex = requiredTaskViewCount - 1, taskDataIndex = tasks.size() - 1;
+                taskViewIndex >= 0;
+                taskViewIndex--, taskDataIndex--) {
+            final int pageIndex = requiredTaskViewCount - taskViewIndex - 1 + mTaskViewStartIndex;
+            final Task task = tasks.get(taskDataIndex);
             final TaskView taskView = (TaskView) getChildAt(pageIndex);
-            taskView.bind(task, mOrientationState);
+            if (taskView instanceof GroupedTaskView) {
+                Task leftTop;
+                Task rightBottom;
+                if (task.key.id == splitTaskIds[0]) {
+                    leftTop = task;
+                    taskDataIndex--;
+                    rightBottom = tasks.get(taskDataIndex);
+                } else {
+                    rightBottom = task;
+                    taskDataIndex--;
+                    leftTop = tasks.get(taskDataIndex);
+                }
+                ((GroupedTaskView) taskView).bind(leftTop, rightBottom, mOrientationState);
+            } else {
+                taskView.bind(task, mOrientationState);
+            }
         }
+
+        // Keep same previous focused task
+        TaskView newFocusedTaskView = getTaskViewByTaskId(focusedTaskId);
+        // If the list changed, maybe the focused task doesn't exist anymore
+        if (newFocusedTaskView == null && getTaskViewCount() > 0) {
+            newFocusedTaskView = getTaskViewAt(0);
+        }
+        mFocusedTaskViewId = newFocusedTaskView != null ?
+                newFocusedTaskView.getTaskViewId() : -1;
         updateTaskSize();
+        updateChildTaskOrientations();
+
+        TaskView newRunningTaskView = null;
+        if (runningTaskId != -1) {
+            // Update mRunningTaskViewId to be the new TaskView that was assigned by binding
+            // the full list of tasks to taskViews
+            newRunningTaskView = getTaskViewByTaskId(runningTaskId);
+            if (newRunningTaskView == null) {
+                StringBuilder sb = new StringBuilder();
+                for (int i = requiredTaskViewCount - 1; i >= 0; i--) {
+                    final int pageIndex = requiredTaskViewCount - i - 1 + mTaskViewStartIndex;
+                    final TaskView taskView = (TaskView) getChildAt(pageIndex);
+                    int taskViewId = taskView.getTaskViewId();
+                    sb.append(" taskViewId: " + taskViewId
+                            + " taskId: " + getTaskIdsForTaskViewId(taskViewId)[0]
+                            + " for taskView: " + taskView + "\n");
+                }
+                Log.d(TASK_VIEW_ID_CRASH, "taskViewCount: " + getTaskViewCount()
+                        + " " + sb.toString());
+            }
+            mRunningTaskViewId = newRunningTaskView.getTaskViewId();
+        }
 
         if (mNextPage == INVALID_PAGE) {
             // Set the current page to the running task, but not if settling on new task.
-            TaskView runningTaskView = getRunningTaskView();
-            if (runningTaskView != null) {
-                setCurrentPage(indexOfChild(runningTaskView));
+            if (runningTaskId != -1) {
+                setCurrentPage(indexOfChild(newRunningTaskView));
             } else if (getTaskViewCount() > 0) {
                 setCurrentPage(indexOfChild(getTaskViewAt(0)));
             }
         } else if (currentTaskId != -1) {
-            currentTaskView = getTaskView(currentTaskId);
+            currentTaskView = getTaskViewByTaskId(currentTaskId);
             if (currentTaskView != null) {
                 setCurrentPage(indexOfChild(currentTaskView));
             }
         }
 
-        if (mIgnoreResetTaskId != -1 && getTaskView(mIgnoreResetTaskId) != ignoreResetTaskView) {
+        if (mIgnoreResetTaskId != -1 &&
+                getTaskViewByTaskId(mIgnoreResetTaskId) != ignoreResetTaskView) {
             // If the taskView mapping is changing, do not preserve the visuals. Since we are
             // mostly preserving the first task, and new taskViews are added to the end, it should
             // generally map to the same task.
@@ -1205,8 +1411,9 @@
     public void resetTaskVisuals() {
         for (int i = getTaskViewCount() - 1; i >= 0; i--) {
             TaskView taskView = getTaskViewAt(i);
-            if (mIgnoreResetTaskId != taskView.getTask().key.id) {
+            if (mIgnoreResetTaskId != taskView.getTaskIds()[0]) {
                 taskView.resetViewTransforms();
+                taskView.setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
                 taskView.setStableAlpha(mContentAlpha);
                 taskView.setFullscreenProgress(mFullscreenProgress);
                 taskView.setModalness(mTaskModalness);
@@ -1216,10 +1423,12 @@
             // Since we reuse the same mLiveTileTaskViewSimulator in the RecentsView, we need
             // to reset the params after it settles in Overview from swipe up so that we don't
             // render with obsolete param values.
-            mLiveTileTaskViewSimulator.taskPrimaryTranslation.value = 0;
-            mLiveTileTaskViewSimulator.taskSecondaryTranslation.value = 0;
-            mLiveTileTaskViewSimulator.fullScreenProgress.value = 0;
-            mLiveTileTaskViewSimulator.recentsViewScale.value = 1;
+            runActionOnRemoteHandles(remoteTargetHandle -> {
+                remoteTargetHandle.mTaskViewSimulator.taskPrimaryTranslation.value = 0;
+                remoteTargetHandle.mTaskViewSimulator.taskSecondaryTranslation.value = 0;
+                remoteTargetHandle.mTaskViewSimulator.fullScreenProgress.value = 0;
+                remoteTargetHandle.mTaskViewSimulator.recentsViewScale.value = 1;
+            });
 
             // Similar to setRunningTaskHidden below, reapply the state before runningTaskView is
             // null.
@@ -1231,11 +1440,6 @@
             setRunningTaskHidden(mRunningTaskTileHidden);
         }
 
-        // Force apply the scale.
-        if (mIgnoreResetTaskId != mRunningTaskId) {
-            applyRunningTaskIconScale();
-        }
-
         updateCurveProperties();
         // Update the set of visible task's data
         loadVisibleTaskData(TaskView.FLAG_UPDATE_ALL);
@@ -1275,9 +1479,11 @@
         DeviceProfile dp = mActivity.getDeviceProfile();
         setOverviewGridEnabled(
                 mActivity.getStateManager().getState().displayOverviewTasksAsGrid(dp));
+        setPageSpacing(dp.overviewPageSpacing);
 
         // Propagate DeviceProfile change event.
-        mLiveTileTaskViewSimulator.setDp(dp);
+        runActionOnRemoteHandles(
+                remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator.setDp(dp));
         mActionsView.setDp(dp);
         mOrientationState.setDeviceProfile(dp);
 
@@ -1307,6 +1513,7 @@
                 || !mOrientationHandler.equals(oldOrientationHandler)) {
             // Changed orientations, update controllers so they intercept accordingly.
             mActivity.getDragLayer().recreateControllers();
+            setModalStateEnabled(false);
         }
 
         boolean isInLandscape = mOrientationState.getTouchRotation() != ROTATION_0
@@ -1342,36 +1549,28 @@
         mSizeStrategy.calculateGridTaskSize(mActivity, mActivity.getDeviceProfile(),
                 mLastComputedGridTaskSize, mOrientationHandler);
 
+        mTaskGridVerticalDiff = mLastComputedGridTaskSize.top - mLastComputedTaskSize.top;
+        mTopBottomRowHeightDiff =
+                mLastComputedGridTaskSize.height() + dp.overviewTaskThumbnailTopMarginPx
+                        + dp.overviewRowSpacing;
+
         // Force TaskView to update size from thumbnail
         updateTaskSize();
-
-        // Update ActionsView position
-        if (mActionsView != null) {
-            FrameLayout.LayoutParams layoutParams =
-                    (FrameLayout.LayoutParams) mActionsView.getLayoutParams();
-            if (dp.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
-                layoutParams.gravity = Gravity.BOTTOM;
-                layoutParams.bottomMargin =
-                        dp.heightPx - mInsets.bottom - mLastComputedGridSize.bottom;
-                layoutParams.leftMargin = mLastComputedTaskSize.left;
-                layoutParams.rightMargin = dp.widthPx - mLastComputedTaskSize.right;
-                // When in modal state, remove bottom margin to avoid covering content.
-                mActionsView.setModalTransformY(layoutParams.bottomMargin);
-            } else {
-                layoutParams.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
-                layoutParams.bottomMargin = 0;
-                layoutParams.leftMargin = 0;
-                layoutParams.rightMargin = 0;
-                mActionsView.setModalTransformY(0);
-            }
-            mActionsView.setLayoutParams(layoutParams);
-        }
     }
 
     /**
      * Updates TaskView scaling and translation required to support variable width.
      */
     private void updateTaskSize() {
+        updateTaskSize(false);
+    }
+
+    /**
+     * Updates TaskView scaling and translation required to support variable width.
+     *
+     * @param isTaskDismissal indicates if update was called due to task dismissal
+     */
+    private void updateTaskSize(boolean isTaskDismissal) {
         final int taskCount = getTaskViewCount();
         if (taskCount == 0) {
             return;
@@ -1381,23 +1580,21 @@
         for (int i = 0; i < taskCount; i++) {
             TaskView taskView = getTaskViewAt(i);
             taskView.updateTaskSize();
-            taskView.getPrimaryFullscreenTranslationProperty().set(taskView,
-                    accumulatedTranslationX);
-            taskView.getSecondaryFullscreenTranslationProperty().set(taskView, 0f);
+            taskView.getPrimaryNonGridTranslationProperty().set(taskView, accumulatedTranslationX);
+            taskView.getSecondaryNonGridTranslationProperty().set(taskView, 0f);
             // Compensate space caused by TaskView scaling.
             float widthDiff =
-                    taskView.getLayoutParams().width * (1 - taskView.getFullscreenScale());
+                    taskView.getLayoutParams().width * (1 - taskView.getNonGridScale());
             accumulatedTranslationX += mIsRtl ? widthDiff : -widthDiff;
         }
 
         mClearAllButton.setFullscreenTranslationPrimary(accumulatedTranslationX);
 
-        updateGridProperties();
+        updateGridProperties(isTaskDismissal);
     }
 
     public void getTaskSize(Rect outRect) {
-        mSizeStrategy.calculateTaskSize(mActivity, mActivity.getDeviceProfile(), outRect,
-                mOrientationHandler);
+        mSizeStrategy.calculateTaskSize(mActivity, mActivity.getDeviceProfile(), outRect);
         mLastComputedTaskSize.set(outRect);
     }
 
@@ -1405,21 +1602,8 @@
      * Returns the size of task selected to enter modal state.
      */
     public Point getSelectedTaskSize() {
-        mSizeStrategy.calculateTaskSize(mActivity, mActivity.getDeviceProfile(), mTempRect,
-                mOrientationHandler);
-        int taskWidth = mTempRect.width();
-        int taskHeight = mTempRect.height();
-        if (mFocusedTaskId != -1) {
-            int boxLength = Math.max(taskWidth, taskHeight);
-            if (mFocusedTaskRatio > 1) {
-                taskWidth = boxLength;
-                taskHeight = (int) (boxLength / mFocusedTaskRatio);
-            } else {
-                taskWidth = (int) (boxLength * mFocusedTaskRatio);
-                taskHeight = boxLength;
-            }
-        }
-        return new Point(taskWidth, taskHeight);
+        mSizeStrategy.calculateTaskSize(mActivity, mActivity.getDeviceProfile(), mTempRect);
+        return new Point(mTempRect.width(), mTempRect.height());
     }
 
     /** Gets the last computed task size */
@@ -1451,13 +1635,7 @@
             loadVisibleTaskData(TaskView.FLAG_UPDATE_ALL);
 
             // After scrolling, update ActionsView's visibility.
-            TaskView focusedTaskView = getFocusedTaskView();
-            if (focusedTaskView != null) {
-                float scrollDiff = Math.abs(getScrollForPage(indexOfChild(focusedTaskView))
-                        - mOrientationHandler.getPrimaryScroll(this));
-                float delta = (mGridSideMargin - scrollDiff) / (float) mGridSideMargin;
-                mActionsView.getScrollAlpha().setValue(Utilities.boundToRange(delta, 0, 1));
-            }
+            updateActionsViewScrollAlpha();
         }
 
         // Update the high res thumbnail loader state
@@ -1465,6 +1643,20 @@
         return scrolling;
     }
 
+    private void updateActionsViewScrollAlpha() {
+        float scrollAlpha = 1f;
+        if (showAsGrid()) {
+            TaskView focusedTaskView = getFocusedTaskView();
+            if (focusedTaskView != null) {
+                float scrollDiff = Math.abs(getScrollForPage(indexOfChild(focusedTaskView))
+                        - mOrientationHandler.getPrimaryScroll(this));
+                float delta = (mGridSideMargin - scrollDiff) / (float) mGridSideMargin;
+                scrollAlpha = Utilities.boundToRange(delta, 0, 1);
+            }
+        }
+        mActionsView.getScrollAlpha().setValue(scrollAlpha);
+    }
+
     /**
      * Scales and adjusts translation of adjacent pages as if on a curved carousel.
      */
@@ -1478,7 +1670,7 @@
 
     @Override
     protected int getDestinationPage(int scaledScroll) {
-        if (!(mActivity.getDeviceProfile().isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get())) {
+        if (!mActivity.getDeviceProfile().overviewShowAsGrid) {
             return super.getDestinationPage(scaledScroll);
         }
 
@@ -1506,7 +1698,8 @@
      * and unloads the associated task data for tasks that are no longer visible.
      */
     public void loadVisibleTaskData(@TaskView.TaskDataChanges int dataChanges) {
-        if (!mOverviewStateEnabled || mTaskListChangeId == -1) {
+        boolean hasLeftOverview = !mOverviewStateEnabled && mScroller.isFinished();
+        if (hasLeftOverview || mTaskListChangeId == -1) {
             // Skip loading visible task data if we've already left the overview state, or if the
             // task list hasn't been loaded yet (the task views will not reflect the task list)
             return;
@@ -1542,8 +1735,17 @@
                 visible = lower <= index && index <= upper;
             }
             if (visible) {
-                if (task == mTmpRunningTask) {
-                    // Skip loading if this is the task that we are animating into
+                boolean skipLoadingTask = false;
+                if (mTmpRunningTasks != null) {
+                    for (Task t : mTmpRunningTasks) {
+                        if (task == t) {
+                            // Skip loading if this is the task that we are animating into
+                            skipLoadingTask = true;
+                            break;
+                        }
+                    }
+                }
+                if (skipLoadingTask) {
                     continue;
                 }
                 if (!mHasVisibleTaskData.get(task.key.id)) {
@@ -1571,7 +1773,7 @@
     private void unloadVisibleTaskData(@TaskView.TaskDataChanges int dataChanges) {
         for (int i = 0; i < mHasVisibleTaskData.size(); i++) {
             if (mHasVisibleTaskData.valueAt(i)) {
-                TaskView taskView = getTaskView(mHasVisibleTaskData.keyAt(i));
+                TaskView taskView = getTaskViewByTaskId(mHasVisibleTaskData.keyAt(i));
                 if (taskView != null) {
                     taskView.onTaskListVisibilityChanged(false /* visible */, dataChanges);
                 }
@@ -1586,7 +1788,7 @@
         // they want to updated their thumbnail state
         for (int i = 0; i < mHasVisibleTaskData.size(); i++) {
             if (mHasVisibleTaskData.valueAt(i)) {
-                TaskView taskView = getTaskView(mHasVisibleTaskData.keyAt(i));
+                TaskView taskView = getTaskViewByTaskId(mHasVisibleTaskData.keyAt(i));
                 if (taskView != null) {
                     // Poke the view again, which will trigger it to load high res if the state
                     // is enabled
@@ -1607,7 +1809,7 @@
         setCurrentTask(-1);
         mIgnoreResetTaskId = -1;
         mTaskListChangeId = -1;
-        mFocusedTaskId = -1;
+        mFocusedTaskViewId = getTaskViewCount() > 0 ? getTaskViewAt(0).getTaskViewId() : -1;
 
         if (mRecentsAnimationController != null) {
             if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mEnableDrawingLiveTile) {
@@ -1618,8 +1820,8 @@
             }
         }
         setEnableDrawingLiveTile(false);
-        mLiveTileParams.setTargetSet(null);
-        mLiveTileTaskViewSimulator.setDrawsBelowRecents(true);
+        runActionOnRemoteHandles(remoteTargetHandle -> remoteTargetHandle.mTransformParams
+                .setTargetSet(null));
 
         // These are relatively expensive and don't need to be done this frame (RecentsView isn't
         // visible anyway), so defer by a frame to get off the critical path, e.g. app to home.
@@ -1633,27 +1835,71 @@
         });
     }
 
-    public int getRunningTaskId() {
-        return mRunningTaskId;
+    public int getRunningTaskViewId() {
+        return mRunningTaskViewId;
+    }
+
+    protected int[] getTaskIdsForRunningTaskView() {
+        return getTaskIdsForTaskViewId(mRunningTaskViewId);
+    }
+
+    private int[] getTaskIdsForTaskViewId(int taskViewId) {
+        // For now 2 distinct task IDs is max for split screen
+        TaskView runningTaskView = getTaskViewFromTaskViewId(taskViewId);
+        if (runningTaskView == null) {
+            return INVALID_TASK_IDS;
+        }
+
+        return runningTaskView.getTaskIds();
     }
 
     public @Nullable TaskView getRunningTaskView() {
-        return getTaskView(mRunningTaskId);
-    }
-
-    public int getRunningTaskIndex() {
-        return getTaskIndexForId(mRunningTaskId);
+        return getTaskViewFromTaskViewId(mRunningTaskViewId);
     }
 
     public @Nullable TaskView getFocusedTaskView() {
-        return getTaskView(mFocusedTaskId);
+        return getTaskViewFromTaskViewId(mFocusedTaskViewId);
+    }
+
+    private TaskView getTaskViewFromTaskViewId(int taskViewId) {
+        if (taskViewId == -1) {
+            return null;
+        }
+
+        for (int i = 0; i < getTaskViewCount(); i++) {
+            TaskView taskView = getTaskViewAt(i);
+            if (taskView.getTaskViewId() == taskViewId) {
+                return taskView;
+            }
+        }
+        return null;
+    }
+
+    public int getRunningTaskIndex() {
+        TaskView taskView = getRunningTaskView();
+        return taskView == null ? -1 : indexOfChild(taskView);
+    }
+
+    protected @Nullable TaskView getHomeTaskView() {
+        return null;
     }
 
     /**
-     * Returns the width to height ratio of the focused {@link TaskView}.
+     * Handle the edge case where Recents could increment task count very high over long
+     * period of device usage. Probably will never happen, but meh.
      */
-    public float getFocusedTaskRatio() {
-        return mFocusedTaskRatio;
+    private <T extends TaskView> T getTaskViewFromPool(boolean isGrouped) {
+        T taskView = isGrouped ?
+                (T) mGroupedTaskViewPool.getView() :
+                (T) mTaskViewPool.getView();
+        taskView.setTaskViewId(mTaskViewIdCount);
+        if (mTaskViewIdCount == Integer.MAX_VALUE) {
+            mTaskViewIdCount = 0;
+        } else {
+            mTaskViewIdCount++;
+        }
+
+        return taskView;
     }
 
     /**
@@ -1661,7 +1907,7 @@
      * @return -1 if there is no task view for the task id, else the index of the task view.
      */
     public int getTaskIndexForId(int taskId) {
-        TaskView tv = getTaskView(taskId);
+        TaskView tv = getTaskViewByTaskId(taskId);
         return tv == null ? -1 : indexOfChild(tv);
     }
 
@@ -1681,7 +1927,7 @@
     /**
      * Called when a gesture from an app is starting.
      */
-    public void onGestureAnimationStart(RunningTaskInfo runningTaskInfo) {
+    public void onGestureAnimationStart(RunningTaskInfo[] runningTaskInfo) {
         mGestureActive = true;
         // This needs to be called before the other states are set since it can create the task view
         if (mOrientationState.setGestureActive(true)) {
@@ -1692,7 +1938,7 @@
         setEnableFreeScroll(false);
         setEnableDrawingLiveTile(false);
         setRunningTaskHidden(true);
-        setRunningTaskIconScaledDown(true);
+        setTaskIconScaledDown(true);
     }
 
     /**
@@ -1700,9 +1946,7 @@
      * {@link #onGestureAnimationStart} and {@link #onGestureAnimationEnd()}.
      */
     public void onSwipeUpAnimationSuccess() {
-        if (getRunningTaskView() != null) {
-            animateUpRunningTaskIconScale();
-        }
+        animateUpTaskIconScale();
         setSwipeDownShouldLaunchApp(true);
     }
 
@@ -1734,7 +1978,6 @@
         return as;
     }
 
-
     private void updateChildTaskOrientations() {
         for (int i = 0; i < getTaskViewCount(); i++) {
             getTaskViewAt(i).setOrientationState(mOrientationState);
@@ -1749,23 +1992,35 @@
      * Called when a gesture from an app has finished, and an end target has been determined.
      */
     public void onPrepareGestureEndAnimation(
-            @Nullable AnimatorSet animatorSet, GestureState.GestureEndTarget endTarget) {
+            @Nullable AnimatorSet animatorSet, GestureState.GestureEndTarget endTarget,
+            TaskViewSimulator[] taskViewSimulators) {
+        mCurrentGestureEndTarget = endTarget;
+        if (endTarget == GestureState.GestureEndTarget.RECENTS) {
+            setEnableFreeScroll(true);
+            updateGridProperties();
+        }
+
         if (mSizeStrategy.stateFromGestureEndTarget(endTarget)
                 .displayOverviewTasksAsGrid(mActivity.getDeviceProfile())) {
-            if (animatorSet == null) {
-                setGridProgress(1);
-            } else {
-                animatorSet.play(ObjectAnimator.ofFloat(this, RECENTS_GRID_PROGRESS, 1));
+            TaskView runningTaskView = getRunningTaskView();
+            float runningTaskPrimaryGridTranslation = 0;
+            if (runningTaskView != null && indexOfChild(runningTaskView) != getNextPage()) {
+                // Apply the gird translation to running task unless it's being snapped to.
+                runningTaskPrimaryGridTranslation = mOrientationHandler.getPrimaryValue(
+                        runningTaskView.getGridTranslationX(),
+                        runningTaskView.getGridTranslationY());
             }
-        }
-        mCurrentGestureEndTarget = endTarget;
-        if (endTarget == GestureState.GestureEndTarget.NEW_TASK
-                || endTarget == GestureState.GestureEndTarget.LAST_TASK) {
-            // When switching to tasks in quick switch, ensures the snapped page's scroll maintain
-            // invariant between quick switch and overview, to ensure a smooth animation transition.
-            updateGridProperties();
-        } else if (endTarget == GestureState.GestureEndTarget.RECENTS) {
-            setEnableFreeScroll(true);
+            for (TaskViewSimulator tvs : taskViewSimulators) {
+                if (animatorSet == null) {
+                    setGridProgress(1);
+                    tvs.taskPrimaryTranslation.value =
+                            runningTaskPrimaryGridTranslation;
+                } else {
+                    animatorSet.play(ObjectAnimator.ofFloat(this, RECENTS_GRID_PROGRESS, 1));
+                    animatorSet.play(tvs.taskPrimaryTranslation.animateToValue(
+                            runningTaskPrimaryGridTranslation));
+                }
+            }
         }
     }
 
@@ -1784,27 +2039,31 @@
             setRunningTaskViewShowScreenshot(true);
         }
         setRunningTaskHidden(false);
-        animateUpRunningTaskIconScale();
-
-        if (mCurrentGestureEndTarget == GestureState.GestureEndTarget.RECENTS
-                && (!showAsGrid() || getFocusedTaskView() != null)) {
-            animateActionsViewIn();
-        }
+        animateUpTaskIconScale();
+        animateActionsViewIn();
 
         mCurrentGestureEndTarget = null;
-
-        if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mActivity.getDeviceProfile().isMultiWindowMode) {
-            switchToScreenshot(
-                    () -> finishRecentsAnimation(true /* toRecents */, false /* shouldPip */,
-                            null));
-        }
     }
 
     /**
      * Returns true if we should add a stub taskView for the running task id
      */
-    protected boolean shouldAddStubTaskView(RunningTaskInfo runningTaskInfo) {
-        return runningTaskInfo != null && getTaskView(runningTaskInfo.taskId) == null;
+    protected boolean shouldAddStubTaskView(RunningTaskInfo[] runningTaskInfos) {
+        if (runningTaskInfos.length > 1) {
+            // * Always create new view for GroupedTaskView
+            // * Remove existing associated taskViews for tasks currently in split
+            for (RunningTaskInfo rti : runningTaskInfos) {
+                TaskView taskView = getTaskViewByTaskId(rti.taskId);
+                if (taskView == null) {
+                    continue;
+                }
+                taskView.onTaskListVisibilityChanged(false);
+                removeView(taskView);
+            }
+            return true;
+        }
+        RunningTaskInfo runningTaskInfo = runningTaskInfos[0];
+        return runningTaskInfo != null && getTaskViewByTaskId(runningTaskInfo.taskId) == null;
     }
 
     /**
@@ -1813,38 +2072,55 @@
      * All subsequent calls to reload will keep the task as the first item until {@link #reset()}
      * is called.  Also scrolls the view to this task.
      */
-    public void showCurrentTask(RunningTaskInfo runningTaskInfo) {
+    public void showCurrentTask(RunningTaskInfo[] runningTaskInfo) {
+        int runningTaskViewId = -1;
+        boolean needGroupTaskView = runningTaskInfo.length > 1;
+        RunningTaskInfo taskInfo = runningTaskInfo[0];
         if (shouldAddStubTaskView(runningTaskInfo)) {
             boolean wasEmpty = getChildCount() == 0;
             // Add an empty view for now until the task plan is loaded and applied
-            final TaskView taskView = mTaskViewPool.getView();
-            addView(taskView, mTaskViewStartIndex);
+            final TaskView taskView;
+            if (needGroupTaskView) {
+                taskView = getTaskViewFromPool(true);
+                RunningTaskInfo secondaryTaskInfo = runningTaskInfo[1];
+                mTmpRunningTasks = new Task[]{
+                        Task.from(new TaskKey(taskInfo), taskInfo, false),
+                        Task.from(new TaskKey(secondaryTaskInfo), secondaryTaskInfo, false)
+                };
+                addView(taskView, mTaskViewStartIndex);
+                ((GroupedTaskView)taskView).bind(mTmpRunningTasks[0], mTmpRunningTasks[1],
+                        mOrientationState);
+            } else {
+                taskView = getTaskViewFromPool(false);
+                addView(taskView, mTaskViewStartIndex);
+                // The temporary running task is only used for the duration between the start of the
+                // gesture and the task list is loaded and applied
+                mTmpRunningTasks = new Task[]{Task.from(new TaskKey(taskInfo), taskInfo, false)};
+                taskView.bind(mTmpRunningTasks[0], mOrientationState);
+            }
+            runningTaskViewId = taskView.getTaskViewId();
             if (wasEmpty) {
                 addView(mClearAllButton);
             }
-            // The temporary running task is only used for the duration between the start of the
-            // gesture and the task list is loaded and applied
-            mTmpRunningTask = Task.from(new TaskKey(runningTaskInfo), runningTaskInfo, false);
-            taskView.bind(mTmpRunningTask, mOrientationState);
 
             // Measure and layout immediately so that the scroll values is updated instantly
             // as the user might be quick-switching
             measure(makeMeasureSpec(getMeasuredWidth(), EXACTLY),
                     makeMeasureSpec(getMeasuredHeight(), EXACTLY));
             layout(getLeft(), getTop(), getRight(), getBottom());
+        } else if (!needGroupTaskView && getTaskViewByTaskId(taskInfo.taskId) != null) {
+            runningTaskViewId = getTaskViewByTaskId(taskInfo.taskId).getTaskViewId();
         }
 
         boolean runningTaskTileHidden = mRunningTaskTileHidden;
-        int runningTaskId = runningTaskInfo == null ? -1 : runningTaskInfo.taskId;
-        setCurrentTask(runningTaskId);
-        if (mActivity.getDeviceProfile().isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
-            setFocusedTask(runningTaskId);
-        }
+        setCurrentTask(runningTaskViewId);
+        mFocusedTaskViewId = runningTaskViewId;
         setCurrentPage(getRunningTaskIndex());
         setRunningTaskViewShowScreenshot(false);
         setRunningTaskHidden(runningTaskTileHidden);
         // Update task size after setting current task.
         updateTaskSize();
+        updateChildTaskOrientations();
 
         // Reload the task list
         mTaskListChangeId = mModel.getTasks(this::applyLoadPlan);
@@ -1853,31 +2129,29 @@
     /**
      * Sets the running task id, cleaning up the old running task if necessary.
      */
-    public void setCurrentTask(int runningTaskId) {
-        if (mRunningTaskId == runningTaskId) {
+    public void setCurrentTask(int runningTaskViewId) {
+        Log.d(TASK_VIEW_ID_CRASH, "currentRunningTaskViewId: " + mRunningTaskViewId
+                + " requestedTaskViewId: " + runningTaskViewId);
+        if (mRunningTaskViewId == runningTaskViewId) {
             return;
         }
 
-        if (mRunningTaskId != -1) {
+        if (mRunningTaskViewId != -1) {
             // Reset the state on the old running task view
-            setRunningTaskIconScaledDown(false);
+            setTaskIconScaledDown(false);
             setRunningTaskViewShowScreenshot(true);
             setRunningTaskHidden(false);
         }
-        mRunningTaskId = runningTaskId;
+        mRunningTaskViewId = runningTaskViewId;
+    }
+
+    private int getTaskViewIdFromTaskId(int taskId) {
+        TaskView taskView = getTaskViewByTaskId(taskId);
+        return taskView != null ? taskView.getTaskViewId() : -1;
     }
 
     /**
-     * Sets the focused task id and store the width to height ratio of the focused task.
-     */
-    protected void setFocusedTask(int focusedTaskId) {
-        mFocusedTaskId = focusedTaskId;
-        mFocusedTaskRatio =
-                mLastComputedTaskSize.width() / (float) mLastComputedTaskSize.height();
-    }
-
-    /**
-     * Hides the tile associated with {@link #mRunningTaskId}
+     * Hides the tile associated with {@link #mRunningTaskViewId}
      */
     public void setRunningTaskHidden(boolean isHidden) {
         mRunningTaskTileHidden = isHidden;
@@ -1901,21 +2175,13 @@
         }
     }
 
-    public void setRunningTaskIconScaledDown(boolean isScaledDown) {
-        if (mRunningTaskIconScaledDown != isScaledDown) {
-            mRunningTaskIconScaledDown = isScaledDown;
-            applyRunningTaskIconScale();
-        }
-    }
-
-    public boolean isTaskIconScaledDown(TaskView taskView) {
-        return mRunningTaskIconScaledDown && getRunningTaskView() == taskView;
-    }
-
-    private void applyRunningTaskIconScale() {
-        TaskView firstTask = getRunningTaskView();
-        if (firstTask != null) {
-            firstTask.setIconScaleAndDim(mRunningTaskIconScaledDown ? 0 : 1);
+    public void setTaskIconScaledDown(boolean isScaledDown) {
+        if (mTaskIconScaledDown != isScaledDown) {
+            mTaskIconScaledDown = isScaledDown;
+            int taskCount = getTaskViewCount();
+            for (int i = 0; i < taskCount; i++) {
+                getTaskViewAt(i).setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
+            }
         }
     }
 
@@ -1926,65 +2192,63 @@
         anim.start();
     }
 
-    private void animateActionsViewOut() {
-        ObjectAnimator anim = ObjectAnimator.ofFloat(
-                mActionsView.getVisibilityAlpha(), MultiValueAlpha.VALUE, 1, 0);
-        anim.setDuration(TaskView.SCALE_ICON_DURATION);
-        anim.start();
-    }
-
-    public void animateUpRunningTaskIconScale() {
-        mRunningTaskIconScaledDown = false;
-        TaskView firstTask = getRunningTaskView();
-        if (firstTask != null) {
-            firstTask.setIconScaleAnimStartProgress(0f);
-            firstTask.animateIconScaleAndDimIntoView();
+    public void animateUpTaskIconScale() {
+        mTaskIconScaledDown = false;
+        int taskCount = getTaskViewCount();
+        for (int i = 0; i < taskCount; i++) {
+            TaskView taskView = getTaskViewAt(i);
+            taskView.setIconScaleAnimStartProgress(0f);
+            taskView.animateIconScaleAndDimIntoView();
         }
     }
 
-    /** Updates TaskView and ClearAllButtion scaling and translation required to turn into grid
+    /**
+     * Updates TaskView and ClearAllButtion scaling and translation required to turn into grid
      * layout.
      * This method is used when no task dismissal has occurred.
      */
     private void updateGridProperties() {
-        updateGridProperties(false);
+        updateGridProperties(false, Integer.MAX_VALUE);
+    }
+
+    /**
+     * Updates TaskView and ClearAllButtion scaling and translation required to turn into grid
+     * layout.
+     *
+     * This method is used when task dismissal has occurred, but rebalance is not needed.
+     *
+     * @param isTaskDismissal indicates if update was called due to task dismissal
+     */
+    private void updateGridProperties(boolean isTaskDismissal) {
+        updateGridProperties(isTaskDismissal, Integer.MAX_VALUE);
     }
 
     /**
      * Updates TaskView and ClearAllButton scaling and translation required to turn into grid
      * layout.
+     *
      * This method only calculates the potential position and depends on {@link #setGridProgress} to
      * apply the actual scaling and translation.
      *
-     * @param isTaskDismissal indicates if update was called due to task dismissal
+     * @param isTaskDismissal    indicates if update was called due to task dismissal
+     * @param startRebalanceAfter which view index to start rebalancing from. Use Integer.MAX_VALUE
+     *                           to skip rebalance
      */
-    private void updateGridProperties(boolean isTaskDismissal) {
+    private void updateGridProperties(boolean isTaskDismissal, int startRebalanceAfter) {
         int taskCount = getTaskViewCount();
         if (taskCount == 0) {
             return;
         }
 
-        final int boxLength = Math.max(mLastComputedGridTaskSize.width(),
-                mLastComputedGridTaskSize.height());
         int taskTopMargin = mActivity.getDeviceProfile().overviewTaskThumbnailTopMarginPx;
 
-        /*
-         * taskGridVerticalDiff is used to position the top of a task in the top row of the grid
-         * heightOffset is the vertical space one grid task takes + space between top and
-         *   bottom row
-         * Summed together they provide the top position for bottom row of grid tasks
-         */
-        final float taskGridVerticalDiff =
-                mLastComputedGridTaskSize.top - mLastComputedTaskSize.top;
-        final float heightOffset = (boxLength + taskTopMargin) + mRowSpacing;
-
         int topRowWidth = 0;
         int bottomRowWidth = 0;
         float topAccumulatedTranslationX = 0;
         float bottomAccumulatedTranslationX = 0;
 
         // Contains whether the child index is in top or bottom of grid (for non-focused task)
-        // Different from mTopRowIdSet, which contains the taskId of what task is in top row
+        // Different from mTopRowIdSet, which contains the taskViewId of what task is in top row
         IntSet topSet = new IntSet();
         IntSet bottomSet = new IntSet();
 
@@ -1997,6 +2261,8 @@
         int snappedTaskRowWidth = 0;
         int snappedPage = getNextPage();
         TaskView snappedTaskView = getTaskViewAtByAbsoluteIndex(snappedPage);
+        TaskView homeTaskView = getHomeTaskView();
+        TaskView nextFocusedTaskView = null;
 
         if (!isTaskDismissal) {
             mTopRowIdSet.clear();
@@ -2034,15 +2300,32 @@
                     // calculate the distance focused task need to shift.
                     focusedTaskShift += mIsRtl ? taskWidthAndSpacing : -taskWidthAndSpacing;
                 }
-                int taskId = taskView.getTask().key.id;
-                boolean isTopRow = isTaskDismissal ? mTopRowIdSet.contains(taskId)
-                        : topRowWidth <= bottomRowWidth;
-                if (isTopRow) {
-                    topRowWidth += taskWidthAndSpacing;
-                    topSet.add(i);
-                    mTopRowIdSet.add(taskId);
+                int taskViewId = taskView.getTaskViewId();
 
-                    taskView.setGridTranslationY(taskGridVerticalDiff);
+                // Rebalance the grid starting after a certain index
+                boolean isTopRow;
+                if (isTaskDismissal) {
+                    if (i > startRebalanceAfter) {
+                        mTopRowIdSet.remove(taskViewId);
+                        isTopRow = topRowWidth <= bottomRowWidth;
+                    } else {
+                        isTopRow = mTopRowIdSet.contains(taskViewId);
+                    }
+                } else {
+                    isTopRow = topRowWidth <= bottomRowWidth;
+                }
+
+                if (isTopRow) {
+                    if (homeTaskView != null && nextFocusedTaskView == null) {
+                        // TaskView will be focused when swipe up, don't count towards row width.
+                        nextFocusedTaskView = taskView;
+                    } else {
+                        topRowWidth += taskWidthAndSpacing;
+                    }
+                    topSet.add(i);
+                    mTopRowIdSet.add(taskViewId);
+
+                    taskView.setGridTranslationY(mTaskGridVerticalDiff);
 
                     // Move horizontally into empty space.
                     float widthOffset = 0;
@@ -2061,7 +2344,7 @@
                     bottomSet.add(i);
 
                     // Move into bottom row.
-                    taskView.setGridTranslationY(heightOffset + taskGridVerticalDiff);
+                    taskView.setGridTranslationY(mTopBottomRowHeightDiff + mTaskGridVerticalDiff);
 
                     // Move horizontally into empty space.
                     float widthOffset = 0;
@@ -2085,22 +2368,14 @@
         // We need to maintain snapped task's page scroll invariant between quick switch and
         // overview, so we sure snapped task's grid translation is 0, and add a non-fullscreen
         // translationX that is the same as snapped task's full scroll adjustment.
-        float snappedTaskFullscreenScrollAdjustment = 0;
+        float snappedTaskNonGridScrollAdjustment = 0;
         float snappedTaskGridTranslationX = 0;
         if (snappedTaskView != null) {
-            snappedTaskFullscreenScrollAdjustment = snappedTaskView.getScrollAdjustment(
+            snappedTaskNonGridScrollAdjustment = snappedTaskView.getScrollAdjustment(
                     /*fullscreenEnabled=*/true, /*gridEnabled=*/false);
             snappedTaskGridTranslationX = gridTranslations[snappedPage - mTaskViewStartIndex];
         }
 
-        for (int i = 0; i < taskCount; i++) {
-            TaskView taskView = getTaskViewAt(i);
-            taskView.setGridTranslationX(gridTranslations[i] - snappedTaskGridTranslationX);
-            taskView.getPrimaryNonFullscreenTranslationProperty().set(taskView,
-                    snappedTaskFullscreenScrollAdjustment);
-            taskView.getSecondaryNonFullscreenTranslationProperty().set(taskView, 0f);
-        }
-
         // Use the accumulated translation of the row containing the last task.
         float clearAllAccumulatedTranslation = topSet.contains(taskCount - 1)
                 ? topAccumulatedTranslationX : bottomAccumulatedTranslationX;
@@ -2133,7 +2408,7 @@
 
         float clearAllTotalTranslationX =
                 clearAllAccumulatedTranslation + clearAllShorterRowCompensation
-                        + clearAllShortTotalCompensation + snappedTaskFullscreenScrollAdjustment;
+                        + clearAllShortTotalCompensation + snappedTaskNonGridScrollAdjustment;
         if (focusedTaskIndex < taskCount) {
             // Shift by focused task's width and spacing if a task is focused.
             clearAllTotalTranslationX +=
@@ -2143,15 +2418,23 @@
         // Make sure there are enough space between snapped page and ClearAllButton, for the case
         // of swiping up after quick switch.
         if (snappedTaskView != null) {
-            int distanceFromClearAll = longRowWidth - snappedTaskRowWidth;
+            int distanceFromClearAll = longRowWidth - snappedTaskRowWidth + mPageSpacing;
+            // ClearAllButton should be off screen when snapped task is in its snapped position.
             int minimumDistance =
-                    mLastComputedGridSize.width() - snappedTaskView.getLayoutParams().width;
+                    mTaskWidth - snappedTaskView.getLayoutParams().width
+                            + (mLastComputedGridSize.width() - mTaskWidth) / 2;
             if (distanceFromClearAll < minimumDistance) {
                 int distanceDifference = minimumDistance - distanceFromClearAll;
-                clearAllTotalTranslationX += mIsRtl ? -distanceDifference : distanceDifference;
+                snappedTaskGridTranslationX += mIsRtl ? distanceDifference : -distanceDifference;
             }
         }
 
+        for (int i = 0; i < taskCount; i++) {
+            TaskView taskView = getTaskViewAt(i);
+            taskView.setGridTranslationX(gridTranslations[i] - snappedTaskGridTranslationX
+                    + snappedTaskNonGridScrollAdjustment);
+        }
+
         mClearAllButton.setGridTranslationPrimary(
                 clearAllTotalTranslationX - snappedTaskGridTranslationX);
         mClearAllButton.setGridScrollOffset(
@@ -2165,13 +2448,13 @@
         if (taskView1 == null || taskView2 == null) {
             return false;
         }
-        int taskId1 = taskView1.getTask().key.id;
-        int taskId2 = taskView2.getTask().key.id;
-        if (taskId1 == mFocusedTaskId || taskId2 == mFocusedTaskId) {
+        int taskViewId1 = taskView1.getTaskViewId();
+        int taskViewId2 = taskView2.getTaskViewId();
+        if (taskViewId1 == mFocusedTaskViewId || taskViewId2 == mFocusedTaskViewId) {
             return false;
         }
-        return (mTopRowIdSet.contains(taskId1) && mTopRowIdSet.contains(taskId2)) || (
-                !mTopRowIdSet.contains(taskId1) && !mTopRowIdSet.contains(taskId2));
+        return (mTopRowIdSet.contains(taskViewId1) && mTopRowIdSet.contains(taskViewId2)) || (
+                !mTopRowIdSet.contains(taskViewId1) && !mTopRowIdSet.contains(taskViewId2));
     }
 
     /**
@@ -2243,61 +2526,73 @@
             PendingAnimation anim) {
         // Use setFloat instead of setViewAlpha as we want to keep the view visible even when it's
         // alpha is set to 0 so that it can be recycled in the view pool properly
+        if (ENABLE_QUICKSTEP_LIVE_TILE.get() && taskView.isRunningTask()) {
+            runActionOnRemoteHandles(remoteTargetHandle -> {
+                TransformParams params = remoteTargetHandle.mTransformParams;
+                anim.setFloat(params, TransformParams.TARGET_ALPHA, 0,
+                        clampToProgress(ACCEL, 0, 0.5f));
+            });
+        }
         anim.setFloat(taskView, VIEW_ALPHA, 0, clampToProgress(ACCEL, 0, 0.5f));
-        SplitSelectStateController splitController = mSplitPlaceholderView.getSplitController();
+        FloatProperty<TaskView> secondaryViewTranslate =
+                taskView.getSecondaryDissmissTranslationProperty();
+        int secondaryTaskDimension = mOrientationHandler.getSecondaryDimension(taskView);
+        int verticalFactor = mOrientationHandler.getSecondaryTranslationDirectionFactor();
 
         ResourceProvider rp = DynamicResource.provider(mActivity);
         SpringProperty sp = new SpringProperty(SpringProperty.FLAG_CAN_SPRING_ON_START)
                 .setDampingRatio(rp.getFloat(R.dimen.dismiss_task_trans_y_damping_ratio))
                 .setStiffness(rp.getFloat(R.dimen.dismiss_task_trans_y_stiffness));
-        FloatProperty<TaskView> dismissingTaskViewTranslate =
-                taskView.getSecondaryDissmissTranslationProperty();
-        // TODO(b/186800707) translate entire grid size distance
-        int translateDistance = mOrientationHandler.getSecondaryDimension(taskView);
-        int positiveNegativeFactor = mOrientationHandler.getSecondaryTranslationDirectionFactor();
-        if (splitController.isSplitSelectActive()) {
-            // Have the task translate towards whatever side was just pinned
-            int dir = mOrientationHandler.getSplitTaskViewDismissDirection(splitController
-                    .getActiveSplitPositionOption(), mActivity.getDeviceProfile());
-            switch (dir) {
-                case PagedOrientationHandler.SPLIT_TRANSLATE_SECONDARY_NEGATIVE:
-                    dismissingTaskViewTranslate = taskView
-                            .getSecondaryDissmissTranslationProperty();
-                    positiveNegativeFactor = -1;
-                    break;
 
-                case PagedOrientationHandler.SPLIT_TRANSLATE_PRIMARY_POSITIVE:
-                    dismissingTaskViewTranslate = taskView.getPrimaryDismissTranslationProperty();
-                    positiveNegativeFactor = 1;
-                    break;
-
-                case PagedOrientationHandler.SPLIT_TRANSLATE_PRIMARY_NEGATIVE:
-                    dismissingTaskViewTranslate = taskView.getPrimaryDismissTranslationProperty();
-                    positiveNegativeFactor = -1;
-                    break;
-                default:
-                    throw new IllegalStateException("Invalid split task translation: " + dir);
-            }
-        }
-        // Double translation distance so dismissal drag is the full height, as we only animate
-        // the drag for the first half of the progress.
-        anim.add(ObjectAnimator.ofFloat(taskView, dismissingTaskViewTranslate,
-                positiveNegativeFactor * translateDistance * 2).setDuration(duration), LINEAR, sp);
+        anim.add(ObjectAnimator.ofFloat(taskView, secondaryViewTranslate,
+                verticalFactor * secondaryTaskDimension * 2).setDuration(duration), LINEAR, sp);
 
         if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mEnableDrawingLiveTile
                 && taskView.isRunningTask()) {
             anim.addOnFrameCallback(() -> {
-                mLiveTileTaskViewSimulator.taskSecondaryTranslation.value =
-                        mOrientationHandler.getSecondaryValue(
-                                taskView.getTranslationX(),
-                                taskView.getTranslationY());
+                runActionOnRemoteHandles(
+                        remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator
+                                .taskSecondaryTranslation.value = mOrientationHandler
+                                .getSecondaryValue(taskView.getTranslationX(),
+                                        taskView.getTranslationY()
+                                ));
                 redrawLiveTile();
             });
         }
     }
 
-    public PendingAnimation createTaskDismissAnimation(TaskView taskView, boolean animateTaskView,
-            boolean shouldRemoveTask, long duration) {
+    /**
+     * Places an {@link FloatingTaskView} on top of the thumbnail for {@link #mSplitHiddenTaskView}
+     * and then animates it into the split position that was desired
+     */
+    private void createInitialSplitSelectAnimation(PendingAnimation anim) {
+        float placeholderHeight = getResources().getDimension(R.dimen.split_placeholder_size);
+        mOrientationHandler.getInitialSplitPlaceholderBounds((int) placeholderHeight,
+                        mActivity.getDeviceProfile(),
+                mSplitSelectStateController.getActiveSplitPositionOption(), mTempRect);
+
+        RectF startingTaskRect = new RectF();
+        mSplitHiddenTaskView.setVisibility(INVISIBLE);
+        mFirstFloatingTaskView = FloatingTaskView.getFloatingTaskView(mActivity,
+                mSplitHiddenTaskView, startingTaskRect);
+        mFirstFloatingTaskView.setAlpha(1);
+        mFirstFloatingTaskView.addAnimation(anim, startingTaskRect,
+                mTempRect, mSplitHiddenTaskView, true /*fadeWithThumbnail*/);
+    }
+
+    /**
+     * Creates a {@link PendingAnimation} for dismissing the specified {@link TaskView}.
+     * @param dismissedTaskView the {@link TaskView} to be dismissed
+     * @param animateTaskView whether the {@link TaskView} to be dismissed should be animated
+     * @param shouldRemoveTask whether the associated {@link Task} should be removed from
+     *                         ActivityManager after dismissal
+     * @param duration duration of the animation
+     * @param dismissingForSplitSelection task dismiss animation is used for entering split
+     *                                    selection state from app icon
+     */
+    public PendingAnimation createTaskDismissAnimation(TaskView dismissedTaskView,
+            boolean animateTaskView, boolean shouldRemoveTask, long duration,
+            boolean dismissingForSplitSelection) {
         if (mPendingAnimation != null) {
             mPendingAnimation.createPlaybackController().dispatchOnCancel().dispatchOnEnd();
         }
@@ -2308,30 +2603,69 @@
             return anim;
         }
 
+        boolean showAsGrid = showAsGrid();
+        int taskCount = getTaskViewCount();
+        int dismissedIndex = indexOfChild(dismissedTaskView);
+        int dismissedTaskViewId = dismissedTaskView.getTaskViewId();
+
+        // Grid specific properties.
+        boolean isFocusedTaskDismissed = false;
+        TaskView nextFocusedTaskView = null;
+        boolean nextFocusedTaskFromTop = false;
+        float dismissedTaskWidth = 0;
+        float nextFocusedTaskWidth = 0;
+
+        // Non-grid specific properties.
         int[] oldScroll = new int[count];
         int[] newScroll = new int[count];
-        getPageScrolls(oldScroll, false, SIMPLE_SCROLL_LOGIC);
-        getPageScrolls(newScroll, false, (v) -> v.getVisibility() != GONE && v != taskView);
-        int taskCount = getTaskViewCount();
         int scrollDiffPerPage = 0;
-        if (count > 1) {
-            scrollDiffPerPage = Math.abs(oldScroll[1] - oldScroll[0]);
-        }
-        int draggedIndex = indexOfChild(taskView);
-
-        boolean isFocusedTaskDismissed = taskView.getTask().key.id == mFocusedTaskId;
-        if (isFocusedTaskDismissed && showAsGrid()) {
-            anim.setFloat(mActionsView, VIEW_ALPHA, 0, clampToProgress(ACCEL_0_5, 0, 0.5f));
-        }
-        float dismissedTaskWidth = taskView.getLayoutParams().width + mPageSpacing;
         boolean needsCurveUpdates = false;
+
+        if (showAsGrid) {
+            dismissedTaskWidth = dismissedTaskView.getLayoutParams().width + mPageSpacing;
+            isFocusedTaskDismissed = dismissedTaskViewId == mFocusedTaskViewId;
+            if (isFocusedTaskDismissed) {
+                nextFocusedTaskFromTop =
+                        mTopRowIdSet.size() > 0 && mTopRowIdSet.size() >= (taskCount - 1) / 2f;
+                // Pick the next focused task from the preferred row.
+                for (int i = 0; i < taskCount; i++) {
+                    TaskView taskView = getTaskViewAt(i);
+                    if (taskView == dismissedTaskView) {
+                        continue;
+                    }
+                    boolean isTopRow = mTopRowIdSet.contains(taskView.getTaskViewId());
+                    if ((nextFocusedTaskFromTop && isTopRow
+                            || (!nextFocusedTaskFromTop && !isTopRow))) {
+                        nextFocusedTaskView = taskView;
+                        break;
+                    }
+                }
+                if (nextFocusedTaskView != null) {
+                    nextFocusedTaskWidth =
+                            nextFocusedTaskView.getLayoutParams().width + mPageSpacing;
+                }
+            }
+        } else {
+            getPageScrolls(oldScroll, false, SIMPLE_SCROLL_LOGIC);
+            getPageScrolls(newScroll, false,
+                    v -> v.getVisibility() != GONE && v != dismissedTaskView);
+            if (count > 1) {
+                scrollDiffPerPage = Math.abs(oldScroll[1] - oldScroll[0]);
+            }
+        }
+
+        int distanceFromDismissedTask = 0;
         for (int i = 0; i < count; i++) {
             View child = getChildAt(i);
-            if (child == taskView) {
+            if (child == dismissedTaskView) {
                 if (animateTaskView) {
-                    addDismissedTaskAnimations(taskView, duration, anim);
+                    if (dismissingForSplitSelection) {
+                        createInitialSplitSelectAnimation(anim);
+                    } else {
+                        addDismissedTaskAnimations(dismissedTaskView, duration, anim);
+                    }
                 }
-            } else if (!showAsGrid()) {
+            } else if (!showAsGrid) {
                 // Compute scroll offsets from task dismissal for animation.
                 // If we just take newScroll - oldScroll, everything to the right of dragged task
                 // translates to the left. We need to offset this in some cases:
@@ -2340,15 +2674,15 @@
                 // - Current page is rightmost page (leftmost for RTL)
                 // - Dragging an adjacent page on the left side (right side for RTL)
                 int offset = mIsRtl ? scrollDiffPerPage : 0;
-                if (mCurrentPage == draggedIndex) {
+                if (mCurrentPage == dismissedIndex) {
                     int lastPage = taskCount - 1;
                     if (mCurrentPage == lastPage) {
                         offset += mIsRtl ? -scrollDiffPerPage : scrollDiffPerPage;
                     }
                 } else {
-                    // Dragging an adjacent page.
+                    // Dismissing an adjacent page.
                     int negativeAdjacent = mCurrentPage - 1; // (Right in RTL, left in LTR)
-                    if (draggedIndex == negativeAdjacent) {
+                    if (dismissedIndex == negativeAdjacent) {
                         offset += mIsRtl ? -scrollDiffPerPage : scrollDiffPerPage;
                     }
                 }
@@ -2361,7 +2695,7 @@
 
                     float additionalDismissDuration =
                             ADDITIONAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET * Math.abs(
-                                    i - draggedIndex);
+                                    i - dismissedIndex);
                     anim.setFloat(child, translationProperty, scrollDiff, clampToProgress(LINEAR,
                             Utilities.boundToRange(INITIAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET
                                     + additionalDismissDuration, 0f, 1f), 1));
@@ -2369,30 +2703,60 @@
                             && child instanceof TaskView
                             && ((TaskView) child).isRunningTask()) {
                         anim.addOnFrameCallback(() -> {
-                            mLiveTileTaskViewSimulator.taskPrimaryTranslation.value =
-                                    mOrientationHandler.getPrimaryValue(child.getTranslationX(),
-                                            child.getTranslationY());
+                            runActionOnRemoteHandles(
+                                    remoteTargetHandle ->
+                                            remoteTargetHandle.mTaskViewSimulator
+                                                    .taskPrimaryTranslation.value =
+                                                    mOrientationHandler.getPrimaryValue(
+                                                            child.getTranslationX(),
+                                                            child.getTranslationY()
+                                                    ));
                             redrawLiveTile();
                         });
                     }
                     needsCurveUpdates = true;
                 }
             } else if (child instanceof TaskView) {
+                TaskView taskView = (TaskView) child;
+                if (isFocusedTaskDismissed) {
+                    if (!isSameGridRow(taskView, nextFocusedTaskView)) {
+                        continue;
+                    }
+                } else {
+                    if (i < dismissedIndex || !isSameGridRow(taskView, dismissedTaskView)) {
+                        continue;
+                    }
+                }
                 // Animate task with index >= dismissed index and in the same row as the
-                // dismissed index, or if the dismissed task was the focused task. Offset
-                // successive task dismissal durations for a staggered effect.
-                if (isFocusedTaskDismissed || (i >= draggedIndex && isSameGridRow((TaskView) child,
-                        taskView))) {
-                    FloatProperty translationProperty =
-                            ((TaskView) child).getPrimaryDismissTranslationProperty();
-                    float additionalDismissDuration =
-                            ADDITIONAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET * Math.abs(
-                                    i - draggedIndex);
-                    anim.setFloat(child, translationProperty,
-                            !mIsRtl ? -dismissedTaskWidth : dismissedTaskWidth,
-                            clampToProgress(LINEAR, Utilities.boundToRange(
-                                    INITIAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET
-                                            + additionalDismissDuration, 0f, 1f), 1));
+                // dismissed index or next focused index. Offset successive task dismissal
+                // durations for a staggered effect.
+                float animationStartProgress = Utilities.boundToRange(
+                        INITIAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET
+                                + ADDITIONAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET
+                                * ++distanceFromDismissedTask, 0f, 1f);
+                if (taskView == nextFocusedTaskView) {
+                    // Enlarge the task to be focused next, and translate into focus position.
+                    float scale = mTaskWidth / (float) mLastComputedGridTaskSize.width();
+                    anim.setFloat(taskView, TaskView.SNAPSHOT_SCALE, scale,
+                            clampToProgress(LINEAR, animationStartProgress, 1f));
+                    anim.setFloat(taskView, taskView.getPrimaryDismissTranslationProperty(),
+                            mIsRtl ? dismissedTaskWidth : -dismissedTaskWidth,
+                            clampToProgress(LINEAR, animationStartProgress, 1f));
+                    float secondaryTranslation = -mTaskGridVerticalDiff;
+                    if (!nextFocusedTaskFromTop) {
+                        secondaryTranslation -= mTopBottomRowHeightDiff;
+                    }
+                    anim.setFloat(taskView, taskView.getSecondaryDissmissTranslationProperty(),
+                            secondaryTranslation,
+                            clampToProgress(LINEAR, animationStartProgress, 1f));
+                    anim.setFloat(taskView, TaskView.FOCUS_TRANSITION, 0f,
+                            clampToProgress(LINEAR, 0f, ANIMATION_DISMISS_PROGRESS_MIDPOINT));
+                } else {
+                    float primaryTranslation =
+                            isFocusedTaskDismissed ? nextFocusedTaskWidth : dismissedTaskWidth;
+                    anim.setFloat(taskView, taskView.getPrimaryDismissTranslationProperty(),
+                            mIsRtl ? primaryTranslation : -primaryTranslation,
+                            clampToProgress(LINEAR, animationStartProgress, 1f));
                 }
             }
         }
@@ -2403,15 +2767,16 @@
 
         // Add a tiny bit of translation Z, so that it draws on top of other views
         if (animateTaskView) {
-            taskView.setTranslationZ(0.1f);
+            dismissedTaskView.setTranslationZ(0.1f);
         }
 
         mPendingAnimation = anim;
+        final TaskView finalNextFocusedTaskView = nextFocusedTaskView;
         mPendingAnimation.addEndListener(new Consumer<Boolean>() {
             @Override
             public void accept(Boolean success) {
                 if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mEnableDrawingLiveTile
-                        && taskView.isRunningTask() && success) {
+                        && dismissedTaskView.isRunningTask() && success) {
                     finishRecentsAnimation(true /* toRecents */, false /* shouldPip */,
                             () -> onEnd(success));
                 } else {
@@ -2423,15 +2788,16 @@
             private void onEnd(boolean success) {
                 if (success) {
                     if (shouldRemoveTask) {
-                        if (taskView.getTask() != null) {
-                            if (ENABLE_QUICKSTEP_LIVE_TILE.get() && taskView.isRunningTask()) {
+                        if (dismissedTaskView.getTask() != null) {
+                            if (ENABLE_QUICKSTEP_LIVE_TILE.get()
+                                    && dismissedTaskView.isRunningTask()) {
                                 finishRecentsAnimation(true /* toRecents */, false /* shouldPip */,
-                                        () -> removeTaskInternal(taskView));
+                                        () -> removeTaskInternal(dismissedTaskViewId));
                             } else {
-                                removeTaskInternal(taskView);
+                                removeTaskInternal(dismissedTaskViewId);
                             }
                             mActivity.getStatsLogManager().logger()
-                                    .withItemInfo(taskView.getItemInfo())
+                                    .withItemInfo(dismissedTaskView.getItemInfo())
                                     .log(LAUNCHER_TASK_DISMISS_SWIPE_UP);
                         }
                     }
@@ -2441,32 +2807,70 @@
                     resetTaskVisuals();
 
                     int pageToSnapTo = mCurrentPage;
-                    // Snap to start if focused task was dismissed, as after quick switch it could
-                    // be at any page but the focused task always displays at the start.
-                    if (taskView.getTask().key.id == mFocusedTaskId) {
-                        pageToSnapTo = mTaskViewStartIndex;
-                    } else if (draggedIndex < pageToSnapTo || pageToSnapTo == (getTaskViewCount()
-                            - 1)) {
+                    if ((dismissedIndex < pageToSnapTo && !showAsGrid)
+                            || pageToSnapTo == taskCount - 1) {
                         pageToSnapTo -= 1;
                     }
-                    removeViewInLayout(taskView);
+                    if (showAsGrid) {
+                        int primaryScroll = mOrientationHandler.getPrimaryScroll(RecentsView.this);
+                        int currentPageScroll = getScrollForPage(pageToSnapTo);
+                        mCurrentPageScrollDiff = primaryScroll - currentPageScroll;
+                    }
+                    removeViewInLayout(dismissedTaskView);
+                    mTopRowIdSet.remove(dismissedTaskViewId);
 
-                    if (getTaskViewCount() == 0) {
+                    if (taskCount == 1) {
                         removeViewInLayout(mClearAllButton);
                         startHome();
                     } else {
-                        snapToPageImmediately(pageToSnapTo);
-                        dispatchScrollChanged();
-                        // Grid got messed up, reapply.
-                        updateGridProperties(true);
-                        if (showAsGrid() && getFocusedTaskView() == null
-                                && mActionsView.getVisibilityAlpha().getValue() == 1) {
-                            animateActionsViewOut();
+                        // Update focus task and its size.
+                        if (finalNextFocusedTaskView != null) {
+                            mFocusedTaskViewId = finalNextFocusedTaskView.getTaskViewId();
+                            mTopRowIdSet.remove(mFocusedTaskViewId);
+                            finalNextFocusedTaskView.animateIconScaleAndDimIntoView();
                         }
+                        updateTaskSize(/*isTaskDismissal=*/ true);
+                        updateChildTaskOrientations();
+                        // Update scroll and snap to page.
+                        updateScrollSynchronously();
+
+                        int highestVisibleTaskIndex = getHighestVisibleTaskIndex();
+                        if (highestVisibleTaskIndex < Integer.MAX_VALUE) {
+                            TaskView taskView = getTaskViewAt(highestVisibleTaskIndex);
+
+                            boolean shouldRebalance = false;
+                            int screenStart = mOrientationHandler.getPrimaryScroll(
+                                    RecentsView.this);
+                            int taskStart = mOrientationHandler.getChildStart(taskView)
+                                    + (int) taskView.getOffsetAdjustment(
+                                    /*fullscreenEnabled=*/ false,
+                                    /*gridEnabled=*/ true);
+
+                            // Rebalance only if there is a maximum gap between the task and the
+                            // screen's edge; this ensures that rebalanced tasks are outside the
+                            // visible screen.
+                            if (mIsRtl) {
+                                shouldRebalance = taskStart <= screenStart + mPageSpacing;
+                            } else {
+                                int screenEnd = screenStart + mOrientationHandler.getMeasuredSize(
+                                        RecentsView.this);
+                                int taskSize = (int) (mOrientationHandler.getMeasuredSize(taskView)
+                                        * taskView.getSizeAdjustment(/*fullscreenEnabled=*/ false));
+                                int taskEnd = taskStart + taskSize;
+
+                                shouldRebalance = taskEnd >= screenEnd - mPageSpacing;
+                            }
+
+                            if (shouldRebalance) {
+                                updateGridProperties(/*isTaskDismissal=*/ true,
+                                        highestVisibleTaskIndex);
+                                updateScrollSynchronously();
+                            }
+                        }
+
+                        setCurrentPage(pageToSnapTo);
+                        dispatchScrollChanged();
                     }
-                    // Update the layout synchronously so that the position of next view is
-                    // immediately available.
-                    onLayout(false /*  changed */, getLeft(), getTop(), getRight(), getBottom());
                 }
                 onDismissAnimationEnds();
                 mPendingAnimation = null;
@@ -2475,16 +2879,69 @@
         return anim;
     }
 
-    private void removeTaskInternal(TaskView taskView) {
-        UI_HELPER_EXECUTOR.getHandler().postDelayed(() ->
-                        ActivityManagerWrapper.getInstance().removeTask(
-                                taskView.getTask().key.id),
+    /**
+     * Returns all the tasks in the bottom row, without the focused task
+     */
+    private IntArray getBottomRowIdArray() {
+        IntArray bottomArray = new IntArray();
+        int taskViewCount = getTaskViewCount();
+        for (int i = 0; i < taskViewCount; i++) {
+            int taskViewId = getTaskViewAt(i).getTaskViewId();
+            if (!mTopRowIdSet.contains(taskViewId) && taskViewId != mFocusedTaskViewId) {
+                bottomArray.add(taskViewId);
+            }
+        }
+        return bottomArray;
+    }
+
+    /**
+     * Iterate the grid by columns instead of by TaskView index, starting after the focused task and
+     * up to the last balanced column.
+     *
+     * @return the highest visible TaskView index between both rows
+     */
+    private int getHighestVisibleTaskIndex() {
+        if (mTopRowIdSet.isEmpty()) return Integer.MAX_VALUE; // return earlier
+
+        int lastVisibleIndex = Integer.MAX_VALUE;
+        IntArray topRowIdArray = mTopRowIdSet.getArray();
+        IntArray bottomRowIdArray = getBottomRowIdArray();
+        int balancedColumns = Math.min(bottomRowIdArray.size(), topRowIdArray.size());
+
+        for (int i = 0; i < balancedColumns; i++) {
+            TaskView topTask = getTaskViewFromTaskViewId(topRowIdArray.get(i));
+
+            if (isTaskViewVisible(topTask)) {
+                TaskView bottomTask = getTaskViewFromTaskViewId(bottomRowIdArray.get(i));
+                lastVisibleIndex = Math.max(
+                        indexOfChild(topTask) - mTaskViewStartIndex,
+                        indexOfChild(bottomTask) - mTaskViewStartIndex
+                );
+            } else if (lastVisibleIndex < Integer.MAX_VALUE) {
+                break;
+            }
+        }
+
+        return lastVisibleIndex;
+    }
+
+    private void removeTaskInternal(int dismissedTaskViewId) {
+        int[] taskIds = getTaskIdsForTaskViewId(dismissedTaskViewId);
+        int primaryTaskId = taskIds[0];
+        int secondaryTaskId = taskIds[1];
+        UI_HELPER_EXECUTOR.getHandler().postDelayed(
+                () -> {
+                    ActivityManagerWrapper.getInstance().removeTask(primaryTaskId);
+                    if (secondaryTaskId != -1) {
+                        ActivityManagerWrapper.getInstance().removeTask(secondaryTaskId);
+                    }
+                },
                 REMOVE_TASK_WAIT_FOR_APP_STOP_MS);
     }
 
     /**
      * @return {@code true} if one of the task thumbnails would intersect/overlap with the
-     *         {@link #mSplitPlaceholderView}
+     *         {@link #mFirstFloatingTaskView}
      */
     public boolean shouldShiftThumbnailsForSplitSelect(@SplitConfigurationOptions.StagePosition
             int stagePosition) {
@@ -2509,7 +2966,8 @@
         int taskCount = getTaskViewCount();
         for (int i = 0; i < taskCount; i++) {
             TaskView taskView = getTaskViewAt(i);
-            if (taskView == mSplitHiddenTaskView && taskView != getFocusedTaskView()) {
+            if (taskView == mSplitHiddenTaskView
+                    && !(showAsGrid() && taskView == getFocusedTaskView())) {
                 // Case where the hidden task view would have overlapped w/ placeholder,
                 // but because it's going to hide we don't care
                 // TODO (b/187312247) edge case for thumbnails that are off screen but scroll on
@@ -2524,6 +2982,7 @@
     }
 
     protected void onDismissAnimationEnds() {
+        AccessibilityManagerCompat.sendDismissAnimationEndsEventToTest(getContext());
     }
 
     public PendingAnimation createAllTasksDismissAnimation(long duration) {
@@ -2576,7 +3035,7 @@
 
     @UiThread
     private void dismissTask(int taskId) {
-        TaskView taskView = getTaskView(taskId);
+        TaskView taskView = getTaskViewByTaskId(taskId);
         if (taskView == null) {
             return;
         }
@@ -2585,7 +3044,7 @@
 
     public void dismissTask(TaskView taskView, boolean animateTaskView, boolean removeTask) {
         runDismissAnimation(createTaskDismissAnimation(taskView, animateTaskView, removeTask,
-                DISMISS_TASK_DURATION));
+                DISMISS_TASK_DURATION, false /* dismissingForSplitSelection*/));
     }
 
     @SuppressWarnings("unused")
@@ -2655,9 +3114,12 @@
         }
         alpha = Utilities.boundToRange(alpha, 0, 1);
         mContentAlpha = alpha;
+        int runningTaskId = getTaskIdsForRunningTaskView()[0];
         for (int i = getTaskViewCount() - 1; i >= 0; i--) {
             TaskView child = getTaskViewAt(i);
-            if (!mRunningTaskTileHidden || child.getTask().key.id != mRunningTaskId) {
+            int[] childTaskIds = child.getTaskIds();
+            if (!mRunningTaskTileHidden ||
+                    (childTaskIds[0] != runningTaskId && childTaskIds[1] != runningTaskId)) {
                 child.setStableAlpha(alpha);
             }
         }
@@ -2786,6 +3248,12 @@
 
     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        // If we're going to HOME, avoid unnecessary onLayout that cause TaskViews to re-arrange
+        // during animation to HOME.
+        if (mCurrentGestureEndTarget == GestureState.GestureEndTarget.HOME) {
+            return;
+        }
+
         super.onLayout(changed, left, top, right, bottom);
 
         updateEmptyStateUi(changed);
@@ -2800,6 +3268,9 @@
         mLastComputedTaskStartPushOutDistance = null;
         mLastComputedTaskEndPushOutDistance = null;
         updatePageOffsets();
+        runActionOnRemoteHandles(
+                remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator
+                        .setScroll(getScrollOffset()));
         setImportantForAccessibility(isModal() ? IMPORTANT_FOR_ACCESSIBILITY_NO
                 : IMPORTANT_FOR_ACCESSIBILITY_AUTO);
     }
@@ -2809,8 +3280,8 @@
         float modalOffset = ACCEL_0_75.getInterpolation(mTaskModalness);
         int count = getChildCount();
 
-        TaskView runningTask = mRunningTaskId == -1 || !mRunningTaskTileHidden
-                ? null : getTaskView(mRunningTaskId);
+        TaskView runningTask = mRunningTaskViewId == -1 || !mRunningTaskTileHidden
+                ? null : getRunningTaskView();
         int midpoint = runningTask == null ? -1 : indexOfChild(runningTask);
         int modalMidpoint = getCurrentPage();
 
@@ -2863,7 +3334,9 @@
             translationProperty.set(child, totalTranslation);
             if (ENABLE_QUICKSTEP_LIVE_TILE.get() && mEnableDrawingLiveTile
                     && i == getRunningTaskIndex()) {
-                mLiveTileTaskViewSimulator.taskPrimaryTranslation.value = totalTranslation;
+                runActionOnRemoteHandles(
+                        remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator
+                                .taskPrimaryTranslation.value = totalTranslation);
                 redrawLiveTile();
             }
         }
@@ -2882,6 +3355,12 @@
             outRect.offset(taskView.getPersistentTranslationX(),
                     taskView.getPersistentTranslationY());
             outRect.top += mActivity.getDeviceProfile().overviewTaskThumbnailTopMarginPx;
+
+            mTempMatrix.reset();
+            float persistentScale = taskView.getPersistentScale();
+            mTempMatrix.postScale(persistentScale, persistentScale,
+                    mIsRtl ? outRect.right : outRect.left, outRect.top);
+            mTempMatrix.mapRect(outRect);
         }
         outRect.offset(mOrientationHandler.getPrimaryValue(-midPointScroll, 0),
                 mOrientationHandler.getSecondaryValue(-midPointScroll, 0));
@@ -2960,7 +3439,9 @@
             TaskView task = getTaskViewAt(i);
             task.getTaskResistanceTranslationProperty().set(task, translation / getScaleY());
         }
-        mLiveTileTaskViewSimulator.recentsViewSecondaryTranslation.value = translation;
+        runActionOnRemoteHandles(
+                remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator
+                        .recentsViewSecondaryTranslation.value = translation);
     }
 
     protected void setTaskViewsPrimarySplitTranslation(float translation) {
@@ -2974,8 +3455,11 @@
     protected void setTaskViewsSecondarySplitTranslation(float translation) {
         mTaskViewsSecondarySplitTranslation = translation;
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView task = getTaskViewAt(i);
-            task.getSecondarySplitTranslationProperty().set(task, translation);
+            TaskView taskView = getTaskViewAt(i);
+            if (taskView == mSplitHiddenTaskView) {
+                continue;
+            }
+            taskView.getSecondarySplitTranslationProperty().set(taskView, translation);
         }
     }
 
@@ -2991,30 +3475,60 @@
 
     public void initiateSplitSelect(TaskView taskView, SplitPositionOption splitPositionOption) {
         mSplitHiddenTaskView = taskView;
-        SplitSelectStateController splitController = mSplitPlaceholderView.getSplitController();
         Rect initialBounds = new Rect(taskView.getLeft(), taskView.getTop(), taskView.getRight(),
                 taskView.getBottom());
-        splitController.setInitialTaskSelect(taskView, splitPositionOption, initialBounds);
+        mSplitSelectStateController.setInitialTaskSelect(taskView,
+                splitPositionOption, initialBounds);
         mSplitHiddenTaskViewIndex = indexOfChild(taskView);
-        mSplitPlaceholderView.setLayoutParams(
-                splitController.getLayoutParamsForActivePosition(getResources(),
-                        mActivity.getDeviceProfile()));
-        mSplitPlaceholderView.setIcon(taskView.getIconView());
+        if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
+            finishRecentsAnimation(true, null);
+        }
     }
 
     public PendingAnimation createSplitSelectInitAnimation() {
         int duration = mActivity.getStateManager().getState().getTransitionDuration(getContext());
-        return createTaskDismissAnimation(mSplitHiddenTaskView, true, false, duration);
+        return createTaskDismissAnimation(mSplitHiddenTaskView, true, false, duration,
+                true /* dismissingForSplitSelection*/);
     }
 
     public void confirmSplitSelect(TaskView taskView) {
-        mSplitPlaceholderView.getSplitController().setSecondTaskId(taskView);
-        resetTaskVisuals();
-        setTranslationY(0);
+        RectF secondTaskStartingBounds = new RectF();
+        Rect secondTaskEndingBounds = new Rect();
+        // TODO(194414938) starting bounds seem slightly off, investigate
+        Rect firstTaskStartingBounds = new Rect();
+        Rect firstTaskEndingBounds = mTempRect;
+        int duration = mActivity.getStateManager().getState().getTransitionDuration(getContext());
+        PendingAnimation pendingAnimation = new PendingAnimation(duration);
+
+        int halfDividerSize = getResources()
+                .getDimensionPixelSize(R.dimen.multi_window_task_divider_size) / 2;
+        mOrientationHandler.getFinalSplitPlaceholderBounds(halfDividerSize,
+                mActivity.getDeviceProfile(),
+                mSplitSelectStateController.getActiveSplitPositionOption(), firstTaskEndingBounds,
+                secondTaskEndingBounds);
+
+        mFirstFloatingTaskView.getBoundsOnScreen(firstTaskStartingBounds);
+        mFirstFloatingTaskView.addAnimation(pendingAnimation,
+                new RectF(firstTaskStartingBounds), firstTaskEndingBounds, mFirstFloatingTaskView,
+                false /*fadeWithThumbnail*/);
+
+        mSecondFloatingTaskView = FloatingTaskView.getFloatingTaskView(mActivity,
+                taskView, secondTaskStartingBounds);
+        mSecondFloatingTaskView.setAlpha(1);
+        mSecondFloatingTaskView.addAnimation(pendingAnimation, secondTaskStartingBounds,
+                secondTaskEndingBounds, taskView.getThumbnail(),
+                true /*fadeWithThumbnail*/);
+        pendingAnimation.addEndListener(aBoolean -> {
+            mSplitSelectStateController.setSecondTaskId(taskView);
+            resetFromSplitSelectionState();
+        });
+        mSecondSplitHiddenTaskView = taskView;
+        taskView.setVisibility(INVISIBLE);
+        pendingAnimation.buildAnim().start();
     }
 
     public PendingAnimation cancelSplitSelect(boolean animate) {
-        SplitSelectStateController splitController = mSplitPlaceholderView.getSplitController();
+        SplitSelectStateController splitController = mSplitSelectStateController;
         SplitPositionOption splitOption = splitController.getActiveSplitPositionOption();
         Rect initialBounds = splitController.getInitialBounds();
         splitController.resetState();
@@ -3127,8 +3641,19 @@
         }
         onLayout(false /*  changed */, getLeft(), getTop(), getRight(), getBottom());
         resetTaskVisuals();
+        mSplitHiddenTaskView.setVisibility(VISIBLE);
         mSplitHiddenTaskView = null;
         mSplitHiddenTaskViewIndex = -1;
+        if (mFirstFloatingTaskView != null) {
+            mActivity.getRootView().removeView(mFirstFloatingTaskView);
+            mFirstFloatingTaskView = null;
+        }
+        if (mSecondFloatingTaskView != null) {
+            mActivity.getRootView().removeView(mSecondFloatingTaskView);
+            mSecondFloatingTaskView = null;
+            mSecondSplitHiddenTaskView.setVisibility(VISIBLE);
+            mSecondSplitHiddenTaskView = null;
+        }
     }
 
     private void updateDeadZoneRects() {
@@ -3223,10 +3748,12 @@
             int runningTaskIndex = recentsView.getRunningTaskIndex();
             if (ENABLE_QUICKSTEP_LIVE_TILE.get() && runningTaskIndex != -1
                     && runningTaskIndex != taskIndex) {
-                anim.play(ObjectAnimator.ofFloat(
-                        recentsView.getLiveTileTaskViewSimulator().taskPrimaryTranslation,
-                        AnimatedFloat.VALUE,
-                        primaryTranslation));
+                for (RemoteTargetHandle remoteHandle : recentsView.getRemoteTargetHandles()) {
+                    anim.play(ObjectAnimator.ofFloat(
+                            remoteHandle.mTaskViewSimulator.taskPrimaryTranslation,
+                            AnimatedFloat.VALUE,
+                            primaryTranslation));
+                }
             }
 
             int otherAdjacentTaskIndex = centerTaskIndex + (centerTaskIndex - taskIndex);
@@ -3306,7 +3833,9 @@
         mPendingAnimation = new PendingAnimation(duration);
         mPendingAnimation.add(anim);
         if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
-            mLiveTileTaskViewSimulator.addOverviewToAppAnim(mPendingAnimation, interpolator);
+            runActionOnRemoteHandles(
+                    remoteTargetHandle -> remoteTargetHandle.mTaskViewSimulator
+                            .addOverviewToAppAnim(mPendingAnimation, interpolator));
             mPendingAnimation.addOnFrameCallback(this::redrawLiveTile);
         }
         mPendingAnimation.addEndListener(isSuccess -> {
@@ -3397,31 +3926,87 @@
     }
 
     public void redrawLiveTile() {
-        if (mLiveTileParams.getTargetSet() != null) {
-            mLiveTileTaskViewSimulator.apply(mLiveTileParams);
-        }
+        runActionOnRemoteHandles(remoteTargetHandle -> {
+            TransformParams params = remoteTargetHandle.mTransformParams;
+            if (params.getTargetSet() != null) {
+                remoteTargetHandle.mTaskViewSimulator.apply(params);
+            }
+        });
     }
 
-    public TaskViewSimulator getLiveTileTaskViewSimulator() {
-        return mLiveTileTaskViewSimulator;
-    }
-
-    public TransformParams getLiveTileParams() {
-        return mLiveTileParams;
+    public RemoteTargetHandle[] getRemoteTargetHandles() {
+        return mRemoteTargetHandles;
     }
 
     // TODO: To be removed in a follow up CL
     public void setRecentsAnimationTargets(RecentsAnimationController recentsAnimationController,
             RecentsAnimationTargets recentsAnimationTargets) {
         mRecentsAnimationController = recentsAnimationController;
-        if (recentsAnimationTargets != null && recentsAnimationTargets.apps.length > 0) {
-            if (mSyncTransactionApplier != null) {
-                recentsAnimationTargets.addReleaseCheck(mSyncTransactionApplier);
-            }
-            mLiveTileTaskViewSimulator.setPreview(
-                    recentsAnimationTargets.apps[recentsAnimationTargets.apps.length - 1]);
-            mLiveTileParams.setTargetSet(recentsAnimationTargets);
+        if (recentsAnimationTargets == null || recentsAnimationTargets.apps.length == 0) {
+            return;
         }
+
+        if (mSyncTransactionApplier != null) {
+            recentsAnimationTargets.addReleaseCheck(mSyncTransactionApplier);
+        }
+
+        // TODO Consolidate this shared code with SwipeUpAnimationLogic (or mabe just reuse
+        //  what that class has and pass it into here
+        mRemoteTargetHandles = new RemoteTargetHandle[recentsAnimationTargets.apps.length];
+        TaskViewSimulator primaryTvs = createTaskViewSimulator();
+        mRemoteTargetHandles[0] = new RemoteTargetHandle(primaryTvs, new TransformParams());
+        if (recentsAnimationTargets.apps.length == 1) {
+            mRemoteTargetHandles[0].mTaskViewSimulator
+                    .setPreview(recentsAnimationTargets.apps[0], null);
+            mRemoteTargetHandles[0].mTransformParams.setTargetSet(recentsAnimationTargets);
+        } else {
+            TaskViewSimulator secondaryTvs = createTaskViewSimulator();
+            secondaryTvs.setOrientationState(mOrientationState);
+            secondaryTvs.recentsViewScale.value = 1;
+
+            mRemoteTargetHandles[1] = new RemoteTargetHandle(secondaryTvs, new TransformParams());
+            RemoteAnimationTargetCompat dividerTarget =
+                    recentsAnimationTargets.getNonAppTargetOfType(TYPE_DOCK_DIVIDER);
+            RemoteAnimationTargetCompat primaryTaskTarget = recentsAnimationTargets.apps[0];
+            RemoteAnimationTargetCompat secondaryTaskTarget = recentsAnimationTargets.apps[1];
+            SplitConfigurationOptions.StagedSplitBounds
+                    info = new SplitConfigurationOptions.StagedSplitBounds(
+                    primaryTaskTarget.screenSpaceBounds,
+                    secondaryTaskTarget.screenSpaceBounds, dividerTarget.screenSpaceBounds);
+            mRemoteTargetHandles[0].mTaskViewSimulator.setPreview(primaryTaskTarget, info);
+            mRemoteTargetHandles[1].mTaskViewSimulator.setPreview(secondaryTaskTarget, info);
+            RemoteAnimationTargets rats = new RemoteAnimationTargets(
+                    new RemoteAnimationTargetCompat[]{primaryTaskTarget},
+                    recentsAnimationTargets.wallpapers, recentsAnimationTargets.nonApps,
+                    MODE_CLOSING
+            );
+            RemoteAnimationTargets splitRats = new RemoteAnimationTargets(
+                    new RemoteAnimationTargetCompat[]{secondaryTaskTarget},
+                    recentsAnimationTargets.wallpapers, recentsAnimationTargets.nonApps,
+                    MODE_CLOSING
+            );
+            mRemoteTargetHandles[0].mTransformParams.setTargetSet(rats);
+            mRemoteTargetHandles[1].mTransformParams.setTargetSet(splitRats);
+        }
+    }
+
+    /** Helper to avoid writing some for-loops to iterate over {@link #mRemoteTargetHandles} */
+    private void runActionOnRemoteHandles(Consumer<RemoteTargetHandle> consumer) {
+        if (mRemoteTargetHandles == null) {
+            return;
+        }
+
+        for (RemoteTargetHandle handle : mRemoteTargetHandles) {
+            consumer.accept(handle);
+        }
+    }
+
+    private TaskViewSimulator createTaskViewSimulator() {
+        TaskViewSimulator tvs = new TaskViewSimulator(getContext(), getSizeStrategy());
+        tvs.setOrientationState(mOrientationState);
+        tvs.setDp(mActivity.getDeviceProfile());
+        tvs.recentsViewScale.value = 1;
+        return tvs;
     }
 
     public void finishRecentsAnimation(boolean toRecents, Runnable onFinishComplete) {
@@ -3487,9 +4072,13 @@
     }
 
     /**
-     * Updates page scroll synchronously and layout child views.
+     * Updates page scroll synchronously after measure and layout child views.
      */
     public void updateScrollSynchronously() {
+        // onMeasure is needed to update child's measured width which is used in scroll calculation,
+        // in case TaskView sizes has changed when being focused/unfocused.
+        onMeasure(makeMeasureSpec(getMeasuredWidth(), EXACTLY),
+                makeMeasureSpec(getMeasuredHeight(), EXACTLY));
         onLayout(false /*  changed */, getLeft(), getTop(), getRight(), getBottom());
         updateMinAndMaxScrollX();
     }
@@ -3552,18 +4141,28 @@
         }
 
         boolean pageScrollChanged = false;
-        final int childCount = getChildCount();
-        for (int i = 0; i < childCount; i++) {
-            View child = getChildAt(i);
-            float scrollDiff = 0;
-            if (child instanceof TaskView) {
-                scrollDiff = ((TaskView) child).getScrollAdjustment(showAsFullscreen, showAsGrid);
-            } else if (child instanceof ClearAllButton) {
-                scrollDiff = ((ClearAllButton) child).getScrollAdjustment(showAsFullscreen,
-                        showAsGrid);
-            }
 
-            final int pageScroll = newPageScrolls[i] + (int) scrollDiff;
+        int clearAllIndex = indexOfChild(mClearAllButton);
+        int clearAllScroll = 0;
+        int clearAllWidth = mOrientationHandler.getPrimarySize(mClearAllButton);
+        if (clearAllIndex != -1 && clearAllIndex < outPageScrolls.length) {
+            float scrollDiff = mClearAllButton.getScrollAdjustment(showAsFullscreen, showAsGrid);
+            clearAllScroll = newPageScrolls[clearAllIndex] + (int) scrollDiff;
+            if (outPageScrolls[clearAllIndex] != clearAllScroll) {
+                pageScrollChanged = true;
+                outPageScrolls[clearAllIndex] = clearAllScroll;
+            }
+        }
+
+        final int taskCount = getTaskViewCount();
+        for (int i = 0; i < taskCount; i++) {
+            TaskView taskView = getTaskViewAt(i);
+            float scrollDiff = taskView.getScrollAdjustment(showAsFullscreen, showAsGrid);
+            int pageScroll = newPageScrolls[i + mTaskViewStartIndex] + (int) scrollDiff;
+            if ((mIsRtl && pageScroll < clearAllScroll + clearAllWidth)
+                    || (!mIsRtl && pageScroll > clearAllScroll - clearAllWidth)) {
+                pageScroll = clearAllScroll + (mIsRtl ? clearAllWidth : -clearAllWidth);
+            }
             if (outPageScrolls[i] != pageScroll) {
                 pageScrollChanged = true;
                 outPageScrolls[i] = pageScroll;
@@ -3687,6 +4286,7 @@
     public void setOverviewGridEnabled(boolean overviewGridEnabled) {
         if (mOverviewGridEnabled != overviewGridEnabled) {
             mOverviewGridEnabled = overviewGridEnabled;
+            updateActionsViewScrollAlpha();
             // Request layout to ensure scroll position is recalculated with updated mGridProgress.
             requestLayout();
         }
@@ -3712,13 +4312,42 @@
             }
             return;
         }
-        switchToScreenshot(mRunningTaskId == -1 ? null
-                : mRecentsAnimationController.screenshotTask(mRunningTaskId), onFinishRunnable);
+
+        switchToScreenshotInternal(onFinishRunnable);
+    }
+
+    private void switchToScreenshotInternal(Runnable onFinishRunnable) {
+        TaskView taskView = getRunningTaskView();
+        if (taskView == null) {
+            onFinishRunnable.run();
+            return;
+        }
+
+        taskView.setShowScreenshot(true);
+        for (TaskView.TaskIdAttributeContainer container :
+                taskView.getTaskIdAttributeContainers()) {
+            if (container == null) {
+                continue;
+            }
+
+            ThumbnailData td =
+                    mRecentsAnimationController.screenshotTask(container.getTask().key.id);
+            TaskThumbnailView thumbnailView = container.getThumbnailView();
+            if (td != null) {
+                thumbnailView.setThumbnail(container.getTask(), td);
+            } else {
+                thumbnailView.refresh();
+            }
+        }
+        ViewUtils.postFrameDrawn(taskView, onFinishRunnable);
     }
 
     /**
      * Switch the current running task view to static snapshot mode, using the
      * provided thumbnail data as the snapshot.
+     * TODO(b/195609063) Consolidate this method w/ the one above, except this thumbnail data comes
+     *  from gesture state, which is a larger change of it having to keep track of multiple tasks.
+     *  OR. Maybe it doesn't need to pass in a thumbnail and we can use the exact same flow as above
      */
     public void switchToScreenshot(ThumbnailData thumbnailData, Runnable onFinishRunnable) {
         TaskView taskView = getRunningTaskView();
@@ -3749,7 +4378,6 @@
         boolean inPlaceLandscape = !mOrientationState.canRecentsActivityRotate()
                 && mOrientationState.getTouchRotation() != ROTATION_0;
         mActionsView.updateHiddenFlags(HIDDEN_NON_ZERO_ROTATION, modalness < 1 && inPlaceLandscape);
-        mActionsView.setTaskModalness(modalness);
     }
 
     @Nullable
@@ -3832,11 +4460,6 @@
                 && mCurrentGestureEndTarget != GestureState.GestureEndTarget.RECENTS;
     }
 
-    public boolean shouldShowOverviewActionsForState(STATE_TYPE state) {
-        return !state.displayOverviewTasksAsGrid(mActivity.getDeviceProfile())
-                || getFocusedTaskView() != null;
-    }
-
     /**
      * Used to register callbacks for when our empty message state changes.
      *
@@ -3877,7 +4500,8 @@
     }
 
     private void dispatchScrollChanged() {
-        mLiveTileTaskViewSimulator.setScroll(getScrollOffset());
+        runActionOnRemoteHandles(remoteTargetHandle ->
+                remoteTargetHandle.mTaskViewSimulator.setScroll(getScrollOffset()));
         for (int i = mScrollListeners.size() - 1; i >= 0; i--) {
             mScrollListeners.get(i).onScrollChanged();
         }
@@ -3939,4 +4563,8 @@
         // Set locus context is a binder call, don't want it to happen during a transition
         UI_HELPER_EXECUTOR.post(() -> mActivity.setLocusContext(id, Bundle.EMPTY));
     }
+
+    public interface TaskLaunchListener {
+        void onTaskLaunched();
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/views/SplitPlaceholderView.java b/quickstep/src/com/android/quickstep/views/SplitPlaceholderView.java
index bb8bc11..a712d1a 100644
--- a/quickstep/src/com/android/quickstep/views/SplitPlaceholderView.java
+++ b/quickstep/src/com/android/quickstep/views/SplitPlaceholderView.java
@@ -22,6 +22,8 @@
 import android.view.Gravity;
 import android.widget.FrameLayout;
 
+import androidx.annotation.Nullable;
+
 import com.android.quickstep.util.SplitSelectStateController;
 
 public class SplitPlaceholderView extends FrameLayout {
@@ -55,6 +57,11 @@
         return mSplitController;
     }
 
+    @Nullable
+    public IconView getIcon() {
+        return mIcon;
+    }
+
     public void setIcon(IconView icon) {
         if (mIcon == null) {
             mIcon = new IconView(getContext());
diff --git a/quickstep/src/com/android/quickstep/views/TaskMenuView.java b/quickstep/src/com/android/quickstep/views/TaskMenuView.java
index 906e854..bfc7eea 100644
--- a/quickstep/src/com/android/quickstep/views/TaskMenuView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskMenuView.java
@@ -16,7 +16,6 @@
 
 package com.android.quickstep.views;
 
-import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
 import static com.android.quickstep.views.TaskThumbnailView.DIM_ALPHA;
 
 import android.animation.Animator;
@@ -44,7 +43,6 @@
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.anim.RoundedRectRevealOutlineProvider;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.views.BaseDragLayer;
@@ -139,7 +137,7 @@
         // NOTE: Changing the pivots means the rotated view gets rotated about the new pivots set,
         // which would render the X and Y position set here incorrect
         setPivotX(0);
-        if (mActivity.getDeviceProfile().isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
+        if (mActivity.getDeviceProfile().overviewShowAsGrid) {
             // In tablet, set pivotY to original position without mThumbnailTopMargin adjustment.
             setPivotY(-taskTopMargin);
         } else {
@@ -221,17 +219,7 @@
                 menuOptionView, mActivity.getDeviceProfile());
         menuOptionView.setEnabled(menuOption.isEnabled());
         menuOptionView.setAlpha(menuOption.isEnabled() ? 1 : 0.5f);
-        menuOptionView.setOnClickListener(view -> {
-            if (ENABLE_QUICKSTEP_LIVE_TILE.get() && !menuOption.hasFinishRecentsInAction()) {
-                RecentsView recentsView = mTaskView.getRecentsView();
-                recentsView.switchToScreenshot(null,
-                        () -> recentsView.finishRecentsAnimation(true /* toRecents */,
-                                false /* shouldPip */,
-                                () -> menuOption.onClick(view)));
-            } else {
-                menuOption.onClick(view);
-            }
-        });
+        menuOptionView.setOnClickListener(menuOption::onClick);
         mOptionLayout.addView(menuOptionView);
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
index c70596d..0577cce 100644
--- a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
@@ -19,7 +19,6 @@
 import static android.view.WindowInsetsController.APPEARANCE_LIGHT_NAVIGATION_BARS;
 import static android.view.WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS;
 
-import static com.android.launcher3.Utilities.comp;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
 import static com.android.systemui.shared.system.WindowManagerWrapper.WINDOWING_MODE_FULLSCREEN;
 
@@ -32,8 +31,6 @@
 import android.graphics.Insets;
 import android.graphics.Matrix;
 import android.graphics.Paint;
-import android.graphics.PorterDuff;
-import android.graphics.PorterDuffXfermode;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.Shader;
@@ -50,7 +47,6 @@
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.SystemUiController;
@@ -85,7 +81,6 @@
     private TaskOverlay mOverlay;
     private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
     private final Paint mBackgroundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
-    private final Paint mClearPaint = new Paint();
     private final Paint mDimmingPaintAfterClearing = new Paint();
     private final int mDimColor;
 
@@ -116,7 +111,6 @@
         super(context, attrs, defStyleAttr);
         mPaint.setFilterBitmap(true);
         mBackgroundPaint.setColor(Color.WHITE);
-        mClearPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
         mActivity = BaseActivity.fromContext(context);
         // Initialize with placeholder value. It is overridden later by TaskView
         mFullscreenParams = TEMP_PARAMS.get(context);
@@ -168,6 +162,9 @@
             mBitmapShader = new BitmapShader(bm, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
             mPaint.setShader(mBitmapShader);
             updateThumbnailMatrix();
+            if (mOverlayEnabled) {
+                getTaskOverlay().refreshActionVisibility(mThumbnailData);
+            }
         } else {
             mBitmapShader = null;
             mThumbnailData = null;
@@ -214,7 +211,7 @@
             return Insets.NONE;
         }
 
-        if (!TaskView.CLIP_STATUS_AND_NAV_BARS) {
+        if (!TaskView.clipStatusAndNavBars(mActivity.getDeviceProfile())) {
             return Insets.NONE;
         }
 
@@ -309,17 +306,7 @@
             float cornerRadius) {
         if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
             if (mTask != null && getTaskView().isRunningTask() && !getTaskView().showScreenshot()) {
-                // TODO(b/189265196): Temporary fix to align the surface with the cutout perfectly.
-                // Round up only when the live tile task is displayed in Overview.
-                float rounding = comp(mFullscreenParams.mFullscreenProgress);
-                float left = x + rounding / 2;
-                float top = y + rounding / 2;
-                float right = width - rounding;
-                float bottom = height - rounding;
-
-                canvas.drawRoundRect(left, top, right, bottom, cornerRadius, cornerRadius,
-                        mClearPaint);
-                canvas.drawRoundRect(left, top, right, bottom, cornerRadius, cornerRadius,
+                canvas.drawRoundRect(x, y, width, height, cornerRadius, cornerRadius,
                         mDimmingPaintAfterClearing);
                 return;
             }
@@ -431,7 +418,9 @@
      */
     public static class PreviewPositionHelper {
 
-        // Contains the portion of the thumbnail that is clipped when fullscreen progress = 0.
+        private static final RectF EMPTY_RECT_F = new RectF();
+
+        // Contains the portion of the thumbnail that is unclipped when fullscreen progress = 1.
         private final RectF mClippedInsets = new RectF();
         private final Matrix mMatrix = new Matrix();
         private boolean mIsOrientationChanged;
@@ -451,7 +440,7 @@
 
             int thumbnailRotation = thumbnailData.rotation;
             int deltaRotate = getRotationDelta(currentRotation, thumbnailRotation);
-            RectF thumbnailClipHint = TaskView.CLIP_STATUS_AND_NAV_BARS
+            RectF thumbnailClipHint = TaskView.clipStatusAndNavBars(dp)
                     ? new RectF(thumbnailData.insets) : new RectF();
 
             float scale = thumbnailData.scale;
@@ -461,7 +450,7 @@
             // Note: Disable rotation in grid layout.
             boolean windowingModeSupportsRotation = !dp.isMultiWindowMode
                     && thumbnailData.windowingMode == WINDOWING_MODE_FULLSCREEN
-                    && !(dp.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get());
+                    && !dp.overviewShowAsGrid;
             isOrientationDifferent = isOrientationChange(deltaRotate)
                     && windowingModeSupportsRotation;
             if (canvasWidth == 0 || canvasHeight == 0 || scale == 0) {
@@ -565,7 +554,7 @@
                         -thumbnailClipHint.left * scale,
                         -thumbnailClipHint.top * scale);
             } else {
-                setThumbnailRotation(deltaRotate, thumbnailClipHint, scale, thumbnailBounds);
+                setThumbnailRotation(deltaRotate, thumbnailClipHint, scale, thumbnailBounds, dp);
             }
 
             final float widthWithInsets;
@@ -610,7 +599,7 @@
         }
 
         private void setThumbnailRotation(int deltaRotate, RectF thumbnailInsets, float scale,
-                Rect thumbnailPosition) {
+                Rect thumbnailPosition, DeviceProfile dp) {
             float newLeftInset = 0;
             float newTopInset = 0;
             float translateX = 0;
@@ -636,15 +625,17 @@
                     break;
             }
             mClippedInsets.offsetTo(newLeftInset * scale, newTopInset * scale);
-            mMatrix.postTranslate(translateX - mClippedInsets.left,
-                    translateY - mClippedInsets.top);
+            mMatrix.postTranslate(translateX, translateY);
+            if (TaskView.useFullThumbnail(dp)) {
+                mMatrix.postTranslate(-mClippedInsets.left, -mClippedInsets.top);
+            }
         }
 
         /**
          * Insets to used for clipping the thumbnail (in case it is drawing outside its own space)
          */
-        public RectF getInsetsToDrawInFullscreen() {
-            return mClippedInsets;
+        public RectF getInsetsToDrawInFullscreen(DeviceProfile dp) {
+            return TaskView.useFullThumbnail(dp) ? mClippedInsets : EMPTY_RECT_F;
         }
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index 2d322e9..174e1b3 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -77,7 +77,6 @@
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.Interpolators;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.statemanager.StatefulActivity;
@@ -92,6 +91,7 @@
 import com.android.launcher3.util.ViewPool.Reusable;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.RemoteAnimationTargets;
+import com.android.quickstep.SwipeUpAnimationLogic.RemoteTargetHandle;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskIconCache;
 import com.android.quickstep.TaskOverlayFactory;
@@ -101,16 +101,20 @@
 import com.android.quickstep.util.CancellableTask;
 import com.android.quickstep.util.RecentsOrientedState;
 import com.android.quickstep.util.TaskCornerRadius;
+import com.android.quickstep.util.TransformParams;
 import com.android.quickstep.views.TaskThumbnailView.PreviewPositionHelper;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.ActivityOptionsCompat;
 import com.android.systemui.shared.system.QuickStepContract;
+import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
 import java.lang.annotation.Retention;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
+import java.util.stream.Stream;
 
 /**
  * A task in the Recents view.
@@ -145,7 +149,16 @@
      * Should the TaskView display clip off the status and navigation bars in recents. When this
      * is false the overview shows the whole screen scaled down instead.
      */
-    public static final boolean CLIP_STATUS_AND_NAV_BARS = false;
+    public static boolean clipStatusAndNavBars(DeviceProfile deviceProfile) {
+        return deviceProfile.isTaskbarPresentInApps;
+    }
+
+    /**
+     * Should the TaskView scale down to fit whole thumbnail in fullscreen.
+     */
+    public static boolean useFullThumbnail(DeviceProfile deviceProfile) {
+        return deviceProfile.isTaskbarPresentInApps;
+    };
 
     private static final float EDGE_SCALE_DOWN_FACTOR_CAROUSEL = 0.03f;
     private static final float EDGE_SCALE_DOWN_FACTOR_GRID = 0.00f;
@@ -153,7 +166,7 @@
     public static final long SCALE_ICON_DURATION = 120;
     private static final long DIM_ANIM_DURATION = 700;
 
-    private static final Interpolator FULLSCREEN_INTERPOLATOR = ACCEL_DEACCEL;
+    private static final Interpolator GRID_INTERPOLATOR = ACCEL_DEACCEL;
 
     /**
      * This technically can be a vanilla {@link TouchDelegate} class, however that class requires
@@ -167,7 +180,7 @@
     private static final List<Rect> SYSTEM_GESTURE_EXCLUSION_RECT =
             Collections.singletonList(new Rect());
 
-    private static final FloatProperty<TaskView> FOCUS_TRANSITION =
+    public static final FloatProperty<TaskView> FOCUS_TRANSITION =
             new FloatProperty<TaskView>("focusTransition") {
                 @Override
                 public void setValue(TaskView taskView, float v) {
@@ -284,69 +297,57 @@
                 }
             };
 
-    private static final FloatProperty<TaskView> FULLSCREEN_TRANSLATION_X =
-            new FloatProperty<TaskView>("fullscreenTranslationX") {
+    private static final FloatProperty<TaskView> NON_GRID_TRANSLATION_X =
+            new FloatProperty<TaskView>("nonGridTranslationX") {
                 @Override
                 public void setValue(TaskView taskView, float v) {
-                    taskView.setFullscreenTranslationX(v);
+                    taskView.setNonGridTranslationX(v);
                 }
 
                 @Override
                 public Float get(TaskView taskView) {
-                    return taskView.mFullscreenTranslationX;
+                    return taskView.mNonGridTranslationX;
                 }
             };
 
-    private static final FloatProperty<TaskView> FULLSCREEN_TRANSLATION_Y =
-            new FloatProperty<TaskView>("fullscreenTranslationY") {
+    private static final FloatProperty<TaskView> NON_GRID_TRANSLATION_Y =
+            new FloatProperty<TaskView>("nonGridTranslationY") {
                 @Override
                 public void setValue(TaskView taskView, float v) {
-                    taskView.setFullscreenTranslationY(v);
+                    taskView.setNonGridTranslationY(v);
                 }
 
                 @Override
                 public Float get(TaskView taskView) {
-                    return taskView.mFullscreenTranslationY;
+                    return taskView.mNonGridTranslationY;
                 }
             };
 
-    private static final FloatProperty<TaskView> NON_FULLSCREEN_TRANSLATION_X =
-            new FloatProperty<TaskView>("nonFullscreenTranslationX") {
+    public static final FloatProperty<TaskView> SNAPSHOT_SCALE =
+            new FloatProperty<TaskView>("snapshotScale") {
                 @Override
                 public void setValue(TaskView taskView, float v) {
-                    taskView.setNonFullscreenTranslationX(v);
+                    taskView.setSnapshotScale(v);
                 }
 
                 @Override
                 public Float get(TaskView taskView) {
-                    return taskView.mNonFullscreenTranslationX;
-                }
-            };
-
-    private static final FloatProperty<TaskView> NON_FULLSCREEN_TRANSLATION_Y =
-            new FloatProperty<TaskView>("nonFullscreenTranslationY") {
-                @Override
-                public void setValue(TaskView taskView, float v) {
-                    taskView.setNonFullscreenTranslationY(v);
-                }
-
-                @Override
-                public Float get(TaskView taskView) {
-                    return taskView.mNonFullscreenTranslationY;
+                    return taskView.mSnapshotView.getScaleX();
                 }
             };
 
     private final TaskOutlineProvider mOutlineProvider;
 
-    private Task mTask;
-    private TaskThumbnailView mSnapshotView;
+    protected Task mTask;
+    protected TaskThumbnailView mSnapshotView;
     private IconView mIconView;
     private final DigitalWellBeingToast mDigitalWellBeingToast;
     private float mFullscreenProgress;
     private float mGridProgress;
-    private float mFullscreenScale = 1;
+    private float mNonGridScale = 1;
+    private float mDismissScale = 1;
     private final FullscreenDrawParams mCurrentFullscreenParams;
-    private final StatefulActivity mActivity;
+    protected final StatefulActivity mActivity;
 
     // Various causes of changing primary translation, which we aggregate to setTranslationX/Y().
     private float mDismissTranslationX;
@@ -356,16 +357,14 @@
     private float mTaskResistanceTranslationX;
     private float mTaskResistanceTranslationY;
     // The following translation variables should only be used in the same orientation as Launcher.
-    private float mFullscreenTranslationX;
-    private float mFullscreenTranslationY;
-    // Applied as a complement to fullscreenTranslation, for adjusting the carousel overview, or the
-    // in transition carousel before forming the grid on tablets.
-    private float mNonFullscreenTranslationX;
-    private float mNonFullscreenTranslationY;
     private float mBoxTranslationY;
     // The following grid translations scales with mGridProgress.
     private float mGridTranslationX;
     private float mGridTranslationY;
+    // Applied as a complement to gridTranslation, for adjusting the carousel overview and quick
+    // switch.
+    private float mNonGridTranslationX;
+    private float mNonGridTranslationY;
     // Used when in SplitScreenSelectState
     private float mSplitSelectTranslationY;
     private float mSplitSelectTranslationX;
@@ -376,6 +375,14 @@
     private float mModalness = 0;
     private float mStableAlpha = 1;
 
+    private int mTaskViewId = -1;
+    /**
+     * Index 0 will contain taskID of left/top task, index 1 will contain taskId of bottom/right
+     */
+    protected final int[] mTaskIdContainer = new int[]{-1, -1};
+    protected final TaskIdAttributeContainer[] mTaskIdAttributeContainer =
+            new TaskIdAttributeContainer[2];
+
     private boolean mShowScreenshot;
 
     // The current background requests to load the task thumbnail and icon
@@ -411,6 +418,14 @@
         setOutlineProvider(mOutlineProvider);
     }
 
+    public void setTaskViewId(int id) {
+        this.mTaskViewId = id;
+    }
+
+    public int getTaskViewId() {
+        return mTaskViewId;
+    }
+
     /**
      * Builds proto for logging
      */
@@ -516,16 +531,26 @@
     public void bind(Task task, RecentsOrientedState orientedState) {
         cancelPendingLoadTasks();
         mTask = task;
+        mTaskIdContainer[0] = mTask.key.id;
+        mTaskIdAttributeContainer[0] = new TaskIdAttributeContainer(task, mSnapshotView);
         mSnapshotView.bind(task);
         setOrientationState(orientedState);
     }
 
+    public TaskIdAttributeContainer[] getTaskIdAttributeContainers() {
+        return mTaskIdAttributeContainer;
+    }
+
     public Task getTask() {
         return mTask;
     }
 
-    public boolean hasTaskId(int taskId) {
-        return mTask != null && mTask.key != null && mTask.key.id == taskId;
+    /**
+     * @return integer array of two elements to be size consistent with max number of tasks possible
+     *         index 0 will contain the taskId, index 1 will be -1 indicating a null taskID value
+     */
+    public int[] getTaskIds() {
+        return mTaskIdContainer;
     }
 
     public TaskThumbnailView getThumbnail() {
@@ -540,6 +565,9 @@
         if (getTask() == null) {
             return;
         }
+        if (confirmSecondSplitSelectApp()) {
+            return;
+        }
         if (ENABLE_QUICKSTEP_LIVE_TILE.get() && isRunningTask()) {
             if (!mIsClickableAsLiveTile) {
                 return;
@@ -554,11 +582,33 @@
 
             mIsClickableAsLiveTile = false;
             RecentsView recentsView = getRecentsView();
-            final RemoteAnimationTargets targets = recentsView.getLiveTileParams().getTargetSet();
+            RemoteAnimationTargets targets;
+            RemoteTargetHandle[] remoteTargetHandles =
+                    recentsView.mRemoteTargetHandles;
+            if (remoteTargetHandles.length == 1) {
+                targets = remoteTargetHandles[0].mTransformParams.getTargetSet();
+            } else {
+                TransformParams topLeftParams = remoteTargetHandles[0].mTransformParams;
+                TransformParams rightBottomParams = remoteTargetHandles[1].mTransformParams;
+                RemoteAnimationTargetCompat[] apps = Stream.concat(
+                        Arrays.stream(topLeftParams.getTargetSet().apps),
+                        Arrays.stream(rightBottomParams.getTargetSet().apps))
+                        .toArray(RemoteAnimationTargetCompat[]::new);
+                RemoteAnimationTargetCompat[] wallpapers = Stream.concat(
+                        Arrays.stream(topLeftParams.getTargetSet().wallpapers),
+                        Arrays.stream(rightBottomParams.getTargetSet().wallpapers))
+                        .toArray(RemoteAnimationTargetCompat[]::new);
+                RemoteAnimationTargetCompat[] nonApps = Stream.concat(
+                        Arrays.stream(topLeftParams.getTargetSet().nonApps),
+                        Arrays.stream(rightBottomParams.getTargetSet().nonApps))
+                        .toArray(RemoteAnimationTargetCompat[]::new);
+                targets = new RemoteAnimationTargets(apps, wallpapers, nonApps,
+                        topLeftParams.getTargetSet().targetMode);
+            }
             if (targets == null) {
                 // If the recents animation is cancelled somehow between the parent if block and
                 // here, try to launch the task as a non live tile task.
-                launcherNonLiveTileTask();
+                launchTaskAnimated();
                 return;
             }
 
@@ -570,31 +620,29 @@
                     recentsView.getDepthController());
             anim.addListener(new AnimatorListenerAdapter() {
                 @Override
-                public void onAnimationStart(Animator animator) {
-                    recentsView.getLiveTileTaskViewSimulator().setDrawsBelowRecents(false);
-                }
-
-                @Override
                 public void onAnimationEnd(Animator animator) {
-                    recentsView.getLiveTileTaskViewSimulator().setDrawsBelowRecents(true);
                     mIsClickableAsLiveTile = true;
                 }
             });
             anim.start();
+            recentsView.onTaskLaunchedInLiveTileMode();
         } else {
-            launcherNonLiveTileTask();
+            launchTaskAnimated();
         }
         mActivity.getStatsLogManager().logger().withItemInfo(getItemInfo())
                 .log(LAUNCHER_TASK_LAUNCH_TAP);
     }
 
-    private void launcherNonLiveTileTask() {
-        if (mActivity.isInState(OVERVIEW_SPLIT_SELECT)) {
-            // User tapped to select second split screen app
+    /**
+     * @return {@code true} if user is already in split select mode and this tap was to choose the
+     *         second app. {@code false} otherwise
+     */
+    private boolean confirmSecondSplitSelectApp() {
+        boolean isSelectingSecondSplitApp = mActivity.isInState(OVERVIEW_SPLIT_SELECT);
+        if (isSelectingSecondSplitApp) {
             getRecentsView().confirmSplitSelect(this);
-        } else {
-            launchTaskAnimated();
         }
+        return isSelectingSecondSplitApp;
     }
 
     /**
@@ -608,11 +656,14 @@
             ActivityOptionsWrapper opts =  mActivity.getActivityLaunchOptions(this, null);
             if (ActivityManagerWrapper.getInstance()
                     .startActivityFromRecents(mTask.key, opts.options)) {
-                if (ENABLE_QUICKSTEP_LIVE_TILE.get() && getRecentsView().getRunningTaskId() != -1) {
+                RecentsView recentsView = getRecentsView();
+                if (ENABLE_QUICKSTEP_LIVE_TILE.get() && recentsView.getRunningTaskViewId() != -1) {
+                    recentsView.onTaskLaunchedInLiveTileMode();
+
                     // Return a fresh callback in the live tile case, so that it's not accidentally
                     // triggered by QuickstepTransitionManager.AppLaunchAnimationRunner.
                     RunnableList callbackList = new RunnableList();
-                    getRecentsView().addSideTaskLaunchCallback(callbackList);
+                    recentsView.addSideTaskLaunchCallback(callbackList);
                     return callbackList;
                 }
                 return opts.onEndCallback;
@@ -713,11 +764,11 @@
         }
     }
 
-    private boolean needsUpdate(@TaskDataChanges int dataChange, @TaskDataChanges int flag) {
+    protected boolean needsUpdate(@TaskDataChanges int dataChange, @TaskDataChanges int flag) {
         return (dataChange & flag) == flag;
     }
 
-    private void cancelPendingLoadTasks() {
+    protected void cancelPendingLoadTasks() {
         if (mThumbnailLoadRequest != null) {
             mThumbnailLoadRequest.cancel();
             mThumbnailLoadRequest = null;
@@ -747,7 +798,16 @@
     private void setIcon(Drawable icon) {
         if (icon != null) {
             mIconView.setDrawable(icon);
-            mIconView.setOnClickListener(v -> showTaskMenu());
+            mIconView.setOnClickListener(v -> {
+                if (ENABLE_QUICKSTEP_LIVE_TILE.get() && isRunningTask()) {
+                    RecentsView recentsView = getRecentsView();
+                    recentsView.switchToScreenshot(
+                            () -> recentsView.finishRecentsAnimation(true /* toRecents */,
+                                    this::showTaskMenu));
+                } else {
+                    showTaskMenu();
+                }
+            });
             mIconView.setOnLongClickListener(v -> {
                 requestDisallowInterceptTouchEvent(true);
                 return showTaskMenu();
@@ -765,8 +825,11 @@
         LayoutParams snapshotParams = (LayoutParams) mSnapshotView.getLayoutParams();
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
         snapshotParams.topMargin = deviceProfile.overviewTaskThumbnailTopMarginPx;
-        int taskIconMargin = deviceProfile.overviewTaskMarginPx;
+        boolean isGridTask = deviceProfile.overviewShowAsGrid && !isFocusedTask();
         int taskIconHeight = deviceProfile.overviewTaskIconSizePx;
+        int taskMargin = isGridTask ? deviceProfile.overviewTaskMarginGridPx
+                : deviceProfile.overviewTaskMarginPx;
+        int taskIconMargin = snapshotParams.topMargin - taskIconHeight - taskMargin;
         LayoutParams iconParams = (LayoutParams) mIconView.getLayoutParams();
         switch (orientationHandler.getRotation()) {
             case ROTATION_90:
@@ -798,9 +861,12 @@
         iconParams.width = iconParams.height = taskIconHeight;
         mIconView.setLayoutParams(iconParams);
         mIconView.setRotation(orientationHandler.getDegreesRotated());
+        int iconDrawableSize = isGridTask ? deviceProfile.overviewTaskIconDrawableSizeGridPx
+                : deviceProfile.overviewTaskIconDrawableSizePx;
+        mIconView.setDrawableSize(iconDrawableSize, iconDrawableSize);
         snapshotParams.topMargin = deviceProfile.overviewTaskThumbnailTopMarginPx;
         mSnapshotView.setLayoutParams(snapshotParams);
-        getThumbnail().getTaskOverlay().updateOrientationState(orientationState);
+        mSnapshotView.getTaskOverlay().updateOrientationState(orientationState);
     }
 
     private void setIconAndDimTransitionProgress(float progress, boolean invert) {
@@ -855,6 +921,12 @@
         setIconAndDimTransitionProgress(iconScale, invert);
     }
 
+    protected void resetPersistentViewTransforms() {
+        mNonGridTranslationX = mNonGridTranslationY =
+                mGridTranslationX = mGridTranslationY = mBoxTranslationY = 0f;
+        resetViewTransforms();
+    }
+
     protected void resetViewTransforms() {
         // fullscreenTranslation and accumulatedTranslation should not be reset, as
         // resetViewTransforms is called during Quickswitch scrolling.
@@ -862,6 +934,7 @@
                 mSplitSelectTranslationX = 0f;
         mDismissTranslationY = mTaskOffsetTranslationY = mTaskResistanceTranslationY =
                 mSplitSelectTranslationY = 0f;
+        setSnapshotScale(1f);
         applyTranslationX();
         applyTranslationY();
         setTranslationZ(0);
@@ -877,10 +950,7 @@
 
     @Override
     public void onRecycle() {
-        mFullscreenTranslationX = mFullscreenTranslationY = mNonFullscreenTranslationX =
-                mNonFullscreenTranslationY = mGridTranslationX = mGridTranslationY =
-                        mBoxTranslationY = 0f;
-        resetViewTransforms();
+        resetPersistentViewTransforms();
         // Clear any references to the thumbnail (it will be re-read either from the cache or the
         // system on next bind)
         mSnapshotView.setThumbnail(mTask, null);
@@ -938,7 +1008,7 @@
     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
         super.onLayout(changed, left, top, right, bottom);
-        if (mActivity.getDeviceProfile().isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
+        if (mActivity.getDeviceProfile().overviewShowAsGrid) {
             setPivotX(getLayoutDirection() == LAYOUT_DIRECTION_RTL ? 0 : right - left);
             setPivotY(mSnapshotView.getTop());
         } else {
@@ -955,20 +1025,23 @@
      * How much to scale down pages near the edge of the screen.
      */
     public static float getEdgeScaleDownFactor(DeviceProfile deviceProfile) {
-        if (deviceProfile.isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
-            return EDGE_SCALE_DOWN_FACTOR_GRID;
-        } else {
-            return EDGE_SCALE_DOWN_FACTOR_CAROUSEL;
-        }
+        return deviceProfile.overviewShowAsGrid ? EDGE_SCALE_DOWN_FACTOR_GRID
+                : EDGE_SCALE_DOWN_FACTOR_CAROUSEL;
     }
 
-    private void setFullscreenScale(float fullscreenScale) {
-        mFullscreenScale = fullscreenScale;
+    private void setNonGridScale(float nonGridScale) {
+        mNonGridScale = nonGridScale;
+        updateCornerRadius();
         applyScale();
     }
 
-    public float getFullscreenScale() {
-        return mFullscreenScale;
+    public float getNonGridScale() {
+        return mNonGridScale;
+    }
+
+    private void setSnapshotScale(float dismissScale) {
+        mDismissScale = dismissScale;
+        applyScale();
     }
 
     /**
@@ -985,12 +1058,23 @@
 
     private void applyScale() {
         float scale = 1;
-        float fullScreenProgress = FULLSCREEN_INTERPOLATOR.getInterpolation(mFullscreenProgress);
-        scale *= Utilities.mapRange(fullScreenProgress, 1f, mFullscreenScale);
+        scale *= getPersistentScale();
+        scale *= mDismissScale;
         setScaleX(scale);
         setScaleY(scale);
     }
 
+    /**
+     * Returns multiplication of scale that is persistent (e.g. fullscreen and grid), and does not
+     * change according to a temporary state.
+     */
+    public float getPersistentScale() {
+        float scale = 1;
+        float gridProgress = GRID_INTERPOLATOR.getInterpolation(mGridProgress);
+        scale *= Utilities.mapRange(gridProgress, mNonGridScale, 1f);
+        return scale;
+    }
+
     private void setSplitSelectTranslationX(float x) {
         mSplitSelectTranslationX = x;
         applyTranslationX();
@@ -1030,23 +1114,13 @@
         applyTranslationY();
     }
 
-    private void setFullscreenTranslationX(float fullscreenTranslationX) {
-        mFullscreenTranslationX = fullscreenTranslationX;
+    private void setNonGridTranslationX(float nonGridTranslationX) {
+        mNonGridTranslationX = nonGridTranslationX;
         applyTranslationX();
     }
 
-    private void setFullscreenTranslationY(float fullscreenTranslationY) {
-        mFullscreenTranslationY = fullscreenTranslationY;
-        applyTranslationY();
-    }
-
-    private void setNonFullscreenTranslationX(float nonFullscreenTranslationX) {
-        mNonFullscreenTranslationX = nonFullscreenTranslationX;
-        applyTranslationX();
-    }
-
-    private void setNonFullscreenTranslationY(float nonFullscreenTranslationY) {
-        mNonFullscreenTranslationY = nonFullscreenTranslationY;
+    private void setNonGridTranslationY(float nonGridTranslationY) {
+        mNonGridTranslationY = nonGridTranslationY;
         applyTranslationY();
     }
 
@@ -1070,13 +1144,10 @@
 
     public float getScrollAdjustment(boolean fullscreenEnabled, boolean gridEnabled) {
         float scrollAdjustment = 0;
-        if (fullscreenEnabled) {
-            scrollAdjustment += getPrimaryFullscreenTranslationProperty().get(this);
-        } else {
-            scrollAdjustment += getPrimaryNonFullscreenTranslationProperty().get(this);
-        }
         if (gridEnabled) {
             scrollAdjustment += mGridTranslationX;
+        } else {
+            scrollAdjustment += getPrimaryNonGridTranslationProperty().get(this);
         }
         return scrollAdjustment;
     }
@@ -1088,7 +1159,7 @@
     public float getSizeAdjustment(boolean fullscreenEnabled) {
         float sizeAdjustment = 1;
         if (fullscreenEnabled) {
-            sizeAdjustment *= mFullscreenScale;
+            sizeAdjustment *= mNonGridScale;
         }
         return sizeAdjustment;
     }
@@ -1113,9 +1184,7 @@
      * change according to a temporary state (e.g. task offset).
      */
     public float getPersistentTranslationX() {
-        return getFullscreenTrans(mFullscreenTranslationX)
-                + getNonFullscreenTrans(mNonFullscreenTranslationX)
-                + getGridTrans(mGridTranslationX);
+        return getNonGridTrans(mNonGridTranslationX) + getGridTrans(mGridTranslationX);
     }
 
     /**
@@ -1124,8 +1193,7 @@
      */
     public float getPersistentTranslationY() {
         return mBoxTranslationY
-                + getFullscreenTrans(mFullscreenTranslationY)
-                + getNonFullscreenTrans(mNonFullscreenTranslationY)
+                + getNonGridTrans(mNonGridTranslationY)
                 + getGridTrans(mGridTranslationY);
     }
 
@@ -1159,24 +1227,14 @@
                 TASK_RESISTANCE_TRANSLATION_X, TASK_RESISTANCE_TRANSLATION_Y);
     }
 
-    public FloatProperty<TaskView> getPrimaryFullscreenTranslationProperty() {
+    public FloatProperty<TaskView> getPrimaryNonGridTranslationProperty() {
         return getPagedOrientationHandler().getPrimaryValue(
-                FULLSCREEN_TRANSLATION_X, FULLSCREEN_TRANSLATION_Y);
+                NON_GRID_TRANSLATION_X, NON_GRID_TRANSLATION_Y);
     }
 
-    public FloatProperty<TaskView> getSecondaryFullscreenTranslationProperty() {
+    public FloatProperty<TaskView> getSecondaryNonGridTranslationProperty() {
         return getPagedOrientationHandler().getSecondaryValue(
-                FULLSCREEN_TRANSLATION_X, FULLSCREEN_TRANSLATION_Y);
-    }
-
-    public FloatProperty<TaskView> getPrimaryNonFullscreenTranslationProperty() {
-        return getPagedOrientationHandler().getPrimaryValue(
-                NON_FULLSCREEN_TRANSLATION_X, NON_FULLSCREEN_TRANSLATION_Y);
-    }
-
-    public FloatProperty<TaskView> getSecondaryNonFullscreenTranslationProperty() {
-        return getPagedOrientationHandler().getSecondaryValue(
-                NON_FULLSCREEN_TRANSLATION_X, NON_FULLSCREEN_TRANSLATION_Y);
+                NON_GRID_TRANSLATION_X, NON_GRID_TRANSLATION_Y);
     }
 
     @Override
@@ -1312,28 +1370,21 @@
         progress = Utilities.boundToRange(progress, 0, 1);
         mFullscreenProgress = progress;
         mIconView.setVisibility(progress < 1 ? VISIBLE : INVISIBLE);
-        getThumbnail().getTaskOverlay().setFullscreenProgress(progress);
+        mSnapshotView.getTaskOverlay().setFullscreenProgress(progress);
 
-        applyTranslationX();
-        applyTranslationY();
-        applyScale();
+        updateCornerRadius();
 
-        TaskThumbnailView thumbnail = getThumbnail();
-        updateCurrentFullscreenParams(thumbnail.getPreviewPositionHelper());
-
-        if (!getRecentsView().isTaskIconScaledDown(this)) {
-            // Some of the items in here are dependent on the current fullscreen params, but don't
-            // update them if the icon is supposed to be scaled down.
-            setIconScaleAndDim(progress, true /* invert */);
-        }
-
-        thumbnail.setFullscreenParams(mCurrentFullscreenParams);
+        mSnapshotView.setFullscreenParams(mCurrentFullscreenParams);
         mOutlineProvider.updateParams(
                 mCurrentFullscreenParams,
                 mActivity.getDeviceProfile().overviewTaskThumbnailTopMarginPx);
         invalidateOutline();
     }
 
+    private void updateCornerRadius() {
+        updateCurrentFullscreenParams(mSnapshotView.getPreviewPositionHelper());
+    }
+
     void updateCurrentFullscreenParams(PreviewPositionHelper previewPositionHelper) {
         if (getRecentsView() == null) {
             return;
@@ -1341,6 +1392,7 @@
         mCurrentFullscreenParams.setProgress(
                 mFullscreenProgress,
                 getRecentsView().getScaleX(),
+                mNonGridScale,
                 getWidth(), mActivity.getDeviceProfile(),
                 previewPositionHelper);
     }
@@ -1351,69 +1403,49 @@
      */
     void updateTaskSize() {
         ViewGroup.LayoutParams params = getLayoutParams();
-        float fullscreenScale;
+        float nonGridScale;
         float boxTranslationY;
         int expectedWidth;
         int expectedHeight;
-        if (mActivity.getDeviceProfile().isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get()) {
-            final int thumbnailPadding =
-                    mActivity.getDeviceProfile().overviewTaskThumbnailTopMarginPx;
+        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
+        if (deviceProfile.overviewShowAsGrid) {
+            final int thumbnailPadding = deviceProfile.overviewTaskThumbnailTopMarginPx;
             final Rect lastComputedTaskSize = getRecentsView().getLastComputedTaskSize();
             final int taskWidth = lastComputedTaskSize.width();
             final int taskHeight = lastComputedTaskSize.height();
 
             int boxWidth;
             int boxHeight;
-            float thumbnailRatio;
             boolean isFocusedTask = isFocusedTask();
             if (isFocusedTask) {
                 // Task will be focused and should use focused task size. Use focusTaskRatio
                 // that is associated with the original orientation of the focused task.
                 boxWidth = taskWidth;
                 boxHeight = taskHeight;
-                thumbnailRatio = getRecentsView().getFocusedTaskRatio();
             } else {
                 // Otherwise task is in grid, and should use lastComputedGridTaskSize.
                 Rect lastComputedGridTaskSize = getRecentsView().getLastComputedGridTaskSize();
                 boxWidth = lastComputedGridTaskSize.width();
                 boxHeight = lastComputedGridTaskSize.height();
-                thumbnailRatio = mTask != null ? mTask.getVisibleThumbnailRatio(
-                        TaskView.CLIP_STATUS_AND_NAV_BARS) : 0f;
             }
-            int boxLength = Math.max(boxWidth, boxHeight);
 
             // Bound width/height to the box size.
-            if (thumbnailRatio == 0f) {
-                expectedWidth = boxWidth;
-                expectedHeight = boxHeight + thumbnailPadding;
-            } else if (thumbnailRatio > 1) {
-                expectedWidth = boxLength;
-                expectedHeight = (int) (boxLength / thumbnailRatio) + thumbnailPadding;
-            } else {
-                expectedWidth = (int) (boxLength * thumbnailRatio);
-                expectedHeight = boxLength + thumbnailPadding;
-            }
+            expectedWidth = boxWidth;
+            expectedHeight = boxHeight + thumbnailPadding;
 
             // Scale to to fit task Rect.
-            fullscreenScale = taskWidth / (float) boxWidth;
-
-            // In full screen, scale back TaskView to original size.
-            if (expectedWidth > boxWidth) {
-                fullscreenScale *= boxWidth / (float) expectedWidth;
-            } else if (expectedHeight - thumbnailPadding > boxHeight) {
-                fullscreenScale *= boxHeight / (float) (expectedHeight - thumbnailPadding);
-            }
+            nonGridScale = taskWidth / (float) boxWidth;
 
             // Align to top of task Rect.
             boxTranslationY = (expectedHeight - thumbnailPadding - taskHeight) / 2.0f;
         } else {
-            fullscreenScale = 1f;
+            nonGridScale = 1f;
             boxTranslationY = 0f;
             expectedWidth = ViewGroup.LayoutParams.MATCH_PARENT;
             expectedHeight = ViewGroup.LayoutParams.MATCH_PARENT;
         }
 
-        setFullscreenScale(fullscreenScale);
+        setNonGridScale(nonGridScale);
         setBoxTranslationY(boxTranslationY);
         if (params.width != expectedWidth || params.height != expectedHeight) {
             params.width = expectedWidth;
@@ -1422,20 +1454,15 @@
         }
     }
 
-    private float getFullscreenTrans(float endTranslation) {
-        float progress = FULLSCREEN_INTERPOLATOR.getInterpolation(mFullscreenProgress);
-        return Utilities.mapRange(progress, 0, endTranslation);
-    }
-
-    private float getNonFullscreenTrans(float endTranslation) {
-        return endTranslation - getFullscreenTrans(endTranslation);
-    }
-
     private float getGridTrans(float endTranslation) {
-        float progress = ACCEL_DEACCEL.getInterpolation(mGridProgress);
+        float progress = GRID_INTERPOLATOR.getInterpolation(mGridProgress);
         return Utilities.mapRange(progress, 0, endTranslation);
     }
 
+    private float getNonGridTrans(float endTranslation) {
+        return endTranslation - getGridTrans(endTranslation);
+    }
+
     public boolean isRunningTask() {
         if (getRecentsView() == null) {
             return false;
@@ -1487,7 +1514,6 @@
         private final float mCornerRadius;
         private final float mWindowCornerRadius;
 
-        public float mFullscreenProgress;
         public RectF mCurrentDrawnInsets = new RectF();
         public float mCurrentDrawnCornerRadius;
         /** The current scale we apply to the thumbnail to adjust for new left/right insets. */
@@ -1503,20 +1529,23 @@
         /**
          * Sets the progress in range [0, 1]
          */
-        public void setProgress(float fullscreenProgress, float parentScale, int previewWidth,
-                DeviceProfile dp, PreviewPositionHelper pph) {
-            mFullscreenProgress = fullscreenProgress;
-            RectF insets = pph.getInsetsToDrawInFullscreen();
+        public void setProgress(float fullscreenProgress, float parentScale, float taskViewScale,
+                int previewWidth, DeviceProfile dp, PreviewPositionHelper pph) {
+            RectF insets = pph.getInsetsToDrawInFullscreen(dp);
 
             float currentInsetsLeft = insets.left * fullscreenProgress;
             float currentInsetsRight = insets.right * fullscreenProgress;
+            float insetsBottom = insets.bottom;
+            if (dp.isTaskbarPresentInApps) {
+                insetsBottom = Math.max(0, insetsBottom - dp.taskbarSize);
+            }
             mCurrentDrawnInsets.set(currentInsetsLeft, insets.top * fullscreenProgress,
-                    currentInsetsRight, insets.bottom * fullscreenProgress);
+                    currentInsetsRight, insetsBottom * fullscreenProgress);
             float fullscreenCornerRadius = dp.isMultiWindowMode ? 0 : mWindowCornerRadius;
 
             mCurrentDrawnCornerRadius =
                     Utilities.mapRange(fullscreenProgress, mCornerRadius, fullscreenCornerRadius)
-                            / parentScale;
+                            / parentScale / taskViewScale;
 
             // We scaled the thumbnail to fit the content (excluding insets) within task view width.
             // Now that we are drawing left/right insets again, we need to scale down to fit them.
@@ -1526,4 +1555,22 @@
         }
 
     }
+
+    public class TaskIdAttributeContainer {
+        private final TaskThumbnailView thumbnailView;
+        private final Task task;
+
+        public TaskIdAttributeContainer(Task task, TaskThumbnailView thumbnailView) {
+            this.task = task;
+            this.thumbnailView = thumbnailView;
+        }
+
+        public TaskThumbnailView getThumbnailView() {
+            return thumbnailView;
+        }
+
+        public Task getTask() {
+            return task;
+        }
+    }
 }
diff --git a/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java b/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java
index dc73a9a..ca47de3 100644
--- a/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java
+++ b/quickstep/tests/src/com/android/quickstep/AbstractQuickStepTest.java
@@ -82,6 +82,6 @@
 
         RecentsView recentsView = launcher.getOverviewPanel();
         return recentsView.getSizeStrategy().isInLiveTileMode()
-                && recentsView.getRunningTaskId() != -1;
+                && recentsView.getRunningTaskViewId() != -1;
     }
 }
diff --git a/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java b/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
index a683d01..45e7e69 100644
--- a/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
+++ b/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
@@ -98,6 +98,7 @@
         mDevice = UiDevice.getInstance(instrumentation);
         mDevice.setOrientationNatural();
         mLauncher = new LauncherInstrumentation();
+        mLauncher.enableDebugTracing();
         // b/143488140
         //mLauncher.enableCheckEventsForSuccessfulGestures();
 
diff --git a/quickstep/tests/src/com/android/quickstep/NavigationBarRotationContextTest.java b/quickstep/tests/src/com/android/quickstep/NavigationBarRotationContextTest.java
new file mode 100644
index 0000000..af5819a
--- /dev/null
+++ b/quickstep/tests/src/com/android/quickstep/NavigationBarRotationContextTest.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.quickstep;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.view.View;
+import android.view.WindowInsetsController;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.launcher3.taskbar.contextual.RotationButton;
+import com.android.launcher3.taskbar.contextual.RotationButtonController;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+
+/** SysUI equivalent */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class NavigationBarRotationContextTest {
+    private static final int DEFAULT_ROTATE = 0;
+    private static final int DEFAULT_DISPLAY = 0;
+
+
+    private RotationButtonController mRotationButtonController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        Context mTargetContext = InstrumentationRegistry.getTargetContext();
+        final View view = new View(mTargetContext);
+        RotationButton rotationButton = mock(RotationButton.class);
+        mRotationButtonController = new RotationButtonController(mTargetContext, 0, 0);
+        mRotationButtonController.setRotationButton(rotationButton);
+        // Due to a mockito issue, only spy the object after setting the initial state
+        mRotationButtonController = spy(mRotationButtonController);
+        final AnimatedVectorDrawable kbd = mock(AnimatedVectorDrawable.class);
+        doReturn(view).when(rotationButton).getCurrentView();
+        doReturn(true).when(rotationButton).acceptRotationProposal();
+    }
+
+    @Test
+    public void testOnInvalidRotationProposal() {
+        mRotationButtonController.onRotationProposal(DEFAULT_ROTATE + 1,
+                false /* isValid */);
+        verify(mRotationButtonController, times(1))
+                .setRotateSuggestionButtonState(false /* visible */);
+    }
+
+    @Test
+    public void testOnSameRotationProposal() {
+        mRotationButtonController.onRotationProposal(DEFAULT_ROTATE,
+                true /* isValid */);
+        verify(mRotationButtonController, times(1))
+                .setRotateSuggestionButtonState(false /* visible */);
+    }
+
+    @Test
+    public void testOnRotationProposalShowButtonShowNav() {
+        // No navigation bar should not call to set visibility state
+        mRotationButtonController.onBehaviorChanged(DEFAULT_DISPLAY,
+                WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
+        mRotationButtonController.onTaskBarVisibilityChange(false /* showing */);
+        verify(mRotationButtonController, times(0)).setRotateSuggestionButtonState(
+                false /* visible */);
+        verify(mRotationButtonController, times(0)).setRotateSuggestionButtonState(
+                true /* visible */);
+
+        // No navigation bar with rotation change should not call to set visibility state
+        mRotationButtonController.onRotationProposal(DEFAULT_ROTATE + 1,
+                true /* isValid */);
+        verify(mRotationButtonController, times(0)).setRotateSuggestionButtonState(
+                false /* visible */);
+        verify(mRotationButtonController, times(0)).setRotateSuggestionButtonState(
+                true /* visible */);
+
+        // Since rotation has changed rotation should be pending, show mButton when showing nav bar
+        mRotationButtonController.onTaskBarVisibilityChange(true /* showing */);
+        verify(mRotationButtonController, times(1)).setRotateSuggestionButtonState(
+                true /* visible */);
+    }
+
+    @Test
+    public void testOnRotationProposalShowButton() {
+        // Navigation bar being visible should not call to set visibility state
+        mRotationButtonController.onTaskBarVisibilityChange(true /* showing */);
+        verify(mRotationButtonController, times(0))
+                .setRotateSuggestionButtonState(false /* visible */);
+        verify(mRotationButtonController, times(0))
+                .setRotateSuggestionButtonState(true /* visible */);
+
+        // Navigation bar is visible and rotation requested
+        mRotationButtonController.onRotationProposal(DEFAULT_ROTATE + 1,
+                true /* isValid */);
+        verify(mRotationButtonController, times(1))
+                .setRotateSuggestionButtonState(true /* visible */);
+    }
+}
diff --git a/quickstep/tests/src/com/android/quickstep/NavigationModeSwitchRule.java b/quickstep/tests/src/com/android/quickstep/NavigationModeSwitchRule.java
index 67840d1..bc8602c 100644
--- a/quickstep/tests/src/com/android/quickstep/NavigationModeSwitchRule.java
+++ b/quickstep/tests/src/com/android/quickstep/NavigationModeSwitchRule.java
@@ -49,6 +49,7 @@
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Test rule that allows executing a test with Quickstep on and then Quickstep off.
@@ -182,17 +183,12 @@
                     };
             targetContext.getMainExecutor().execute(() ->
                     SYS_UI_NAVIGATION_MODE.addModeChangeListener(listener));
-            // b/139137636
-//            latch.await(60, TimeUnit.SECONDS);
+            latch.await(60, TimeUnit.SECONDS);
             targetContext.getMainExecutor().execute(() ->
                     SYS_UI_NAVIGATION_MODE.removeModeChangeListener(listener));
 
-            Wait.atMost(() -> "Navigation mode didn't change to " + expectedMode,
-                    () -> currentSysUiNavigationMode() == expectedMode, WAIT_TIME_MS,
-                    launcher);
-            // b/139137636
-//            assertTrue(launcher, "Navigation mode didn't change to " + expectedMode,
-//                    currentSysUiNavigationMode() == expectedMode, description);
+            assertTrue(launcher, "Navigation mode didn't change to " + expectedMode,
+                    currentSysUiNavigationMode() == expectedMode, description);
 
         }
 
diff --git a/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java b/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java
index 6e19436..f44a812 100644
--- a/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java
+++ b/quickstep/tests/src/com/android/quickstep/StartLauncherViaGestureTests.java
@@ -25,6 +25,7 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.launcher3.Launcher;
+import com.android.launcher3.ui.TaplTestsLauncher3;
 import com.android.launcher3.util.RaceConditionReproducer;
 import com.android.quickstep.NavigationModeSwitchRule.Mode;
 import com.android.quickstep.NavigationModeSwitchRule.NavigationModeSwitch;
@@ -45,6 +46,7 @@
     @Before
     public void setUp() throws Exception {
         super.setUp();
+        TaplTestsLauncher3.initialize(this);
         // b/143488140
         mLauncher.pressHome();
         // Start an activity where the gestures start.
diff --git a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
index a5038a1..e5e560a 100644
--- a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
+++ b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
@@ -23,7 +23,6 @@
 import static org.junit.Assert.assertTrue;
 
 import android.content.Intent;
-import android.util.Log;
 
 import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
@@ -37,7 +36,6 @@
 import com.android.launcher3.tapl.Overview;
 import com.android.launcher3.tapl.OverviewActions;
 import com.android.launcher3.tapl.OverviewTask;
-import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.ui.TaplTestsLauncher3;
 import com.android.quickstep.NavigationModeSwitchRule.NavigationModeSwitch;
 import com.android.quickstep.views.RecentsView;
@@ -145,12 +143,8 @@
                 launcher -> assertEquals("Dismissing a task didn't remove 1 task from Overview",
                         numTasks - 1, getTaskCount(launcher)));
 
-        // Test UIDevice.pressHome, once we are in AllApps.
-        mDevice.pressHome();
-        waitForState("Launcher internal state didn't switch to Home", () -> LauncherState.NORMAL);
-
         // Test dismissing all tasks.
-        mLauncher.getWorkspace().switchToOverview().dismissAllTasks();
+        mLauncher.pressHome().switchToOverview().dismissAllTasks();
         waitForState("Launcher internal state didn't switch to Home", () -> LauncherState.NORMAL);
         executeOnLauncher(
                 launcher -> assertEquals("Still have tasks after dismissing all",
diff --git a/quickstep/tests/src/com/android/quickstep/ViewInflationDuringSwipeUp.java b/quickstep/tests/src/com/android/quickstep/ViewInflationDuringSwipeUp.java
index f33abb0..0f5a1c8 100644
--- a/quickstep/tests/src/com/android/quickstep/ViewInflationDuringSwipeUp.java
+++ b/quickstep/tests/src/com/android/quickstep/ViewInflationDuringSwipeUp.java
@@ -19,9 +19,9 @@
 import static androidx.test.InstrumentationRegistry.getInstrumentation;
 import static androidx.test.InstrumentationRegistry.getTargetContext;
 
-import static com.android.launcher3.common.WidgetUtils.createWidgetInfo;
 import static com.android.launcher3.testcomponent.TestCommandReceiver.EXTRA_VALUE;
 import static com.android.launcher3.testcomponent.TestCommandReceiver.SET_LIST_VIEW_SERVICE_BINDER;
+import static com.android.launcher3.util.WidgetUtils.createWidgetInfo;
 import static com.android.quickstep.NavigationModeSwitchRule.Mode.ZERO_BUTTON;
 
 import static org.junit.Assert.assertEquals;
diff --git a/res/drawable-v31/bg_deferred_app_widget.xml b/res/drawable-v31/bg_deferred_app_widget.xml
new file mode 100644
index 0000000..a08998d
--- /dev/null
+++ b/res/drawable-v31/bg_deferred_app_widget.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2021 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+    android:inset="8dp">
+    <shape android:shape="rectangle">
+        <corners android:radius="@android:dimen/system_app_widget_background_radius" />
+        <solid android:color="#77000000" />
+    </shape>
+</inset>
diff --git a/res/drawable-v28/widgets_bottom_sheet_background.xml b/res/drawable/bg_widgets_full_sheet.xml
similarity index 65%
rename from res/drawable-v28/widgets_bottom_sheet_background.xml
rename to res/drawable/bg_widgets_full_sheet.xml
index 7fb8681..dfcd354 100644
--- a/res/drawable-v28/widgets_bottom_sheet_background.xml
+++ b/res/drawable/bg_widgets_full_sheet.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2021 The Android Open Source Project
+<!-- Copyright (C) 2021 The Android Open Source Project
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -14,13 +13,11 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
+
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-    <solid android:color="@color/surface" />
+    android:shape="rectangle" >
+    <solid android:color="?android:attr/colorBackground" />
     <corners
-        android:topLeftRadius="?android:attr/dialogCornerRadius"
-        android:topRightRadius="?android:attr/dialogCornerRadius"
-        android:bottomLeftRadius="0dp"
-        android:bottomRightRadius="0dp"
-        />
+        android:topLeftRadius="@dimen/dialogCornerRadius"
+        android:topRightRadius="@dimen/dialogCornerRadius" />
 </shape>
\ No newline at end of file
diff --git a/res/drawable/bg_widgets_picker_handle.xml b/res/drawable/bg_widgets_picker_handle.xml
deleted file mode 100644
index 68681a6..0000000
--- a/res/drawable/bg_widgets_picker_handle.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2021 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item>
-        <shape android:shape="rectangle">
-            <solid android:color="?android:attr/colorBackground" />
-            <padding android:top="16dp"/>
-        </shape>
-    </item>
-    <item android:gravity="center">
-        <shape android:shape="rectangle">
-            <solid android:color="?android:attr/textColorSecondary" />
-            <size android:width="48dp" android:height="2dp" />
-        </shape>
-    </item>
-</layer-list>
\ No newline at end of file
diff --git a/res/drawable/widgets_bottom_sheet_background.xml b/res/drawable/widgets_bottom_sheet_background.xml
deleted file mode 100644
index b877546..0000000
--- a/res/drawable/widgets_bottom_sheet_background.xml
+++ /dev/null
@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2021 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-    <solid android:color="@color/surface" />
-    <corners
-        android:topLeftRadius="@dimen/default_dialog_corner_radius"
-        android:topRightRadius="@dimen/default_dialog_corner_radius"
-        android:bottomLeftRadius="0dp"
-        android:bottomRightRadius="0dp"
-        />
-</shape>
\ No newline at end of file
diff --git a/res/layout/add_item_confirmation_activity.xml b/res/layout/add_item_confirmation_activity.xml
index 0e06690..e29e1b1 100644
--- a/res/layout/add_item_confirmation_activity.xml
+++ b/res/layout/add_item_confirmation_activity.xml
@@ -37,7 +37,7 @@
             android:id="@+id/add_item_bottom_sheet_content"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:padding="24dp"
+            android:paddingVertical="24dp"
             android:background="@drawable/add_item_dialog_background"
             android:orientation="vertical" >
 
@@ -46,6 +46,7 @@
                 android:id="@+id/widget_appName"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
+                android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
                 android:gravity="center_horizontal"
                 android:textColor="?android:attr/textColorPrimary"
                 android:textSize="24sp"
@@ -55,8 +56,10 @@
                 android:maxLines="1" />
 
             <TextView
+                android:id="@+id/widget_drag_instruction"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
+                android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
                 android:gravity="center_horizontal"
                 android:paddingTop="8dp"
                 android:text="@string/add_item_request_drag_hint"
@@ -64,25 +67,37 @@
                 android:textColor="?android:attr/textColorSecondary"
                 android:alpha="0.7"/>
 
-            <include layout="@layout/widget_cell"
-                android:id="@+id/widget_cell"
+            <ScrollView
+                android:id="@+id/widget_preview_scroll_view"
                 android:layout_width="match_parent"
                 android:layout_height="0dp"
-                android:layout_weight="1"
-                android:layout_marginVertical="16dp" />
+                android:layout_marginVertical="16dp"
+                android:layout_weight="1">
+
+                <include
+                    android:id="@+id/widget_cell"
+                    layout="@layout/widget_cell"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin" />
+            </ScrollView>
 
             <LinearLayout
+                android:id="@+id/actions_container"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
+                android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
                 android:gravity="center_vertical|end"
                 android:paddingVertical="8dp"
                 android:orientation="horizontal">
                 <Button
                     style="@style/Button.FullRounded.Colored"
                     android:layout_width="wrap_content"
-                    android:layout_height="36dp"
+                    android:layout_height="wrap_content"
                     android:paddingHorizontal="16dp"
                     android:textSize="14sp"
+                    android:maxLines="2"
+                    android:ellipsize="end"
                     android:textColor="@color/button_text"
                     android:text="@android:string/cancel"
                     android:onClick="onCancelClick"/>
@@ -94,9 +109,11 @@
                 <Button
                     style="@style/Button.FullRounded.Colored"
                     android:layout_width="wrap_content"
-                    android:layout_height="36dp"
+                    android:layout_height="wrap_content"
                     android:paddingHorizontal="16dp"
                     android:textSize="14sp"
+                    android:maxLines="2"
+                    android:ellipsize="end"
                     android:textColor="@color/button_text"
                     android:text="@string/add_to_home_screen"
                     android:onClick="onPlaceAutomaticallyClick"/>
diff --git a/res/layout/floating_split_select_view.xml b/res/layout/floating_split_select_view.xml
new file mode 100644
index 0000000..e184b91
--- /dev/null
+++ b/res/layout/floating_split_select_view.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.android.quickstep.views.FloatingTaskView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ImageView
+        android:id="@+id/thumbnail"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone" />
+
+    <com.android.quickstep.views.SplitPlaceholderView
+        android:id="@+id/split_placeholder"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/split_placeholder_size"
+        android:background="@android:color/white"
+        android:visibility="gone" />
+
+</com.android.quickstep.views.FloatingTaskView>
\ No newline at end of file
diff --git a/res/layout/launcher_preview_two_panel_layout.xml b/res/layout/launcher_preview_two_panel_layout.xml
new file mode 100644
index 0000000..f76fc5a
--- /dev/null
+++ b/res/layout/launcher_preview_two_panel_layout.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<view class="com.android.launcher3.graphics.LauncherPreviewRenderer$LauncherPreviewLayout"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:launcher="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:focusable="false">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <com.android.launcher3.CellLayout
+            android:id="@+id/workspace"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:theme="@style/HomeScreenElementTheme"
+            launcher:containerType="workspace"
+            launcher:layout_constraintStart_toStartOf="parent"
+            launcher:layout_constraintTop_toTopOf="parent"
+            launcher:layout_constraintEnd_toStartOf="@id/workspace_right"
+            launcher:layout_constraintBottom_toBottomOf="parent"
+            launcher:pageIndicator="@+id/page_indicator" />
+
+        <com.android.launcher3.CellLayout
+            android:id="@+id/workspace_right"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:theme="@style/HomeScreenElementTheme"
+            launcher:containerType="workspace"
+            launcher:layout_constraintStart_toEndOf="@id/workspace"
+            launcher:layout_constraintTop_toTopOf="parent"
+            launcher:layout_constraintEnd_toEndOf="parent"
+            launcher:layout_constraintBottom_toBottomOf="parent"
+            launcher:pageIndicator="@+id/page_indicator" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <include
+        android:id="@+id/hotseat"
+        layout="@layout/hotseat" />
+
+</view>
\ No newline at end of file
diff --git a/res/layout/system_shortcut.xml b/res/layout/system_shortcut.xml
index de091c5..89895e5 100644
--- a/res/layout/system_shortcut.xml
+++ b/res/layout/system_shortcut.xml
@@ -16,36 +16,12 @@
 
 <com.android.launcher3.shortcuts.DeepShortcutView
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:launcher="http://schemas.android.com/apk/res-auto"
     android:layout_width="@dimen/bg_popup_item_width"
     android:layout_height="@dimen/bg_popup_item_height"
     android:elevation="@dimen/deep_shortcuts_elevation"
     android:background="@drawable/middle_item_primary"
     android:theme="@style/PopupItem" >
 
-    <com.android.launcher3.BubbleTextView
-        style="@style/BaseIconUnBounded"
-        android:id="@+id/bubble_text"
-        android:background="?android:attr/selectableItemBackground"
-        android:gravity="start|center_vertical"
-        android:textAlignment="viewStart"
-        android:paddingStart="@dimen/deep_shortcuts_text_padding_start"
-        android:paddingEnd="@dimen/popup_padding_end"
-        android:textSize="14sp"
-        android:minLines="1"
-        android:maxLines="2"
-        android:ellipsize="end"
-        android:textColor="?android:attr/textColorPrimary"
-        launcher:iconDisplay="shortcut_popup"
-        launcher:layoutHorizontal="true"
-        android:focusable="false" />
-
-    <View
-        android:id="@+id/icon"
-        android:layout_width="@dimen/system_shortcut_icon_size"
-        android:layout_height="@dimen/system_shortcut_icon_size"
-        android:layout_marginStart="@dimen/system_shortcut_margin_start"
-        android:layout_gravity="start|center_vertical"
-        android:backgroundTint="?android:attr/textColorPrimary"/>
+    <include layout="@layout/system_shortcut_content" />
 
 </com.android.launcher3.shortcuts.DeepShortcutView>
diff --git a/res/layout/system_shortcut_content.xml b/res/layout/system_shortcut_content.xml
new file mode 100644
index 0000000..8b39202
--- /dev/null
+++ b/res/layout/system_shortcut_content.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<merge
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:launcher="http://schemas.android.com/apk/res-auto" >
+
+    <com.android.launcher3.BubbleTextView
+        style="@style/BaseIconUnBounded"
+        android:id="@+id/bubble_text"
+        android:background="?android:attr/selectableItemBackground"
+        android:gravity="start|center_vertical"
+        android:textAlignment="viewStart"
+        android:paddingStart="@dimen/deep_shortcuts_text_padding_start"
+        android:paddingEnd="@dimen/popup_padding_end"
+        android:textSize="14sp"
+        android:minLines="1"
+        android:maxLines="2"
+        android:ellipsize="end"
+        android:textColor="?android:attr/textColorPrimary"
+        launcher:iconDisplay="shortcut_popup"
+        launcher:layoutHorizontal="true"
+        android:focusable="false" />
+
+    <View
+        android:id="@+id/icon"
+        android:layout_width="@dimen/system_shortcut_icon_size"
+        android:layout_height="@dimen/system_shortcut_icon_size"
+        android:layout_marginStart="@dimen/system_shortcut_margin_start"
+        android:layout_gravity="start|center_vertical"
+        android:backgroundTint="?android:attr/textColorPrimary"/>
+</merge>
\ No newline at end of file
diff --git a/res/layout/widgets_bottom_sheet_content.xml b/res/layout/widgets_bottom_sheet_content.xml
index 3b3ff8b..1a2cfc6 100644
--- a/res/layout/widgets_bottom_sheet_content.xml
+++ b/res/layout/widgets_bottom_sheet_content.xml
@@ -18,7 +18,7 @@
         android:id="@+id/widgets_bottom_sheet"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:background="@drawable/widgets_bottom_sheet_background"
+        android:background="@drawable/bg_rounded_corner_bottom_sheet"
         android:paddingTop="16dp"
         android:orientation="vertical">
         <View
@@ -47,6 +47,7 @@
             <include layout="@layout/widgets_table_container"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
+                android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
                 android:layout_gravity="center_horizontal" />
         </ScrollView>
     </LinearLayout>
diff --git a/res/layout/widgets_full_sheet.xml b/res/layout/widgets_full_sheet.xml
index 1b4f3b9..8afd40b 100644
--- a/res/layout/widgets_full_sheet.xml
+++ b/res/layout/widgets_full_sheet.xml
@@ -19,13 +19,21 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:theme="?attr/widgetsTheme" >
+    android:theme="?attr/widgetsTheme">
 
-    <com.android.launcher3.views.TopRoundedCornerView
+    <com.android.launcher3.views.SpringRelativeLayout
         android:id="@+id/container"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:background="?android:attr/colorBackground">
+        android:background="@drawable/bg_widgets_full_sheet">
+
+        <View
+            android:id="@+id/collapse_handle"
+            android:layout_width="48dp"
+            android:layout_height="2dp"
+            android:layout_marginTop="16dp"
+            android:layout_centerHorizontal="true"
+            android:background="?android:attr/textColorSecondary"/>
 
         <TextView
             android:id="@+id/no_widgets_text"
@@ -35,6 +43,7 @@
             android:visibility="gone"
             android:fontFamily="sans-serif-medium"
             android:textSize="20sp"
+            android:layout_below="@id/search_and_recommendations_container"
             tools:text="No widgets available" />
 
         <!-- Fast scroller popup -->
@@ -57,8 +66,10 @@
             android:id="@+id/search_widgets_list_view"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_below="@id/collapse_handle"
+            android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
             android:visibility="gone"
             android:clipToPadding="false" />
 
-    </com.android.launcher3.views.TopRoundedCornerView>
+    </com.android.launcher3.views.SpringRelativeLayout>
 </com.android.launcher3.widget.picker.WidgetsFullSheet>
\ No newline at end of file
diff --git a/res/layout/widgets_full_sheet_paged_view.xml b/res/layout/widgets_full_sheet_paged_view.xml
index f0ddc2b..85f14cd 100644
--- a/res/layout/widgets_full_sheet_paged_view.xml
+++ b/res/layout/widgets_full_sheet_paged_view.xml
@@ -20,8 +20,9 @@
         android:id="@+id/widgets_view_pager"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
+        android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
         android:clipToPadding="false"
-        android:paddingTop="@dimen/widget_picker_view_pager_top_padding"
+        android:layout_below="@id/collapse_handle"
         android:descendantFocusability="afterDescendants"
         launcher:pageIndicator="@+id/tabs">
 
@@ -39,5 +40,84 @@
 
     </com.android.launcher3.workprofile.PersonalWorkPagedView>
 
-    <include layout="@layout/widgets_personal_work_tabs"/>
+    <!-- SearchAndRecommendationsView contains the tab layout as well -->
+    <com.android.launcher3.widget.picker.SearchAndRecommendationsView
+        android:id="@+id/search_and_recommendations_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
+        android:layout_below="@id/collapse_handle"
+        android:paddingBottom="0dp"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_horizontal"
+            android:textSize="24sp"
+            android:layout_marginTop="24dp"
+            android:textColor="?android:attr/textColorSecondary"
+            android:text="@string/widget_button_text"/>
+
+        <FrameLayout
+            android:id="@+id/search_bar_container"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:elevation="0.1dp"
+            android:background="?android:attr/colorBackground"
+            android:paddingBottom="8dp"
+            android:clipToPadding="false">
+            <include layout="@layout/widgets_search_bar" />
+        </FrameLayout>
+
+        <com.android.launcher3.widget.picker.WidgetsRecommendationTableLayout
+            android:id="@+id/recommended_widget_table"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:background="@drawable/widgets_recommendation_background"
+            android:paddingVertical="@dimen/recommended_widgets_table_vertical_padding"
+            android:visibility="gone" />
+
+        <com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip
+            android:id="@+id/tabs"
+            android:layout_width="match_parent"
+            android:layout_height="64dp"
+            android:gravity="center_horizontal"
+            android:orientation="horizontal"
+            android:paddingVertical="8dp"
+            android:paddingLeft="@dimen/widget_tabs_horizontal_padding"
+            android:paddingRight="@dimen/widget_tabs_horizontal_padding"
+            android:background="?android:attr/colorBackground"
+            style="@style/TextHeadline">
+
+            <Button
+                android:id="@+id/tab_personal"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_marginEnd="@dimen/widget_tabs_button_horizontal_padding"
+                android:layout_marginVertical="@dimen/widget_apps_tabs_vertical_padding"
+                android:layout_weight="1"
+                android:background="@drawable/all_apps_tabs_background"
+                android:text="@string/widgets_full_sheet_personal_tab"
+                android:textColor="@color/all_apps_tab_text"
+                android:textSize="14sp"
+                style="?android:attr/borderlessButtonStyle" />
+
+            <Button
+                android:id="@+id/tab_work"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_marginEnd="@dimen/widget_tabs_button_horizontal_padding"
+                android:layout_marginVertical="@dimen/widget_apps_tabs_vertical_padding"
+                android:layout_weight="1"
+                android:background="@drawable/all_apps_tabs_background"
+                android:text="@string/widgets_full_sheet_work_tab"
+                android:textColor="@color/all_apps_tab_text"
+                android:textSize="14sp"
+                style="?android:attr/borderlessButtonStyle" />
+        </com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip>
+
+    </com.android.launcher3.widget.picker.SearchAndRecommendationsView>
 </merge>
\ No newline at end of file
diff --git a/res/layout/widgets_full_sheet_recyclerview.xml b/res/layout/widgets_full_sheet_recyclerview.xml
index fbe559c..dde82ea 100644
--- a/res/layout/widgets_full_sheet_recyclerview.xml
+++ b/res/layout/widgets_full_sheet_recyclerview.xml
@@ -13,9 +13,54 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.launcher3.widget.picker.WidgetsRecyclerView
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/primary_widgets_list_view"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:clipToPadding="false" />
\ No newline at end of file
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
+    <com.android.launcher3.widget.picker.WidgetsRecyclerView
+        android:id="@+id/primary_widgets_list_view"
+        android:layout_below="@id/collapse_handle"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
+        android:clipToPadding="false" />
+
+    <!-- SearchAndRecommendationsView without the tab layout as well -->
+    <com.android.launcher3.widget.picker.SearchAndRecommendationsView
+        android:id="@+id/search_and_recommendations_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
+        android:layout_below="@id/collapse_handle"
+        android:paddingBottom="16dp"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_horizontal"
+            android:textSize="24sp"
+            android:layout_marginTop="24dp"
+            android:textColor="?android:attr/textColorSecondary"
+            android:text="@string/widget_button_text"/>
+
+        <FrameLayout
+            android:id="@+id/search_bar_container"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:elevation="0.1dp"
+            android:background="?android:attr/colorBackground"
+            android:paddingBottom="8dp"
+            android:clipToPadding="false">
+            <include layout="@layout/widgets_search_bar" />
+        </FrameLayout>
+
+        <com.android.launcher3.widget.picker.WidgetsRecommendationTableLayout
+            android:id="@+id/recommended_widget_table"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:background="@drawable/widgets_recommendation_background"
+            android:paddingVertical="@dimen/recommended_widgets_table_vertical_padding"
+            android:visibility="gone" />
+    </com.android.launcher3.widget.picker.SearchAndRecommendationsView>
+
+</merge>
\ No newline at end of file
diff --git a/res/layout/widgets_full_sheet_search_and_recommendations.xml b/res/layout/widgets_full_sheet_search_and_recommendations.xml
deleted file mode 100644
index 4a3e20d..0000000
--- a/res/layout/widgets_full_sheet_search_and_recommendations.xml
+++ /dev/null
@@ -1,61 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2021 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<com.android.launcher3.widget.picker.SearchAndRecommendationsView
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/search_and_recommendations_container"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:layout_marginBottom="16dp"
-    android:orientation="vertical">
-
-    <View
-        android:id="@+id/collapse_handle"
-        android:layout_width="match_parent"
-        android:layout_height="18dp"
-        android:elevation="0.1dp"
-        android:background="@drawable/bg_widgets_picker_handle"/>
-
-    <TextView
-        android:id="@+id/title"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:gravity="center_horizontal"
-        android:textSize="24sp"
-        android:layout_marginTop="24dp"
-        android:textColor="?android:attr/textColorSecondary"
-        android:text="@string/widget_button_text"/>
-
-    <FrameLayout
-        android:id="@+id/search_bar_container"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:elevation="0.1dp"
-        android:background="?android:attr/colorBackground"
-        android:paddingBottom="8dp"
-        android:clipToPadding="false">
-        <include layout="@layout/widgets_search_bar" />
-    </FrameLayout>
-
-    <com.android.launcher3.widget.picker.WidgetsRecommendationTableLayout
-        android:id="@+id/recommended_widget_table"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
-        android:layout_marginTop="8dp"
-        android:background="@drawable/widgets_recommendation_background"
-        android:paddingVertical="@dimen/recommended_widgets_table_vertical_padding"
-        android:visibility="gone" />
-</com.android.launcher3.widget.picker.SearchAndRecommendationsView>
diff --git a/res/layout/widgets_list_row_header.xml b/res/layout/widgets_list_row_header.xml
index 7f84050..8f0eae7 100644
--- a/res/layout/widgets_list_row_header.xml
+++ b/res/layout/widgets_list_row_header.xml
@@ -19,7 +19,6 @@
     android:id="@+id/widgets_list_header"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
     android:paddingVertical="@dimen/widget_list_header_view_vertical_padding"
     android:orientation="horizontal"
     launcher:appIconSize="48dp">
diff --git a/res/layout/widgets_personal_work_tabs.xml b/res/layout/widgets_personal_work_tabs.xml
deleted file mode 100644
index 532c422..0000000
--- a/res/layout/widgets_personal_work_tabs.xml
+++ /dev/null
@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2021 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
--->
-
-<com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/tabs"
-    android:layout_width="match_parent"
-    android:layout_height="@dimen/all_apps_header_pill_height"
-    android:gravity="center_horizontal"
-    android:orientation="horizontal"
-    android:layout_marginHorizontal="@dimen/widget_tabs_horizontal_margin"
-    style="@style/TextHeadline">
-
-    <Button
-        android:id="@+id/tab_personal"
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_marginEnd="@dimen/widget_tabs_button_horizontal_padding"
-        android:layout_marginVertical="@dimen/widget_apps_tabs_vertical_padding"
-        android:layout_weight="1"
-        android:background="@drawable/all_apps_tabs_background"
-        android:text="@string/widgets_full_sheet_personal_tab"
-        android:textColor="@color/all_apps_tab_text"
-        android:textSize="14sp"
-        style="?android:attr/borderlessButtonStyle" />
-
-    <Button
-        android:id="@+id/tab_work"
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_marginEnd="@dimen/widget_tabs_button_horizontal_padding"
-        android:layout_marginVertical="@dimen/widget_apps_tabs_vertical_padding"
-        android:layout_weight="1"
-        android:background="@drawable/all_apps_tabs_background"
-        android:text="@string/widgets_full_sheet_work_tab"
-        android:textColor="@color/all_apps_tab_text"
-        android:textSize="14sp"
-        style="?android:attr/borderlessButtonStyle" />
-</com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip>
\ No newline at end of file
diff --git a/res/layout/widgets_search_bar.xml b/res/layout/widgets_search_bar.xml
index cb27f4f..9178a75 100644
--- a/res/layout/widgets_search_bar.xml
+++ b/res/layout/widgets_search_bar.xml
@@ -6,7 +6,6 @@
     android:layout_height="wrap_content"
     android:orientation="horizontal"
     android:layout_marginTop="24dp"
-    android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin"
     android:background="@drawable/bg_widgets_searchbox">
 
     <com.android.launcher3.ExtendedEditText
diff --git a/res/layout/widgets_table_container.xml b/res/layout/widgets_table_container.xml
index ab470d8..ab96b1343 100644
--- a/res/layout/widgets_table_container.xml
+++ b/res/layout/widgets_table_container.xml
@@ -17,5 +17,4 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/widgets_table"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:layout_marginHorizontal="@dimen/widget_list_horizontal_margin" />
+    android:layout_height="wrap_content" />
diff --git a/res/values-sw600dp/dimens.xml b/res/values-sw600dp/dimens.xml
index 47a88f2..3727932 100644
--- a/res/values-sw600dp/dimens.xml
+++ b/res/values-sw600dp/dimens.xml
@@ -17,4 +17,7 @@
 <resources>
 <!-- DragController -->
     <dimen name="drag_flingToDeleteMinVelocity">-1000dp</dimen>
+
+<!-- Widgets pickers -->
+    <dimen name="widget_list_horizontal_margin">32dp</dimen>
 </resources>
diff --git a/res/values-v31/colors.xml b/res/values-v31/colors.xml
index c2ebeff..55cedf4 100644
--- a/res/values-v31/colors.xml
+++ b/res/values-v31/colors.xml
@@ -41,6 +41,8 @@
     <color name="wallpaper_popup_scrim">@android:color/system_neutral1_900</color>
 
     <color name="folder_dot_color">@android:color/system_accent2_50</color>
+    <color name="folder_pagination_color_light">@android:color/system_accent1_600</color>
+    <color name="folder_pagination_color_dark">@android:color/system_accent2_100</color>
 
     <color name="home_settings_header_accent">@android:color/system_accent1_600</color>
     <color name="home_settings_header_collapsed">@android:color/system_neutral1_100</color>
diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index 00cf31c..65b46cf 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -42,6 +42,7 @@
     <attr name="popupNotificationDotColor" format="color" />
 
     <attr name="folderDotColor" format="color" />
+    <attr name="folderPaginationColor" format="color" />
     <attr name="folderFillColor" format="color" />
     <attr name="folderIconRadius" format="float" />
     <attr name="folderIconBorderColor" format="color" />
@@ -148,9 +149,16 @@
 
         <attr name="dbFile" format="string" />
         <attr name="defaultLayoutId" format="reference" />
+        <attr name="defaultSplitDisplayLayoutId" format="reference" />
         <attr name="demoModeLayoutId" format="reference" />
         <attr name="isScalable" format="boolean" />
         <attr name="devicePaddingId" format="reference" />
+        <attr name="gridEnabled" format="integer" >
+            <!-- Enable on all devices; default value -->
+            <enum name="all_displays" value="0" />
+            <!-- Enable on single display devices only -->
+            <enum name="single_display" value="1" />
+        </attr>
 
     </declare-styleable>
 
@@ -176,11 +184,20 @@
         <attr name="borderSpacingDps" format="float" />
 
         <attr name="iconImageSize" format="float" />
-        <!-- landscapeIconSize defaults to iconSize, if not specified -->
+        <!-- landscapeIconSize defaults to iconImageSize, if not specified -->
         <attr name="landscapeIconSize" format="float" />
+        <!-- twoPanelPortraitIconSize defaults to iconImageSize, if not specified -->
+        <attr name="twoPanelPortraitIconSize" format="float" />
+        <!-- twoPanelLandscapeIconSize defaults to landscapeIconSize, if not specified -->
+        <attr name="twoPanelLandscapeIconSize" format="float" />
+
         <attr name="iconTextSize" format="float" />
         <!-- landscapeIconTextSize defaults to iconTextSize, if not specified -->
         <attr name="landscapeIconTextSize" format="float" />
+        <!-- twoPanelPortraitIconTextSize defaults to iconTextSize, if not specified -->
+        <attr name="twoPanelPortraitIconTextSize" format="float" />
+        <!-- twoPanelLandscapeIconTextSize defaults to landscapeIconTextSize, if not specified -->
+        <attr name="twoPanelLandscapeIconTextSize" format="float" />
 
         <!-- If set, this display option is used to determine the default grid -->
         <attr name="canBeDefault" format="boolean|integer" >
diff --git a/res/values/colors.xml b/res/values/colors.xml
index 1b68fb6..cc5c5a3 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -73,6 +73,8 @@
     <color name="folder_background_dark">#464746</color>
 
     <color name="folder_dot_color">?attr/colorPrimary</color>
+    <color name="folder_pagination_color_light">#ff006c5f</color>
+    <color name="folder_pagination_color_dark">#ffbfebe3</color>
 
     <color name="text_color_primary_dark">#FFFFFFFF</color>
     <color name="text_color_secondary_dark">#FFFFFFFF</color>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index f434644..86b4e71 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -29,7 +29,8 @@
     <dimen name="dynamic_grid_cell_layout_padding">5.5dp</dimen>
     <dimen name="dynamic_grid_cell_padding_x">8dp</dimen>
 
-    <dimen name="two_panel_home_side_padding">18dp</dimen>
+    <dimen name="two_panels_home_side_padding_landscape">36dp</dimen>
+    <dimen name="two_panels_home_side_padding_portrait">9dp</dimen>
 
     <!-- Hotseat -->
     <dimen name="dynamic_grid_hotseat_top_padding">8dp</dimen>
@@ -142,8 +143,7 @@
     <dimen name="widget_cell_font_size">14sp</dimen>
 
     <dimen name="widget_tabs_button_horizontal_padding">4dp</dimen>
-    <dimen name="widget_tabs_horizontal_margin">32dp</dimen>
-    <dimen name="widget_apps_header_pill_height">48dp</dimen>
+    <dimen name="widget_tabs_horizontal_padding">16dp</dimen>
     <dimen name="widget_apps_tabs_vertical_padding">6dp</dimen>
 
     <dimen name="recommended_widgets_table_vertical_padding">8dp</dimen>
@@ -177,8 +177,6 @@
     <dimen name="widget_picker_education_tip_max_width">308dp</dimen>
     <dimen name="widget_picker_education_tip_min_margin">4dp</dimen>
 
-    <dimen name="widget_picker_view_pager_top_padding">10dp</dimen>
-
     <!-- Padding applied to shortcut previews -->
     <dimen name="shortcut_preview_padding_left">0dp</dimen>
     <dimen name="shortcut_preview_padding_right">0dp</dimen>
@@ -196,6 +194,7 @@
     <dimen name="drop_target_text_size">16sp</dimen>
     <dimen name="drop_target_shadow_elevation">2dp</dimen>
     <dimen name="drop_target_bar_margin_horizontal">4dp</dimen>
+    <dimen name="drop_target_button_drawable_padding">8dp</dimen>
 
     <!-- the distance an icon must be dragged before button drop targets accept it -->
     <dimen name="drag_distanceThreshold">30dp</dimen>
@@ -312,16 +311,32 @@
 
 <!-- Taskbar related (placeholders to compile in Launcher3 without Quickstep) -->
     <dimen name="taskbar_size">0dp</dimen>
+    <dimen name="qsb_widget_height">0dp</dimen>
+    <dimen name="taskbar_icon_size">44dp</dimen>
+    <!-- Note that this applies to both sides of all icons, so visible space is double this. -->
+    <dimen name="taskbar_icon_spacing">8dp</dimen>
 
     <!-- Size of the maximum radius for the enforced rounded rectangles. -->
     <dimen name="enforced_rounded_corner_max_radius">16dp</dimen>
 
 <!-- Overview placeholder to compile in Launcer3 without Quickstep -->
     <dimen name="task_thumbnail_icon_size">0dp</dimen>
-    <dimen name="task_thumbnail_icon_size_grid">0dp</dimen>
+    <dimen name="task_thumbnail_icon_drawable_size">0dp</dimen>
+    <dimen name="task_thumbnail_icon_drawable_size_grid">0dp</dimen>
     <dimen name="overview_task_margin">0dp</dimen>
-    <dimen name="overview_actions_bottom_margin_gesture">0dp</dimen>
-    <dimen name="overview_actions_bottom_margin_three_button">0dp</dimen>
+    <dimen name="overview_task_margin_focused">0dp</dimen>
+    <dimen name="overview_task_margin_grid">0dp</dimen>
+    <dimen name="overview_actions_margin_gesture">0dp</dimen>
+    <dimen name="overview_actions_top_margin_gesture_grid_portrait">0dp</dimen>
+    <dimen name="overview_actions_bottom_margin_gesture_grid_portrait">0dp</dimen>
+    <dimen name="overview_actions_top_margin_gesture_grid_landscape">0dp</dimen>
+    <dimen name="overview_actions_bottom_margin_gesture_grid_landscape">0dp</dimen>
+    <dimen name="overview_actions_margin_three_button">0dp</dimen>
+    <dimen name="overview_grid_row_spacing_portrait">0dp</dimen>
+    <dimen name="overview_grid_row_spacing_landscape">0dp</dimen>
+    <dimen name="recents_page_spacing">0dp</dimen>
+    <dimen name="recents_page_spacing_grid">0dp</dimen>
+    <dimen name="split_placeholder_size">110dp</dimen>
 
 <!-- Workspace grid visualization parameters -->
     <dimen name="grid_visualization_rounding_radius">22dp</dimen>
diff --git a/res/values/id.xml b/res/values/id.xml
index 1709c59..ebc4075 100644
--- a/res/values/id.xml
+++ b/res/values/id.xml
@@ -17,7 +17,17 @@
 <resources>
     <item type="id" name="apps_list_view_work" />
     <item type="id" name="tag_widget_entry" />
+    <item type="id" name="view_type_widgets_space" />
     <item type="id" name="view_type_widgets_list" />
     <item type="id" name="view_type_widgets_header" />
     <item type="id" name="view_type_widgets_search_header" />
+
+    <!--  Do not change, must be kept in sync with sysui navbar button IDs for tests!  -->
+    <item type="id" name="home" />
+    <item type="id" name="recent_apps" />
+    <item type="id" name="back" />
+    <item type="id" name="ime_switcher" />
+    <item type="id" name="accessibility_button" />
+    <item type="id" name="rotate_suggestion" />
+    <!--  /Do not change, must be kept in sync with sysui navbar button IDs for tests!  -->
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index e4a245a..8ad4fcd 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -50,6 +50,7 @@
         <item name="workspaceStatusBarScrim">@drawable/workspace_bg</item>
         <item name="widgetsTheme">@style/WidgetContainerTheme</item>
         <item name="folderDotColor">@color/folder_dot_color</item>
+        <item name="folderPaginationColor">@color/folder_pagination_color_light</item>
         <item name="folderFillColor">@color/folder_background_light</item>
         <item name="folderIconBorderColor">?android:attr/colorPrimary</item>
         <item name="folderTextColor">@color/workspace_text_color_dark</item>
@@ -108,6 +109,7 @@
         <item name="popupShadeThird">@color/popup_shade_third_dark</item>
         <item name="widgetsTheme">@style/WidgetContainerTheme.Dark</item>
         <item name="folderDotColor">@color/folder_dot_color</item>
+        <item name="folderPaginationColor">@color/folder_pagination_color_dark</item>
         <item name="folderFillColor">@color/folder_background_dark</item>
         <item name="folderIconBorderColor">?android:attr/colorPrimary</item>
         <item name="folderTextColor">@color/workspace_text_color_light</item>
@@ -259,7 +261,7 @@
 
     <!-- Drop targets -->
     <style name="DropTargetButtonBase" parent="@android:style/TextAppearance.DeviceDefault">
-        <item name="android:drawablePadding">8dp</item>
+        <item name="android:drawablePadding">@dimen/drop_target_button_drawable_padding</item>
         <item name="android:padding">14dp</item>
         <item name="android:textColor">@color/drop_target_text</item>
         <item name="android:textSize">@dimen/drop_target_text_size</item>
diff --git a/res/xml/default_workspace_5x5.xml b/res/xml/default_workspace_5x5.xml
index ccdde2c..b4ac8f6 100644
--- a/res/xml/default_workspace_5x5.xml
+++ b/res/xml/default_workspace_5x5.xml
@@ -94,4 +94,5 @@
         <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MARKET;end" />
         <favorite launcher:uri="market://details?id=com.android.launcher" />
     </resolve>
+
 </favorites>
diff --git a/res/xml/default_workspace_splitdisplay_5x5.xml b/res/xml/default_workspace_splitdisplay_5x5.xml
new file mode 100644
index 0000000..162367b
--- /dev/null
+++ b/res/xml/default_workspace_splitdisplay_5x5.xml
@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<favorites xmlns:launcher="http://schemas.android.com/apk/res-auto/com.android.launcher3">
+
+    <!-- Hotseat (We use the screen as the position of the item in the hotseat) -->
+    <!-- Dialer, Messaging, [Maps/Music], Browser, Camera -->
+    <resolve
+        launcher:container="-101"
+        launcher:screen="0"
+        launcher:x="0"
+        launcher:y="0" >
+        <favorite launcher:uri="#Intent;action=android.intent.action.DIAL;end" />
+        <favorite launcher:uri="tel:123" />
+        <favorite launcher:uri="#Intent;action=android.intent.action.CALL_BUTTON;end" />
+    </resolve>
+
+    <resolve
+        launcher:container="-101"
+        launcher:screen="1"
+        launcher:x="1"
+        launcher:y="0" >
+        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MESSAGING;end" />
+        <favorite launcher:uri="sms:" />
+        <favorite launcher:uri="smsto:" />
+        <favorite launcher:uri="mms:" />
+        <favorite launcher:uri="mmsto:" />
+    </resolve>
+
+    <resolve
+        launcher:container="-101"
+        launcher:screen="2"
+        launcher:x="2"
+        launcher:y="0" >
+        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MAPS;end" />
+        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MUSIC;end" />
+    </resolve>
+
+    <resolve
+        launcher:container="-101"
+        launcher:screen="3"
+        launcher:x="3"
+        launcher:y="0" >
+        <favorite
+            launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_BROWSER;end" />
+        <favorite launcher:uri="http://www.example.com/" />
+    </resolve>
+
+    <resolve
+        launcher:container="-101"
+        launcher:screen="4"
+        launcher:x="4"
+        launcher:y="0" >
+        <favorite launcher:uri="#Intent;action=android.media.action.STILL_IMAGE_CAMERA;end" />
+        <favorite launcher:uri="#Intent;action=android.intent.action.CAMERA_BUTTON;end" />
+    </resolve>
+
+    <!-- Bottom row -->
+    <resolve
+        launcher:screen="0"
+        launcher:x="0"
+        launcher:y="-1" >
+	    <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_EMAIL;end" />
+	    <favorite launcher:uri="mailto:" />
+
+    </resolve>
+
+    <resolve
+        launcher:screen="0"
+        launcher:x="1"
+        launcher:y="-1" >
+	    <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_GALLERY;end" />
+	    <favorite launcher:uri="#Intent;type=images/*;end" />
+
+    </resolve>
+
+    <resolve
+        launcher:screen="0"
+        launcher:x="4"
+        launcher:y="-1" >
+        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MARKET;end" />
+        <favorite launcher:uri="market://details?id=com.android.launcher" />
+    </resolve>
+
+    <!-- Placeholder before we add page pairing in b/196376162 -->
+    <resolve
+        launcher:screen="1"
+        launcher:x="0"
+        launcher:y="-4" >
+        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_GALLERY;end" />
+        <favorite launcher:uri="#Intent;type=images/*;end" />
+    </resolve>
+
+</favorites>
diff --git a/res/xml/device_profiles.xml b/res/xml/device_profiles.xml
index 256999c..d8ee6f2 100644
--- a/res/xml/device_profiles.xml
+++ b/res/xml/device_profiles.xml
@@ -105,7 +105,8 @@
         launcher:numFolderColumns="4"
         launcher:numHotseatIcons="5"
         launcher:dbFile="launcher.db"
-        launcher:defaultLayoutId="@xml/default_workspace_5x5" >
+        launcher:defaultLayoutId="@xml/default_workspace_5x5"
+        launcher:defaultSplitDisplayLayoutId="@xml/default_workspace_splitdisplay_5x5" >
 
         <display-option
             launcher:name="Large Phone"
diff --git a/robolectric_tests/Android.bp b/robolectric_tests/Android.bp
index 9ed26ff..6473d00 100644
--- a/robolectric_tests/Android.bp
+++ b/robolectric_tests/Android.bp
@@ -40,7 +40,6 @@
     name: "LauncherRoboTests",
     srcs: [
         ":launcher3-robolectric-src",
-        ":launcher3-test-src-common",
     ],
     java_resources: [":launcher3-robolectric-resources"],
     static_libs: [
diff --git a/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java b/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java
index 34a8025..a397db5 100644
--- a/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java
+++ b/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java
@@ -76,7 +76,7 @@
         setupUserManager();
         setupBackupManager();
         mModelHelper = new LauncherModelHelper();
-        RestoreDbTask.setPending(RuntimeEnvironment.application, true);
+        RestoreDbTask.setPending(RuntimeEnvironment.application);
         mDb = mModelHelper.provider.getDb();
         mIdp = InvariantDeviceProfile.INSTANCE.get(RuntimeEnvironment.application);
     }
diff --git a/robolectric_tests/src/com/android/launcher3/model/GridBackupTableTest.java b/robolectric_tests/src/com/android/launcher3/model/GridBackupTableTest.java
deleted file mode 100644
index 56ce215..0000000
--- a/robolectric_tests/src/com/android/launcher3/model/GridBackupTableTest.java
+++ /dev/null
@@ -1,135 +0,0 @@
-package com.android.launcher3.model;
-
-
-import static android.database.DatabaseUtils.queryNumEntries;
-
-import static com.android.launcher3.LauncherSettings.Favorites.BACKUP_TABLE_NAME;
-import static com.android.launcher3.LauncherSettings.Favorites.TABLE_NAME;
-import static com.android.launcher3.provider.LauncherDbUtils.tableExists;
-import static com.android.launcher3.util.LauncherModelHelper.APP_ICON;
-import static com.android.launcher3.util.LauncherModelHelper.DESKTOP;
-import static com.android.launcher3.util.LauncherModelHelper.NO__ICON;
-import static com.android.launcher3.util.LauncherModelHelper.SHORTCUT;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.database.sqlite.SQLiteDatabase;
-import android.graphics.Point;
-
-import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.LauncherSettings.Settings;
-import com.android.launcher3.util.LauncherModelHelper;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-/**
- * Unit tests for {@link GridBackupTable}
- */
-@RunWith(RobolectricTestRunner.class)
-public class GridBackupTableTest {
-
-    private static final int BACKUP_ITEM_COUNT = 12;
-
-    private LauncherModelHelper mModelHelper;
-    private Context mContext;
-    private SQLiteDatabase mDb;
-
-    @Before
-    public void setUp() {
-        mModelHelper = new LauncherModelHelper();
-        mContext = RuntimeEnvironment.application;
-        mDb = mModelHelper.provider.getDb();
-
-        setupGridData();
-    }
-
-    private void setupGridData() {
-        mModelHelper.createGrid(new int[][][]{{
-                { APP_ICON, APP_ICON, SHORTCUT, SHORTCUT},
-                { SHORTCUT, SHORTCUT, NO__ICON, NO__ICON},
-                { NO__ICON, NO__ICON, SHORTCUT, SHORTCUT},
-                { APP_ICON, SHORTCUT, SHORTCUT, APP_ICON},
-        }});
-        assertEquals(BACKUP_ITEM_COUNT, queryNumEntries(mDb, TABLE_NAME));
-    }
-
-    @Test
-    public void backupTableCreated() {
-        GridBackupTable backupTable = new GridBackupTable(mContext, mDb, 4, 4, 4);
-        assertFalse(backupTable.backupOrRestoreAsNeeded());
-        Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
-
-        assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
-
-        // One extra entry for properties
-        assertEquals(BACKUP_ITEM_COUNT + 1, queryNumEntries(mDb, BACKUP_TABLE_NAME));
-    }
-
-    @Test
-    public void backupTableRestored() {
-        assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
-        Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
-
-        // Delete entries
-        mDb.delete(TABLE_NAME, null, null);
-        assertEquals(0, queryNumEntries(mDb, TABLE_NAME));
-
-        GridBackupTable backupTable = new GridBackupTable(mContext, mDb, 3, 3, 3);
-        assertTrue(backupTable.backupOrRestoreAsNeeded());
-
-        // Items have been restored
-        assertEquals(BACKUP_ITEM_COUNT, queryNumEntries(mDb, TABLE_NAME));
-
-        Point outSize = new Point();
-        assertEquals(4, backupTable.getRestoreHotseatAndGridSize(outSize));
-        assertEquals(4, outSize.x);
-        assertEquals(4, outSize.y);
-    }
-
-    @Test
-    public void backupTableRemovedOnAdd() {
-        assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
-        Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
-
-        assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
-
-        mModelHelper.addItem(1, 2, DESKTOP, 1, 1);
-        assertFalse(tableExists(mDb, BACKUP_TABLE_NAME));
-    }
-
-    @Test
-    public void backupTableRemovedOnDelete() {
-        assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
-        Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
-
-        assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
-
-        mContext.getContentResolver().delete(Favorites.CONTENT_URI, null, null);
-        assertFalse(tableExists(mDb, BACKUP_TABLE_NAME));
-    }
-
-    @Test
-    public void backupTableRetainedOnUpdate() {
-        assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
-        Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
-
-        assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
-
-        ContentValues values = new ContentValues();
-        values.put(Favorites.RANK, 4);
-        // Something was updated
-        assertTrue(mContext.getContentResolver()
-                .update(Favorites.CONTENT_URI, values, null, null) > 0);
-
-        // Backup table remains
-        assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
-    }
-}
diff --git a/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java b/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java
deleted file mode 100644
index d544a0b..0000000
--- a/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java
+++ /dev/null
@@ -1,373 +0,0 @@
-package com.android.launcher3.model;
-
-import static com.android.launcher3.model.GridSizeMigrationTask.getWorkspaceScreenIds;
-import static com.android.launcher3.util.LauncherModelHelper.APP_ICON;
-import static com.android.launcher3.util.LauncherModelHelper.HOTSEAT;
-import static com.android.launcher3.util.LauncherModelHelper.SHORTCUT;
-import static com.android.launcher3.util.LauncherModelHelper.TEST_PACKAGE;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-import android.content.Context;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.graphics.Point;
-
-import com.android.launcher3.InvariantDeviceProfile;
-import com.android.launcher3.LauncherSettings;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.model.GridSizeMigrationTask.MultiStepMigrationTask;
-import com.android.launcher3.util.IntArray;
-import com.android.launcher3.util.LauncherModelHelper;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-import java.util.HashSet;
-import java.util.LinkedList;
-
-/**
- * Unit tests for {@link GridSizeMigrationTask}
- */
-@RunWith(RobolectricTestRunner.class)
-public class GridSizeMigrationTaskTest {
-
-    private LauncherModelHelper mModelHelper;
-    private Context mContext;
-    private SQLiteDatabase mDb;
-
-    private HashSet<String> mValidPackages;
-    private InvariantDeviceProfile mIdp;
-
-    @Before
-    public void setUp() {
-        mModelHelper = new LauncherModelHelper();
-        mContext = RuntimeEnvironment.application;
-        mDb = mModelHelper.provider.getDb();
-
-        mValidPackages = new HashSet<>();
-        mValidPackages.add(TEST_PACKAGE);
-        mIdp = InvariantDeviceProfile.INSTANCE.get(mContext);
-    }
-
-    @Test
-    public void testHotseatMigration_apps_dropped() throws Exception {
-        int[] hotseatItems = {
-                mModelHelper.addItem(APP_ICON, 0, HOTSEAT, 0, 0),
-                mModelHelper.addItem(SHORTCUT, 1, HOTSEAT, 0, 0),
-                -1,
-                mModelHelper.addItem(SHORTCUT, 3, HOTSEAT, 0, 0),
-                mModelHelper.addItem(APP_ICON, 4, HOTSEAT, 0, 0),
-        };
-
-        mIdp.numDatabaseHotseatIcons = 3;
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false, 5, 3)
-                .migrateHotseat();
-        // First item is dropped as it has the least weight.
-        verifyHotseat(hotseatItems[1], hotseatItems[3], hotseatItems[4]);
-    }
-
-    @Test
-    public void testHotseatMigration_shortcuts_dropped() throws Exception {
-        int[] hotseatItems = {
-                mModelHelper.addItem(APP_ICON, 0, HOTSEAT, 0, 0),
-                mModelHelper.addItem(30, 1, HOTSEAT, 0, 0),
-                -1,
-                mModelHelper.addItem(SHORTCUT, 3, HOTSEAT, 0, 0),
-                mModelHelper.addItem(10, 4, HOTSEAT, 0, 0),
-        };
-
-        mIdp.numDatabaseHotseatIcons = 3;
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false, 5, 3)
-                .migrateHotseat();
-        // First item is dropped as it has the least weight.
-        verifyHotseat(hotseatItems[1], hotseatItems[3], hotseatItems[4]);
-    }
-
-    private void verifyHotseat(int... sortedIds) {
-        int screenId = 0;
-        int total = 0;
-
-        for (int id : sortedIds) {
-            Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
-                    new String[]{LauncherSettings.Favorites._ID},
-                    "container=-101 and screen=" + screenId, null, null, null);
-
-            if (id == -1) {
-                assertEquals(0, c.getCount());
-            } else {
-                assertEquals(1, c.getCount());
-                c.moveToNext();
-                assertEquals(id, c.getLong(0));
-                total ++;
-            }
-            c.close();
-
-            screenId++;
-        }
-
-        // Verify that not other entry exist in the DB.
-        Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
-                new String[]{LauncherSettings.Favorites._ID},
-                "container=-101", null, null, null);
-        assertEquals(total, c.getCount());
-        c.close();
-    }
-
-    @Test
-    public void testWorkspace_empty_row_column_removed() throws Exception {
-        int[][][] ids = mModelHelper.createGrid(new int[][][]{{
-                {  0,  0, -1,  1},
-                {  3,  1, -1,  4},
-                { -1, -1, -1, -1},
-                {  5,  2, -1,  6},
-        }});
-
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false,
-                new Point(4, 4), new Point(3, 3)).migrateWorkspace();
-
-        // Column 2 and row 2 got removed.
-        verifyWorkspace(new int[][][] {{
-                {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
-                {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
-                {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
-        }});
-    }
-
-    @Test
-    public void testWorkspace_new_screen_created() throws Exception {
-        int[][][] ids = mModelHelper.createGrid(new int[][][]{{
-                {  0,  0,  0,  1},
-                {  3,  1,  0,  4},
-                { -1, -1, -1, -1},
-                {  5,  2, -1,  6},
-        }});
-
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false,
-                new Point(4, 4), new Point(3, 3)).migrateWorkspace();
-
-        // Items in the second column get moved to new screen
-        verifyWorkspace(new int[][][] {{
-                {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
-                {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
-                {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
-        }, {
-                {ids[0][0][2], ids[0][1][2], -1},
-        }});
-    }
-
-    @Test
-    public void testWorkspace_items_merged_in_next_screen() throws Exception {
-        int[][][] ids = mModelHelper.createGrid(new int[][][]{{
-                {  0,  0,  0,  1},
-                {  3,  1,  0,  4},
-                { -1, -1, -1, -1},
-                {  5,  2, -1,  6},
-        },{
-                {  0,  0, -1,  1},
-                {  3,  1, -1,  4},
-        }});
-
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false,
-                new Point(4, 4), new Point(3, 3)).migrateWorkspace();
-
-        // Items in the second column of the first screen should get placed on the 3rd
-        // row of the second screen
-        verifyWorkspace(new int[][][] {{
-                {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
-                {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
-                {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
-        }, {
-                {ids[1][0][0], ids[1][0][1], ids[1][0][3]},
-                {ids[1][1][0], ids[1][1][1], ids[1][1][3]},
-                {ids[0][0][2], ids[0][1][2], -1},
-        }});
-    }
-
-    @Test
-    public void testWorkspace_items_not_merged_in_next_screen() throws Exception {
-        // First screen has 2 mItems that need to be moved, but second screen has only one
-        // empty space after migration (top-left corner)
-        int[][][] ids = mModelHelper.createGrid(new int[][][]{{
-                {  0,  0,  0,  1},
-                {  3,  1,  0,  4},
-                { -1, -1, -1, -1},
-                {  5,  2, -1,  6},
-        },{
-                { -1,  0, -1,  1},
-                {  3,  1, -1,  4},
-                { -1, -1, -1, -1},
-                {  5,  2, -1,  6},
-        }});
-
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false,
-                new Point(4, 4), new Point(3, 3)).migrateWorkspace();
-
-        // Items in the second column of the first screen should get placed on a new screen.
-        verifyWorkspace(new int[][][] {{
-                {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
-                {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
-                {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
-        }, {
-                {          -1, ids[1][0][1], ids[1][0][3]},
-                {ids[1][1][0], ids[1][1][1], ids[1][1][3]},
-                {ids[1][3][0], ids[1][3][1], ids[1][3][3]},
-        }, {
-                {ids[0][0][2], ids[0][1][2], -1},
-        }});
-    }
-
-    @Test
-    public void testWorkspace_first_row_blocked() throws Exception {
-        if (!FeatureFlags.QSB_ON_FIRST_SCREEN) {
-            return;
-        }
-        // The first screen has one item on the 4th column which needs moving, as the first row
-        // will be kept empty.
-        int[][][] ids = mModelHelper.createGrid(new int[][][]{{
-                { -1, -1, -1, -1},
-                {  3,  1,  7,  0},
-                {  8,  7,  7, -1},
-                {  5,  2,  7, -1},
-        }}, 0);
-
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false,
-                new Point(4, 4), new Point(3, 4)).migrateWorkspace();
-
-        // Items in the second column of the first screen should get placed on a new screen.
-        verifyWorkspace(new int[][][] {{
-                {          -1,           -1,           -1},
-                {ids[0][1][0], ids[0][1][1], ids[0][1][2]},
-                {ids[0][2][0], ids[0][2][1], ids[0][2][2]},
-                {ids[0][3][0], ids[0][3][1], ids[0][3][2]},
-        }, {
-                {ids[0][1][3]},
-        }});
-    }
-
-    @Test
-    public void testWorkspace_items_moved_to_empty_first_row() throws Exception {
-        if (!FeatureFlags.QSB_ON_FIRST_SCREEN) {
-            return;
-        }
-        // Items will get moved to the next screen to keep the first screen empty.
-        int[][][] ids = mModelHelper.createGrid(new int[][][]{{
-                { -1, -1, -1, -1},
-                {  0,  1,  0,  0},
-                {  8,  7,  7, -1},
-                {  5,  6,  7, -1},
-        }}, 0);
-
-        new GridSizeMigrationTask(mContext, mDb, mValidPackages, false,
-                new Point(4, 4), new Point(3, 3)).migrateWorkspace();
-
-        // Items in the second column of the first screen should get placed on a new screen.
-        verifyWorkspace(new int[][][] {{
-                {          -1,           -1,           -1},
-                {ids[0][2][0], ids[0][2][1], ids[0][2][2]},
-                {ids[0][3][0], ids[0][3][1], ids[0][3][2]},
-        }, {
-                {ids[0][1][1], ids[0][1][0], ids[0][1][2]},
-                {ids[0][1][3]},
-        }});
-    }
-
-    /**
-     * Verifies that the workspace mItems are arranged in the provided order.
-     * @param ids A 3d array where the first dimension represents the screen, and the rest two
-     *            represent the workspace grid.
-     */
-    private void verifyWorkspace(int[][][] ids) {
-        IntArray allScreens = getWorkspaceScreenIds(mDb, LauncherSettings.Favorites.TABLE_NAME);
-        assertEquals(ids.length, allScreens.size());
-        int total = 0;
-
-        for (int i = 0; i < ids.length; i++) {
-            int screenId = allScreens.get(i);
-            for (int y = 0; y < ids[i].length; y++) {
-                for (int x = 0; x < ids[i][y].length; x++) {
-                    int id = ids[i][y][x];
-
-                    Cursor c = mContext.getContentResolver().query(
-                            LauncherSettings.Favorites.CONTENT_URI,
-                            new String[]{LauncherSettings.Favorites._ID},
-                            "container=-100 and screen=" + screenId +
-                                    " and cellX=" + x + " and cellY=" + y, null, null, null);
-                    if (id == -1) {
-                        assertEquals(0, c.getCount());
-                    } else {
-                        assertEquals(1, c.getCount());
-                        c.moveToNext();
-                        assertEquals(String.format("Failed to verify item at %d %d, %d", i, y, x),
-                                id, c.getLong(0));
-                        total++;
-                    }
-                    c.close();
-                }
-            }
-        }
-
-        // Verify that not other entry exist in the DB.
-        Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
-                new String[]{LauncherSettings.Favorites._ID},
-                "container=-100", null, null, null);
-        assertEquals(total, c.getCount());
-        c.close();
-    }
-
-    @Test
-    public void testMultiStepMigration_small_to_large() throws Exception {
-        MultiStepMigrationTaskVerifier verifier = new MultiStepMigrationTaskVerifier();
-        verifier.migrate(new Point(3, 3), new Point(5, 5));
-        verifier.assertCompleted();
-    }
-
-    @Test
-    public void testMultiStepMigration_large_to_small() throws Exception {
-        MultiStepMigrationTaskVerifier verifier = new MultiStepMigrationTaskVerifier(
-                5, 5, 4, 4,
-                4, 4, 3, 4
-        );
-        verifier.migrate(new Point(5, 5), new Point(3, 4));
-        verifier.assertCompleted();
-    }
-
-    @Test
-    public void testMultiStepMigration_zig_zag() throws Exception {
-        MultiStepMigrationTaskVerifier verifier = new MultiStepMigrationTaskVerifier(
-                5, 7, 4, 7,
-                4, 7, 3, 7
-        );
-        verifier.migrate(new Point(5, 5), new Point(3, 7));
-        verifier.assertCompleted();
-    }
-
-    private static class MultiStepMigrationTaskVerifier extends MultiStepMigrationTask {
-
-        private final LinkedList<Point> mPoints;
-
-        public MultiStepMigrationTaskVerifier(int... points) {
-            super(null, null, null, false);
-
-            mPoints = new LinkedList<>();
-            for (int i = 0; i < points.length; i += 2) {
-                mPoints.add(new Point(points[i], points[i + 1]));
-            }
-        }
-
-        @Override
-        protected boolean runStepTask(Point sourceSize, Point nextSize) throws Exception {
-            assertEquals(sourceSize, mPoints.poll());
-            assertEquals(nextSize, mPoints.poll());
-            return false;
-        }
-
-        public void assertCompleted() {
-            assertTrue(mPoints.isEmpty());
-        }
-    }
-}
diff --git a/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java b/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java
index 8e49fae..87b0887 100644
--- a/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java
+++ b/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java
@@ -124,14 +124,12 @@
         mIdp.numColumns = 4;
         mIdp.numRows = 4;
         GridSizeMigrationTaskV2.DbReader srcReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages,
-                srcHotseatItems.length);
+                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages);
         GridSizeMigrationTaskV2.DbReader destReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages,
-                mIdp.numDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages);
         GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(mContext, mDb, srcReader,
                 destReader, mIdp.numDatabaseHotseatIcons, new Point(mIdp.numColumns, mIdp.numRows));
-        task.migrate();
+        task.migrate(mIdp);
 
         // Check hotseat items
         Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
@@ -204,14 +202,12 @@
         mIdp.numColumns = 4;
         mIdp.numRows = 4;
         GridSizeMigrationTaskV2.DbReader srcReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages,
-                numSrcDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages);
         GridSizeMigrationTaskV2.DbReader destReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages,
-                mIdp.numDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages);
         GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(mContext, mDb, srcReader,
                 destReader, mIdp.numDatabaseHotseatIcons, new Point(mIdp.numColumns, mIdp.numRows));
-        task.migrate();
+        task.migrate(mIdp);
 
         // Check hotseat items
         Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
@@ -247,19 +243,16 @@
                 mModelHelper.addItem(APP_ICON, 5, HOTSEAT, 0, 0, testPackage5, 5, TMP_CONTENT_URI),
         };
 
-        int numSrcDatabaseHotseatIcons = srcHotseatItems.length;
         mIdp.numDatabaseHotseatIcons = 4;
         mIdp.numColumns = 4;
         mIdp.numRows = 4;
         GridSizeMigrationTaskV2.DbReader srcReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages,
-                numSrcDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages);
         GridSizeMigrationTaskV2.DbReader destReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages,
-                mIdp.numDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages);
         GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(mContext, mDb, srcReader,
                 destReader, mIdp.numDatabaseHotseatIcons, new Point(mIdp.numColumns, mIdp.numRows));
-        task.migrate();
+        task.migrate(mIdp);
 
         // Check hotseat items
         Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
diff --git a/robolectric_tests/src/com/android/launcher3/model/ModelMultiCallbacksTest.java b/robolectric_tests/src/com/android/launcher3/model/ModelMultiCallbacksTest.java
index a2abfd5..4319355 100644
--- a/robolectric_tests/src/com/android/launcher3/model/ModelMultiCallbacksTest.java
+++ b/robolectric_tests/src/com/android/launcher3/model/ModelMultiCallbacksTest.java
@@ -26,16 +26,17 @@
 
 import android.os.Process;
 
-import com.android.launcher3.PagedView;
 import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.model.data.AppInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.shadows.ShadowLooperExecutor;
 import com.android.launcher3.util.Executors;
+import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.LauncherLayoutBuilder;
 import com.android.launcher3.util.LauncherModelHelper;
 import com.android.launcher3.util.LooperExecutor;
-import com.android.launcher3.util.ViewOnDrawExecutor;
+import com.android.launcher3.util.RunnableList;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -92,7 +93,7 @@
         // Add a new callback
         cb1.reset();
         MyCallbacks cb2 = spy(MyCallbacks.class);
-        cb2.mPageToBindSync = 2;
+        cb2.mPageToBindSync = IntSet.wrap(2);
         mModelHelper.getModel().addCallbacksAndLoad(cb2);
 
         waitForLoaderAndTempMainThread();
@@ -106,14 +107,14 @@
         // No effect on callbacks when removing an callback
         mModelHelper.getModel().removeCallbacks(cb2);
         waitForLoaderAndTempMainThread();
-        assertNull(cb1.mDeferredExecutor);
-        assertNull(cb2.mDeferredExecutor);
+        assertNull(cb1.mPendingTasks);
+        assertNull(cb2.mPendingTasks);
 
         // Reloading only loads registered callbacks
         mModelHelper.getModel().startLoader();
         waitForLoaderAndTempMainThread();
         cb1.verifySynchronouslyBound(3);
-        assertNull(cb2.mDeferredExecutor);
+        assertNull(cb2.mPendingTasks);
     }
 
     @Test
@@ -178,21 +179,17 @@
     private abstract static class MyCallbacks implements Callbacks {
 
         final List<ItemInfo> mItems = new ArrayList<>();
-        int mPageToBindSync = 0;
-        int mPageBoundSync = PagedView.INVALID_PAGE;
-        ViewOnDrawExecutor mDeferredExecutor;
+        IntSet mPageToBindSync = IntSet.wrap(0);
+        IntSet mPageBoundSync = new IntSet();
+        RunnableList mPendingTasks;
         AppInfo[] mAppInfos;
 
         MyCallbacks() { }
 
         @Override
-        public void onPageBoundSynchronously(int page) {
-            mPageBoundSync = page;
-        }
-
-        @Override
-        public void executeOnNextDraw(ViewOnDrawExecutor executor) {
-            mDeferredExecutor = executor;
+        public void onInitialBindComplete(IntSet boundPages, RunnableList pendingTasks) {
+            mPageBoundSync = boundPages;
+            mPendingTasks = pendingTasks;
         }
 
         @Override
@@ -206,26 +203,26 @@
         }
 
         @Override
-        public int getPageToBindSynchronously() {
+        public IntSet getPagesToBindSynchronously(IntArray orderedScreenIds) {
             return mPageToBindSync;
         }
 
         public void reset() {
             mItems.clear();
-            mPageBoundSync = PagedView.INVALID_PAGE;
-            mDeferredExecutor = null;
+            mPageBoundSync = new IntSet();
+            mPendingTasks = null;
             mAppInfos = null;
         }
 
         public void verifySynchronouslyBound(int totalItems) {
             // Verify that the requested page is bound synchronously
-            assertEquals(mPageBoundSync, mPageToBindSync);
+            assertEquals(mPageToBindSync, mPageBoundSync);
             assertEquals(mItems.size(), 1);
-            assertEquals(mItems.get(0).screenId, mPageBoundSync);
-            assertNotNull(mDeferredExecutor);
+            assertEquals(IntSet.wrap(mItems.get(0).screenId), mPageBoundSync);
+            assertNotNull(mPendingTasks);
 
             // Verify that all other pages are bound properly
-            mDeferredExecutor.runAllTasks();
+            mPendingTasks.executeAllAndDestroy();
             assertEquals(mItems.size(), totalItems);
         }
 
diff --git a/robolectric_tests/src/com/android/launcher3/util/LauncherUIHelper.java b/robolectric_tests/src/com/android/launcher3/util/LauncherUIHelper.java
index fdddab4..caad40e 100644
--- a/robolectric_tests/src/com/android/launcher3/util/LauncherUIHelper.java
+++ b/robolectric_tests/src/com/android/launcher3/util/LauncherUIHelper.java
@@ -81,7 +81,7 @@
         doLayout(launcher);
         ViewOnDrawExecutor executor = ReflectionHelpers.getField(launcher, "mPendingExecutor");
         if (executor != null) {
-            executor.runAllTasks();
+            executor.markCompleted();
         }
         return launcher;
     }
diff --git a/robolectric_tests/src/com/android/launcher3/widget/CachingWidgetPreviewLoaderTest.java b/robolectric_tests/src/com/android/launcher3/widget/CachingWidgetPreviewLoaderTest.java
deleted file mode 100644
index 1090d1e..0000000
--- a/robolectric_tests/src/com/android/launcher3/widget/CachingWidgetPreviewLoaderTest.java
+++ /dev/null
@@ -1,409 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.widget;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.eq;
-import static org.mockito.Mockito.reset;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.verifyZeroInteractions;
-import static org.mockito.Mockito.when;
-
-import android.content.ComponentName;
-import android.graphics.Bitmap;
-import android.os.CancellationSignal;
-import android.os.UserHandle;
-import android.util.Size;
-
-import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.InvariantDeviceProfile;
-import com.android.launcher3.icons.IconCache;
-import com.android.launcher3.model.WidgetItem;
-import com.android.launcher3.testing.TestActivity;
-import com.android.launcher3.widget.WidgetPreviewLoader.WidgetPreviewLoadedCallback;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Captor;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
-import org.robolectric.Robolectric;
-import org.robolectric.RobolectricTestRunner;
-
-import java.util.Arrays;
-import java.util.Collections;
-
-@RunWith(RobolectricTestRunner.class)
-public class CachingWidgetPreviewLoaderTest {
-    private final Size SIZE_10_10 = new Size(10, 10);
-    private final Size SIZE_20_20 = new Size(20, 20);
-    private static final String TEST_PACKAGE = "com.example.test";
-    private final ComponentName TEST_PROVIDER =
-            new ComponentName(TEST_PACKAGE, ".WidgetProvider");
-    private final ComponentName TEST_PROVIDER2 =
-            new ComponentName(TEST_PACKAGE, ".WidgetProvider2");
-    private final Bitmap BITMAP = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
-    private final Bitmap BITMAP2 = Bitmap.createBitmap(20, 20, Bitmap.Config.ARGB_8888);
-
-
-    @Mock private CancellationSignal mCancellationSignal;
-    @Mock private WidgetPreviewLoader mDelegate;
-    @Mock private IconCache mIconCache;
-    @Mock private DeviceProfile mDeviceProfile;
-    @Mock private LauncherAppWidgetProviderInfo mProviderInfo;
-    @Mock private LauncherAppWidgetProviderInfo mProviderInfo2;
-    @Mock private WidgetPreviewLoadedCallback mPreviewLoadedCallback;
-    @Mock private WidgetPreviewLoadedCallback mPreviewLoadedCallback2;
-    @Captor private ArgumentCaptor<WidgetPreviewLoadedCallback> mCallbackCaptor;
-
-    private TestActivity mTestActivity;
-    private CachingWidgetPreviewLoader mLoader;
-    private WidgetItem mWidgetItem;
-    private WidgetItem mWidgetItem2;
-
-    @Before
-    public void setUp() {
-        MockitoAnnotations.initMocks(this);
-        mLoader = new CachingWidgetPreviewLoader(mDelegate);
-
-        mTestActivity = Robolectric.buildActivity(TestActivity.class).setup().get();
-        mTestActivity.setDeviceProfile(mDeviceProfile);
-
-        when(mDelegate.loadPreview(any(), any(), any(), any())).thenReturn(mCancellationSignal);
-
-        mProviderInfo.provider = TEST_PROVIDER;
-        when(mProviderInfo.getProfile()).thenReturn(new UserHandle(0));
-
-        mProviderInfo2.provider = TEST_PROVIDER2;
-        when(mProviderInfo2.getProfile()).thenReturn(new UserHandle(0));
-
-        InvariantDeviceProfile testProfile = new InvariantDeviceProfile();
-        testProfile.numRows = 5;
-        testProfile.numColumns = 5;
-
-        mWidgetItem = new WidgetItem(mProviderInfo, testProfile, mIconCache);
-        mWidgetItem2 = new WidgetItem(mProviderInfo2, testProfile, mIconCache);
-    }
-
-    @Test
-    public void getPreview_notInCache_shouldReturnNull() {
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isNull();
-    }
-
-    @Test
-    public void getPreview_notInCache_shouldNotCallDelegate() {
-        mLoader.getPreview(mWidgetItem, SIZE_10_10);
-
-        verifyZeroInteractions(mDelegate);
-    }
-
-    @Test
-    public void getPreview_inCache_shouldReturnCachedBitmap() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isEqualTo(BITMAP);
-    }
-
-    @Test
-    public void getPreview_otherSizeInCache_shouldReturnNull() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_20_20)).isNull();
-    }
-
-    @Test
-    public void getPreview_otherItemInCache_shouldReturnNull() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-
-        assertThat(mLoader.getPreview(mWidgetItem2, SIZE_10_10)).isNull();
-    }
-
-    @Test
-    public void getPreview_shouldStoreMultipleSizesPerItem() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        loadPreviewIntoCache(mWidgetItem, SIZE_20_20, BITMAP2);
-
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isEqualTo(BITMAP);
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_20_20)).isEqualTo(BITMAP2);
-    }
-
-    @Test
-    public void loadPreview_notInCache_shouldStartLoading() {
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-
-        verify(mDelegate).loadPreview(eq(mTestActivity), eq(mWidgetItem), eq(SIZE_10_10), any());
-        verifyZeroInteractions(mPreviewLoadedCallback);
-    }
-
-    @Test
-    public void loadPreview_thenLoaded_shouldCallBack() {
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        verify(mDelegate).loadPreview(any(), any(), any(), mCallbackCaptor.capture());
-        WidgetPreviewLoadedCallback loaderCallback = mCallbackCaptor.getValue();
-
-        loaderCallback.onPreviewLoaded(BITMAP);
-
-        verify(mPreviewLoadedCallback).onPreviewLoaded(BITMAP);
-    }
-
-    @Test
-    public void loadPreview_thenCancelled_shouldCancelDelegateRequest() {
-        CancellationSignal cancellationSignal =
-                mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-
-        cancellationSignal.cancel();
-
-        verify(mCancellationSignal).cancel();
-        verifyZeroInteractions(mPreviewLoadedCallback);
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isNull();
-    }
-
-    @Test
-    public void loadPreview_thenCancelled_otherCallListening_shouldNotCancelDelegateRequest() {
-        CancellationSignal cancellationSignal1 =
-                mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback2);
-
-        cancellationSignal1.cancel();
-
-        verifyZeroInteractions(mCancellationSignal);
-    }
-
-    @Test
-    public void loadPreview_thenCancelled_otherCallListening_loaded_shouldCallBackToNonCancelled() {
-        CancellationSignal cancellationSignal1 =
-                mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback2);
-        verify(mDelegate).loadPreview(any(), any(), any(), mCallbackCaptor.capture());
-        WidgetPreviewLoadedCallback loaderCallback = mCallbackCaptor.getValue();
-
-        cancellationSignal1.cancel();
-        loaderCallback.onPreviewLoaded(BITMAP);
-
-        verifyZeroInteractions(mPreviewLoadedCallback);
-        verify(mPreviewLoadedCallback2).onPreviewLoaded(BITMAP);
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isEqualTo(BITMAP);
-    }
-
-    @Test
-    public void loadPreview_thenCancelled_bothCallsCancelled_shouldCancelDelegateRequest() {
-        CancellationSignal cancellationSignal1 =
-                mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        CancellationSignal cancellationSignal2 =
-                mLoader.loadPreview(
-                        mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback2);
-
-        cancellationSignal1.cancel();
-        cancellationSignal2.cancel();
-
-        verify(mCancellationSignal).cancel();
-        verifyZeroInteractions(mPreviewLoadedCallback);
-        verifyZeroInteractions(mPreviewLoadedCallback2);
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isNull();
-    }
-
-    @Test
-    public void loadPreview_multipleCallbacks_shouldOnlyCallDelegateOnce() {
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback2);
-
-        verify(mDelegate).loadPreview(any(), any(), any(), any());
-    }
-
-    @Test
-    public void loadPreview_multipleCallbacks_shouldForwardResultToEachCallback() {
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback2);
-
-        verify(mDelegate).loadPreview(any(), any(), any(), mCallbackCaptor.capture());
-        WidgetPreviewLoadedCallback loaderCallback = mCallbackCaptor.getValue();
-
-        loaderCallback.onPreviewLoaded(BITMAP);
-
-        verify(mPreviewLoadedCallback).onPreviewLoaded(BITMAP);
-        verify(mPreviewLoadedCallback2).onPreviewLoaded(BITMAP);
-    }
-
-    @Test
-    public void loadPreview_inCache_shouldCallBackImmediately() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        reset(mDelegate);
-
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-
-        verify(mPreviewLoadedCallback).onPreviewLoaded(BITMAP);
-        verifyZeroInteractions(mDelegate);
-    }
-
-    @Test
-    public void loadPreview_thenLoaded_thenCancelled_shouldNotRemovePreviewFromCache() {
-        CancellationSignal cancellationSignal =
-                mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-        verify(mDelegate).loadPreview(any(), any(), any(), mCallbackCaptor.capture());
-        WidgetPreviewLoadedCallback loaderCallback = mCallbackCaptor.getValue();
-        loaderCallback.onPreviewLoaded(BITMAP);
-
-        cancellationSignal.cancel();
-
-        assertThat(mLoader.getPreview(mWidgetItem, SIZE_10_10)).isEqualTo(BITMAP);
-    }
-
-    @Test
-    public void isPreviewLoaded_notLoaded_shouldReturnFalse() {
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void isPreviewLoaded_otherSizeLoaded_shouldReturnFalse() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_20_20, BITMAP);
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void isPreviewLoaded_otherItemLoaded_shouldReturnFalse() {
-        loadPreviewIntoCache(mWidgetItem2, SIZE_10_10, BITMAP);
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void isPreviewLoaded_loaded_shouldReturnTrue() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isTrue();
-    }
-
-    @Test
-    public void clearPreviews_notInCache_shouldBeNoOp() {
-        mLoader.clearPreviews(Collections.singletonList(mWidgetItem));
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void clearPreviews_inCache_shouldRemovePreview() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-
-        mLoader.clearPreviews(Collections.singletonList(mWidgetItem));
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void clearPreviews_inCache_multipleSizes_shouldRemoveAllSizes() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        loadPreviewIntoCache(mWidgetItem, SIZE_20_20, BITMAP);
-
-        mLoader.clearPreviews(Collections.singletonList(mWidgetItem));
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_20_20)).isFalse();
-    }
-
-    @Test
-    public void clearPreviews_inCache_otherItems_shouldOnlyRemoveSpecifiedItems() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        loadPreviewIntoCache(mWidgetItem2, SIZE_10_10, BITMAP);
-
-        mLoader.clearPreviews(Collections.singletonList(mWidgetItem));
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem2, SIZE_10_10)).isTrue();
-    }
-
-    @Test
-    public void clearPreviews_inCache_otherItems_shouldRemoveAllSpecifiedItems() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        loadPreviewIntoCache(mWidgetItem2, SIZE_10_10, BITMAP);
-
-        mLoader.clearPreviews(Arrays.asList(mWidgetItem, mWidgetItem2));
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem2, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void clearPreviews_loading_shouldCancelLoad() {
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-
-        mLoader.clearPreviews(Collections.singletonList(mWidgetItem));
-
-        verify(mCancellationSignal).cancel();
-    }
-
-    @Test
-    public void clearAll_cacheEmpty_shouldBeNoOp() {
-        mLoader.clearAll();
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void clearAll_inCache_shouldRemovePreview() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-
-        mLoader.clearAll();
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-    }
-
-    @Test
-    public void clearAll_inCache_multipleSizes_shouldRemoveAllSizes() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        loadPreviewIntoCache(mWidgetItem, SIZE_20_20, BITMAP);
-
-        mLoader.clearAll();
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_20_20)).isFalse();
-    }
-
-    @Test
-    public void clearAll_inCache_multipleItems_shouldRemoveAll() {
-        loadPreviewIntoCache(mWidgetItem, SIZE_10_10, BITMAP);
-        loadPreviewIntoCache(mWidgetItem, SIZE_20_20, BITMAP);
-        loadPreviewIntoCache(mWidgetItem2, SIZE_20_20, BITMAP);
-
-        mLoader.clearAll();
-
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_10_10)).isFalse();
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem, SIZE_20_20)).isFalse();
-        assertThat(mLoader.isPreviewLoaded(mWidgetItem2, SIZE_20_20)).isFalse();
-    }
-
-    @Test
-    public void clearAll_loading_shouldCancelLoad() {
-        mLoader.loadPreview(mTestActivity, mWidgetItem, SIZE_10_10, mPreviewLoadedCallback);
-
-        mLoader.clearAll();
-
-        verify(mCancellationSignal).cancel();
-    }
-
-    private void loadPreviewIntoCache(WidgetItem widgetItem, Size size, Bitmap bitmap) {
-        reset(mDelegate);
-        mLoader.loadPreview(mTestActivity, widgetItem, size, ignored -> {});
-        verify(mDelegate).loadPreview(any(), any(), any(), mCallbackCaptor.capture());
-        WidgetPreviewLoadedCallback loaderCallback = mCallbackCaptor.getValue();
-
-        loaderCallback.onPreviewLoaded(bitmap);
-    }
-}
diff --git a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListAdapterTest.java b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListAdapterTest.java
index c730fc0..12aac8b 100644
--- a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListAdapterTest.java
+++ b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListAdapterTest.java
@@ -39,7 +39,6 @@
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.model.data.PackageItemInfo;
 import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.widget.DatabaseWidgetPreviewLoader;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 import com.android.launcher3.widget.model.WidgetsListContentEntry;
@@ -64,7 +63,6 @@
     private static final String TEST_PACKAGE_PLACEHOLDER = "com.google.test";
 
     @Mock private LayoutInflater mMockLayoutInflater;
-    @Mock private DatabaseWidgetPreviewLoader mMockWidgetCache;
     @Mock private RecyclerView.AdapterDataObserver mListener;
     @Mock private IconCache mIconCache;
 
@@ -81,8 +79,8 @@
         mTestProfile.numRows = 5;
         mTestProfile.numColumns = 5;
         mUserHandle = Process.myUserHandle();
-        mAdapter = new WidgetsListAdapter(mContext, mMockLayoutInflater, mMockWidgetCache,
-                mIconCache, null, null);
+        mAdapter = new WidgetsListAdapter(mContext, mMockLayoutInflater,
+                mIconCache, () -> 0, null, null);
         mAdapter.registerAdapterDataObserver(mListener);
 
         doAnswer(invocation -> ((ComponentWithLabel) invocation.getArgument(0))
diff --git a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinderTest.java b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinderTest.java
index 81b0c5f..fa000c0 100644
--- a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinderTest.java
+++ b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinderTest.java
@@ -23,6 +23,8 @@
 import static org.mockito.Mockito.verify;
 import static org.robolectric.Shadows.shadowOf;
 
+import static java.util.Collections.EMPTY_LIST;
+
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.ComponentName;
 import android.content.Context;
@@ -41,7 +43,6 @@
 import com.android.launcher3.model.data.PackageItemInfo;
 import com.android.launcher3.testing.TestActivity;
 import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.widget.DatabaseWidgetPreviewLoader;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.model.WidgetsListHeaderEntry;
 
@@ -79,8 +80,6 @@
     @Mock
     private DeviceProfile mDeviceProfile;
     @Mock
-    private DatabaseWidgetPreviewLoader mWidgetPreviewLoader;
-    @Mock
     private OnHeaderClickListener mOnHeaderClickListener;
 
     @Before
@@ -99,18 +98,10 @@
             ComponentWithLabel componentWithLabel = (ComponentWithLabel) invocation.getArgument(0);
             return componentWithLabel.getComponent().getShortClassName();
         }).when(mIconCache).getTitleNoCache(any());
-
-        WidgetsListAdapter widgetsListAdapter = new WidgetsListAdapter(mContext,
-                LayoutInflater.from(mTestActivity),
-                mWidgetPreviewLoader,
-                mIconCache,
-                /* iconClickListener= */ view -> {},
-                /* iconLongClickListener= */ view -> false);
         mViewHolderBinder = new WidgetsListHeaderViewHolderBinder(
                 LayoutInflater.from(mTestActivity),
                 mOnHeaderClickListener,
-                new WidgetsListDrawableFactory(mTestActivity),
-                widgetsListAdapter);
+                new WidgetsListDrawableFactory(mTestActivity));
     }
 
     @After
@@ -127,7 +118,7 @@
                 APP_NAME,
                 TEST_PACKAGE,
                 /* numOfWidgets= */ 3);
-        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0);
+        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0, EMPTY_LIST);
 
         TextView appTitle = widgetsListHeader.findViewById(R.id.app_title);
         TextView appSubtitle = widgetsListHeader.findViewById(R.id.app_subtitle);
@@ -145,7 +136,7 @@
                 TEST_PACKAGE,
                 /* numOfWidgets= */ 3);
 
-        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0);
+        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0, EMPTY_LIST);
         widgetsListHeader.callOnClick();
 
         verify(mOnHeaderClickListener).onHeaderClicked(eq(true),
diff --git a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinderTest.java b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinderTest.java
index a0ba7c3..b18c8b7 100644
--- a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinderTest.java
+++ b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinderTest.java
@@ -23,6 +23,8 @@
 import static org.mockito.Mockito.verify;
 import static org.robolectric.Shadows.shadowOf;
 
+import static java.util.Collections.EMPTY_LIST;
+
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.ComponentName;
 import android.content.Context;
@@ -41,7 +43,6 @@
 import com.android.launcher3.model.data.PackageItemInfo;
 import com.android.launcher3.testing.TestActivity;
 import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.widget.DatabaseWidgetPreviewLoader;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.model.WidgetsListSearchHeaderEntry;
 
@@ -79,8 +80,6 @@
     @Mock
     private DeviceProfile mDeviceProfile;
     @Mock
-    private DatabaseWidgetPreviewLoader mWidgetPreviewLoader;
-    @Mock
     private OnHeaderClickListener mOnHeaderClickListener;
 
     @Before
@@ -99,18 +98,10 @@
             ComponentWithLabel componentWithLabel = (ComponentWithLabel) invocation.getArgument(0);
             return componentWithLabel.getComponent().getShortClassName();
         }).when(mIconCache).getTitleNoCache(any());
-
-        WidgetsListAdapter widgetsListAdapter = new WidgetsListAdapter(mContext,
-                LayoutInflater.from(mTestActivity),
-                mWidgetPreviewLoader,
-                mIconCache,
-                /* iconClickListener= */ view -> {},
-                /* iconLongClickListener= */ view -> false);
         mViewHolderBinder = new WidgetsListSearchHeaderViewHolderBinder(
                 LayoutInflater.from(mTestActivity),
                 mOnHeaderClickListener,
-                new WidgetsListDrawableFactory(mTestActivity),
-                widgetsListAdapter);
+                new WidgetsListDrawableFactory(mTestActivity));
     }
 
     @After
@@ -127,7 +118,7 @@
                 APP_NAME,
                 TEST_PACKAGE,
                 /* numOfWidgets= */ 3);
-        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0);
+        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0, EMPTY_LIST);
 
         TextView appTitle = widgetsListHeader.findViewById(R.id.app_title);
         TextView appSubtitle = widgetsListHeader.findViewById(R.id.app_subtitle);
@@ -146,7 +137,7 @@
                 TEST_PACKAGE,
                 /* numOfWidgets= */ 3);
 
-        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0);
+        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0, EMPTY_LIST);
         widgetsListHeader.callOnClick();
 
         verify(mOnHeaderClickListener).onHeaderClicked(eq(true),
diff --git a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinderTest.java b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinderTest.java
index 8f9d132..cb38c6f 100644
--- a/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinderTest.java
+++ b/robolectric_tests/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinderTest.java
@@ -23,6 +23,8 @@
 import static org.mockito.Mockito.doAnswer;
 import static org.robolectric.Shadows.shadowOf;
 
+import static java.util.Collections.EMPTY_LIST;
+
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.ComponentName;
 import android.content.Context;
@@ -44,7 +46,6 @@
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.model.data.PackageItemInfo;
 import com.android.launcher3.testing.TestActivity;
-import com.android.launcher3.widget.CachingWidgetPreviewLoader;
 import com.android.launcher3.widget.DatabaseWidgetPreviewLoader;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.WidgetCell;
@@ -107,19 +108,11 @@
             return componentWithLabel.getComponent().getShortClassName();
         }).when(mIconCache).getTitleNoCache(any());
 
-        WidgetsListAdapter widgetsListAdapter = new WidgetsListAdapter(mContext,
-                LayoutInflater.from(mTestActivity),
-                mWidgetPreviewLoader,
-                mIconCache,
-                /* iconClickListener= */ view -> {},
-                /* iconLongClickListener= */ view -> false);
         mViewHolderBinder = new WidgetsListTableViewHolderBinder(
                 LayoutInflater.from(mTestActivity),
                 mOnIconClickListener,
                 mOnLongClickListener,
-                new CachingWidgetPreviewLoader(mWidgetPreviewLoader),
-                new WidgetsListDrawableFactory(mTestActivity),
-                widgetsListAdapter);
+                new WidgetsListDrawableFactory(mTestActivity));
     }
 
     @After
@@ -135,13 +128,13 @@
                 APP_NAME,
                 TEST_PACKAGE,
                 /* numOfWidgets= */ 3);
-        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0);
+        mViewHolderBinder.bindViewHolder(viewHolder, entry, /* position= */ 0, EMPTY_LIST);
         shadowOf(getMainLooper()).idle();
 
         // THEN the table container has one row, which contains 3 widgets.
         // View:  .SampleWidget0 | .SampleWidget1 | .SampleWidget2
-        assertThat(viewHolder.mTableContainer.getChildCount()).isEqualTo(1);
-        TableRow row = (TableRow) viewHolder.mTableContainer.getChildAt(0);
+        assertThat(viewHolder.tableContainer.getChildCount()).isEqualTo(1);
+        TableRow row = (TableRow) viewHolder.tableContainer.getChildAt(0);
         assertThat(row.getChildCount()).isEqualTo(3);
         // Widget 0 label is .SampleWidget0.
         assertWidgetCellWithLabel(row.getChildAt(0), ".SampleWidget0");
diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 4979b40..e080537 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -64,7 +64,8 @@
             TYPE_OPTIONS_POPUP,
             TYPE_ICON_SURFACE,
             TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP,
-            TYPE_WIDGETS_EDUCATION_DIALOG
+            TYPE_WIDGETS_EDUCATION_DIALOG,
+            TYPE_TASKBAR_EDUCATION_DIALOG
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface FloatingViewType {}
@@ -87,18 +88,20 @@
 
     public static final int TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP = 1 << 14;
     public static final int TYPE_WIDGETS_EDUCATION_DIALOG = 1 << 15;
+    public static final int TYPE_TASKBAR_EDUCATION_DIALOG = 1 << 16;
 
     public static final int TYPE_ALL = TYPE_FOLDER | TYPE_ACTION_POPUP
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_WIDGETS_FULL_SHEET
             | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE | TYPE_TASK_MENU
             | TYPE_OPTIONS_POPUP | TYPE_SNACKBAR | TYPE_LISTENER | TYPE_ALL_APPS_EDU
             | TYPE_ICON_SURFACE | TYPE_DRAG_DROP_POPUP | TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP
-            | TYPE_WIDGETS_EDUCATION_DIALOG;
+            | TYPE_WIDGETS_EDUCATION_DIALOG | TYPE_TASKBAR_EDUCATION_DIALOG;
 
     // Type of popups which should be kept open during launcher rebind
     public static final int TYPE_REBIND_SAFE = TYPE_WIDGETS_FULL_SHEET
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE
-            | TYPE_ALL_APPS_EDU | TYPE_ICON_SURFACE | TYPE_WIDGETS_EDUCATION_DIALOG;
+            | TYPE_ALL_APPS_EDU | TYPE_ICON_SURFACE | TYPE_WIDGETS_EDUCATION_DIALOG
+            | TYPE_TASKBAR_EDUCATION_DIALOG;
 
     // Usually we show the back button when a floating view is open. Instead, hide for these types.
     public static final int TYPE_HIDE_BACK_BUTTON = TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index ddbd425..353e52b 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -90,6 +90,8 @@
     private final PointF mTranslationForReorderBounce = new PointF(0, 0);
     private final PointF mTranslationForReorderPreview = new PointF(0, 0);
 
+    private final PointF mTranslationForMoveFromCenterAnimation = new PointF(0, 0);
+
     private float mScaleForReorderBounce = 1f;
 
     private static final Property<BubbleTextView, Float> DOT_SCALE_PROPERTY
@@ -321,7 +323,8 @@
 
     @UiThread
     protected void applyIconAndLabel(ItemInfoWithIcon info) {
-        boolean useTheme = mDisplay == DISPLAY_WORKSPACE || mDisplay == DISPLAY_FOLDER;
+        boolean useTheme = mDisplay == DISPLAY_WORKSPACE || mDisplay == DISPLAY_FOLDER
+                || mDisplay == DISPLAY_TASKBAR;
         FastBitmapDrawable iconDrawable = info.newIcon(getContext(), useTheme);
         mDotParams.color = IconPalette.getMutedColor(iconDrawable.getIconColor(), 0.54f);
 
@@ -407,7 +410,7 @@
         }
     }
 
-    void clearPressedBackground() {
+    public void clearPressedBackground() {
         setPressed(false);
         setStayPressed(false);
     }
@@ -799,8 +802,10 @@
     }
 
     private void updateTranslation() {
-        super.setTranslationX(mTranslationForReorderBounce.x + mTranslationForReorderPreview.x);
-        super.setTranslationY(mTranslationForReorderBounce.y + mTranslationForReorderPreview.y);
+        super.setTranslationX(mTranslationForReorderBounce.x + mTranslationForReorderPreview.x
+                + mTranslationForMoveFromCenterAnimation.x);
+        super.setTranslationY(mTranslationForReorderBounce.y + mTranslationForReorderPreview.y
+                + mTranslationForMoveFromCenterAnimation.y);
     }
 
     public void setReorderBounceOffset(float x, float y) {
@@ -833,6 +838,11 @@
         return mScaleForReorderBounce;
     }
 
+    public void setTranslationForMoveFromCenterAnimation(float x, float y) {
+        mTranslationForMoveFromCenterAnimation.set(x, y);
+        updateTranslation();
+    }
+
     public View getView() {
         return this;
     }
@@ -853,8 +863,9 @@
         switch (display) {
             case DISPLAY_ALL_APPS:
                 return grid.allAppsIconSizePx;
-            case DISPLAY_WORKSPACE:
             case DISPLAY_FOLDER:
+                return grid.folderChildIconSizePx;
+            case DISPLAY_WORKSPACE:
             default:
                 return grid.iconSizePx;
         }
diff --git a/src/com/android/launcher3/ButtonDropTarget.java b/src/com/android/launcher3/ButtonDropTarget.java
index 61b5564..477dcf8 100644
--- a/src/com/android/launcher3/ButtonDropTarget.java
+++ b/src/com/android/launcher3/ButtonDropTarget.java
@@ -66,6 +66,8 @@
     private final int mDragDistanceThreshold;
     /** The size of the drawable shown in the drop target. */
     private final int mDrawableSize;
+    /** The padding, in pixels, between the text and drawable. */
+    private final int mDrawablePadding;
 
     protected CharSequence mText;
     protected Drawable mDrawable;
@@ -85,6 +87,8 @@
         Resources resources = getResources();
         mDragDistanceThreshold = resources.getDimensionPixelSize(R.dimen.drag_distanceThreshold);
         mDrawableSize = resources.getDimensionPixelSize(R.dimen.drop_target_text_size);
+        mDrawablePadding = resources.getDimensionPixelSize(
+                R.dimen.drop_target_button_drawable_padding);
     }
 
     @Override
@@ -211,12 +215,8 @@
         }
         final DragLayer dragLayer = mLauncher.getDragLayer();
         final DragView dragView = d.dragView;
-        final Rect from = new Rect();
-        dragLayer.getViewRectRelativeToSelf(d.dragView, from);
-
         final Rect to = getIconRect(d);
-        final float scale = (float) to.width() / from.width();
-        dragView.disableColorExtraction();
+        final float scale = (float) to.width() / dragView.getMeasuredWidth();
         dragView.detachContentView(/* reattachToPreviousParent= */ true);
         mDropTargetBar.deferOnDragEnd();
 
@@ -224,14 +224,11 @@
             completeDrop(d);
             mDropTargetBar.onDragEnd();
             mLauncher.getStateManager().goToState(NORMAL);
-            // Only re-enable updates once the workspace is back to normal, which will be after the
-            // current frame.
-            post(dragView::resumeColorExtraction);
         };
 
-        dragLayer.animateView(d.dragView, from, to, scale, 1f, 1f, 0.1f, 0.1f,
+        dragLayer.animateView(d.dragView, to, scale, 0.1f, 0.1f,
                 DRAG_VIEW_DROP_DURATION,
-                Interpolators.DEACCEL_2, Interpolators.LINEAR, onAnimationEndRunnable,
+                Interpolators.DEACCEL_2, onAnimationEndRunnable,
                 DragLayer.ANIMATION_END_DISAPPEAR, null);
     }
 
@@ -303,6 +300,8 @@
             mTextVisible = isVisible;
             setText(newText);
             setCompoundDrawablesRelative(mDrawable, null, null, null);
+            int drawablePadding = mTextVisible ? mDrawablePadding : 0;
+            setCompoundDrawablePadding(drawablePadding);
         }
     }
 
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index a6adfc4..28e3b9d 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -18,7 +18,6 @@
 
 import static android.animation.ValueAnimator.areAnimatorsEnabled;
 
-import static com.android.launcher3.Utilities.getBoundsForViewInDragLayer;
 import static com.android.launcher3.anim.Interpolators.DEACCEL_1_5;
 
 import android.animation.Animator;
@@ -1071,18 +1070,12 @@
         // Apply local extracted color if the DragView is an AppWidgetHostViewDrawable.
         View view = dragObject.dragView.getContentView();
         if (view instanceof LauncherAppWidgetHostView) {
-            Launcher launcher = Launcher.getLauncher(dragObject.dragView.getContext());
+            Launcher launcher = Launcher.getLauncher(getContext());
             Workspace workspace = launcher.getWorkspace();
             int screenId = workspace.getIdForScreen(this);
-            int pageId = workspace.getPageIndexForScreenId(screenId);
             cellToRect(targetCell[0], targetCell[1], spanX, spanY, mTempRect);
 
-            // Now get the rect in drag layer coordinates.
-            getBoundsForViewInDragLayer(launcher.getDragLayer(), this, mTempRect, true,
-                    mTmpFloatArray, mTempRectF);
-            Utilities.setRect(mTempRectF, mTempRect);
-
-            ((LauncherAppWidgetHostView) view).handleDrag(mTempRect, pageId);
+            ((LauncherAppWidgetHostView) view).handleDrag(mTempRect, this, screenId);
         }
     }
 
@@ -2148,7 +2141,7 @@
         mShakeAnimators.clear();
     }
 
-    private void commitTempPlacement() {
+    private void commitTempPlacement(View dragView) {
         mTmpOccupied.copyTo(mOccupied);
 
         int screenId = Launcher.cast(mActivity).getWorkspace().getIdForScreen(this);
@@ -2166,7 +2159,7 @@
             ItemInfo info = (ItemInfo) child.getTag();
             // We do a null check here because the item info can be null in the case of the
             // AllApps button in the hotseat.
-            if (info != null) {
+            if (info != null && child != dragView) {
                 final boolean requiresDbUpdate = (info.cellX != lp.tmpCellX
                         || info.cellY != lp.tmpCellY || info.spanX != lp.cellHSpan
                         || info.spanY != lp.cellVSpan);
@@ -2328,7 +2321,7 @@
             animateItemsToSolution(swapSolution, dragView, commit);
 
             if (commit) {
-                commitTempPlacement();
+                commitTempPlacement(null);
                 completeAndClearReorderPreviewAnimations();
                 setItemPlacementDirty(false);
             } else {
@@ -2422,7 +2415,8 @@
 
                 if (!DESTRUCTIVE_REORDER &&
                         (mode == MODE_ON_DROP || mode == MODE_ON_DROP_EXTERNAL)) {
-                    commitTempPlacement();
+                    // Since the temp solution didn't update dragView, don't commit it either
+                    commitTempPlacement(dragView);
                     completeAndClearReorderPreviewAnimations();
                     setItemPlacementDirty(false);
                 } else {
@@ -2878,7 +2872,7 @@
                 directionVector, null, false, configuration).isSolution) {
             if (commitConfig) {
                 copySolutionToTempState(configuration, null);
-                commitTempPlacement();
+                commitTempPlacement(null);
                 // undo marking cells occupied since there is actually nothing being placed yet.
                 mOccupied.markCells(0, mCountY - 1, mCountX, 1, false);
             }
diff --git a/src/com/android/launcher3/DeleteDropTarget.java b/src/com/android/launcher3/DeleteDropTarget.java
index 80ec192..477964a 100644
--- a/src/com/android/launcher3/DeleteDropTarget.java
+++ b/src/com/android/launcher3/DeleteDropTarget.java
@@ -25,6 +25,7 @@
 import android.util.AttributeSet;
 import android.view.View;
 
+import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
 import com.android.launcher3.dragndrop.DragOptions;
 import com.android.launcher3.logging.StatsLogManager;
@@ -33,6 +34,7 @@
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.views.Snackbar;
 
 public class DeleteDropTarget extends ButtonDropTarget {
@@ -127,11 +129,21 @@
     public void completeDrop(DragObject d) {
         ItemInfo item = d.dragInfo;
         if (canRemove(item)) {
-            int itemPage = mLauncher.getWorkspace().getCurrentPage();
+            ItemInfo pageItem = item;
+            if (item.container <= 0) {
+                View v = mLauncher.getWorkspace().getHomescreenIconByItemId(item.container);
+                if (v != null) {
+                    pageItem = (ItemInfo) v.getTag();
+                }
+            }
+            IntSet pageIds = pageItem.container == Favorites.CONTAINER_DESKTOP
+                    ? IntSet.wrap(pageItem.screenId)
+                    : mLauncher.getWorkspace().getCurrentPageScreenIds();
+
             onAccessibilityDrop(null, item);
             ModelWriter modelWriter = mLauncher.getModelWriter();
             Runnable onUndoClicked = () -> {
-                mLauncher.setPageToBindSynchronously(itemPage);
+                mLauncher.setPagesToBindSynchronously(pageIds);
                 modelWriter.abortDelete();
                 mLauncher.getStatsLogManager().logger().log(LAUNCHER_UNDO);
             };
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 81eda10..3010be1 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -17,7 +17,6 @@
 package com.android.launcher3;
 
 import static android.util.DisplayMetrics.DENSITY_DEVICE_STABLE;
-import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION;
 
 import static com.android.launcher3.ResourceUtils.pxFromDp;
 import static com.android.launcher3.Utilities.dpiFromPx;
@@ -33,11 +32,8 @@
 import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
-import android.hardware.display.DisplayManager;
 import android.util.DisplayMetrics;
 import android.view.Surface;
-import android.view.WindowInsets;
-import android.view.WindowManager;
 
 import com.android.launcher3.CellLayout.ContainerType;
 import com.android.launcher3.DevicePaddings.DevicePadding;
@@ -45,6 +41,7 @@
 import com.android.launcher3.icons.DotRenderer;
 import com.android.launcher3.icons.GraphicsUtils;
 import com.android.launcher3.icons.IconNormalizer;
+import com.android.launcher3.uioverrides.ApiWrapper;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.WindowBounds;
@@ -55,6 +52,8 @@
 public class DeviceProfile {
 
     private static final int DEFAULT_DOT_SIZE = 100;
+    // Ratio of empty space, qsb should take up to appear visually centered.
+    private static final float QSB_CENTER_FACTOR = .325f;
 
     public final InvariantDeviceProfile inv;
     private final Info mInfo;
@@ -163,6 +162,7 @@
     // Start is the side next to the nav bar, end is the side next to the workspace
     public final int hotseatBarSidePaddingStartPx;
     public final int hotseatBarSidePaddingEndPx;
+    public final int hotseatQsbHeight;
 
     public final float qsbBottomMarginOriginalPx;
     public int qsbBottomMarginPx;
@@ -177,11 +177,18 @@
     public float allAppsIconTextSizePx;
 
     // Overview
+    public final boolean overviewShowAsGrid;
     public int overviewTaskMarginPx;
+    public int overviewTaskMarginGridPx;
     public int overviewTaskIconSizePx;
+    public int overviewTaskIconDrawableSizePx;
+    public int overviewTaskIconDrawableSizeGridPx;
     public int overviewTaskThumbnailTopMarginPx;
     public final int overviewActionsMarginThreeButtonPx;
-    public final int overviewActionsMarginGesturePx;
+    public final int overviewActionsTopMarginGesturePx;
+    public final int overviewActionsBottomMarginGesturePx;
+    public int overviewPageSpacing;
+    public int overviewRowSpacing;
 
     // Widgets
     public final PointF appWidgetScale = new PointF(1.0f, 1.0f);
@@ -204,6 +211,8 @@
 
      // Taskbar
     public boolean isTaskbarPresent;
+    // Whether Taskbar will inset the bottom of apps by taskbarSize.
+    public boolean isTaskbarPresentInApps;
     public int taskbarSize;
     // How much of the bottom inset is due to Taskbar rather than other system elements.
     public int nonOverlappingTaskbarInset;
@@ -211,6 +220,7 @@
     // DragController
     public int flingToDeleteThresholdVelocity;
 
+    /** TODO: Once we fully migrate to staged split, remove "isMultiWindowMode" */
     DeviceProfile(Context context, InvariantDeviceProfile inv, Info info, WindowBounds windowBounds,
             boolean isMultiWindowMode, boolean transposeLayoutWithOrientation,
             boolean useTwoPanels) {
@@ -250,18 +260,14 @@
         mMetrics = context.getResources().getDisplayMetrics();
         final Resources res = context.getResources();
 
-        isTaskbarPresent = isTablet && FeatureFlags.ENABLE_TASKBAR.get();
+        hotseatQsbHeight = res.getDimensionPixelSize(R.dimen.qsb_widget_height);
+        isTaskbarPresent = isTablet && ApiWrapper.TASKBAR_DRAWN_IN_PROCESS
+                && FeatureFlags.ENABLE_TASKBAR.get();
         if (isTaskbarPresent) {
             // Taskbar will be added later, but provides bottom insets that we should subtract
             // from availableHeightPx.
             taskbarSize = res.getDimensionPixelSize(R.dimen.taskbar_size);
-            WindowInsets windowInsets =
-                    context.createWindowContext(
-                            context.getSystemService(DisplayManager.class).getDisplay(mInfo.id),
-                            TYPE_APPLICATION, null)
-                    .getSystemService(WindowManager.class)
-                    .getCurrentWindowMetrics().getWindowInsets();
-            nonOverlappingTaskbarInset = taskbarSize - windowInsets.getSystemWindowInsetBottom();
+            nonOverlappingTaskbarInset = taskbarSize - windowBounds.insets.bottom;
             if (nonOverlappingTaskbarInset > 0) {
                 nonFinalAvailableHeightPx -= nonOverlappingTaskbarInset;
             }
@@ -295,8 +301,10 @@
                 : res.getDimensionPixelSize(R.dimen.dynamic_grid_cell_layout_padding);
 
         if (isTwoPanels) {
-            cellLayoutPaddingLeftRightPx =
-                    res.getDimensionPixelSize(R.dimen.two_panel_home_side_padding);
+            cellLayoutPaddingLeftRightPx = res.getDimensionPixelSize(
+                    isLandscape
+                            ? R.dimen.two_panels_home_side_padding_landscape
+                            : R.dimen.two_panels_home_side_padding_portrait);
             cellLayoutBottomPaddingPx = 0;
         } else if (isLandscape) {
             cellLayoutPaddingLeftRightPx = 0;
@@ -345,16 +353,42 @@
                 ? res.getDimensionPixelSize(R.dimen.scalable_grid_qsb_bottom_margin)
                 : 0;
 
-        overviewTaskMarginPx = res.getDimensionPixelSize(R.dimen.overview_task_margin);
-        overviewTaskIconSizePx =
-                isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get() ? res.getDimensionPixelSize(
-                        R.dimen.task_thumbnail_icon_size_grid) : res.getDimensionPixelSize(
-                        R.dimen.task_thumbnail_icon_size);
+        overviewShowAsGrid = isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get();
+        overviewTaskMarginPx = overviewShowAsGrid
+                ? res.getDimensionPixelSize(R.dimen.overview_task_margin_focused)
+                : res.getDimensionPixelSize(R.dimen.overview_task_margin);
+        overviewTaskMarginGridPx = res.getDimensionPixelSize(R.dimen.overview_task_margin_grid);
+        overviewTaskIconSizePx = res.getDimensionPixelSize(R.dimen.task_thumbnail_icon_size);
+        overviewTaskIconDrawableSizePx =
+                res.getDimensionPixelSize(R.dimen.task_thumbnail_icon_drawable_size);
+        overviewTaskIconDrawableSizeGridPx =
+                res.getDimensionPixelSize(R.dimen.task_thumbnail_icon_drawable_size_grid);
         overviewTaskThumbnailTopMarginPx = overviewTaskIconSizePx + overviewTaskMarginPx * 2;
-        overviewActionsMarginGesturePx = res.getDimensionPixelSize(
-                R.dimen.overview_actions_bottom_margin_gesture);
+        if (overviewShowAsGrid) {
+            if (isLandscape) {
+                overviewActionsTopMarginGesturePx = res.getDimensionPixelSize(
+                        R.dimen.overview_actions_top_margin_gesture_grid_landscape);
+                overviewActionsBottomMarginGesturePx = res.getDimensionPixelSize(
+                        R.dimen.overview_actions_bottom_margin_gesture_grid_landscape);
+            } else {
+                overviewActionsTopMarginGesturePx = res.getDimensionPixelSize(
+                        R.dimen.overview_actions_top_margin_gesture_grid_portrait);
+                overviewActionsBottomMarginGesturePx = res.getDimensionPixelSize(
+                        R.dimen.overview_actions_bottom_margin_gesture_grid_portrait);
+            }
+        } else {
+            overviewActionsTopMarginGesturePx = res.getDimensionPixelSize(
+                    R.dimen.overview_actions_margin_gesture);
+            overviewActionsBottomMarginGesturePx = overviewActionsTopMarginGesturePx;
+        }
         overviewActionsMarginThreeButtonPx = res.getDimensionPixelSize(
-                R.dimen.overview_actions_bottom_margin_three_button);
+                R.dimen.overview_actions_margin_three_button);
+        overviewPageSpacing = overviewShowAsGrid
+                        ? res.getDimensionPixelSize(R.dimen.recents_page_spacing_grid)
+                        : res.getDimensionPixelSize(R.dimen.recents_page_spacing);
+        overviewRowSpacing = isLandscape
+                ? res.getDimensionPixelSize(R.dimen.overview_grid_row_spacing_landscape)
+                : res.getDimensionPixelSize(R.dimen.overview_grid_row_spacing_portrait);
 
         // Calculate all of the remaining variables.
         extraSpace = updateAvailableDimensions(res);
@@ -437,6 +471,10 @@
         cellLayoutBorderSpacingPx = isScalableGrid ? borderSpacing : 0;
     }
 
+    public Info getDisplayInfo() {
+        return mInfo;
+    }
+
     /**
      * We inset the widget padding added by the system and instead rely on the border spacing
      * between cells to create reliable consistency between widgets
@@ -569,12 +607,30 @@
         iconScale = Math.min(1f, scale);
         cellScaleToFit = scale;
 
-
         // Workspace
         final boolean isVerticalLayout = isVerticalBarLayout();
-        float invIconSizeDp = isLandscape ? inv.landscapeIconSize : inv.iconSize;
+        float invIconSizeDp;
+        float invIconTextSizeSp;
+
+        if (isTwoPanels) {
+            if (isLandscape) {
+                invIconSizeDp = inv.twoPanelLandscapeIconSize;
+                invIconTextSizeSp = inv.twoPanelLandscapeIconTextSize;
+            } else {
+                invIconSizeDp = inv.twoPanelPortraitIconSize;
+                invIconTextSizeSp = inv.twoPanelPortraitIconTextSize;
+            }
+        } else {
+            if (isLandscape) {
+                invIconSizeDp = inv.landscapeIconSize;
+                invIconTextSizeSp = inv.landscapeIconTextSize;
+            } else {
+                invIconSizeDp = inv.iconSize;
+                invIconTextSizeSp = inv.iconTextSize;
+            }
+        }
+
         iconSizePx = Math.max(1, pxFromDp(invIconSizeDp, mMetrics, iconScale));
-        float invIconTextSizeSp = isLandscape ? inv.landscapeIconTextSize : inv.iconTextSize;
         iconTextSizePx = (int) (pxFromSp(invIconTextSizeSp, mMetrics) * iconScale);
         iconDrawablePaddingPx = (int) (iconDrawablePaddingOriginalPx * iconScale);
 
@@ -727,8 +783,14 @@
         // Since we are only concerned with the overall padding, layout direction does
         // not matter.
         Point padding = getTotalWorkspacePadding();
-        result.x = calculateCellWidth(availableWidthPx - padding.x
-                - cellLayoutPaddingLeftRightPx * 2, cellLayoutBorderSpacingPx, inv.numColumns);
+        // availableWidthPx is the screen width of the device. In 2 panels mode, each panel should
+        // only have half of the screen width. In addition, there is only cellLayoutPadding in the
+        // left side of the left most panel and the right most side of the right panel. There is no
+        // cellLayoutPadding in the middle.
+        int screenWidthPx = isTwoPanels
+                ? availableWidthPx / 2 - padding.x - cellLayoutPaddingLeftRightPx
+                : availableWidthPx - padding.x - cellLayoutPaddingLeftRightPx * 2;
+        result.x = calculateCellWidth(screenWidthPx, cellLayoutBorderSpacingPx, inv.numColumns);
         result.y = calculateCellHeight(availableHeightPx - padding.y
                 - cellLayoutBottomPaddingPx, cellLayoutBorderSpacingPx, inv.numRows);
         return result;
@@ -788,7 +850,10 @@
         }
     }
 
-    public Rect getHotseatLayoutPadding() {
+    /**
+     * Returns the padding for hotseat view
+     */
+    public Rect getHotseatLayoutPadding(Context context) {
         if (isVerticalBarLayout()) {
             if (isSeascape()) {
                 mHotseatPadding.set(mInsets.left + hotseatBarSidePaddingStartPx,
@@ -797,6 +862,30 @@
                 mHotseatPadding.set(hotseatBarSidePaddingEndPx, mInsets.top,
                         mInsets.right + hotseatBarSidePaddingStartPx, mInsets.bottom);
             }
+        } else if (isTaskbarPresent) {
+            int hotseatHeight = workspacePadding.bottom + taskbarSize;
+            int taskbarOffset = getTaskbarOffsetY();
+            int hotseatTopDiff = hotseatHeight - taskbarSize - taskbarOffset;
+
+            int endOffset = ApiWrapper.getHotseatEndOffset(context);
+            int requiredWidth = iconSizePx * numShownHotseatIcons;
+
+            Resources res = context.getResources();
+            float taskbarIconSize = res.getDimension(R.dimen.taskbar_icon_size);
+            float taskbarIconSpacing = 2 * res.getDimension(R.dimen.taskbar_icon_spacing);
+            int maxSize = (int) (requiredWidth
+                    * (taskbarIconSize + taskbarIconSpacing) / taskbarIconSize);
+            int hotseatSize = Math.min(maxSize, availableWidthPx - endOffset);
+            int sideSpacing = (availableWidthPx - hotseatSize) / 2;
+            mHotseatPadding.set(sideSpacing, hotseatTopDiff, sideSpacing, taskbarOffset);
+
+            if (endOffset > sideSpacing) {
+                int diff = Utilities.isRtl(context.getResources())
+                        ? sideSpacing - endOffset
+                        : endOffset - sideSpacing;
+                mHotseatPadding.left -= diff;
+                mHotseatPadding.right += diff;
+            }
         } else {
             // We want the edges of the hotseat to line up with the edges of the workspace, but the
             // icons in the hotseat are a different size, and so don't line up perfectly. To account
@@ -818,6 +907,29 @@
     }
 
     /**
+     * Returns the number of pixels the QSB is translated from the bottom of the screen.
+     */
+    public int getQsbOffsetY() {
+        int freeSpace = isTaskbarPresent
+                ? workspacePadding.bottom
+                : hotseatBarSizePx - hotseatCellHeightPx - hotseatQsbHeight;
+
+        if (isScalableGrid && qsbBottomMarginPx > mInsets.bottom) {
+            return Math.min(qsbBottomMarginPx, freeSpace);
+        } else {
+            return (int) (freeSpace * QSB_CENTER_FACTOR)
+                + (isTaskbarPresent ? taskbarSize : mInsets.bottom);
+        }
+    }
+
+    /**
+     * Returns the number of pixels the taskbar is translated from the bottom of the screen.
+     */
+    public int getTaskbarOffsetY() {
+        return (getQsbOffsetY() - taskbarSize) / 2;
+    }
+
+    /**
      * @return the bounds for which the open folders should be contained within
      */
     public Rect getAbsoluteOpenFolderBounds() {
@@ -972,6 +1084,7 @@
         writer.println(prefix + "\tnumShownHotseatIcons: " + numShownHotseatIcons);
 
         writer.println(prefix + "\tisTaskbarPresent:" + isTaskbarPresent);
+        writer.println(prefix + "\tisTaskbarPresentInApps:" + isTaskbarPresentInApps);
 
         writer.println(prefix + pxToDpStr("taskbarSize", taskbarSize));
         writer.println(prefix + pxToDpStr("nonOverlappingTaskbarInset",
diff --git a/src/com/android/launcher3/Hotseat.java b/src/com/android/launcher3/Hotseat.java
index eaca162..b3ae15e 100644
--- a/src/com/android/launcher3/Hotseat.java
+++ b/src/com/android/launcher3/Hotseat.java
@@ -49,8 +49,6 @@
     private final View mQsb;
     private final int mQsbHeight;
 
-    private final int mTaskbarViewHeight;
-
     public Hotseat(Context context) {
         this(context, null);
     }
@@ -63,10 +61,9 @@
         super(context, attrs, defStyle);
 
         mQsb = LayoutInflater.from(context).inflate(R.layout.search_container_hotseat, this, false);
-        mQsbHeight = mQsb.getLayoutParams().height;
         addView(mQsb);
 
-        mTaskbarViewHeight = context.getResources().getDimensionPixelSize(R.dimen.taskbar_size);
+        mQsbHeight = getResources().getDimensionPixelSize(R.dimen.qsb_widget_height);
     }
 
     /**
@@ -114,18 +111,13 @@
             lp.gravity = Gravity.BOTTOM;
             lp.width = ViewGroup.LayoutParams.MATCH_PARENT;
             lp.height = (grid.isTaskbarPresent
-                        ? grid.workspacePadding.bottom
+                    ? grid.workspacePadding.bottom
                         : grid.hotseatBarSizePx)
                     + (grid.isTaskbarPresent ? grid.taskbarSize : insets.bottom);
         }
 
-        if (!grid.isTaskbarPresent) {
-            // When taskbar is present, we set the padding separately to ensure a seamless visual
-            // handoff between taskbar and hotseat during drag and drop.
-            Rect padding = grid.getHotseatLayoutPadding();
-            setPadding(padding.left, padding.top, padding.right, padding.bottom);
-        }
-
+        Rect padding = grid.getHotseatLayoutPadding(getContext());
+        setPadding(padding.left, padding.top, padding.right, padding.bottom);
         setLayoutParams(lp);
         InsettableFrameLayout.dispatchInsets(this, insets);
     }
@@ -193,37 +185,12 @@
         int left = (r - l - qsbWidth) / 2;
         int right = left + qsbWidth;
 
-        int bottom = b - t - getQsbOffsetY();
+        int bottom = b - t - mActivity.getDeviceProfile().getQsbOffsetY();
         int top = bottom - mQsbHeight;
         mQsb.layout(left, top, right, bottom);
     }
 
     /**
-     * Returns the number of pixels the QSB is translated from the bottom of the screen.
-     */
-    private int getQsbOffsetY() {
-        DeviceProfile dp = mActivity.getDeviceProfile();
-        int freeSpace = dp.isTaskbarPresent
-                ? dp.workspacePadding.bottom
-                : dp.hotseatBarSizePx - dp.hotseatCellHeightPx - mQsbHeight;
-
-        if (dp.isScalableGrid && dp.qsbBottomMarginPx > dp.getInsets().bottom) {
-            return Math.min(dp.qsbBottomMarginPx, freeSpace);
-        } else {
-            return (int) (freeSpace * QSB_CENTER_FACTOR) + (dp.isTaskbarPresent
-                    ? dp.taskbarSize
-                    : dp.getInsets().bottom);
-        }
-    }
-
-    /**
-     * Returns the number of pixels the taskbar is translated from the bottom of the screen.
-     */
-    public int getTaskbarOffsetY() {
-        return (getQsbOffsetY() - mTaskbarViewHeight) / 2;
-    }
-
-    /**
      * Sets the alpha value of just our ShortcutAndWidgetContainer.
      */
     public void setIconsAlpha(float alpha) {
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index 29a0223..2e14823 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -17,7 +17,6 @@
 package com.android.launcher3;
 
 import static com.android.launcher3.Utilities.dpiFromPx;
-import static com.android.launcher3.Utilities.getPointString;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_TWO_PANEL_HOME;
 import static com.android.launcher3.util.DisplayController.CHANGE_DENSITY;
 import static com.android.launcher3.util.DisplayController.CHANGE_SUPPORTED_BOUNDS;
@@ -45,7 +44,7 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
-import com.android.launcher3.testing.TestProtocol;
+import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.IntArray;
@@ -68,11 +67,10 @@
     public static final MainThreadInitializedObject<InvariantDeviceProfile> INSTANCE =
             new MainThreadInitializedObject<>(InvariantDeviceProfile::new);
 
-    public static final String KEY_MIGRATION_SRC_WORKSPACE_SIZE = "migration_src_workspace_size";
-    public static final String KEY_MIGRATION_SRC_HOTSEAT_COUNT = "migration_src_hotseat_count";
-
     private static final int DEFAULT_TRUE = -1;
     private static final int DEFAULT_SPLIT_DISPLAY = 2;
+    private static final int GRID_ENABLED_ALL_DISPLAYS = 0;
+    private static final int GRID_ENABLED_SINGLE_DISPLAY = 1;
 
     private static final String KEY_IDP_GRID_NAME = "idp_grid_name";
 
@@ -99,12 +97,17 @@
     public int numFolderColumns;
     public float iconSize;
     public float landscapeIconSize;
+    public float twoPanelPortraitIconSize;
+    public float twoPanelLandscapeIconSize;
     public float landscapeIconTextSize;
+    public float twoPanelPortraitIconTextSize;
+    public float twoPanelLandscapeIconTextSize;
     public int iconBitmapSize;
     public int fillResIconDpi;
     public float iconTextSize;
     public float allAppsIconSize;
     public float allAppsIconTextSize;
+    public boolean isSplitDisplay;
 
     public float minCellHeight;
     public float minCellWidth;
@@ -162,9 +165,13 @@
         numFolderColumns = p.numFolderColumns;
         iconSize = p.iconSize;
         landscapeIconSize = p.landscapeIconSize;
+        twoPanelPortraitIconSize = p.twoPanelPortraitIconSize;
+        twoPanelLandscapeIconSize = p.twoPanelLandscapeIconSize;
         iconBitmapSize = p.iconBitmapSize;
         iconTextSize = p.iconTextSize;
         landscapeIconTextSize = p.landscapeIconTextSize;
+        twoPanelPortraitIconTextSize = p.twoPanelPortraitIconTextSize;
+        twoPanelLandscapeIconTextSize = p.twoPanelLandscapeIconTextSize;
         numShownHotseatIcons = p.numShownHotseatIcons;
         numDatabaseHotseatIcons = p.numDatabaseHotseatIcons;
         numAllAppsColumns = p.numAllAppsColumns;
@@ -190,10 +197,7 @@
         if (!newGridName.equals(gridName)) {
             Utilities.getPrefs(context).edit().putString(KEY_IDP_GRID_NAME, newGridName).apply();
         }
-        Utilities.getPrefs(context).edit()
-                .putInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, numDatabaseHotseatIcons)
-                .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, getPointString(numColumns, numRows))
-                .apply();
+        new DeviceGridState(this).writeToPrefs(context);
 
         DisplayController.INSTANCE.get(context).addChangeListener(
                 (displayContext, info, flags) -> {
@@ -253,17 +257,10 @@
 
     private String initGrid(Context context, String gridName) {
         Info displayInfo = DisplayController.INSTANCE.get(context).getInfo();
-        // Determine if we have split display
-
-        boolean isTablet = false, isPhone = false;
-        for (WindowBounds bounds : displayInfo.supportedBounds) {
-            if (displayInfo.isTablet(bounds)) {
-                isTablet = true;
-            } else {
-                isPhone = true;
-            }
-        }
-        boolean isSplitDisplay = isPhone && isTablet && ENABLE_TWO_PANEL_HOME.get();
+        // Each screen has two profiles (portrait/landscape), so devices with four or more
+        // supported profiles implies two or more internal displays.
+        boolean isSplitDisplay =
+                displayInfo.supportedBounds.size() >= 4 && ENABLE_TWO_PANEL_HOME.get();
 
         ArrayList<DisplayOption> allOptions =
                 getPredefinedDeviceProfiles(context, gridName, isSplitDisplay);
@@ -287,14 +284,19 @@
         numFolderColumns = closestProfile.numFolderColumns;
         isScalable = closestProfile.isScalable;
         devicePaddingId = closestProfile.devicePaddingId;
+        this.isSplitDisplay = isSplitDisplay;
 
         mExtraAttrs = closestProfile.extraAttrs;
 
         iconSize = displayOption.iconSize;
         landscapeIconSize = displayOption.landscapeIconSize;
+        twoPanelPortraitIconSize = displayOption.twoPanelPortraitIconSize;
+        twoPanelLandscapeIconSize = displayOption.twoPanelLandscapeIconSize;
         iconBitmapSize = ResourceUtils.pxFromDp(iconSize, metrics);
         iconTextSize = displayOption.iconTextSize;
         landscapeIconTextSize = displayOption.landscapeIconTextSize;
+        twoPanelPortraitIconTextSize = displayOption.twoPanelPortraitIconTextSize;
+        twoPanelLandscapeIconTextSize = displayOption.twoPanelLandscapeIconTextSize;
         fillResIconDpi = getLauncherIconDensity(iconBitmapSize);
 
         minCellHeight = displayOption.minCellHeight;
@@ -393,16 +395,19 @@
                 if ((type == XmlPullParser.START_TAG)
                         && GridOption.TAG_NAME.equals(parser.getName())) {
 
-                    GridOption gridOption = new GridOption(context, Xml.asAttributeSet(parser));
-                    final int displayDepth = parser.getDepth();
-                    while (((type = parser.next()) != XmlPullParser.END_TAG ||
-                            parser.getDepth() > displayDepth)
-                            && type != XmlPullParser.END_DOCUMENT) {
-                        if ((type == XmlPullParser.START_TAG) && "display-option".equals(
-                                parser.getName())) {
-                            profiles.add(new DisplayOption(gridOption, context,
-                                    Xml.asAttributeSet(parser),
-                                    isSplitDisplay ? DEFAULT_SPLIT_DISPLAY : DEFAULT_TRUE));
+                    GridOption gridOption =
+                            new GridOption(context, Xml.asAttributeSet(parser), isSplitDisplay);
+                    if (gridOption.isEnabled) {
+                        final int displayDepth = parser.getDepth();
+                        while (((type = parser.next()) != XmlPullParser.END_TAG
+                                || parser.getDepth() > displayDepth)
+                                && type != XmlPullParser.END_DOCUMENT) {
+                            if ((type == XmlPullParser.START_TAG) && "display-option".equals(
+                                    parser.getName())) {
+                                profiles.add(new DisplayOption(gridOption, context,
+                                        Xml.asAttributeSet(parser),
+                                        isSplitDisplay ? DEFAULT_SPLIT_DISPLAY : DEFAULT_TRUE));
+                            }
                         }
                     }
                 }
@@ -414,7 +419,7 @@
         ArrayList<DisplayOption> filteredProfiles = new ArrayList<>();
         if (!TextUtils.isEmpty(gridName)) {
             for (DisplayOption option : profiles) {
-                if (gridName.equals(option.grid.name)) {
+                if (gridName.equals(option.grid.name) && option.grid.isEnabled) {
                     filteredProfiles.add(option);
                 }
             }
@@ -433,6 +438,32 @@
         return filteredProfiles;
     }
 
+    /**
+     * @return all the grid options that can be shown on the device
+     */
+    public List<GridOption> parseAllGridOptions(Context context) {
+        List<GridOption> result = new ArrayList<>();
+        try (XmlResourceParser parser = context.getResources().getXml(R.xml.device_profiles)) {
+            final int depth = parser.getDepth();
+            int type;
+            while (((type = parser.next()) != XmlPullParser.END_TAG
+                    || parser.getDepth() > depth) && type != XmlPullParser.END_DOCUMENT) {
+                if ((type == XmlPullParser.START_TAG)
+                        && GridOption.TAG_NAME.equals(parser.getName())) {
+                    GridOption option =
+                            new GridOption(context, Xml.asAttributeSet(parser), isSplitDisplay);
+                    if (option.isEnabled) {
+                        result.add(option);
+                    }
+                }
+            }
+        } catch (IOException | XmlPullParserException e) {
+            Log.e(TAG, "Error parsing device profile", e);
+            return Collections.emptyList();
+        }
+        return result;
+    }
+
     private int getLauncherIconDensity(int requiredSize) {
         // Densities typically defined by an app.
         int[] densityBuckets = new int[] {
@@ -594,6 +625,7 @@
         public final String name;
         public final int numRows;
         public final int numColumns;
+        public final boolean isEnabled;
 
         private final int numFolderRows;
         private final int numFolderColumns;
@@ -613,7 +645,7 @@
 
         private final SparseArray<TypedValue> extraAttrs;
 
-        public GridOption(Context context, AttributeSet attrs) {
+        public GridOption(Context context, AttributeSet attrs, boolean isSplitDisplay) {
             TypedArray a = context.obtainStyledAttributes(
                     attrs, R.styleable.GridDisplayOption);
             name = a.getString(R.styleable.GridDisplayOption_name);
@@ -621,8 +653,10 @@
             numColumns = a.getInt(R.styleable.GridDisplayOption_numColumns, 0);
 
             dbFile = a.getString(R.styleable.GridDisplayOption_dbFile);
-            defaultLayoutId = a.getResourceId(
-                    R.styleable.GridDisplayOption_defaultLayoutId, 0);
+            defaultLayoutId = a.getResourceId(isSplitDisplay && a.hasValue(
+                    R.styleable.GridDisplayOption_defaultSplitDisplayLayoutId)
+                    ? R.styleable.GridDisplayOption_defaultSplitDisplayLayoutId
+                    : R.styleable.GridDisplayOption_defaultLayoutId, 0);
             demoModeLayoutId = a.getResourceId(
                     R.styleable.GridDisplayOption_demoModeLayoutId, defaultLayoutId);
 
@@ -646,6 +680,12 @@
             devicePaddingId = a.getResourceId(
                     R.styleable.GridDisplayOption_devicePaddingId, 0);
 
+            final int enabledInt =
+                    a.getInteger(R.styleable.GridDisplayOption_gridEnabled,
+                            GRID_ENABLED_ALL_DISPLAYS);
+            isEnabled = enabledInt == GRID_ENABLED_ALL_DISPLAYS
+                    || enabledInt == GRID_ENABLED_SINGLE_DISPLAY && !isSplitDisplay;
+
             a.recycle();
             extraAttrs = Themes.createValueMap(context, attrs,
                     IntArray.wrap(R.styleable.GridDisplayOption));
@@ -668,7 +708,11 @@
         private float iconSize;
         private float iconTextSize;
         private float landscapeIconSize;
+        private float twoPanelPortraitIconSize;
+        private float twoPanelLandscapeIconSize;
         private float landscapeIconTextSize;
+        private float twoPanelPortraitIconTextSize;
+        private float twoPanelLandscapeIconTextSize;
         private float allAppsIconSize;
         private float allAppsIconTextSize;
 
@@ -691,9 +735,19 @@
             iconSize = a.getFloat(R.styleable.ProfileDisplayOption_iconImageSize, 0);
             landscapeIconSize = a.getFloat(R.styleable.ProfileDisplayOption_landscapeIconSize,
                     iconSize);
+            twoPanelPortraitIconSize = a.getFloat(
+                    R.styleable.ProfileDisplayOption_twoPanelPortraitIconSize, iconSize);
+            twoPanelLandscapeIconSize = a.getFloat(
+                    R.styleable.ProfileDisplayOption_twoPanelLandscapeIconSize,
+                    landscapeIconSize);
             iconTextSize = a.getFloat(R.styleable.ProfileDisplayOption_iconTextSize, 0);
             landscapeIconTextSize = a.getFloat(
                     R.styleable.ProfileDisplayOption_landscapeIconTextSize, iconTextSize);
+            twoPanelPortraitIconTextSize = a.getFloat(
+                    R.styleable.ProfileDisplayOption_twoPanelPortraitIconTextSize, iconTextSize);
+            twoPanelLandscapeIconTextSize = a.getFloat(
+                    R.styleable.ProfileDisplayOption_twoPanelLandscapeIconTextSize,
+                    landscapeIconTextSize);
 
             allAppsIconSize = a.getFloat(R.styleable.ProfileDisplayOption_allAppsIconSize,
                     iconSize);
@@ -719,9 +773,13 @@
         private DisplayOption multiply(float w) {
             iconSize *= w;
             landscapeIconSize *= w;
+            twoPanelPortraitIconSize *= w;
+            twoPanelLandscapeIconSize *= w;
             allAppsIconSize *= w;
             iconTextSize *= w;
             landscapeIconTextSize *= w;
+            twoPanelPortraitIconTextSize *= w;
+            twoPanelLandscapeIconTextSize *= w;
             allAppsIconTextSize *= w;
             minCellHeight *= w;
             minCellWidth *= w;
@@ -732,9 +790,13 @@
         private DisplayOption add(DisplayOption p) {
             iconSize += p.iconSize;
             landscapeIconSize += p.landscapeIconSize;
+            twoPanelPortraitIconSize += p.twoPanelPortraitIconSize;
+            twoPanelLandscapeIconSize += p.twoPanelLandscapeIconSize;
             allAppsIconSize += p.allAppsIconSize;
             iconTextSize += p.iconTextSize;
             landscapeIconTextSize += p.landscapeIconTextSize;
+            twoPanelPortraitIconTextSize += p.twoPanelPortraitIconTextSize;
+            twoPanelLandscapeIconTextSize += p.twoPanelLandscapeIconTextSize;
             allAppsIconTextSize += p.allAppsIconTextSize;
             minCellHeight += p.minCellHeight;
             minCellWidth += p.minCellWidth;
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 5fb862e..4d5cc5e 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -48,7 +48,6 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WIDGET_RECONFIGURED;
 import static com.android.launcher3.model.ItemInstallQueue.FLAG_ACTIVITY_PAUSED;
 import static com.android.launcher3.model.ItemInstallQueue.FLAG_DRAG_AND_DROP;
-import static com.android.launcher3.model.ItemInstallQueue.FLAG_LOADER_RUNNING;
 import static com.android.launcher3.popup.SystemShortcut.APP_INFO;
 import static com.android.launcher3.popup.SystemShortcut.INSTALL;
 import static com.android.launcher3.popup.SystemShortcut.WIDGETS;
@@ -80,6 +79,7 @@
 import android.database.sqlite.SQLiteDatabase;
 import android.graphics.Bitmap;
 import android.graphics.Rect;
+import android.graphics.RectF;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.CancellationSignal;
@@ -106,6 +106,7 @@
 import android.widget.Toast;
 
 import androidx.annotation.CallSuper;
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.annotation.VisibleForTesting;
@@ -117,6 +118,7 @@
 import com.android.launcher3.allapps.AllAppsStore;
 import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.launcher3.allapps.DiscoveryBounce;
+import com.android.launcher3.anim.AnimatorListeners;
 import com.android.launcher3.anim.PropertyListBuilder;
 import com.android.launcher3.compat.AccessibilityManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
@@ -166,6 +168,7 @@
 import com.android.launcher3.util.ActivityTracker;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.ItemInfoMatcher;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
@@ -173,6 +176,7 @@
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.PendingRequestArgs;
+import com.android.launcher3.util.RunnableList;
 import com.android.launcher3.util.SafeCloseable;
 import com.android.launcher3.util.SystemUiController;
 import com.android.launcher3.util.Themes;
@@ -248,8 +252,6 @@
     protected static final int REQUEST_LAST = 100;
 
     // Type: int
-    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
-    // Type: int
     private static final String RUNTIME_STATE = "launcher.state";
     // Type: PendingRequestArgs
     private static final String RUNTIME_STATE_PENDING_REQUEST_ARGS = "launcher.request_args";
@@ -259,6 +261,8 @@
     private static final String RUNTIME_STATE_PENDING_ACTIVITY_RESULT = "launcher.activity_result";
     // Type: SparseArray<Parcelable>
     private static final String RUNTIME_STATE_WIDGET_PANEL = "launcher.widget_panel";
+    // Type int[]
+    private static final String RUNTIME_STATE_CURRENT_SCREEN_IDS = "launcher.current_screen_ids";
 
     public static final String ON_CREATE_EVT = "Launcher.onCreate";
     public static final String ON_START_EVT = "Launcher.onStart";
@@ -322,8 +326,8 @@
 
     private PopupDataProvider mPopupDataProvider;
 
-    private int mSynchronouslyBoundPage = PagedView.INVALID_PAGE;
-    private int mPageToBindSynchronously = PagedView.INVALID_PAGE;
+    private IntSet mSynchronouslyBoundPages = new IntSet();
+    @NonNull private IntSet mPagesToBindSynchronously = new IntSet();
 
     // We only want to get the SharedPreferences once since it does an FS stat each time we get
     // it from the context.
@@ -458,13 +462,12 @@
         restoreState(savedInstanceState);
         mStateManager.reapplyState();
 
-        // We only load the page synchronously if the user rotates (or triggers a
-        // configuration change) while launcher is in the foreground
-        int currentScreen = PagedView.INVALID_PAGE;
         if (savedInstanceState != null) {
-            currentScreen = savedInstanceState.getInt(RUNTIME_STATE_CURRENT_SCREEN, currentScreen);
+            int[] pageIds = savedInstanceState.getIntArray(RUNTIME_STATE_CURRENT_SCREEN_IDS);
+            if (pageIds != null) {
+                mPagesToBindSynchronously = IntSet.wrap(pageIds);
+            }
         }
-        mPageToBindSynchronously = currentScreen;
 
         if (!mModel.addCallbacksAndLoad(this)) {
             if (!internalStateHandled) {
@@ -596,7 +599,7 @@
         }
 
         onDeviceProfileInitiated();
-        mModelWriter = mModel.getWriter(getDeviceProfile().isVerticalBarLayout(), true);
+        mModelWriter = mModel.getWriter(getDeviceProfile().isVerticalBarLayout(), true, this);
     }
 
     public RotationHelper getRotationHelper() {
@@ -1294,7 +1297,7 @@
             }
 
             if (!foundCellSpan) {
-                mWorkspace.onNoCellFound(layout);
+                mWorkspace.onNoCellFound(layout, info, /* logInstanceId= */ null);
                 return;
             }
 
@@ -1312,7 +1315,8 @@
         }
     }
 
-    public FolderIcon findFolderIcon(final int folderIconId) {
+    @Override
+    public @Nullable FolderIcon findFolderIcon(final int folderIconId) {
         return (FolderIcon) mWorkspace.getHomescreenIconByItemId(folderIconId);
     }
 
@@ -1587,18 +1591,22 @@
     @Override
     public void onRestoreInstanceState(Bundle state) {
         super.onRestoreInstanceState(state);
-        mWorkspace.restoreInstanceStateForChild(mSynchronouslyBoundPage);
+        if (mSynchronouslyBoundPages != null) {
+            mSynchronouslyBoundPages.forEach(screenId -> {
+                int pageIndex = mWorkspace.getPageIndexForScreenId(screenId);
+                if (pageIndex != PagedView.INVALID_PAGE) {
+                    mWorkspace.restoreInstanceStateForChild(pageIndex);
+                }
+            });
+        }
     }
 
     @Override
     protected void onSaveInstanceState(Bundle outState) {
-        if (mWorkspace.getChildCount() > 0) {
-            outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getNextPage());
-
-        }
+        outState.putIntArray(RUNTIME_STATE_CURRENT_SCREEN_IDS,
+                mWorkspace.getCurrentPageScreenIds().getArray().toArray());
         outState.putInt(RUNTIME_STATE, mStateManager.getState().ordinal);
 
-
         AbstractFloatingView widgets = AbstractFloatingView
                 .getOpenView(this, AbstractFloatingView.TYPE_WIDGETS_FULL_SHEET);
         if (widgets != null) {
@@ -1921,7 +1929,7 @@
 
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
-        TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "Key event", event);
+        TestLogging.recordKeyEvent(TestProtocol.SEQUENCE_MAIN, "Key event", event);
         return (event.getKeyCode() == KeyEvent.KEYCODE_HOME) || super.dispatchKeyEvent(event);
     }
 
@@ -2077,25 +2085,42 @@
     }
 
     /**
-     * Sets the next page to bind synchronously on next bind.
-     * @param page
+     * Sets the next pages to bind synchronously on next bind.
+     * @param pages should not be null.
      */
-    public void setPageToBindSynchronously(int page) {
-        mPageToBindSynchronously = page;
+    public void setPagesToBindSynchronously(@NonNull IntSet pages) {
+        mPagesToBindSynchronously = pages;
     }
 
-    /**
-     * Implementation of the method from LauncherModel.Callbacks.
-     */
     @Override
-    public int getPageToBindSynchronously() {
-        if (mPageToBindSynchronously != PagedView.INVALID_PAGE) {
-            return mPageToBindSynchronously;
-        } else  if (mWorkspace != null) {
-            return mWorkspace.getCurrentPage();
-        } else {
-            return 0;
+    public IntSet getPagesToBindSynchronously(IntArray orderedScreenIds) {
+        IntSet visibleIds = mPagesToBindSynchronously.isEmpty()
+                ? mWorkspace.getCurrentPageScreenIds() : mPagesToBindSynchronously;
+        IntArray actualIds = new IntArray();
+
+        IntSet result = new IntSet();
+        if (visibleIds.isEmpty()) {
+            return result;
         }
+        for (int id : orderedScreenIds.toArray()) {
+            actualIds.add(id);
+        }
+        int firstId = visibleIds.getArray().get(0);
+        if (actualIds.contains(firstId)) {
+            result.add(firstId);
+
+            if (mDeviceProfile.isTwoPanels) {
+                int index = actualIds.indexOf(firstId);
+                int nextIndex = (index / 2) * 2;
+                if (nextIndex == index) {
+                    nextIndex++;
+                }
+                if (nextIndex < actualIds.size()) {
+                    result.add(actualIds.get(nextIndex));
+                }
+            }
+        }
+        return result;
     }
 
     /**
@@ -2105,7 +2130,7 @@
     @Override
     public void clearPendingBinds() {
         if (mPendingExecutor != null) {
-            mPendingExecutor.markCompleted();
+            mPendingExecutor.cancel();
             mPendingExecutor = null;
 
             // We might have set this flag previously and forgot to clear it.
@@ -2143,11 +2168,11 @@
 
     @Override
     public void bindScreens(IntArray orderedScreenIds) {
-        // Make sure the first screen is always at the start.
+        int firstScreenPosition = 0;
         if (FeatureFlags.QSB_ON_FIRST_SCREEN &&
-                orderedScreenIds.indexOf(Workspace.FIRST_SCREEN_ID) != 0) {
+                orderedScreenIds.indexOf(Workspace.FIRST_SCREEN_ID) != firstScreenPosition) {
             orderedScreenIds.removeValue(Workspace.FIRST_SCREEN_ID);
-            orderedScreenIds.add(0, Workspace.FIRST_SCREEN_ID);
+            orderedScreenIds.add(firstScreenPosition, Workspace.FIRST_SCREEN_ID);
         } else if (!FeatureFlags.QSB_ON_FIRST_SCREEN && orderedScreenIds.isEmpty()) {
             // If there are no screens, we need to have an empty screen
             mWorkspace.addExtraEmptyScreen();
@@ -2164,10 +2189,12 @@
         int count = orderedScreenIds.size();
         for (int i = 0; i < count; i++) {
             int screenId = orderedScreenIds.get(i);
-            if (!FeatureFlags.QSB_ON_FIRST_SCREEN || screenId != Workspace.FIRST_SCREEN_ID) {
+            if (FeatureFlags.QSB_ON_FIRST_SCREEN && screenId == Workspace.FIRST_SCREEN_ID) {
                 // No need to bind the first screen, as its always bound.
-                mWorkspace.insertNewWorkspaceScreenBeforeEmptyScreen(screenId);
+                continue;
             }
+
+            mWorkspace.insertNewWorkspaceScreenBeforeEmptyScreen(screenId);
         }
     }
 
@@ -2532,25 +2559,6 @@
         return info;
     }
 
-    public void onPageBoundSynchronously(int page) {
-        mSynchronouslyBoundPage = page;
-        mWorkspace.setCurrentPage(page);
-        mPageToBindSynchronously = PagedView.INVALID_PAGE;
-    }
-
-    @Override
-    public void executeOnNextDraw(ViewOnDrawExecutor executor) {
-        clearPendingBinds();
-        mPendingExecutor = executor;
-        if (!isInState(ALL_APPS)) {
-            mAppsView.getAppsStore().enableDeferUpdates(AllAppsStore.DEFER_UPDATES_NEXT_DRAW);
-            mPendingExecutor.execute(() -> mAppsView.getAppsStore().disableDeferUpdates(
-                    AllAppsStore.DEFER_UPDATES_NEXT_DRAW));
-        }
-
-        executor.attachTo(this);
-    }
-
     public void clearPendingExecutor(ViewOnDrawExecutor executor) {
         if (mPendingExecutor == executor) {
             mPendingExecutor = null;
@@ -2558,22 +2566,28 @@
     }
 
     @Override
-    public void finishFirstPageBind(final ViewOnDrawExecutor executor) {
+    public void onInitialBindComplete(IntSet boundPages, RunnableList pendingTasks) {
+        mSynchronouslyBoundPages = boundPages;
+        mPagesToBindSynchronously = new IntSet();
+
+        clearPendingBinds();
+        ViewOnDrawExecutor executor = new ViewOnDrawExecutor(pendingTasks);
+        mPendingExecutor = executor;
+        if (!isInState(ALL_APPS)) {
+            mAppsView.getAppsStore().enableDeferUpdates(AllAppsStore.DEFER_UPDATES_NEXT_DRAW);
+            pendingTasks.add(() -> mAppsView.getAppsStore().disableDeferUpdates(
+                    AllAppsStore.DEFER_UPDATES_NEXT_DRAW));
+        }
+
         AlphaProperty property = mDragLayer.getAlphaProperty(ALPHA_INDEX_LAUNCHER_LOAD);
         if (property.getValue() < 1) {
             ObjectAnimator anim = ObjectAnimator.ofFloat(property, MultiValueAlpha.VALUE, 1);
-            if (executor != null) {
-                anim.addListener(new AnimatorListenerAdapter() {
-                    @Override
-                    public void onAnimationEnd(Animator animation) {
-                        executor.onLoadAnimationCompleted();
-                    }
-                });
-            }
+            anim.addListener(AnimatorListeners.forEndCallback(executor::onLoadAnimationCompleted));
             anim.start();
-        } else if (executor != null) {
+        } else {
             executor.onLoadAnimationCompleted();
         }
+        executor.attachTo(this);
     }
 
     /**
@@ -2581,7 +2595,7 @@
      *
      * Implementation of the method from LauncherModel.Callbacks.
      */
-    public void finishBindingItems(int pageBoundFirst) {
+    public void finishBindingItems(IntSet pagesBoundFirst) {
         Object traceToken = TraceHelper.INSTANCE.beginSection("finishBindingItems");
         mWorkspace.restoreInstanceStateForRemainingPages();
 
@@ -2593,14 +2607,14 @@
             mPendingActivityResult = null;
         }
 
-        ItemInstallQueue.INSTANCE.get(this)
-                .resumeModelPush(FLAG_LOADER_RUNNING);
-
+        int currentPage = pagesBoundFirst != null && !pagesBoundFirst.isEmpty()
+                ? mWorkspace.getPageIndexForScreenId(pagesBoundFirst.getArray().get(0))
+                : PagedView.INVALID_PAGE;
         // When undoing the removal of the last item on a page, return to that page.
         // Since we are just resetting the current page without user interaction,
         // override the previous page so we don't log the page switch.
-        mWorkspace.setCurrentPage(pageBoundFirst, pageBoundFirst /* overridePrevPage */);
-        mPageToBindSynchronously = PagedView.INVALID_PAGE;
+        mWorkspace.setCurrentPage(currentPage, currentPage /* overridePrevPage */);
+        mPagesToBindSynchronously = new IntSet();
 
         // Cache one page worth of icons
         getViewCache().setCacheSize(R.layout.folder_application,
@@ -2670,7 +2684,7 @@
     @Override
     public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) {
         if (!updated.isEmpty()) {
-            mWorkspace.updateShortcuts(updated);
+            mWorkspace.updateWorkspaceItems(updated, this);
             PopupContainerWithArrow.dismissInvalidPopup(this);
         }
     }
@@ -2682,7 +2696,7 @@
      */
     @Override
     public void bindRestoreItemsChange(HashSet<ItemInfo> updates) {
-        mWorkspace.updateRestoreItems(updates);
+        mWorkspace.updateRestoreItems(updates, this);
     }
 
     /**
@@ -2834,13 +2848,26 @@
                 if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
                     Log.d(TestProtocol.PERMANENT_DIAG_TAG, "Opening options popup on key up");
                 }
-                OptionsPopupView.showDefaultOptions(this, -1, -1);
+                showDefaultOptions(-1, -1);
             }
             return true;
         }
         return super.onKeyUp(keyCode, event);
     }
 
+    /**
+     * Shows the default options popup
+     */
+    public void showDefaultOptions(float x, float y) {
+        float halfSize = getResources().getDimension(R.dimen.options_menu_thumb_size) / 2;
+        if (x < 0 || y < 0) {
+            x = mDragLayer.getWidth() / 2;
+            y = mDragLayer.getHeight() / 2;
+        }
+        RectF target = new RectF(x - halfSize, y - halfSize, x + halfSize, y + halfSize);
+        OptionsPopupView.show(this, target, OptionsPopupView.getOptions(this), false);
+    }
+
     @Override
     protected void collectStateHandlers(List<StateHandler> out) {
         out.add(getAllAppsController());
@@ -2884,13 +2911,6 @@
         return new float[] {NO_SCALE, NO_OFFSET};
     }
 
-    /**
-     * @see LauncherState#getTaskbarScale(Launcher)
-     */
-    public float getNormalTaskbarScale() {
-        return 1f;
-    }
-
     public static Launcher getLauncher(Context context) {
         return fromContext(context);
     }
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 3d6be69..702b73a 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -48,7 +48,6 @@
 import com.android.launcher3.util.SettingsCache;
 import com.android.launcher3.util.SimpleBroadcastReceiver;
 import com.android.launcher3.util.Themes;
-import com.android.launcher3.widget.DatabaseWidgetPreviewLoader;
 import com.android.launcher3.widget.custom.CustomWidgetManager;
 
 public class LauncherAppState {
@@ -64,7 +63,6 @@
     private final LauncherModel mModel;
     private final IconProvider mIconProvider;
     private final IconCache mIconCache;
-    private final DatabaseWidgetPreviewLoader mWidgetCache;
     private final InvariantDeviceProfile mInvariantDeviceProfile;
     private final RunnableList mOnTerminateCallback = new RunnableList();
 
@@ -139,7 +137,6 @@
         mIconProvider =  new IconProvider(context, Themes.isThemedIconEnabled(context));
         mIconCache = new IconCache(mContext, mInvariantDeviceProfile,
                 iconCacheFileName, mIconProvider);
-        mWidgetCache = new DatabaseWidgetPreviewLoader(mContext, mIconCache);
         mModel = new LauncherModel(context, this, mIconCache, new AppFilter(mContext));
         mOnTerminateCallback.add(mIconCache::close);
     }
@@ -155,7 +152,6 @@
         LauncherIcons.clearPool();
         mIconCache.updateIconParams(
                 mInvariantDeviceProfile.fillResIconDpi, mInvariantDeviceProfile.iconBitmapSize);
-        mWidgetCache.refresh();
         mModel.forceReload();
     }
 
@@ -181,10 +177,6 @@
         return mModel;
     }
 
-    public DatabaseWidgetPreviewLoader getWidgetCache() {
-        return mWidgetCache;
-    }
-
     public InvariantDeviceProfile getInvariantDeviceProfile() {
         return mInvariantDeviceProfile;
     }
diff --git a/src/com/android/launcher3/LauncherBackupAgent.java b/src/com/android/launcher3/LauncherBackupAgent.java
index 140794b..dc533f0 100644
--- a/src/com/android/launcher3/LauncherBackupAgent.java
+++ b/src/com/android/launcher3/LauncherBackupAgent.java
@@ -31,6 +31,6 @@
 
     @Override
     public void onRestoreFinished() {
-        RestoreDbTask.setPending(this, true);
+        RestoreDbTask.setPending(this);
     }
 }
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 545f4c3..7b6a5bf 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -145,9 +145,10 @@
         enqueueModelUpdateTask(new AddWorkspaceItemsTask(itemList));
     }
 
-    public ModelWriter getWriter(boolean hasVerticalHotseat, boolean verifyChanges) {
+    public ModelWriter getWriter(boolean hasVerticalHotseat, boolean verifyChanges,
+            @Nullable Callbacks owner) {
         return new ModelWriter(mApp.getContext(), this, mBgDataModel,
-                hasVerticalHotseat, verifyChanges);
+                hasVerticalHotseat, verifyChanges, owner);
     }
 
     @Override
@@ -330,7 +331,7 @@
     public boolean addCallbacksAndLoad(Callbacks callbacks) {
         synchronized (mLock) {
             addCallbacks(callbacks);
-            return startLoader();
+            return startLoader(new Callbacks[] { callbacks });
 
         }
     }
@@ -350,26 +351,32 @@
      * @return true if the page could be bound synchronously.
      */
     public boolean startLoader() {
+        return startLoader(new Callbacks[0]);
+    }
+
+    private boolean startLoader(Callbacks[] newCallbacks) {
         // Enable queue before starting loader. It will get disabled in Launcher#finishBindingItems
         ItemInstallQueue.INSTANCE.get(mApp.getContext())
                 .pauseModelPush(ItemInstallQueue.FLAG_LOADER_RUNNING);
         synchronized (mLock) {
-            // Don't bother to start the thread if we know it's not going to do anything
-            final Callbacks[] callbacksList = getCallbacks();
+            // If there is already one running, tell it to stop.
+            boolean wasRunning = stopLoader();
+            boolean bindDirectly = mModelLoaded && !mIsLoaderTaskRunning;
+            boolean bindAllCallbacks = wasRunning || !bindDirectly || newCallbacks.length == 0;
+            final Callbacks[] callbacksList = bindAllCallbacks ? getCallbacks() : newCallbacks;
+
             if (callbacksList.length > 0) {
                 // Clear any pending bind-runnables from the synchronized load process.
                 for (Callbacks cb : callbacksList) {
                     MAIN_EXECUTOR.execute(cb::clearPendingBinds);
                 }
 
-                // If there is already one running, tell it to stop.
-                stopLoader();
                 LoaderResults loaderResults = new LoaderResults(
                         mApp, mBgDataModel, mBgAllAppsList, callbacksList);
-                if (mModelLoaded && !mIsLoaderTaskRunning) {
+                if (bindDirectly) {
                     // Divide the set of loaded items into those that we are binding synchronously,
                     // and everything else that is to be bound normally (asynchronously).
-                    loaderResults.bindWorkspace();
+                    loaderResults.bindWorkspace(bindAllCallbacks);
                     // For now, continue posting the binding of AllApps as there are other
                     // issues that arise from that.
                     loaderResults.bindAllApps();
@@ -394,7 +401,7 @@
      * If there is already a loader task running, tell it to stop.
      * @return true if an existing loader was stopped.
      */
-    public boolean stopLoader() {
+    private boolean stopLoader() {
         synchronized (mLock) {
             LoaderTask oldTask = mLoaderTask;
             mLoaderTask = null;
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 440e9e3..49f20c6 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -16,7 +16,6 @@
 
 package com.android.launcher3;
 
-import static com.android.launcher3.config.FeatureFlags.MULTI_DB_GRID_MIRATION_ALGO;
 import static com.android.launcher3.provider.LauncherDbUtils.copyTable;
 import static com.android.launcher3.provider.LauncherDbUtils.dropTable;
 import static com.android.launcher3.provider.LauncherDbUtils.tableExists;
@@ -61,7 +60,6 @@
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.DbDowngradeHelper;
-import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.provider.LauncherDbUtils;
 import com.android.launcher3.provider.LauncherDbUtils.SQLiteTransaction;
@@ -153,15 +151,7 @@
             mOpenHelper = DatabaseHelper.createDatabaseHelper(
                     getContext(), false /* forMigration */);
 
-            if (RestoreDbTask.isPending(getContext())) {
-                if (!RestoreDbTask.performRestore(getContext(), mOpenHelper,
-                        new BackupManager(getContext()))) {
-                    mOpenHelper.createEmptyDB(mOpenHelper.getWritableDatabase());
-                }
-                // Set is pending to false irrespective of the result, so that it doesn't get
-                // executed again.
-                RestoreDbTask.setPending(getContext(), false);
-            }
+            RestoreDbTask.restoreIfNeeded(getContext(), mOpenHelper);
         }
     }
 
@@ -434,32 +424,26 @@
                 return null;
             }
             case LauncherSettings.Settings.METHOD_UPDATE_CURRENT_OPEN_HELPER: {
-                if (MULTI_DB_GRID_MIRATION_ALGO.get()) {
-                    Bundle result = new Bundle();
-                    result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE,
-                            prepForMigration(
-                                    InvariantDeviceProfile.INSTANCE.get(getContext()).dbFile,
-                                    Favorites.TMP_TABLE,
-                                    () -> mOpenHelper,
-                                    () -> DatabaseHelper.createDatabaseHelper(
-                                            getContext(), true /* forMigration */)));
-                    return result;
-                }
-                return null;
+                Bundle result = new Bundle();
+                result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE,
+                        prepForMigration(
+                                InvariantDeviceProfile.INSTANCE.get(getContext()).dbFile,
+                                Favorites.TMP_TABLE,
+                                () -> mOpenHelper,
+                                () -> DatabaseHelper.createDatabaseHelper(
+                                        getContext(), true /* forMigration */)));
+                return result;
             }
             case LauncherSettings.Settings.METHOD_PREP_FOR_PREVIEW: {
-                if (MULTI_DB_GRID_MIRATION_ALGO.get()) {
-                    Bundle result = new Bundle();
-                    result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE,
-                            prepForMigration(
-                                    arg /* dbFile */,
-                                    Favorites.PREVIEW_TABLE_NAME,
-                                    () -> DatabaseHelper.createDatabaseHelper(
-                                            getContext(), arg, true /* forMigration */),
-                                    () -> mOpenHelper));
-                    return result;
-                }
-                return null;
+                Bundle result = new Bundle();
+                result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE,
+                        prepForMigration(
+                                arg /* dbFile */,
+                                Favorites.PREVIEW_TABLE_NAME,
+                                () -> DatabaseHelper.createDatabaseHelper(
+                                        getContext(), arg, true /* forMigration */),
+                                () -> mOpenHelper));
+                return result;
             }
             case LauncherSettings.Settings.METHOD_SWITCH_DATABASE: {
                 if (TextUtils.equals(arg, mOpenHelper.getDatabaseName())) return null;
@@ -655,8 +639,7 @@
         static DatabaseHelper createDatabaseHelper(Context context, String dbName,
                 boolean forMigration) {
             if (dbName == null) {
-                dbName = MULTI_DB_GRID_MIRATION_ALGO.get() ? InvariantDeviceProfile.INSTANCE.get(
-                        context).dbFile : LauncherFiles.LAUNCHER_DB;
+                dbName = InvariantDeviceProfile.INSTANCE.get(context).dbFile;
             }
             DatabaseHelper databaseHelper = new DatabaseHelper(context, dbName, forMigration);
             // Table creation sometimes fails silently, which leads to a crash loop.
@@ -667,10 +650,6 @@
                 // This operation is a no-op if the table already exists.
                 databaseHelper.addFavoritesTable(databaseHelper.getWritableDatabase(), true);
             }
-            if (!MULTI_DB_GRID_MIRATION_ALGO.get()) {
-                databaseHelper.mBackupTableExists = tableExists(
-                        databaseHelper.getReadableDatabase(), Favorites.BACKUP_TABLE_NAME);
-            }
             databaseHelper.mHotseatRestoreTableExists = tableExists(
                     databaseHelper.getReadableDatabase(), Favorites.HYBRID_HOTSEAT_BACKUP_TABLE);
 
@@ -852,11 +831,7 @@
                 case 25:
                     convertShortcutsToLauncherActivities(db);
                 case 26:
-                    // QSB was moved to the grid. Clear the first row on screen 0.
-                    if (FeatureFlags.QSB_ON_FIRST_SCREEN &&
-                            !LauncherDbUtils.prepareScreenZeroToHostQsb(mContext, db)) {
-                        break;
-                    }
+                    // QSB was moved to the grid. Ignore overlapping items
                 case 27: {
                     // Update the favorites table so that the screen ids are ordered based on
                     // workspace page rank.
@@ -1090,7 +1065,7 @@
         }
 
         private int initializeMaxScreenId(SQLiteDatabase db) {
-            return getMaxId(db, "SELECT MAX(%1$s) FROM %2$s WHERE %3$s = %4$d",
+            return getMaxId(db, "SELECT MAX(%1$s) FROM %2$s WHERE %3$s = %4$d AND %1$s >= 0",
                     Favorites.SCREEN, Favorites.TABLE_NAME, Favorites.CONTAINER,
                     Favorites.CONTAINER_DESKTOP);
         }
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 3399ce9..7985ab5 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -181,14 +181,6 @@
         return launcher.getNormalOverviewScaleAndOffset();
     }
 
-    public float getTaskbarScale(Launcher launcher) {
-        return launcher.getNormalTaskbarScale();
-    }
-
-    public float getTaskbarTranslationY(Launcher launcher) {
-        return -launcher.getHotseat().getTaskbarOffsetY();
-    }
-
     public float getOverviewFullscreenProgress() {
         return 0;
     }
diff --git a/src/com/android/launcher3/PagedView.java b/src/com/android/launcher3/PagedView.java
index b423871..696e897 100644
--- a/src/com/android/launcher3/PagedView.java
+++ b/src/com/android/launcher3/PagedView.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3;
 
+import static androidx.annotation.VisibleForTesting.PACKAGE_PRIVATE;
+
 import static com.android.launcher3.anim.Interpolators.SCROLL;
 import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
 import static com.android.launcher3.compat.AccessibilityManagerCompat.isObservedEventType;
@@ -48,6 +50,7 @@
 import android.widget.ScrollView;
 
 import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
 
 import com.android.launcher3.compat.AccessibilityManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
@@ -55,6 +58,7 @@
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.touch.PagedOrientationHandler.ChildBounds;
 import com.android.launcher3.util.EdgeEffectCompat;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.views.ActivityContext;
 
@@ -100,6 +104,10 @@
 
     @ViewDebug.ExportedProperty(category = "launcher")
     protected int mCurrentPage;
+    // Difference between current scroll position and mCurrentPage's page scroll. Used to maintain
+    // relative scroll position unchanged in updateCurrentPageScroll. Cleared when snapping to a
+    // page.
+    protected int mCurrentPageScrollDiff;
 
     @ViewDebug.ExportedProperty(category = "launcher")
     protected int mNextPage = INVALID_PAGE;
@@ -230,10 +238,6 @@
         return getChildAt(index);
     }
 
-    protected int indexToPage(int index) {
-        return index;
-    }
-
     /**
      * Updates the scroll of the current page immediately to its final scroll position.  We use this
      * in CustomizePagedView to allow tabs to share the same PagedView while resetting the scroll of
@@ -243,7 +247,7 @@
         // If the current page is invalid, just reset the scroll position to zero
         int newPosition = 0;
         if (0 <= mCurrentPage && mCurrentPage < getPageCount()) {
-            newPosition = getScrollForPage(mCurrentPage);
+            newPosition = getScrollForPage(mCurrentPage) + mCurrentPageScrollDiff;
         }
         mOrientationHandler.set(this, VIEW_SCROLL_TO, newPosition);
         mScroller.startScroll(mScroller.getCurrX(), 0, newPosition - mScroller.getCurrX(), 0);
@@ -285,15 +289,21 @@
         newPage = Utilities.boundToRange(newPage, 0, getPageCount() - 1);
 
         if (getPanelCount() > 1) {
-            // Always return left panel as new page
+            // Always return left most panel as new page
             newPage = getLeftmostVisiblePageForIndex(newPage);
         }
         return newPage;
     }
 
-    private int getLeftmostVisiblePageForIndex(int pageIndex) {
+    /**
+     * In most cases where panelCount is 1, this method will just return the page index that was
+     * passed in.
+     * But for example when two panel home is enabled we might need the leftmost visible page index
+     * because that page is the current page.
+     */
+    public int getLeftmostVisiblePageForIndex(int pageIndex) {
         int panelCount = getPanelCount();
-        return (pageIndex / panelCount) * panelCount;
+        return pageIndex - pageIndex % panelCount;
     }
 
     /**
@@ -304,23 +314,81 @@
     }
 
     /**
+     * Returns an IntSet with the indices of the currently visible pages
+     */
+    @VisibleForTesting(otherwise = PACKAGE_PRIVATE)
+    public IntSet getVisiblePageIndices() {
+        return getPageIndices(mCurrentPage);
+    }
+
+    /**
+     * In case the panelCount is 1 this just returns the same page index in an IntSet.
+     * But in cases where the panelCount > 1 this will return all the page indices that belong
+     * together, i.e. on the Workspace they are next to each other and shown at the same time.
+     */
+    private IntSet getPageIndices(int pageIndex) {
+        // we want to make sure the pageIndex is the leftmost page
+        pageIndex = getLeftmostVisiblePageForIndex(pageIndex);
+
+        IntSet pageIndices = new IntSet();
+        int panelCount = getPanelCount();
+        int pageCount = getPageCount();
+        for (int page = pageIndex; page < pageIndex + panelCount && page < pageCount; page++) {
+            pageIndices.add(page);
+        }
+        return pageIndices;
+    }
+
+    /**
+     * Returns an IntSet with the indices of the neighbour pages that are in the focus direction.
+     */
+    private IntSet getNeighbourPageIndices(int focus) {
+        int panelCount = getPanelCount();
+        // getNextPage is more reliable than getCurrentPage
+        int currentPage = getNextPage();
+
+        int nextPage;
+        if (focus == View.FOCUS_LEFT) {
+            nextPage = currentPage - panelCount;
+        } else if (focus == View.FOCUS_RIGHT) {
+            nextPage = currentPage + panelCount;
+        } else {
+            // no neighbours to other directions
+            return new IntSet();
+        }
+        nextPage = validateNewPage(nextPage);
+        if (nextPage == currentPage) {
+            // We reached the end of the pages
+            return new IntSet();
+        }
+
+        return getPageIndices(nextPage);
+    }
+
+    /**
      * Executes the callback against each visible page
      */
     public void forEachVisiblePage(Consumer<View> callback) {
-        int panelCount = getPanelCount();
-        for (int i = mCurrentPage; i < mCurrentPage + panelCount; i++) {
-            View page = getPageAt(i);
+        getVisiblePageIndices().forEach(pageIndex -> {
+            View page = getPageAt(pageIndex);
             if (page != null) {
                 callback.accept(page);
             }
-        }
+        });
     }
 
     /**
      * Returns true if the view is on one of the current pages, false otherwise.
      */
     public boolean isVisible(View child) {
-        return getLeftmostVisiblePageForIndex(indexOfChild(child)) == mCurrentPage;
+        return isVisible(indexOfChild(child));
+    }
+
+    /**
+     * Returns true if the page with the given index is currently visible, false otherwise.
+     */
+    private boolean isVisible(int pageIndex) {
+        return getLeftmostVisiblePageForIndex(pageIndex) == mCurrentPage;
     }
 
     /**
@@ -424,6 +492,7 @@
      * to provide custom behavior during animation.
      */
     protected void onPageEndTransition() {
+        mCurrentPageScrollDiff = 0;
         AccessibilityManagerCompat.sendScrollFinishedEventToTest(getContext());
         AccessibilityManagerCompat.sendCustomAccessibilityEvent(getPageAt(mCurrentPage),
                 AccessibilityEvent.TYPE_VIEW_FOCUSED, null);
@@ -676,6 +745,7 @@
         final int scrollOffsetStart = mOrientationHandler.getScrollOffsetStart(this, mInsets);
         final int scrollOffsetEnd = mOrientationHandler.getScrollOffsetEnd(this, mInsets);
         boolean pageScrollChanged = false;
+        int panelCount = getPanelCount();
 
         for (int i = startIndex, childStart = scrollOffsetStart; i != endIndex; i += delta) {
             final View child = getPageAt(i);
@@ -693,14 +763,18 @@
                     pageScrollChanged = true;
                     outPageScrolls[i] = pageScroll;
                 }
-                childStart += primaryDimension + mPageSpacing + getChildGap();
+                childStart += primaryDimension + getChildGap();
+
+                // This makes sure that the space is added after the page, not after each panel
+                if (i % panelCount == panelCount - 1) {
+                    childStart += mPageSpacing;
+                }
             }
         }
 
-        int panelCount = getPanelCount();
         if (panelCount > 1) {
             for (int i = 0; i < childCount; i++) {
-                // In case we have multiple panels, always use left panel's page scroll for all
+                // In case we have multiple panels, always use left most panel's page scroll for all
                 // panels on the screen.
                 int adjustedScroll = outPageScrolls[getLeftmostVisiblePageForIndex(i)];
                 if (outPageScrolls[i] != adjustedScroll) {
@@ -779,8 +853,8 @@
 
     @Override
     public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) {
-        int page = indexToPage(indexOfChild(child));
-        if (page != mCurrentPage || !mScroller.isFinished()) {
+        int page = indexOfChild(child);
+        if (!isVisible(page) || !mScroller.isFinished()) {
             if (immediate) {
                 setCurrentPage(page);
             } else {
@@ -819,21 +893,25 @@
                 direction = View.FOCUS_LEFT;
             }
         }
-        if (direction == View.FOCUS_LEFT) {
-            if (getCurrentPage() > 0) {
-                int nextPage = validateNewPage(getCurrentPage() - 1);
-                snapToPage(nextPage);
-                getChildAt(nextPage).requestFocus(direction);
-                return true;
-            }
-        } else if (direction == View.FOCUS_RIGHT) {
-            if (getCurrentPage() < getPageCount() - 1) {
-                int nextPage = validateNewPage(getCurrentPage() + 1);
-                snapToPage(nextPage);
-                getChildAt(nextPage).requestFocus(direction);
-                return true;
+
+        int currentPage = getNextPage();
+        int closestNeighbourIndex = -1;
+        int closestNeighbourDistance = Integer.MAX_VALUE;
+        // Find the closest neighbour page
+        for (int neighbourPageIndex : getNeighbourPageIndices(direction)) {
+            int distance = Math.abs(neighbourPageIndex - currentPage);
+            if (closestNeighbourDistance > distance) {
+                closestNeighbourDistance = distance;
+                closestNeighbourIndex = neighbourPageIndex;
             }
         }
+        if (closestNeighbourIndex != -1) {
+            View page = getPageAt(closestNeighbourIndex);
+            snapToPage(closestNeighbourIndex);
+            page.requestFocus(direction);
+            return true;
+        }
+
         return false;
     }
 
@@ -843,28 +921,12 @@
             return;
         }
 
-        // Add the current page's views as focusable and the next possible page's too. If the
-        // last focus change action was left then the left neighbour's views will be added, and
-        // if it was right then the right neighbour's views will be added.
-        // Unfortunately mCurrentPage can be outdated if there were multiple control actions in a
-        // short period of time, but mNextPage is up to date because it is always updated by
-        // method snapToPage.
-        int nextPage = getNextPage();
-        // XXX-RTL: This will be fixed in a future CL
-        if (nextPage >= 0 && nextPage < getPageCount()) {
-            getPageAt(nextPage).addFocusables(views, direction, focusableMode);
-        }
-        if (direction == View.FOCUS_LEFT) {
-            if (nextPage > 0) {
-                nextPage = validateNewPage(nextPage - 1);
-                getPageAt(nextPage).addFocusables(views, direction, focusableMode);
-            }
-        } else if (direction == View.FOCUS_RIGHT) {
-            if (nextPage < getPageCount() - 1) {
-                nextPage = validateNewPage(nextPage + 1);
-                getPageAt(nextPage).addFocusables(views, direction, focusableMode);
-            }
-        }
+        // nextPage is more reliable when multiple control movements have been done in a short
+        // period of time
+        getPageIndices(getNextPage())
+                .addAll(getNeighbourPageIndices(direction))
+                .forEach(pageIndex ->
+                        getPageAt(pageIndex).addFocusables(views, direction, focusableMode));
     }
 
     /**
@@ -1054,26 +1116,25 @@
 
     protected float getScrollProgress(int screenCenter, View v, int page) {
         final int halfScreenSize = getMeasuredWidth() / 2;
-
         int delta = screenCenter - (getScrollForPage(page) + halfScreenSize);
-        int count = getChildCount();
+        int panelCount = getPanelCount();
+        int pageCount = getChildCount();
 
-        final int totalDistance;
-
-        int adjacentPage = page + 1;
+        int adjacentPage = page + panelCount;
         if ((delta < 0 && !mIsRtl) || (delta > 0 && mIsRtl)) {
-            adjacentPage = page - 1;
+            adjacentPage = page - panelCount;
         }
 
-        if (adjacentPage < 0 || adjacentPage > count - 1) {
-            totalDistance = v.getMeasuredWidth() + mPageSpacing;
+        final int totalDistance;
+        if (adjacentPage < 0 || adjacentPage > pageCount - 1) {
+            totalDistance = (v.getMeasuredWidth() + mPageSpacing) * panelCount;
         } else {
             totalDistance = Math.abs(getScrollForPage(adjacentPage) - getScrollForPage(page));
         }
 
         float scrollProgress = delta / (totalDistance * 1.0f);
         scrollProgress = Math.min(scrollProgress, MAX_SCROLL_PROGRESS);
-        scrollProgress = Math.max(scrollProgress, - MAX_SCROLL_PROGRESS);
+        scrollProgress = Math.max(scrollProgress, -MAX_SCROLL_PROGRESS);
         return scrollProgress;
     }
 
@@ -1120,6 +1181,10 @@
         mAllowOverScroll = enable;
     }
 
+    protected float getSignificantMoveThreshold() {
+        return SIGNIFICANT_MOVE_THRESHOLD;
+    }
+
     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         // Skip touch handling if there are no pages to swipe
@@ -1191,6 +1256,7 @@
                     }
                     delta -= consumed;
                 }
+                delta /= mOrientationHandler.getPrimaryScale(this);
 
                 // Only scroll and update mLastMotionX if we have moved some discrete amount.  We
                 // keep the remainder because we are actually testing if we've moved from the last
@@ -1243,11 +1309,12 @@
 
                 int velocity = (int) mOrientationHandler.getPrimaryVelocity(velocityTracker,
                     mActivePointerId);
-                int delta = (int) (primaryDirection - mDownMotionPrimary);
+                float delta = primaryDirection - mDownMotionPrimary;
+                delta /= mOrientationHandler.getPrimaryScale(this);
                 int pageOrientedSize = mOrientationHandler.getMeasuredSize(getPageAt(mCurrentPage));
 
-                boolean isSignificantMove = Math.abs(delta) > pageOrientedSize *
-                    SIGNIFICANT_MOVE_THRESHOLD;
+                boolean isSignificantMove = Math.abs(delta)
+                        > pageOrientedSize * getSignificantMoveThreshold();
 
                 mTotalMotion += Math.abs(mLastMotion + mLastMotionRemainder - primaryDirection);
                 boolean passedSlop = mAllowEasyFling || mTotalMotion > mPageSlop;
@@ -1439,8 +1506,8 @@
             setCurrentPage(nextPage);
         }
 
-        int page = indexToPage(indexOfChild(child));
-        if (page >= 0 && page != getCurrentPage() && !isInTouchMode()) {
+        int page = indexOfChild(child);
+        if (page >= 0 && !isVisible(page) && !isInTouchMode()) {
             snapToPage(page);
         }
     }
@@ -1571,7 +1638,7 @@
             return false;
         }
 
-        if (FeatureFlags.IS_STUDIO_BUILD) {
+        if (FeatureFlags.IS_STUDIO_BUILD && !Utilities.IS_RUNNING_IN_TEST_HARNESS) {
             duration *= Settings.Global.getFloat(getContext().getContentResolver(),
                     Settings.Global.WINDOW_ANIMATION_SCALE, 1);
         }
@@ -1610,7 +1677,7 @@
 
     public boolean scrollLeft() {
         if (getNextPage() > 0) {
-            snapToPage(getNextPage() - 1);
+            snapToPage(getNextPage() - getPanelCount());
             return true;
         }
         return mAllowOverScroll;
@@ -1618,7 +1685,7 @@
 
     public boolean scrollRight() {
         if (getNextPage() < getChildCount() - 1) {
-            snapToPage(getNextPage() + 1);
+            snapToPage(getNextPage() + getPanelCount());
             return true;
         }
         return mAllowOverScroll;
diff --git a/src/com/android/launcher3/ShortcutAndWidgetContainer.java b/src/com/android/launcher3/ShortcutAndWidgetContainer.java
index 519b63d..bebbf4f 100644
--- a/src/com/android/launcher3/ShortcutAndWidgetContainer.java
+++ b/src/com/android/launcher3/ShortcutAndWidgetContainer.java
@@ -31,7 +31,7 @@
 import com.android.launcher3.CellLayout.ContainerType;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.views.ActivityContext;
-import com.android.launcher3.widget.LauncherAppWidgetHostView;
+import com.android.launcher3.widget.NavigableAppWidgetHostView;
 
 public class ShortcutAndWidgetContainer extends ViewGroup implements FolderIcon.FolderIconParent {
     static final String TAG = "ShortcutAndWidgetContainer";
@@ -104,9 +104,9 @@
 
     public void setupLp(View child) {
         CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
-        if (child instanceof LauncherAppWidgetHostView) {
+        if (child instanceof NavigableAppWidgetHostView) {
             DeviceProfile profile = mActivity.getDeviceProfile();
-            ((LauncherAppWidgetHostView) child).getWidgetInset(profile, mTempRect);
+            ((NavigableAppWidgetHostView) child).getWidgetInset(profile, mTempRect);
             lp.setup(mCellWidth, mCellHeight, invertLayoutHorizontally(), mCountX, mCountY,
                     profile.appWidgetScale.x, profile.appWidgetScale.y, mBorderSpacing, mTempRect);
         } else {
@@ -129,8 +129,8 @@
         CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
         final DeviceProfile dp = mActivity.getDeviceProfile();
 
-        if (child instanceof LauncherAppWidgetHostView) {
-            ((LauncherAppWidgetHostView) child).getWidgetInset(dp, mTempRect);
+        if (child instanceof NavigableAppWidgetHostView) {
+            ((NavigableAppWidgetHostView) child).getWidgetInset(dp, mTempRect);
             lp.setup(mCellWidth, mCellHeight, invertLayoutHorizontally(), mCountX, mCountY,
                     dp.appWidgetScale.x, dp.appWidgetScale.y, mBorderSpacing, mTempRect);
         } else {
@@ -178,16 +178,16 @@
      */
     public void layoutChild(View child) {
         CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
-        if (child instanceof LauncherAppWidgetHostView) {
-            LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) child;
+        if (child instanceof NavigableAppWidgetHostView) {
+            NavigableAppWidgetHostView nahv = (NavigableAppWidgetHostView) child;
 
             // Scale and center the widget to fit within its cells.
             DeviceProfile profile = mActivity.getDeviceProfile();
             float scaleX = profile.appWidgetScale.x;
             float scaleY = profile.appWidgetScale.y;
 
-            lahv.setScaleToFit(Math.min(scaleX, scaleY));
-            lahv.setTranslationForCentering(-(lp.width - (lp.width * scaleX)) / 2.0f,
+            nahv.setScaleToFit(Math.min(scaleX, scaleY));
+            nahv.setTranslationForCentering(-(lp.width - (lp.width * scaleX)) / 2.0f,
                     -(lp.height - (lp.height * scaleY)) / 2.0f);
         }
 
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 75f6278..b92cf09 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -85,6 +85,7 @@
 import com.android.launcher3.shortcuts.ShortcutRequest;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.PackageManagerHelper;
+import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
 import com.android.launcher3.widget.PendingAddShortcutInfo;
 
@@ -380,6 +381,21 @@
     }
 
     /**
+     * Similar to {@link #scaleRectAboutCenter(Rect, float)} except this allows different scales
+     * for X and Y
+     */
+    public static void scaleRectFAboutCenter(RectF r, float scaleX, float scaleY) {
+        float px = r.centerX();
+        float py = r.centerY();
+        r.offset(-px, -py);
+        r.left = r.left * scaleX;
+        r.top = r.top * scaleY;
+        r.right = r.right * scaleX;
+        r.bottom = r.bottom * scaleY;
+        r.offset(px, py);
+    }
+
+    /**
      * Maps t from one range to another range.
      * @param t The value to map.
      * @param fromMin The lower bound of the range that t is being mapped from.
@@ -632,21 +648,6 @@
         handler.sendMessage(msg);
     }
 
-    /**
-     * Parses a string encoded using {@link #getPointString(int, int)}
-     */
-    public static Point parsePoint(String point) {
-        String[] split = point.split(",");
-        return new Point(Integer.parseInt(split[0]), Integer.parseInt(split[1]));
-    }
-
-    /**
-     * Encodes a point to string to that it can be persisted atomically.
-     */
-    public static String getPointString(int x, int y) {
-        return String.format(Locale.ENGLISH, "%d,%d", x, y);
-    }
-
     public static void unregisterReceiverSafely(Context context, BroadcastReceiver receiver) {
         try {
             context.unregisterReceiver(receiver);
@@ -659,25 +660,26 @@
      * @param outObj this is set to the internal data associated with {@param info},
      *               eg {@link LauncherActivityInfo} or {@link ShortcutInfo}.
      */
-    public static Drawable getFullDrawable(Launcher launcher, ItemInfo info, int width, int height,
+    public static Drawable getFullDrawable(Context context, ItemInfo info, int width, int height,
             Object[] outObj) {
-        Drawable icon = loadFullDrawableWithoutTheme(launcher, info, width, height, outObj);
+        Drawable icon = loadFullDrawableWithoutTheme(context, info, width, height, outObj);
         if (icon instanceof BitmapInfo.Extender) {
-            icon = ((BitmapInfo.Extender) icon).getThemedDrawable(launcher);
+            icon = ((BitmapInfo.Extender) icon).getThemedDrawable(context);
         }
         return icon;
     }
 
-    private static Drawable loadFullDrawableWithoutTheme(Launcher launcher, ItemInfo info,
+    private static Drawable loadFullDrawableWithoutTheme(Context context, ItemInfo info,
             int width, int height, Object[] outObj) {
-        LauncherAppState appState = LauncherAppState.getInstance(launcher);
+        ActivityContext activity = ActivityContext.lookupContext(context);
+        LauncherAppState appState = LauncherAppState.getInstance(context);
         if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) {
-            LauncherActivityInfo activityInfo = launcher.getSystemService(LauncherApps.class)
+            LauncherActivityInfo activityInfo = context.getSystemService(LauncherApps.class)
                     .resolveActivity(info.getIntent(), info.user);
             outObj[0] = activityInfo;
-            return activityInfo == null ? null : LauncherAppState.getInstance(launcher)
+            return activityInfo == null ? null : LauncherAppState.getInstance(context)
                     .getIconProvider().getIcon(
-                            activityInfo, launcher.getDeviceProfile().inv.fillResIconDpi);
+                            activityInfo, activity.getDeviceProfile().inv.fillResIconDpi);
         } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
             if (info instanceof PendingAddShortcutInfo) {
                 ShortcutConfigActivityInfo activityInfo =
@@ -686,18 +688,18 @@
                 return activityInfo.getFullResIcon(appState.getIconCache());
             }
             List<ShortcutInfo> si = ShortcutKey.fromItemInfo(info)
-                    .buildRequest(launcher)
+                    .buildRequest(context)
                     .query(ShortcutRequest.ALL);
             if (si.isEmpty()) {
                 return null;
             } else {
                 outObj[0] = si.get(0);
-                return ShortcutCachingLogic.getIcon(launcher, si.get(0),
+                return ShortcutCachingLogic.getIcon(context, si.get(0),
                         appState.getInvariantDeviceProfile().fillResIconDpi);
             }
         } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER) {
             FolderAdaptiveIcon icon = FolderAdaptiveIcon.createFolderAdaptiveIcon(
-                    launcher, info.id, new Point(width, height));
+                    activity, info.id, new Point(width, height));
             if (icon == null) {
                 return null;
             }
@@ -715,8 +717,8 @@
      * badge. When dragged from workspace or folder, it may contain app AND/OR work profile badge
      **/
     @TargetApi(Build.VERSION_CODES.O)
-    public static Drawable getBadge(Launcher launcher, ItemInfo info, Object obj) {
-        LauncherAppState appState = LauncherAppState.getInstance(launcher);
+    public static Drawable getBadge(Context context, ItemInfo info, Object obj) {
+        LauncherAppState appState = LauncherAppState.getInstance(context);
         int iconSize = appState.getInvariantDeviceProfile().iconBitmapSize;
         if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
             boolean iconBadged = (info instanceof ItemInfoWithIcon)
@@ -736,7 +738,7 @@
         } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER) {
             return ((FolderAdaptiveIcon) obj).getBadge();
         } else {
-            return launcher.getPackageManager()
+            return context.getPackageManager()
                     .getUserBadgedIcon(new FixedSizeEmptyDrawable(iconSize), info.user);
         }
     }
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 5bdc402..d162abd 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -63,6 +63,8 @@
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.Toast;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.accessibility.AccessibleDragListenerAdapter;
 import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper;
 import com.android.launcher3.anim.Interpolators;
@@ -79,10 +81,10 @@
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.folder.PreviewBackground;
 import com.android.launcher3.graphics.DragPreviewProvider;
-import com.android.launcher3.graphics.PreloadIconDrawable;
 import com.android.launcher3.icons.BitmapRenderer;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.logger.LauncherAtom;
+import com.android.launcher3.logging.InstanceId;
 import com.android.launcher3.logging.StatsLogManager;
 import com.android.launcher3.logging.StatsLogManager.LauncherEvent;
 import com.android.launcher3.model.data.AppInfo;
@@ -99,8 +101,10 @@
 import com.android.launcher3.util.EdgeEffectCompat;
 import com.android.launcher3.util.Executors;
 import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.ItemInfoMatcher;
+import com.android.launcher3.util.LauncherBindableItemsContainer;
 import com.android.launcher3.util.OverlayEdgeEffect;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.RunnableList;
@@ -119,7 +123,6 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashSet;
 import java.util.List;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
@@ -132,7 +135,7 @@
 public class Workspace extends PagedView<WorkspacePageIndicator>
         implements DropTarget, DragSource, View.OnTouchListener,
         DragController.DragListener, Insettable, StateHandler<LauncherState>,
-        WorkspaceLayoutManager {
+        WorkspaceLayoutManager, LauncherBindableItemsContainer {
 
     /** The value that {@link #mTransitionProgress} must be greater than for
      * {@link #transitionStateShouldAllowDrop()} to return true. */
@@ -194,7 +197,6 @@
     private final int[] mTempXY = new int[2];
     private final float[] mTempFXY = new float[2];
     @Thunk float[] mDragViewVisualCenter = new float[2];
-    private final float[] mTempTouchCoordinates = new float[2];
 
     private SpringLoadedDragController mSpringLoadedDragController;
 
@@ -204,8 +206,6 @@
 
     private boolean mStripScreensOnPageStopMoving = false;
 
-    private DragPreviewProvider mOutlineProvider = null;
-
     private boolean mWorkspaceFadeInAdjacentScreens;
 
     final WallpaperOffsetInterpolator mWallpaperOffset;
@@ -312,9 +312,7 @@
         // Increase our bottom insets so we don't overlap with the taskbar.
         mInsets.bottom += grid.nonOverlappingTaskbarInset;
 
-        if (isTwoPanelEnabled()) {
-            setPageSpacing(0); // we have two pages and we don't want any spacing
-        } else if (mWorkspaceFadeInAdjacentScreens) {
+        if (mWorkspaceFadeInAdjacentScreens) {
             // In landscape mode the page spacing is set to the default.
             setPageSpacing(grid.edgeMarginPx);
         } else {
@@ -326,10 +324,13 @@
             setPageSpacing(Math.max(maxInsets, maxPadding));
         }
 
+        updateWorkspaceScreensPadding();
+    }
+
+    private void updateWorkspaceScreensPadding() {
+        DeviceProfile grid = mLauncher.getDeviceProfile();
         int paddingLeftRight = grid.cellLayoutPaddingLeftRightPx;
         int paddingBottom = grid.cellLayoutBottomPaddingPx;
-        int twoPanelLandscapeSidePadding = paddingLeftRight * 2;
-        int twoPanelPortraitSidePadding = paddingLeftRight / 2;
 
         int panelCount = getPanelCount();
         for (int i = mWorkspaceScreens.size() - 1; i >= 0; i--) {
@@ -337,13 +338,11 @@
             int paddingRight = paddingLeftRight;
             if (panelCount > 1) {
                 if (i % panelCount == 0) { // left side panel
-                    paddingLeft = grid.isLandscape ? twoPanelLandscapeSidePadding
-                            : twoPanelPortraitSidePadding;
+                    paddingLeft = paddingLeftRight;
                     paddingRight = 0;
                 } else if (i % panelCount == panelCount - 1) { // right side panel
                     paddingLeft = 0;
-                    paddingRight = grid.isLandscape ? twoPanelLandscapeSidePadding
-                            : twoPanelPortraitSidePadding;
+                    paddingRight = paddingLeftRight;
                 } else { // middle panel
                     paddingLeft = 0;
                     paddingRight = 0;
@@ -462,7 +461,7 @@
     }
 
     @Override
-    protected int getPanelCount() {
+    public int getPanelCount() {
         return isTwoPanelEnabled() ? 2 : super.getPanelCount();
     }
 
@@ -491,7 +490,6 @@
         });
 
         mDragInfo = null;
-        mOutlineProvider = null;
         mDragSourceInternal = null;
     }
 
@@ -552,8 +550,9 @@
         if (!FeatureFlags.QSB_ON_FIRST_SCREEN) {
             return;
         }
+
         // Add the first page
-        CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, 0);
+        CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, getChildCount());
         // Always add a QSB on the first screen.
         if (qsb == null) {
             // In transposed layout, we add the QSB in the Grid. As workspace does not touch the
@@ -622,10 +621,6 @@
         // created CellLayout.
         CellLayout newScreen = (CellLayout) LayoutInflater.from(getContext()).inflate(
                         R.layout.workspace_screen, this, false /* attachToRoot */);
-        DeviceProfile grid = mLauncher.getDeviceProfile();
-        int paddingLeftRight = grid.cellLayoutPaddingLeftRightPx;
-        int paddingBottom = grid.cellLayoutBottomPaddingPx;
-        newScreen.setPadding(paddingLeftRight, 0, paddingLeftRight, paddingBottom);
 
         mWorkspaceScreens.put(screenId, newScreen);
         mScreenOrder.add(insertIndex, screenId);
@@ -634,6 +629,7 @@
                 mLauncher.getStateManager().getState(), newScreen, insertIndex);
 
         updatePageScrollValues();
+        updateWorkspaceScreensPadding();
         return newScreen;
     }
 
@@ -785,6 +781,10 @@
         return indexOfChild(mWorkspaceScreens.get(screenId));
     }
 
+    public IntSet getCurrentPageScreenIds() {
+        return IntSet.wrap(getScreenIdForPageIndex(getCurrentPage()));
+    }
+
     public int getScreenIdForPageIndex(int index) {
         if (0 <= index && index < mScreenOrder.size()) {
             return mScreenOrder.get(index);
@@ -1322,11 +1322,7 @@
                 position[0], position[1], 0, null);
     }
 
-    public void prepareDragWithProvider(DragPreviewProvider outlineProvider) {
-        mOutlineProvider = outlineProvider;
-    }
-
-    private void onStartStateTransition(LauncherState state) {
+    private void onStartStateTransition() {
         mIsSwitchingState = true;
         mTransitionProgress = 0;
 
@@ -1347,7 +1343,7 @@
      */
     @Override
     public void setState(LauncherState toState) {
-        onStartStateTransition(toState);
+        onStartStateTransition();
         mStateTransitionAnimation.setState(toState);
         onEndStateTransition();
     }
@@ -1358,7 +1354,7 @@
     @Override
     public void setStateWithAnimation(
             LauncherState toState, StateAnimationConfig config, PendingAnimation animation) {
-        StateTransitionListener listener = new StateTransitionListener(toState);
+        StateTransitionListener listener = new StateTransitionListener();
         mStateTransitionAnimation.setStateWithAnimation(toState, config, animation);
 
         // Invalidate the pages now, so that we have the visible pages before the
@@ -1467,8 +1463,6 @@
             icon.clearPressedBackground();
         }
 
-        mOutlineProvider = previewProvider;
-
         if (draggableView == null && child instanceof DraggableView) {
             draggableView = (DraggableView) child;
         }
@@ -1610,7 +1604,7 @@
 
             // Don't accept the drop if there's no room for the item
             if (!foundCell) {
-                onNoCellFound(dropTargetLayout);
+                onNoCellFound(dropTargetLayout, d.dragInfo, d.logInstanceId);
                 return false;
             }
         }
@@ -1778,19 +1772,16 @@
 
         boolean droppedOnOriginalCell = false;
 
-        int snapScreen = -1;
+        boolean snappedToNewPage = false;
         boolean resizeOnDrop = false;
+        Runnable onCompleteRunnable = null;
         if (d.dragSource != this || mDragInfo == null) {
             final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0],
                     (int) mDragViewVisualCenter[1] };
             onDropExternal(touchXY, dropTargetLayout, d);
         } else {
             final View cell = mDragInfo.cell;
-            final DragView dragView = d.dragView;
             boolean droppedOnOriginalCellDuringTransition = false;
-            Runnable onCompleteRunnable = dragView::resumeColorExtraction;
-
-            dragView.disableColorExtraction();
 
             if (dropTargetLayout != null && !d.cancelled) {
                 // Move internally
@@ -1863,11 +1854,14 @@
                 }
 
                 if (foundCell) {
-                    if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) {
-                        snapScreen = getPageIndexForScreenId(screenId);
+                    int targetScreenIndex = getPageIndexForScreenId(screenId);
+                    int snapScreen = getLeftmostVisiblePageForIndex(targetScreenIndex);
+                    // On large screen devices two pages can be shown at the same time, and snap
+                    // isn't needed if the source and target screens appear at the same time
+                    if (snapScreen != mCurrentPage && !hasMovedIntoHotseat) {
                         snapToPage(snapScreen);
+                        snappedToNewPage = true;
                     }
-
                     final ItemInfo info = (ItemInfo) cell.getTag();
                     if (hasMovedLayouts) {
                         // Reparent the view
@@ -1901,9 +1895,7 @@
                         AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo();
                         if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE
                                 && !options.isAccessibleDrag) {
-                            final Runnable previousRunnable = onCompleteRunnable;
                             onCompleteRunnable = () -> {
-                                previousRunnable.run();
                                 if (!isPageInTransition()) {
                                     AppWidgetResizeFrame.showForWidget(hostView, cellLayout);
                                 }
@@ -1914,7 +1906,7 @@
                             lp.cellX, lp.cellY, item.spanX, item.spanY);
                 } else {
                     if (!returnToOriginalCellToPreventShuffling) {
-                        onNoCellFound(dropTargetLayout);
+                        onNoCellFound(dropTargetLayout, d.dragInfo, d.logInstanceId);
                     }
                     if (mDragInfo.cell instanceof LauncherAppWidgetHostView) {
                         d.dragView.detachContentView(/* reattachToPreviousParent= */ true);
@@ -1961,7 +1953,7 @@
                             ANIMATE_INTO_POSITION_AND_DISAPPEAR;
                     animateWidgetDrop(info, parent, d.dragView, null, animationType, cell, false);
                 } else {
-                    int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION;
+                    int duration = snappedToNewPage ? ADJACENT_SCREEN_DROP_DURATION : -1;
                     mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration,
                             this);
                 }
@@ -1972,7 +1964,7 @@
             parent.onDropChild(cell);
 
             mLauncher.getStateManager().goToState(NORMAL, SPRING_LOADED_EXIT_DELAY,
-                    forSuccessCallback(onCompleteRunnable));
+                    onCompleteRunnable == null ? null : forSuccessCallback(onCompleteRunnable));
             mStatsLogManager.logger().withItemInfo(d.dragInfo).withInstanceId(d.logInstanceId)
                     .log(LauncherEvent.LAUNCHER_ITEM_DROP_COMPLETED);
         }
@@ -1982,10 +1974,16 @@
         }
     }
 
-    public void onNoCellFound(View dropTargetLayout) {
+    public void onNoCellFound(
+            View dropTargetLayout, ItemInfo itemInfo, @Nullable InstanceId logInstanceId) {
         int strId = mLauncher.isHotseatLayout(dropTargetLayout)
                 ? R.string.hotseat_out_of_space : R.string.out_of_space;
         Toast.makeText(mLauncher, mLauncher.getString(strId), Toast.LENGTH_SHORT).show();
+        StatsLogManager.StatsLogger logger = mStatsLogManager.logger().withItemInfo(itemInfo);
+        if (logInstanceId != null) {
+            logger = logger.withInstanceId(logInstanceId);
+        }
+        logger.log(LauncherEvent.LAUNCHER_ITEM_DROP_FAILED_INSUFFICIENT_SPACE);
     }
 
     /**
@@ -2290,25 +2288,16 @@
 
         int nextPage = getNextPage();
         if (layout == null && !isPageInTransition()) {
-            // Check if the item is dragged over currentPage - 1 page
-            mTempTouchCoordinates[0] = Math.min(centerX, d.x);
-            mTempTouchCoordinates[1] = d.y;
-            layout = verifyInsidePage(nextPage + (mIsRtl ? 1 : -1), mTempTouchCoordinates);
+            layout = verifyInsidePage(nextPage + (mIsRtl ? 1 : -1), Math.min(centerX, d.x), d.y);
         }
 
         if (layout == null && !isPageInTransition()) {
-            // Check if the item is dragged over currentPage + 1 page
-            mTempTouchCoordinates[0] = Math.max(centerX, d.x);
-            mTempTouchCoordinates[1] = d.y;
-            layout = verifyInsidePage(nextPage + (mIsRtl ? -1 : 1), mTempTouchCoordinates);
+            layout = verifyInsidePage(nextPage + (mIsRtl ? -1 : 1), Math.max(centerX, d.x), d.y);
         }
 
         // If two panel is enabled, users can also drag items to currentPage + 2
         if (isTwoPanelEnabled() && layout == null && !isPageInTransition()) {
-            // Check if the item is dragged over currentPage + 2 page
-            mTempTouchCoordinates[0] = Math.max(centerX, d.x);
-            mTempTouchCoordinates[1] = d.y;
-            layout = verifyInsidePage(nextPage + (mIsRtl ? -2 : 2), mTempTouchCoordinates);
+            layout = verifyInsidePage(nextPage + (mIsRtl ? -2 : 2), Math.max(centerX, d.x), d.y);
         }
 
         // Always pick the current page.
@@ -2326,12 +2315,11 @@
     /**
      * Returns the child CellLayout if the point is inside the page coordinates, null otherwise.
      */
-    private CellLayout verifyInsidePage(int pageNo, float[] touchXy)  {
+    private CellLayout verifyInsidePage(int pageNo, float x, float y) {
         if (pageNo >= 0 && pageNo < getPageCount()) {
             CellLayout cl = (CellLayout) getChildAt(pageNo);
-            mapPointFromSelfToChild(cl, touchXy);
-            if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() &&
-                    touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) {
+            if (x >= cl.getLeft() && x <= cl.getRight()
+                    && y >= cl.getTop() && y <= cl.getBottom()) {
                 // This point is inside the cell layout
                 return cl;
             }
@@ -2690,9 +2678,6 @@
     public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, final DragView dragView,
             final Runnable onCompleteRunnable, int animationType, final View finalView,
             boolean external) {
-        Rect from = new Rect();
-        mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from);
-
         int[] finalPos = new int[2];
         float scaleXY[] = new float[2];
         boolean scalePreview = !(info instanceof PendingAddShortcutInfo);
@@ -2736,8 +2721,8 @@
                     }
                 }
             };
-            dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0],
-                    finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle,
+            dragLayer.animateViewIntoPosition(dragView, finalPos[0],
+                    finalPos[1], 1, scaleXY[0], scaleXY[1], onComplete, endStyle,
                     duration, this);
         }
     }
@@ -2965,9 +2950,9 @@
      * @param user The user of the app to match.
      */
     public View getFirstMatchForAppClose(int preferredItemId, String packageName, UserHandle user) {
-        final Workspace.ItemOperator preferredItem = (ItemInfo info, View view) ->
+        final ItemOperator preferredItem = (ItemInfo info, View view) ->
                 info != null && info.id == preferredItemId;
-        final Workspace.ItemOperator preferredItemInFolder = (info, view) -> {
+        final ItemOperator preferredItemInFolder = (info, view) -> {
             if (info instanceof FolderInfo) {
                 FolderInfo folderInfo = (FolderInfo) info;
                 for (WorkspaceItemInfo shortcutInfo : folderInfo.contents) {
@@ -2978,14 +2963,14 @@
             }
             return false;
         };
-        final Workspace.ItemOperator packageAndUserAndApp = (ItemInfo info, View view) ->
+        final ItemOperator packageAndUserAndApp = (ItemInfo info, View view) ->
                 info != null
                         && info.itemType == ITEM_TYPE_APPLICATION
                         && info.user.equals(user)
                         && info.getTargetComponent() != null
                         && TextUtils.equals(info.getTargetComponent().getPackageName(),
                                 packageName);
-        final Workspace.ItemOperator packageAndUserAndAppInFolder = (info, view) -> {
+        final ItemOperator packageAndUserAndAppInFolder = (info, view) -> {
             if (info instanceof FolderInfo) {
                 FolderInfo folderInfo = (FolderInfo) info;
                 for (WorkspaceItemInfo shortcutInfo : folderInfo.contents) {
@@ -3104,22 +3089,7 @@
         stripEmptyScreens();
     }
 
-    public interface ItemOperator {
-        /**
-         * Process the next itemInfo, possibly with side-effect on the next item.
-         *
-         * @param info info for the shortcut
-         * @param view view for the shortcut
-         * @return true if done, false to continue the map
-         */
-        boolean evaluate(ItemInfo info, View view);
-    }
-
-    /**
-     * Map the operator over the shortcuts and widgets, return the first-non-null value.
-     *
-     * @param op the operator to map over the shortcuts
-     */
+    @Override
     public void mapOverItems(ItemOperator op) {
         for (CellLayout layout : getWorkspaceAndHotseatCellLayouts()) {
             if (mapOverCellLayout(layout, op) != null) {
@@ -3145,31 +3115,6 @@
         return null;
     }
 
-    void updateShortcuts(List<WorkspaceItemInfo> shortcuts) {
-        final HashSet<WorkspaceItemInfo> updates = new HashSet<>(shortcuts);
-        ItemOperator op = (info, v) -> {
-            if (v instanceof BubbleTextView && updates.contains(info)) {
-                WorkspaceItemInfo si = (WorkspaceItemInfo) info;
-                BubbleTextView shortcut = (BubbleTextView) v;
-                Drawable oldIcon = shortcut.getIcon();
-                boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable)
-                        && ((PreloadIconDrawable) oldIcon).hasNotCompleted();
-                shortcut.applyFromWorkspaceItem(si, si.isPromise() != oldPromiseState);
-            } else if (info instanceof FolderInfo && v instanceof FolderIcon) {
-                ((FolderIcon) v).updatePreviewItems(updates::contains);
-            }
-
-            // Iterate all items
-            return false;
-        };
-
-        mapOverItems(op);
-        Folder openFolder = Folder.getOpen(mLauncher);
-        if (openFolder != null) {
-            openFolder.iterateOverItems(op);
-        }
-    }
-
     public void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
         final PackageUserKey packageUserKey = new PackageUserKey(null, null);
         Predicate<ItemInfo> matcher = info -> !packageUserKey.updateFromItemInfo(info)
@@ -3209,28 +3154,6 @@
         removeItemsByMatcher(matcher);
     }
 
-    public void updateRestoreItems(final HashSet<ItemInfo> updates) {
-        ItemOperator op = (info, v) -> {
-            if (info instanceof WorkspaceItemInfo && v instanceof BubbleTextView
-                    && updates.contains(info)) {
-                ((BubbleTextView) v).applyLoadingState(false /* promiseStateChanged */);
-            } else if (v instanceof PendingAppWidgetHostView
-                    && info instanceof LauncherAppWidgetInfo
-                    && updates.contains(info)) {
-                ((PendingAppWidgetHostView) v).applyState();
-            } else if (v instanceof FolderIcon && info instanceof FolderInfo) {
-                ((FolderIcon) v).updatePreviewItems(updates::contains);
-            }
-            // process all the shortcuts
-            return false;
-        };
-        mapOverItems(op);
-        Folder folder = Folder.getOpen(mLauncher);
-        if (folder != null) {
-            folder.iterateOverItems(op);
-        }
-    }
-
     public void widgetsRestored(final ArrayList<LauncherAppWidgetInfo> changedInfo) {
         if (!changedInfo.isEmpty()) {
             DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo,
@@ -3395,12 +3318,6 @@
     private class StateTransitionListener extends AnimatorListenerAdapter
             implements AnimatorUpdateListener {
 
-        private final LauncherState mToState;
-
-        StateTransitionListener(LauncherState toState) {
-            mToState = toState;
-        }
-
         @Override
         public void onAnimationUpdate(ValueAnimator anim) {
             mTransitionProgress = anim.getAnimatedFraction();
@@ -3408,7 +3325,7 @@
 
         @Override
         public void onAnimationStart(Animator animation) {
-            onStartStateTransition(mToState);
+            onStartStateTransition();
         }
 
         @Override
diff --git a/src/com/android/launcher3/anim/PendingAnimation.java b/src/com/android/launcher3/anim/PendingAnimation.java
index 01f7de6..3ab893b 100644
--- a/src/com/android/launcher3/anim/PendingAnimation.java
+++ b/src/com/android/launcher3/anim/PendingAnimation.java
@@ -56,6 +56,10 @@
         mAnim = new AnimatorSet();
     }
 
+    public long getDuration() {
+        return mDuration;
+    }
+
     /**
      * Utility method to sent an interpolator on an animation and add it to the list
      */
diff --git a/src/com/android/launcher3/compat/AccessibilityManagerCompat.java b/src/com/android/launcher3/compat/AccessibilityManagerCompat.java
index 30c3417..97052b2 100644
--- a/src/com/android/launcher3/compat/AccessibilityManagerCompat.java
+++ b/src/com/android/launcher3/compat/AccessibilityManagerCompat.java
@@ -89,6 +89,14 @@
         sendEventToTest(accessibilityManager, context, TestProtocol.PAUSE_DETECTED_MESSAGE, null);
     }
 
+    public static void sendDismissAnimationEndsEventToTest(Context context) {
+        final AccessibilityManager accessibilityManager = getAccessibilityManagerForTest(context);
+        if (accessibilityManager == null) return;
+
+        sendEventToTest(accessibilityManager, context, TestProtocol.DISMISS_ANIMATION_ENDS_MESSAGE,
+                null);
+    }
+
     private static void sendEventToTest(
             AccessibilityManager accessibilityManager,
             Context context, String eventTag, Bundle data) {
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index f066dc1..38a957d 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -144,9 +144,6 @@
     public static final BooleanFlag ENABLE_DEEP_SHORTCUT_ICON_CACHE = getDebugFlag(
             "ENABLE_DEEP_SHORTCUT_ICON_CACHE", true, "R/W deep shortcut in IconCache");
 
-    public static final BooleanFlag MULTI_DB_GRID_MIRATION_ALGO = getDebugFlag(
-            "MULTI_DB_GRID_MIRATION_ALGO", true, "Use the multi-db grid migration algorithm");
-
     public static final BooleanFlag ENABLE_THEMED_ICONS = getDebugFlag(
             "ENABLE_THEMED_ICONS", true, "Enable themed icons on workspace");
 
@@ -220,14 +217,17 @@
             + "predictions to be updated while they are visible to the user.");
 
     public static final BooleanFlag ENABLE_TASKBAR = getDebugFlag(
-            "ENABLE_TASKBAR", false, "Allows a system Taskbar to be shown on larger devices.");
+            "ENABLE_TASKBAR", true, "Allows a system Taskbar to be shown on larger devices.");
+
+    public static final BooleanFlag ENABLE_TASKBAR_EDU = getDebugFlag("ENABLE_TASKBAR_EDU", false,
+            "Enables showing taskbar education the first time an app is opened.");
 
     public static final BooleanFlag ENABLE_OVERVIEW_GRID = getDebugFlag(
-            "ENABLE_OVERVIEW_GRID", false, "Uses grid overview layout. "
+            "ENABLE_OVERVIEW_GRID", true, "Uses grid overview layout. "
             + "Only applicable on large screen devices.");
 
     public static final BooleanFlag ENABLE_TWO_PANEL_HOME = getDebugFlag(
-            "ENABLE_TWO_PANEL_HOME", false,
+            "ENABLE_TWO_PANEL_HOME", true,
             "Uses two panel on home screen. Only applicable on large screen devices.");
 
     public static final BooleanFlag ENABLE_SCRIM_FOR_APP_LAUNCH = getDebugFlag(
@@ -254,6 +254,14 @@
             "ENABLE_WALLPAPER_SCRIM", false,
             "Enables scrim over wallpaper for text protection.");
 
+    public static final BooleanFlag WIDGETS_IN_LAUNCHER_PREVIEW = getDebugFlag(
+            "WIDGETS_IN_LAUNCHER_PREVIEW", true,
+            "Enables widgets in Launcher preview for the Wallpaper app.");
+
+    public static final BooleanFlag QUICK_WALLPAPER_PICKER = getDebugFlag(
+            "QUICK_WALLPAPER_PICKER", false,
+            "Shows quick wallpaper picker in long-press menu");
+
     public static void initialize(Context context) {
         synchronized (sDebugFlags) {
             for (DebugFlag flag : sDebugFlags) {
@@ -291,7 +299,7 @@
     public static class BooleanFlag {
 
         public final String key;
-        public boolean defaultValue;
+        public final boolean defaultValue;
 
         public BooleanFlag(String key, boolean defaultValue) {
             this.key = key;
@@ -310,16 +318,12 @@
         protected StringBuilder appendProps(StringBuilder src) {
             return src.append(key).append(", defaultValue=").append(defaultValue);
         }
-
-        public void addChangeListener(Context context, Runnable r) { }
-
-        public void removeChangeListener(Runnable r) {}
     }
 
     public static class DebugFlag extends BooleanFlag {
 
         public final String description;
-        private boolean mCurrentValue;
+        protected boolean mCurrentValue;
 
         public DebugFlag(String key, boolean defaultValue, String description) {
             super(key, defaultValue);
diff --git a/src/com/android/launcher3/dragndrop/AddItemActivity.java b/src/com/android/launcher3/dragndrop/AddItemActivity.java
index 55be4a4..466b268 100644
--- a/src/com/android/launcher3/dragndrop/AddItemActivity.java
+++ b/src/com/android/launcher3/dragndrop/AddItemActivity.java
@@ -189,10 +189,18 @@
         if (appWidgetHostView != null) {
             bounds = new Rect();
             appWidgetHostView.getSourceVisualDragBounds(bounds);
-            bounds.offset(appWidgetHostView.getLeft() - (int) mLastTouchPos.x,
-                    appWidgetHostView.getTop() - (int) mLastTouchPos.y);
-            listener = new PinItemDragListener(mRequest, bounds,
-                    appWidgetHostView.getMeasuredWidth(), appWidgetHostView.getMeasuredWidth());
+            float appWidgetHostViewScale = mWidgetCell.getAppWidgetHostViewScale();
+            int xOffset =
+                    appWidgetHostView.getLeft() - (int) (mLastTouchPos.x * appWidgetHostViewScale);
+            int yOffset =
+                    appWidgetHostView.getTop() - (int) (mLastTouchPos.y * appWidgetHostViewScale);
+            bounds.offset(xOffset, yOffset);
+            listener = new PinItemDragListener(
+                    mRequest,
+                    bounds,
+                    appWidgetHostView.getMeasuredWidth(),
+                    appWidgetHostView.getMeasuredWidth(),
+                    appWidgetHostViewScale);
         } else {
             bounds = img.getBitmapBounds();
             bounds.offset(img.getLeft() - (int) mLastTouchPos.x,
@@ -278,9 +286,7 @@
 
             @Override
             protected void onPostExecute(WidgetItem item) {
-                mWidgetCell.setPreviewSize(item);
-                mWidgetCell.applyFromCellItem(item, mApp.getWidgetCache());
-                mWidgetCell.ensurePreview();
+                mWidgetCell.applyFromCellItem(item);
             }
         }.executeOnExecutor(MODEL_EXECUTOR);
         // TODO: Create a worker looper executor and reuse that everywhere.
diff --git a/src/com/android/launcher3/dragndrop/DragController.java b/src/com/android/launcher3/dragndrop/DragController.java
index 5731db4..1e0edac 100644
--- a/src/com/android/launcher3/dragndrop/DragController.java
+++ b/src/com/android/launcher3/dragndrop/DragController.java
@@ -74,7 +74,7 @@
     /** Coordinate for last touch event **/
     protected final Point mLastTouch = new Point();
 
-    private final Point mTmpPoint = new Point();
+    protected final Point mTmpPoint = new Point();
 
     protected DropTarget.DragObject mDragObject;
 
@@ -317,7 +317,7 @@
         mDragObject.dragView.animateTo(mMotionDown.x, mMotionDown.y, onCompleteRunnable, duration);
     }
 
-    private void callOnDragEnd() {
+    protected void callOnDragEnd() {
         if (mIsInPreDrag && mOptions.preDragCondition != null) {
             mOptions.preDragCondition.onPreDragEnd(mDragObject, false /* dragStarted*/);
         }
@@ -343,7 +343,7 @@
     /**
      * Clamps the position to the drag layer bounds.
      */
-    private Point getClampedDragLayerPos(float x, float y) {
+    protected Point getClampedDragLayerPos(float x, float y) {
         mActivity.getDragLayer().getLocalVisibleRect(mRectTemp);
         mTmpPoint.x = (int) Math.max(mRectTemp.left, Math.min(x, mRectTemp.right - 1));
         mTmpPoint.y = (int) Math.max(mRectTemp.top, Math.min(y, mRectTemp.bottom - 1));
@@ -390,7 +390,7 @@
             return false;
         }
 
-        Point dragLayerPos = getClampedDragLayerPos(ev.getX(), ev.getY());
+        Point dragLayerPos = getClampedDragLayerPos(getX(ev), getY(ev));
         mLastTouch.set(dragLayerPos.x,  dragLayerPos.y);
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
             // Remember location of down touch
@@ -403,6 +403,14 @@
         return mDragDriver != null && mDragDriver.onInterceptTouchEvent(ev);
     }
 
+    protected float getX(MotionEvent ev) {
+        return ev.getX();
+    }
+
+    protected float getY(MotionEvent ev) {
+        return ev.getY();
+    }
+
     /**
      * Call this from a drag source view.
      */
diff --git a/src/com/android/launcher3/dragndrop/DragDriver.java b/src/com/android/launcher3/dragndrop/DragDriver.java
index d4ce308..72e47e5 100644
--- a/src/com/android/launcher3/dragndrop/DragDriver.java
+++ b/src/com/android/launcher3/dragndrop/DragDriver.java
@@ -165,8 +165,11 @@
      * Class for driving an internal (i.e. not using framework) drag/drop operation.
      */
     static class InternalDragDriver extends DragDriver {
+        private final DragController mDragController;
+
         InternalDragDriver(DragController dragController, Consumer<MotionEvent> sec) {
             super(dragController, sec);
+            mDragController = dragController;
         }
 
         @Override
@@ -176,11 +179,14 @@
 
             switch (action) {
                 case MotionEvent.ACTION_MOVE:
-                    mEventListener.onDriverDragMove(ev.getX(), ev.getY());
+                    mEventListener.onDriverDragMove(mDragController.getX(ev),
+                            mDragController.getY(ev));
                     break;
                 case MotionEvent.ACTION_UP:
-                    mEventListener.onDriverDragMove(ev.getX(), ev.getY());
-                    mEventListener.onDriverDragEnd(ev.getX(), ev.getY());
+                    mEventListener.onDriverDragMove(mDragController.getX(ev),
+                            mDragController.getY(ev));
+                    mEventListener.onDriverDragEnd(mDragController.getX(ev),
+                            mDragController.getY(ev));
                     break;
                 case MotionEvent.ACTION_CANCEL:
                     mEventListener.onDriverDragCancel();
@@ -197,7 +203,8 @@
 
             switch (action) {
                 case MotionEvent.ACTION_UP:
-                    mEventListener.onDriverDragEnd(ev.getX(), ev.getY());
+                    mEventListener.onDriverDragEnd(mDragController.getX(ev),
+                            mDragController.getY(ev));
                     break;
                 case MotionEvent.ACTION_CANCEL:
                     mEventListener.onDriverDragCancel();
diff --git a/src/com/android/launcher3/dragndrop/DragLayer.java b/src/com/android/launcher3/dragndrop/DragLayer.java
index 011325d..5ee4203 100644
--- a/src/com/android/launcher3/dragndrop/DragLayer.java
+++ b/src/com/android/launcher3/dragndrop/DragLayer.java
@@ -17,14 +17,19 @@
 
 package com.android.launcher3.dragndrop;
 
+import static android.animation.ObjectAnimator.ofFloat;
+
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X;
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_Y;
+import static com.android.launcher3.Utilities.mapRange;
+import static com.android.launcher3.anim.AnimatorListeners.forEndCallback;
 import static com.android.launcher3.anim.Interpolators.DEACCEL_1_5;
 import static com.android.launcher3.compat.AccessibilityManagerCompat.sendCustomAccessibilityEvent;
 
 import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
+import android.animation.ObjectAnimator;
 import android.animation.TimeInterpolator;
-import android.animation.ValueAnimator;
-import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.animation.TypeEvaluator;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Canvas;
@@ -44,10 +49,11 @@
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Workspace;
+import com.android.launcher3.anim.PendingAnimation;
+import com.android.launcher3.anim.SpringProperty;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.graphics.Scrim;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
-import com.android.launcher3.util.Thunk;
 import com.android.launcher3.util.TouchController;
 import com.android.launcher3.views.BaseDragLayer;
 
@@ -69,11 +75,9 @@
     private DragController mDragController;
 
     // Variables relating to animation of views after drop
-    private ValueAnimator mDropAnim = null;
+    private Animator mDropAnim = null;
 
-    @Thunk DragView mDropView = null;
-    @Thunk int mAnchorViewInitialScrollX = 0;
-    @Thunk View mAnchorView = null;
+    private DragView mDropView = null;
 
     private boolean mHoverPointClosesFolder = false;
 
@@ -220,12 +224,7 @@
     public void animateViewIntoPosition(DragView dragView, final int[] pos, float alpha,
             float scaleX, float scaleY, int animationEndStyle, Runnable onFinishRunnable,
             int duration) {
-        Rect r = new Rect();
-        getViewRectRelativeToSelf(dragView, r);
-        final int fromX = r.left;
-        final int fromY = r.top;
-
-        animateViewIntoPosition(dragView, fromX, fromY, pos[0], pos[1], alpha, 1, 1, scaleX, scaleY,
+        animateViewIntoPosition(dragView, pos[0], pos[1], alpha, scaleX, scaleY,
                 onFinishRunnable, animationEndStyle, duration, null);
     }
 
@@ -241,11 +240,6 @@
         parentChildren.measureChild(child);
         parentChildren.layoutChild(child);
 
-        Rect dragViewBounds = new Rect();
-        getViewRectRelativeToSelf(dragView, dragViewBounds);
-        final int fromX = dragViewBounds.left;
-        final int fromY = dragViewBounds.top;
-
         float coord[] = new float[2];
         float childScale = child.getScaleX();
 
@@ -288,51 +282,50 @@
 
         child.setVisibility(INVISIBLE);
         Runnable onCompleteRunnable = () -> child.setVisibility(VISIBLE);
-        animateViewIntoPosition(dragView, fromX, fromY, toX, toY, 1, 1, 1, toScale, toScale,
+        animateViewIntoPosition(dragView, toX, toY, 1, toScale, toScale,
                 onCompleteRunnable, ANIMATION_END_DISAPPEAR, duration, anchorView);
     }
 
-    public void animateViewIntoPosition(final DragView view, final int fromX, final int fromY,
-            final int toX, final int toY, float finalAlpha, float initScaleX, float initScaleY,
-            float finalScaleX, float finalScaleY, Runnable onCompleteRunnable,
-            int animationEndStyle, int duration, View anchorView) {
-        Rect from = new Rect(fromX, fromY, fromX +
-                view.getMeasuredWidth(), fromY + view.getMeasuredHeight());
-        Rect to = new Rect(toX, toY, toX + view.getMeasuredWidth(), toY + view.getMeasuredHeight());
-        animateView(view, from, to, finalAlpha, initScaleX, initScaleY, finalScaleX, finalScaleY, duration,
-                null, null, onCompleteRunnable, animationEndStyle, anchorView);
-    }
-
     /**
      * This method animates a view at the end of a drag and drop animation.
-     *
+     */
+    public void animateViewIntoPosition(final DragView view,
+            final int toX, final int toY, float finalAlpha,
+            float finalScaleX, float finalScaleY, Runnable onCompleteRunnable,
+            int animationEndStyle, int duration, View anchorView) {
+        Rect to = new Rect(toX, toY, toX + view.getMeasuredWidth(), toY + view.getMeasuredHeight());
+        animateView(view, to, finalAlpha, finalScaleX, finalScaleY, duration,
+                null, onCompleteRunnable, animationEndStyle, anchorView);
+    }
+
+    /**
+     * This method animates a view at the end of a drag and drop animation.
      * @param view The view to be animated. This view is drawn directly into DragLayer, and so
      *        doesn't need to be a child of DragLayer.
-     * @param from The initial location of the view. Only the left and top parameters are used.
      * @param to The final location of the view. Only the left and top parameters are used. This
-     *        location doesn't account for scaling, and so should be centered about the desired
-     *        final location (including scaling).
+*        location doesn't account for scaling, and so should be centered about the desired
+*        final location (including scaling).
      * @param finalAlpha The final alpha of the view, in case we want it to fade as it animates.
      * @param finalScaleX The final scale of the view. The view is scaled about its center.
      * @param finalScaleY The final scale of the view. The view is scaled about its center.
      * @param duration The duration of the animation.
      * @param motionInterpolator The interpolator to use for the location of the view.
-     * @param alphaInterpolator The interpolator to use for the alpha of the view.
      * @param onCompleteRunnable Optional runnable to run on animation completion.
      * @param animationEndStyle Whether or not to fade out the view once the animation completes.
-     *        {@link #ANIMATION_END_DISAPPEAR} or {@link #ANIMATION_END_REMAIN_VISIBLE}.
+*        {@link #ANIMATION_END_DISAPPEAR} or {@link #ANIMATION_END_REMAIN_VISIBLE}.
      * @param anchorView If not null, this represents the view which the animated view stays
-     *        anchored to in case scrolling is currently taking place. Note: currently this is
-     *        only used for the X dimension for the case of the workspace.
      */
-    public void animateView(final DragView view, final Rect from, final Rect to,
-            final float finalAlpha, final float initScaleX, final float initScaleY,
-            final float finalScaleX, final float finalScaleY, int duration,
-            final Interpolator motionInterpolator, final Interpolator alphaInterpolator,
-            final Runnable onCompleteRunnable, final int animationEndStyle, View anchorView) {
+    public void animateView(final DragView view, final Rect to,
+            final float finalAlpha, final float finalScaleX, final float finalScaleY, int duration,
+            final Interpolator motionInterpolator, final Runnable onCompleteRunnable,
+            final int animationEndStyle, View anchorView) {
+        view.cancelAnimation();
+        view.requestLayout();
+
+        final int[] from = getViewLocationRelativeToSelf(view);
 
         // Calculate the duration of the animation based on the object's distance
-        final float dist = (float) Math.hypot(to.left - from.left, to.top - from.top);
+        final float dist = (float) Math.hypot(to.left - from[0], to.top - from[1]);
         final Resources res = getResources();
         final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist);
 
@@ -346,93 +339,45 @@
         }
 
         // Fall back to cubic ease out interpolator for the animation if none is specified
-        TimeInterpolator interpolator = null;
-        if (alphaInterpolator == null || motionInterpolator == null) {
-            interpolator = DEACCEL_1_5;
-        }
+        TimeInterpolator interpolator =
+                motionInterpolator == null ? DEACCEL_1_5 : motionInterpolator;
 
         // Animate the view
-        final float initAlpha = view.getAlpha();
-        final float dropViewScale = view.getScaleX();
-        AnimatorUpdateListener updateCb = new AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                final float percent = (Float) animation.getAnimatedValue();
-                final int width = view.getMeasuredWidth();
-                final int height = view.getMeasuredHeight();
+        PendingAnimation anim = new PendingAnimation(duration);
+        anim.add(ofFloat(view, View.SCALE_X, finalScaleX), interpolator, SpringProperty.DEFAULT);
+        anim.add(ofFloat(view, View.SCALE_Y, finalScaleY), interpolator, SpringProperty.DEFAULT);
+        anim.setViewAlpha(view, finalAlpha, interpolator);
+        anim.setFloat(view, VIEW_TRANSLATE_Y, to.top, interpolator);
 
-                float alphaPercent = alphaInterpolator == null ? percent :
-                        alphaInterpolator.getInterpolation(percent);
-                float motionPercent = motionInterpolator == null ? percent :
-                        motionInterpolator.getInterpolation(percent);
-
-                float initialScaleX = initScaleX * dropViewScale;
-                float initialScaleY = initScaleY * dropViewScale;
-                float scaleX = finalScaleX * percent + initialScaleX * (1 - percent);
-                float scaleY = finalScaleY * percent + initialScaleY * (1 - percent);
-                float alpha = finalAlpha * alphaPercent + initAlpha * (1 - alphaPercent);
-
-                float fromLeft = from.left + (initialScaleX - 1f) * width / 2;
-                float fromTop = from.top + (initialScaleY - 1f) * height / 2;
-
-                int x = (int) (fromLeft + Math.round(((to.left - fromLeft) * motionPercent)));
-                int y = (int) (fromTop + Math.round(((to.top - fromTop) * motionPercent)));
-
-                int anchorAdjust = mAnchorView == null ? 0 : (int) (mAnchorView.getScaleX() *
-                    (mAnchorViewInitialScrollX - mAnchorView.getScrollX()));
-
-                int xPos = x - mDropView.getScrollX() + anchorAdjust;
-                int yPos = y - mDropView.getScrollY();
-
-                mDropView.setTranslationX(xPos);
-                mDropView.setTranslationY(yPos);
-                mDropView.setScaleX(scaleX);
-                mDropView.setScaleY(scaleY);
-                mDropView.setAlpha(alpha);
-            }
-        };
-        animateView(view, updateCb, duration, interpolator, onCompleteRunnable, animationEndStyle,
-                anchorView);
+        ObjectAnimator xMotion = ofFloat(view, VIEW_TRANSLATE_X, to.left);
+        if (anchorView != null) {
+            final int startScroll = anchorView.getScrollX();
+            TypeEvaluator<Float> evaluator = (f, s, e) -> mapRange(f, s, e)
+                    + (anchorView.getScaleX() * (startScroll - anchorView.getScrollX()));
+            xMotion.setEvaluator(evaluator);
+        }
+        anim.add(xMotion, interpolator, SpringProperty.DEFAULT);
+        if (onCompleteRunnable != null) {
+            anim.addListener(forEndCallback(onCompleteRunnable));
+        }
+        playDropAnimation(view, anim.buildAnim(), animationEndStyle);
     }
 
-    public void animateView(final DragView view, AnimatorUpdateListener updateCb, int duration,
-            TimeInterpolator interpolator, final Runnable onCompleteRunnable,
-            final int animationEndStyle, View anchorView) {
+    /**
+     * Runs a previously constructed drop animation
+     */
+    public void playDropAnimation(final DragView view, Animator animator, int animationEndStyle) {
         // Clean up the previous animations
         if (mDropAnim != null) mDropAnim.cancel();
 
         // Show the drop view if it was previously hidden
         mDropView = view;
-        mDropView.cancelAnimation();
-        mDropView.requestLayout();
-
-        // Set the anchor view if the page is scrolling
-        if (anchorView != null) {
-            mAnchorViewInitialScrollX = anchorView.getScrollX();
-        }
-        mAnchorView = anchorView;
-
         // Create and start the animation
-        mDropAnim = new ValueAnimator();
-        mDropAnim.setInterpolator(interpolator);
-        mDropAnim.setDuration(duration);
-        mDropAnim.setFloatValues(0f, 1f);
-        mDropAnim.addUpdateListener(updateCb);
-        mDropAnim.addListener(new AnimatorListenerAdapter() {
-            public void onAnimationEnd(Animator animation) {
-                if (onCompleteRunnable != null) {
-                    onCompleteRunnable.run();
-                }
-                switch (animationEndStyle) {
-                case ANIMATION_END_DISAPPEAR:
-                    clearAnimatedView();
-                    break;
-                case ANIMATION_END_REMAIN_VISIBLE:
-                    break;
-                }
-                mDropAnim = null;
-            }
-        });
+        mDropAnim = animator;
+        mDropAnim.addListener(forEndCallback(() -> mDropAnim = null));
+        if (animationEndStyle == ANIMATION_END_DISAPPEAR) {
+            mDropAnim.addListener(forEndCallback(this::clearAnimatedView));
+        }
         mDropAnim.start();
     }
 
diff --git a/src/com/android/launcher3/dragndrop/DragView.java b/src/com/android/launcher3/dragndrop/DragView.java
index 3fdb256..57d6cc3 100644
--- a/src/com/android/launcher3/dragndrop/DragView.java
+++ b/src/com/android/launcher3/dragndrop/DragView.java
@@ -23,6 +23,8 @@
 import static com.android.launcher3.Utilities.getBadge;
 import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
 import android.animation.ValueAnimator;
@@ -53,23 +55,19 @@
 import androidx.dynamicanimation.animation.SpringAnimation;
 import androidx.dynamicanimation.animation.SpringForce;
 
-import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherSettings;
-import com.android.launcher3.LauncherState;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.model.data.ItemInfo;
-import com.android.launcher3.statemanager.StateManager.StateListener;
 import com.android.launcher3.util.RunnableList;
-import com.android.launcher3.util.Thunk;
+import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
-import com.android.launcher3.widget.LauncherAppWidgetHostView;
 
 /** A custom view for rendering an icon, folder, shortcut or widget during drag-n-drop. */
-public class DragView extends FrameLayout implements StateListener<LauncherState> {
+public abstract class DragView<T extends Context & ActivityContext> extends FrameLayout {
 
     public static final int VIEW_ZOOM_DURATION = 150;
 
@@ -82,22 +80,23 @@
     private final int mHeight;
 
     private final int mBlurSizeOutline;
-    private final int mRegistrationX;
-    private final int mRegistrationY;
+    protected final int mRegistrationX;
+    protected final int mRegistrationY;
     private final float mInitialScale;
-    private final float mScaleOnDrop;
-    private final int[] mTempLoc = new int[2];
+    protected final float mScaleOnDrop;
+    protected final int[] mTempLoc = new int[2];
 
     private final RunnableList mOnDragStartCallback = new RunnableList();
 
     private Point mDragVisualizeOffset = null;
     private Rect mDragRegion = null;
-    private final Launcher mLauncher;
-    private final DragLayer mDragLayer;
-    @Thunk final DragController mDragController;
+    protected final T mActivity;
+    private final BaseDragLayer<T> mDragLayer;
     private boolean mHasDrawn = false;
 
     final ValueAnimator mAnim;
+    // Whether mAnim has started. Unlike mAnim.isStarted(), this is true even after mAnim ends.
+    private boolean mAnimStarted;
 
     private int mLastTouchX;
     private int mLastTouchY;
@@ -110,7 +109,7 @@
     private Path mScaledMaskPath;
     private Drawable mBadge;
 
-    public DragView(Launcher launcher, Drawable drawable, int registrationX,
+    public DragView(T launcher, Drawable drawable, int registrationX,
             int registrationY, final float initialScale, final float scaleOnDrop,
             final float finalScaleDps) {
         this(launcher, getViewFromDrawable(launcher, drawable),
@@ -123,7 +122,7 @@
      * <p>
      * The registration point is the point inside our view that the touch events should
      * be centered upon.
-     * @param launcher The Launcher instance
+     * @param activity The Launcher instance/ActivityContext this DragView is in.
      * @param content the view content that is attached to the drag view.
      * @param width the width of the dragView
      * @param height the height of the dragView
@@ -133,13 +132,12 @@
      * @param scaleOnDrop the scale used in the drop animation.
      * @param finalScaleDps the scale used in the zoom out animation when the drag view is shown.
      */
-    public DragView(Launcher launcher, View content, int width, int height, int registrationX,
+    public DragView(T activity, View content, int width, int height, int registrationX,
             int registrationY, final float initialScale, final float scaleOnDrop,
             final float finalScaleDps) {
-        super(launcher);
-        mLauncher = launcher;
-        mDragLayer = launcher.getDragLayer();
-        mDragController = launcher.getDragController();
+        super(activity);
+        mActivity = activity;
+        mDragLayer = activity.getDragLayer();
 
         mContent = content;
         mWidth = width;
@@ -153,6 +151,12 @@
 
         addView(content, new LayoutParams(width, height));
 
+        // If there is already a scale set on the content, we don't want to clip the children.
+        if (content.getScaleX() != 1 || content.getScaleY() != 1) {
+            setClipChildren(false);
+            setClipToPadding(false);
+        }
+
         final float scale = (width + finalScaleDps) / width;
 
         // Set the initial scale to avoid any jumps
@@ -170,6 +174,12 @@
                 animation.cancel();
             }
         });
+        mAnim.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationStart(Animator animation) {
+                mAnimStarted = true;
+            }
+        });
 
         setDragRegion(new Rect(0, 0, width, height));
 
@@ -188,24 +198,6 @@
         setWillNotDraw(false);
     }
 
-    @Override
-    protected void onAttachedToWindow() {
-        super.onAttachedToWindow();
-        mLauncher.getStateManager().addStateListener(this);
-    }
-
-    @Override
-    protected void onDetachedFromWindow() {
-        super.onDetachedFromWindow();
-        mLauncher.getStateManager().removeStateListener(this);
-    }
-
-    @Override
-    public void onStateTransitionComplete(LauncherState finalState) {
-        setVisibility((finalState == LauncherState.NORMAL
-                || finalState == LauncherState.SPRING_LOADED) ? VISIBLE : INVISIBLE);
-    }
-
     /**
      * Initialize {@code #mIconDrawable} if the item can be represented using
      * an {@link AdaptiveIconDrawable} or {@link FolderAdaptiveIcon}.
@@ -222,10 +214,10 @@
             Object[] outObj = new Object[1];
             int w = mWidth;
             int h = mHeight;
-            Drawable dr = Utilities.getFullDrawable(mLauncher, info, w, h, outObj);
+            Drawable dr = Utilities.getFullDrawable(mActivity, info, w, h, outObj);
 
             if (dr instanceof AdaptiveIconDrawable) {
-                int blurMargin = (int) mLauncher.getResources()
+                int blurMargin = (int) mActivity.getResources()
                         .getDimension(R.dimen.blur_size_medium_outline) / 2;
 
                 Rect bounds = new Rect(0, 0, w, h);
@@ -233,13 +225,13 @@
                 // Badge is applied after icon normalization so the bounds for badge should not
                 // be scaled down due to icon normalization.
                 Rect badgeBounds = new Rect(bounds);
-                mBadge = getBadge(mLauncher, info, outObj[0]);
+                mBadge = getBadge(mActivity, info, outObj[0]);
                 mBadge.setBounds(badgeBounds);
 
                 // Do not draw the background in case of folder as its translucent
                 final boolean shouldDrawBackground = !(dr instanceof FolderAdaptiveIcon);
 
-                try (LauncherIcons li = LauncherIcons.obtain(mLauncher)) {
+                try (LauncherIcons li = LauncherIcons.obtain(mActivity)) {
                     Drawable nDr; // drawable to be normalized
                     if (shouldDrawBackground) {
                         nDr = dr;
@@ -306,16 +298,6 @@
         mOnDragStartCallback.executeAllAndDestroy();
     }
 
-    // TODO(b/183609936): This is only for LauncherAppWidgetHostView that is rendered in a drawable.
-    // Once LauncherAppWidgetHostView is directly rendered in this view, removes this method.
-    @Override
-    public void invalidate() {
-        super.invalidate();
-        if (mContent instanceof ImageView) {
-            mContent.invalidate();
-        }
-    }
-
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         super.onMeasure(makeMeasureSpec(mWidth, EXACTLY), makeMeasureSpec(mHeight, EXACTLY));
@@ -413,6 +395,10 @@
         }
     }
 
+    public boolean isAnimationFinished() {
+        return mAnimStarted && !mAnim.isRunning();
+    }
+
     /**
      * Move the window containing this view.
      *
@@ -430,12 +416,11 @@
         applyTranslation();
     }
 
-    public void animateTo(int toTouchX, int toTouchY, Runnable onCompleteRunnable, int duration) {
-        mTempLoc[0] = toTouchX - mRegistrationX;
-        mTempLoc[1] = toTouchY - mRegistrationY;
-        mDragLayer.animateViewIntoPosition(this, mTempLoc, 1f, mScaleOnDrop, mScaleOnDrop,
-                DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration);
-    }
+    /**
+     * Animate this DragView to the given DragLayer coordinates and then remove it.
+     */
+    public abstract void animateTo(int toTouchX, int toTouchY, Runnable onCompleteRunnable,
+            int duration);
 
     public void animateShift(final int shiftX, final int shiftY) {
         if (mAnim.isStarted()) {
@@ -471,7 +456,7 @@
             Picture picture = new Picture();
             mContent.draw(picture.beginRecording(mWidth, mHeight));
             picture.endRecording();
-            View view = new View(mLauncher);
+            View view = new View(mActivity);
             view.setBackground(new PictureDrawable(picture));
             view.measure(makeMeasureSpec(mWidth, EXACTLY), makeMeasureSpec(mHeight, EXACTLY));
             view.layout(mContent.getLeft(), mContent.getTop(),
@@ -492,24 +477,6 @@
     }
 
     /**
-     * If the drag view uses color extraction, block it.
-     */
-    public void disableColorExtraction() {
-        if (mContent instanceof LauncherAppWidgetHostView) {
-            ((LauncherAppWidgetHostView) mContent).disableColorExtraction();
-        }
-    }
-
-    /**
-     * If the drag view uses color extraction, restores it.
-     */
-    public void resumeColorExtraction() {
-        if (mContent instanceof LauncherAppWidgetHostView) {
-            ((LauncherAppWidgetHostView) mContent).enableColorExtraction(/* updateColors= */ false);
-        }
-    }
-
-    /**
      * Removes this view from the {@link DragLayer}.
      *
      * <p>If the drag content is a {@link #mContent}, this call doesn't reattach the
diff --git a/src/com/android/launcher3/dragndrop/FolderAdaptiveIcon.java b/src/com/android/launcher3/dragndrop/FolderAdaptiveIcon.java
index 98c0cfc..74d9a22 100644
--- a/src/com/android/launcher3/dragndrop/FolderAdaptiveIcon.java
+++ b/src/com/android/launcher3/dragndrop/FolderAdaptiveIcon.java
@@ -32,12 +32,12 @@
 
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.Launcher;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.folder.PreviewBackground;
 import com.android.launcher3.graphics.ShiftedBitmapDrawable;
 import com.android.launcher3.icons.BitmapRenderer;
 import com.android.launcher3.util.Preconditions;
+import com.android.launcher3.views.ActivityContext;
 
 /**
  * {@link AdaptiveIconDrawable} representation of a {@link FolderIcon}
@@ -70,14 +70,14 @@
     }
 
     public static @Nullable FolderAdaptiveIcon createFolderAdaptiveIcon(
-            Launcher launcher, int folderId, Point dragViewSize) {
+            ActivityContext activity, int folderId, Point dragViewSize) {
         Preconditions.assertNonUiThread();
 
         // Create the actual drawable on the UI thread to avoid race conditions with
         // FolderIcon draw pass
         try {
             return MAIN_EXECUTOR.submit(() -> {
-                FolderIcon icon = launcher.findFolderIcon(folderId);
+                FolderIcon icon = activity.findFolderIcon(folderId);
                 return icon == null ? null : createDrawableOnUiThread(icon, dragViewSize);
 
             }).get();
diff --git a/src/com/android/launcher3/dragndrop/LauncherDragController.java b/src/com/android/launcher3/dragndrop/LauncherDragController.java
index a98d70c..0e8b0a5 100644
--- a/src/com/android/launcher3/dragndrop/LauncherDragController.java
+++ b/src/com/android/launcher3/dragndrop/LauncherDragController.java
@@ -96,7 +96,7 @@
         final float scaleDps = mIsInPreDrag
                 ? res.getDimensionPixelSize(R.dimen.pre_drag_view_scale) : 0f;
         final DragView dragView = mDragObject.dragView = drawable != null
-                ? new DragView(
+                ? new LauncherDragView(
                 mActivity,
                 drawable,
                 registrationX,
@@ -104,7 +104,7 @@
                 initialDragViewScale,
                 dragViewScaleOnDrop,
                 scaleDps)
-                : new DragView(
+                : new LauncherDragView(
                         mActivity,
                         view,
                         view.getMeasuredWidth(),
diff --git a/src/com/android/launcher3/dragndrop/LauncherDragView.java b/src/com/android/launcher3/dragndrop/LauncherDragView.java
new file mode 100644
index 0000000..cc68e2e
--- /dev/null
+++ b/src/com/android/launcher3/dragndrop/LauncherDragView.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.dragndrop;
+
+import android.graphics.drawable.Drawable;
+import android.view.View;
+
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.statemanager.StateManager;
+
+/**
+ * A DragView drawn/used by the Launcher activity.
+ */
+public class LauncherDragView extends DragView<Launcher>
+        implements StateManager.StateListener<LauncherState> {
+
+
+    public LauncherDragView(Launcher launcher, Drawable drawable, int registrationX,
+            int registrationY, float initialScale, float scaleOnDrop, float finalScaleDps) {
+        super(launcher, drawable, registrationX, registrationY, initialScale, scaleOnDrop,
+                finalScaleDps);
+    }
+
+    public LauncherDragView(Launcher launcher, View content, int width, int height,
+            int registrationX, int registrationY, float initialScale, float scaleOnDrop,
+            float finalScaleDps) {
+        super(launcher, content, width, height, registrationX, registrationY, initialScale,
+                scaleOnDrop, finalScaleDps);
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        mActivity.getStateManager().addStateListener(this);
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        mActivity.getStateManager().removeStateListener(this);
+    }
+
+    @Override
+    public void onStateTransitionComplete(LauncherState finalState) {
+        setVisibility((finalState == LauncherState.NORMAL
+                || finalState == LauncherState.SPRING_LOADED) ? VISIBLE : INVISIBLE);
+    }
+
+    @Override
+    public void animateTo(int toTouchX, int toTouchY, Runnable onCompleteRunnable, int duration) {
+        mTempLoc[0] = toTouchX - mRegistrationX;
+        mTempLoc[1] = toTouchY - mRegistrationY;
+        mActivity.getDragLayer().animateViewIntoPosition(this, mTempLoc, 1f, mScaleOnDrop,
+                mScaleOnDrop, DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration);
+    }
+}
diff --git a/src/com/android/launcher3/dragndrop/PinItemDragListener.java b/src/com/android/launcher3/dragndrop/PinItemDragListener.java
index 2bdf8a0..af43ae8 100644
--- a/src/com/android/launcher3/dragndrop/PinItemDragListener.java
+++ b/src/com/android/launcher3/dragndrop/PinItemDragListener.java
@@ -48,12 +48,19 @@
 
     private final PinItemRequest mRequest;
     private final CancellationSignal mCancelSignal;
+    private final float mPreviewScale;
 
     public PinItemDragListener(PinItemRequest request, Rect previewRect,
             int previewBitmapWidth, int previewViewWidth) {
+        this(request, previewRect, previewBitmapWidth, previewViewWidth, /* previewScale= */ 1f);
+    }
+
+    public PinItemDragListener(PinItemRequest request, Rect previewRect,
+            int previewBitmapWidth, int previewViewWidth, float previewScale) {
         super(previewRect, previewBitmapWidth, previewViewWidth);
         mRequest = request;
         mCancelSignal = new CancellationSignal();
+        mPreviewScale = previewScale;
     }
 
     @Override
@@ -98,7 +105,7 @@
 
         PendingItemDragHelper dragHelper = new PendingItemDragHelper(view);
         if (mRequest.getRequestType() == PinItemRequest.REQUEST_TYPE_APPWIDGET) {
-            dragHelper.setRemoteViewsPreview(getPreview(mRequest));
+            dragHelper.setRemoteViewsPreview(getPreview(mRequest), mPreviewScale);
         }
         return dragHelper;
     }
diff --git a/src/com/android/launcher3/folder/Folder.java b/src/com/android/launcher3/folder/Folder.java
index 22bb56c..7187188 100644
--- a/src/com/android/launcher3/folder/Folder.java
+++ b/src/com/android/launcher3/folder/Folder.java
@@ -75,7 +75,6 @@
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace.ItemOperator;
 import com.android.launcher3.accessibility.AccessibleDragListenerAdapter;
 import com.android.launcher3.accessibility.FolderAccessibilityHelper;
 import com.android.launcher3.anim.KeyboardInsetAnimationCallback;
@@ -94,6 +93,7 @@
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.pageindicators.PageIndicatorDots;
 import com.android.launcher3.util.Executors;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
@@ -1196,8 +1196,7 @@
     }
 
     void replaceFolderWithFinalItem() {
-        mLauncherDelegate.replaceFolderWithFinalItem(this);
-        mDestroyed = true;
+        mDestroyed = mLauncherDelegate.replaceFolderWithFinalItem(this);
     }
 
     public boolean isDestroyed() {
diff --git a/src/com/android/launcher3/folder/FolderIcon.java b/src/com/android/launcher3/folder/FolderIcon.java
index 96030f9..60d8cdb 100644
--- a/src/com/android/launcher3/folder/FolderIcon.java
+++ b/src/com/android/launcher3/folder/FolderIcon.java
@@ -336,8 +336,6 @@
         if (animateView != null && mActivity instanceof Launcher) {
             final Launcher launcher = (Launcher) mActivity;
             DragLayer dragLayer = launcher.getDragLayer();
-            Rect from = new Rect();
-            dragLayer.getViewRectRelativeToSelf(animateView, from);
             Rect to = finalRect;
             if (to == null) {
                 to = new Rect();
@@ -403,13 +401,14 @@
             }
 
             final int finalIndex = index;
-            dragLayer.animateView(animateView, from, to, finalAlpha,
-                    1, 1, finalScale, finalScale, DROP_IN_ANIMATION_DURATION,
-                    Interpolators.DEACCEL_2, Interpolators.ACCEL_2,
+            dragLayer.animateView(animateView, to, finalAlpha,
+                    finalScale, finalScale, DROP_IN_ANIMATION_DURATION,
+                    Interpolators.DEACCEL_2,
                     () -> {
                         mPreviewItemManager.hidePreviewItem(finalIndex, false);
                         mFolder.showItem(item);
-                    }, DragLayer.ANIMATION_END_DISAPPEAR, null);
+                    }, 
+                    DragLayer.ANIMATION_END_DISAPPEAR, null);
 
             mFolder.hideItem(item);
 
@@ -683,6 +682,7 @@
 
     @Override
     public void onAdd(WorkspaceItemInfo item, int rank) {
+        updatePreviewItems(false);
         boolean wasDotted = mDotInfo.hasDot();
         mDotInfo.addDotInfo(mActivity.getDotInfoForItem(item));
         boolean isDotted = mDotInfo.hasDot();
@@ -694,6 +694,7 @@
 
     @Override
     public void onRemove(List<WorkspaceItemInfo> items) {
+        updatePreviewItems(false);
         boolean wasDotted = mDotInfo.hasDot();
         items.stream().map(mActivity::getDotInfoForItem).forEach(mDotInfo::subtractDotInfo);
         boolean isDotted = mDotInfo.hasDot();
diff --git a/src/com/android/launcher3/folder/FolderPagedView.java b/src/com/android/launcher3/folder/FolderPagedView.java
index 3d2884a..65991e4 100644
--- a/src/com/android/launcher3/folder/FolderPagedView.java
+++ b/src/com/android/launcher3/folder/FolderPagedView.java
@@ -41,12 +41,12 @@
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace.ItemOperator;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.pageindicators.PageIndicatorDots;
 import com.android.launcher3.touch.ItemClickHandler;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.util.ViewCache;
 import com.android.launcher3.views.ActivityContext;
diff --git a/src/com/android/launcher3/folder/LauncherDelegate.java b/src/com/android/launcher3/folder/LauncherDelegate.java
index f7d8e8c..c5b3913 100644
--- a/src/com/android/launcher3/folder/LauncherDelegate.java
+++ b/src/com/android/launcher3/folder/LauncherDelegate.java
@@ -18,8 +18,6 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_FOLDER_CONVERTED_TO_ICON;
 
 import android.content.Context;
-import android.graphics.Rect;
-import android.graphics.RectF;
 import android.view.MotionEvent;
 import android.view.View;
 
@@ -38,10 +36,7 @@
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
-import com.android.launcher3.views.BaseDragLayer.LayoutParams;
-import com.android.launcher3.widget.LocalColorExtractor;
 
-import java.util.Arrays;
 import java.util.Optional;
 import java.util.function.Consumer;
 
@@ -51,8 +46,6 @@
 public class LauncherDelegate {
 
     private final Launcher mLauncher;
-    private final Rect mTempRect = new Rect();
-    private final RectF mTempRectF = new RectF();
 
     private LauncherDelegate(Launcher launcher) {
         mLauncher = launcher;
@@ -84,16 +77,7 @@
         return mLauncher;
     }
 
-    void addRectForColorExtraction(BaseDragLayer.LayoutParams lp, LocalColorExtractor target) {
-        mTempRect.set(lp.x, lp.y, lp.x + lp.width, lp.y + lp.height);
-        target.getExtractedRectForViewRect(mLauncher,
-                mLauncher.getWorkspace().getCurrentPage(), mTempRect, mTempRectF);
-        if (!mTempRectF.isEmpty()) {
-            target.addLocation(Arrays.asList(mTempRectF));
-        }
-    }
-
-    void replaceFolderWithFinalItem(Folder folder) {
+    boolean replaceFolderWithFinalItem(Folder folder) {
         // Add the last remaining child to the workspace in place of the folder
         Runnable onCompleteRunnable = new Runnable() {
             @Override
@@ -147,6 +131,7 @@
         } else {
             onCompleteRunnable.run();
         }
+        return true;
     }
 
 
@@ -191,7 +176,7 @@
         ModelWriter getModelWriter() {
             if (mWriter == null) {
                 mWriter = LauncherAppState.getInstance((Context) mContext).getModel()
-                        .getWriter(false, false);
+                        .getWriter(false, false, null);
             }
             return mWriter;
         }
@@ -205,16 +190,15 @@
         }
 
         @Override
-        void replaceFolderWithFinalItem(Folder folder) { }
+        boolean replaceFolderWithFinalItem(Folder folder) {
+            return false;
+        }
 
         @Override
         boolean interceptOutsideTouch(MotionEvent ev, BaseDragLayer dl, Folder folder) {
             folder.close(true);
             return true;
         }
-
-        @Override
-        void addRectForColorExtraction(LayoutParams lp, LocalColorExtractor target) { }
     }
 
     static LauncherDelegate from(ActivityContext context) {
diff --git a/src/com/android/launcher3/graphics/DragPreviewProvider.java b/src/com/android/launcher3/graphics/DragPreviewProvider.java
index a549750..f027b33 100644
--- a/src/com/android/launcher3/graphics/DragPreviewProvider.java
+++ b/src/com/android/launcher3/graphics/DragPreviewProvider.java
@@ -32,13 +32,13 @@
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.BubbleTextView;
-import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.dragndrop.DraggableView;
 import com.android.launcher3.icons.BitmapRenderer;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.util.SafeCloseable;
+import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 
 import java.nio.ByteBuffer;
@@ -150,7 +150,7 @@
     }
 
     public float getScaleAndPosition(Drawable preview, int[] outPos) {
-        float scale = Launcher.getLauncher(mView.getContext())
+        float scale = ActivityContext.lookupContext(mView.getContext())
                 .getDragLayer().getLocationInDragLayer(mView, outPos);
         if (mView instanceof LauncherAppWidgetHostView) {
             // App widgets are technically scaled, but are drawn at their expected size -- so the
@@ -167,7 +167,7 @@
 
     /** Returns the scale and position of a given view for drag-n-drop. */
     public float getScaleAndPosition(View view, int[] outPos) {
-        float scale = Launcher.getLauncher(mView.getContext())
+        float scale = ActivityContext.lookupContext(mView.getContext())
                 .getDragLayer().getLocationInDragLayer(mView, outPos);
         if (mView instanceof LauncherAppWidgetHostView) {
             // App widgets are technically scaled, but are drawn at their expected size -- so the
@@ -201,7 +201,7 @@
         public void run() {
             Bitmap preview = convertPreviewToAlphaBitmap(mPreviewSnapshot);
             if (mIsIcon) {
-                int size = Launcher.getLauncher(mContext).getDeviceProfile().iconSizePx;
+                int size = ActivityContext.lookupContext(mContext).getDeviceProfile().iconSizePx;
                 preview = Bitmap.createScaledBitmap(preview, size, size, false);
             }
             //else case covers AppWidgetHost (doesn't drag/drop across different device profiles)
diff --git a/src/com/android/launcher3/graphics/GridCustomizationsProvider.java b/src/com/android/launcher3/graphics/GridCustomizationsProvider.java
index e4f5539..fc8d855 100644
--- a/src/com/android/launcher3/graphics/GridCustomizationsProvider.java
+++ b/src/com/android/launcher3/graphics/GridCustomizationsProvider.java
@@ -9,7 +9,6 @@
 import android.content.ContentProvider;
 import android.content.ContentValues;
 import android.content.pm.PackageManager;
-import android.content.res.XmlResourceParser;
 import android.database.Cursor;
 import android.database.MatrixCursor;
 import android.net.Uri;
@@ -23,23 +22,13 @@
 import android.os.Messenger;
 import android.util.ArrayMap;
 import android.util.Log;
-import android.util.Xml;
 
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.InvariantDeviceProfile.GridOption;
-import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.util.Executors;
 
-import org.xmlpull.v1.XmlPullParser;
-import org.xmlpull.v1.XmlPullParserException;
-
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
 /**
  * Exposes various launcher grid options and allows the caller to change them.
  * APIs:
@@ -94,7 +83,7 @@
                 MatrixCursor cursor = new MatrixCursor(new String[] {
                         KEY_NAME, KEY_ROWS, KEY_COLS, KEY_PREVIEW_COUNT, KEY_IS_DEFAULT});
                 InvariantDeviceProfile idp = InvariantDeviceProfile.INSTANCE.get(getContext());
-                for (GridOption gridOption : parseAllGridOptions()) {
+                for (GridOption gridOption : idp.parseAllGridOptions(getContext())) {
                     cursor.newRow()
                             .add(KEY_NAME, gridOption.name)
                             .add(KEY_ROWS, gridOption.numRows)
@@ -116,25 +105,6 @@
         }
     }
 
-    private List<GridOption> parseAllGridOptions() {
-        List<GridOption> result = new ArrayList<>();
-        try (XmlResourceParser parser = getContext().getResources().getXml(R.xml.device_profiles)) {
-            final int depth = parser.getDepth();
-            int type;
-            while (((type = parser.next()) != XmlPullParser.END_TAG ||
-                    parser.getDepth() > depth) && type != XmlPullParser.END_DOCUMENT) {
-                if ((type == XmlPullParser.START_TAG)
-                        && GridOption.TAG_NAME.equals(parser.getName())) {
-                    result.add(new GridOption(getContext(), Xml.asAttributeSet(parser)));
-                }
-            }
-        } catch (IOException | XmlPullParserException e) {
-            Log.e(TAG, "Error parsing device profile", e);
-            return Collections.emptyList();
-        }
-        return result;
-    }
-
     @Override
     public String getType(Uri uri) {
         return "vnd.android.cursor.dir/launcher_grid";
@@ -155,9 +125,10 @@
         switch (uri.getPath()) {
             case KEY_DEFAULT_GRID: {
                 String gridName = values.getAsString(KEY_NAME);
+                InvariantDeviceProfile idp = InvariantDeviceProfile.INSTANCE.get(getContext());
                 // Verify that this is a valid grid option
                 GridOption match = null;
-                for (GridOption option : parseAllGridOptions()) {
+                for (GridOption option : idp.parseAllGridOptions(getContext())) {
                     if (option.name.equals(gridName)) {
                         match = option;
                         break;
@@ -167,8 +138,7 @@
                     return 0;
                 }
 
-                InvariantDeviceProfile.INSTANCE.get(getContext())
-                        .setCurrentGrid(getContext(), gridName);
+                idp.setCurrentGrid(getContext(), gridName);
                 return 1;
             }
             case ICON_THEMED:
diff --git a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
index 7a31ea0..a96de31 100644
--- a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
+++ b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
@@ -29,6 +29,7 @@
 import android.app.Fragment;
 import android.app.WallpaperColors;
 import android.app.WallpaperManager;
+import android.appwidget.AppWidgetHost;
 import android.appwidget.AppWidgetHostView;
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.Context;
@@ -84,11 +85,15 @@
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
+import com.android.launcher3.widget.BaseLauncherAppWidgetHostView;
+import com.android.launcher3.widget.LauncherAppWidgetHost;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.LocalColorExtractor;
+import com.android.launcher3.widget.NavigableAppWidgetHostView;
 import com.android.launcher3.widget.custom.CustomWidgetManager;
 
 import java.util.ArrayList;
@@ -205,7 +210,8 @@
     private final LayoutInflater mHomeElementInflater;
     private final InsettableFrameLayout mRootView;
     private final Hotseat mHotseat;
-    private final CellLayout mWorkspace;
+    private final Map<Integer, CellLayout> mWorkspaceScreens = new HashMap<>();
+    private final AppWidgetHost mAppWidgetHost;
     private final SparseIntArray mWallpaperColorResources;
 
     public LauncherPreviewRenderer(Context context,
@@ -250,19 +256,31 @@
                 new ContextThemeWrapper(this, R.style.HomeScreenElementTheme));
         mHomeElementInflater.setFactory2(this);
 
+        int layoutRes = mDp.isTwoPanels ? R.layout.launcher_preview_two_panel_layout
+                : R.layout.launcher_preview_layout;
         mRootView = (InsettableFrameLayout) mHomeElementInflater.inflate(
-                R.layout.launcher_preview_layout, null, false);
+                layoutRes, null, false);
         mRootView.setInsets(mInsets);
         measureView(mRootView, mDp.widthPx, mDp.heightPx);
 
         mHotseat = mRootView.findViewById(R.id.hotseat);
         mHotseat.resetLayout(false);
 
-        mWorkspace = mRootView.findViewById(R.id.workspace);
-        mWorkspace.setPadding(mDp.workspacePadding.left + mDp.cellLayoutPaddingLeftRightPx,
+        CellLayout firstScreen = mRootView.findViewById(R.id.workspace);
+        firstScreen.setPadding(mDp.workspacePadding.left + mDp.cellLayoutPaddingLeftRightPx,
                 mDp.workspacePadding.top,
-                mDp.workspacePadding.right + mDp.cellLayoutPaddingLeftRightPx,
+                mDp.workspacePadding.right,
                 mDp.workspacePadding.bottom);
+        mWorkspaceScreens.put(FIRST_SCREEN_ID, firstScreen);
+
+        if (mDp.isTwoPanels) {
+            CellLayout rightPanel = mRootView.findViewById(R.id.workspace_right);
+            rightPanel.setPadding(mDp.workspacePadding.left,
+                    mDp.workspacePadding.top,
+                    mDp.workspacePadding.right + mDp.cellLayoutPaddingLeftRightPx,
+                    mDp.workspacePadding.bottom);
+            mWorkspaceScreens.put(PreviewSurfaceRenderer.SECOND_SCREEN_ID, rightPanel);
+        }
 
         if (Utilities.ATLEAST_S) {
             WallpaperColors wallpaperColors = wallpaperColorsOverride != null
@@ -273,6 +291,9 @@
         } else {
             mWallpaperColorResources = null;
         }
+        mAppWidgetHost = FeatureFlags.WIDGETS_IN_LAUNCHER_PREVIEW.get()
+                ? new LauncherPreviewAppWidgetHost(context)
+                : null;
     }
 
     /** Populate preview and render it. */
@@ -330,18 +351,20 @@
 
     @Override
     public CellLayout getScreenWithId(int screenId) {
-        return mWorkspace;
+        return mWorkspaceScreens.get(screenId);
     }
 
     private void inflateAndAddIcon(WorkspaceItemInfo info) {
+        CellLayout screen = mWorkspaceScreens.get(info.screenId);
         BubbleTextView icon = (BubbleTextView) mHomeElementInflater.inflate(
-                R.layout.app_icon, mWorkspace, false);
+                R.layout.app_icon, screen, false);
         icon.applyFromWorkspaceItem(info);
         addInScreenFromBind(icon, info);
     }
 
     private void inflateAndAddFolder(FolderInfo info) {
-        FolderIcon folderIcon = FolderIcon.inflateIcon(R.layout.folder_icon, this, mWorkspace,
+        CellLayout screen = mWorkspaceScreens.get(info.screenId);
+        FolderIcon folderIcon = FolderIcon.inflateIcon(R.layout.folder_icon, this, screen,
                 info);
         addInScreenFromBind(folderIcon, info);
     }
@@ -372,20 +395,31 @@
 
     private void inflateAndAddWidgets(
             LauncherAppWidgetInfo info, LauncherAppWidgetProviderInfo providerInfo) {
-        AppWidgetHostView view = new AppWidgetHostView(mContext);
-        view.setAppWidget(-1, providerInfo);
-        view.updateAppWidget(null);
-        view.setTag(info);
+        AppWidgetHostView view;
+        if (FeatureFlags.WIDGETS_IN_LAUNCHER_PREVIEW.get()) {
+            view = mAppWidgetHost.createView(mContext, info.appWidgetId, providerInfo);
+        } else {
+            view = new NavigableAppWidgetHostView(this) {
+                @Override
+                protected boolean shouldAllowDirectClick() {
+                    return false;
+                }
+            };
+            view.setAppWidget(-1, providerInfo);
+            view.updateAppWidget(null);
+        }
 
         if (mWallpaperColorResources != null) {
             view.setColorResources(mWallpaperColorResources);
         }
 
+        view.setTag(info);
         addInScreenFromBind(view, info);
     }
 
     private void inflateAndAddPredictedIcon(WorkspaceItemInfo info) {
-        View view = PredictedAppIconInflater.inflate(mHomeElementInflater, mWorkspace, info);
+        CellLayout screen = mWorkspaceScreens.get(info.screenId);
+        View view = PredictedAppIconInflater.inflate(mHomeElementInflater, screen, info);
         if (view != null) {
             addInScreenFromBind(view, info);
         }
@@ -416,11 +450,13 @@
         ArrayList<ItemInfo> otherWorkspaceItems = new ArrayList<>();
         ArrayList<LauncherAppWidgetInfo> currentAppWidgets = new ArrayList<>();
         ArrayList<LauncherAppWidgetInfo> otherAppWidgets = new ArrayList<>();
-        filterCurrentWorkspaceItems(0 /* currentScreenId */,
-                dataModel.workspaceItems, currentWorkspaceItems,
-                otherWorkspaceItems);
-        filterCurrentWorkspaceItems(0 /* currentScreenId */, dataModel.appWidgets,
-                currentAppWidgets, otherAppWidgets);
+
+        IntSet currentScreenIds = IntSet.wrap(mWorkspaceScreens.keySet());
+        filterCurrentWorkspaceItems(currentScreenIds, dataModel.workspaceItems,
+                currentWorkspaceItems, otherWorkspaceItems);
+        filterCurrentWorkspaceItems(currentScreenIds, dataModel.appWidgets, currentAppWidgets,
+                otherAppWidgets);
+
         sortWorkspaceItemsSpatially(mIdp, currentWorkspaceItems);
         for (ItemInfo itemInfo : currentWorkspaceItems) {
             switch (itemInfo.itemType) {
@@ -473,12 +509,13 @@
 
         // Add first page QSB
         if (FeatureFlags.QSB_ON_FIRST_SCREEN) {
+            CellLayout firstScreen = mWorkspaceScreens.get(FIRST_SCREEN_ID);
             View qsb = mHomeElementInflater.inflate(
-                    R.layout.search_container_workspace, mWorkspace, false);
+                    R.layout.search_container_workspace, firstScreen, false);
             CellLayout.LayoutParams lp =
-                    new CellLayout.LayoutParams(0, 0, mWorkspace.getCountX(), 1);
+                    new CellLayout.LayoutParams(0, 0, firstScreen.getCountX(), 1);
             lp.canReorder = false;
-            mWorkspace.addViewToCellLayout(qsb, 0, R.id.search_container_workspace, lp, true);
+            firstScreen.addViewToCellLayout(qsb, 0, R.id.search_container_workspace, lp, true);
         }
 
         measureView(mRootView, mDp.widthPx, mDp.heightPx);
@@ -493,6 +530,32 @@
         view.layout(0, 0, width, height);
     }
 
+    private class LauncherPreviewAppWidgetHost extends AppWidgetHost {
+
+        private LauncherPreviewAppWidgetHost(Context context) {
+            super(context, LauncherAppWidgetHost.APPWIDGET_HOST_ID);
+        }
+
+        @Override
+        protected AppWidgetHostView onCreateView(
+                Context context,
+                int appWidgetId,
+                AppWidgetProviderInfo appWidget) {
+            return new LauncherPreviewAppWidgetHostView(LauncherPreviewRenderer.this);
+        }
+    }
+
+    private static class LauncherPreviewAppWidgetHostView extends BaseLauncherAppWidgetHostView {
+        private LauncherPreviewAppWidgetHostView(Context context) {
+            super(context);
+        }
+
+        @Override
+        protected boolean shouldAllowDirectClick() {
+            return false;
+        }
+    }
+
     /** Root layout for launcher preview that intercepts all touch events. */
     public static class LauncherPreviewLayout extends InsettableFrameLayout {
         public LauncherPreviewLayout(Context context, AttributeSet attrs) {
diff --git a/src/com/android/launcher3/graphics/PreloadIconDrawable.java b/src/com/android/launcher3/graphics/PreloadIconDrawable.java
index e45b8f7..24d6fe5 100644
--- a/src/com/android/launcher3/graphics/PreloadIconDrawable.java
+++ b/src/com/android/launcher3/graphics/PreloadIconDrawable.java
@@ -142,7 +142,7 @@
         mSystemBackgroundColor = preloadColors[PRELOAD_BACKGROUND_COLOR_INDEX];
         mIsDarkMode = isDarkMode;
 
-        setInternalProgress(info.getProgressLevel());
+        setLevel(info.getProgressLevel());
         setIsStartable(info.isAppStartable());
     }
 
diff --git a/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java b/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java
index 3b140a0..af006d6 100644
--- a/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java
+++ b/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java
@@ -16,7 +16,6 @@
 
 package com.android.launcher3.graphics;
 
-import static com.android.launcher3.config.FeatureFlags.MULTI_DB_GRID_MIRATION_ALGO;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 
@@ -38,14 +37,15 @@
 import androidx.annotation.UiThread;
 import androidx.annotation.WorkerThread;
 
+import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.Workspace;
 import com.android.launcher3.graphics.LauncherPreviewRenderer.PreviewContext;
 import com.android.launcher3.model.BgDataModel;
-import com.android.launcher3.model.GridSizeMigrationTask;
 import com.android.launcher3.model.GridSizeMigrationTaskV2;
 import com.android.launcher3.model.LoaderTask;
 import com.android.launcher3.model.ModelDelegate;
@@ -66,6 +66,9 @@
 
     private static final int FADE_IN_ANIMATION_DURATION = 200;
 
+    // The is the second screen. It is always present in two panel, even if its empty.
+    static final int SECOND_SCREEN_ID = 1;
+
     private static final String KEY_HOST_TOKEN = "host_token";
     private static final String KEY_VIEW_WIDTH = "width";
     private static final String KEY_VIEW_HEIGHT = "height";
@@ -162,10 +165,18 @@
 
                 @Override
                 public void run() {
+                    DeviceProfile deviceProfile = mIdp.getDeviceProfile(previewContext);
+                    String query =
+                            LauncherSettings.Favorites.SCREEN + " = " + Workspace.FIRST_SCREEN_ID
+                            + " or " + LauncherSettings.Favorites.CONTAINER + " = "
+                            + LauncherSettings.Favorites.CONTAINER_HOTSEAT;
+                    if (deviceProfile.isTwoPanels) {
+                        query += " or " + LauncherSettings.Favorites.SCREEN + " = "
+                                + SECOND_SCREEN_ID;
+                    }
                     loadWorkspace(new ArrayList<>(), LauncherSettings.Favorites.PREVIEW_CONTENT_URI,
-                            LauncherSettings.Favorites.SCREEN + " = 0 or "
-                                    + LauncherSettings.Favorites.CONTAINER + " = "
-                                    + LauncherSettings.Favorites.CONTAINER_HOTSEAT);
+                            query);
+
                     MAIN_EXECUTOR.execute(() -> {
                         renderView(previewContext, mBgDataModel, mWidgetProvidersMap);
                         mOnDestroyCallbacks.add(previewContext::onDestroy);
@@ -185,16 +196,10 @@
 
     @WorkerThread
     private boolean doGridMigrationIfNecessary() {
-        boolean needsToMigrate =
-                MULTI_DB_GRID_MIRATION_ALGO.get()
-                        ? GridSizeMigrationTaskV2.needsToMigrate(mContext, mIdp)
-                        : GridSizeMigrationTask.needsToMigrate(mContext, mIdp);
-        if (!needsToMigrate) {
+        if (!GridSizeMigrationTaskV2.needsToMigrate(mContext, mIdp)) {
             return false;
         }
-        return MULTI_DB_GRID_MIRATION_ALGO.get()
-                ? GridSizeMigrationTaskV2.migrateGridIfNeeded(mContext, mIdp)
-                : GridSizeMigrationTask.migrateGridIfNeeded(mContext, mIdp);
+        return GridSizeMigrationTaskV2.migrateGridIfNeeded(mContext, mIdp);
     }
 
     @UiThread
diff --git a/src/com/android/launcher3/logging/StatsLogManager.java b/src/com/android/launcher3/logging/StatsLogManager.java
index 79e5b5d..d959ee2 100644
--- a/src/com/android/launcher3/logging/StatsLogManager.java
+++ b/src/com/android/launcher3/logging/StatsLogManager.java
@@ -486,7 +486,10 @@
         LAUNCHER_TURN_ON_WORK_APPS_TAP(838),
 
         @UiEvent(doc = "User tapped on 'Turn off work apps' button in all apps window.")
-        LAUNCHER_TURN_OFF_WORK_APPS_TAP(839)
+        LAUNCHER_TURN_OFF_WORK_APPS_TAP(839),
+
+        @UiEvent(doc = "Launcher item drop failed since there was not enough room on the screen.")
+        LAUNCHER_ITEM_DROP_FAILED_INSUFFICIENT_SPACE(872)
         ;
 
         // ADD MORE
diff --git a/src/com/android/launcher3/model/AddWorkspaceItemsTask.java b/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
index 01b3e6e..a13fa55 100644
--- a/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
+++ b/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
@@ -15,6 +15,8 @@
  */
 package com.android.launcher3.model;
 
+import static com.android.launcher3.WorkspaceLayoutManager.FIRST_SCREEN_ID;
+
 import android.content.Intent;
 import android.content.pm.LauncherActivityInfo;
 import android.content.pm.LauncherApps;
@@ -27,6 +29,7 @@
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel.CallbackTask;
 import com.android.launcher3.LauncherSettings;
+import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.model.data.AppInfo;
@@ -38,6 +41,7 @@
 import com.android.launcher3.pm.PackageInstallInfo;
 import com.android.launcher3.util.GridOccupancy;
 import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.PackageManagerHelper;
 
 import java.util.ArrayList;
@@ -287,28 +291,23 @@
 
         // Find appropriate space for the item.
         int screenId = 0;
-        int[] cordinates = new int[2];
+        int[] coordinates = new int[2];
         boolean found = false;
 
         int screenCount = workspaceScreens.size();
         // First check the preferred screen.
-        int preferredScreenIndex = workspaceScreens.isEmpty() ? 0 : 1;
-        if (preferredScreenIndex < screenCount) {
-            screenId = workspaceScreens.get(preferredScreenIndex);
-            found = findNextAvailableIconSpaceInScreen(
-                    app, screenItems.get(screenId), cordinates, spanX, spanY);
+        IntSet screensToExclude = new IntSet();
+        if (FeatureFlags.QSB_ON_FIRST_SCREEN) {
+            screensToExclude.add(FIRST_SCREEN_ID);
         }
 
-        if (!found) {
-            // Search on any of the screens starting from the first screen.
-            for (int screen = 1; screen < screenCount; screen++) {
-                screenId = workspaceScreens.get(screen);
-                if (findNextAvailableIconSpaceInScreen(
-                        app, screenItems.get(screenId), cordinates, spanX, spanY)) {
-                    // We found a space for it
-                    found = true;
-                    break;
-                }
+        for (int screen = 0; screen < screenCount; screen++) {
+            screenId = workspaceScreens.get(screen);
+            if (!screensToExclude.contains(screenId) && findNextAvailableIconSpaceInScreen(
+                    app, screenItems.get(screenId), coordinates, spanX, spanY)) {
+                // We found a space for it
+                found = true;
+                break;
             }
         }
 
@@ -324,11 +323,11 @@
 
             // If we still can't find an empty space, then God help us all!!!
             if (!findNextAvailableIconSpaceInScreen(
-                    app, screenItems.get(screenId), cordinates, spanX, spanY)) {
+                    app, screenItems.get(screenId), coordinates, spanX, spanY)) {
                 throw new RuntimeException("Can't find space to add the item");
             }
         }
-        return new int[] {screenId, cordinates[0], cordinates[1]};
+        return new int[] {screenId, coordinates[0], coordinates[1]};
     }
 
     private boolean findNextAvailableIconSpaceInScreen(
diff --git a/src/com/android/launcher3/model/BaseLoaderResults.java b/src/com/android/launcher3/model/BaseLoaderResults.java
index 5c85bab..0e132c2 100644
--- a/src/com/android/launcher3/model/BaseLoaderResults.java
+++ b/src/com/android/launcher3/model/BaseLoaderResults.java
@@ -16,24 +16,27 @@
 
 package com.android.launcher3.model;
 
+import static com.android.launcher3.model.ItemInstallQueue.FLAG_LOADER_RUNNING;
 import static com.android.launcher3.model.ModelUtils.filterCurrentWorkspaceItems;
 import static com.android.launcher3.model.ModelUtils.sortWorkspaceItemsSpatially;
+import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 
+import android.os.Process;
 import android.util.Log;
 
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel.CallbackTask;
-import com.android.launcher3.PagedView;
 import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.model.BgDataModel.FixedContainerItems;
 import com.android.launcher3.model.data.AppInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.LooperExecutor;
 import com.android.launcher3.util.LooperIdleLock;
-import com.android.launcher3.util.ViewOnDrawExecutor;
+import com.android.launcher3.util.RunnableList;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -71,7 +74,7 @@
     /**
      * Binds all loaded data to actual views on the main thread.
      */
-    public void bindWorkspace() {
+    public void bindWorkspace(boolean incrementBindId) {
         // Save a copy of all the bg-thread collections
         ArrayList<ItemInfo> workspaceItems = new ArrayList<>();
         ArrayList<LauncherAppWidgetInfo> appWidgets = new ArrayList<>();
@@ -83,7 +86,9 @@
             appWidgets.addAll(mBgDataModel.appWidgets);
             orderedScreenIds.addAll(mBgDataModel.collectWorkspaceScreens());
             mBgDataModel.extraItems.forEach(extraItems::add);
-            mBgDataModel.lastBindId++;
+            if (incrementBindId) {
+                mBgDataModel.lastBindId++;
+            }
             mMyBindingId = mBgDataModel.lastBindId;
         }
 
@@ -160,20 +165,7 @@
         }
 
         private void bind() {
-            final int currentScreen;
-            {
-                // Create an anonymous scope to calculate currentScreen as it has to be a
-                // final variable.
-                int currScreen = mCallbacks.getPageToBindSynchronously();
-                if (currScreen >= mOrderedScreenIds.size()) {
-                    // There may be no workspace screens (just hotseat items and an empty page).
-                    currScreen = PagedView.INVALID_PAGE;
-                }
-                currentScreen = currScreen;
-            }
-            final boolean validFirstPage = currentScreen >= 0;
-            final int currentScreenId =
-                    validFirstPage ? mOrderedScreenIds.get(currentScreen) : INVALID_SCREEN_ID;
+            IntSet currentScreenIds = mCallbacks.getPagesToBindSynchronously(mOrderedScreenIds);
 
             // Separate the items that are on the current screen, and all the other remaining items
             ArrayList<ItemInfo> currentWorkspaceItems = new ArrayList<>();
@@ -181,9 +173,9 @@
             ArrayList<LauncherAppWidgetInfo> currentAppWidgets = new ArrayList<>();
             ArrayList<LauncherAppWidgetInfo> otherAppWidgets = new ArrayList<>();
 
-            filterCurrentWorkspaceItems(currentScreenId, mWorkspaceItems, currentWorkspaceItems,
+            filterCurrentWorkspaceItems(currentScreenIds, mWorkspaceItems, currentWorkspaceItems,
                     otherWorkspaceItems);
-            filterCurrentWorkspaceItems(currentScreenId, mAppWidgets, currentAppWidgets,
+            filterCurrentWorkspaceItems(currentScreenIds, mAppWidgets, currentAppWidgets,
                     otherAppWidgets);
             final InvariantDeviceProfile idp = mApp.getInvariantDeviceProfile();
             sortWorkspaceItemsSpatially(idp, currentWorkspaceItems);
@@ -198,40 +190,29 @@
             // Bind workspace screens
             executeCallbacksTask(c -> c.bindScreens(mOrderedScreenIds), mUiExecutor);
 
-            Executor mainExecutor = mUiExecutor;
             // Load items on the current page.
-            bindWorkspaceItems(currentWorkspaceItems, mainExecutor);
-            bindAppWidgets(currentAppWidgets, mainExecutor);
+            bindWorkspaceItems(currentWorkspaceItems, mUiExecutor);
+            bindAppWidgets(currentAppWidgets, mUiExecutor);
             mExtraItems.forEach(item ->
-                    executeCallbacksTask(c -> c.bindExtraContainerItems(item), mainExecutor));
+                    executeCallbacksTask(c -> c.bindExtraContainerItems(item), mUiExecutor));
 
-            // In case of validFirstPage, only bind the first screen, and defer binding the
-            // remaining screens after first onDraw (and an optional the fade animation whichever
-            // happens later).
-            // This ensures that the first screen is immediately visible (eg. during rotation)
-            // In case of !validFirstPage, bind all pages one after other.
+            RunnableList pendingTasks = new RunnableList();
+            Executor pendingExecutor = pendingTasks::add;
+            bindWorkspaceItems(otherWorkspaceItems, pendingExecutor);
+            bindAppWidgets(otherAppWidgets, pendingExecutor);
+            executeCallbacksTask(c -> c.finishBindingItems(currentScreenIds), pendingExecutor);
+            pendingExecutor.execute(
+                    () -> {
+                        MODEL_EXECUTOR.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT);
+                        ItemInstallQueue.INSTANCE.get(mApp.getContext())
+                                .resumeModelPush(FLAG_LOADER_RUNNING);
+                    });
 
-            final Executor deferredExecutor =
-                    validFirstPage ? new ViewOnDrawExecutor() : mainExecutor;
-
-            executeCallbacksTask(c -> c.finishFirstPageBind(
-                    validFirstPage ? (ViewOnDrawExecutor) deferredExecutor : null), mainExecutor);
-
-            bindWorkspaceItems(otherWorkspaceItems, deferredExecutor);
-            bindAppWidgets(otherAppWidgets, deferredExecutor);
-            // Tell the workspace that we're done binding items
-            executeCallbacksTask(c -> c.finishBindingItems(currentScreen), deferredExecutor);
-
-            if (validFirstPage) {
-                executeCallbacksTask(c -> {
-                    // We are loading synchronously, which means, some of the pages will be
-                    // bound after first draw. Inform the mCallbacks that page binding is
-                    // not complete, and schedule the remaining pages.
-                    c.onPageBoundSynchronously(currentScreen);
-                    c.executeOnNextDraw((ViewOnDrawExecutor) deferredExecutor);
-
-                }, mUiExecutor);
-            }
+            executeCallbacksTask(
+                    c -> {
+                        MODEL_EXECUTOR.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
+                        c.onInitialBindComplete(currentScreenIds, pendingTasks);
+                    }, mUiExecutor);
         }
 
         private void bindWorkspaceItems(
diff --git a/src/com/android/launcher3/model/BaseModelUpdateTask.java b/src/com/android/launcher3/model/BaseModelUpdateTask.java
index ad553d5..a3a4717 100644
--- a/src/com/android/launcher3/model/BaseModelUpdateTask.java
+++ b/src/com/android/launcher3/model/BaseModelUpdateTask.java
@@ -90,7 +90,7 @@
     public ModelWriter getModelWriter() {
         // Updates from model task, do not deal with icon position in hotseat. Also no need to
         // verify changes as the ModelTasks always push the changes to callbacks
-        return mModel.getWriter(false /* hasVerticalHotseat */, false /* verifyChanges */);
+        return mModel.getWriter(false /* hasVerticalHotseat */, false /* verifyChanges */, null);
     }
 
     public void bindUpdatedWorkspaceItems(List<WorkspaceItemInfo> allUpdates) {
diff --git a/src/com/android/launcher3/model/BgDataModel.java b/src/com/android/launcher3/model/BgDataModel.java
index 1d7d1a2..13ad90e 100644
--- a/src/com/android/launcher3/model/BgDataModel.java
+++ b/src/com/android/launcher3/model/BgDataModel.java
@@ -49,7 +49,7 @@
 import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.ItemInfoMatcher;
-import com.android.launcher3.util.ViewOnDrawExecutor;
+import com.android.launcher3.util.RunnableList;
 import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 
 import java.io.FileDescriptor;
@@ -446,37 +446,50 @@
         int FLAG_QUIET_MODE_CHANGE_PERMISSION = 1 << 2;
 
         /**
-         * Returns the page number to bind first, synchronously if possible or -1
+         * Returns an IntSet of page ids to bind first, synchronously if possible
+         * or an empty IntSet
+         * @param orderedScreenIds All the page ids to be bound
          */
-        int getPageToBindSynchronously();
-        void clearPendingBinds();
-        void startBinding();
-        void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons);
-        void bindScreens(IntArray orderedScreenIds);
-        void finishFirstPageBind(ViewOnDrawExecutor executor);
-        void finishBindingItems(int pageBoundFirst);
-        void preAddApps();
-        void bindAppsAdded(IntArray newScreens,
-                ArrayList<ItemInfo> addNotAnimated, ArrayList<ItemInfo> addAnimated);
+        default IntSet getPagesToBindSynchronously(IntArray orderedScreenIds) {
+            return new IntSet();
+        }
+
+        default void clearPendingBinds() { }
+        default void startBinding() { }
+
+        default void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons) { }
+        default void bindScreens(IntArray orderedScreenIds) { }
+        default void finishBindingItems(IntSet pagesBoundFirst) { }
+        default void preAddApps() { }
+        default void bindAppsAdded(IntArray newScreens,
+                ArrayList<ItemInfo> addNotAnimated, ArrayList<ItemInfo> addAnimated) { }
+
+        /**
+         * Called when some persistent property of an item is modified
+         */
+        default void bindItemsModified(List<ItemInfo> items) { }
 
         /**
          * Binds updated incremental download progress
          */
-        void bindIncrementalDownloadProgressUpdated(AppInfo app);
-        void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated);
-        void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets);
-        void bindRestoreItemsChange(HashSet<ItemInfo> updates);
-        void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher);
-        void bindAllWidgets(List<WidgetsListBaseEntry> widgets);
-        void onPageBoundSynchronously(int page);
-        void executeOnNextDraw(ViewOnDrawExecutor executor);
-        void bindDeepShortcutMap(HashMap<ComponentKey, Integer> deepShortcutMap);
+        default void bindIncrementalDownloadProgressUpdated(AppInfo app) { }
+        default void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) { }
+        default void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets) { }
+        default void bindRestoreItemsChange(HashSet<ItemInfo> updates) { }
+        default void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher) { }
+        default void bindAllWidgets(List<WidgetsListBaseEntry> widgets) { }
+
+        default void onInitialBindComplete(IntSet boundPages, RunnableList pendingTasks) {
+            pendingTasks.executeAllAndDestroy();
+        }
+
+        default void bindDeepShortcutMap(HashMap<ComponentKey, Integer> deepShortcutMap) { }
 
         /**
          * Binds extra item provided any external source
          */
         default void bindExtraContainerItems(FixedContainerItems item) { }
 
-        void bindAllApplications(AppInfo[] apps, int flags);
+        default void bindAllApplications(AppInfo[] apps, int flags) { }
     }
 }
diff --git a/src/com/android/launcher3/model/DeviceGridState.java b/src/com/android/launcher3/model/DeviceGridState.java
new file mode 100644
index 0000000..761053d
--- /dev/null
+++ b/src/com/android/launcher3/model/DeviceGridState.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.model;
+
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_2;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_3;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_4;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_5;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.text.TextUtils;
+
+import com.android.launcher3.InvariantDeviceProfile;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.logging.StatsLogManager.LauncherEvent;
+
+import java.util.Locale;
+import java.util.Objects;
+
+/**
+ * Utility class representing persisted grid properties.
+ */
+public class DeviceGridState {
+
+    public static final String KEY_WORKSPACE_SIZE = "migration_src_workspace_size";
+    public static final String KEY_HOTSEAT_COUNT = "migration_src_hotseat_count";
+    public static final String KEY_DEVICE_TYPE = "migration_src_device_type";
+
+    public static final int TYPE_PHONE = 0;
+    public static final int TYPE_MULTI_DISPLAY = 1;
+    public static final int TYPE_TABLET = 2;
+
+    private final String mGridSizeString;
+    private final int mNumHotseat;
+    private final int mDeviceType;
+
+    public DeviceGridState(InvariantDeviceProfile idp) {
+        mGridSizeString = String.format(Locale.ENGLISH, "%d,%d", idp.numColumns, idp.numRows);
+        mNumHotseat = idp.numDatabaseHotseatIcons;
+        mDeviceType = idp.supportedProfiles.size() > 2
+                ? TYPE_MULTI_DISPLAY
+                : idp.supportedProfiles.stream().allMatch(dp -> dp.isTablet)
+                        ? TYPE_TABLET
+                        : TYPE_PHONE;
+    }
+
+    public DeviceGridState(Context context) {
+        SharedPreferences prefs = Utilities.getPrefs(context);
+        mGridSizeString = prefs.getString(KEY_WORKSPACE_SIZE, "");
+        mNumHotseat = prefs.getInt(KEY_HOTSEAT_COUNT, -1);
+        mDeviceType = prefs.getInt(KEY_DEVICE_TYPE, TYPE_PHONE);
+    }
+
+    /**
+     * Returns the device type for the grid
+     */
+    public int getDeviceType() {
+        return mDeviceType;
+    }
+
+    /**
+     * Stores the device state to shared preferences
+     */
+    public void writeToPrefs(Context context) {
+        Utilities.getPrefs(context).edit()
+                .putString(KEY_WORKSPACE_SIZE, mGridSizeString)
+                .putInt(KEY_HOTSEAT_COUNT, mNumHotseat)
+                .putInt(KEY_DEVICE_TYPE, mDeviceType)
+                .apply();
+    }
+
+    /**
+     * Returns the logging event corresponding to the grid state
+     */
+    public LauncherEvent getWorkspaceSizeEvent() {
+        if (!TextUtils.isEmpty(mGridSizeString)) {
+            switch (mGridSizeString.charAt(0)) {
+                case '5':
+                    return LAUNCHER_GRID_SIZE_5;
+                case '4':
+                    return LAUNCHER_GRID_SIZE_4;
+                case '3':
+                    return LAUNCHER_GRID_SIZE_3;
+                case '2':
+                    return LAUNCHER_GRID_SIZE_2;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        DeviceGridState that = (DeviceGridState) o;
+        return mNumHotseat == that.mNumHotseat
+                && mDeviceType == that.mDeviceType
+                && Objects.equals(mGridSizeString, that.mGridSizeString);
+    }
+}
diff --git a/src/com/android/launcher3/model/GridBackupTable.java b/src/com/android/launcher3/model/GridBackupTable.java
index acfc339..51cbf4b 100644
--- a/src/com/android/launcher3/model/GridBackupTable.java
+++ b/src/com/android/launcher3/model/GridBackupTable.java
@@ -23,14 +23,12 @@
 import android.content.Context;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
-import android.graphics.Point;
 import android.os.Process;
 import android.util.Log;
 
 import androidx.annotation.IntDef;
 
 import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.LauncherSettings.Settings;
 import com.android.launcher3.pm.UserCache;
 
 /**
@@ -85,49 +83,6 @@
     }
 
     /**
-     * Create a backup from current workspace layout if one isn't created already (Note backup
-     * created this way is always sanitized). Otherwise restore from the backup instead.
-     */
-    public boolean backupOrRestoreAsNeeded() {
-        // Check if backup table exists
-        if (!tableExists(mDb, BACKUP_TABLE_NAME)) {
-            if (Settings.call(mContext.getContentResolver(), Settings.METHOD_WAS_EMPTY_DB_CREATED)
-                    .getBoolean(Settings.EXTRA_VALUE, false)) {
-                // No need to copy if empty DB was created.
-                return false;
-            }
-            doBackup(UserCache.INSTANCE.get(mContext).getSerialNumberForUser(
-                    Process.myUserHandle()), 0);
-            return false;
-        }
-        return restoreIfBackupExists(Favorites.TABLE_NAME);
-    }
-
-    public boolean restoreToPreviewIfBackupExists() {
-        if (!tableExists(mDb, BACKUP_TABLE_NAME)) {
-            return false;
-        }
-
-        return restoreIfBackupExists(Favorites.PREVIEW_TABLE_NAME);
-    }
-
-    private boolean restoreIfBackupExists(String toTableName) {
-        if (loadDBProperties() != STATE_SANITIZED) {
-            return false;
-        }
-        long userSerial = UserCache.INSTANCE.get(mContext).getSerialNumberForUser(
-                Process.myUserHandle());
-        copyTable(mDb, BACKUP_TABLE_NAME, toTableName, userSerial);
-        Log.d(TAG, "Backup table found");
-        return true;
-    }
-
-    public int getRestoreHotseatAndGridSize(Point outGridSize) {
-        outGridSize.set(mRestoredGridX, mRestoredGridY);
-        return mRestoredHotseatSize;
-    }
-
-    /**
      * Creates a new table and populates with copy of Favorites.TABLE_NAME
      */
     public void createCustomBackupTable(String tableName) {
diff --git a/src/com/android/launcher3/model/GridSizeMigrationTask.java b/src/com/android/launcher3/model/GridSizeMigrationTask.java
deleted file mode 100644
index 7b3e509..0000000
--- a/src/com/android/launcher3/model/GridSizeMigrationTask.java
+++ /dev/null
@@ -1,1098 +0,0 @@
-package com.android.launcher3.model;
-
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_HOTSEAT_COUNT;
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_WORKSPACE_SIZE;
-import static com.android.launcher3.LauncherSettings.Settings.EXTRA_VALUE;
-import static com.android.launcher3.Utilities.getPointString;
-import static com.android.launcher3.Utilities.parsePoint;
-import static com.android.launcher3.provider.LauncherDbUtils.copyTable;
-
-import android.content.ComponentName;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.graphics.Point;
-import android.os.SystemClock;
-import android.util.Log;
-import android.util.SparseArray;
-
-import androidx.annotation.VisibleForTesting;
-
-import com.android.launcher3.InvariantDeviceProfile;
-import com.android.launcher3.LauncherAppState;
-import com.android.launcher3.LauncherSettings;
-import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.LauncherSettings.Settings;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.graphics.LauncherPreviewRenderer;
-import com.android.launcher3.model.data.ItemInfo;
-import com.android.launcher3.pm.InstallSessionHelper;
-import com.android.launcher3.provider.LauncherDbUtils;
-import com.android.launcher3.provider.LauncherDbUtils.SQLiteTransaction;
-import com.android.launcher3.util.GridOccupancy;
-import com.android.launcher3.util.IntArray;
-import com.android.launcher3.util.IntSparseArrayMap;
-import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
-import com.android.launcher3.widget.WidgetManagerHelper;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashSet;
-
-/**
- * This class takes care of shrinking the workspace (by maximum of one row and one column), as a
- * result of restoring from a larger device or device density change.
- */
-public class GridSizeMigrationTask {
-
-    private static final String TAG = "GridSizeMigrationTask";
-    private static final boolean DEBUG = false;
-
-    // These are carefully selected weights for various item types (Math.random?), to allow for
-    // the least absurd migration experience.
-    private static final float WT_SHORTCUT = 1;
-    private static final float WT_APPLICATION = 0.8f;
-    private static final float WT_WIDGET_MIN = 2;
-    private static final float WT_WIDGET_FACTOR = 0.6f;
-    private static final float WT_FOLDER_FACTOR = 0.5f;
-
-    protected final SQLiteDatabase mDb;
-    protected final Context mContext;
-
-    protected final IntArray mEntryToRemove = new IntArray();
-    protected final ArrayList<DbEntry> mCarryOver = new ArrayList<>();
-
-    private final SparseArray<ContentValues> mUpdateOperations = new SparseArray<>();
-    private final HashSet<String> mValidPackages;
-    private final String mTableName;
-
-    private final int mSrcX, mSrcY;
-    private final int mTrgX, mTrgY;
-    private final boolean mShouldRemoveX, mShouldRemoveY;
-
-    private final int mSrcHotseatSize;
-    private final int mDestHotseatSize;
-
-    protected GridSizeMigrationTask(Context context, SQLiteDatabase db,
-            HashSet<String> validPackages, boolean usePreviewTable, Point sourceSize,
-            Point targetSize) {
-        mContext = context;
-        mDb = db;
-        mValidPackages = validPackages;
-        mTableName = usePreviewTable ? Favorites.PREVIEW_TABLE_NAME : Favorites.TABLE_NAME;
-
-        mSrcX = sourceSize.x;
-        mSrcY = sourceSize.y;
-
-        mTrgX = targetSize.x;
-        mTrgY = targetSize.y;
-
-        mShouldRemoveX = mTrgX < mSrcX;
-        mShouldRemoveY = mTrgY < mSrcY;
-
-        // Non-used variables
-        mSrcHotseatSize = mDestHotseatSize = -1;
-    }
-
-    protected GridSizeMigrationTask(Context context, SQLiteDatabase db,
-            HashSet<String> validPackages, boolean usePreviewTable, int srcHotseatSize,
-            int destHotseatSize) {
-        mContext = context;
-        mDb = db;
-        mValidPackages = validPackages;
-        mTableName = usePreviewTable ? Favorites.PREVIEW_TABLE_NAME : Favorites.TABLE_NAME;
-
-        mSrcHotseatSize = srcHotseatSize;
-
-        mDestHotseatSize = destHotseatSize;
-
-        // Non-used variables
-        mSrcX = mSrcY = mTrgX = mTrgY = -1;
-        mShouldRemoveX = mShouldRemoveY = false;
-    }
-
-    /**
-     * Applied all the pending DB operations
-     *
-     * @return true if any DB operation was commited.
-     */
-    private boolean applyOperations() throws Exception {
-        // Update items
-        int updateCount = mUpdateOperations.size();
-        for (int i = 0; i < updateCount; i++) {
-            mDb.update(mTableName, mUpdateOperations.valueAt(i),
-                    "_id=" + mUpdateOperations.keyAt(i), null);
-        }
-
-        if (!mEntryToRemove.isEmpty()) {
-            if (DEBUG) {
-                Log.d(TAG, "Removing items: " + mEntryToRemove.toConcatString());
-            }
-            mDb.delete(mTableName, Utilities.createDbSelectionQuery(Favorites._ID, mEntryToRemove),
-                    null);
-        }
-
-        return updateCount > 0 || !mEntryToRemove.isEmpty();
-    }
-
-    /**
-     * To migrate hotseat, we load all the entries in order (LTR or RTL) and arrange them
-     * in the order in the new hotseat while keeping an empty space for all-apps. If the number of
-     * entries is more than what can fit in the new hotseat, we drop the entries with least weight.
-     * For weight calculation {@see #WT_SHORTCUT}, {@see #WT_APPLICATION}
-     * & {@see #WT_FOLDER_FACTOR}.
-     *
-     * @return true if any DB change was made
-     */
-    protected boolean migrateHotseat() throws Exception {
-        ArrayList<DbEntry> items = loadHotseatEntries();
-        while (items.size() > mDestHotseatSize) {
-            // Pick the center item by default.
-            DbEntry toRemove = items.get(items.size() / 2);
-
-            // Find the item with least weight.
-            for (DbEntry entry : items) {
-                if (entry.weight < toRemove.weight) {
-                    toRemove = entry;
-                }
-            }
-
-            mEntryToRemove.add(toRemove.id);
-            items.remove(toRemove);
-        }
-
-        // Update screen IDS
-        int newScreenId = 0;
-        for (DbEntry entry : items) {
-            if (entry.screenId != newScreenId) {
-                entry.screenId = newScreenId;
-
-                // These values does not affect the item position, but we should set them
-                // to something other than -1.
-                entry.cellX = newScreenId;
-                entry.cellY = 0;
-
-                update(entry);
-            }
-
-            newScreenId++;
-        }
-
-        return applyOperations();
-    }
-
-    @VisibleForTesting
-    static IntArray getWorkspaceScreenIds(SQLiteDatabase db, String tableName) {
-        return LauncherDbUtils.queryIntArray(db, tableName, Favorites.SCREEN,
-                Favorites.CONTAINER + " = " + Favorites.CONTAINER_DESKTOP,
-                Favorites.SCREEN, Favorites.SCREEN);
-    }
-
-    /**
-     * @return true if any DB change was made
-     */
-    protected boolean migrateWorkspace() throws Exception {
-        IntArray allScreens = getWorkspaceScreenIds(mDb, mTableName);
-        if (allScreens.isEmpty()) {
-            throw new Exception("Unable to get workspace screens");
-        }
-
-        for (int i = 0; i < allScreens.size(); i++) {
-            int screenId = allScreens.get(i);
-            if (DEBUG) {
-                Log.d(TAG, "Migrating " + screenId);
-            }
-            migrateScreen(screenId);
-        }
-
-        if (!mCarryOver.isEmpty()) {
-            IntSparseArrayMap<DbEntry> itemMap = new IntSparseArrayMap<>();
-            for (DbEntry e : mCarryOver) {
-                itemMap.put(e.id, e);
-            }
-
-            do {
-                // Some items are still remaining. Try adding a few new screens.
-
-                // At every iteration, make sure that at least one item is removed from
-                // {@link #mCarryOver}, to prevent an infinite loop. If no item could be removed,
-                // break the loop and abort migration by throwing an exception.
-                OptimalPlacementSolution placement = new OptimalPlacementSolution(
-                        new GridOccupancy(mTrgX, mTrgY), deepCopy(mCarryOver), 0, true);
-                placement.find();
-                if (placement.finalPlacedItems.size() > 0) {
-                    int newScreenId = LauncherSettings.Settings.call(
-                            mContext.getContentResolver(),
-                            LauncherSettings.Settings.METHOD_NEW_SCREEN_ID)
-                            .getInt(EXTRA_VALUE);
-                    for (DbEntry item : placement.finalPlacedItems) {
-                        if (!mCarryOver.remove(itemMap.get(item.id))) {
-                            throw new Exception("Unable to find matching items");
-                        }
-                        item.screenId = newScreenId;
-                        update(item);
-                    }
-                } else {
-                    throw new Exception("None of the items can be placed on an empty screen");
-                }
-
-            } while (!mCarryOver.isEmpty());
-        }
-        return applyOperations();
-    }
-
-    /**
-     * Migrate a particular screen id.
-     * Strategy:
-     *  1) For all possible combinations of row and column, pick the one which causes the least
-     *    data loss: {@link #tryRemove(int, int, int, ArrayList, float[])}
-     *  2) Maintain a list of all lost items before this screen, and add any new item lost from
-     *    this screen to that list as well.
-     *  3) If all those items from the above list can be placed on this screen, place them
-     *    (otherwise they are placed on a new screen).
-     */
-    protected void migrateScreen(int screenId) {
-        // If we are migrating the first screen, do not touch the first row.
-        int startY = (FeatureFlags.QSB_ON_FIRST_SCREEN && screenId == Workspace.FIRST_SCREEN_ID)
-                ? 1 : 0;
-
-        ArrayList<DbEntry> items = loadWorkspaceEntries(screenId);
-
-        int removedCol = Integer.MAX_VALUE;
-        int removedRow = Integer.MAX_VALUE;
-
-        // removeWt represents the cost function for loss of items during migration, and moveWt
-        // represents the cost function for repositioning the items. moveWt is only considered if
-        // removeWt is same for two different configurations.
-        // Start with Float.MAX_VALUE (assuming full data) and pick the configuration with least
-        // cost.
-        float removeWt = Float.MAX_VALUE;
-        float moveWt = Float.MAX_VALUE;
-        float[] outLoss = new float[2];
-        ArrayList<DbEntry> finalItems = null;
-
-        // Try removing all possible combinations
-        for (int x = 0; x < mSrcX; x++) {
-            // Try removing the rows first from bottom. This keeps the workspace
-            // nicely aligned with hotseat.
-            for (int y = mSrcY - 1; y >= startY; y--) {
-                // Use a deep copy when trying out a particular combination as it can change
-                // the underlying object.
-                ArrayList<DbEntry> itemsOnScreen = tryRemove(x, y, startY, deepCopy(items),
-                        outLoss);
-
-                if ((outLoss[0] < removeWt) || ((outLoss[0] == removeWt) && (outLoss[1]
-                        < moveWt))) {
-                    removeWt = outLoss[0];
-                    moveWt = outLoss[1];
-                    removedCol = mShouldRemoveX ? x : removedCol;
-                    removedRow = mShouldRemoveY ? y : removedRow;
-                    finalItems = itemsOnScreen;
-                }
-
-                // No need to loop over all rows, if a row removal is not needed.
-                if (!mShouldRemoveY) {
-                    break;
-                }
-            }
-
-            if (!mShouldRemoveX) {
-                break;
-            }
-        }
-
-        if (DEBUG) {
-            Log.d(TAG, String.format("Removing row %d, column %d on screen %d",
-                    removedRow, removedCol, screenId));
-        }
-
-        IntSparseArrayMap<DbEntry> itemMap = new IntSparseArrayMap<>();
-        for (DbEntry e : deepCopy(items)) {
-            itemMap.put(e.id, e);
-        }
-
-        for (DbEntry item : finalItems) {
-            DbEntry org = itemMap.get(item.id);
-            itemMap.remove(item.id);
-
-            // Check if update is required
-            if (!item.columnsSame(org)) {
-                update(item);
-            }
-        }
-
-        // The remaining items in {@link #itemMap} are those which didn't get placed.
-        for (DbEntry item : itemMap) {
-            mCarryOver.add(item);
-        }
-
-        if (!mCarryOver.isEmpty() && removeWt == 0) {
-            // No new items were removed in this step. Try placing all the items on this screen.
-            GridOccupancy occupied = new GridOccupancy(mTrgX, mTrgY);
-            occupied.markCells(0, 0, mTrgX, startY, true);
-            for (DbEntry item : finalItems) {
-                occupied.markCells(item, true);
-            }
-
-            OptimalPlacementSolution placement = new OptimalPlacementSolution(occupied,
-                    deepCopy(mCarryOver), startY, true);
-            placement.find();
-            if (placement.lowestWeightLoss == 0) {
-                // All items got placed
-
-                for (DbEntry item : placement.finalPlacedItems) {
-                    item.screenId = screenId;
-                    update(item);
-                }
-
-                mCarryOver.clear();
-            }
-        }
-    }
-
-    /**
-     * Updates an item in the DB.
-     */
-    protected void update(DbEntry item) {
-        ContentValues values = new ContentValues();
-        item.addToContentValues(values);
-        mUpdateOperations.put(item.id, values);
-    }
-
-    /**
-     * Tries the remove the provided row and column.
-     *
-     * @param items   all the items on the screen under operation
-     * @param outLoss array of size 2. The first entry is filled with weight loss, and the second
-     *                with the overall item movement.
-     */
-    private ArrayList<DbEntry> tryRemove(int col, int row, int startY,
-            ArrayList<DbEntry> items, float[] outLoss) {
-        GridOccupancy occupied = new GridOccupancy(mTrgX, mTrgY);
-        occupied.markCells(0, 0, mTrgX, startY, true);
-
-        col = mShouldRemoveX ? col : Integer.MAX_VALUE;
-        row = mShouldRemoveY ? row : Integer.MAX_VALUE;
-
-        ArrayList<DbEntry> finalItems = new ArrayList<>();
-        ArrayList<DbEntry> removedItems = new ArrayList<>();
-
-        for (DbEntry item : items) {
-            if ((item.cellX <= col && (item.spanX + item.cellX) > col)
-                    || (item.cellY <= row && (item.spanY + item.cellY) > row)) {
-                removedItems.add(item);
-                if (item.cellX >= col) item.cellX--;
-                if (item.cellY >= row) item.cellY--;
-            } else {
-                if (item.cellX > col) item.cellX--;
-                if (item.cellY > row) item.cellY--;
-                finalItems.add(item);
-                occupied.markCells(item, true);
-            }
-        }
-
-        OptimalPlacementSolution placement =
-                new OptimalPlacementSolution(occupied, removedItems, startY);
-        placement.find();
-        finalItems.addAll(placement.finalPlacedItems);
-        outLoss[0] = placement.lowestWeightLoss;
-        outLoss[1] = placement.lowestMoveCost;
-        return finalItems;
-    }
-
-    private class OptimalPlacementSolution {
-        private final ArrayList<DbEntry> itemsToPlace;
-        private final GridOccupancy occupied;
-
-        // If set to true, item movement are not considered in move cost, leading to a more
-        // linear placement.
-        private final boolean ignoreMove;
-
-        // The first row in the grid from where the placement should start.
-        private final int startY;
-
-        float lowestWeightLoss = Float.MAX_VALUE;
-        float lowestMoveCost = Float.MAX_VALUE;
-        ArrayList<DbEntry> finalPlacedItems;
-
-        public OptimalPlacementSolution(
-                GridOccupancy occupied, ArrayList<DbEntry> itemsToPlace, int startY) {
-            this(occupied, itemsToPlace, startY, false);
-        }
-
-        public OptimalPlacementSolution(GridOccupancy occupied, ArrayList<DbEntry> itemsToPlace,
-                int startY, boolean ignoreMove) {
-            this.occupied = occupied;
-            this.itemsToPlace = itemsToPlace;
-            this.ignoreMove = ignoreMove;
-            this.startY = startY;
-
-            // Sort the items such that larger widgets appear first followed by 1x1 items
-            Collections.sort(this.itemsToPlace);
-        }
-
-        public void find() {
-            find(0, 0, 0, new ArrayList<DbEntry>());
-        }
-
-        /**
-         * Recursively finds a placement for the provided items.
-         *
-         * @param index       the position in {@link #itemsToPlace} to start looking at.
-         * @param weightLoss  total weight loss upto this point
-         * @param moveCost    total move cost upto this point
-         * @param itemsPlaced all the items already placed upto this point
-         */
-        public void find(int index, float weightLoss, float moveCost,
-                ArrayList<DbEntry> itemsPlaced) {
-            if ((weightLoss >= lowestWeightLoss) ||
-                    ((weightLoss == lowestWeightLoss) && (moveCost >= lowestMoveCost))) {
-                // Abort, as we already have a better solution.
-                return;
-
-            } else if (index >= itemsToPlace.size()) {
-                // End loop.
-                lowestWeightLoss = weightLoss;
-                lowestMoveCost = moveCost;
-
-                // Keep a deep copy of current configuration as it can change during recursion.
-                finalPlacedItems = deepCopy(itemsPlaced);
-                return;
-            }
-
-            DbEntry me = itemsToPlace.get(index);
-            int myX = me.cellX;
-            int myY = me.cellY;
-
-            // List of items to pass over if this item was placed.
-            ArrayList<DbEntry> itemsIncludingMe = new ArrayList<>(itemsPlaced.size() + 1);
-            itemsIncludingMe.addAll(itemsPlaced);
-            itemsIncludingMe.add(me);
-
-            if (me.spanX > 1 || me.spanY > 1) {
-                // If the current item is a widget (and it greater than 1x1), try to place it at
-                // all possible positions. This is because a widget placed at one position can
-                // affect the placement of a different widget.
-                int myW = me.spanX;
-                int myH = me.spanY;
-
-                for (int y = startY; y < mTrgY; y++) {
-                    for (int x = 0; x < mTrgX; x++) {
-                        float newMoveCost = moveCost;
-                        if (x != myX) {
-                            me.cellX = x;
-                            newMoveCost++;
-                        }
-                        if (y != myY) {
-                            me.cellY = y;
-                            newMoveCost++;
-                        }
-                        if (ignoreMove) {
-                            newMoveCost = moveCost;
-                        }
-
-                        if (occupied.isRegionVacant(x, y, myW, myH)) {
-                            // place at this position and continue search.
-                            occupied.markCells(me, true);
-                            find(index + 1, weightLoss, newMoveCost, itemsIncludingMe);
-                            occupied.markCells(me, false);
-                        }
-
-                        // Try resizing horizontally
-                        if (myW > me.minSpanX && occupied.isRegionVacant(x, y, myW - 1, myH)) {
-                            me.spanX--;
-                            occupied.markCells(me, true);
-                            // 1 extra move cost
-                            find(index + 1, weightLoss, newMoveCost + 1, itemsIncludingMe);
-                            occupied.markCells(me, false);
-                            me.spanX++;
-                        }
-
-                        // Try resizing vertically
-                        if (myH > me.minSpanY && occupied.isRegionVacant(x, y, myW, myH - 1)) {
-                            me.spanY--;
-                            occupied.markCells(me, true);
-                            // 1 extra move cost
-                            find(index + 1, weightLoss, newMoveCost + 1, itemsIncludingMe);
-                            occupied.markCells(me, false);
-                            me.spanY++;
-                        }
-
-                        // Try resizing horizontally & vertically
-                        if (myH > me.minSpanY && myW > me.minSpanX &&
-                                occupied.isRegionVacant(x, y, myW - 1, myH - 1)) {
-                            me.spanX--;
-                            me.spanY--;
-                            occupied.markCells(me, true);
-                            // 2 extra move cost
-                            find(index + 1, weightLoss, newMoveCost + 2, itemsIncludingMe);
-                            occupied.markCells(me, false);
-                            me.spanX++;
-                            me.spanY++;
-                        }
-                        me.cellX = myX;
-                        me.cellY = myY;
-                    }
-                }
-
-                // Finally also try a solution when this item is not included. Trying it in the end
-                // causes it to get skipped in most cases due to higher weight loss, and prevents
-                // unnecessary deep copies of various configurations.
-                find(index + 1, weightLoss + me.weight, moveCost, itemsPlaced);
-            } else {
-                // Since this is a 1x1 item and all the following items are also 1x1, just place
-                // it at 'the most appropriate position' and hope for the best.
-                // The most appropriate position: one with lease straight line distance
-                int newDistance = Integer.MAX_VALUE;
-                int newX = Integer.MAX_VALUE, newY = Integer.MAX_VALUE;
-
-                for (int y = startY; y < mTrgY; y++) {
-                    for (int x = 0; x < mTrgX; x++) {
-                        if (!occupied.cells[x][y]) {
-                            int dist = ignoreMove ? 0 :
-                                    ((me.cellX - x) * (me.cellX - x) + (me.cellY - y) * (me.cellY
-                                            - y));
-                            if (dist < newDistance) {
-                                newX = x;
-                                newY = y;
-                                newDistance = dist;
-                            }
-                        }
-                    }
-                }
-
-                if (newX < mTrgX && newY < mTrgY) {
-                    float newMoveCost = moveCost;
-                    if (newX != myX) {
-                        me.cellX = newX;
-                        newMoveCost++;
-                    }
-                    if (newY != myY) {
-                        me.cellY = newY;
-                        newMoveCost++;
-                    }
-                    if (ignoreMove) {
-                        newMoveCost = moveCost;
-                    }
-                    occupied.markCells(me, true);
-                    find(index + 1, weightLoss, newMoveCost, itemsIncludingMe);
-                    occupied.markCells(me, false);
-                    me.cellX = myX;
-                    me.cellY = myY;
-
-                    // Try to find a solution without this item, only if
-                    //  1) there was at least one space, i.e., we were able to place this item
-                    //  2) if the next item has the same weight (all items are already sorted), as
-                    //     if it has lower weight, that solution will automatically get discarded.
-                    //  3) ignoreMove false otherwise, move cost is ignored and the weight will
-                    //      anyway be same.
-                    if (index + 1 < itemsToPlace.size()
-                            && itemsToPlace.get(index + 1).weight >= me.weight && !ignoreMove) {
-                        find(index + 1, weightLoss + me.weight, moveCost, itemsPlaced);
-                    }
-                } else {
-                    // No more space. Jump to the end.
-                    for (int i = index + 1; i < itemsToPlace.size(); i++) {
-                        weightLoss += itemsToPlace.get(i).weight;
-                    }
-                    find(itemsToPlace.size(), weightLoss + me.weight, moveCost, itemsPlaced);
-                }
-            }
-        }
-    }
-
-    private ArrayList<DbEntry> loadHotseatEntries() {
-        Cursor c = queryWorkspace(
-                new String[]{
-                        Favorites._ID,                  // 0
-                        Favorites.ITEM_TYPE,            // 1
-                        Favorites.INTENT,               // 2
-                        Favorites.SCREEN},              // 3
-                Favorites.CONTAINER + " = " + Favorites.CONTAINER_HOTSEAT);
-
-        final int indexId = c.getColumnIndexOrThrow(Favorites._ID);
-        final int indexItemType = c.getColumnIndexOrThrow(Favorites.ITEM_TYPE);
-        final int indexIntent = c.getColumnIndexOrThrow(Favorites.INTENT);
-        final int indexScreen = c.getColumnIndexOrThrow(Favorites.SCREEN);
-
-        ArrayList<DbEntry> entries = new ArrayList<>();
-        while (c.moveToNext()) {
-            DbEntry entry = new DbEntry();
-            entry.id = c.getInt(indexId);
-            entry.itemType = c.getInt(indexItemType);
-            entry.screenId = c.getInt(indexScreen);
-
-            if (entry.screenId >= mSrcHotseatSize) {
-                mEntryToRemove.add(entry.id);
-                continue;
-            }
-
-            try {
-                // calculate weight
-                switch (entry.itemType) {
-                    case Favorites.ITEM_TYPE_SHORTCUT:
-                    case Favorites.ITEM_TYPE_DEEP_SHORTCUT:
-                    case Favorites.ITEM_TYPE_APPLICATION: {
-                        verifyIntent(c.getString(indexIntent));
-                        entry.weight = entry.itemType == Favorites.ITEM_TYPE_APPLICATION ?
-                                WT_APPLICATION : WT_SHORTCUT;
-                        break;
-                    }
-                    case Favorites.ITEM_TYPE_FOLDER: {
-                        int total = getFolderItemsCount(entry.id);
-                        if (total == 0) {
-                            throw new Exception("Folder is empty");
-                        }
-                        entry.weight = WT_FOLDER_FACTOR * total;
-                        break;
-                    }
-                    default:
-                        throw new Exception("Invalid item type");
-                }
-            } catch (Exception e) {
-                if (DEBUG) {
-                    Log.d(TAG, "Removing item " + entry.id, e);
-                }
-                mEntryToRemove.add(entry.id);
-                continue;
-            }
-            entries.add(entry);
-        }
-        c.close();
-        return entries;
-    }
-
-
-    /**
-     * Loads entries for a particular screen id.
-     */
-    protected ArrayList<DbEntry> loadWorkspaceEntries(int screen) {
-        Cursor c = queryWorkspace(
-                new String[]{
-                        Favorites._ID,                  // 0
-                        Favorites.ITEM_TYPE,            // 1
-                        Favorites.CELLX,                // 2
-                        Favorites.CELLY,                // 3
-                        Favorites.SPANX,                // 4
-                        Favorites.SPANY,                // 5
-                        Favorites.INTENT,               // 6
-                        Favorites.APPWIDGET_PROVIDER,   // 7
-                        Favorites.APPWIDGET_ID},        // 8
-                Favorites.CONTAINER + " = " + Favorites.CONTAINER_DESKTOP
-                        + " AND " + Favorites.SCREEN + " = " + screen);
-
-        final int indexId = c.getColumnIndexOrThrow(Favorites._ID);
-        final int indexItemType = c.getColumnIndexOrThrow(Favorites.ITEM_TYPE);
-        final int indexCellX = c.getColumnIndexOrThrow(Favorites.CELLX);
-        final int indexCellY = c.getColumnIndexOrThrow(Favorites.CELLY);
-        final int indexSpanX = c.getColumnIndexOrThrow(Favorites.SPANX);
-        final int indexSpanY = c.getColumnIndexOrThrow(Favorites.SPANY);
-        final int indexIntent = c.getColumnIndexOrThrow(Favorites.INTENT);
-        final int indexAppWidgetProvider = c.getColumnIndexOrThrow(Favorites.APPWIDGET_PROVIDER);
-        final int indexAppWidgetId = c.getColumnIndexOrThrow(Favorites.APPWIDGET_ID);
-
-        ArrayList<DbEntry> entries = new ArrayList<>();
-        WidgetManagerHelper widgetManagerHelper = new WidgetManagerHelper(mContext);
-        while (c.moveToNext()) {
-            DbEntry entry = new DbEntry();
-            entry.id = c.getInt(indexId);
-            entry.itemType = c.getInt(indexItemType);
-            entry.cellX = c.getInt(indexCellX);
-            entry.cellY = c.getInt(indexCellY);
-            entry.spanX = c.getInt(indexSpanX);
-            entry.spanY = c.getInt(indexSpanY);
-            entry.screenId = screen;
-
-            try {
-                // calculate weight
-                switch (entry.itemType) {
-                    case Favorites.ITEM_TYPE_SHORTCUT:
-                    case Favorites.ITEM_TYPE_DEEP_SHORTCUT:
-                    case Favorites.ITEM_TYPE_APPLICATION: {
-                        verifyIntent(c.getString(indexIntent));
-                        entry.weight = entry.itemType == Favorites.ITEM_TYPE_APPLICATION ?
-                                WT_APPLICATION : WT_SHORTCUT;
-                        break;
-                    }
-                    case Favorites.ITEM_TYPE_APPWIDGET: {
-                        String provider = c.getString(indexAppWidgetProvider);
-                        ComponentName cn = ComponentName.unflattenFromString(provider);
-                        verifyPackage(cn.getPackageName());
-                        entry.weight = Math.max(WT_WIDGET_MIN, WT_WIDGET_FACTOR
-                                * entry.spanX * entry.spanY);
-
-                        int widgetId = c.getInt(indexAppWidgetId);
-                        LauncherAppWidgetProviderInfo pInfo =
-                                widgetManagerHelper.getLauncherAppWidgetInfo(widgetId);
-                        Point spans = null;
-                        if (pInfo != null) {
-                            spans = pInfo.getMinSpans();
-                        }
-                        if (spans != null) {
-                            entry.minSpanX = spans.x > 0 ? spans.x : entry.spanX;
-                            entry.minSpanY = spans.y > 0 ? spans.y : entry.spanY;
-                        } else {
-                            // Assume that the widget be resized down to 2x2
-                            entry.minSpanX = entry.minSpanY = 2;
-                        }
-
-                        if (entry.minSpanX > mTrgX || entry.minSpanY > mTrgY) {
-                            throw new Exception("Widget can't be resized down to fit the grid");
-                        }
-                        break;
-                    }
-                    case Favorites.ITEM_TYPE_FOLDER: {
-                        int total = getFolderItemsCount(entry.id);
-                        if (total == 0) {
-                            throw new Exception("Folder is empty");
-                        }
-                        entry.weight = WT_FOLDER_FACTOR * total;
-                        break;
-                    }
-                    default:
-                        throw new Exception("Invalid item type");
-                }
-            } catch (Exception e) {
-                if (DEBUG) {
-                    Log.d(TAG, "Removing item " + entry.id, e);
-                }
-                mEntryToRemove.add(entry.id);
-                continue;
-            }
-            entries.add(entry);
-        }
-        c.close();
-        return entries;
-    }
-
-    /**
-     * @return the number of valid items in the folder.
-     */
-    private int getFolderItemsCount(int folderId) {
-        Cursor c = queryWorkspace(
-                new String[]{Favorites._ID, Favorites.INTENT},
-                Favorites.CONTAINER + " = " + folderId);
-
-        int total = 0;
-        while (c.moveToNext()) {
-            try {
-                verifyIntent(c.getString(1));
-                total++;
-            } catch (Exception e) {
-                mEntryToRemove.add(c.getInt(0));
-            }
-        }
-        c.close();
-        return total;
-    }
-
-    protected Cursor queryWorkspace(String[] columns, String where) {
-        return mDb.query(mTableName, columns, where, null, null, null, null);
-    }
-
-    /**
-     * Verifies if the intent should be restored.
-     */
-    private void verifyIntent(String intentStr) throws Exception {
-        Intent intent = Intent.parseUri(intentStr, 0);
-        if (intent.getComponent() != null) {
-            verifyPackage(intent.getComponent().getPackageName());
-        } else if (intent.getPackage() != null) {
-            // Only verify package if the component was null.
-            verifyPackage(intent.getPackage());
-        }
-    }
-
-    /**
-     * Verifies if the package should be restored
-     */
-    private void verifyPackage(String packageName) throws Exception {
-        if (!mValidPackages.contains(packageName)) {
-            throw new Exception("Package not available");
-        }
-    }
-
-    protected static class DbEntry extends ItemInfo implements Comparable<DbEntry> {
-
-        public float weight;
-
-        public DbEntry() {
-        }
-
-        public DbEntry copy() {
-            DbEntry entry = new DbEntry();
-            entry.copyFrom(this);
-            entry.weight = weight;
-            entry.minSpanX = minSpanX;
-            entry.minSpanY = minSpanY;
-            return entry;
-        }
-
-        /**
-         * Comparator such that larger widgets come first,  followed by all 1x1 items
-         * based on their weights.
-         */
-        @Override
-        public int compareTo(DbEntry another) {
-            if (itemType == Favorites.ITEM_TYPE_APPWIDGET) {
-                if (another.itemType == Favorites.ITEM_TYPE_APPWIDGET) {
-                    return another.spanY * another.spanX - spanX * spanY;
-                } else {
-                    return -1;
-                }
-            } else if (another.itemType == Favorites.ITEM_TYPE_APPWIDGET) {
-                return 1;
-            } else {
-                // Place higher weight before lower weight.
-                return Float.compare(another.weight, weight);
-            }
-        }
-
-        public boolean columnsSame(DbEntry org) {
-            return org.cellX == cellX && org.cellY == cellY && org.spanX == spanX &&
-                    org.spanY == spanY && org.screenId == screenId;
-        }
-
-        public void addToContentValues(ContentValues values) {
-            values.put(Favorites.SCREEN, screenId);
-            values.put(Favorites.CELLX, cellX);
-            values.put(Favorites.CELLY, cellY);
-            values.put(Favorites.SPANX, spanX);
-            values.put(Favorites.SPANY, spanY);
-        }
-    }
-
-    private static ArrayList<DbEntry> deepCopy(ArrayList<DbEntry> src) {
-        ArrayList<DbEntry> dup = new ArrayList<>(src.size());
-        for (DbEntry e : src) {
-            dup.add(e.copy());
-        }
-        return dup;
-    }
-
-    public static void markForMigration(
-            Context context, int gridX, int gridY, int hotseatSize) {
-        Utilities.getPrefs(context).edit()
-                .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, getPointString(gridX, gridY))
-                .putInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, hotseatSize)
-                .apply();
-    }
-
-    /**
-     * Check given a new IDP, if migration is necessary.
-     */
-    public static boolean needsToMigrate(Context context, InvariantDeviceProfile idp) {
-        SharedPreferences prefs = Utilities.getPrefs(context);
-        String gridSizeString = getPointString(idp.numColumns, idp.numRows);
-
-        return !gridSizeString.equals(prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, ""))
-                || idp.numDatabaseHotseatIcons != prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, -1);
-    }
-
-    /** See {@link #migrateGridIfNeeded(Context, InvariantDeviceProfile)} */
-    public static boolean migrateGridIfNeeded(Context context) {
-        if (context instanceof LauncherPreviewRenderer.PreviewContext) {
-            return true;
-        }
-        return migrateGridIfNeeded(context, null);
-    }
-
-    /**
-     * Run the migration algorithm if needed. For preview, we provide the intended idp because it
-     * has not been changed. If idp is null, we read it from the context, for actual grid migration.
-     *
-     * @return false if the migration failed.
-     */
-    public static boolean migrateGridIfNeeded(Context context, InvariantDeviceProfile idp) {
-        boolean migrateForPreview = idp != null;
-        if (!migrateForPreview) {
-            idp = LauncherAppState.getIDP(context);
-        }
-
-        if (!needsToMigrate(context, idp)) {
-            return true;
-        }
-
-        SharedPreferences prefs = Utilities.getPrefs(context);
-        String gridSizeString = getPointString(idp.numColumns, idp.numRows);
-        long migrationStartTime = SystemClock.elapsedRealtime();
-        try (SQLiteTransaction transaction = (SQLiteTransaction) Settings.call(
-                context.getContentResolver(), Settings.METHOD_NEW_TRANSACTION)
-                .getBinder(Settings.EXTRA_VALUE)) {
-
-            int srcHotseatCount = prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT,
-                    idp.numDatabaseHotseatIcons);
-            Point sourceSize = parsePoint(prefs.getString(
-                    KEY_MIGRATION_SRC_WORKSPACE_SIZE, gridSizeString));
-
-            boolean dbChanged = false;
-            if (migrateForPreview) {
-                copyTable(transaction.getDb(), Favorites.TABLE_NAME, transaction.getDb(),
-                        Favorites.PREVIEW_TABLE_NAME, context);
-            }
-
-            GridBackupTable backupTable = new GridBackupTable(context, transaction.getDb(),
-                    srcHotseatCount, sourceSize.x, sourceSize.y);
-            if (migrateForPreview ? backupTable.restoreToPreviewIfBackupExists()
-                    : backupTable.backupOrRestoreAsNeeded()) {
-                dbChanged = true;
-                srcHotseatCount = backupTable.getRestoreHotseatAndGridSize(sourceSize);
-            }
-
-            HashSet<String> validPackages = getValidPackages(context);
-            // Hotseat.
-            if (srcHotseatCount != idp.numDatabaseHotseatIcons
-                    && new GridSizeMigrationTask(context, transaction.getDb(), validPackages,
-                            migrateForPreview, srcHotseatCount,
-                            idp.numDatabaseHotseatIcons).migrateHotseat()) {
-                dbChanged = true;
-            }
-
-            // Grid size
-            Point targetSize = new Point(idp.numColumns, idp.numRows);
-            if (new MultiStepMigrationTask(validPackages, context, transaction.getDb(),
-                    migrateForPreview).migrate(sourceSize, targetSize)) {
-                dbChanged = true;
-            }
-
-            if (dbChanged) {
-                // Make sure we haven't removed everything.
-                final Cursor c = context.getContentResolver().query(
-                        migrateForPreview ? Favorites.PREVIEW_CONTENT_URI : Favorites.CONTENT_URI,
-                        null, null, null, null);
-                boolean hasData = c.moveToNext();
-                c.close();
-                if (!hasData) {
-                    throw new Exception("Removed every thing during grid resize");
-                }
-            }
-
-            transaction.commit();
-            if (!migrateForPreview) {
-                Settings.call(context.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
-            }
-            return true;
-        } catch (Exception e) {
-            Log.e(TAG, "Error during preview grid migration", e);
-
-            return false;
-        } finally {
-            Log.v(TAG, "Preview workspace migration completed in "
-                    + (SystemClock.elapsedRealtime() - migrationStartTime));
-
-            if (!migrateForPreview) {
-                // Save current configuration, so that the migration does not run again.
-                prefs.edit()
-                        .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, gridSizeString)
-                        .putInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, idp.numDatabaseHotseatIcons)
-                        .apply();
-            }
-        }
-    }
-
-    protected static HashSet<String> getValidPackages(Context context) {
-        // Initialize list of valid packages. This contain all the packages which are already on
-        // the device and packages which are being installed. Any item which doesn't belong to
-        // this set is removed.
-        // Since the loader removes such items anyway, removing these items here doesn't cause
-        // any extra data loss and gives us more free space on the grid for better migration.
-        HashSet<String> validPackages = new HashSet<>();
-        for (PackageInfo info : context.getPackageManager()
-                .getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES)) {
-            validPackages.add(info.packageName);
-        }
-        InstallSessionHelper.INSTANCE.get(context)
-                .getActiveSessions().keySet()
-                .forEach(packageUserKey -> validPackages.add(packageUserKey.mPackageName));
-        return validPackages;
-    }
-
-    /**
-     * Removes any broken item from the hotseat.
-     *
-     * @return a map with occupied hotseat position set to non-null value.
-     */
-    public static IntSparseArrayMap<Object> removeBrokenHotseatItems(Context context)
-            throws Exception {
-        try (SQLiteTransaction transaction = (SQLiteTransaction) Settings.call(
-                context.getContentResolver(), Settings.METHOD_NEW_TRANSACTION)
-                .getBinder(Settings.EXTRA_VALUE)) {
-            GridSizeMigrationTask task = new GridSizeMigrationTask(
-                    context, transaction.getDb(), getValidPackages(context),
-                    false /* usePreviewTable */, Integer.MAX_VALUE, Integer.MAX_VALUE);
-
-            // Load all the valid entries
-            ArrayList<DbEntry> items = task.loadHotseatEntries();
-            // Delete any entry marked for deletion by above load.
-            task.applyOperations();
-            IntSparseArrayMap<Object> positions = new IntSparseArrayMap<>();
-            for (DbEntry item : items) {
-                positions.put(item.screenId, item);
-            }
-            transaction.commit();
-            return positions;
-        }
-    }
-
-    /**
-     * Task to run grid migration in multiple steps when the size difference is more than 1.
-     */
-    protected static class MultiStepMigrationTask {
-        private final HashSet<String> mValidPackages;
-        private final Context mContext;
-        private final SQLiteDatabase mDb;
-        private final boolean mUsePreviewTable;
-
-        public MultiStepMigrationTask(HashSet<String> validPackages, Context context,
-                SQLiteDatabase db, boolean usePreviewTable) {
-            mValidPackages = validPackages;
-            mContext = context;
-            mDb = db;
-            mUsePreviewTable = usePreviewTable;
-        }
-
-        public boolean migrate(Point sourceSize, Point targetSize) throws Exception {
-            boolean dbChanged = false;
-            if (!targetSize.equals(sourceSize)) {
-                if (sourceSize.x < targetSize.x) {
-                    // Source is smaller that target, just expand the grid without actual migration.
-                    sourceSize.x = targetSize.x;
-                }
-                if (sourceSize.y < targetSize.y) {
-                    // Source is smaller that target, just expand the grid without actual migration.
-                    sourceSize.y = targetSize.y;
-                }
-
-                // Migrate the workspace grid, such that the points differ by max 1 in x and y
-                // each on every step.
-                while (!targetSize.equals(sourceSize)) {
-                    // Get the next size, such that the points differ by max 1 in x and y each
-                    Point nextSize = new Point(sourceSize);
-                    if (targetSize.x < nextSize.x) {
-                        nextSize.x--;
-                    }
-                    if (targetSize.y < nextSize.y) {
-                        nextSize.y--;
-                    }
-                    if (runStepTask(sourceSize, nextSize)) {
-                        dbChanged = true;
-                    }
-                    sourceSize.set(nextSize.x, nextSize.y);
-                }
-            }
-            return dbChanged;
-        }
-
-        protected boolean runStepTask(Point sourceSize, Point nextSize) throws Exception {
-            return new GridSizeMigrationTask(mContext, mDb, mValidPackages, mUsePreviewTable,
-                    sourceSize, nextSize).migrateWorkspace();
-        }
-    }
-}
diff --git a/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java b/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java
index 8a1d73e..e7d0749 100644
--- a/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java
+++ b/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java
@@ -16,9 +16,6 @@
 
 package com.android.launcher3.model;
 
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_HOTSEAT_COUNT;
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_WORKSPACE_SIZE;
-import static com.android.launcher3.Utilities.getPointString;
 import static com.android.launcher3.provider.LauncherDbUtils.dropTable;
 
 import android.content.ComponentName;
@@ -106,11 +103,7 @@
      * Check given a new IDP, if migration is necessary.
      */
     public static boolean needsToMigrate(Context context, InvariantDeviceProfile idp) {
-        SharedPreferences prefs = Utilities.getPrefs(context);
-        String gridSizeString = getPointString(idp.numColumns, idp.numRows);
-
-        return !gridSizeString.equals(prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, ""))
-                || idp.numDatabaseHotseatIcons != prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, -1);
+        return !new DeviceGridState(idp).equals(new DeviceGridState(context));
     }
 
     /** See {@link #migrateGridIfNeeded(Context, InvariantDeviceProfile)} */
@@ -123,15 +116,15 @@
 
     /**
      * When migrating the grid for preview, we copy the table
-     * {@link LauncherSettings.Favorites.TABLE_NAME} into
-     * {@link LauncherSettings.Favorites.PREVIEW_TABLE_NAME}, run grid size migration from the
+     * {@link LauncherSettings.Favorites#TABLE_NAME} into
+     * {@link LauncherSettings.Favorites#PREVIEW_TABLE_NAME}, run grid size migration from the
      * former to the later, then use the later table for preview.
      *
      * Similarly when doing the actual grid migration, the former grid option's table
-     * {@link LauncherSettings.Favorites.TABLE_NAME} is copied into the new grid option's
-     * {@link LauncherSettings.Favorites.TMP_TABLE}, we then run the grid size migration algorithm
+     * {@link LauncherSettings.Favorites#TABLE_NAME} is copied into the new grid option's
+     * {@link LauncherSettings.Favorites#TMP_TABLE}, we then run the grid size migration algorithm
      * to migrate the later to the former, and load the workspace from the default
-     * {@link LauncherSettings.Favorites.TABLE_NAME}.
+     * {@link LauncherSettings.Favorites#TABLE_NAME}.
      *
      * @return false if the migration failed.
      */
@@ -146,10 +139,7 @@
         }
 
         SharedPreferences prefs = Utilities.getPrefs(context);
-        String gridSizeString = getPointString(idp.numColumns, idp.numRows);
         HashSet<String> validPackages = getValidPackages(context);
-        int srcHotseatCount = prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT,
-                idp.numDatabaseHotseatIcons);
 
         if (migrateForPreview) {
             if (!LauncherSettings.Settings.call(
@@ -174,16 +164,16 @@
             DbReader srcReader = new DbReader(t.getDb(),
                     migrateForPreview ? LauncherSettings.Favorites.TABLE_NAME
                             : LauncherSettings.Favorites.TMP_TABLE,
-                    context, validPackages, srcHotseatCount);
+                    context, validPackages);
             DbReader destReader = new DbReader(t.getDb(),
                     migrateForPreview ? LauncherSettings.Favorites.PREVIEW_TABLE_NAME
                             : LauncherSettings.Favorites.TABLE_NAME,
-                    context, validPackages, idp.numDatabaseHotseatIcons);
+                    context, validPackages);
 
             Point targetSize = new Point(idp.numColumns, idp.numRows);
             GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(context, t.getDb(),
                     srcReader, destReader, idp.numDatabaseHotseatIcons, targetSize);
-            task.migrate();
+            task.migrate(idp);
 
             if (!migrateForPreview) {
                 dropTable(t.getDb(), LauncherSettings.Favorites.TMP_TABLE);
@@ -201,16 +191,13 @@
 
             if (!migrateForPreview) {
                 // Save current configuration, so that the migration does not run again.
-                prefs.edit()
-                        .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, gridSizeString)
-                        .putInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, idp.numDatabaseHotseatIcons)
-                        .apply();
+                new DeviceGridState(idp).writeToPrefs(context);
             }
         }
     }
 
     @VisibleForTesting
-    protected boolean migrate() {
+    protected boolean migrate(InvariantDeviceProfile idp) {
         if (mHotseatDiff.isEmpty() && mWorkspaceDiff.isEmpty()) {
             return false;
         }
@@ -224,7 +211,14 @@
         Collections.sort(mWorkspaceDiff);
 
         // Migrate workspace.
+        // First we create a collection of the screens
+        List<Integer> screens = new ArrayList<>();
         for (int screenId = 0; screenId <= mDestReader.mLastScreenId; screenId++) {
+            screens.add(screenId);
+        }
+
+        // Then we place the items on the screens
+        for (int screenId : screens) {
             if (DEBUG) {
                 Log.d(TAG, "Migrating " + screenId);
             }
@@ -236,6 +230,8 @@
             }
         }
 
+        // In case the new grid is smaller, there might be some leftover items that don't fit on
+        // any of the screens, in this case we add them to new screens until all of them are placed.
         int screenId = mDestReader.mLastScreenId + 1;
         while (!mWorkspaceDiff.isEmpty()) {
             GridPlacementSolution workspaceSolution = new GridPlacementSolution(mDb, mSrcReader,
@@ -491,7 +487,6 @@
         private final String mTableName;
         private final Context mContext;
         private final HashSet<String> mValidPackages;
-        private final int mHotseatSize;
         private int mLastScreenId = -1;
 
         private final ArrayList<DbEntry> mHotseatEntries = new ArrayList<>();
@@ -500,12 +495,11 @@
                 new ArrayMap<>();
 
         DbReader(SQLiteDatabase db, String tableName, Context context,
-                HashSet<String> validPackages, int hotseatSize) {
+                HashSet<String> validPackages) {
             mDb = db;
             mTableName = tableName;
             mContext = context;
             mValidPackages = validPackages;
-            mHotseatSize = hotseatSize;
         }
 
         protected ArrayList<DbEntry> loadHotseatEntries() {
@@ -530,11 +524,6 @@
                 entry.itemType = c.getInt(indexItemType);
                 entry.screenId = c.getInt(indexScreen);
 
-                if (entry.screenId >= mHotseatSize) {
-                    entriesToRemove.add(entry.id);
-                    continue;
-                }
-
                 try {
                     // calculate weight
                     switch (entry.itemType) {
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index f6b0b4d..f4a0eb8 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -16,7 +16,6 @@
 
 package com.android.launcher3.model;
 
-import static com.android.launcher3.config.FeatureFlags.MULTI_DB_GRID_MIRATION_ALGO;
 import static com.android.launcher3.model.BgDataModel.Callbacks.FLAG_HAS_SHORTCUT_PERMISSION;
 import static com.android.launcher3.model.BgDataModel.Callbacks.FLAG_QUIET_MODE_CHANGE_PERMISSION;
 import static com.android.launcher3.model.BgDataModel.Callbacks.FLAG_QUIET_MODE_ENABLED;
@@ -79,13 +78,14 @@
 import com.android.launcher3.pm.InstallSessionHelper;
 import com.android.launcher3.pm.PackageInstallInfo;
 import com.android.launcher3.pm.UserCache;
-import com.android.launcher3.provider.ImportDataTask;
 import com.android.launcher3.qsb.QsbContainerView;
 import com.android.launcher3.shortcuts.ShortcutKey;
 import com.android.launcher3.shortcuts.ShortcutRequest;
 import com.android.launcher3.shortcuts.ShortcutRequest.QueryResult;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.IOUtils;
+import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.LooperIdleLock;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.PackageUserKey;
@@ -174,10 +174,13 @@
     private void sendFirstScreenActiveInstallsBroadcast() {
         ArrayList<ItemInfo> firstScreenItems = new ArrayList<>();
         ArrayList<ItemInfo> allItems = mBgDataModel.getAllWorkspaceItems();
-        // Screen set is never empty
-        final int firstScreen = mBgDataModel.collectWorkspaceScreens().get(0);
 
-        filterCurrentWorkspaceItems(firstScreen, allItems, firstScreenItems,
+        // Screen set is never empty
+        IntArray allScreens = mBgDataModel.collectWorkspaceScreens();
+        final int firstScreen = allScreens.get(0);
+        IntSet firstScreens = IntSet.wrap(firstScreen);
+
+        filterCurrentWorkspaceItems(firstScreens, allItems, firstScreenItems,
                 new ArrayList<>() /* otherScreenItems are ignored */);
         mFirstScreenBroadcast.sendBroadcasts(mApp.getContext(), firstScreenItems);
     }
@@ -208,7 +211,7 @@
             }
 
             verifyNotStopped();
-            mResults.bindWorkspace();
+            mResults.bindWorkspace(true /* incrementBindId */);
             logASplit(logger, "bindWorkspace");
 
             mModelDelegate.workspaceLoadComplete();
@@ -324,16 +327,7 @@
         final WidgetManagerHelper widgetHelper = new WidgetManagerHelper(context);
 
         boolean clearDb = false;
-        try {
-            ImportDataTask.performImportIfPossible(context);
-        } catch (Exception e) {
-            // Migration failed. Clear workspace.
-            clearDb = true;
-        }
-
-        if (!clearDb && (MULTI_DB_GRID_MIRATION_ALGO.get()
-                ? !GridSizeMigrationTaskV2.migrateGridIfNeeded(context)
-                : !GridSizeMigrationTask.migrateGridIfNeeded(context))) {
+        if (!GridSizeMigrationTaskV2.migrateGridIfNeeded(context)) {
             // Migration failed. Clear workspace.
             clearDb = true;
         }
diff --git a/src/com/android/launcher3/model/ModelUtils.java b/src/com/android/launcher3/model/ModelUtils.java
index 9b5fac8..58aa9e5 100644
--- a/src/com/android/launcher3/model/ModelUtils.java
+++ b/src/com/android/launcher3/model/ModelUtils.java
@@ -51,7 +51,8 @@
      * Filters the set of items who are directly or indirectly (via another container) on the
      * specified screen.
      */
-    public static <T extends ItemInfo> void filterCurrentWorkspaceItems(int currentScreenId,
+    public static <T extends ItemInfo> void filterCurrentWorkspaceItems(
+            IntSet currentScreenIds,
             ArrayList<T> allWorkspaceItems,
             ArrayList<T> currentScreenItems,
             ArrayList<T> otherScreenItems) {
@@ -65,7 +66,7 @@
                 (lhs, rhs) -> Integer.compare(lhs.container, rhs.container));
         for (T info : allWorkspaceItems) {
             if (info.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
-                if (info.screenId == currentScreenId) {
+                if (currentScreenIds.contains(info.screenId)) {
                     currentScreenItems.add(info);
                     itemsOnScreen.add(info.id);
                 } else {
diff --git a/src/com/android/launcher3/model/ModelWriter.java b/src/com/android/launcher3/model/ModelWriter.java
index 080ce20..0439e75 100644
--- a/src/com/android/launcher3/model/ModelWriter.java
+++ b/src/com/android/launcher3/model/ModelWriter.java
@@ -23,12 +23,13 @@
 import android.content.ContentValues;
 import android.content.Context;
 import android.net.Uri;
-import android.os.Handler;
-import android.os.Looper;
 import android.util.Log;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel;
+import com.android.launcher3.LauncherModel.CallbackTask;
 import com.android.launcher3.LauncherProvider;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.LauncherSettings.Favorites;
@@ -36,19 +37,22 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.FileLog;
+import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.model.data.FolderInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.util.ContentWriter;
+import com.android.launcher3.util.Executors;
 import com.android.launcher3.util.ItemInfoMatcher;
+import com.android.launcher3.util.LooperExecutor;
 import com.android.launcher3.widget.LauncherAppWidgetHost;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
-import java.util.concurrent.Executor;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
@@ -63,7 +67,10 @@
     private final Context mContext;
     private final LauncherModel mModel;
     private final BgDataModel mBgDataModel;
-    private final Handler mUiHandler;
+    private final LooperExecutor mUiExecutor;
+
+    @Nullable
+    private final Callbacks mOwner;
 
     private final boolean mHasVerticalHotseat;
     private final boolean mVerifyChanges;
@@ -73,13 +80,15 @@
     private boolean mPreparingToUndo;
 
     public ModelWriter(Context context, LauncherModel model, BgDataModel dataModel,
-            boolean hasVerticalHotseat, boolean verifyChanges) {
+            boolean hasVerticalHotseat, boolean verifyChanges,
+            @Nullable Callbacks owner) {
         mContext = context;
         mModel = model;
         mBgDataModel = dataModel;
         mHasVerticalHotseat = hasVerticalHotseat;
         mVerifyChanges = verifyChanges;
-        mUiHandler = new Handler(Looper.getMainLooper());
+        mOwner = owner;
+        mUiExecutor = Executors.MAIN_EXECUTOR;
     }
 
     private void updateItemInfoProps(
@@ -155,6 +164,8 @@
     public void moveItemInDatabase(final ItemInfo item,
             int container, int screenId, int cellX, int cellY) {
         updateItemInfoProps(item, container, screenId, cellX, cellY);
+        notifyItemModified(item);
+
         enqueueDeleteRunnable(new UpdateItemRunnable(item, () ->
                 new ContentWriter(mContext)
                         .put(Favorites.CONTAINER, item.container)
@@ -171,6 +182,7 @@
     public void moveItemsInDatabase(final ArrayList<ItemInfo> items, int container, int screen) {
         ArrayList<ContentValues> contentValues = new ArrayList<>();
         int count = items.size();
+        notifyOtherCallbacks(c -> c.bindItemsModified(items));
 
         for (int i = 0; i < count; i++) {
             ItemInfo item = items.get(i);
@@ -196,8 +208,9 @@
         updateItemInfoProps(item, container, screenId, cellX, cellY);
         item.spanX = spanX;
         item.spanY = spanY;
+        notifyItemModified(item);
 
-        ((Executor) MODEL_EXECUTOR).execute(new UpdateItemRunnable(item, () ->
+        MODEL_EXECUTOR.execute(new UpdateItemRunnable(item, () ->
                 new ContentWriter(mContext)
                         .put(Favorites.CONTAINER, item.container)
                         .put(Favorites.CELLX, item.cellX)
@@ -212,13 +225,18 @@
      * Update an item to the database in a specified container.
      */
     public void updateItemInDatabase(ItemInfo item) {
-        ((Executor) MODEL_EXECUTOR).execute(new UpdateItemRunnable(item, () -> {
+        notifyItemModified(item);
+        MODEL_EXECUTOR.execute(new UpdateItemRunnable(item, () -> {
             ContentWriter writer = new ContentWriter(mContext);
             item.onAddToDatabase(writer);
             return writer;
         }));
     }
 
+    private void notifyItemModified(ItemInfo item) {
+        notifyOtherCallbacks(c -> c.bindItemsModified(Collections.singletonList(item)));
+    }
+
     /**
      * Add an item to the database in a specified container. Sets the container, screen, cellX and
      * cellY fields of the item. Also assigns an ID to the item.
@@ -229,10 +247,11 @@
 
         final ContentResolver cr = mContext.getContentResolver();
         item.id = Settings.call(cr, Settings.METHOD_NEW_ITEM_ID).getInt(Settings.EXTRA_VALUE);
+        notifyOtherCallbacks(c -> c.bindItems(Collections.singletonList(item), false));
 
         ModelVerifier verifier = new ModelVerifier();
         final StackTraceElement[] stackTrace = new Throwable().getStackTrace();
-        ((Executor) MODEL_EXECUTOR).execute(() -> {
+        MODEL_EXECUTOR.execute(() -> {
             // Write the item on background thread, as some properties might have been updated in
             // the background.
             final ContentWriter writer = new ContentWriter(mContext);
@@ -274,6 +293,7 @@
                 (item) -> item.getTargetComponent() == null ? ""
                         : item.getTargetComponent().getPackageName()).collect(
                 Collectors.joining(",")), new Exception());
+        notifyDelete(items);
         enqueueDeleteRunnable(() -> {
             for (ItemInfo item : items) {
                 final Uri uri = Favorites.getContentUri(item.id);
@@ -290,6 +310,7 @@
      */
     public void deleteFolderAndContentsFromDatabase(final FolderInfo info) {
         ModelVerifier verifier = new ModelVerifier();
+        notifyDelete(Collections.singleton(info));
 
         enqueueDeleteRunnable(() -> {
             ContentResolver cr = mContext.getContentResolver();
@@ -308,6 +329,7 @@
      * Deletes the widget info and the widget id.
      */
     public void deleteWidgetInfo(final LauncherAppWidgetInfo info, LauncherAppWidgetHost host) {
+        notifyDelete(Collections.singleton(info));
         if (host != null && !info.isCustomWidget() && info.isWidgetIdAllocated()) {
             // Deleting an app widget ID is a void call but writes to disk before returning
             // to the caller...
@@ -316,6 +338,10 @@
         deleteItemFromDatabase(info);
     }
 
+    private void notifyDelete(Collection<? extends ItemInfo> items) {
+        notifyOtherCallbacks(c -> c.bindWorkspaceComponentsRemoved(ItemInfoMatcher.ofItems(items)));
+    }
+
     /**
      * Delete operations tracked using {@link #enqueueDeleteRunnable} will only be called
      * if {@link #commitDelete} is called. Note that one of {@link #commitDelete()} or
@@ -341,14 +367,14 @@
         if (mPreparingToUndo) {
             mDeleteRunnables.add(r);
         } else {
-            ((Executor) MODEL_EXECUTOR).execute(r);
+            MODEL_EXECUTOR.execute(r);
         }
     }
 
     public void commitDelete() {
         mPreparingToUndo = false;
         for (Runnable runnable : mDeleteRunnables) {
-            ((Executor) MODEL_EXECUTOR).execute(runnable);
+            MODEL_EXECUTOR.execute(runnable);
         }
         mDeleteRunnables.clear();
     }
@@ -364,6 +390,20 @@
         mModel.forceReload();
     }
 
+    private void notifyOtherCallbacks(CallbackTask task) {
+        if (mOwner == null) {
+            // If the call is happening from a model, it will take care of updating the callbacks
+            return;
+        }
+        mUiExecutor.execute(() -> {
+            for (Callbacks c : mModel.getCallbacks()) {
+                if (c != mOwner) {
+                    task.execute(c);
+                }
+            }
+        });
+    }
+
     private class UpdateItemRunnable extends UpdateItemBaseRunnable {
         private final ItemInfo mItem;
         private final Supplier<ContentWriter> mWriter;
@@ -484,7 +524,7 @@
 
             int executeId = mBgDataModel.lastBindId;
 
-            mUiHandler.post(() -> {
+            mUiExecutor.post(() -> {
                 int currentId = mBgDataModel.lastBindId;
                 if (currentId > executeId) {
                     // Model was already bound after job was executed.
diff --git a/src/com/android/launcher3/model/PackageUpdatedTask.java b/src/com/android/launcher3/model/PackageUpdatedTask.java
index 82b0f7c..83fb3d1 100644
--- a/src/com/android/launcher3/model/PackageUpdatedTask.java
+++ b/src/com/android/launcher3/model/PackageUpdatedTask.java
@@ -123,7 +123,6 @@
                         iconCache.updateIconsForPkg(packages[i], mUser);
                         activitiesLists.put(
                                 packages[i], appsList.updatePackage(context, packages[i], mUser));
-                        app.getWidgetCache().removePackage(packages[i], mUser);
 
                         // The update may have changed which shortcuts/widgets are available.
                         // Refresh the widgets for the package if we have an activity running.
@@ -148,7 +147,6 @@
                 for (int i = 0; i < N; i++) {
                     if (DEBUG) Log.d(TAG, "mAllAppsList.removePackage " + packages[i]);
                     appsList.removePackage(packages[i], mUser);
-                    app.getWidgetCache().removePackage(packages[i], mUser);
                 }
                 flagOp = FlagOp.addFlag(WorkspaceItemInfo.FLAG_DISABLED_NOT_AVAILABLE);
                 break;
diff --git a/src/com/android/launcher3/pageindicators/PageIndicatorDots.java b/src/com/android/launcher3/pageindicators/PageIndicatorDots.java
index f7c730a..29eefe2 100644
--- a/src/com/android/launcher3/pageindicators/PageIndicatorDots.java
+++ b/src/com/android/launcher3/pageindicators/PageIndicatorDots.java
@@ -53,6 +53,9 @@
     private static final int ENTER_ANIMATION_STAGGERED_DELAY = 150;
     private static final int ENTER_ANIMATION_DURATION = 400;
 
+    private static final int DOT_ACTIVE_ALPHA = 255;
+    private static final int DOT_INACTIVE_ALPHA = 128;
+
     // This value approximately overshoots to 1.5 times the original size.
     private static final float ENTER_ANIMATION_OVERSHOOT_TENSION = 4.9f;
 
@@ -75,8 +78,6 @@
 
     private final Paint mCirclePaint;
     private final float mDotRadius;
-    private final int mActiveColor;
-    private final int mInActiveColor;
     private final boolean mIsRtl;
 
     private int mNumPages;
@@ -110,12 +111,10 @@
 
         mCirclePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
         mCirclePaint.setStyle(Style.FILL);
+        mCirclePaint.setColor(Themes.getAttrColor(context, R.attr.folderPaginationColor));
         mDotRadius = getResources().getDimension(R.dimen.page_indicator_dot_size) / 2;
         setOutlineProvider(new MyOutlineProver());
 
-        mActiveColor = Themes.getColorAccent(context);
-        mInActiveColor = Themes.getAttrColor(context, android.R.attr.colorControlHighlight);
-
         mIsRtl = Utilities.isRtl(getResources());
     }
 
@@ -253,18 +252,18 @@
                 circleGap = -circleGap;
             }
             for (int i = 0; i < mEntryAnimationRadiusFactors.length; i++) {
-                mCirclePaint.setColor(i == mActivePage ? mActiveColor : mInActiveColor);
+                mCirclePaint.setAlpha(i == mActivePage ? DOT_ACTIVE_ALPHA : DOT_INACTIVE_ALPHA);
                 canvas.drawCircle(x, y, mDotRadius * mEntryAnimationRadiusFactors[i], mCirclePaint);
                 x += circleGap;
             }
         } else {
-            mCirclePaint.setColor(mInActiveColor);
+            mCirclePaint.setAlpha(DOT_INACTIVE_ALPHA);
             for (int i = 0; i < mNumPages; i++) {
                 canvas.drawCircle(x, y, mDotRadius, mCirclePaint);
                 x += circleGap;
             }
 
-            mCirclePaint.setColor(mActiveColor);
+            mCirclePaint.setAlpha(DOT_ACTIVE_ALPHA);
             canvas.drawRoundRect(getActiveRect(), mDotRadius, mDotRadius, mCirclePaint);
         }
     }
diff --git a/src/com/android/launcher3/popup/ArrowPopup.java b/src/com/android/launcher3/popup/ArrowPopup.java
index a534ee3..3bb49f5 100644
--- a/src/com/android/launcher3/popup/ArrowPopup.java
+++ b/src/com/android/launcher3/popup/ArrowPopup.java
@@ -33,7 +33,6 @@
 import android.content.res.Resources;
 import android.graphics.Color;
 import android.graphics.Rect;
-import android.graphics.RectF;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.GradientDrawable;
@@ -50,7 +49,6 @@
 import android.widget.FrameLayout;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.BaseDraggingActivity;
@@ -69,7 +67,6 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.List;
 
 /**
@@ -126,11 +123,8 @@
     private Runnable mOnCloseCallback = () -> { };
 
     // The rect string of the view that the arrow is attached to, in screen reference frame.
-    protected String mArrowColorRectString;
     private int mArrowColor;
-    protected final HashMap<String, View> mViewForRect = new HashMap<>();
-
-    @Nullable protected LocalColorExtractor mColorExtractor;
+    protected final List<LocalColorExtractor> mColorExtractors;
 
     private final float mElevation;
     private final int mBackgroundColor;
@@ -178,7 +172,9 @@
         boolean isAboveAnotherSurface = getTopOpenViewWithType(mLauncher, TYPE_FOLDER) != null
                 || mLauncher.getStateManager().getState() == LauncherState.ALL_APPS;
         if (!isAboveAnotherSurface && Utilities.ATLEAST_S && ENABLE_LOCAL_COLOR_POPUPS.get()) {
-            setupColorExtraction();
+            mColorExtractors = new ArrayList<>();
+        } else {
+            mColorExtractors = null;
         }
 
         if (isAboveAnotherSurface) {
@@ -323,37 +319,6 @@
         return colors.get(index, mBackgroundColor);
     }
 
-    @TargetApi(Build.VERSION_CODES.S)
-    private void setupColorExtraction() {
-        Workspace workspace = mLauncher.findViewById(R.id.workspace);
-        if (workspace == null) {
-            return;
-        }
-
-        mColorExtractor = LocalColorExtractor.newInstance(mLauncher);
-        mColorExtractor.setListener((rect, extractedColors) -> {
-            String rectString = rect.toShortString();
-            View v = mViewForRect.get(rectString);
-            AnimatorSet colors = new AnimatorSet();
-            if (v != null) {
-                int newColor = getExtractedColor(extractedColors);
-                setChildColor(v, newColor, colors);
-                int numChildren = v instanceof ViewGroup ? ((ViewGroup) v).getChildCount() : 0;
-                for (int i = 0; i < numChildren; ++i) {
-                    View childView = ((ViewGroup) v).getChildAt(i);
-                    setChildColor(childView, newColor, colors);
-
-                }
-                if (rectString.equals(mArrowColorRectString)) {
-                    mArrowColor = newColor;
-                    updateArrowColor();
-                }
-            }
-            colors.setDuration(150);
-            v.post(colors::start);
-        });
-    }
-
     protected void addPreDrawForColorExtraction(Launcher launcher) {
         getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
             @Override
@@ -374,40 +339,55 @@
     }
 
     private void initColorExtractionLocations(Launcher launcher) {
-        if (mColorExtractor == null) {
+        if (mColorExtractors == null) {
             return;
         }
-        ArrayList<RectF> locations = new ArrayList<>();
+        Workspace workspace = launcher.getWorkspace();
+        if (workspace == null) {
+            return;
+        }
 
         boolean firstVisibleChild = true;
+        int screenId = workspace.getScreenIdForPageIndex(workspace.getCurrentPage());
+        DragLayer dragLayer = launcher.getDragLayer();
+
+        final View[] viewAlignedWithArrow = new View[1];
+
         // Order matters here, since we need the arrow to match the color of its adjacent view.
-        for (View view : getChildrenForColorExtraction()) {
+        for (final View view : getChildrenForColorExtraction()) {
             if (view != null && view.getVisibility() == VISIBLE) {
-                RectF rf = new RectF();
-                mColorExtractor.getExtractedRectForView(launcher,
-                        launcher.getWorkspace().getCurrentPage(), view, rf);
-                if (!rf.isEmpty()) {
-                    locations.add(rf);
-                    String rectString = rf.toShortString();
-                    mViewForRect.put(rectString, view);
-                    if (mIsAboveIcon) {
-                        mArrowColorRectString = rectString;
-                    } else {
-                        if (firstVisibleChild) {
-                            mArrowColorRectString = rectString;
+                Rect pos = new Rect();
+                dragLayer.getDescendantRectRelativeToSelf(view, pos);
+                if (!pos.isEmpty()) {
+                    LocalColorExtractor extractor = LocalColorExtractor.newInstance(launcher);
+                    extractor.setWorkspaceLocation(pos, dragLayer, screenId);
+                    extractor.setListener(extractedColors -> {
+                        AnimatorSet colors = new AnimatorSet();
+                        int newColor = getExtractedColor(extractedColors);
+                        setChildColor(view, newColor, colors);
+                        int numChildren = view instanceof ViewGroup
+                                ? ((ViewGroup) view).getChildCount() : 0;
+                        for (int i = 0; i < numChildren; ++i) {
+                            View childView = ((ViewGroup) view).getChildAt(i);
+                            setChildColor(childView, newColor, colors);
                         }
-                    }
+                        if (viewAlignedWithArrow[0] == view) {
+                            mArrowColor = newColor;
+                            updateArrowColor();
+                        }
+                        colors.setDuration(150);
+                        view.post(colors::start);
+                    });
+                    mColorExtractors.add(extractor);
 
-                    if (firstVisibleChild) {
-                        firstVisibleChild = false;
+                    if (mIsAboveIcon || firstVisibleChild) {
+                        viewAlignedWithArrow[0] = view;
                     }
-
+                    firstVisibleChild = false;
                 }
             }
         }
-        if (!locations.isEmpty()) {
-            mColorExtractor.addLocation(locations);
-        }
+
     }
 
     /**
@@ -807,11 +787,8 @@
         getPopupContainer().removeView(this);
         getPopupContainer().removeView(mArrow);
         mOnCloseCallback.run();
-        mArrowColorRectString = null;
-        mViewForRect.clear();
-        if (mColorExtractor != null) {
-            mColorExtractor.removeLocations();
-            mColorExtractor.setListener(null);
+        if (mColorExtractors != null) {
+            mColorExtractors.forEach(e -> e.setListener(null));
         }
     }
 
diff --git a/src/com/android/launcher3/popup/SystemShortcut.java b/src/com/android/launcher3/popup/SystemShortcut.java
index d3f4909..e5424cf 100644
--- a/src/com/android/launcher3/popup/SystemShortcut.java
+++ b/src/com/android/launcher3/popup/SystemShortcut.java
@@ -50,8 +50,6 @@
      */
     private boolean isEnabled = true;
 
-    private boolean mHasFinishRecentsInAction = false;
-
     public SystemShortcut(int iconResId, int labelResId, T target, ItemInfo itemInfo) {
         mIconResId = iconResId;
         mLabelResId = labelResId;
@@ -102,14 +100,6 @@
         return mAccessibilityActionId == action;
     }
 
-    public void setHasFinishRecentsInAction(boolean hasFinishRecentsInAction) {
-        mHasFinishRecentsInAction = hasFinishRecentsInAction;
-    }
-
-    public boolean hasFinishRecentsInAction() {
-        return mHasFinishRecentsInAction;
-    }
-
     public interface Factory<T extends BaseDraggingActivity> {
 
         @Nullable SystemShortcut<T> getShortcut(T activity, ItemInfo itemInfo);
diff --git a/src/com/android/launcher3/provider/ImportDataTask.java b/src/com/android/launcher3/provider/ImportDataTask.java
deleted file mode 100644
index c9af2fe..0000000
--- a/src/com/android/launcher3/provider/ImportDataTask.java
+++ /dev/null
@@ -1,438 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.launcher3.provider;
-
-import static com.android.launcher3.Utilities.getDevicePrefs;
-
-import android.content.ContentProviderOperation;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.pm.ApplicationInfo;
-import android.content.pm.PackageManager;
-import android.content.pm.ProviderInfo;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.net.Uri;
-import android.os.Process;
-import android.text.TextUtils;
-import android.util.ArrayMap;
-import android.util.SparseBooleanArray;
-
-import com.android.launcher3.AutoInstallsLayout.LayoutParserCallback;
-import com.android.launcher3.DefaultLayoutParser;
-import com.android.launcher3.LauncherAppState;
-import com.android.launcher3.LauncherProvider;
-import com.android.launcher3.LauncherSettings;
-import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.LauncherSettings.Settings;
-import com.android.launcher3.Workspace;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.logging.FileLog;
-import com.android.launcher3.model.GridSizeMigrationTask;
-import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.pm.UserCache;
-import com.android.launcher3.util.IntArray;
-import com.android.launcher3.util.IntSparseArrayMap;
-import com.android.launcher3.util.PackageManagerHelper;
-
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.HashSet;
-
-/**
- * Utility class to import data from another Launcher which is based on Launcher3 schema.
- */
-public class ImportDataTask {
-
-    public static final String KEY_DATA_IMPORT_SRC_PKG = "data_import_src_pkg";
-    public static final String KEY_DATA_IMPORT_SRC_AUTHORITY = "data_import_src_authority";
-
-    private static final String TAG = "ImportDataTask";
-    private static final int MIN_ITEM_COUNT_FOR_SUCCESSFUL_MIGRATION = 6;
-    // Insert items progressively to avoid OOM exception when loading icons.
-    private static final int BATCH_INSERT_SIZE = 15;
-
-    private final Context mContext;
-
-    private final Uri mOtherFavoritesUri;
-
-    private int mHotseatSize;
-    private int mMaxGridSizeX;
-    private int mMaxGridSizeY;
-
-    private ImportDataTask(Context context, String sourceAuthority) {
-        mContext = context;
-        mOtherFavoritesUri = Uri.parse("content://" + sourceAuthority + "/" + Favorites.TABLE_NAME);
-    }
-
-    public boolean importWorkspace() throws Exception {
-        FileLog.d(TAG, "Importing DB from " + mOtherFavoritesUri);
-
-        mHotseatSize = mMaxGridSizeX = mMaxGridSizeY = 0;
-        importWorkspaceItems();
-        GridSizeMigrationTask.markForMigration(mContext, mMaxGridSizeX, mMaxGridSizeY, mHotseatSize);
-
-        // Create empty DB flag.
-        LauncherSettings.Settings.call(mContext.getContentResolver(),
-                LauncherSettings.Settings.METHOD_CLEAR_EMPTY_DB_FLAG);
-        return true;
-    }
-
-    /**
-     * 1) Imports all the workspace entries from the source provider.
-     * 2) For home screen entries, maps the screen id based on {@param screenIdMap}
-     * 3) In the end fills any holes in hotseat with items from default hotseat layout.
-     */
-    private void importWorkspaceItems() throws Exception {
-        String profileId = Long.toString(UserCache.INSTANCE.get(mContext)
-                .getSerialNumberForUser(Process.myUserHandle()));
-
-        boolean createEmptyRowOnFirstScreen;
-        if (FeatureFlags.QSB_ON_FIRST_SCREEN) {
-            try (Cursor c = mContext.getContentResolver().query(mOtherFavoritesUri, null,
-                    // get items on the first row of the first screen (min screen id)
-                    "profileId = ? AND container = -100 AND cellY = 0 AND screen = " +
-                    "(SELECT MIN(screen) FROM favorites WHERE container = -100)",
-                    new String[]{profileId},
-                    null)) {
-                // First row of first screen is not empty
-                createEmptyRowOnFirstScreen = c.moveToNext();
-            }
-        } else {
-            createEmptyRowOnFirstScreen = false;
-        }
-
-        ArrayList<ContentProviderOperation> insertOperations = new ArrayList<>(BATCH_INSERT_SIZE);
-
-        // Set of package names present in hotseat
-        final HashSet<String> hotseatTargetApps = new HashSet<>();
-        int maxId = 0;
-
-        // Number of imported items on workspace and hotseat
-        int totalItemsOnWorkspace = 0;
-
-        try (Cursor c = mContext.getContentResolver()
-                .query(mOtherFavoritesUri, null,
-                        // Only migrate the primary user
-                        Favorites.PROFILE_ID + " = ?", new String[]{profileId},
-                        // Get the items sorted by container, so that the folders are loaded
-                        // before the corresponding items.
-                        Favorites.CONTAINER + " , " + Favorites.SCREEN)) {
-
-            // various columns we expect to exist.
-            final int idIndex = c.getColumnIndexOrThrow(Favorites._ID);
-            final int intentIndex = c.getColumnIndexOrThrow(Favorites.INTENT);
-            final int titleIndex = c.getColumnIndexOrThrow(Favorites.TITLE);
-            final int containerIndex = c.getColumnIndexOrThrow(Favorites.CONTAINER);
-            final int itemTypeIndex = c.getColumnIndexOrThrow(Favorites.ITEM_TYPE);
-            final int widgetProviderIndex = c.getColumnIndexOrThrow(Favorites.APPWIDGET_PROVIDER);
-            final int screenIndex = c.getColumnIndexOrThrow(Favorites.SCREEN);
-            final int cellXIndex = c.getColumnIndexOrThrow(Favorites.CELLX);
-            final int cellYIndex = c.getColumnIndexOrThrow(Favorites.CELLY);
-            final int spanXIndex = c.getColumnIndexOrThrow(Favorites.SPANX);
-            final int spanYIndex = c.getColumnIndexOrThrow(Favorites.SPANY);
-            final int rankIndex = c.getColumnIndexOrThrow(Favorites.RANK);
-            final int iconIndex = c.getColumnIndexOrThrow(Favorites.ICON);
-            final int iconPackageIndex = c.getColumnIndexOrThrow(Favorites.ICON_PACKAGE);
-            final int iconResourceIndex = c.getColumnIndexOrThrow(Favorites.ICON_RESOURCE);
-
-            SparseBooleanArray mValidFolders = new SparseBooleanArray();
-            ContentValues values = new ContentValues();
-
-            Integer firstScreenId = null;
-            while (c.moveToNext()) {
-                values.clear();
-                int id = c.getInt(idIndex);
-                maxId = Math.max(maxId, id);
-                int type = c.getInt(itemTypeIndex);
-                int container = c.getInt(containerIndex);
-
-                int screen = c.getInt(screenIndex);
-
-                int cellX = c.getInt(cellXIndex);
-                int cellY = c.getInt(cellYIndex);
-                int spanX = c.getInt(spanXIndex);
-                int spanY = c.getInt(spanYIndex);
-
-                switch (container) {
-                    case Favorites.CONTAINER_DESKTOP: {
-                        if (screen < Workspace.FIRST_SCREEN_ID) {
-                            FileLog.d(TAG, String.format(
-                                    "Skipping item %d, type %d not on a valid screen %d",
-                                    id, type, screen));
-                            continue;
-                        }
-                        if (firstScreenId == null) {
-                            firstScreenId = screen;
-                        }
-                        // Reset the screen to 0-index value
-                        if (createEmptyRowOnFirstScreen && firstScreenId.equals(screen)) {
-                            // Shift items by 1.
-                            cellY++;
-                            // Change the screen id to first screen
-                            screen = Workspace.FIRST_SCREEN_ID;
-                        }
-
-                        mMaxGridSizeX = Math.max(mMaxGridSizeX, cellX + spanX);
-                        mMaxGridSizeY = Math.max(mMaxGridSizeY, cellY + spanY);
-                        break;
-                    }
-                    case Favorites.CONTAINER_HOTSEAT: {
-                        mHotseatSize = Math.max(mHotseatSize, screen + 1);
-                        break;
-                    }
-                    default:
-                        if (!mValidFolders.get(container)) {
-                            FileLog.d(TAG, String.format("Skipping item %d, type %d not in a valid folder %d", id, type, container));
-                            continue;
-                        }
-                }
-
-                Intent intent = null;
-                switch (type) {
-                    case Favorites.ITEM_TYPE_FOLDER: {
-                        mValidFolders.put(id, true);
-                        // Use a empty intent to indicate a folder.
-                        intent = new Intent();
-                        break;
-                    }
-                    case Favorites.ITEM_TYPE_APPWIDGET: {
-                        values.put(Favorites.RESTORED,
-                                LauncherAppWidgetInfo.FLAG_ID_NOT_VALID |
-                                        LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY |
-                                        LauncherAppWidgetInfo.FLAG_UI_NOT_READY);
-                        values.put(Favorites.APPWIDGET_PROVIDER, c.getString(widgetProviderIndex));
-                        break;
-                    }
-                    case Favorites.ITEM_TYPE_SHORTCUT:
-                    case Favorites.ITEM_TYPE_APPLICATION: {
-                        intent = Intent.parseUri(c.getString(intentIndex), 0);
-                        if (PackageManagerHelper.isLauncherAppTarget(intent)) {
-                            type = Favorites.ITEM_TYPE_APPLICATION;
-                        } else {
-                            values.put(Favorites.ICON_PACKAGE, c.getString(iconPackageIndex));
-                            values.put(Favorites.ICON_RESOURCE, c.getString(iconResourceIndex));
-                        }
-                        values.put(Favorites.ICON,  c.getBlob(iconIndex));
-                        values.put(Favorites.INTENT, intent.toUri(0));
-                        values.put(Favorites.RANK, c.getInt(rankIndex));
-
-                        values.put(Favorites.RESTORED, 1);
-                        break;
-                    }
-                    default:
-                        FileLog.d(TAG, String.format("Skipping item %d, not a valid type %d", id, type));
-                        continue;
-                }
-
-                if (container == Favorites.CONTAINER_HOTSEAT) {
-                    if (intent == null) {
-                        FileLog.d(TAG, String.format("Skipping item %d, null intent on hotseat", id));
-                        continue;
-                    }
-                    if (intent.getComponent() != null) {
-                        intent.setPackage(intent.getComponent().getPackageName());
-                    }
-                    hotseatTargetApps.add(getPackage(intent));
-                }
-
-                values.put(Favorites._ID, id);
-                values.put(Favorites.ITEM_TYPE, type);
-                values.put(Favorites.CONTAINER, container);
-                values.put(Favorites.SCREEN, screen);
-                values.put(Favorites.CELLX, cellX);
-                values.put(Favorites.CELLY, cellY);
-                values.put(Favorites.SPANX, spanX);
-                values.put(Favorites.SPANY, spanY);
-                values.put(Favorites.TITLE, c.getString(titleIndex));
-                insertOperations.add(ContentProviderOperation
-                        .newInsert(Favorites.CONTENT_URI).withValues(values).build());
-                if (container < 0) {
-                    totalItemsOnWorkspace++;
-                }
-
-                if (insertOperations.size() >= BATCH_INSERT_SIZE) {
-                    mContext.getContentResolver().applyBatch(LauncherProvider.AUTHORITY,
-                            insertOperations);
-                    insertOperations.clear();
-                }
-            }
-        }
-        FileLog.d(TAG, totalItemsOnWorkspace + " items imported from external source");
-        if (totalItemsOnWorkspace < MIN_ITEM_COUNT_FOR_SUCCESSFUL_MIGRATION) {
-            throw new Exception("Insufficient data");
-        }
-        if (!insertOperations.isEmpty()) {
-            mContext.getContentResolver().applyBatch(LauncherProvider.AUTHORITY,
-                    insertOperations);
-            insertOperations.clear();
-        }
-
-        IntSparseArrayMap<Object> hotseatItems = GridSizeMigrationTask
-                .removeBrokenHotseatItems(mContext);
-        int myHotseatCount = LauncherAppState.getIDP(mContext).numDatabaseHotseatIcons;
-        if (hotseatItems.size() < myHotseatCount) {
-            // Insufficient hotseat items. Add a few more.
-            HotseatParserCallback parserCallback = new HotseatParserCallback(
-                    hotseatTargetApps, hotseatItems, insertOperations, maxId + 1, myHotseatCount);
-            new HotseatLayoutParser(mContext,
-                    parserCallback).loadLayout(null, new IntArray());
-            mHotseatSize = hotseatItems.keyAt(hotseatItems.size() - 1) + 1;
-
-            if (!insertOperations.isEmpty()) {
-                mContext.getContentResolver().applyBatch(LauncherProvider.AUTHORITY,
-                        insertOperations);
-            }
-        }
-    }
-
-    private static String getPackage(Intent intent) {
-        return intent.getComponent() != null ? intent.getComponent().getPackageName()
-            : intent.getPackage();
-    }
-
-    /**
-     * Performs data import if possible.
-     * @return true on successful data import, false if it was not available
-     * @throws Exception if the import failed
-     */
-    public static boolean performImportIfPossible(Context context) throws Exception {
-        SharedPreferences devicePrefs = getDevicePrefs(context);
-        String sourcePackage = devicePrefs.getString(KEY_DATA_IMPORT_SRC_PKG, "");
-        String sourceAuthority = devicePrefs.getString(KEY_DATA_IMPORT_SRC_AUTHORITY, "");
-
-        if (TextUtils.isEmpty(sourcePackage) || TextUtils.isEmpty(sourceAuthority)) {
-            return false;
-        }
-
-        // Synchronously clear the migration flags. This ensures that we do not try migration
-        // again and thus prevents potential crash loops due to migration failure.
-        devicePrefs.edit().remove(KEY_DATA_IMPORT_SRC_PKG).remove(KEY_DATA_IMPORT_SRC_AUTHORITY).commit();
-
-        if (!Settings.call(context.getContentResolver(), Settings.METHOD_WAS_EMPTY_DB_CREATED)
-                .getBoolean(Settings.EXTRA_VALUE, false)) {
-            // Only migration if a new DB was created.
-            return false;
-        }
-
-        for (ProviderInfo info : context.getPackageManager().queryContentProviders(
-                null, context.getApplicationInfo().uid, 0)) {
-
-            if (sourcePackage.equals(info.packageName)) {
-                if ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
-                    // Only migrate if the source launcher is also on system image.
-                    return false;
-                }
-
-                // Wait until we found a provider with matching authority.
-                if (sourceAuthority.equals(info.authority)) {
-                    if (TextUtils.isEmpty(info.readPermission) ||
-                            context.checkPermission(info.readPermission, Process.myPid(),
-                                    Process.myUid()) == PackageManager.PERMISSION_GRANTED) {
-                        // All checks passed, run the import task.
-                        return new ImportDataTask(context, sourceAuthority).importWorkspace();
-                    }
-                }
-            }
-        }
-        return false;
-    }
-
-    /**
-     * Extension of {@link DefaultLayoutParser} which only allows icons and shortcuts.
-     */
-    private static class HotseatLayoutParser extends DefaultLayoutParser {
-        public HotseatLayoutParser(Context context, LayoutParserCallback callback) {
-            super(context, null, callback, context.getResources(),
-                    LauncherAppState.getIDP(context).defaultLayoutId);
-        }
-
-        @Override
-        protected ArrayMap<String, TagParser> getLayoutElementsMap() {
-            // Only allow shortcut parsers
-            ArrayMap<String, TagParser> parsers = new ArrayMap<>();
-            parsers.put(TAG_FAVORITE, new AppShortcutWithUriParser());
-            parsers.put(TAG_SHORTCUT, new UriShortcutParser(mSourceRes));
-            parsers.put(TAG_RESOLVE, new ResolveParser());
-            return parsers;
-        }
-    }
-
-    /**
-     * {@link LayoutParserCallback} which adds items in empty hotseat spots.
-     */
-    private static class HotseatParserCallback implements LayoutParserCallback {
-        private final HashSet<String> mExistingApps;
-        private final IntSparseArrayMap<Object> mExistingItems;
-        private final ArrayList<ContentProviderOperation> mOutOps;
-        private final int mRequiredSize;
-        private int mStartItemId;
-
-        HotseatParserCallback(
-                HashSet<String> existingApps, IntSparseArrayMap<Object> existingItems,
-                ArrayList<ContentProviderOperation> outOps, int startItemId, int requiredSize) {
-            mExistingApps = existingApps;
-            mExistingItems = existingItems;
-            mOutOps = outOps;
-            mRequiredSize = requiredSize;
-            mStartItemId = startItemId;
-        }
-
-        @Override
-        public int generateNewItemId() {
-            return mStartItemId++;
-        }
-
-        @Override
-        public int insertAndCheck(SQLiteDatabase db, ContentValues values) {
-            if (mExistingItems.size() >= mRequiredSize) {
-                // No need to add more items.
-                return 0;
-            }
-            if (!Integer.valueOf(Favorites.CONTAINER_HOTSEAT)
-                    .equals(values.getAsInteger(Favorites.CONTAINER))) {
-                // Ignore items which are not for hotseat.
-                return 0;
-            }
-
-            Intent intent;
-            try {
-                intent = Intent.parseUri(values.getAsString(Favorites.INTENT), 0);
-            } catch (URISyntaxException e) {
-                return 0;
-            }
-            String pkg = getPackage(intent);
-            if (pkg == null || mExistingApps.contains(pkg)) {
-                // The item does not target an app or is already in hotseat.
-                return 0;
-            }
-            mExistingApps.add(pkg);
-
-            // find next vacant spot.
-            int screen = 0;
-            while (mExistingItems.get(screen) != null) {
-                screen++;
-            }
-            mExistingItems.put(screen, intent);
-            values.put(Favorites.SCREEN, screen);
-            mOutOps.add(ContentProviderOperation.newInsert(Favorites.CONTENT_URI).withValues(values).build());
-            return 0;
-        }
-    }
-}
diff --git a/src/com/android/launcher3/provider/LauncherDbUtils.java b/src/com/android/launcher3/provider/LauncherDbUtils.java
index 7e05a5a..6855bb1 100644
--- a/src/com/android/launcher3/provider/LauncherDbUtils.java
+++ b/src/com/android/launcher3/provider/LauncherDbUtils.java
@@ -16,84 +16,21 @@
 
 package com.android.launcher3.provider;
 
-import android.content.ContentValues;
 import android.content.Context;
 import android.database.Cursor;
-import android.database.DatabaseUtils;
 import android.database.sqlite.SQLiteDatabase;
 import android.os.Binder;
 import android.os.Process;
-import android.util.Log;
 
-import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.util.IntArray;
 
-import java.util.Locale;
-
 /**
  * A set of utility methods for Launcher DB used for DB updates and migration.
  */
 public class LauncherDbUtils {
 
-    private static final String TAG = "LauncherDbUtils";
-
-    /**
-     * Makes the first screen as screen 0 (if screen 0 already exists,
-     * renames it to some other number).
-     * If the first row of screen 0 is non empty, runs a 'lossy' GridMigrationTask to clear
-     * the first row. The items in the first screen are moved and resized but the carry-forward
-     * items are simply deleted.
-     */
-    public static boolean prepareScreenZeroToHostQsb(Context context, SQLiteDatabase db) {
-        try (SQLiteTransaction t = new SQLiteTransaction(db)) {
-            // Get the first screen
-            final int firstScreenId;
-            try (Cursor c = db.rawQuery(String.format(Locale.ENGLISH,
-                    "SELECT MIN(%1$s) from %2$s where %3$s = %4$d",
-                    Favorites.SCREEN, Favorites.TABLE_NAME, Favorites.CONTAINER,
-                    Favorites.CONTAINER_DESKTOP), null)) {
-
-                if (!c.moveToNext()) {
-                    // No update needed
-                    t.commit();
-                    return true;
-                }
-
-                firstScreenId = c.getInt(0);
-            }
-
-            if (firstScreenId != 0) {
-                // Rename the first screen to 0.
-                renameScreen(db, firstScreenId, 0);
-            }
-
-            // Check if the first row is empty
-            if (DatabaseUtils.queryNumEntries(db, Favorites.TABLE_NAME,
-                    "container = -100 and screen = 0 and cellY = 0") == 0) {
-                // First row is empty, no need to migrate.
-                t.commit();
-                return true;
-            }
-
-            new LossyScreenMigrationTask(context, LauncherAppState.getIDP(context), db)
-                    .migrateScreen0();
-            t.commit();
-            return true;
-        } catch (Exception e) {
-            Log.e(TAG, "Failed to update workspace size", e);
-            return false;
-        }
-    }
-
-    private static void renameScreen(SQLiteDatabase db, int oldScreen, int newScreen) {
-        String[] whereParams = new String[] { Integer.toString(oldScreen) };
-        ContentValues values = new ContentValues();
-        values.put(Favorites.SCREEN, newScreen);
-        db.update(Favorites.TABLE_NAME, values, "container = -100 and screen = ?", whereParams);
-    }
-
     public static IntArray queryIntArray(SQLiteDatabase db, String tableName, String columnName,
             String selection, String groupBy, String orderBy) {
         IntArray out = new IntArray();
diff --git a/src/com/android/launcher3/provider/LossyScreenMigrationTask.java b/src/com/android/launcher3/provider/LossyScreenMigrationTask.java
deleted file mode 100644
index c0111b9..0000000
--- a/src/com/android/launcher3/provider/LossyScreenMigrationTask.java
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.launcher3.provider;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.database.sqlite.SQLiteDatabase;
-import android.graphics.Point;
-
-import com.android.launcher3.InvariantDeviceProfile;
-import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace;
-import com.android.launcher3.model.GridSizeMigrationTask;
-import com.android.launcher3.util.IntSparseArrayMap;
-
-import java.util.ArrayList;
-
-/**
- * An extension of {@link GridSizeMigrationTask} which migrates only one screen and
- * deletes all carry-forward items.
- */
-public class LossyScreenMigrationTask extends GridSizeMigrationTask {
-
-    private final IntSparseArrayMap<DbEntry> mOriginalItems;
-    private final IntSparseArrayMap<DbEntry> mUpdates;
-
-    protected LossyScreenMigrationTask(
-            Context context, InvariantDeviceProfile idp, SQLiteDatabase db) {
-        // Decrease the rows count by 1
-        super(context, db, getValidPackages(context), false /* usePreviewTable */,
-                new Point(idp.numColumns, idp.numRows + 1),
-                new Point(idp.numColumns, idp.numRows));
-
-        mOriginalItems = new IntSparseArrayMap<>();
-        mUpdates = new IntSparseArrayMap<>();
-    }
-
-    @Override
-    protected void update(DbEntry item) {
-        mUpdates.put(item.id, item.copy());
-    }
-
-    @Override
-    protected ArrayList<DbEntry> loadWorkspaceEntries(int screen) {
-        ArrayList<DbEntry> result = super.loadWorkspaceEntries(screen);
-        for (DbEntry entry : result) {
-            mOriginalItems.put(entry.id, entry.copy());
-
-            // Shift all items by 1 in y direction and mark them for update.
-            entry.cellY++;
-            mUpdates.put(entry.id, entry.copy());
-        }
-
-        return result;
-    }
-
-    public void migrateScreen0() {
-        migrateScreen(Workspace.FIRST_SCREEN_ID);
-
-        ContentValues tempValues = new ContentValues();
-        for (DbEntry update : mUpdates) {
-            DbEntry org = mOriginalItems.get(update.id);
-
-            if (org.cellX != update.cellX || org.cellY != update.cellY
-                    || org.spanX != update.spanX || org.spanY != update.spanY) {
-                tempValues.clear();
-                update.addToContentValues(tempValues);
-                mDb.update(Favorites.TABLE_NAME, tempValues, "_id = ?",
-                        new String[] {Integer.toString(update.id)});
-            }
-        }
-
-        // Delete any carry over items as we are only migration a single screen.
-        for (DbEntry entry : mCarryOver) {
-            mEntryToRemove.add(entry.id);
-        }
-
-        if (!mEntryToRemove.isEmpty()) {
-            mDb.delete(Favorites.TABLE_NAME,
-                    Utilities.createDbSelectionQuery(Favorites._ID, mEntryToRemove), null);
-        }
-    }
-}
diff --git a/src/com/android/launcher3/provider/RestoreDbTask.java b/src/com/android/launcher3/provider/RestoreDbTask.java
index 223f4f1..8d02a4a 100644
--- a/src/com/android/launcher3/provider/RestoreDbTask.java
+++ b/src/com/android/launcher3/provider/RestoreDbTask.java
@@ -16,6 +16,7 @@
 
 package com.android.launcher3.provider;
 
+import static com.android.launcher3.model.DeviceGridState.TYPE_PHONE;
 import static com.android.launcher3.provider.LauncherDbUtils.dropTable;
 
 import android.app.backup.BackupManager;
@@ -38,6 +39,7 @@
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.logging.FileLog;
+import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.model.GridBackupTable;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
@@ -57,7 +59,7 @@
 public class RestoreDbTask {
 
     private static final String TAG = "RestoreDbTask";
-    private static final String RESTORE_TASK_PENDING = "restore_task_pending";
+    private static final String RESTORED_DEVICE_TYPE = "restored_task_pending";
 
     private static final String INFO_COLUMN_NAME = "name";
     private static final String INFO_COLUMN_DEFAULT_VALUE = "dflt_value";
@@ -65,13 +67,33 @@
     private static final String APPWIDGET_OLD_IDS = "appwidget_old_ids";
     private static final String APPWIDGET_IDS = "appwidget_ids";
 
-    public static boolean performRestore(Context context, DatabaseHelper helper,
-            BackupManager backupManager) {
+    /**
+     * Tries to restore the backup DB if needed
+     */
+    public static void restoreIfNeeded(Context context, DatabaseHelper helper) {
+        if (!isPending(context)) {
+            return;
+        }
+        if (!performRestore(context, helper)) {
+            helper.createEmptyDB(helper.getWritableDatabase());
+        }
+
+        // Set is pending to false irrespective of the result, so that it doesn't get
+        // executed again.
+        Utilities.getPrefs(context).edit().remove(RESTORED_DEVICE_TYPE).commit();
+    }
+
+    private static boolean performRestore(Context context, DatabaseHelper helper) {
+        if (new DeviceGridState(LauncherAppState.getIDP(context)).getDeviceType()
+                != Utilities.getPrefs(context).getInt(RESTORED_DEVICE_TYPE, TYPE_PHONE)) {
+            // DO not restore if the device types are different
+            return false;
+        }
         SQLiteDatabase db = helper.getWritableDatabase();
         try (SQLiteTransaction t = new SQLiteTransaction(db)) {
             RestoreDbTask task = new RestoreDbTask();
             task.backupWorkspace(context, db);
-            task.sanitizeDB(helper, db, backupManager);
+            task.sanitizeDB(helper, db, new BackupManager(context));
             task.restoreAppWidgetIdsIfExists(context);
             t.commit();
             return true;
@@ -279,12 +301,17 @@
     }
 
     public static boolean isPending(Context context) {
-        return Utilities.getPrefs(context).getBoolean(RESTORE_TASK_PENDING, false);
+        return Utilities.getPrefs(context).contains(RESTORED_DEVICE_TYPE);
     }
 
-    public static void setPending(Context context, boolean isPending) {
-        FileLog.d(TAG, "Restore data received through full backup " + isPending);
-        Utilities.getPrefs(context).edit().putBoolean(RESTORE_TASK_PENDING, isPending).commit();
+    /**
+     * Marks the DB state as pending restoration
+     */
+    public static void setPending(Context context) {
+        FileLog.d(TAG, "Restore data received through full backup ");
+        Utilities.getPrefs(context).edit()
+                .putInt(RESTORED_DEVICE_TYPE, new DeviceGridState(context).getDeviceType())
+                .commit();
     }
 
     private void restoreAppWidgetIdsIfExists(Context context) {
diff --git a/src/com/android/launcher3/recyclerview/ViewHolderBinder.java b/src/com/android/launcher3/recyclerview/ViewHolderBinder.java
index 5b8d5bc..31436c4 100644
--- a/src/com/android/launcher3/recyclerview/ViewHolderBinder.java
+++ b/src/com/android/launcher3/recyclerview/ViewHolderBinder.java
@@ -17,8 +17,13 @@
 
 import android.view.ViewGroup;
 
+import androidx.annotation.IntDef;
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.List;
+
 /**
  * Creates and populates views with data
  *
@@ -26,6 +31,15 @@
  * @param <V> A subclass of {@link ViewHolder} which holds references to views.
  */
 public interface ViewHolderBinder<T, V extends ViewHolder> {
+
+    int POSITION_DEFAULT = 0;
+    int POSITION_FIRST = 1 << 0;
+    int POSITION_LAST = 1 << 1;
+
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(value = {POSITION_DEFAULT, POSITION_FIRST, POSITION_LAST}, flag = true)
+    @interface ListPosition {}
+
     /**
      * Creates a new view, and attach it to the parent {@link ViewGroup}. Then, populates UI
      * references in a {@link ViewHolder}.
@@ -33,7 +47,7 @@
     V newViewHolder(ViewGroup parent);
 
     /** Populate UI references in {@link ViewHolder} with data. */
-    void bindViewHolder(V viewHolder, T data, int position);
+    void bindViewHolder(V viewHolder, T data, @ListPosition int position, List<Object> payloads);
 
     /**
      * Called when the view is recycled. Views are recycled in batches once they are sufficiently
diff --git a/src/com/android/launcher3/secondarydisplay/SecondaryDisplayLauncher.java b/src/com/android/launcher3/secondarydisplay/SecondaryDisplayLauncher.java
index 5999091..1a96c23 100644
--- a/src/com/android/launcher3/secondarydisplay/SecondaryDisplayLauncher.java
+++ b/src/com/android/launcher3/secondarydisplay/SecondaryDisplayLauncher.java
@@ -35,22 +35,13 @@
 import com.android.launcher3.model.data.AppInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.ItemInfoWithIcon;
-import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.popup.PopupContainerWithArrow;
 import com.android.launcher3.popup.PopupDataProvider;
 import com.android.launcher3.util.ComponentKey;
-import com.android.launcher3.util.IntArray;
-import com.android.launcher3.util.ItemInfoMatcher;
 import com.android.launcher3.util.Themes;
-import com.android.launcher3.util.ViewOnDrawExecutor;
 import com.android.launcher3.views.BaseDragLayer;
-import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 
-import java.util.ArrayList;
 import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
 
 /**
  * Launcher activity for secondary displays
@@ -175,67 +166,10 @@
     }
 
     @Override
-    public int getPageToBindSynchronously() {
-        return 0;
-    }
-
-    @Override
-    public void clearPendingBinds() { }
-
-    @Override
-    public void startBinding() { }
-
-    @Override
-    public void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons) { }
-
-    @Override
-    public void bindScreens(IntArray orderedScreenIds) { }
-
-    @Override
-    public void finishFirstPageBind(ViewOnDrawExecutor executor) {
-        if (executor != null) {
-            executor.onLoadAnimationCompleted();
-        }
-    }
-
-    @Override
-    public void finishBindingItems(int pageBoundFirst) { }
-
-    @Override
-    public void preAddApps() { }
-
-    @Override
-    public void bindAppsAdded(IntArray newScreens, ArrayList<ItemInfo> addNotAnimated,
-            ArrayList<ItemInfo> addAnimated) { }
-
-    @Override
     public void bindIncrementalDownloadProgressUpdated(AppInfo app) {
         mAppsView.getAppsStore().updateProgressBar(app);
     }
 
-    @Override
-    public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) { }
-
-    @Override
-    public void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets) { }
-
-    @Override
-    public void bindRestoreItemsChange(HashSet<ItemInfo> updates) { }
-
-    @Override
-    public void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher) { }
-
-    @Override
-    public void bindAllWidgets(List<WidgetsListBaseEntry> widgets) { }
-
-    @Override
-    public void onPageBoundSynchronously(int page) { }
-
-    @Override
-    public void executeOnNextDraw(ViewOnDrawExecutor executor) {
-        executor.attachTo(getDragLayer(), false, null);
-    }
-
     /**
      * Called when apps-button is clicked
      */
diff --git a/src/com/android/launcher3/statemanager/StateManager.java b/src/com/android/launcher3/statemanager/StateManager.java
index b34af97..24d3fd4 100644
--- a/src/com/android/launcher3/statemanager/StateManager.java
+++ b/src/com/android/launcher3/statemanager/StateManager.java
@@ -18,6 +18,7 @@
 
 import static android.animation.ValueAnimator.areAnimatorsEnabled;
 
+import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.anim.AnimatorPlaybackController.callListenerCommandRecursively;
 import static com.android.launcher3.states.StateAnimationConfig.SKIP_ALL_ANIMATIONS;
 
@@ -27,12 +28,14 @@
 import android.animation.AnimatorSet;
 import android.os.Handler;
 import android.os.Looper;
+import android.util.Log;
 
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.states.StateAnimationConfig;
 import com.android.launcher3.states.StateAnimationConfig.AnimationFlags;
+import com.android.launcher3.testing.TestProtocol;
 
 import java.io.PrintWriter;
 import java.util.ArrayList;
@@ -253,6 +256,9 @@
         if (listener != null) {
             animation.addListener(listener);
         }
+        if (TestProtocol.sDebugTracing && state == NORMAL) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME, "goToStateAnimated: " + state);
+        }
         mUiHandler.post(new StartAnimRunnable(animation));
     }
 
@@ -328,11 +334,17 @@
             @Override
             public void onAnimationStart(Animator animation) {
                 // Change the internal state only when the transition actually starts
+                if (TestProtocol.sDebugTracing && state == NORMAL) {
+                    Log.d(TestProtocol.L3_SWIPE_TO_HOME, "onAnimationStart: " + state);
+                }
                 onStateTransitionStart(state);
             }
 
             @Override
             public void onAnimationSuccess(Animator animator) {
+                if (TestProtocol.sDebugTracing && state == NORMAL) {
+                    Log.d(TestProtocol.L3_SWIPE_TO_HOME, "onAnimationEnd: " + state);
+                }
                 onStateTransitionEnd(state);
             }
         };
diff --git a/src/com/android/launcher3/testing/TestInformationHandler.java b/src/com/android/launcher3/testing/TestInformationHandler.java
index 4261d08..86acff7 100644
--- a/src/com/android/launcher3/testing/TestInformationHandler.java
+++ b/src/com/android/launcher3/testing/TestInformationHandler.java
@@ -62,6 +62,10 @@
     }
 
     public Bundle call(String method) {
+        return call(method, /*arg=*/ null);
+    }
+
+    public Bundle call(String method, String arg) {
         final Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_HOME_TO_ALL_APPS_SWIPE_HEIGHT: {
@@ -98,12 +102,23 @@
                         l -> WidgetsFullSheet.getWidgetsView(l).getCurrentScrollY());
             }
 
-            case TestProtocol.REQUEST_WINDOW_INSETS: {
-                return getUIProperty(Bundle::putParcelable, a -> {
-                    WindowInsets insets = a.getWindow()
+            case TestProtocol.REQUEST_TARGET_INSETS: {
+                return getUIProperty(Bundle::putParcelable, activity -> {
+                    WindowInsets insets = activity.getWindow()
                             .getDecorView().getRootWindowInsets();
                     return Insets.max(
-                            insets.getSystemGestureInsets(), insets.getSystemWindowInsets());
+                            insets.getSystemGestureInsets(),
+                            insets.getSystemWindowInsets());
+                }, this::getCurrentActivity);
+            }
+
+            case TestProtocol.REQUEST_WINDOW_INSETS: {
+                return getUIProperty(Bundle::putParcelable, activity -> {
+                    WindowInsets insets = activity.getWindow()
+                            .getDecorView().getRootWindowInsets();
+                    return Insets.subtract(
+                            insets.getSystemWindowInsets(),
+                            Insets.of(0, 0, 0, mDeviceProfile.nonOverlappingTaskbarInset));
                 }, this::getCurrentActivity);
             }
 
@@ -117,6 +132,24 @@
                 TestProtocol.sDisableSensorRotation = true;
                 return response;
 
+            case TestProtocol.REQUEST_IS_TABLET:
+                response.putBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD, mDeviceProfile.isTablet);
+                return response;
+
+            case TestProtocol.REQUEST_IS_TWO_PANELS:
+                response.putBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD,
+                        mDeviceProfile.isTwoPanels);
+                return response;
+
+            case TestProtocol.REQUEST_SET_FORCE_PAUSE_TIMEOUT:
+                TestProtocol.sForcePauseTimeout = Long.parseLong(arg);
+                return response;
+
+            case TestProtocol.REQUEST_GET_HAD_NONTEST_EVENTS:
+                response.putBoolean(
+                        TestProtocol.TEST_INFO_RESPONSE_FIELD, TestLogging.sHadEventsNotFromTest);
+                return response;
+
             default:
                 return null;
         }
diff --git a/src/com/android/launcher3/testing/TestInformationProvider.java b/src/com/android/launcher3/testing/TestInformationProvider.java
index bd177c0..4f2619c 100644
--- a/src/com/android/launcher3/testing/TestInformationProvider.java
+++ b/src/com/android/launcher3/testing/TestInformationProvider.java
@@ -60,7 +60,7 @@
         if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
             TestInformationHandler handler = TestInformationHandler.newInstance(getContext());
             handler.init(getContext());
-            return handler.call(method);
+            return handler.call(method, arg);
         }
         return null;
     }
diff --git a/src/com/android/launcher3/testing/TestLogging.java b/src/com/android/launcher3/testing/TestLogging.java
index 51e0819..103b565 100644
--- a/src/com/android/launcher3/testing/TestLogging.java
+++ b/src/com/android/launcher3/testing/TestLogging.java
@@ -17,6 +17,8 @@
 package com.android.launcher3.testing;
 
 import android.util.Log;
+import android.view.InputEvent;
+import android.view.KeyEvent;
 import android.view.MotionEvent;
 
 import com.android.launcher3.Utilities;
@@ -25,6 +27,7 @@
 
 public final class TestLogging {
     private static BiConsumer<String, String> sEventConsumer;
+    public static boolean sHadEventsNotFromTest;
 
     private static void recordEventSlow(String sequence, String event) {
         Log.d(TestProtocol.TAPL_EVENTS_TAG, sequence + " / " + event);
@@ -46,9 +49,24 @@
         }
     }
 
+    private static void registerEventNotFromTest(InputEvent event) {
+        if (!sHadEventsNotFromTest && event.getDeviceId() != -1) {
+            sHadEventsNotFromTest = true;
+            Log.d(TestProtocol.PERMANENT_DIAG_TAG, "First event not from test: " + event);
+        }
+    }
+
+    public static void recordKeyEvent(String sequence, String message, KeyEvent event) {
+        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+            recordEventSlow(sequence, message + ": " + event);
+            registerEventNotFromTest(event);
+        }
+    }
+
     public static void recordMotionEvent(String sequence, String message, MotionEvent event) {
         if (Utilities.IS_RUNNING_IN_TEST_HARNESS && event.getAction() != MotionEvent.ACTION_MOVE) {
             recordEventSlow(sequence, message + ": " + event);
+            registerEventNotFromTest(event);
         }
     }
 
diff --git a/src/com/android/launcher3/testing/TestProtocol.java b/src/com/android/launcher3/testing/TestProtocol.java
index b6da7fc..c484811 100644
--- a/src/com/android/launcher3/testing/TestProtocol.java
+++ b/src/com/android/launcher3/testing/TestProtocol.java
@@ -24,6 +24,7 @@
     public static final String SWITCHED_TO_STATE_MESSAGE = "TAPL_SWITCHED_TO_STATE";
     public static final String SCROLL_FINISHED_MESSAGE = "TAPL_SCROLL_FINISHED";
     public static final String PAUSE_DETECTED_MESSAGE = "TAPL_PAUSE_DETECTED";
+    public static final String DISMISS_ANIMATION_ENDS_MESSAGE = "TAPL_DISMISS_ANIMATION_ENDS";
     public static final int NORMAL_STATE_ORDINAL = 0;
     public static final int SPRING_LOADED_STATE_ORDINAL = 1;
     public static final int OVERVIEW_STATE_ORDINAL = 2;
@@ -85,6 +86,7 @@
     public static final String REQUEST_APP_LIST_FREEZE_FLAGS = "app-list-freeze-flags";
     public static final String REQUEST_APPS_LIST_SCROLL_Y = "apps-list-scroll-y";
     public static final String REQUEST_WIDGETS_SCROLL_Y = "widgets-scroll-y";
+    public static final String REQUEST_TARGET_INSETS = "target-insets";
     public static final String REQUEST_WINDOW_INSETS = "window-insets";
     public static final String REQUEST_PID = "pid";
     public static final String REQUEST_FORCE_GC = "gc";
@@ -92,8 +94,14 @@
     public static final String REQUEST_RECENT_TASKS_LIST = "recent-tasks-list";
     public static final String REQUEST_START_EVENT_LOGGING = "start-event-logging";
     public static final String REQUEST_GET_TEST_EVENTS = "get-test-events";
+    public static final String REQUEST_GET_HAD_NONTEST_EVENTS = "get-had-nontest-events";
     public static final String REQUEST_STOP_EVENT_LOGGING = "stop-event-logging";
     public static final String REQUEST_CLEAR_DATA = "clear-data";
+    public static final String REQUEST_IS_TABLET = "is-tablet";
+    public static final String REQUEST_IS_TWO_PANELS = "is-two-panel";
+
+    public static Long sForcePauseTimeout;
+    public static final String REQUEST_SET_FORCE_PAUSE_TIMEOUT = "set-force-pause-timeout";
 
     public static boolean sDebugTracing = false;
     public static final String REQUEST_ENABLE_DEBUG_TRACING = "enable-debug-tracing";
@@ -109,4 +117,7 @@
     public static final String PERMANENT_DIAG_TAG = "TaplTarget";
     public static final String WORK_PROFILE_REMOVED = "b/159671700";
     public static final String FALLBACK_ACTIVITY_NO_SET = "b/181019015";
+    public static final String THIRD_PARTY_LAUNCHER_NOT_SET = "b/187080582";
+    public static final String TASK_VIEW_ID_CRASH = "b/195430732";
+    public static final String L3_SWIPE_TO_HOME = "b/192018189";
 }
diff --git a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
index d047eca..816e5dc 100644
--- a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
+++ b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
@@ -205,6 +205,16 @@
     }
 
     @Override
+    public void setPrimaryScale(View view, float scale) {
+        view.setScaleY(scale);
+    }
+
+    @Override
+    public void setSecondaryScale(View view, float scale) {
+        view.setScaleX(scale);
+    }
+
+    @Override
     public int getChildStart(View view) {
         return view.getTop();
     }
@@ -353,6 +363,25 @@
     }
 
     @Override
+    public void getInitialSplitPlaceholderBounds(int placeholderHeight, DeviceProfile dp,
+            SplitPositionOption splitPositionOption, Rect out) {
+        // In fake land/seascape, the placeholder always needs to go to the "top" of the device,
+        // which is the same bounds as 0 rotation.
+        int width = dp.widthPx;
+        out.set(0, 0, width, placeholderHeight);
+    }
+
+    @Override
+    public void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
+            SplitPositionOption initialSplitOption, Rect out1, Rect out2) {
+        // In fake land/seascape, the window bounds are always top and bottom half
+        int screenHeight = dp.heightPx;
+        int screenWidth = dp.widthPx;
+        out1.set(0, 0, screenWidth, screenHeight / 2  - splitDividerSize);
+        out2.set(0, screenHeight / 2  + splitDividerSize, screenWidth, screenHeight);
+    }
+
+    @Override
     public FloatProperty getSplitSelectTaskOffset(FloatProperty primary, FloatProperty secondary,
             DeviceProfile deviceProfile) {
         return primary;
diff --git a/src/com/android/launcher3/touch/PagedOrientationHandler.java b/src/com/android/launcher3/touch/PagedOrientationHandler.java
index 266e05f..dae2dde 100644
--- a/src/com/android/launcher3/touch/PagedOrientationHandler.java
+++ b/src/com/android/launcher3/touch/PagedOrientationHandler.java
@@ -99,6 +99,8 @@
     boolean getRecentsRtlSetting(Resources resources);
     float getDegreesRotated();
     int getRotation();
+    void setPrimaryScale(View view, float scale);
+    void setSecondaryScale(View view, float scale);
 
     <T> T getPrimaryValue(T x, T y);
     <T> T getSecondaryValue(T x, T y);
@@ -114,6 +116,22 @@
             DeviceProfile deviceProfile);
     int getDistanceToBottomOfRect(DeviceProfile dp, Rect rect);
     List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp);
+    /**
+     * @param splitholderSize height of placeholder view in portrait, width in landscape
+     */
+    void getInitialSplitPlaceholderBounds(int splitholderSize, DeviceProfile dp,
+            SplitPositionOption splitPositionOption, Rect out);
+
+    /**
+     * @param splitDividerSize height of split screen drag handle in portrait, width in landscape
+     * @param initialSplitOption the split position option (top/left, bottom/right) of the first
+     *                           task selected for entering split
+     * @param out1 the bounds for where the first selected app will be
+     * @param out2 the bounds for where the second selected app will be, complimentary to
+     *             {@param out1} based on {@param initialSplitOption}
+     */
+    void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
+            SplitPositionOption initialSplitOption, Rect out1, Rect out2);
 
     // Overview TaskMenuView methods
     float getTaskMenuX(float x, View thumbnailView, int overScroll);
diff --git a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
index dd97af5..1253589 100644
--- a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
+++ b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
@@ -24,6 +24,7 @@
 import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_TYPE_MAIN;
 
 import android.content.res.Resources;
+import android.graphics.Matrix;
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.RectF;
@@ -47,6 +48,9 @@
 
 public class PortraitPagedViewHandler implements PagedOrientationHandler {
 
+    private final Matrix mTmpMatrix = new Matrix();
+    private final RectF mTmpRectF = new RectF();
+
     @Override
     public <T> T getPrimaryValue(T x, T y) {
         return x;
@@ -207,6 +211,16 @@
     }
 
     @Override
+    public void setPrimaryScale(View view, float scale) {
+        view.setScaleX(scale);
+    }
+
+    @Override
+    public void setSecondaryScale(View view, float scale) {
+        view.setScaleY(scale);
+    }
+
+    @Override
     public int getChildStart(View view) {
         return view.getLeft();
     }
@@ -398,6 +412,62 @@
     }
 
     @Override
+    public void getInitialSplitPlaceholderBounds(int placeholderHeight, DeviceProfile dp,
+            SplitPositionOption splitPositionOption, Rect out) {
+        int width = dp.widthPx;
+        out.set(0, 0, width, placeholderHeight);
+        if (!dp.isLandscape) {
+            // portrait, phone or tablet - spans width of screen, nothing else to do
+            return;
+        }
+
+        // Now we rotate the portrait rect depending on what side we want pinned
+        boolean pinToRight = splitPositionOption.mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+
+        int screenHeight = dp.heightPx;
+        float postRotateScale = (float) screenHeight / width;
+        mTmpMatrix.reset();
+        mTmpMatrix.postRotate(pinToRight ? 90 : 270);
+        mTmpMatrix.postTranslate(pinToRight ? width : 0, pinToRight ? 0 : width);
+        // The placeholder height stays constant after rotation, so we don't change width scale
+        mTmpMatrix.postScale(1, postRotateScale);
+
+        mTmpRectF.set(out);
+        mTmpMatrix.mapRect(mTmpRectF);
+        mTmpRectF.roundOut(out);
+    }
+
+    @Override
+    public void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
+            SplitPositionOption initialSplitOption, Rect out1, Rect out2) {
+        int screenHeight = dp.heightPx;
+        int screenWidth = dp.widthPx;
+        out1.set(0, 0, screenWidth, screenHeight / 2 - splitDividerSize);
+        out2.set(0, screenHeight / 2 + splitDividerSize, screenWidth, screenHeight);
+        if (!dp.isLandscape) {
+            // Portrait - the window bounds are always top and bottom half
+            return;
+        }
+
+        // Now we rotate the portrait rect depending on what side we want pinned
+        boolean pinToRight = initialSplitOption.mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+        float postRotateScale = (float) screenHeight / screenWidth;
+
+        mTmpMatrix.reset();
+        mTmpMatrix.postRotate(pinToRight ? 90 : 270);
+        mTmpMatrix.postTranslate(pinToRight ? screenHeight : 0, pinToRight ? 0 : screenWidth);
+        mTmpMatrix.postScale(1 / postRotateScale, postRotateScale);
+
+        mTmpRectF.set(out1);
+        mTmpMatrix.mapRect(mTmpRectF);
+        mTmpRectF.roundOut(out1);
+
+        mTmpRectF.set(out2);
+        mTmpMatrix.mapRect(mTmpRectF);
+        mTmpRectF.roundOut(out2);
+    }
+
+    @Override
     public FloatProperty getSplitSelectTaskOffset(FloatProperty primary, FloatProperty secondary,
             DeviceProfile dp) {
         if (dp.isLandscape) { // or seascape
diff --git a/src/com/android/launcher3/touch/WorkspaceTouchListener.java b/src/com/android/launcher3/touch/WorkspaceTouchListener.java
index 4fa658e..20d2ad3 100644
--- a/src/com/android/launcher3/touch/WorkspaceTouchListener.java
+++ b/src/com/android/launcher3/touch/WorkspaceTouchListener.java
@@ -41,7 +41,6 @@
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.TestProtocol;
-import com.android.launcher3.views.OptionsPopupView;
 
 /**
  * Helper class to handle touch on empty space in workspace and show options popup on long press
@@ -175,7 +174,7 @@
                 mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
                         HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
                 mLauncher.getStatsLogManager().logger().log(LAUNCHER_WORKSPACE_LONGPRESS);
-                OptionsPopupView.showDefaultOptions(mLauncher, mTouchDownPoint.x, mTouchDownPoint.y);
+                mLauncher.showDefaultOptions(mTouchDownPoint.x, mTouchDownPoint.y);
             } else {
                 cancelLongPress();
             }
diff --git a/src/com/android/launcher3/util/FlingAnimation.java b/src/com/android/launcher3/util/FlingAnimation.java
index c9aa51c..ac864e9 100644
--- a/src/com/android/launcher3/util/FlingAnimation.java
+++ b/src/com/android/launcher3/util/FlingAnimation.java
@@ -1,12 +1,14 @@
 package com.android.launcher3.util;
 
 import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.anim.AnimatorListeners.forEndCallback;
 
 import android.animation.TimeInterpolator;
 import android.animation.ValueAnimator;
 import android.animation.ValueAnimator.AnimatorUpdateListener;
 import android.graphics.PointF;
 import android.graphics.Rect;
+import android.graphics.RectF;
 import android.view.animation.AnimationUtils;
 import android.view.animation.DecelerateInterpolator;
 
@@ -35,7 +37,7 @@
     protected final float mUX, mUY;
 
     protected Rect mIconRect;
-    protected Rect mFrom;
+    protected RectF mFrom;
     protected int mDuration;
     protected float mAnimationTimeFraction;
 
@@ -55,17 +57,17 @@
     @Override
     public void run() {
         mIconRect = mDropTarget.getIconRect(mDragObject);
+        mDragObject.dragView.cancelAnimation();
+        mDragObject.dragView.requestLayout();
 
         // Initiate from
-        mFrom = new Rect();
-        mDragLayer.getViewRectRelativeToSelf(mDragObject.dragView, mFrom);
-        float scale = mDragObject.dragView.getScaleX();
-        float xOffset = ((scale - 1f) * mDragObject.dragView.getMeasuredWidth()) / 2f;
-        float yOffset = ((scale - 1f) * mDragObject.dragView.getMeasuredHeight()) / 2f;
-        mFrom.left += xOffset;
-        mFrom.right -= xOffset;
-        mFrom.top += yOffset;
-        mFrom.bottom -= yOffset;
+        Rect from = new Rect();
+        mDragLayer.getViewRectRelativeToSelf(mDragObject.dragView, from);
+
+        mFrom = new RectF(from);
+        mFrom.inset(
+                ((1 - mDragObject.dragView.getScaleX()) * from.width()) / 2f,
+                ((1 - mDragObject.dragView.getScaleY()) * from.height()) / 2f);
         mDuration = Math.abs(mUY) > Math.abs(mUX) ? initFlingUpDuration() : initFlingLeftDuration();
 
         mAnimationTimeFraction = ((float) mDuration) / (mDuration + DRAG_END_DELAY);
@@ -95,17 +97,15 @@
             }
         };
 
-        Runnable onAnimationEndRunnable = new Runnable() {
-            @Override
-            public void run() {
-                mLauncher.getStateManager().goToState(NORMAL);
-                mDropTarget.completeDrop(mDragObject);
-            }
-        };
-
         mDropTarget.onDrop(mDragObject, mDragOptions);
-        mDragLayer.animateView(mDragObject.dragView, this, duration, tInterpolator,
-                onAnimationEndRunnable, DragLayer.ANIMATION_END_DISAPPEAR, null);
+        ValueAnimator anim = ValueAnimator.ofFloat(0, 1);
+        anim.setDuration(duration).setInterpolator(tInterpolator);
+        anim.addUpdateListener(this);
+        anim.addListener(forEndCallback(() -> {
+            mLauncher.getStateManager().goToState(NORMAL);
+            mDropTarget.completeDrop(mDragObject);
+        }));
+        mDragLayer.playDropAnimation(mDragObject.dragView, anim, DragLayer.ANIMATION_END_DISAPPEAR);
     }
 
     /**
@@ -129,7 +129,7 @@
         }
         double t = (-mUY - Math.sqrt(d)) / mAY;
 
-        float sX = -mFrom.exactCenterX() + mIconRect.exactCenterX();
+        float sX = -mFrom.centerX() + mIconRect.exactCenterX();
 
         // Find horizontal acceleration such that: u*t + a*t*t/2 = s
         mAX = (float) ((sX - t * mUX) * 2 / (t * t));
@@ -157,7 +157,7 @@
         }
         double t = (-mUX - Math.sqrt(d)) / mAX;
 
-        float sY = -mFrom.exactCenterY() + mIconRect.exactCenterY();
+        float sY = -mFrom.centerY() + mIconRect.exactCenterY();
 
         // Find vertical acceleration such that: u*t + a*t*t/2 = s
         mAY = (float) ((sY - t * mUY) * 2 / (t * t));
diff --git a/src/com/android/launcher3/util/HorizontalInsettableView.java b/src/com/android/launcher3/util/HorizontalInsettableView.java
new file mode 100644
index 0000000..7979bc0
--- /dev/null
+++ b/src/com/android/launcher3/util/HorizontalInsettableView.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.util;
+
+/**
+ * Allows the implementing view to add insets to the left and right.
+ */
+public interface HorizontalInsettableView {
+
+    /**
+     * Sets left and right insets for the view so it looks like the width of the view is
+     * reduced when inset is increased.
+     *
+     * The inset is calculated based on the width of the view: e.g. when the width of
+     * the view is 100px then if we apply 0.15f horizontal inset percentage the rendered width
+     * of the view will be 70px with 15px of padding on the left and right sides.
+     *
+     * @param insetPercentage width percentage to inset the content from the left and from the right
+     */
+    void setHorizontalInsets(float insetPercentage);
+
+}
diff --git a/src/com/android/launcher3/util/IntArray.java b/src/com/android/launcher3/util/IntArray.java
index 7252f7a..e7235e7 100644
--- a/src/com/android/launcher3/util/IntArray.java
+++ b/src/com/android/launcher3/util/IntArray.java
@@ -17,13 +17,14 @@
 package com.android.launcher3.util;
 
 import java.util.Arrays;
+import java.util.Iterator;
 import java.util.StringTokenizer;
 
 /**
  * Copy of the platform hidden implementation of android.util.IntArray.
  * Implements a growing array of int primitives.
  */
-public class IntArray implements Cloneable {
+public class IntArray implements Cloneable, Iterable<Integer> {
     private static final int MIN_CAPACITY_INCREMENT = 12;
 
     private static final int[] EMPTY_INT = new int[0];
@@ -272,4 +273,30 @@
             throw new ArrayIndexOutOfBoundsException("length=" + len + "; index=" + index);
         }
     }
+
+    @Override
+    public Iterator<Integer> iterator() {
+        return new ValueIterator();
+    }
+
+    @Thunk
+    class ValueIterator implements Iterator<Integer> {
+
+        private int mNextIndex = 0;
+
+        @Override
+        public boolean hasNext() {
+            return mNextIndex < size();
+        }
+
+        @Override
+        public Integer next() {
+            return get(mNextIndex++);
+        }
+
+        @Override
+        public void remove() {
+            throw new UnsupportedOperationException();
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/com/android/launcher3/util/IntSet.java b/src/com/android/launcher3/util/IntSet.java
index 851f129..4fd06fe 100644
--- a/src/com/android/launcher3/util/IntSet.java
+++ b/src/com/android/launcher3/util/IntSet.java
@@ -16,11 +16,13 @@
 package com.android.launcher3.util;
 
 import java.util.Arrays;
+import java.util.Iterator;
 
 /**
  * A wrapper over IntArray implementing a growing set of int primitives.
+ * The elements in the array are sorted in ascending order.
  */
-public class IntSet {
+public class IntSet implements Iterable<Integer> {
 
     final IntArray mArray = new IntArray();
 
@@ -34,6 +36,25 @@
         }
     }
 
+    /**
+     * Appends the specified IntSet's values to the set if they does not exist, then returns the
+     * original set that now also contains the new values.
+     */
+    public IntSet addAll(IntSet other) {
+        other.forEach(this::add);
+        return this;
+    }
+
+    /**
+     * Removes the specified value from the set if it exist.
+     */
+    public void remove(int value) {
+        int index = Arrays.binarySearch(mArray.mValues, 0, mArray.mSize, value);
+        if (index >= 0) {
+            mArray.removeIndex(index);
+        }
+    }
+
     public boolean contains(int value) {
         return Arrays.binarySearch(mArray.mValues, 0, mArray.mSize, value) >= 0;
     }
@@ -61,6 +82,9 @@
         return (obj instanceof IntSet) && ((IntSet) obj).mArray.equals(mArray);
     }
 
+    /**
+     * Returns the wrapped IntArray. The elements in the array are sorted in ascending order.
+     */
     public IntArray getArray() {
         return mArray;
     }
@@ -78,4 +102,30 @@
         Arrays.sort(set.mArray.mValues, 0, set.mArray.mSize);
         return set;
     }
+
+    /**
+     * Returns an IntSet with the given values.
+     */
+    public static IntSet wrap(int... array) {
+        return wrap(IntArray.wrap(array));
+    }
+
+    /**
+     * Returns an IntSet with the given values.
+     */
+    public static IntSet wrap(Iterable<Integer> iterable) {
+        IntSet set = new IntSet();
+        iterable.forEach(set::add);
+        return set;
+    }
+
+    @Override
+    public Iterator<Integer> iterator() {
+        return mArray.iterator();
+    }
+
+    @Override
+    public String toString() {
+        return "IntSet{" + mArray.toConcatString() + '}';
+    }
 }
diff --git a/src/com/android/launcher3/util/ItemInfoMatcher.java b/src/com/android/launcher3/util/ItemInfoMatcher.java
index 354609d..e8ba28f 100644
--- a/src/com/android/launcher3/util/ItemInfoMatcher.java
+++ b/src/com/android/launcher3/util/ItemInfoMatcher.java
@@ -23,6 +23,7 @@
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.shortcuts.ShortcutKey;
 
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
 
@@ -89,4 +90,13 @@
     static ItemInfoMatcher ofItemIds(IntSet ids) {
         return (info, cn) -> ids.contains(info.id);
     }
+
+    /**
+     * Returns a matcher for items with provided items
+     */
+    static ItemInfoMatcher ofItems(Collection<? extends ItemInfo> items) {
+        IntSet ids = new IntSet();
+        items.forEach(item -> ids.add(item.id));
+        return ofItemIds(ids);
+    }
 }
diff --git a/src/com/android/launcher3/util/LauncherBindableItemsContainer.java b/src/com/android/launcher3/util/LauncherBindableItemsContainer.java
new file mode 100644
index 0000000..a4cb30a
--- /dev/null
+++ b/src/com/android/launcher3/util/LauncherBindableItemsContainer.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.util;
+
+import android.graphics.drawable.Drawable;
+import android.view.View;
+
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.folder.Folder;
+import com.android.launcher3.folder.FolderIcon;
+import com.android.launcher3.graphics.PreloadIconDrawable;
+import com.android.launcher3.model.data.FolderInfo;
+import com.android.launcher3.model.data.ItemInfo;
+import com.android.launcher3.model.data.LauncherAppWidgetInfo;
+import com.android.launcher3.model.data.WorkspaceItemInfo;
+import com.android.launcher3.views.ActivityContext;
+import com.android.launcher3.widget.PendingAppWidgetHostView;
+
+import java.util.HashSet;
+import java.util.List;
+
+/**
+ * Interface representing a container which can bind Launcher items with some utility methods
+ */
+public interface LauncherBindableItemsContainer {
+
+    /**
+     * Called to update workspace items as a result of
+     * {@link com.android.launcher3.model.BgDataModel.Callbacks#bindWorkspaceItemsChanged(List)}
+     */
+    default void updateWorkspaceItems(List<WorkspaceItemInfo> shortcuts, ActivityContext context) {
+        final HashSet<WorkspaceItemInfo> updates = new HashSet<>(shortcuts);
+        ItemOperator op = (info, v) -> {
+            if (v instanceof BubbleTextView && updates.contains(info)) {
+                WorkspaceItemInfo si = (WorkspaceItemInfo) info;
+                BubbleTextView shortcut = (BubbleTextView) v;
+                Drawable oldIcon = shortcut.getIcon();
+                boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable)
+                        && ((PreloadIconDrawable) oldIcon).hasNotCompleted();
+                shortcut.applyFromWorkspaceItem(si, si.isPromise() != oldPromiseState);
+            } else if (info instanceof FolderInfo && v instanceof FolderIcon) {
+                ((FolderIcon) v).updatePreviewItems(updates::contains);
+            }
+
+            // Iterate all items
+            return false;
+        };
+
+        mapOverItems(op);
+        Folder openFolder = Folder.getOpen(context);
+        if (openFolder != null) {
+            openFolder.iterateOverItems(op);
+        }
+    }
+
+    /**
+     * Called to update restored items as a result of
+     * {@link com.android.launcher3.model.BgDataModel.Callbacks#bindRestoreItemsChange(HashSet)}}
+     */
+    default void updateRestoreItems(final HashSet<ItemInfo> updates, ActivityContext context) {
+        ItemOperator op = (info, v) -> {
+            if (info instanceof WorkspaceItemInfo && v instanceof BubbleTextView
+                    && updates.contains(info)) {
+                ((BubbleTextView) v).applyLoadingState(false /* promiseStateChanged */);
+            } else if (v instanceof PendingAppWidgetHostView
+                    && info instanceof LauncherAppWidgetInfo
+                    && updates.contains(info)) {
+                ((PendingAppWidgetHostView) v).applyState();
+            } else if (v instanceof FolderIcon && info instanceof FolderInfo) {
+                ((FolderIcon) v).updatePreviewItems(updates::contains);
+            }
+            // process all the shortcuts
+            return false;
+        };
+
+        mapOverItems(op);
+        Folder folder = Folder.getOpen(context);
+        if (folder != null) {
+            folder.iterateOverItems(op);
+        }
+    }
+
+    /**
+     * Map the operator over the shortcuts and widgets.
+     *
+     * @param op the operator to map over the shortcuts
+     */
+    void mapOverItems(ItemOperator op);
+
+    interface ItemOperator {
+        /**
+         * Process the next itemInfo, possibly with side-effect on the next item.
+         *
+         * @param info info for the shortcut
+         * @param view view for the shortcut
+         * @return true if done, false to continue the map
+         */
+        boolean evaluate(ItemInfo info, View view);
+    }
+}
diff --git a/src/com/android/launcher3/util/MultiValueAlpha.java b/src/com/android/launcher3/util/MultiValueAlpha.java
index 5be9529..8591872 100644
--- a/src/com/android/launcher3/util/MultiValueAlpha.java
+++ b/src/com/android/launcher3/util/MultiValueAlpha.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3.util;
 
+import android.animation.Animator;
+import android.animation.ObjectAnimator;
 import android.util.FloatProperty;
 import android.view.View;
 
@@ -121,5 +123,12 @@
         public String toString() {
             return Float.toString(mValue);
         }
+
+        /**
+         * Creates and returns an Animator from the current value to the given value.
+         */
+        public Animator animateToValue(float value) {
+            return ObjectAnimator.ofFloat(this, VALUE, value);
+        }
     }
 }
diff --git a/src/com/android/launcher3/util/OnboardingPrefs.java b/src/com/android/launcher3/util/OnboardingPrefs.java
index 40bc9c3..cf1467a 100644
--- a/src/com/android/launcher3/util/OnboardingPrefs.java
+++ b/src/com/android/launcher3/util/OnboardingPrefs.java
@@ -38,6 +38,7 @@
     public static final String HOTSEAT_LONGPRESS_TIP_SEEN = "launcher.hotseat_longpress_tip_seen";
     public static final String SEARCH_EDU_SEEN = "launcher.search_edu_seen";
     public static final String SEARCH_SNACKBAR_COUNT = "launcher.keyboard_snackbar_count";
+    public static final String TASKBAR_EDU_SEEN = "launcher.taskbar_edu_seen";
 
     /**
      * Events that either have happened or have not (booleans).
@@ -45,7 +46,8 @@
     @StringDef(value = {
             HOME_BOUNCE_SEEN,
             HOTSEAT_LONGPRESS_TIP_SEEN,
-            SEARCH_EDU_SEEN
+            SEARCH_EDU_SEEN,
+            TASKBAR_EDU_SEEN
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface EventBoolKey {
diff --git a/src/com/android/launcher3/util/SplitConfigurationOptions.java b/src/com/android/launcher3/util/SplitConfigurationOptions.java
index 573c8bd..1f1db9d 100644
--- a/src/com/android/launcher3/util/SplitConfigurationOptions.java
+++ b/src/com/android/launcher3/util/SplitConfigurationOptions.java
@@ -18,6 +18,8 @@
 
 import static java.lang.annotation.RetentionPolicy.SOURCE;
 
+import android.graphics.Rect;
+
 import androidx.annotation.IntDef;
 
 import java.lang.annotation.Retention;
@@ -82,4 +84,25 @@
             mStageType = stageType;
         }
     }
+
+    public static class StagedSplitBounds {
+        public final Rect mLeftTopBounds;
+        public final Rect mRightBottomBounds;
+        public final Rect mDividerBounds;
+
+
+        public StagedSplitBounds(Rect leftTopBounds, Rect rightBottomBounds, Rect dividerBounds) {
+            mLeftTopBounds = leftTopBounds;
+            mRightBottomBounds = rightBottomBounds;
+            mDividerBounds = dividerBounds;
+        }
+    }
+
+    public static class StagedSplitTaskPosition {
+        public int taskId = -1;
+        @StagePosition
+        public int stagePosition = STAGE_POSITION_UNDEFINED;
+        @StageType
+        public int stageType = STAGE_TYPE_UNDEFINED;
+    }
 }
diff --git a/src/com/android/launcher3/util/ViewOnDrawExecutor.java b/src/com/android/launcher3/util/ViewOnDrawExecutor.java
index 82e24c2..5d90291 100644
--- a/src/com/android/launcher3/util/ViewOnDrawExecutor.java
+++ b/src/com/android/launcher3/util/ViewOnDrawExecutor.java
@@ -16,28 +16,21 @@
 
 package com.android.launcher3.util;
 
-import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
-
-import android.os.Process;
 import android.view.View;
 import android.view.View.OnAttachStateChangeListener;
 import android.view.ViewTreeObserver.OnDrawListener;
 
-import androidx.annotation.VisibleForTesting;
-
 import com.android.launcher3.Launcher;
 
-import java.util.ArrayList;
-import java.util.concurrent.Executor;
 import java.util.function.Consumer;
 
 /**
  * An executor which runs all the tasks after the first onDraw is called on the target view.
  */
-public class ViewOnDrawExecutor implements Executor, OnDrawListener, Runnable,
+public class ViewOnDrawExecutor implements OnDrawListener, Runnable,
         OnAttachStateChangeListener {
 
-    private final ArrayList<Runnable> mTasks = new ArrayList<>();
+    private final RunnableList mTasks;
 
     private Consumer<ViewOnDrawExecutor> mOnClearCallback;
     private View mAttachedView;
@@ -46,22 +39,16 @@
     private boolean mLoadAnimationCompleted;
     private boolean mFirstDrawCompleted;
 
-    public void attachTo(Launcher launcher) {
-        attachTo(launcher.getWorkspace(), true /* waitForLoadAnimation */,
-                launcher::clearPendingExecutor);
+    private boolean mCancelled;
+
+    public ViewOnDrawExecutor(RunnableList tasks) {
+        mTasks = tasks;
     }
 
-    /**
-     * Attached the executor to the existence of the view
-     */
-    public void attachTo(View attachedView, boolean waitForLoadAnimation,
-            Consumer<ViewOnDrawExecutor> onClearCallback) {
-        mOnClearCallback = onClearCallback;
-        mAttachedView = attachedView;
+    public void attachTo(Launcher launcher) {
+        mOnClearCallback = launcher::clearPendingExecutor;
+        mAttachedView = launcher.getWorkspace();
         mAttachedView.addOnAttachStateChangeListener(this);
-        if (!waitForLoadAnimation) {
-            mLoadAnimationCompleted = true;
-        }
 
         if (mAttachedView.isAttachedToWindow()) {
             attachObserver();
@@ -75,12 +62,6 @@
     }
 
     @Override
-    public void execute(Runnable command) {
-        mTasks.add(command);
-        MODEL_EXECUTOR.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
-    }
-
-    @Override
     public void onViewAttachedToWindow(View v) {
         attachObserver();
     }
@@ -105,12 +86,17 @@
     public void run() {
         // Post the pending tasks after both onDraw and onLoadAnimationCompleted have been called.
         if (mLoadAnimationCompleted && mFirstDrawCompleted && !mCompleted) {
-            runAllTasks();
+            markCompleted();
         }
     }
 
+    /**
+     * Executes all tasks immediately
+     */
     public void markCompleted() {
-        mTasks.clear();
+        if (!mCancelled) {
+            mTasks.executeAllAndDestroy();
+        }
         mCompleted = true;
         if (mAttachedView != null) {
             mAttachedView.getViewTreeObserver().removeOnDrawListener(this);
@@ -119,21 +105,10 @@
         if (mOnClearCallback != null) {
             mOnClearCallback.accept(this);
         }
-        MODEL_EXECUTOR.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT);
     }
 
-    protected boolean isCompleted() {
-        return mCompleted;
-    }
-
-    /**
-     * Executes all tasks immediately
-     */
-    @VisibleForTesting
-    public void runAllTasks() {
-        for (final Runnable r : mTasks) {
-            r.run();
-        }
+    public void cancel() {
+        mCancelled = true;
         markCompleted();
     }
 }
diff --git a/src/com/android/launcher3/util/WallpaperOffsetInterpolator.java b/src/com/android/launcher3/util/WallpaperOffsetInterpolator.java
index b8554e4..c51f66f 100644
--- a/src/com/android/launcher3/util/WallpaperOffsetInterpolator.java
+++ b/src/com/android/launcher3/util/WallpaperOffsetInterpolator.java
@@ -63,31 +63,37 @@
      *
      * TODO: do different behavior if it's  a live wallpaper?
      */
-    private void wallpaperOffsetForScroll(int scroll, int numScrollingPages, final int[] out) {
+    private void wallpaperOffsetForScroll(int scroll, int numScrollableScreens, final int[] out) {
         out[1] = 1;
 
         // To match the default wallpaper behavior in the system, we default to either the left
         // or right edge on initialization
-        if (mLockedToDefaultPage || numScrollingPages <= 1) {
+        if (mLockedToDefaultPage || numScrollableScreens <= 1) {
             out[0] =  mIsRtl ? 1 : 0;
             return;
         }
 
         // Distribute the wallpaper parallax over a minimum of MIN_PARALLAX_PAGE_SPAN workspace
         // screens, not including the custom screen, and empty screens (if > MIN_PARALLAX_PAGE_SPAN)
-        int numPagesForWallpaperParallax = mWallpaperIsLiveWallpaper ? numScrollingPages :
-                        Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages);
+        int numScreensForWallpaperParallax = mWallpaperIsLiveWallpaper ? numScrollableScreens :
+                        Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollableScreens);
 
         // Offset by the custom screen
-        int leftPageIndex;
-        int rightPageIndex;
-        if (mIsRtl) {
-            rightPageIndex = 0;
-            leftPageIndex = rightPageIndex + numScrollingPages - 1;
-        } else {
-            leftPageIndex = 0;
-            rightPageIndex = leftPageIndex + numScrollingPages - 1;
-        }
+
+        // Don't confuse screens & pages in this function. In a phone UI, we often use screens &
+        // pages interchangeably. However, in a n-panels UI, where n > 1, the screen in this class
+        // means the scrollable screen. Each screen can consist of at most n panels.
+        // Each panel has at most 1 page. Take 5 pages in 2 panels UI as an example, the Workspace
+        // looks as follow:
+        //
+        // S: scrollable screen, P: page, <E>: empty
+        //   S0        S1         S2
+        // _______   _______   ________
+        // |P0|P1|   |P2|P3|   |P4|<E>|
+        // ¯¯¯¯¯¯¯   ¯¯¯¯¯¯¯   ¯¯¯¯¯¯¯¯
+        int endIndex = getNumPagesExcludingEmpty() - 1;
+        final int leftPageIndex = mIsRtl ? endIndex : 0;
+        final int rightPageIndex = mIsRtl ? 0 : endIndex;
 
         // Calculate the scroll range
         int leftPageScrollX = mWorkspace.getScrollForPage(leftPageIndex);
@@ -103,34 +109,56 @@
         int adjustedScroll = scroll - leftPageScrollX -
                 mWorkspace.getLayoutTransitionOffsetForPage(0);
         adjustedScroll = Utilities.boundToRange(adjustedScroll, 0, scrollRange);
-        out[1] = (numPagesForWallpaperParallax - 1) * scrollRange;
+        out[1] = (numScreensForWallpaperParallax - 1) * scrollRange;
 
         // The offset is now distributed 0..1 between the left and right pages that we care about,
         // so we just map that between the pages that we are using for parallax
         int rtlOffset = 0;
         if (mIsRtl) {
             // In RTL, the pages are right aligned, so adjust the offset from the end
-            rtlOffset = out[1] - (numScrollingPages - 1) * scrollRange;
+            rtlOffset = out[1] - (numScrollableScreens - 1) * scrollRange;
         }
-        out[0] = rtlOffset + adjustedScroll * (numScrollingPages - 1);
+        out[0] = rtlOffset + adjustedScroll * (numScrollableScreens - 1);
     }
 
     public float wallpaperOffsetForScroll(int scroll) {
-        wallpaperOffsetForScroll(scroll, getNumScreensExcludingEmpty(), sTempInt);
+        wallpaperOffsetForScroll(scroll, getNumScrollableScreensExcludingEmpty(), sTempInt);
         return ((float) sTempInt[0]) / sTempInt[1];
     }
 
-    private int getNumScreensExcludingEmpty() {
-        int numScrollingPages = mWorkspace.getChildCount();
-        if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && mWorkspace.hasExtraEmptyScreen()) {
-            return numScrollingPages - 1;
+    /**
+     * Returns the number of screens that can be scrolled.
+     *
+     * <p>In an usual phone UI, the number of scrollable screens is equal to the number of
+     * CellLayouts because each screen has exactly 1 CellLayout.
+     *
+     * <p>In a n-panels UI, a screen shows n panels. Each panel has at most 1 CellLayout. Take
+     * 2-panels UI as an example: let's say there are 5 CellLayouts in the Workspace. the number of
+     * scrollable screens will be 3 = ⌈5 / 2⌉.
+     */
+    private int getNumScrollableScreensExcludingEmpty() {
+        float numOfPages = getNumPagesExcludingEmpty();
+        return (int) Math.ceil(numOfPages / mWorkspace.getPanelCount());
+    }
+
+    /**
+     * Returns the number of non-empty pages in the Workspace.
+     *
+     * <p>If a user starts dragging on the rightmost (or leftmost in RTL), an empty CellLayout is
+     * added to the Workspace. This empty CellLayout add as a hover-over target for adding a new
+     * page. To avoid janky motion effect, we ignore this empty CellLayout.
+     */
+    private int getNumPagesExcludingEmpty() {
+        int numOfPages = mWorkspace.getChildCount();
+        if (numOfPages >= MIN_PARALLAX_PAGE_SPAN && mWorkspace.hasExtraEmptyScreen()) {
+            return numOfPages - 1;
         } else {
-            return numScrollingPages;
+            return numOfPages;
         }
     }
 
     public void syncWithScroll() {
-        int numScreens = getNumScreensExcludingEmpty();
+        int numScreens = getNumScrollableScreensExcludingEmpty();
         wallpaperOffsetForScroll(mWorkspace.getScrollX(), numScreens, sTempInt);
         Message msg = Message.obtain(mHandler, MSG_UPDATE_OFFSET, sTempInt[0], sTempInt[1],
                 mWindowToken);
diff --git a/src/com/android/launcher3/views/AbstractSlideInView.java b/src/com/android/launcher3/views/AbstractSlideInView.java
index 92ca8a1..8ac40b8 100644
--- a/src/com/android/launcher3/views/AbstractSlideInView.java
+++ b/src/com/android/launcher3/views/AbstractSlideInView.java
@@ -28,6 +28,7 @@
 import android.util.Property;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.animation.Interpolator;
 
 import com.android.launcher3.AbstractFloatingView;
@@ -68,7 +69,7 @@
     protected final SingleAxisSwipeDetector mSwipeDetector;
     protected final ObjectAnimator mOpenCloseAnimator;
 
-    protected View mContent;
+    protected ViewGroup mContent;
     protected final View mColorScrim;
     protected Interpolator mScrollInterpolator;
 
diff --git a/src/com/android/launcher3/views/ActivityContext.java b/src/com/android/launcher3/views/ActivityContext.java
index 646b669..b95904e 100644
--- a/src/com/android/launcher3/views/ActivityContext.java
+++ b/src/com/android/launcher3/views/ActivityContext.java
@@ -21,9 +21,12 @@
 import android.view.LayoutInflater;
 import android.view.View.AccessibilityDelegate;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.dot.DotInfo;
 import com.android.launcher3.dragndrop.DragController;
+import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.util.ViewCache;
 
@@ -100,6 +103,13 @@
     }
 
     /**
+     * Returns the FolderIcon with the given item id, if it exists.
+     */
+    default @Nullable FolderIcon findFolderIcon(final int folderIconId) {
+        return null;
+    }
+
+    /**
      * Returns the ActivityContext associated with the given Context.
      */
     static <T extends Context & ActivityContext> T lookupContext(Context context) {
diff --git a/src/com/android/launcher3/views/BaseDragLayer.java b/src/com/android/launcher3/views/BaseDragLayer.java
index 01c0b56..76dfb3c 100644
--- a/src/com/android/launcher3/views/BaseDragLayer.java
+++ b/src/com/android/launcher3/views/BaseDragLayer.java
@@ -430,18 +430,20 @@
     }
 
     public void getViewRectRelativeToSelf(View v, Rect r) {
+        int[] loc = getViewLocationRelativeToSelf(v);
+        r.set(loc[0], loc[1], loc[0] + v.getMeasuredWidth(), loc[1] + v.getMeasuredHeight());
+    }
+
+    protected int[] getViewLocationRelativeToSelf(View v) {
         int[] loc = new int[2];
         getLocationInWindow(loc);
         int x = loc[0];
         int y = loc[1];
 
         v.getLocationInWindow(loc);
-        int vX = loc[0];
-        int vY = loc[1];
-
-        int left = vX - x;
-        int top = vY - y;
-        r.set(left, top, left + v.getMeasuredWidth(), top + v.getMeasuredHeight());
+        loc[0] -= x;
+        loc[1] -= y;
+        return loc;
     }
 
     @Override
diff --git a/src/com/android/launcher3/views/OptionsPopupView.java b/src/com/android/launcher3/views/OptionsPopupView.java
index ecdd206..257b18f 100644
--- a/src/com/android/launcher3/views/OptionsPopupView.java
+++ b/src/com/android/launcher3/views/OptionsPopupView.java
@@ -176,16 +176,6 @@
         return launcher.findViewById(R.id.popup_container);
     }
 
-    public static void showDefaultOptions(Launcher launcher, float x, float y) {
-        float halfSize = launcher.getResources().getDimension(R.dimen.options_menu_thumb_size) / 2;
-        if (x < 0 || y < 0) {
-            x = launcher.getDragLayer().getWidth() / 2;
-            y = launcher.getDragLayer().getHeight() / 2;
-        }
-        RectF target = new RectF(x - halfSize, y - halfSize, x + halfSize, y + halfSize);
-        show(launcher, target, getOptions(launcher), false);
-    }
-
     /**
      * Returns the list of supported actions
      */
diff --git a/src/com/android/launcher3/views/RecyclerViewFastScroller.java b/src/com/android/launcher3/views/RecyclerViewFastScroller.java
index 1c2534d..2b0f707 100644
--- a/src/com/android/launcher3/views/RecyclerViewFastScroller.java
+++ b/src/com/android/launcher3/views/RecyclerViewFastScroller.java
@@ -40,7 +40,6 @@
 import android.view.WindowInsets;
 import android.widget.TextView;
 
-import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.recyclerview.widget.RecyclerView;
 
@@ -131,7 +130,6 @@
 
     protected BaseRecyclerView mRv;
     private RecyclerView.OnScrollListener mOnScrollListener;
-    @Nullable private OnFastScrollChangeListener mOnFastScrollChangeListener;
 
     private int mDownX;
     private int mDownY;
@@ -208,7 +206,6 @@
             int rvCurrentOffsetY = mRv.getCurrentScrollY();
             if (mRvOffsetY != rvCurrentOffsetY) {
                 mRvOffsetY = mRv.getCurrentScrollY();
-                notifyScrollChanged();
             }
             return;
         }
@@ -216,7 +213,6 @@
         mThumbOffsetY = y;
         invalidate();
         mRvOffsetY = mRv.getCurrentScrollY();
-        notifyScrollChanged();
     }
 
     public int getThumbOffsetY() {
@@ -461,23 +457,4 @@
     public void setIsRecyclerViewFirstChildInParent(boolean isRecyclerViewFirstChildInParent) {
         mIsRecyclerViewFirstChildInParent = isRecyclerViewFirstChildInParent;
     }
-
-    public void setOnFastScrollChangeListener(
-            @Nullable OnFastScrollChangeListener onFastScrollChangeListener) {
-        mOnFastScrollChangeListener = onFastScrollChangeListener;
-    }
-
-    private void notifyScrollChanged() {
-        if (mOnFastScrollChangeListener != null) {
-            mOnFastScrollChangeListener.onScrollChanged();
-        }
-    }
-
-    /**
-     * A callback that is invoked when there is a scroll change in {@link RecyclerViewFastScroller}.
-     */
-    public interface OnFastScrollChangeListener {
-        /** Called when the recycler view scroll has changed. */
-        void onScrollChanged();
-    }
 }
diff --git a/src/com/android/launcher3/views/ScrimView.java b/src/com/android/launcher3/views/ScrimView.java
index 1eb79ad..4c0bfde 100644
--- a/src/com/android/launcher3/views/ScrimView.java
+++ b/src/com/android/launcher3/views/ScrimView.java
@@ -25,23 +25,27 @@
 import android.util.AttributeSet;
 import android.view.View;
 
+import androidx.annotation.NonNull;
 import androidx.core.graphics.ColorUtils;
 
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.util.SystemUiController;
 
+import java.util.ArrayList;
+
 /**
  * Simple scrim which draws a flat color
  */
 public class ScrimView extends View implements Insettable {
     private static final float STATUS_BAR_COLOR_FORCE_UPDATE_THRESHOLD = 0.9f;
 
+    private final ArrayList<Runnable> mOpaquenessListeners = new ArrayList<>(1);
     private SystemUiController mSystemUiController;
-
     private ScrimDrawingController mDrawingController;
     private int mBackgroundColor;
     private boolean mIsVisible = true;
+    private boolean mLastDispatchedOpaqueness;
 
     public ScrimView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -60,6 +64,7 @@
     @Override
     protected boolean onSetAlpha(int alpha) {
         updateSysUiColors();
+        dispatchVisibilityListenersIfNeeded();
         return super.onSetAlpha(alpha);
     }
 
@@ -67,6 +72,7 @@
     public void setBackgroundColor(int color) {
         mBackgroundColor = color;
         updateSysUiColors();
+        dispatchVisibilityListenersIfNeeded();
         super.setBackgroundColor(color);
     }
 
@@ -74,6 +80,7 @@
     public void onVisibilityAggregated(boolean isVisible) {
         super.onVisibilityAggregated(isVisible);
         mIsVisible = isVisible;
+        dispatchVisibilityListenersIfNeeded();
     }
 
     public boolean isFullyOpaque() {
@@ -108,6 +115,17 @@
         }
     }
 
+    private void dispatchVisibilityListenersIfNeeded() {
+        boolean fullyOpaque = isFullyOpaque();
+        if (mLastDispatchedOpaqueness == fullyOpaque) {
+            return;
+        }
+        mLastDispatchedOpaqueness = fullyOpaque;
+        for (int i = 0; i < mOpaquenessListeners.size(); i++) {
+            mOpaquenessListeners.get(i).run();
+        }
+    }
+
     private SystemUiController getSystemUiController() {
         if (mSystemUiController == null) {
             mSystemUiController = BaseActivity.fromContext(getContext()).getSystemUiController();
@@ -136,6 +154,22 @@
     }
 
     /**
+     * Registers a listener to be notified of whether the scrim is occluding other UI elements.
+     * @see #isFullyOpaque()
+     */
+    public void addOpaquenessListener(@NonNull Runnable listener) {
+        mOpaquenessListeners.add(listener);
+    }
+
+    /**
+     * Removes previously registered listener.
+     * @see #addOpaquenessListener(Runnable)
+     */
+    public void removeOpaquenessListener(@NonNull Runnable listener) {
+        mOpaquenessListeners.remove(listener);
+    }
+
+    /**
      * A Utility interface allowing for other surfaces to draw on ScrimView
      */
     public interface ScrimDrawingController {
diff --git a/src/com/android/launcher3/views/TopRoundedCornerView.java b/src/com/android/launcher3/views/TopRoundedCornerView.java
deleted file mode 100644
index 92cce92..0000000
--- a/src/com/android/launcher3/views/TopRoundedCornerView.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.views;
-
-import android.content.Context;
-import android.graphics.Canvas;
-import android.graphics.Path;
-import android.graphics.RectF;
-import android.util.AttributeSet;
-
-import com.android.launcher3.util.Themes;
-
-/**
- * View with top rounded corners.
- */
-public class TopRoundedCornerView extends SpringRelativeLayout {
-
-    private final RectF mRect = new RectF();
-    private final Path mClipPath = new Path();
-    private float[] mRadii;
-
-    public TopRoundedCornerView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-
-        float radius = Themes.getDialogCornerRadius(context);
-        mRadii = new float[] {radius, radius, radius, radius, 0, 0, 0, 0};
-    }
-
-    public TopRoundedCornerView(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
-    }
-
-    @Override
-    public void draw(Canvas canvas) {
-        canvas.save();
-        canvas.clipPath(mClipPath);
-        super.draw(canvas);
-        canvas.restore();
-    }
-
-    @Override
-    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
-        mRect.set(0, 0, getMeasuredWidth(), getMeasuredHeight());
-        mClipPath.reset();
-        mClipPath.addRoundRect(mRect, mRadii, Path.Direction.CW);
-    }
-}
diff --git a/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java b/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java
index 1cc7f53..d2d569f 100644
--- a/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java
+++ b/src/com/android/launcher3/widget/AddItemWidgetsBottomSheet.java
@@ -18,6 +18,7 @@
 
 import static com.android.launcher3.Utilities.ATLEAST_R;
 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
+import static com.android.launcher3.widget.BaseWidgetSheet.MAX_WIDTH_SCALE_FOR_LARGER_SCREEN;
 
 import android.animation.PropertyValuesHolder;
 import android.annotation.SuppressLint;
@@ -25,10 +26,12 @@
 import android.graphics.Insets;
 import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewParent;
 import android.view.WindowInsets;
+import android.widget.ScrollView;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
@@ -44,6 +47,9 @@
     private static final int DEFAULT_CLOSE_DURATION = 200;
 
     private final Rect mInsets;
+    private ScrollView mWidgetPreviewScrollView;
+
+    private int mContentHorizontalMarginInPx;
 
     public AddItemWidgetsBottomSheet(Context context, AttributeSet attrs) {
         this(context, attrs, 0);
@@ -52,6 +58,8 @@
     public AddItemWidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         mInsets = new Rect();
+        mContentHorizontalMarginInPx = getResources().getDimensionPixelSize(
+                R.dimen.widget_list_horizontal_margin);
     }
 
     /**
@@ -68,6 +76,19 @@
     }
 
     @Override
+    public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
+            mNoIntercept = false;
+            // Suppress drag to dismiss gesture if the scroll view is being scrolled.
+            if (getPopupContainer().isEventOverView(mWidgetPreviewScrollView, ev)
+                    && mWidgetPreviewScrollView.getScrollY() > 0) {
+                mNoIntercept = true;
+            }
+        }
+        return super.onControllerInterceptTouchEvent(ev);
+    }
+
+    @Override
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
         int width = r - l;
         int height = b - t;
@@ -93,6 +114,15 @@
                     2 * (mInsets.left + mInsets.right));
         }
 
+        if (deviceProfile.isTablet || deviceProfile.isTwoPanels) {
+            // In large screen devices, we restrict the width of the widgets picker to show part of
+            // the home screen. Let's ensure the minimum width used is at least the minimum width
+            // that isn't taken by the widgets picker.
+            int minUsedWidth = (int) (deviceProfile.availableWidthPx
+                    * (1 - MAX_WIDTH_SCALE_FOR_LARGER_SCREEN));
+            widthUsed = Math.max(widthUsed, minUsedWidth);
+        }
+
         int heightUsed = mInsets.top + deviceProfile.edgeMarginPx;
         measureChildWithMargins(mContent, widthMeasureSpec,
                 widthUsed, heightMeasureSpec, heightUsed);
@@ -104,6 +134,7 @@
     protected void onFinishInflate() {
         super.onFinishInflate();
         mContent = findViewById(R.id.add_item_bottom_sheet_content);
+        mWidgetPreviewScrollView = findViewById(R.id.widget_preview_scroll_view);
     }
 
     private void animateOpen() {
@@ -146,6 +177,26 @@
         }
         mContent.setPadding(mContent.getPaddingStart(),
                 mContent.getPaddingTop(), mContent.getPaddingEnd(), mInsets.bottom);
+
+        int contentHorizontalMarginInPx = getResources().getDimensionPixelSize(
+                R.dimen.widget_list_horizontal_margin);
+        if (contentHorizontalMarginInPx != mContentHorizontalMarginInPx) {
+            setContentHorizontalMargin(findViewById(R.id.widget_appName),
+                    contentHorizontalMarginInPx);
+            setContentHorizontalMargin(findViewById(R.id.widget_drag_instruction),
+                    contentHorizontalMarginInPx);
+            setContentHorizontalMargin(findViewById(R.id.widget_cell), contentHorizontalMarginInPx);
+            setContentHorizontalMargin(findViewById(R.id.actions_container),
+                    contentHorizontalMarginInPx);
+            mContentHorizontalMarginInPx = contentHorizontalMarginInPx;
+        }
         return windowInsets;
     }
+
+    private static void setContentHorizontalMargin(View view, int contentHorizontalMargin) {
+        ViewGroup.MarginLayoutParams layoutParams =
+                ((ViewGroup.MarginLayoutParams) view.getLayoutParams());
+        layoutParams.setMarginStart(contentHorizontalMargin);
+        layoutParams.setMarginEnd(contentHorizontalMargin);
+    }
 }
diff --git a/src/com/android/launcher3/widget/BaseLauncherAppWidgetHostView.java b/src/com/android/launcher3/widget/BaseLauncherAppWidgetHostView.java
new file mode 100644
index 0000000..2742882
--- /dev/null
+++ b/src/com/android/launcher3/widget/BaseLauncherAppWidgetHostView.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.widget;
+
+import android.content.Context;
+import android.graphics.Outline;
+import android.graphics.Rect;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewOutlineProvider;
+import android.widget.RemoteViews;
+
+import androidx.annotation.UiThread;
+
+import com.android.launcher3.R;
+import com.android.launcher3.util.Executors;
+
+/**
+ * Launcher AppWidgetHostView with support for rounded corners and a fallback View.
+ */
+public abstract class BaseLauncherAppWidgetHostView extends NavigableAppWidgetHostView {
+
+    protected final LayoutInflater mInflater;
+
+    private final Rect mEnforcedRectangle = new Rect();
+    private final float mEnforcedCornerRadius;
+    private final ViewOutlineProvider mCornerRadiusEnforcementOutline = new ViewOutlineProvider() {
+        @Override
+        public void getOutline(View view, Outline outline) {
+            if (mEnforcedRectangle.isEmpty() || mEnforcedCornerRadius <= 0) {
+                outline.setEmpty();
+            } else {
+                outline.setRoundRect(mEnforcedRectangle, mEnforcedCornerRadius);
+            }
+        }
+    };
+
+    public BaseLauncherAppWidgetHostView(Context context) {
+        super(context);
+
+        setExecutor(Executors.THREAD_POOL_EXECUTOR);
+
+        mInflater = LayoutInflater.from(context);
+        mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(getContext());
+    }
+
+    @Override
+    protected View getErrorView() {
+        return mInflater.inflate(R.layout.appwidget_error, this, false);
+    }
+
+    /**
+     * Fall back to error layout instead of showing widget.
+     */
+    public void switchToErrorView() {
+        // Update the widget with 0 Layout id, to reset the view to error view.
+        updateAppWidget(new RemoteViews(getAppWidgetInfo().provider.getPackageName(), 0));
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        try {
+            super.onLayout(changed, left, top, right, bottom);
+        } catch (final RuntimeException e) {
+            post(this::switchToErrorView);
+        }
+
+        enforceRoundedCorners();
+    }
+
+    @UiThread
+    private void resetRoundedCorners() {
+        setOutlineProvider(ViewOutlineProvider.BACKGROUND);
+        setClipToOutline(false);
+    }
+
+    @UiThread
+    private void enforceRoundedCorners() {
+        if (mEnforcedCornerRadius <= 0 || !RoundedCornerEnforcement.isRoundedCornerEnabled()) {
+            resetRoundedCorners();
+            return;
+        }
+        View background = RoundedCornerEnforcement.findBackground(this);
+        if (background == null
+                || RoundedCornerEnforcement.hasAppWidgetOptedOut(this, background)) {
+            resetRoundedCorners();
+            return;
+        }
+        RoundedCornerEnforcement.computeRoundedRectangle(this,
+                background,
+                mEnforcedRectangle);
+        setOutlineProvider(mCornerRadiusEnforcementOutline);
+        setClipToOutline(true);
+    }
+
+    /** Returns the corner radius currently enforced, in pixels. */
+    public float getEnforcedCornerRadius() {
+        return mEnforcedCornerRadius;
+    }
+
+    /** Returns true if the corner radius are enforced for this App Widget. */
+    public boolean hasEnforcedCornerRadius() {
+        return getClipToOutline();
+    }
+}
diff --git a/src/com/android/launcher3/widget/BaseWidgetSheet.java b/src/com/android/launcher3/widget/BaseWidgetSheet.java
index 9f0b9d9..b6cec12 100644
--- a/src/com/android/launcher3/widget/BaseWidgetSheet.java
+++ b/src/com/android/launcher3/widget/BaseWidgetSheet.java
@@ -51,6 +51,13 @@
 public abstract class BaseWidgetSheet extends AbstractSlideInView<Launcher>
         implements OnClickListener, OnLongClickListener, DragSource,
         PopupDataProvider.PopupDataChangeListener, Insettable {
+    /** The default number of cells that can fit horizontally in a widget sheet. */
+    protected static final int DEFAULT_MAX_HORIZONTAL_SPANS = 4;
+    /**
+     * The maximum scale, [0, 1], of the device screen width that the widgets picker can consume
+     * on large screen devices.
+     */
+    protected static final float MAX_WIDTH_SCALE_FOR_LARGER_SCREEN = 0.89f;
 
     protected static final String KEY_WIDGETS_EDUCATION_TIP_SEEN =
             "launcher.widgets_education_tip_seen";
@@ -59,8 +66,12 @@
     /* Touch handling related member variables. */
     private Toast mWidgetInstructionToast;
 
+    private int mContentHorizontalMarginInPx;
+
     public BaseWidgetSheet(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
+        mContentHorizontalMarginInPx = getResources().getDimensionPixelSize(
+                R.dimen.widget_list_horizontal_margin);
     }
 
     protected int getScrimColor(Context context) {
@@ -112,8 +123,16 @@
     @Override
     public void setInsets(Rect insets) {
         mInsets.set(insets);
+        int contentHorizontalMarginInPx = getResources().getDimensionPixelSize(
+                R.dimen.widget_list_horizontal_margin);
+        if (contentHorizontalMarginInPx != mContentHorizontalMarginInPx) {
+            onContentHorizontalMarginChanged(contentHorizontalMarginInPx);
+            mContentHorizontalMarginInPx = contentHorizontalMarginInPx;
+        }
     }
 
+    /** Called when the horizontal margin of the content view has changed. */
+    protected abstract void onContentHorizontalMarginChanged(int contentHorizontalMarginInPx);
 
     /**
      * Measures the dimension of this view and its children by taking system insets, navigation bar,
@@ -131,6 +150,15 @@
                     2 * (mInsets.left + mInsets.right));
         }
 
+        if (deviceProfile.isTablet || deviceProfile.isTwoPanels) {
+            // In large screen devices, we restrict the width of the widgets picker to show part of
+            // the home screen. Let's ensure the minimum width used is at least the minimum width
+            // that isn't taken by the widgets picker.
+            int minUsedWidth = (int) (deviceProfile.availableWidthPx
+                    * (1 - MAX_WIDTH_SCALE_FOR_LARGER_SCREEN));
+            widthUsed = Math.max(widthUsed, minUsedWidth);
+        }
+
         int heightUsed = mInsets.top + deviceProfile.edgeMarginPx;
         measureChildWithMargins(mContent, widthMeasureSpec,
                 widthUsed, heightMeasureSpec, heightUsed);
@@ -138,6 +166,17 @@
                 MeasureSpec.getSize(heightMeasureSpec));
     }
 
+    /** Returns the number of cells that can fit horizontally in a given {@code content}. */
+    protected int computeMaxHorizontalSpans(View content, int contentHorizontalPaddingPx) {
+        DeviceProfile deviceProfile = mActivityContext.getDeviceProfile();
+        int availableWidth = content.getMeasuredWidth() - contentHorizontalPaddingPx;
+        Point cellSize = deviceProfile.getCellSize();
+        if (cellSize.x > 0) {
+            return availableWidth / cellSize.x;
+        }
+        return DEFAULT_MAX_HORIZONTAL_SPANS;
+    }
+
     private boolean beginDraggingWidget(WidgetCell v) {
         // Get the widget preview as the drag representation
         WidgetImageView image = v.getWidgetView();
@@ -149,7 +188,9 @@
         }
 
         PendingItemDragHelper dragHelper = new PendingItemDragHelper(v);
-        dragHelper.setRemoteViewsPreview(v.getRemoteViewsPreview());
+        // RemoteViews are being rendered in AppWidgetHostView in WidgetCell. And thus, the scale of
+        // RemoteViews is equivalent to the AppWidgetHostView scale.
+        dragHelper.setRemoteViewsPreview(v.getRemoteViewsPreview(), v.getAppWidgetHostViewScale());
         dragHelper.setAppWidgetHostViewPreview(v.getAppWidgetHostViewPreview());
 
         if (image.getDrawable() != null) {
@@ -159,11 +200,11 @@
             dragHelper.startDrag(image.getBitmapBounds(), image.getDrawable().getIntrinsicWidth(),
                     image.getWidth(), new Point(loc[0], loc[1]), this, new DragOptions());
         } else {
-            View preview = v.getAppWidgetHostViewPreview();
+            NavigableAppWidgetHostView preview = v.getAppWidgetHostViewPreview();
             int[] loc = new int[2];
             getPopupContainer().getLocationInDragLayer(preview, loc);
-
-            Rect r = new Rect(0, 0, preview.getWidth(), preview.getHeight());
+            Rect r = new Rect();
+            preview.getWorkspaceVisualDragBounds(r);
             dragHelper.startDrag(r, preview.getMeasuredWidth(), preview.getMeasuredWidth(),
                     new Point(loc[0], loc[1]), this, new DragOptions());
         }
diff --git a/src/com/android/launcher3/widget/CachingWidgetPreviewLoader.java b/src/com/android/launcher3/widget/CachingWidgetPreviewLoader.java
deleted file mode 100644
index afceadd..0000000
--- a/src/com/android/launcher3/widget/CachingWidgetPreviewLoader.java
+++ /dev/null
@@ -1,289 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.widget;
-
-import android.graphics.Bitmap;
-import android.os.CancellationSignal;
-import android.util.Size;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.annotation.UiThread;
-import androidx.collection.ArrayMap;
-import androidx.collection.ArraySet;
-
-import com.android.launcher3.BaseActivity;
-import com.android.launcher3.model.WidgetItem;
-import com.android.launcher3.util.ComponentKey;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.stream.Collectors;
-
-/** Wrapper around {@link DatabaseWidgetPreviewLoader} that contains caching logic. */
-public class CachingWidgetPreviewLoader implements WidgetPreviewLoader {
-
-    @NonNull private final WidgetPreviewLoader mDelegate;
-    @NonNull private final Map<ComponentKey, Map<Size, CacheResult>> mCache = new ArrayMap<>();
-
-    public CachingWidgetPreviewLoader(@NonNull WidgetPreviewLoader delegate) {
-        mDelegate = delegate;
-    }
-
-    /** Returns whether the preview is loaded for the item and size. */
-    public boolean isPreviewLoaded(@NonNull WidgetItem item, @NonNull Size previewSize) {
-        return getPreview(item, previewSize) != null;
-    }
-
-    /** Returns the cached preview for the item and size, or null if there is none. */
-    @Nullable
-    public Bitmap getPreview(@NonNull WidgetItem item, @NonNull Size previewSize) {
-        CacheResult cacheResult = getCacheResult(item, previewSize);
-        if (cacheResult instanceof CacheResult.Loaded) {
-            return ((CacheResult.Loaded) cacheResult).mBitmap;
-        } else {
-            return null;
-        }
-    }
-
-    @NonNull
-    private CacheResult getCacheResult(@NonNull WidgetItem item, @NonNull Size previewSize) {
-        synchronized (mCache) {
-            Map<Size, CacheResult> cacheResults = mCache.get(toComponentKey(item));
-            if (cacheResults == null) {
-                return CacheResult.MISS;
-            }
-
-            return cacheResults.getOrDefault(previewSize, CacheResult.MISS);
-        }
-    }
-
-    /**
-     * Puts the result in the cache for the item and size. Returns the value previously in the
-     * cache, or null if there was none.
-     */
-    @Nullable
-    private CacheResult putCacheResult(
-            @NonNull WidgetItem item,
-            @NonNull Size previewSize,
-            @Nullable CacheResult cacheResult) {
-        ComponentKey key = toComponentKey(item);
-        synchronized (mCache) {
-            Map<Size, CacheResult> cacheResults = mCache.getOrDefault(key, new ArrayMap<>());
-            CacheResult previous;
-            if (cacheResult == null) {
-                previous = cacheResults.remove(previewSize);
-                if (cacheResults.isEmpty()) {
-                    mCache.remove(key);
-                } else {
-                    previous = cacheResults.put(previewSize, cacheResult);
-                    mCache.put(key, cacheResults);
-                }
-            } else {
-                previous = cacheResults.put(previewSize, cacheResult);
-                mCache.put(key, cacheResults);
-            }
-            return previous;
-        }
-    }
-
-    private void removeCacheResult(@NonNull WidgetItem item, @NonNull Size previewSize) {
-        ComponentKey key = toComponentKey(item);
-        synchronized (mCache) {
-            Map<Size, CacheResult> cacheResults = mCache.getOrDefault(key, new ArrayMap<>());
-            cacheResults.remove(previewSize);
-            mCache.put(key, cacheResults);
-        }
-    }
-
-    /**
-     * Gets the preview for the widget item and size, using the value in the cache if stored.
-     *
-     * @return a {@link CancellationSignal}, which can cancel the request before it loads
-     */
-    @Override
-    @UiThread
-    @NonNull
-    public CancellationSignal loadPreview(
-            @NonNull BaseActivity activity, @NonNull WidgetItem item, @NonNull Size previewSize,
-            @NonNull WidgetPreviewLoadedCallback callback) {
-        CancellationSignal signal = new CancellationSignal();
-        signal.setOnCancelListener(() -> {
-            synchronized (mCache) {
-                CacheResult cacheResult = getCacheResult(item, previewSize);
-                if (!(cacheResult instanceof CacheResult.Loading)) {
-                    // If the key isn't actively loading, then this is a no-op. Cancelling loading
-                    // shouldn't clear the cache if we've already loaded.
-                    return;
-                }
-
-                CacheResult.Loading prev = (CacheResult.Loading) cacheResult;
-                CacheResult.Loading updated = prev.withoutCallback(callback);
-
-                if (updated.mCallbacks.isEmpty()) {
-                    // If the last callback was removed, then cancel the underlying request in the
-                    // delegate.
-                    prev.mCancellationSignal.cancel();
-                    removeCacheResult(item, previewSize);
-                } else {
-                    // If there are other callbacks still active, then don't cancel the delegate's
-                    // request, just remove this callback from the set.
-                    putCacheResult(item, previewSize, updated);
-                }
-            }
-        });
-
-        synchronized (mCache) {
-            CacheResult cacheResult = getCacheResult(item, previewSize);
-            if (cacheResult instanceof CacheResult.Loaded) {
-                // If the bitmap is already present in the cache, invoke the callback immediately.
-                callback.onPreviewLoaded(((CacheResult.Loaded) cacheResult).mBitmap);
-                return signal;
-            }
-
-            if (cacheResult instanceof CacheResult.Loading) {
-                // If we're already loading the preview for this key, then just add the callback
-                // to the set we'll call after it loads.
-                CacheResult.Loading prev = (CacheResult.Loading) cacheResult;
-                putCacheResult(item, previewSize, prev.withCallback(callback));
-                return signal;
-            }
-
-            CancellationSignal delegateCancellationSignal =
-                    mDelegate.loadPreview(
-                            activity,
-                            item,
-                            previewSize,
-                            preview -> {
-                                CacheResult prev;
-                                synchronized (mCache) {
-                                    prev = putCacheResult(
-                                            item, previewSize, new CacheResult.Loaded(preview));
-                                }
-                                if (prev instanceof CacheResult.Loading) {
-                                    // Notify each stored callback that the preview has loaded.
-                                    ((CacheResult.Loading) prev).mCallbacks
-                                            .forEach(c -> c.onPreviewLoaded(preview));
-                                } else {
-                                    // If there isn't a loading object in the cache, then we were
-                                    // notified before adding this signal to the cache. Just
-                                    // call back to the provided callback, there can't be others.
-                                    callback.onPreviewLoaded(preview);
-                                }
-                            });
-            ArraySet<WidgetPreviewLoadedCallback> callbacks = new ArraySet<>();
-            callbacks.add(callback);
-            putCacheResult(
-                    item,
-                    previewSize,
-                    new CacheResult.Loading(delegateCancellationSignal, callbacks));
-        }
-
-        return signal;
-    }
-
-    /** Clears all cached previews for {@code items}, cancelling any in-progress preview loading. */
-    public void clearPreviews(Iterable<WidgetItem> items) {
-        List<CacheResult> previousCacheResults = new ArrayList<>();
-        synchronized (mCache) {
-            for (WidgetItem item : items) {
-                Map<Size, CacheResult> previousMap = mCache.remove(toComponentKey(item));
-                if (previousMap != null) {
-                    previousCacheResults.addAll(previousMap.values());
-                }
-            }
-        }
-
-        for (CacheResult previousCacheResult : previousCacheResults) {
-            if (previousCacheResult instanceof CacheResult.Loading) {
-                ((CacheResult.Loading) previousCacheResult).mCancellationSignal.cancel();
-            }
-        }
-    }
-
-    /** Clears all cached previews, cancelling any in-progress preview loading. */
-    public void clearAll() {
-        List<CacheResult> previousCacheResults;
-        synchronized (mCache) {
-            previousCacheResults =
-                    mCache
-                    .values()
-                    .stream()
-                    .flatMap(sizeToResult -> sizeToResult.values().stream())
-                    .collect(Collectors.toList());
-            mCache.clear();
-        }
-
-        for (CacheResult previousCacheResult : previousCacheResults) {
-            if (previousCacheResult instanceof CacheResult.Loading) {
-                ((CacheResult.Loading) previousCacheResult).mCancellationSignal.cancel();
-            }
-        }
-    }
-
-    private abstract static class CacheResult {
-        static final CacheResult MISS = new CacheResult() {};
-
-        static final class Loading extends CacheResult {
-            @NonNull final CancellationSignal mCancellationSignal;
-            @NonNull final Set<WidgetPreviewLoadedCallback> mCallbacks;
-
-            Loading(@NonNull CancellationSignal cancellationSignal,
-                    @NonNull Set<WidgetPreviewLoadedCallback> callbacks) {
-                mCancellationSignal = cancellationSignal;
-                mCallbacks = callbacks;
-            }
-
-            @NonNull
-            Loading withCallback(@NonNull WidgetPreviewLoadedCallback callback) {
-                if (mCallbacks.contains(callback)) return this;
-                Set<WidgetPreviewLoadedCallback> newCallbacks =
-                        new ArraySet<>(mCallbacks.size() + 1);
-                newCallbacks.addAll(mCallbacks);
-                newCallbacks.add(callback);
-                return new Loading(mCancellationSignal, newCallbacks);
-            }
-
-            @NonNull
-            Loading withoutCallback(@NonNull WidgetPreviewLoadedCallback callback) {
-                if (!mCallbacks.contains(callback)) return this;
-                Set<WidgetPreviewLoadedCallback> newCallbacks =
-                        new ArraySet<>(mCallbacks.size() - 1);
-                for (WidgetPreviewLoadedCallback existingCallback : mCallbacks) {
-                    if (!existingCallback.equals(callback)) {
-                        newCallbacks.add(existingCallback);
-                    }
-                }
-                return new Loading(mCancellationSignal, newCallbacks);
-            }
-        }
-
-        static final class Loaded extends CacheResult {
-            @NonNull final Bitmap mBitmap;
-
-            Loaded(@NonNull Bitmap bitmap) {
-                mBitmap = bitmap;
-            }
-        }
-    }
-
-    @NonNull
-    private static ComponentKey toComponentKey(@NonNull WidgetItem item) {
-        return new ComponentKey(item.componentName, item.user);
-    }
-}
diff --git a/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java b/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java
index 4ec7e60..95c3e1e 100644
--- a/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java
+++ b/src/com/android/launcher3/widget/DatabaseWidgetPreviewLoader.java
@@ -16,21 +16,9 @@
 package com.android.launcher3.widget;
 
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
-import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 
-import android.content.ComponentName;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.res.Resources;
-import android.database.Cursor;
-import android.database.SQLException;
-import android.database.sqlite.SQLiteDatabase;
 import android.graphics.Bitmap;
-import android.graphics.Bitmap.Config;
-import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
@@ -39,72 +27,40 @@
 import android.graphics.RectF;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
-import android.os.CancellationSignal;
+import android.os.Handler;
 import android.os.Process;
-import android.os.UserHandle;
 import android.util.Log;
-import android.util.LongSparseArray;
-import android.util.Pair;
 import android.util.Size;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.LauncherFiles;
+import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.icons.GraphicsUtils;
-import com.android.launcher3.icons.IconCache;
+import com.android.launcher3.icons.BitmapRenderer;
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.icons.ShadowGenerator;
+import com.android.launcher3.icons.cache.HandlerRunnable;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.pm.ShortcutConfigActivityInfo;
-import com.android.launcher3.pm.UserCache;
-import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.Executors;
-import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.util.Preconditions;
-import com.android.launcher3.util.SQLiteCacheHelper;
-import com.android.launcher3.util.Thunk;
 import com.android.launcher3.widget.util.WidgetSizes;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.WeakHashMap;
 import java.util.concurrent.ExecutionException;
+import java.util.function.Consumer;
 
-/** {@link WidgetPreviewLoader} that loads preview images from a {@link CacheDb}. */
-public class DatabaseWidgetPreviewLoader implements WidgetPreviewLoader {
+/** Utility class to load widget previews */
+public class DatabaseWidgetPreviewLoader {
 
     private static final String TAG = "WidgetPreviewLoader";
-    private static final boolean DEBUG = false;
 
-    private final HashMap<String, long[]> mPackageVersions = new HashMap<>();
-
-    /**
-     * Weak reference objects, do not prevent their referents from being made finalizable,
-     * finalized, and then reclaimed.
-     * Note: synchronized block used for this variable is expensive and the block should always
-     * be posted to a background thread.
-     */
-    @Thunk final Set<Bitmap> mUnusedBitmaps = Collections.newSetFromMap(new WeakHashMap<>());
-
-    private final Context mContext;
-    private final IconCache mIconCache;
-    private final UserCache mUserCache;
-    private final CacheDb mDb;
+    private final BaseActivity mContext;
     private final float mPreviewBoxCornerRadius;
 
-    public DatabaseWidgetPreviewLoader(Context context, IconCache iconCache) {
+    public DatabaseWidgetPreviewLoader(BaseActivity context) {
         mContext = context;
-        mIconCache = iconCache;
-        mUserCache = UserCache.INSTANCE.get(context);
-        mDb = new CacheDb(context);
         float previewCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
         mPreviewBoxCornerRadius = previewCornerRadius > 0
                 ? previewCornerRadius
@@ -117,251 +73,29 @@
      *
      * @return a request id which can be used to cancel the request.
      */
-    @Override
     @NonNull
-    public CancellationSignal loadPreview(
-            @NonNull BaseActivity activity,
+    public HandlerRunnable loadPreview(
             @NonNull WidgetItem item,
             @NonNull Size previewSize,
-            @NonNull WidgetPreviewLoadedCallback callback) {
-        int previewWidth = previewSize.getWidth();
-        int previewHeight = previewSize.getHeight();
-        String size = previewWidth + "x" + previewHeight;
-        WidgetCacheKey key = new WidgetCacheKey(item.componentName, item.user, size);
-
-        PreviewLoadTask task =
-                new PreviewLoadTask(activity, key, item, previewWidth, previewHeight, callback);
-        task.executeOnExecutor(Executors.THREAD_POOL_EXECUTOR);
-
-        CancellationSignal signal = new CancellationSignal();
-        signal.setOnCancelListener(task);
-        return signal;
-    }
-
-    /** Clears the database storing previews. */
-    public void refresh() {
-        mDb.clear();
-    }
-
-    /**
-     * The DB holds the generated previews for various components. Previews can also have different
-     * sizes (landscape vs portrait).
-     */
-    private static class CacheDb extends SQLiteCacheHelper {
-        private static final int DB_VERSION = 9;
-
-        private static final String TABLE_NAME = "shortcut_and_widget_previews";
-        private static final String COLUMN_COMPONENT = "componentName";
-        private static final String COLUMN_USER = "profileId";
-        private static final String COLUMN_SIZE = "size";
-        private static final String COLUMN_PACKAGE = "packageName";
-        private static final String COLUMN_LAST_UPDATED = "lastUpdated";
-        private static final String COLUMN_VERSION = "version";
-        private static final String COLUMN_PREVIEW_BITMAP = "preview_bitmap";
-
-        CacheDb(Context context) {
-            super(context, LauncherFiles.WIDGET_PREVIEWS_DB, DB_VERSION, TABLE_NAME);
-        }
-
-        @Override
-        public void onCreateTable(SQLiteDatabase database) {
-            database.execSQL("CREATE TABLE IF NOT EXISTS "
-                    + TABLE_NAME
-                    + " ("
-                    + COLUMN_COMPONENT
-                    + " TEXT NOT NULL, "
-                    + COLUMN_USER
-                    + " INTEGER NOT NULL, "
-                    + COLUMN_SIZE
-                    + " TEXT NOT NULL, "
-                    + COLUMN_PACKAGE
-                    + " TEXT NOT NULL, "
-                    + COLUMN_LAST_UPDATED
-                    + " INTEGER NOT NULL DEFAULT 0, "
-                    + COLUMN_VERSION
-                    + " INTEGER NOT NULL DEFAULT 0, "
-                    + COLUMN_PREVIEW_BITMAP
-                    + " BLOB, "
-                    + "PRIMARY KEY ("
-                    + COLUMN_COMPONENT
-                    + ", "
-                    + COLUMN_USER
-                    + ", "
-                    + COLUMN_SIZE
-                    + ") "
-                    +
-                    ");");
-        }
-    }
-
-    @Thunk void writeToDb(WidgetCacheKey key, long[] versions, Bitmap preview) {
-        ContentValues values = new ContentValues();
-        values.put(CacheDb.COLUMN_COMPONENT, key.componentName.flattenToShortString());
-        values.put(CacheDb.COLUMN_USER, mUserCache.getSerialNumberForUser(key.user));
-        values.put(CacheDb.COLUMN_SIZE, key.mSize);
-        values.put(CacheDb.COLUMN_PACKAGE, key.componentName.getPackageName());
-        values.put(CacheDb.COLUMN_VERSION, versions[0]);
-        values.put(CacheDb.COLUMN_LAST_UPDATED, versions[1]);
-        values.put(CacheDb.COLUMN_PREVIEW_BITMAP, GraphicsUtils.flattenBitmap(preview));
-        mDb.insertOrReplace(values);
-    }
-
-    /** Removes the package from the preview database. */
-    public void removePackage(String packageName, UserHandle user) {
-        removePackage(packageName, user, mUserCache.getSerialNumberForUser(user));
-    }
-
-    /** Removes the package from the preview database. */
-    public void removePackage(String packageName, UserHandle user, long userSerial) {
-        synchronized (mPackageVersions) {
-            mPackageVersions.remove(packageName);
-        }
-
-        mDb.delete(
-                CacheDb.COLUMN_PACKAGE + " = ? AND " + CacheDb.COLUMN_USER + " = ?",
-                new String[]{packageName, Long.toString(userSerial)});
-    }
-
-    /**
-     * Updates the persistent DB:
-     *   1. Any preview generated for an old package version is removed
-     *   2. Any preview for an absent package is removed
-     * This ensures that we remove entries for packages which changed while the launcher was dead.
-     *
-     * @param packageUser if provided, specifies that list only contains previews for the
-     *                    given package/user, otherwise the list contains all previews
-     */
-    public void removeObsoletePreviews(ArrayList<? extends ComponentKey> list,
-            @Nullable PackageUserKey packageUser) {
-        Preconditions.assertWorkerThread();
-
-        LongSparseArray<HashSet<String>> validPackages = new LongSparseArray<>();
-
-        for (ComponentKey key : list) {
-            final long userId = mUserCache.getSerialNumberForUser(key.user);
-            HashSet<String> packages = validPackages.get(userId);
-            if (packages == null) {
-                packages = new HashSet<>();
-                validPackages.put(userId, packages);
-            }
-            packages.add(key.componentName.getPackageName());
-        }
-
-        LongSparseArray<HashSet<String>> packagesToDelete = new LongSparseArray<>();
-        long passedUserId = packageUser == null ? 0
-                : mUserCache.getSerialNumberForUser(packageUser.mUser);
-        Cursor c = null;
-        try {
-            c = mDb.query(
-                    new String[]{CacheDb.COLUMN_USER, CacheDb.COLUMN_PACKAGE,
-                            CacheDb.COLUMN_LAST_UPDATED, CacheDb.COLUMN_VERSION},
-                    null, null);
-            while (c.moveToNext()) {
-                long userId = c.getLong(0);
-                String pkg = c.getString(1);
-                long lastUpdated = c.getLong(2);
-                long version = c.getLong(3);
-
-                if (packageUser != null && (!pkg.equals(packageUser.mPackageName)
-                        || userId != passedUserId)) {
-                    // This preview is associated with a different package/user, no need to remove.
-                    continue;
-                }
-
-                HashSet<String> packages = validPackages.get(userId);
-                if (packages != null && packages.contains(pkg)) {
-                    long[] versions = getPackageVersion(pkg);
-                    if (versions[0] == version && versions[1] == lastUpdated) {
-                        // Every thing checks out
-                        continue;
-                    }
-                }
-
-                // We need to delete this package.
-                packages = packagesToDelete.get(userId);
-                if (packages == null) {
-                    packages = new HashSet<>();
-                    packagesToDelete.put(userId, packages);
-                }
-                packages.add(pkg);
-            }
-
-            for (int i = 0; i < packagesToDelete.size(); i++) {
-                long userId = packagesToDelete.keyAt(i);
-                UserHandle user = mUserCache.getUserForSerialNumber(userId);
-                for (String pkg : packagesToDelete.valueAt(i)) {
-                    removePackage(pkg, user, userId);
-                }
-            }
-        } catch (SQLException e) {
-            Log.e(TAG, "Error updating widget previews", e);
-        } finally {
-            if (c != null) {
-                c.close();
-            }
-        }
-    }
-
-    /**
-     * Reads the preview bitmap from the DB or null if the preview is not in the DB.
-     */
-    @Thunk Bitmap readFromDb(WidgetCacheKey key, Bitmap recycle, PreviewLoadTask loadTask) {
-        Cursor cursor = null;
-        try {
-            cursor = mDb.query(
-                    new String[]{CacheDb.COLUMN_PREVIEW_BITMAP},
-                    CacheDb.COLUMN_COMPONENT + " = ? AND " + CacheDb.COLUMN_USER + " = ? AND "
-                            + CacheDb.COLUMN_SIZE + " = ?",
-                    new String[]{
-                            key.componentName.flattenToShortString(),
-                            Long.toString(mUserCache.getSerialNumberForUser(key.user)),
-                            key.mSize
-                    });
-            // If cancelled, skip getting the blob and decoding it into a bitmap
-            if (loadTask.isCancelled()) {
-                return null;
-            }
-            if (cursor.moveToNext()) {
-                byte[] blob = cursor.getBlob(0);
-                BitmapFactory.Options opts = new BitmapFactory.Options();
-                opts.inBitmap = recycle;
-                try {
-                    if (!loadTask.isCancelled()) {
-                        return BitmapFactory.decodeByteArray(blob, 0, blob.length, opts);
-                    }
-                } catch (Exception e) {
-                    return null;
-                }
-            }
-        } catch (SQLException e) {
-            Log.w(TAG, "Error loading preview from DB", e);
-        } finally {
-            if (cursor != null) {
-                cursor.close();
-            }
-        }
-        return null;
+            @NonNull Consumer<Bitmap> callback) {
+        Handler handler = Executors.UI_HELPER_EXECUTOR.getHandler();
+        HandlerRunnable<Bitmap> request = new HandlerRunnable<>(handler,
+                () -> generatePreview(item, previewSize.getWidth(), previewSize.getHeight()),
+                MAIN_EXECUTOR,
+                callback);
+        Utilities.postAsyncCallback(handler, request);
+        return request;
     }
 
     /**
      * Returns a generated preview for a widget and if the preview should be saved in persistent
      * storage.
-     * @param launcher
-     * @param item
-     * @param recycle
-     * @param previewWidth
-     * @param previewHeight
-     * @return Pair<Bitmap, Boolean>
      */
-    private Pair<Bitmap, Boolean> generatePreview(BaseActivity launcher, WidgetItem item,
-            Bitmap recycle,
-            int previewWidth, int previewHeight) {
+    private Bitmap generatePreview(WidgetItem item, int previewWidth, int previewHeight) {
         if (item.widgetInfo != null) {
-            return generateWidgetPreview(launcher, item.widgetInfo,
-                    previewWidth, recycle, null);
+            return generateWidgetPreview(item.widgetInfo, previewWidth, null);
         } else {
-            return new Pair<>(generateShortcutPreview(launcher, item.activityInfo,
-                    previewWidth, previewHeight, recycle), false);
+            return generateShortcutPreview(item.activityInfo, previewWidth, previewHeight);
         }
     }
 
@@ -369,16 +103,12 @@
      * Generates the widget preview from either the {@link WidgetManagerHelper} or cache
      * and add badge at the bottom right corner.
      *
-     * @param launcher
      * @param info                        information about the widget
      * @param maxPreviewWidth             width of the preview on either workspace or tray
-     * @param preview                     bitmap that can be recycled
      * @param preScaledWidthOut           return the width of the returned bitmap
-     * @return Pair<Bitmap (the preview) , Boolean (should be stored in db)>
      */
-    public Pair<Bitmap, Boolean> generateWidgetPreview(BaseActivity launcher,
-            LauncherAppWidgetProviderInfo info,
-            int maxPreviewWidth, Bitmap preview, int[] preScaledWidthOut) {
+    public Bitmap generateWidgetPreview(LauncherAppWidgetProviderInfo info,
+            int maxPreviewWidth, int[] preScaledWidthOut) {
         // Load the preview image if possible
         if (maxPreviewWidth < 0) maxPreviewWidth = Integer.MAX_VALUE;
 
@@ -409,117 +139,96 @@
         int previewWidth;
         int previewHeight;
 
-        boolean savePreviewImage = widgetPreviewExists || info.previewImage == 0;
-
         if (widgetPreviewExists && drawable.getIntrinsicWidth() > 0
                 && drawable.getIntrinsicHeight() > 0) {
             previewWidth = drawable.getIntrinsicWidth();
             previewHeight = drawable.getIntrinsicHeight();
         } else {
-            DeviceProfile dp = launcher.getDeviceProfile();
+            DeviceProfile dp = mContext.getDeviceProfile();
             Size widgetSize = WidgetSizes.getWidgetPaddedSizePx(mContext, info.provider, dp, spanX,
                     spanY);
             previewWidth = widgetSize.getWidth();
             previewHeight = widgetSize.getHeight();
         }
 
-        // Scale to fit width only - let the widget preview be clipped in the
-        // vertical dimension
-        float scale = 1f;
         if (preScaledWidthOut != null) {
             preScaledWidthOut[0] = previewWidth;
         }
-        if (previewWidth > maxPreviewWidth) {
-            scale = maxPreviewWidth / (float) (previewWidth);
-        }
+        // Scale to fit width only - let the widget preview be clipped in the
+        // vertical dimension
+        final float scale = previewWidth > maxPreviewWidth
+                ? (maxPreviewWidth / (float) (previewWidth)) : 1f;
         if (scale != 1f) {
             previewWidth = Math.max((int) (scale * previewWidth), 1);
             previewHeight = Math.max((int) (scale * previewHeight), 1);
         }
 
-        final Canvas c = new Canvas();
-        if (preview == null) {
-            // If no bitmap was provided, then allocate a new one with the right size.
-            preview = Bitmap.createBitmap(previewWidth, previewHeight, Config.ARGB_8888);
-            c.setBitmap(preview);
-        } else {
-            // If a bitmap was passed in, attempt to reconfigure the bitmap to the same dimensions
-            // as the preview.
-            try {
-                preview.reconfigure(previewWidth, previewHeight, preview.getConfig());
-            } catch (IllegalArgumentException e) {
-                // This occurs if the preview can't be reconfigured for any reason. In this case,
-                // allocate a new bitmap with the right size.
-                preview = Bitmap.createBitmap(previewWidth, previewHeight, Config.ARGB_8888);
-            }
+        final int previewWidthF = previewWidth;
+        final int previewHeightF = previewHeight;
+        final Drawable drawableF = drawable;
 
-            c.setBitmap(preview);
-            c.drawColor(0, PorterDuff.Mode.CLEAR);
-        }
-
-        // Draw the scaled preview into the final bitmap
-        if (widgetPreviewExists) {
-            drawable.setBounds(0, 0, previewWidth, previewHeight);
-            drawable.draw(c);
-        } else {
-            RectF boxRect;
-
-            // Draw horizontal and vertical lines to represent individual columns.
-            final Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);
-
-            if (Utilities.ATLEAST_S) {
-                boxRect = new RectF(/* left= */ 0, /* top= */ 0, /* right= */
-                        previewWidth, /* bottom= */ previewHeight);
-
-                p.setStyle(Paint.Style.FILL);
-                p.setColor(Color.WHITE);
-                float roundedCorner = mContext.getResources().getDimension(
-                        android.R.dimen.system_app_widget_background_radius);
-                c.drawRoundRect(boxRect, roundedCorner, roundedCorner, p);
+        return BitmapRenderer.createHardwareBitmap(previewWidth, previewHeight, c -> {
+            // Draw the scaled preview into the final bitmap
+            if (widgetPreviewExists) {
+                drawableF.setBounds(0, 0, previewWidthF, previewHeightF);
+                drawableF.draw(c);
             } else {
-                boxRect = drawBoxWithShadow(c, previewWidth, previewHeight);
-            }
+                RectF boxRect;
 
-            p.setStyle(Paint.Style.STROKE);
-            p.setStrokeWidth(mContext.getResources()
-                    .getDimension(R.dimen.widget_preview_cell_divider_width));
-            p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
+                // Draw horizontal and vertical lines to represent individual columns.
+                final Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);
 
-            float t = boxRect.left;
-            float tileSize = boxRect.width() / spanX;
-            for (int i = 1; i < spanX; i++) {
-                t += tileSize;
-                c.drawLine(t, 0, t, previewHeight, p);
-            }
+                if (Utilities.ATLEAST_S) {
+                    boxRect = new RectF(/* left= */ 0, /* top= */ 0, /* right= */
+                            previewWidthF, /* bottom= */ previewHeightF);
 
-            t = boxRect.top;
-            tileSize = boxRect.height() / spanY;
-            for (int i = 1; i < spanY; i++) {
-                t += tileSize;
-                c.drawLine(0, t, previewWidth, t, p);
-            }
-
-            // Draw icon in the center.
-            try {
-                Drawable icon =
-                        mIconCache.getFullResIcon(info.provider.getPackageName(), info.icon);
-                if (icon != null) {
-                    int appIconSize = launcher.getDeviceProfile().iconSizePx;
-                    int iconSize = (int) Math.min(appIconSize * scale,
-                            Math.min(boxRect.width(), boxRect.height()));
-
-                    icon = mutateOnMainThread(icon);
-                    int hoffset = (previewWidth - iconSize) / 2;
-                    int yoffset = (previewHeight - iconSize) / 2;
-                    icon.setBounds(hoffset, yoffset, hoffset + iconSize, yoffset + iconSize);
-                    icon.draw(c);
+                    p.setStyle(Paint.Style.FILL);
+                    p.setColor(Color.WHITE);
+                    float roundedCorner = mContext.getResources().getDimension(
+                            android.R.dimen.system_app_widget_background_radius);
+                    c.drawRoundRect(boxRect, roundedCorner, roundedCorner, p);
+                } else {
+                    boxRect = drawBoxWithShadow(c, previewWidthF, previewHeightF);
                 }
-            } catch (Resources.NotFoundException e) {
-                savePreviewImage = false;
+
+                p.setStyle(Paint.Style.STROKE);
+                p.setStrokeWidth(mContext.getResources()
+                        .getDimension(R.dimen.widget_preview_cell_divider_width));
+                p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
+
+                float t = boxRect.left;
+                float tileSize = boxRect.width() / spanX;
+                for (int i = 1; i < spanX; i++) {
+                    t += tileSize;
+                    c.drawLine(t, 0, t, previewHeightF, p);
+                }
+
+                t = boxRect.top;
+                tileSize = boxRect.height() / spanY;
+                for (int i = 1; i < spanY; i++) {
+                    t += tileSize;
+                    c.drawLine(0, t, previewWidthF, t, p);
+                }
+
+                // Draw icon in the center.
+                try {
+                    Drawable icon = LauncherAppState.getInstance(mContext).getIconCache()
+                            .getFullResIcon(info.provider.getPackageName(), info.icon);
+                    if (icon != null) {
+                        int appIconSize = mContext.getDeviceProfile().iconSizePx;
+                        int iconSize = (int) Math.min(appIconSize * scale,
+                                Math.min(boxRect.width(), boxRect.height()));
+
+                        icon = mutateOnMainThread(icon);
+                        int hoffset = (previewWidthF - iconSize) / 2;
+                        int yoffset = (previewHeightF - iconSize) / 2;
+                        icon.setBounds(hoffset, yoffset, hoffset + iconSize, yoffset + iconSize);
+                        icon.draw(c);
+                    }
+                } catch (Resources.NotFoundException e) {
+                }
             }
-            c.setBitmap(null);
-        }
-        return new Pair<>(preview, savePreviewImage);
+        });
     }
 
     private RectF drawBoxWithShadow(Canvas c, int width, int height) {
@@ -537,42 +246,29 @@
         return builder.bounds;
     }
 
-    private Bitmap generateShortcutPreview(BaseActivity launcher, ShortcutConfigActivityInfo info,
-            int maxWidth, int maxHeight, Bitmap preview) {
-        int iconSize = launcher.getDeviceProfile().allAppsIconSizePx;
-        int padding = launcher.getResources()
+    private Bitmap generateShortcutPreview(
+            ShortcutConfigActivityInfo info, int maxWidth, int maxHeight) {
+        int iconSize = mContext.getDeviceProfile().allAppsIconSizePx;
+        int padding = mContext.getResources()
                 .getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
 
         int size = iconSize + 2 * padding;
         if (maxHeight < size || maxWidth < size) {
             throw new RuntimeException("Max size is too small for preview");
         }
-        final Canvas c = new Canvas();
-        if (preview == null || preview.getWidth() < size || preview.getHeight() < size) {
-            preview = Bitmap.createBitmap(size, size, Config.ARGB_8888);
-            c.setBitmap(preview);
-        } else {
-            if (preview.getWidth() > size || preview.getHeight() > size) {
-                preview.reconfigure(size, size, preview.getConfig());
-            }
+        return BitmapRenderer.createHardwareBitmap(size, size, c -> {
+            drawBoxWithShadow(c, size, size);
 
-            // Reusing bitmap. Clear it.
-            c.setBitmap(preview);
-            c.drawColor(0, PorterDuff.Mode.CLEAR);
-        }
+            LauncherIcons li = LauncherIcons.obtain(mContext);
+            Drawable icon = li.createBadgedIconBitmap(
+                    mutateOnMainThread(info.getFullResIcon(
+                            LauncherAppState.getInstance(mContext).getIconCache())),
+                    Process.myUserHandle(), 0).newIcon(mContext);
+            li.recycle();
 
-        drawBoxWithShadow(c, size, size);
-
-        LauncherIcons li = LauncherIcons.obtain(mContext);
-        Drawable icon = li.createBadgedIconBitmap(
-                mutateOnMainThread(info.getFullResIcon(mIconCache)),
-                Process.myUserHandle(), 0).newIcon(launcher);
-        li.recycle();
-
-        icon.setBounds(padding, padding, padding + iconSize, padding + iconSize);
-        icon.draw(c);
-        c.setBitmap(null);
-        return preview;
+            icon.setBounds(padding, padding, padding + iconSize, padding + iconSize);
+            icon.draw(c);
+        });
     }
 
     private Drawable mutateOnMainThread(final Drawable drawable) {
@@ -585,206 +281,4 @@
             throw new RuntimeException(e);
         }
     }
-
-    /**
-     * @return an array of containing versionCode and lastUpdatedTime for the package.
-     */
-    @Thunk long[] getPackageVersion(String packageName) {
-        synchronized (mPackageVersions) {
-            long[] versions = mPackageVersions.get(packageName);
-            if (versions == null) {
-                versions = new long[2];
-                try {
-                    PackageInfo info = mContext.getPackageManager().getPackageInfo(packageName,
-                            PackageManager.GET_UNINSTALLED_PACKAGES);
-                    versions[0] = info.versionCode;
-                    versions[1] = info.lastUpdateTime;
-                } catch (NameNotFoundException e) {
-                    Log.e(TAG, "PackageInfo not found", e);
-                }
-                mPackageVersions.put(packageName, versions);
-            }
-            return versions;
-        }
-    }
-
-    private class PreviewLoadTask extends AsyncTask<Void, Void, Bitmap>
-            implements CancellationSignal.OnCancelListener {
-        @Thunk final WidgetCacheKey mKey;
-        private final WidgetItem mInfo;
-        private final int mPreviewHeight;
-        private final int mPreviewWidth;
-        private final WidgetPreviewLoadedCallback mCallback;
-        private final BaseActivity mActivity;
-        @Thunk long[] mVersions;
-        @Thunk Bitmap mBitmapToRecycle;
-
-        @Nullable private Bitmap mUnusedPreviewBitmap;
-        private boolean mSaveToDB = false;
-
-        PreviewLoadTask(BaseActivity activity, WidgetCacheKey key, WidgetItem info,
-                int previewWidth, int previewHeight, WidgetPreviewLoadedCallback callback) {
-            mActivity = activity;
-            mKey = key;
-            mInfo = info;
-            mPreviewHeight = previewHeight;
-            mPreviewWidth = previewWidth;
-            mCallback = callback;
-            if (DEBUG) {
-                Log.d(TAG, String.format("%s, %s, %d, %d",
-                        mKey, mInfo, mPreviewHeight, mPreviewWidth));
-            }
-        }
-
-        @Override
-        protected Bitmap doInBackground(Void... params) {
-            Bitmap unusedBitmap = null;
-
-            // If already cancelled before this gets to run in the background, then return early
-            if (isCancelled()) {
-                return null;
-            }
-            synchronized (mUnusedBitmaps) {
-                // Check if we can re-use a bitmap
-                for (Bitmap candidate : mUnusedBitmaps) {
-                    if (candidate != null && candidate.isMutable()
-                            && candidate.getWidth() == mPreviewWidth
-                            && candidate.getHeight() == mPreviewHeight) {
-                        unusedBitmap = candidate;
-                        mUnusedBitmaps.remove(unusedBitmap);
-                        break;
-                    }
-                }
-            }
-
-            // creating a bitmap is expensive. Do not do this inside synchronized block.
-            if (unusedBitmap == null) {
-                unusedBitmap = Bitmap.createBitmap(mPreviewWidth, mPreviewHeight, Config.ARGB_8888);
-            }
-            // If cancelled now, don't bother reading the preview from the DB
-            if (isCancelled()) {
-                return unusedBitmap;
-            }
-            Bitmap preview = readFromDb(mKey, unusedBitmap, this);
-            // Only consider generating the preview if we have not cancelled the task already
-            if (!isCancelled() && preview == null) {
-                // Fetch the version info before we generate the preview, so that, in-case the
-                // app was updated while we are generating the preview, we use the old version info,
-                // which would gets re-written next time.
-                boolean persistable = mInfo.activityInfo == null
-                        || mInfo.activityInfo.isPersistable();
-                mVersions = persistable ? getPackageVersion(mKey.componentName.getPackageName())
-                        : null;
-
-                // it's not in the db... we need to generate it
-                Pair<Bitmap, Boolean> pair = generatePreview(mActivity, mInfo, unusedBitmap,
-                        mPreviewWidth, mPreviewHeight);
-                preview = pair.first;
-
-                if (preview != unusedBitmap) {
-                    mUnusedPreviewBitmap = unusedBitmap;
-                }
-
-                this.mSaveToDB = pair.second;
-            }
-            return preview;
-        }
-
-        @Override
-        protected void onPostExecute(final Bitmap preview) {
-            mCallback.onPreviewLoaded(preview);
-
-            // Write the generated preview to the DB in the worker thread
-            if (mVersions != null) {
-                MODEL_EXECUTOR.post(new Runnable() {
-                    @Override
-                    public void run() {
-                        if (mUnusedPreviewBitmap != null) {
-                            // If we didn't end up using the bitmap, it can be added back into the
-                            // recycled set.
-                            synchronized (mUnusedBitmaps) {
-                                mUnusedBitmaps.add(mUnusedPreviewBitmap);
-                            }
-                        }
-
-                        if (!isCancelled() && mSaveToDB) {
-                            // If we are still using this preview, then write it to the DB and then
-                            // let the normal clear mechanism recycle the bitmap
-                            writeToDb(mKey, mVersions, preview);
-                            mBitmapToRecycle = preview;
-                        } else {
-                            // If we've already cancelled, then skip writing the bitmap to the DB
-                            // and manually add the bitmap back to the recycled set
-                            synchronized (mUnusedBitmaps) {
-                                mUnusedBitmaps.add(preview);
-                            }
-                        }
-                    }
-                });
-            } else {
-                // If we don't need to write to disk, then ensure the preview gets recycled by
-                // the normal clear mechanism
-                mBitmapToRecycle = preview;
-            }
-        }
-
-        @Override
-        protected void onCancelled(final Bitmap preview) {
-            // If we've cancelled while the task is running, then can return the bitmap to the
-            // recycled set immediately. Otherwise, it will be recycled after the preview is written
-            // to disk.
-            if (preview != null) {
-                MODEL_EXECUTOR.post(new Runnable() {
-                    @Override
-                    public void run() {
-                        synchronized (mUnusedBitmaps) {
-                            mUnusedBitmaps.add(preview);
-                        }
-                    }
-                });
-            }
-        }
-
-        @Override
-        public void onCancel() {
-            cancel(true);
-
-            // This only handles the case where the PreviewLoadTask is cancelled after the task has
-            // successfully completed (including having written to disk when necessary).  In the
-            // other cases where it is cancelled while the task is running, it will be cleaned up
-            // in the tasks's onCancelled() call, and if cancelled while the task is writing to
-            // disk, it will be cancelled in the task's onPostExecute() call.
-            if (mBitmapToRecycle != null) {
-                MODEL_EXECUTOR.post(new Runnable() {
-                    @Override
-                    public void run() {
-                        synchronized (mUnusedBitmaps) {
-                            mUnusedBitmaps.add(mBitmapToRecycle);
-                        }
-                        mBitmapToRecycle = null;
-                    }
-                });
-            }
-        }
-    }
-
-    private static final class WidgetCacheKey extends ComponentKey {
-
-        @Thunk final String mSize;
-
-        WidgetCacheKey(ComponentName componentName, UserHandle user, String size) {
-            super(componentName, user);
-            this.mSize = size;
-        }
-
-        @Override
-        public int hashCode() {
-            return super.hashCode() ^ mSize.hashCode();
-        }
-
-        @Override
-        public boolean equals(Object o) {
-            return super.equals(o) && ((WidgetCacheKey) o).mSize.equals(mSize);
-        }
-    }
 }
diff --git a/src/com/android/launcher3/widget/DeferredAppWidgetHostView.java b/src/com/android/launcher3/widget/DeferredAppWidgetHostView.java
index 149ac57..9c32e42 100644
--- a/src/com/android/launcher3/widget/DeferredAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/DeferredAppWidgetHostView.java
@@ -25,6 +25,7 @@
 import android.text.TextPaint;
 import android.text.TextUtils;
 import android.util.TypedValue;
+import android.view.View;
 import android.widget.RemoteViews;
 
 import com.android.launcher3.R;
@@ -55,6 +56,11 @@
     }
 
     @Override
+    public void addView(View child) {
+        // Not allowed
+    }
+
+    @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 
diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
index 63bc416..f0b4ba0 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
@@ -19,54 +19,39 @@
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.Context;
 import android.content.res.Configuration;
-import android.graphics.Canvas;
-import android.graphics.Outline;
 import android.graphics.Rect;
-import android.graphics.RectF;
 import android.os.Handler;
 import android.os.SystemClock;
 import android.util.SparseBooleanArray;
 import android.util.SparseIntArray;
-import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewDebug;
 import android.view.ViewGroup;
-import android.view.ViewOutlineProvider;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.AdapterView;
 import android.widget.Advanceable;
 import android.widget.RemoteViews;
 
-import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.UiThread;
 
 import com.android.launcher3.CheckLongPressHelper;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace;
 import com.android.launcher3.dragndrop.DragLayer;
-import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.util.Executors;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.BaseDragLayer.TouchCompleteListener;
-import com.android.launcher3.widget.dragndrop.AppWidgetHostViewDragListener;
-
-import java.util.List;
 
 /**
  * {@inheritDoc}
  */
-public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
+public class LauncherAppWidgetHostView extends BaseLauncherAppWidgetHostView
         implements TouchCompleteListener, View.OnLongClickListener,
         LocalColorExtractor.Listener {
 
-    private static final String LOG_TAG = "LauncherAppWidgetHostView";
-
     // Related to the auto-advancing of widgets
     private static final long ADVANCE_INTERVAL = 20000;
     private static final long ADVANCE_STAGGER = 250;
@@ -76,11 +61,9 @@
     // Maximum duration for which updates can be deferred.
     private static final long UPDATE_LOCK_TIMEOUT_MILLIS = 1000;
 
-    protected final LayoutInflater mInflater;
-
+    private final Rect mTempRect = new Rect();
     private final CheckLongPressHelper mLongPressHelper;
     protected final Launcher mLauncher;
-    private final Workspace mWorkspace;
 
     @ViewDebug.ExportedProperty(category = "launcher")
     private boolean mReinflateOnConfigChange;
@@ -91,54 +74,31 @@
     private boolean mIsScrollable;
     private boolean mIsAttachedToWindow;
     private boolean mIsAutoAdvanceRegistered;
-    private boolean mIsInDragMode = false;
     private Runnable mAutoAdvanceRunnable;
-    private RectF mLastLocationRegistered = null;
-    @Nullable private AppWidgetHostViewDragListener mDragListener;
 
-    // Used to store the widget sizes in drag layer coordinates.
-    private final Rect mCurrentWidgetSize = new Rect();
-    private final Rect mWidgetSizeAtDrag = new Rect();
-
-    private final RectF mTempRectF = new RectF();
-    private final Rect mEnforcedRectangle = new Rect();
-    private final float mEnforcedCornerRadius;
-    private final ViewOutlineProvider mCornerRadiusEnforcementOutline = new ViewOutlineProvider() {
-        @Override
-        public void getOutline(View view, Outline outline) {
-            if (mEnforcedRectangle.isEmpty() || mEnforcedCornerRadius <= 0) {
-                outline.setEmpty();
-            } else {
-                outline.setRoundRect(mEnforcedRectangle, mEnforcedCornerRadius);
-            }
-        }
-    };
-    private final Object mUpdateLock = new Object();
-    private final ViewGroupFocusHelper mDragLayerRelativeCoordinateHelper;
     private long mDeferUpdatesUntilMillis = 0;
     private RemoteViews mDeferredRemoteViews;
     private boolean mHasDeferredColorChange = false;
     private @Nullable SparseIntArray mDeferredColorChange = null;
-    private boolean mEnableColorExtraction = true;
+
+    // The following member variables are only used during drag-n-drop.
+    private boolean mIsInDragMode = false;
+    /** The drag content width which is only set when the drag content scale is not 1f. */
+    private int mDragContentWidth = 0;
+    /** The drag content height which is only set when the drag content scale is not 1f. */
+    private int mDragContentHeight = 0;
 
     public LauncherAppWidgetHostView(Context context) {
         super(context);
         mLauncher = Launcher.getLauncher(context);
-        mWorkspace = mLauncher.getWorkspace();
         mLongPressHelper = new CheckLongPressHelper(this, this);
-        mInflater = LayoutInflater.from(context);
         setAccessibilityDelegate(mLauncher.getAccessibilityDelegate());
         setBackgroundResource(R.drawable.widget_internal_focus_bg);
 
-        setExecutor(Executors.THREAD_POOL_EXECUTOR);
         if (Utilities.ATLEAST_Q && Themes.getAttrBoolean(mLauncher, R.attr.isWorkspaceDarkText)) {
             setOnLightBackground(true);
         }
         mColorExtractor = LocalColorExtractor.newInstance(getContext());
-        mColorExtractor.setListener(this);
-
-        mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(getContext());
-        mDragLayerRelativeCoordinateHelper = new ViewGroupFocusHelper(mLauncher.getDragLayer());
     }
 
     @Override
@@ -151,14 +111,6 @@
     }
 
     @Override
-    protected void onDraw(Canvas canvas) {
-        super.onDraw(canvas);
-        if (mIsInDragMode && mDragListener != null) {
-            mDragListener.onDragContentChanged();
-        }
-    }
-
-    @Override
     public boolean onLongClick(View view) {
         if (mIsScrollable) {
             DragLayer dragLayer = mLauncher.getDragLayer();
@@ -169,19 +121,12 @@
     }
 
     @Override
-    protected View getErrorView() {
-        return mInflater.inflate(R.layout.appwidget_error, this, false);
-    }
-
-    @Override
     public void updateAppWidget(RemoteViews remoteViews) {
-        synchronized (mUpdateLock) {
-            if (isDeferringUpdates()) {
-                mDeferredRemoteViews = remoteViews;
-                return;
-            }
-            mDeferredRemoteViews = null;
+        if (isDeferringUpdates()) {
+            mDeferredRemoteViews = remoteViews;
+            return;
         }
+        mDeferredRemoteViews = null;
 
         super.updateAppWidget(remoteViews);
 
@@ -232,9 +177,7 @@
      * {@link #onColorsChanged} call after {@link #UPDATE_LOCK_TIMEOUT_MILLIS} have elapsed.
      */
     public void beginDeferringUpdates() {
-        synchronized (mUpdateLock) {
-            mDeferUpdatesUntilMillis = SystemClock.uptimeMillis() + UPDATE_LOCK_TIMEOUT_MILLIS;
-        }
+        mDeferUpdatesUntilMillis = SystemClock.uptimeMillis() + UPDATE_LOCK_TIMEOUT_MILLIS;
     }
 
     /**
@@ -246,20 +189,19 @@
         RemoteViews remoteViews;
         SparseIntArray deferredColors;
         boolean hasDeferredColors;
-        synchronized (mUpdateLock) {
-            mDeferUpdatesUntilMillis = 0;
-            remoteViews = mDeferredRemoteViews;
-            mDeferredRemoteViews = null;
-            deferredColors = mDeferredColorChange;
-            hasDeferredColors = mHasDeferredColorChange;
-            mDeferredColorChange = null;
-            mHasDeferredColorChange = false;
-        }
+        mDeferUpdatesUntilMillis = 0;
+        remoteViews = mDeferredRemoteViews;
+        mDeferredRemoteViews = null;
+        deferredColors = mDeferredColorChange;
+        hasDeferredColors = mHasDeferredColorChange;
+        mDeferredColorChange = null;
+        mHasDeferredColorChange = false;
+
         if (remoteViews != null) {
             updateAppWidget(remoteViews);
         }
         if (hasDeferredColors) {
-            onColorsChanged(null /* rectF */, deferredColors);
+            onColorsChanged(deferredColors);
         }
     }
 
@@ -284,13 +226,9 @@
     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
-
         mIsAttachedToWindow = true;
         checkIfAutoAdvance();
-
-        if (mLastLocationRegistered != null) {
-            mColorExtractor.addLocation(List.of(mLastLocationRegistered));
-        }
+        mColorExtractor.setListener(this);
     }
 
     @Override
@@ -301,7 +239,7 @@
         // state is updated. So isAttachedToWindow() will return true until next frame.
         mIsAttachedToWindow = false;
         checkIfAutoAdvance();
-        mColorExtractor.removeLocations();
+        mColorExtractor.setListener(null);
     }
 
     @Override
@@ -329,126 +267,65 @@
         }
     }
 
-    public void switchToErrorView() {
-        // Update the widget with 0 Layout id, to reset the view to error view.
-        updateAppWidget(new RemoteViews(getAppWidgetInfo().provider.getPackageName(), 0));
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+        mIsScrollable = checkScrollableRecursively(this);
+
+        if (!mIsInDragMode && getTag() instanceof LauncherAppWidgetInfo) {
+            LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) getTag();
+            mTempRect.set(left, top, right, bottom);
+            mColorExtractor.setWorkspaceLocation(mTempRect, (View) getParent(), info.screenId);
+        }
     }
 
     @Override
-    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
-        try {
-            super.onLayout(changed, left, top, right, bottom);
-        } catch (final RuntimeException e) {
-            post(new Runnable() {
-                @Override
-                public void run() {
-                    switchToErrorView();
-                }
-            });
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        if (mIsInDragMode && mDragContentWidth > 0 && mDragContentHeight > 0
+                && getChildCount() == 1) {
+            measureChild(getChildAt(0), MeasureSpec.getSize(mDragContentWidth),
+                    MeasureSpec.getSize(mDragContentHeight));
         }
-
-        mIsScrollable = checkScrollableRecursively(this);
-        updateColorExtraction();
-
-        enforceRoundedCorners();
     }
 
     /** Starts the drag mode. */
-    public void startDrag(AppWidgetHostViewDragListener dragListener) {
+    public void startDrag() {
         mIsInDragMode = true;
-        mDragListener = dragListener;
+        // In the case of dragging a scaled preview from widgets picker, we should reuse the
+        // previously measured dimension from WidgetCell#measureAndComputeWidgetPreviewScale, which
+        // measures the dimension of a widget preview without its parent's bound before scaling
+        // down.
+        if ((getScaleX() != 1f || getScaleY() != 1f) && getChildCount() == 1) {
+            mDragContentWidth = getChildAt(0).getMeasuredWidth();
+            mDragContentHeight = getChildAt(0).getMeasuredHeight();
+        }
     }
 
-    /** Handles a drag event occurred on a workspace page, {@code pageId}. */
-    public void handleDrag(Rect rectInDragLayer, int pageId) {
-        mWidgetSizeAtDrag.set(rectInDragLayer);
-        updateColorExtraction(mWidgetSizeAtDrag, pageId);
+    /** Handles a drag event occurred on a workspace page corresponding to the {@code screenId}. */
+    public void handleDrag(Rect rectInView, View view, int screenId) {
+        if (mIsInDragMode) {
+            mColorExtractor.setWorkspaceLocation(rectInView, view, screenId);
+        }
     }
 
     /** Ends the drag mode. */
     public void endDrag() {
         mIsInDragMode = false;
-        mDragListener = null;
-        mWidgetSizeAtDrag.setEmpty();
-    }
-
-    /**
-     * @param rectInDragLayer Rect of widget in drag layer coordinates.
-     * @param pageId The workspace page the widget is on.
-     */
-    private void updateColorExtraction(Rect rectInDragLayer, int pageId) {
-        if (!mEnableColorExtraction) return;
-        mColorExtractor.getExtractedRectForViewRect(mLauncher, pageId, rectInDragLayer, mTempRectF);
-
-        if (mTempRectF.isEmpty()) {
-            return;
-        }
-        if (!isSameLocation(mTempRectF, mLastLocationRegistered, /* epsilon= */ 1e-6f)) {
-            if (mLastLocationRegistered != null) {
-                mColorExtractor.removeLocations();
-            }
-            mLastLocationRegistered = new RectF(mTempRectF);
-            mColorExtractor.addLocation(List.of(mLastLocationRegistered));
-        }
-    }
-
-    /**
-     * Update the color extraction, using the current position of the app widget.
-     */
-    private void updateColorExtraction() {
-        if (!mIsInDragMode && getTag() instanceof LauncherAppWidgetInfo) {
-            LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) getTag();
-            mDragLayerRelativeCoordinateHelper.viewToRect(this, mCurrentWidgetSize);
-            updateColorExtraction(mCurrentWidgetSize,
-                    mWorkspace.getPageIndexForScreenId(info.screenId));
-        }
-    }
-
-    /**
-     * Enables the local color extraction.
-     *
-     * @param updateColors If true, this will update the color extraction using the current location
-     *                    of the App Widget.
-     */
-    public void enableColorExtraction(boolean updateColors) {
-        mEnableColorExtraction = true;
-        if (updateColors) {
-            updateColorExtraction();
-        }
-    }
-
-    /**
-     * Disables the local color extraction.
-     */
-    public void disableColorExtraction() {
-        mEnableColorExtraction = false;
-    }
-
-    // Compare two location rectangles. Locations are always in the [0;1] range.
-    private static boolean isSameLocation(@NonNull RectF rect1, @Nullable RectF rect2,
-            float epsilon) {
-        if (rect2 == null) return false;
-        return isSameCoordinate(rect1.left, rect2.left, epsilon)
-                && isSameCoordinate(rect1.right, rect2.right, epsilon)
-                && isSameCoordinate(rect1.top, rect2.top, epsilon)
-                && isSameCoordinate(rect1.bottom, rect2.bottom, epsilon);
-    }
-
-    private static boolean isSameCoordinate(float c1, float c2, float epsilon) {
-        return Math.abs(c1 - c2) < epsilon;
+        mDragContentWidth = 0;
+        mDragContentHeight = 0;
+        requestLayout();
     }
 
     @Override
-    public void onColorsChanged(RectF rectF, SparseIntArray colors) {
-        synchronized (mUpdateLock) {
-            if (isDeferringUpdates()) {
-                mDeferredColorChange = colors;
-                mHasDeferredColorChange = true;
-                return;
-            }
-            mDeferredColorChange = null;
-            mHasDeferredColorChange = false;
+    public void onColorsChanged(SparseIntArray colors) {
+        if (isDeferringUpdates()) {
+            mDeferredColorChange = colors;
+            mHasDeferredColorChange = true;
+            return;
         }
+        mDeferredColorChange = null;
+        mHasDeferredColorChange = false;
 
         // setColorResources will reapply the view, which must happen in the UI thread.
         post(() -> setColorResources(colors));
@@ -564,40 +441,4 @@
         }
         return false;
     }
-
-    @UiThread
-    private void resetRoundedCorners() {
-        setOutlineProvider(ViewOutlineProvider.BACKGROUND);
-        setClipToOutline(false);
-    }
-
-    @UiThread
-    private void enforceRoundedCorners() {
-        if (mEnforcedCornerRadius <= 0 || !RoundedCornerEnforcement.isRoundedCornerEnabled()) {
-            resetRoundedCorners();
-            return;
-        }
-        View background = RoundedCornerEnforcement.findBackground(this);
-        if (background == null
-                || RoundedCornerEnforcement.hasAppWidgetOptedOut(this, background)) {
-            resetRoundedCorners();
-            return;
-        }
-        RoundedCornerEnforcement.computeRoundedRectangle(this,
-                background,
-                mEnforcedRectangle);
-        setOutlineProvider(mCornerRadiusEnforcementOutline);
-        setClipToOutline(true);
-    }
-
-    /** Returns the corner radius currently enforced, in pixels. */
-    public float getEnforcedCornerRadius() {
-        return mEnforcedCornerRadius;
-    }
-
-    /** Returns true if the corner radius are enforced for this App Widget. */
-    public boolean hasEnforcedCornerRadius() {
-        return getClipToOutline();
-    }
-
 }
diff --git a/src/com/android/launcher3/widget/LocalColorExtractor.java b/src/com/android/launcher3/widget/LocalColorExtractor.java
index 23d9e15..96e7531 100644
--- a/src/com/android/launcher3/widget/LocalColorExtractor.java
+++ b/src/com/android/launcher3/widget/LocalColorExtractor.java
@@ -20,18 +20,14 @@
 import android.appwidget.AppWidgetHostView;
 import android.content.Context;
 import android.graphics.Rect;
-import android.graphics.RectF;
 import android.util.SparseIntArray;
 import android.view.View;
 
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.util.ResourceBasedOverride;
 
-import java.util.List;
-
 /** Extracts the colors we need from the wallpaper at given locations. */
 public class LocalColorExtractor implements ResourceBasedOverride {
 
@@ -44,7 +40,7 @@
          * their value, in a format that can be passed directly to
          * {@link AppWidgetHostView#setColorResources(SparseIntArray)}.
          */
-        void onColorsChanged(RectF rect, SparseIntArray extractedColors);
+        void onColorsChanged(SparseIntArray extractedColors);
     }
 
     /**
@@ -60,15 +56,13 @@
         // no-op
     }
 
-    /** Adds a list of locations to track with this listener. */
-    public void addLocation(List<RectF> locations) {
-        // no-op
-    }
-
-    /** Stops tracking any locations. */
-    public void removeLocations() {
-        // no-op
-    }
+    /**
+     * Sets the location used for color extraction
+     * @param pos position to use for color extraction
+     * @param child view whose coordinate space is used for {@code pos}
+     * @param screenId the workspace screenId
+     */
+    public void setWorkspaceLocation(Rect pos, View child, int screenId) { }
 
     /**
      * Updates the base context to contain the colors override
@@ -83,32 +77,4 @@
         return null;
     }
 
-    /**
-     * Takes a view and returns its rect that can be used by the wallpaper local color extractor.
-     *
-     * @param launcher Launcher class class.
-     * @param pageId The page the workspace item is on.
-     * @param v The view.
-     * @param colorExtractionRectOut The location rect, but converted to a format expected by the
-     *                               wallpaper local color extractor.
-     */
-    public void getExtractedRectForView(Launcher launcher, int pageId, View v,
-            RectF colorExtractionRectOut) {
-        // no-op
-    }
-
-    /**
-     * Takes a rect in drag layer coordinates and returns the rect that can be used by the wallpaper
-     * local color extractor.
-     *
-     * @param launcher Launcher class.
-     * @param pageId The page the workspace item is on.
-     * @param rectInDragLayer The relevant bounds of the view in drag layer coordinates.
-     * @param colorExtractionRectOut The location rect, but converted to a format expected by the
-     *                               wallpaper local color extractor.
-     */
-    public void getExtractedRectForViewRect(Launcher launcher, int pageId, Rect rectInDragLayer,
-            RectF colorExtractionRectOut) {
-        // no-op
-    }
 }
diff --git a/src/com/android/launcher3/widget/NavigableAppWidgetHostView.java b/src/com/android/launcher3/widget/NavigableAppWidgetHostView.java
index 6163b51..241c937 100644
--- a/src/com/android/launcher3/widget/NavigableAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/NavigableAppWidgetHostView.java
@@ -26,7 +26,6 @@
 import android.view.ViewDebug;
 import android.view.ViewGroup;
 
-import com.android.launcher3.BaseActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Reorderable;
 import com.android.launcher3.dragndrop.DraggableView;
@@ -50,6 +49,8 @@
      */
     private final PointF mTranslationForCentering = new PointF(0, 0);
 
+    private final PointF mTranslationForMoveFromCenterAnimation = new PointF(0, 0);
+
     private final PointF mTranslationForReorderBounce = new PointF(0, 0);
     private final PointF mTranslationForReorderPreview = new PointF(0, 0);
     private float mScaleForReorderBounce = 1f;
@@ -59,7 +60,7 @@
     @ViewDebug.ExportedProperty(category = "launcher")
     private boolean mChildrenFocused;
 
-    protected final BaseActivity mActivity;
+    protected final ActivityContext mActivity;
 
     public NavigableAppWidgetHostView(Context context) {
         super(context);
@@ -168,9 +169,9 @@
 
     private void updateTranslation() {
         super.setTranslationX(mTranslationForReorderBounce.x + mTranslationForReorderPreview.x
-                + mTranslationForCentering.x);
+                + mTranslationForCentering.x + mTranslationForMoveFromCenterAnimation.x);
         super.setTranslationY(mTranslationForReorderBounce.y + mTranslationForReorderPreview.y
-                + mTranslationForCentering.y);
+                + mTranslationForCentering.y + mTranslationForMoveFromCenterAnimation.y);
     }
 
     public void setTranslationForCentering(float x, float y) {
@@ -178,6 +179,11 @@
         updateTranslation();
     }
 
+    public void setTranslationForMoveFromCenterAnimation(float x, float y) {
+        mTranslationForMoveFromCenterAnimation.set(x, y);
+        updateTranslation();
+    }
+
     public void setReorderBounceOffset(float x, float y) {
         mTranslationForReorderBounce.set(x, y);
         updateTranslation();
diff --git a/src/com/android/launcher3/widget/PendingItemDragHelper.java b/src/com/android/launcher3/widget/PendingItemDragHelper.java
index cea4de7..2347d28 100644
--- a/src/com/android/launcher3/widget/PendingItemDragHelper.java
+++ b/src/com/android/launcher3/widget/PendingItemDragHelper.java
@@ -22,6 +22,7 @@
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
+import android.util.Size;
 import android.view.View;
 import android.view.View.MeasureSpec;
 import android.widget.RemoteViews;
@@ -41,6 +42,7 @@
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.icons.RoundDrawableWrapper;
 import com.android.launcher3.widget.dragndrop.AppWidgetHostViewDragListener;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 /**
  * Extension of {@link DragPreviewProvider} with logic specific to pending widgets/shortcuts
@@ -54,6 +56,7 @@
     private int[] mEstimatedCellSize;
 
     @Nullable private RemoteViews mRemoteViewsPreview;
+    private float mRemoteViewsPreviewScale = 1f;
     @Nullable private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
     private final float mEnforcedRoundedCornersForWidget;
 
@@ -68,8 +71,10 @@
      * Sets a {@link RemoteViews} which shows an app widget preview provided by app developers in
      * the pin widget flow.
      */
-    public void setRemoteViewsPreview(@Nullable RemoteViews remoteViewsPreview) {
+    public void setRemoteViewsPreview(@Nullable RemoteViews remoteViewsPreview,
+            float previewScale) {
         mRemoteViewsPreview = remoteViewsPreview;
+        mRemoteViewsPreviewScale = previewScale;
     }
 
     /** Sets a {@link NavigableAppWidgetHostView} which shows a preview layout of an app widget. */
@@ -120,13 +125,14 @@
                 mAppWidgetHostViewPreview.setPadding(padding.left, padding.top, padding.right,
                         padding.bottom);
                 mAppWidgetHostViewPreview.updateAppWidget(/* remoteViews= */ mRemoteViewsPreview);
-                int width =
-                        deviceProfile.cellWidthPx * mAddInfo.spanX + padding.left + padding.right;
-                int height =
-                        deviceProfile.cellHeightPx * mAddInfo.spanY + padding.top + padding.bottom;
+                Size widgetSizes = WidgetSizes.getWidgetPaddedSizePx(launcher,
+                        mAddInfo.componentName, deviceProfile, mAddInfo.spanX, mAddInfo.spanY);
                 mAppWidgetHostViewPreview.measure(
-                        MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY),
-                        MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));
+                        MeasureSpec.makeMeasureSpec(widgetSizes.getWidth(), MeasureSpec.EXACTLY),
+                        MeasureSpec.makeMeasureSpec(widgetSizes.getHeight(), MeasureSpec.EXACTLY));
+                mAppWidgetHostViewPreview.setClipChildren(false);
+                mAppWidgetHostViewPreview.setClipToPadding(false);
+                mAppWidgetHostViewPreview.setScaleToFit(mRemoteViewsPreviewScale);
             }
             if (mAppWidgetHostViewPreview != null) {
                 previewSizeBeforeScale[0] = mAppWidgetHostViewPreview.getMeasuredWidth();
@@ -134,10 +140,9 @@
                         .addDragListener(new AppWidgetHostViewDragListener(launcher));
             }
             if (preview == null && mAppWidgetHostViewPreview == null) {
-                Drawable p = new FastBitmapDrawable(
-                        app.getWidgetCache().generateWidgetPreview(launcher,
-                                createWidgetInfo.info, maxWidth, null,
-                                previewSizeBeforeScale).first);
+                Drawable p = new FastBitmapDrawable(new DatabaseWidgetPreviewLoader(launcher)
+                        .generateWidgetPreview(
+                                createWidgetInfo.info, maxWidth, previewSizeBeforeScale));
                 if (RoundedCornerEnforcement.isRoundedCornerEnabled()) {
                     p = new RoundDrawableWrapper(p, mEnforcedRoundedCornersForWidget);
                 }
@@ -199,10 +204,6 @@
             draggableView = DraggableView.ofType(DraggableView.DRAGGABLE_ICON);
         }
 
-        // Since we are not going through the workspace for starting the drag, set drag related
-        // information on the workspace before starting the drag.
-        launcher.getWorkspace().prepareDragWithProvider(this);
-
         int dragLayerX = screenPos.x + previewBounds.left
                 + (int) ((scale * previewWidth - previewWidth) / 2);
         int dragLayerY = screenPos.y + previewBounds.top
diff --git a/src/com/android/launcher3/widget/WidgetCell.java b/src/com/android/launcher3/widget/WidgetCell.java
index 5769ba0..423c66a 100644
--- a/src/com/android/launcher3/widget/WidgetCell.java
+++ b/src/com/android/launcher3/widget/WidgetCell.java
@@ -16,21 +16,23 @@
 
 package com.android.launcher3.widget;
 
+import static android.view.View.MeasureSpec.makeMeasureSpec;
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
 import static com.android.launcher3.Utilities.ATLEAST_S;
 
 import android.content.Context;
 import android.graphics.Bitmap;
-import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
-import android.os.CancellationSignal;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.util.Size;
 import android.view.Gravity;
 import android.view.MotionEvent;
 import android.view.View;
-import android.view.View.OnLayoutChangeListener;
+import android.view.ViewGroup;
 import android.view.ViewPropertyAnimator;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
@@ -38,6 +40,7 @@
 import android.widget.RemoteViews;
 import android.widget.TextView;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.BaseActivity;
@@ -47,9 +50,13 @@
 import com.android.launcher3.R;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.icons.RoundDrawableWrapper;
+import com.android.launcher3.icons.cache.HandlerRunnable;
 import com.android.launcher3.model.WidgetItem;
+import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.widget.util.WidgetSizes;
 
+import java.util.function.Consumer;
+
 /**
  * Represents the individual cell of the widget inside the widget tray. The preview is drawn
  * horizontally centered, and scaled down if needed.
@@ -59,7 +66,7 @@
  * transition from the view to drag view, so when adding padding support, DnD would need to
  * consider the appropriate scaling factor.
  */
-public class WidgetCell extends LinearLayout implements OnLayoutChangeListener {
+public class WidgetCell extends LinearLayout {
 
     private static final String TAG = "WidgetCell";
     private static final boolean DEBUG = false;
@@ -72,11 +79,36 @@
     /** Widget preview width is calculated by multiplying this factor to the widget cell width. */
     private static final float PREVIEW_SCALE = 0.8f;
 
-    protected int mPreviewWidth;
-    protected int mPreviewHeight;
+    /**
+     * The maximum dimension that can be used as the size in
+     * {@link android.view.View.MeasureSpec#makeMeasureSpec(int, int)}.
+     *
+     * <p>This is equal to (1 << MeasureSpec.MODE_SHIFT) - 1.
+     */
+    private static final int MAX_MEASURE_SPEC_DIMENSION = (1 << 30) - 1;
+
+    /**
+     * The target preview width, in pixels, of a widget or a shortcut.
+     *
+     * <p>The actual preview width may be smaller than or equal to this value subjected to scaling.
+     */
+    protected int mTargetPreviewWidth;
+
+    /**
+     * The target preview height, in pixels, of a widget or a shortcut.
+     *
+     * <p>The actual preview height may be smaller than or equal to this value subjected to scaling.
+     */
+    protected int mTargetPreviewHeight;
+
     protected int mPresetPreviewSize;
+
     private int mCellSize;
-    private float mPreviewScale = 1f;
+
+    /**
+     * The scale of the preview container.
+     */
+    private float mPreviewContainerScale = 1f;
 
     private FrameLayout mWidgetImageContainer;
     private WidgetImageView mWidgetImage;
@@ -86,21 +118,18 @@
 
     protected WidgetItem mItem;
 
-    private WidgetPreviewLoader mWidgetPreviewLoader;
+    private final DatabaseWidgetPreviewLoader mWidgetPreviewLoader;
 
-    protected CancellationSignal mActiveRequest;
+    protected HandlerRunnable mActiveRequest;
     private boolean mAnimatePreview = true;
 
-    private boolean mApplyBitmapDeferred = false;
-    private Drawable mDeferredDrawable;
-
     protected final BaseActivity mActivity;
     private final CheckLongPressHelper mLongPressHelper;
     private final float mEnforcedCornerRadius;
-    private final int mShortcutPreviewPadding;
 
     private RemoteViews mRemoteViewsPreview;
     private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
+    private float mAppWidgetHostViewScale = 1f;
     private int mSourceContainer = CONTAINER_WIDGETS_TRAY;
 
     public WidgetCell(Context context) {
@@ -115,6 +144,7 @@
         super(context, attrs, defStyle);
 
         mActivity = BaseActivity.fromContext(context);
+        mWidgetPreviewLoader = new DatabaseWidgetPreviewLoader(mActivity);
         mLongPressHelper = new CheckLongPressHelper(this);
         mLongPressHelper.setLongPressTimeoutFactor(1);
 
@@ -123,14 +153,12 @@
         setClipToPadding(false);
         setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
         mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
-        mShortcutPreviewPadding =
-                2 * getResources().getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
     }
 
     private void setContainerWidth() {
         mCellSize = (int) (mActivity.getDeviceProfile().allAppsIconSizePx * WIDTH_SCALE);
         mPresetPreviewSize = (int) (mCellSize * PREVIEW_SCALE);
-        mPreviewWidth = mPreviewHeight = mPresetPreviewSize;
+        mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;
     }
 
     @Override
@@ -153,6 +181,11 @@
         return mRemoteViewsPreview;
     }
 
+    /** Returns the app widget host view scale, which is a value between [0f, 1f]. */
+    public float getAppWidgetHostViewScale() {
+        return mAppWidgetHostViewScale;
+    }
+
     /**
      * Called to clear the view and free attached resources. (e.g., {@link Bitmap}
      */
@@ -167,7 +200,7 @@
         mWidgetDims.setText(null);
         mWidgetDescription.setText(null);
         mWidgetDescription.setVisibility(GONE);
-        mPreviewWidth = mPreviewHeight = mPresetPreviewSize;
+        mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;
 
         if (mActiveRequest != null) {
             mActiveRequest.cancel();
@@ -178,6 +211,7 @@
             mWidgetImageContainer.removeView(mAppWidgetHostViewPreview);
         }
         mAppWidgetHostViewPreview = null;
+        mAppWidgetHostViewScale = 1f;
         mItem = null;
     }
 
@@ -185,7 +219,36 @@
         this.mSourceContainer = sourceContainer;
     }
 
-    public void applyFromCellItem(WidgetItem item, WidgetPreviewLoader loader) {
+    /**
+     * Applies the item to this view
+     */
+    public void applyFromCellItem(WidgetItem item) {
+        applyFromCellItem(item, 1f);
+    }
+
+    /**
+     * Applies the item to this view
+     */
+    public void applyFromCellItem(WidgetItem item, float previewScale) {
+        applyFromCellItem(item, previewScale, this::applyPreview, null);
+    }
+
+    /**
+     * Applies the item to this view
+     * @param item item to apply
+     * @param previewScale factor to scale the preview
+     * @param callback callback when preview is loaded in case the preview is being loaded or cached
+     * @param cachedPreview previously cached preview bitmap is present
+     */
+    public void applyFromCellItem(WidgetItem item, float previewScale,
+            @NonNull Consumer<Bitmap> callback, @Nullable Bitmap cachedPreview) {
+        // setPreviewSize
+        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
+        Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, item);
+        mTargetPreviewWidth = widgetSize.getWidth();
+        mTargetPreviewHeight = widgetSize.getHeight();
+        mPreviewContainerScale = previewScale;
+
         applyPreviewOnAppWidgetHostView(item);
 
         Context context = getContext();
@@ -207,14 +270,14 @@
             }
         }
 
-        mWidgetPreviewLoader = loader;
         if (item.activityInfo != null) {
             setTag(new PendingAddShortcutInfo(item.activityInfo));
         } else {
             setTag(new PendingAddWidgetInfo(item.widgetInfo, mSourceContainer));
         }
-    }
 
+        ensurePreviewWithCallback(callback, cachedPreview);
+    }
 
     private void applyPreviewOnAppWidgetHostView(WidgetItem item) {
         if (mRemoteViewsPreview != null) {
@@ -249,16 +312,6 @@
             @Nullable RemoteViews remoteViews) {
         appWidgetHostViewPreview.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
         appWidgetHostViewPreview.setAppWidget(/* appWidgetId= */ -1, providerInfo);
-        Rect padding;
-        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
-        if (deviceProfile.shouldInsetWidgets()) {
-            padding = new Rect();
-            appWidgetHostViewPreview.getWidgetInset(deviceProfile, padding);
-        } else {
-            padding = deviceProfile.inv.defaultWidgetPadding;
-        }
-        appWidgetHostViewPreview.setPadding(padding.left, padding.top, padding.right,
-                padding.bottom);
         appWidgetHostViewPreview.updateAppWidget(remoteViews);
     }
 
@@ -271,47 +324,25 @@
         return mAppWidgetHostViewPreview;
     }
 
-    /**
-     * Sets if applying bitmap preview should be deferred. The UI will still load the bitmap, but
-     * will not cause invalidate, so that when deferring is disabled later, all the bitmaps are
-     * ready.
-     * This prevents invalidates while the animation is running.
-     */
-    public void setApplyBitmapDeferred(boolean isDeferred) {
-        if (mApplyBitmapDeferred != isDeferred) {
-            mApplyBitmapDeferred = isDeferred;
-            if (!mApplyBitmapDeferred && mDeferredDrawable != null) {
-                applyPreview(mDeferredDrawable);
-                mDeferredDrawable = null;
-            }
-        }
-    }
-
     public void setAnimatePreview(boolean shouldAnimate) {
         mAnimatePreview = shouldAnimate;
     }
 
-    public void applyPreview(Bitmap bitmap) {
-        FastBitmapDrawable drawable = new FastBitmapDrawable(bitmap);
-        applyPreview(new RoundDrawableWrapper(drawable, mEnforcedCornerRadius));
-    }
+    private void applyPreview(Bitmap bitmap) {
+        if (bitmap != null) {
+            Drawable drawable = new RoundDrawableWrapper(
+                    new FastBitmapDrawable(bitmap), mEnforcedCornerRadius);
 
-    private void applyPreview(Drawable drawable) {
-        if (mApplyBitmapDeferred) {
-            mDeferredDrawable = drawable;
-            return;
-        }
-        if (drawable != null) {
+            // Scale down the preview size if it's wider than the cell.
             float scale = 1f;
-            if (getWidth() > 0 && getHeight() > 0) {
-                // Scale down the preview size if it's wider than the cell.
-                float maxWidth = getWidth();
-                float previewWidth = drawable.getIntrinsicWidth() * mPreviewScale;
+            if (mTargetPreviewWidth > 0) {
+                float maxWidth = mTargetPreviewWidth;
+                float previewWidth = drawable.getIntrinsicWidth() * mPreviewContainerScale;
                 scale = Math.min(maxWidth / previewWidth, 1);
             }
             setContainerSize(
-                    Math.round(drawable.getIntrinsicWidth() * scale),
-                    Math.round(drawable.getIntrinsicHeight() * scale));
+                    Math.round(drawable.getIntrinsicWidth() * scale * mPreviewContainerScale),
+                    Math.round(drawable.getIntrinsicHeight() * scale * mPreviewContainerScale));
             mWidgetImage.setDrawable(drawable);
             mWidgetImage.setVisibility(View.VISIBLE);
             if (mAppWidgetHostViewPreview != null) {
@@ -326,55 +357,61 @@
         } else {
             mWidgetImageContainer.setAlpha(1f);
         }
+        if (mActiveRequest != null) {
+            mActiveRequest.cancel();
+            mActiveRequest = null;
+        }
     }
 
     private void setContainerSize(int width, int height) {
         LayoutParams layoutParams = (LayoutParams) mWidgetImageContainer.getLayoutParams();
-        layoutParams.width = (int) (width * mPreviewScale);
-        layoutParams.height = (int) (height * mPreviewScale);
+        layoutParams.width = width;
+        layoutParams.height = height;
         mWidgetImageContainer.setLayoutParams(layoutParams);
     }
 
-    public void ensurePreview() {
+    /**
+     * Ensures that the preview is already loaded or being loaded. If the preview is not loaded,
+     * it applies the provided cachedPreview. If that is null, it starts a loader and notifies the
+     * callback on successful load.
+     */
+    private void ensurePreviewWithCallback(Consumer<Bitmap> callback,
+            @Nullable Bitmap cachedPreview) {
         if (mAppWidgetHostViewPreview != null) {
-            setContainerSize(mPreviewWidth, mPreviewHeight);
+            int containerWidth = (int) (mTargetPreviewWidth * mPreviewContainerScale);
+            int containerHeight = (int) (mTargetPreviewHeight * mPreviewContainerScale);
+            setContainerSize(containerWidth, containerHeight);
+            if (mAppWidgetHostViewPreview.getChildCount() == 1) {
+                View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
+                ViewGroup.LayoutParams layoutParams = widgetContent.getLayoutParams();
+                // We only scale preview if both the width & height of the outermost view group are
+                // not set to MATCH_PARENT.
+                boolean shouldScale =
+                        layoutParams.width != MATCH_PARENT && layoutParams.height != MATCH_PARENT;
+                if (shouldScale) {
+                    setNoClip(mWidgetImageContainer);
+                    setNoClip(mAppWidgetHostViewPreview);
+                    mAppWidgetHostViewScale = measureAndComputeWidgetPreviewScale();
+                    mAppWidgetHostViewPreview.setScaleToFit(mAppWidgetHostViewScale);
+                }
+            }
             FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
-                    mPreviewWidth, mPreviewHeight, Gravity.FILL);
+                    containerWidth, containerHeight, Gravity.FILL);
             mAppWidgetHostViewPreview.setLayoutParams(params);
             mWidgetImageContainer.addView(mAppWidgetHostViewPreview, /* index= */ 0);
             mWidgetImage.setVisibility(View.GONE);
-            applyPreview((Drawable) null);
+            applyPreview(null);
+            return;
+        }
+        if (cachedPreview != null) {
+            applyPreview(cachedPreview);
             return;
         }
         if (mActiveRequest != null) {
             return;
         }
         mActiveRequest = mWidgetPreviewLoader.loadPreview(
-                BaseActivity.fromContext(getContext()), mItem,
-                new Size(mPreviewWidth, mPreviewHeight),
-                this::applyPreview);
-    }
-
-    /** Sets the widget preview image size in number of cells. */
-    public Size setPreviewSize(WidgetItem widgetItem) {
-        return setPreviewSize(widgetItem, 1f);
-    }
-
-    /** Sets the widget preview image size, in number of cells, and preview scale. */
-    public Size setPreviewSize(WidgetItem widgetItem, float previewScale) {
-        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
-        Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, widgetItem);
-        mPreviewWidth = widgetSize.getWidth();
-        mPreviewHeight = widgetSize.getHeight();
-        mPreviewScale = previewScale;
-        return widgetSize;
-    }
-
-    @Override
-    public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft,
-            int oldTop, int oldRight, int oldBottom) {
-        removeOnLayoutChangeListener(this);
-        ensurePreview();
+                mItem, new Size(mTargetPreviewWidth, mTargetPreviewHeight), callback);
     }
 
     @Override
@@ -390,17 +427,6 @@
         mLongPressHelper.cancelLongPress();
     }
 
-    /**
-     * Helper method to get the string info of the tag.
-     */
-    private String getTagToString() {
-        if (getTag() instanceof PendingAddWidgetInfo ||
-                getTag() instanceof PendingAddShortcutInfo) {
-            return getTag().toString();
-        }
-        return "";
-    }
-
     private static NavigableAppWidgetHostView createAppWidgetHostView(Context context) {
         return new NavigableAppWidgetHostView(context) {
             @Override
@@ -411,12 +437,7 @@
     }
 
     private static boolean isLauncherContext(Context context) {
-        try {
-            Launcher.getLauncher(context);
-            return true;
-        } catch (Exception e) {
-            return false;
-        }
+        return ActivityContext.lookupContext(context) instanceof Launcher;
     }
 
     @Override
@@ -429,4 +450,62 @@
         super.onInitializeAccessibilityNodeInfo(info);
         info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLICK);
     }
+
+    private static void setNoClip(ViewGroup view) {
+        view.setClipChildren(false);
+        view.setClipToPadding(false);
+    }
+
+    private float measureAndComputeWidgetPreviewScale() {
+        if (mAppWidgetHostViewPreview.getChildCount() != 1) {
+            return 1f;
+        }
+
+        // Measure the largest possible width & height that the app widget wants to display.
+        mAppWidgetHostViewPreview.measure(
+                makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED),
+                makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED));
+        if (mRemoteViewsPreview != null) {
+            // If RemoteViews contains multiple sizes, the best fit sized RemoteViews will be
+            // selected in onLayout. To work out the right measurement, let's layout and then
+            // measure again.
+            mAppWidgetHostViewPreview.layout(
+                    /* left= */ 0,
+                    /* top= */ 0,
+                    /* right= */ mTargetPreviewWidth,
+                    /* bottom= */ mTargetPreviewHeight);
+            mAppWidgetHostViewPreview.measure(
+                    makeMeasureSpec(mTargetPreviewWidth, MeasureSpec.UNSPECIFIED),
+                    makeMeasureSpec(mTargetPreviewHeight, MeasureSpec.UNSPECIFIED));
+
+        }
+        View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
+        int appWidgetContentWidth = widgetContent.getMeasuredWidth();
+        int appWidgetContentHeight = widgetContent.getMeasuredHeight();
+        if (appWidgetContentWidth == 0 || appWidgetContentHeight == 0) {
+            return 1f;
+        }
+
+        // If the width / height of the widget content is set to wrap content, overrides the width /
+        // height with the measured dimension. This avoids incorrect measurement after scaling.
+        FrameLayout.LayoutParams layoutParam =
+                (FrameLayout.LayoutParams) widgetContent.getLayoutParams();
+        if (layoutParam.width == WRAP_CONTENT) {
+            layoutParam.width = widgetContent.getMeasuredWidth();
+        }
+        if (layoutParam.height == WRAP_CONTENT) {
+            layoutParam.height = widgetContent.getMeasuredHeight();
+        }
+        widgetContent.setLayoutParams(layoutParam);
+
+        int horizontalPadding = mAppWidgetHostViewPreview.getPaddingStart()
+                + mAppWidgetHostViewPreview.getPaddingEnd();
+        int verticalPadding = mAppWidgetHostViewPreview.getPaddingTop()
+                + mAppWidgetHostViewPreview.getPaddingBottom();
+        return Math.min(
+                (mTargetPreviewWidth - horizontalPadding) * mPreviewContainerScale
+                        / appWidgetContentWidth,
+                (mTargetPreviewHeight - verticalPadding) * mPreviewContainerScale
+                        / appWidgetContentHeight);
+    }
 }
diff --git a/src/com/android/launcher3/widget/WidgetPreviewLoader.java b/src/com/android/launcher3/widget/WidgetPreviewLoader.java
deleted file mode 100644
index ff5c82f..0000000
--- a/src/com/android/launcher3/widget/WidgetPreviewLoader.java
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.widget;
-
-import android.graphics.Bitmap;
-import android.os.CancellationSignal;
-import android.util.Size;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.UiThread;
-
-import com.android.launcher3.BaseActivity;
-import com.android.launcher3.model.WidgetItem;
-
-/** Asynchronous loader of preview bitmaps for {@link WidgetItem}s. */
-public interface WidgetPreviewLoader {
-    /**
-     * Loads a widget preview and calls back to {@code callback} when complete.
-     *
-     * @return a {@link CancellationSignal} which can be used to cancel the request.
-     */
-    @NonNull
-    @UiThread
-    CancellationSignal loadPreview(
-            @NonNull BaseActivity activity,
-            @NonNull WidgetItem item,
-            @NonNull Size previewSize,
-            @NonNull WidgetPreviewLoadedCallback callback);
-
-    /** Callback class for requests to {@link WidgetPreviewLoader}. */
-    interface WidgetPreviewLoadedCallback {
-        void onPreviewLoaded(@NonNull Bitmap preview);
-    }
-}
diff --git a/src/com/android/launcher3/widget/WidgetsBottomSheet.java b/src/com/android/launcher3/widget/WidgetsBottomSheet.java
index dedcc65..bb4638a 100644
--- a/src/com/android/launcher3/widget/WidgetsBottomSheet.java
+++ b/src/com/android/launcher3/widget/WidgetsBottomSheet.java
@@ -37,7 +37,6 @@
 import android.widget.TextView;
 
 import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.R;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.model.WidgetItem;
@@ -72,7 +71,8 @@
 
     private ItemInfo mOriginalItemInfo;
     private final int mMaxTableHeight;
-    private int mMaxHorizontalSpan = 4;
+    private int mMaxHorizontalSpan = DEFAULT_MAX_HORIZONTAL_SPANS;
+    private final int mWidgetCellHorizontalPadding;
 
     private final OnLayoutChangeListener mLayoutChangeListenerToShowTips =
             new OnLayoutChangeListener() {
@@ -117,6 +117,8 @@
         if (!hasSeenEducationTip()) {
             addOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
         }
+        mWidgetCellHorizontalPadding = getResources().getDimensionPixelSize(
+                R.dimen.widget_cell_horizontal_padding);
     }
 
     @Override
@@ -137,10 +139,7 @@
     private boolean updateMaxSpansPerRow() {
         if (getMeasuredWidth() == 0) return false;
 
-        int paddingPx = 2 * getResources().getDimensionPixelOffset(
-                R.dimen.widget_cell_horizontal_padding);
-        int maxHorizontalSpan = findViewById(R.id.widgets_table).getMeasuredWidth()
-                / (mActivityContext.getDeviceProfile().cellWidthPx + paddingPx);
+        int maxHorizontalSpan = computeMaxHorizontalSpans(mContent, mWidgetCellHorizontalPadding);
         if (mMaxHorizontalSpan != maxHorizontalSpan) {
             // Ensure the table layout is showing widgets in the right column after measure.
             mMaxHorizontalSpan = maxHorizontalSpan;
@@ -199,11 +198,7 @@
             tableRow.setGravity(Gravity.TOP);
             row.forEach(widgetItem -> {
                 WidgetCell widget = addItemCell(tableRow);
-                widget.setPreviewSize(widgetItem);
-                widget.applyFromCellItem(widgetItem, LauncherAppState.getInstance(mActivityContext)
-                        .getWidgetCache());
-                widget.ensurePreview();
-                widget.setVisibility(View.VISIBLE);
+                widget.applyFromCellItem(widgetItem);
             });
             widgetsTable.addView(tableRow);
         });
@@ -272,6 +267,14 @@
     }
 
     @Override
+    protected void onContentHorizontalMarginChanged(int contentHorizontalMarginInPx) {
+        ViewGroup.MarginLayoutParams layoutParams =
+                ((ViewGroup.MarginLayoutParams) findViewById(R.id.widgets_table).getLayoutParams());
+        layoutParams.setMarginStart(contentHorizontalMarginInPx);
+        layoutParams.setMarginEnd(contentHorizontalMarginInPx);
+    }
+
+    @Override
     protected Pair<View, String> getAccessibilityTarget() {
         return Pair.create(findViewById(R.id.title),  getContext().getString(
                 mIsOpen ? R.string.widgets_list : R.string.widgets_list_closed));
diff --git a/src/com/android/launcher3/widget/dragndrop/AppWidgetHostViewDragListener.java b/src/com/android/launcher3/widget/dragndrop/AppWidgetHostViewDragListener.java
index 4a60983..3e54b33 100644
--- a/src/com/android/launcher3/widget/dragndrop/AppWidgetHostViewDragListener.java
+++ b/src/com/android/launcher3/widget/dragndrop/AppWidgetHostViewDragListener.java
@@ -24,7 +24,6 @@
 /** A drag listener of {@link LauncherAppWidgetHostView}. */
 public final class AppWidgetHostViewDragListener implements DragController.DragListener {
     private final Launcher mLauncher;
-    private DropTarget.DragObject mDragObject;
     private LauncherAppWidgetHostView mAppWidgetHostView;
 
     public AppWidgetHostViewDragListener(Launcher launcher) {
@@ -34,9 +33,8 @@
     @Override
     public void onDragStart(DropTarget.DragObject dragObject, DragOptions unused) {
         if (dragObject.dragView.getContentView() instanceof LauncherAppWidgetHostView) {
-            mDragObject = dragObject;
             mAppWidgetHostView = (LauncherAppWidgetHostView) dragObject.dragView.getContentView();
-            mAppWidgetHostView.startDrag(this);
+            mAppWidgetHostView.startDrag();
         } else {
             mLauncher.getDragController().removeDragListener(this);
         }
@@ -47,11 +45,4 @@
         mAppWidgetHostView.endDrag();
         mLauncher.getDragController().removeDragListener(this);
     }
-
-    /** Notifies when there is a content change in the drag view. */
-    public void onDragContentChanged() {
-        if (mDragObject.dragView != null) {
-            mDragObject.dragView.invalidate();
-        }
-    }
 }
diff --git a/src/com/android/launcher3/widget/model/WidgetListSpaceEntry.java b/src/com/android/launcher3/widget/model/WidgetListSpaceEntry.java
new file mode 100644
index 0000000..e62425f
--- /dev/null
+++ b/src/com/android/launcher3/widget/model/WidgetListSpaceEntry.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.widget.model;
+
+import com.android.launcher3.model.data.PackageItemInfo;
+
+import java.util.Collections;
+
+/**
+ * Entry representing the top empty space
+ */
+public class WidgetListSpaceEntry extends WidgetsListBaseEntry {
+
+    public WidgetListSpaceEntry() {
+        super(new PackageItemInfo(""), "", Collections.EMPTY_LIST);
+        mPkgItem.title = "";
+    }
+
+    @Override
+    public int getRank() {
+        return RANK_WIDGETS_TOP_SPACE;
+    }
+}
diff --git a/src/com/android/launcher3/widget/model/WidgetsListBaseEntry.java b/src/com/android/launcher3/widget/model/WidgetsListBaseEntry.java
index abc79ff..1d1c9dc 100644
--- a/src/com/android/launcher3/widget/model/WidgetsListBaseEntry.java
+++ b/src/com/android/launcher3/widget/model/WidgetsListBaseEntry.java
@@ -73,11 +73,13 @@
     }
 
     @Retention(SOURCE)
-    @IntDef({RANK_WIDGETS_LIST_HEADER, RANK_WIDGETS_LIST_SEARCH_HEADER, RANK_WIDGETS_LIST_CONTENT})
+    @IntDef({RANK_WIDGETS_TOP_SPACE, RANK_WIDGETS_LIST_HEADER, RANK_WIDGETS_LIST_SEARCH_HEADER,
+            RANK_WIDGETS_LIST_CONTENT})
     public @interface Rank {
     }
 
-    public static final int RANK_WIDGETS_LIST_HEADER = 1;
-    public static final int RANK_WIDGETS_LIST_SEARCH_HEADER = 2;
-    public static final int RANK_WIDGETS_LIST_CONTENT = 3;
+    public static final int RANK_WIDGETS_TOP_SPACE = 1;
+    public static final int RANK_WIDGETS_LIST_HEADER = 2;
+    public static final int RANK_WIDGETS_LIST_SEARCH_HEADER = 3;
+    public static final int RANK_WIDGETS_LIST_CONTENT = 4;
 }
diff --git a/src/com/android/launcher3/widget/picker/SearchAndRecommendationsScrollController.java b/src/com/android/launcher3/widget/picker/SearchAndRecommendationsScrollController.java
index 6643779..716dcf3 100644
--- a/src/com/android/launcher3/widget/picker/SearchAndRecommendationsScrollController.java
+++ b/src/com/android/launcher3/widget/picker/SearchAndRecommendationsScrollController.java
@@ -15,297 +15,148 @@
  */
 package com.android.launcher3.widget.picker;
 
-import android.animation.ValueAnimator;
-import android.graphics.Point;
+import static com.android.launcher3.anim.AnimatorListeners.forEndCallback;
+
+import android.animation.Animator;
+import android.animation.ObjectAnimator;
+import android.util.FloatProperty;
 import android.view.MotionEvent;
 import android.view.View;
-import android.view.ViewGroup.MarginLayoutParams;
-import android.widget.RelativeLayout;
+import android.view.ViewGroup;
 import android.widget.TextView;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
 
-import com.android.launcher3.views.RecyclerViewFastScroller;
-import com.android.launcher3.widget.picker.WidgetsFullSheet.SearchAndRecommendationViewHolder;
-import com.android.launcher3.workprofile.PersonalWorkPagedView;
+import com.android.launcher3.R;
+import com.android.launcher3.widget.picker.WidgetsSpaceViewHolderBinder.EmptySpaceView;
+import com.android.launcher3.widget.picker.search.WidgetsSearchBar;
 
 /**
  * A controller which measures & updates {@link WidgetsFullSheet}'s views padding, margin and
  * vertical displacement upon scrolling.
  */
 final class SearchAndRecommendationsScrollController implements
-        RecyclerViewFastScroller.OnFastScrollChangeListener, ValueAnimator.AnimatorUpdateListener {
-    private final boolean mHasWorkProfile;
-    private final SearchAndRecommendationViewHolder mViewHolder;
-    private final View mSearchAndRecommendationViewParent;
-    private final WidgetsRecyclerView mPrimaryRecyclerView;
-    private final WidgetsRecyclerView mSearchRecyclerView;
-    private final TextView mNoWidgetsView;
-    private final int mTabsHeight;
-    private final ValueAnimator mAnimator = ValueAnimator.ofInt(0, 0);
-    private final Point mTempOffset = new Point();
-    private int mBottomInset;
+        RecyclerView.OnChildAttachStateChangeListener {
 
-    // The following are only non null if mHasWorkProfile is true.
-    @Nullable private final WidgetsRecyclerView mWorkRecyclerView;
-    @Nullable private final View mPrimaryWorkTabsView;
-    @Nullable private final PersonalWorkPagedView mPrimaryWorkViewPager;
+    private static final FloatProperty<SearchAndRecommendationsScrollController> SCROLL_OFFSET =
+            new FloatProperty<SearchAndRecommendationsScrollController>("scrollAnimOffset") {
+        @Override
+        public void setValue(SearchAndRecommendationsScrollController controller, float offset) {
+            controller.mScrollOffset = offset;
+            controller.updateHeaderScroll();
+        }
+
+        @Override
+        public Float get(SearchAndRecommendationsScrollController controller) {
+            return controller.mScrollOffset;
+        }
+    };
+
+    private static final MotionEventProxyMethod INTERCEPT_PROXY = ViewGroup::onInterceptTouchEvent;
+    private static final MotionEventProxyMethod TOUCH_PROXY = ViewGroup::onTouchEvent;
+
+    final SearchAndRecommendationsView mContainer;
+    final View mSearchBarContainer;
+    final WidgetsSearchBar mSearchBar;
+    final TextView mHeaderTitle;
+    final WidgetsRecommendationTableLayout mRecommendedWidgetsTable;
+    @Nullable final View mTabBar;
 
     private WidgetsRecyclerView mCurrentRecyclerView;
-    private int mCurrentRecyclerViewScrollY = 0;
+    private EmptySpaceView mCurrentEmptySpaceView;
 
-    private OnContentChangeListener mOnContentChangeListener = () -> onScrollChanged();
-
-    /**
-     * The vertical distance, in pixels, until the search is pinned at the top of the screen when
-     * the user scrolls down the recycler view.
-     */
-    private int mCollapsibleHeightForSearch = 0;
-    /**
-     * The vertical distance, in pixels, until the recommendation table disappears from the top of
-     * the screen when the user scrolls down the recycler view.
-     */
-    private int mCollapsibleHeightForRecommendation = 0;
-    /**
-     * The vertical distance, in pixels, until the tabs is pinned at the top of the screen when the
-     * user scrolls down the recycler view.
-     *
-     * <p>Always 0 if there is no work profile.
-     */
-    private int mCollapsibleHeightForTabs = 0;
+    private float mLastScroll = 0;
+    private float mScrollOffset = 0;
+    private Animator mOffsetAnimator;
 
     private boolean mShouldForwardToRecyclerView = false;
 
+    private int mHeaderHeight;
+
     SearchAndRecommendationsScrollController(
-            boolean hasWorkProfile,
-            int tabsHeight,
-            SearchAndRecommendationViewHolder viewHolder,
-            WidgetsRecyclerView primaryRecyclerView,
-            @Nullable WidgetsRecyclerView workRecyclerView,
-            WidgetsRecyclerView searchRecyclerView,
-            @Nullable View personalWorkTabsView,
-            @Nullable PersonalWorkPagedView primaryWorkViewPager,
-            TextView noWidgetsView) {
-        mHasWorkProfile = hasWorkProfile;
-        mViewHolder = viewHolder;
-        mViewHolder.mContainer.setSearchAndRecommendationScrollController(this);
-        mSearchAndRecommendationViewParent = (View) mViewHolder.mContainer.getParent();
-        mPrimaryRecyclerView = primaryRecyclerView;
-        mWorkRecyclerView = workRecyclerView;
-        mSearchRecyclerView = searchRecyclerView;
-        mPrimaryWorkTabsView = personalWorkTabsView;
-        mPrimaryWorkViewPager = primaryWorkViewPager;
-        mTabsHeight = tabsHeight;
-        mNoWidgetsView = noWidgetsView;
-        setCurrentRecyclerView(mPrimaryRecyclerView, /* animateReset= */ false);
+            SearchAndRecommendationsView searchAndRecommendationContainer) {
+        mContainer = searchAndRecommendationContainer;
+        mSearchBarContainer = mContainer.findViewById(R.id.search_bar_container);
+        mSearchBar = mContainer.findViewById(R.id.widgets_search_bar);
+        mHeaderTitle = mContainer.findViewById(R.id.title);
+        mRecommendedWidgetsTable = mContainer.findViewById(R.id.recommended_widget_table);
+        mTabBar = mContainer.findViewById(R.id.tabs);
+
+        mContainer.setSearchAndRecommendationScrollController(this);
     }
 
     public void setCurrentRecyclerView(WidgetsRecyclerView currentRecyclerView) {
-        setCurrentRecyclerView(currentRecyclerView, /* animateReset= */ true);
-    }
-
-    /** Sets the current active {@link WidgetsRecyclerView}. */
-    private void setCurrentRecyclerView(WidgetsRecyclerView currentRecyclerView,
-            boolean animateReset) {
-        if (mCurrentRecyclerView == currentRecyclerView) {
-            return;
-        }
+        boolean animateReset = mCurrentRecyclerView != null;
         if (mCurrentRecyclerView != null) {
-            mCurrentRecyclerView.setOnContentChangeListener(null);
+            mCurrentRecyclerView.removeOnChildAttachStateChangeListener(this);
         }
         mCurrentRecyclerView = currentRecyclerView;
-        mCurrentRecyclerView.setOnContentChangeListener(mOnContentChangeListener);
+        mCurrentRecyclerView.addOnChildAttachStateChangeListener(this);
+        findCurrentEmptyView();
         reset(animateReset);
     }
 
-    /**
-     * Updates padding of {@link WidgetsFullSheet} contents to include {@code bottomInset} wherever
-     * necessary.
-     */
-    public boolean updateBottomInset(int bottomInset) {
-        mBottomInset = bottomInset;
-        return updateMarginAndPadding();
+    public int getHeaderHeight() {
+        return mHeaderHeight;
+    }
+
+    private void updateHeaderScroll() {
+        mLastScroll = getCurrentScroll();
+        mHeaderTitle.setTranslationY(mLastScroll);
+        mRecommendedWidgetsTable.setTranslationY(mLastScroll);
+
+        float searchYDisplacement = Math.max(mLastScroll, -mSearchBarContainer.getTop());
+        mSearchBarContainer.setTranslationY(searchYDisplacement);
+
+        if (mTabBar != null) {
+            float tabsDisplacement = Math.max(mLastScroll, -mTabBar.getTop()
+                    + mSearchBarContainer.getHeight());
+            mTabBar.setTranslationY(tabsDisplacement);
+        }
+    }
+
+    private float getCurrentScroll() {
+        return mScrollOffset + (mCurrentEmptySpaceView == null ? 0 : mCurrentEmptySpaceView.getY());
     }
 
     /**
-     * Updates the margin and padding of {@link WidgetsFullSheet} to accumulate collapsible views.
+     * Updates the scrollable header height
      *
-     * @return {@code true} if margins or/and padding of views in the search and recommendations
-     * container have been updated.
+     * @return {@code true} if the header height or dependent property changed.
      */
-    public boolean updateMarginAndPadding() {
-        boolean hasMarginOrPaddingUpdated = false;
-        mCollapsibleHeightForSearch = measureHeightWithVerticalMargins(mViewHolder.mHeaderTitle);
-        mCollapsibleHeightForRecommendation =
-                measureHeightWithVerticalMargins(mViewHolder.mHeaderTitle)
-                        + measureHeightWithVerticalMargins(mViewHolder.mCollapseHandle)
-                        + measureHeightWithVerticalMargins((View) mViewHolder.mSearchBarContainer)
-                        + measureHeightWithVerticalMargins(mViewHolder.mRecommendedWidgetsTable);
+    public boolean updateHeaderHeight() {
+        boolean hasSizeUpdated = false;
 
-        int topContainerHeight = measureHeightWithVerticalMargins(mViewHolder.mContainer);
-        int noWidgetsViewHeight =  topContainerHeight - mBottomInset;
-
-        if (mHasWorkProfile) {
-            mCollapsibleHeightForTabs = measureHeightWithVerticalMargins(mViewHolder.mHeaderTitle)
-                    + measureHeightWithVerticalMargins(mViewHolder.mRecommendedWidgetsTable);
-            // In a work profile setup, the full widget sheet contains the following views:
-            //           ------- (pinned)           -|
-            //          Widgets (collapsible)       -|---> LinearLayout for search & recommendations
-            //          Search bar (pinned)         -|
-            //  Widgets recommendation (collapsible)-|
-            //      Personal | Work (pinned)
-            //           View Pager
-            //
-            // Views after the search & recommendations are not bound by RelativelyLayout param.
-            // To position them on the expected location, padding & margin are added to these views
-
-            // Tabs should have a padding of the height of the search & recommendations container.
-            RelativeLayout.LayoutParams tabsLayoutParams =
-                    (RelativeLayout.LayoutParams) mPrimaryWorkTabsView.getLayoutParams();
-            tabsLayoutParams.topMargin = topContainerHeight;
-            mPrimaryWorkTabsView.setLayoutParams(tabsLayoutParams);
-
-            // Instead of setting the top offset directly, we split the top offset into two values:
-            // 1. topOffsetAfterAllViewsCollapsed: this is the top offset after all collapsible
-            //    views are no longer visible on the screen.
-            //    This value is set as the margin for the view pager.
-            // 2. mMaxCollapsibleDistance
-            //    This value is set as the padding for the recycler views in order to work with
-            //    clipToPadding="false", which is an attribute for not showing top / bottom padding
-            //    when a recycler view has not reached the top or bottom of the list.
-            //    e.g. a list of 10 entries, only 3 entries are visible at a time.
-            //         case 1: recycler view is scrolled to the top. Top padding is visible/
-            //         (top padding)
-            //         item 1
-            //         item 2
-            //         item 3
-            //
-            //         case 2: recycler view is scrolled to the middle. No padding is visible.
-            //         item 4
-            //         item 5
-            //         item 6
-            //
-            //         case 3: recycler view is scrolled to the end. bottom padding is visible.
-            //         item 8
-            //         item 9
-            //         item 10
-            //         (bottom padding): not set in this case.
-            //
-            // When the views are first inflated, the sum of topOffsetAfterAllViewsCollapsed and
-            // mMaxCollapsibleDistance should equal to the top container height.
-            int topOffsetAfterAllViewsCollapsed =
-                    topContainerHeight + mTabsHeight - mCollapsibleHeightForTabs;
-
-            if (mPrimaryWorkTabsView.getVisibility() == View.VISIBLE) {
-                noWidgetsViewHeight += mTabsHeight;
-            }
-
-            RelativeLayout.LayoutParams viewPagerLayoutParams =
-                    (RelativeLayout.LayoutParams) mPrimaryWorkViewPager.getLayoutParams();
-            if (viewPagerLayoutParams.topMargin != topOffsetAfterAllViewsCollapsed) {
-                viewPagerLayoutParams.topMargin = topOffsetAfterAllViewsCollapsed;
-                mPrimaryWorkViewPager.setLayoutParams(viewPagerLayoutParams);
-                hasMarginOrPaddingUpdated = true;
-            }
-
-            if (mPrimaryRecyclerView.getPaddingTop() != mCollapsibleHeightForTabs) {
-                mPrimaryRecyclerView.setPadding(
-                        mPrimaryRecyclerView.getPaddingLeft(),
-                        mCollapsibleHeightForTabs,
-                        mPrimaryRecyclerView.getPaddingRight(),
-                        mPrimaryRecyclerView.getPaddingBottom());
-                hasMarginOrPaddingUpdated = true;
-            }
-            if (mWorkRecyclerView.getPaddingTop() != mCollapsibleHeightForTabs) {
-                mWorkRecyclerView.setPadding(
-                        mWorkRecyclerView.getPaddingLeft(),
-                        mCollapsibleHeightForTabs,
-                        mWorkRecyclerView.getPaddingRight(),
-                        mWorkRecyclerView.getPaddingBottom());
-                hasMarginOrPaddingUpdated = true;
-            }
-        } else {
-            if (mPrimaryRecyclerView.getPaddingTop() != topContainerHeight) {
-                mPrimaryRecyclerView.setPadding(
-                        mPrimaryRecyclerView.getPaddingLeft(),
-                        topContainerHeight,
-                        mPrimaryRecyclerView.getPaddingRight(),
-                        mPrimaryRecyclerView.getPaddingBottom());
-                hasMarginOrPaddingUpdated = true;
-            }
-        }
-        if (mSearchRecyclerView.getPaddingTop() != topContainerHeight) {
-            mSearchRecyclerView.setPadding(
-                    mSearchRecyclerView.getPaddingLeft(),
-                    topContainerHeight,
-                    mSearchRecyclerView.getPaddingRight(),
-                    mSearchRecyclerView.getPaddingBottom());
-            hasMarginOrPaddingUpdated = true;
-        }
-        if (mNoWidgetsView.getPaddingTop() != noWidgetsViewHeight) {
-            mNoWidgetsView.setPadding(
-                    mNoWidgetsView.getPaddingLeft(),
-                    noWidgetsViewHeight,
-                    mNoWidgetsView.getPaddingRight(),
-                    mNoWidgetsView.getPaddingBottom());
-            hasMarginOrPaddingUpdated = true;
-        }
-        return hasMarginOrPaddingUpdated;
-    }
-
-    @Override
-    public void onScrollChanged() {
-        int recyclerViewYOffset = mCurrentRecyclerView.getCurrentScrollY();
-        if (recyclerViewYOffset < 0) return;
-        mCurrentRecyclerViewScrollY = recyclerViewYOffset;
-        if (mAnimator.isStarted()) {
-            mAnimator.cancel();
-        }
-        applyVerticalTransition();
-    }
-
-    /**
-     * Changes the displacement of collapsible views (e.g. title & widget recommendations) and fixed
-     * views (e.g. recycler views, tabs) upon scrolling / content changes in the recycler view.
-     */
-    private void applyVerticalTransition() {
-        if (mCollapsibleHeightForRecommendation > 0) {
-            int yDisplacement = Math.max(-mCurrentRecyclerViewScrollY,
-                    -mCollapsibleHeightForRecommendation);
-            mViewHolder.mHeaderTitle.setTranslationY(yDisplacement);
-            mViewHolder.mRecommendedWidgetsTable.setTranslationY(yDisplacement);
+        int headerHeight = mContainer.getMeasuredHeight();
+        if (headerHeight != mHeaderHeight) {
+            mHeaderHeight = headerHeight;
+            hasSizeUpdated = true;
         }
 
-        if (mCollapsibleHeightForSearch > 0) {
-            int searchYDisplacement = Math.max(-mCurrentRecyclerViewScrollY,
-                    -mCollapsibleHeightForSearch);
-            mViewHolder.mSearchBarContainer.setTranslationY(searchYDisplacement);
+        if (mCurrentEmptySpaceView != null
+                && mCurrentEmptySpaceView.setFixedHeight(mHeaderHeight)) {
+            hasSizeUpdated = true;
         }
-
-        if (mHasWorkProfile && mCollapsibleHeightForTabs > 0) {
-            int yDisplacementForTabs = Math.max(-mCurrentRecyclerViewScrollY,
-                    -mCollapsibleHeightForTabs);
-            mPrimaryWorkTabsView.setTranslationY(yDisplacementForTabs);
-        }
+        return hasSizeUpdated;
     }
 
     /** Resets any previous view translation. */
     public void reset(boolean animate) {
-        if (mCurrentRecyclerViewScrollY == 0) {
-            return;
-        }
-        if (mAnimator.isStarted()) {
-            mAnimator.cancel();
+        if (mOffsetAnimator != null) {
+            mOffsetAnimator.cancel();
+            mOffsetAnimator = null;
         }
 
-        if (animate) {
-            mAnimator.setIntValues(mCurrentRecyclerViewScrollY, 0);
-            mAnimator.addUpdateListener(this);
-            mAnimator.setDuration(300);
-            mAnimator.start();
+        mScrollOffset = 0;
+        if (!animate) {
+            updateHeaderScroll();
         } else {
-            mCurrentRecyclerViewScrollY = 0;
-            applyVerticalTransition();
+            float startValue = mLastScroll - getCurrentScroll();
+            mOffsetAnimator = ObjectAnimator.ofFloat(this, SCROLL_OFFSET, startValue, 0);
+            mOffsetAnimator.addListener(forEndCallback(() -> mOffsetAnimator = null));
+            mOffsetAnimator.start();
         }
     }
 
@@ -313,61 +164,60 @@
      * Returns {@code true} if a touch event should be intercepted by this controller.
      */
     public boolean onInterceptTouchEvent(MotionEvent event) {
-        calculateMotionEventOffset(mTempOffset);
-        event.offsetLocation(mTempOffset.x, mTempOffset.y);
-        try {
-            mShouldForwardToRecyclerView = mCurrentRecyclerView.onInterceptTouchEvent(event);
-            return mShouldForwardToRecyclerView;
-        } finally {
-            event.offsetLocation(-mTempOffset.x, -mTempOffset.y);
-        }
+        return (mShouldForwardToRecyclerView = proxyMotionEvent(event, INTERCEPT_PROXY));
     }
 
     /**
      * Returns {@code true} if this controller has intercepted and consumed a touch event.
      */
     public boolean onTouchEvent(MotionEvent event) {
-        if (mShouldForwardToRecyclerView) {
-            calculateMotionEventOffset(mTempOffset);
-            event.offsetLocation(mTempOffset.x, mTempOffset.y);
-            try {
-                return mCurrentRecyclerView.onTouchEvent(event);
-            } finally {
-                event.offsetLocation(-mTempOffset.x, -mTempOffset.y);
-            }
-        }
-        return false;
+        return mShouldForwardToRecyclerView && proxyMotionEvent(event, TOUCH_PROXY);
     }
 
-    private void calculateMotionEventOffset(Point p) {
-        p.x = mViewHolder.mContainer.getLeft() - mCurrentRecyclerView.getLeft()
-                - mSearchAndRecommendationViewParent.getLeft();
-        p.y = mViewHolder.mContainer.getTop() - mCurrentRecyclerView.getTop()
-                - mSearchAndRecommendationViewParent.getTop();
-    }
-
-    /** private the height, in pixel, + the vertical margins of a given view. */
-    private static int measureHeightWithVerticalMargins(View view) {
-        if (view.getVisibility() != View.VISIBLE) {
-            return 0;
+    private boolean proxyMotionEvent(MotionEvent event, MotionEventProxyMethod method) {
+        float dx = mCurrentRecyclerView.getLeft() - mContainer.getLeft();
+        float dy = mCurrentRecyclerView.getTop() - mContainer.getTop();
+        event.offsetLocation(dx, dy);
+        try {
+            return method.proxyEvent(mCurrentRecyclerView, event);
+        } finally {
+            event.offsetLocation(-dx, -dy);
         }
-        MarginLayoutParams marginLayoutParams = (MarginLayoutParams) view.getLayoutParams();
-        return view.getMeasuredHeight() + marginLayoutParams.bottomMargin
-                + marginLayoutParams.topMargin;
     }
 
     @Override
-    public void onAnimationUpdate(ValueAnimator animation) {
-        mCurrentRecyclerViewScrollY = (Integer) animation.getAnimatedValue();
-        applyVerticalTransition();
+    public void onChildViewAttachedToWindow(@NonNull View view) {
+        if (view instanceof EmptySpaceView) {
+            findCurrentEmptyView();
+        }
     }
 
-    /**
-     * A listener to be notified when there is a content change in the recycler view that may affect
-     * the relative position of the search and recommendation container.
-     */
-    public interface OnContentChangeListener {
-        /** Notifies a content change in the recycler view. */
-        void onContentChanged();
+    @Override
+    public void onChildViewDetachedFromWindow(@NonNull View view) {
+        if (view == mCurrentEmptySpaceView) {
+            findCurrentEmptyView();
+        }
+    }
+
+    private void findCurrentEmptyView() {
+        if (mCurrentEmptySpaceView != null) {
+            mCurrentEmptySpaceView.setOnYChangeCallback(null);
+            mCurrentEmptySpaceView = null;
+        }
+        int childCount = mCurrentRecyclerView.getChildCount();
+        for (int i = 0; i < childCount; i++) {
+            View view = mCurrentRecyclerView.getChildAt(i);
+            if (view instanceof EmptySpaceView) {
+                mCurrentEmptySpaceView = (EmptySpaceView) view;
+                mCurrentEmptySpaceView.setFixedHeight(getHeaderHeight());
+                mCurrentEmptySpaceView.setOnYChangeCallback(this::updateHeaderScroll);
+                return;
+            }
+        }
+    }
+
+    private interface MotionEventProxyMethod {
+
+        boolean proxyEvent(ViewGroup view, MotionEvent event);
     }
 }
diff --git a/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java b/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java
index f2fee0a..09f0299 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsFullSheet.java
@@ -27,6 +27,7 @@
 import android.content.Context;
 import android.content.pm.LauncherApps;
 import android.content.res.Configuration;
+import android.content.res.Resources;
 import android.graphics.Rect;
 import android.os.Process;
 import android.os.UserHandle;
@@ -56,13 +57,12 @@
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.views.ArrowTipView;
 import com.android.launcher3.views.RecyclerViewFastScroller;
-import com.android.launcher3.views.TopRoundedCornerView;
+import com.android.launcher3.views.SpringRelativeLayout;
 import com.android.launcher3.views.WidgetsEduView;
 import com.android.launcher3.widget.BaseWidgetSheet;
 import com.android.launcher3.widget.LauncherAppWidgetHost.ProviderChangedListener;
 import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 import com.android.launcher3.widget.picker.search.SearchModeListener;
-import com.android.launcher3.widget.picker.search.WidgetsSearchBar;
 import com.android.launcher3.widget.util.WidgetsTableUtils;
 import com.android.launcher3.workprofile.PersonalWorkPagedView;
 import com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip.OnActivePageChangedListener;
@@ -78,7 +78,6 @@
 public class WidgetsFullSheet extends BaseWidgetSheet
         implements ProviderChangedListener, OnActivePageChangedListener,
         WidgetsRecyclerView.HeaderViewDimensionsProvider, SearchModeListener {
-    private static final String TAG = WidgetsFullSheet.class.getSimpleName();
 
     private static final long DEFAULT_OPEN_DURATION = 267;
     private static final long FADE_IN_DURATION = 150;
@@ -148,19 +147,15 @@
             };
 
     private final int mTabsHeight;
-    private final int mViewPagerTopPadding;
-    private final int mSearchAndRecommendationContainerBottomMargin;
-    private final int mWidgetCellHorizontalPadding;
+    private final int mWidgetSheetContentHorizontalPadding;
 
     @Nullable private WidgetsRecyclerView mCurrentWidgetsRecyclerView;
     @Nullable private PersonalWorkPagedView mViewPager;
     private boolean mIsInSearchMode;
     private boolean mIsNoWidgetsViewNeeded;
-    private int mMaxSpansPerRow = 4;
-    private View mTabsView;
+    private int mMaxSpansPerRow = DEFAULT_MAX_HORIZONTAL_SPANS;
     private TextView mNoWidgetsView;
-    private SearchAndRecommendationViewHolder mSearchAndRecommendationViewHolder;
-    private SearchAndRecommendationsScrollController mSearchAndRecommendationsScrollController;
+    private SearchAndRecommendationsScrollController mSearchScrollController;
 
     public WidgetsFullSheet(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
@@ -168,19 +163,12 @@
         mAdapters.put(AdapterHolder.PRIMARY, new AdapterHolder(AdapterHolder.PRIMARY));
         mAdapters.put(AdapterHolder.WORK, new AdapterHolder(AdapterHolder.WORK));
         mAdapters.put(AdapterHolder.SEARCH, new AdapterHolder(AdapterHolder.SEARCH));
+
+        Resources resources = getResources();
         mTabsHeight = mHasWorkProfile
-                ? getContext().getResources()
-                        .getDimensionPixelSize(R.dimen.all_apps_header_pill_height)
+                ? resources.getDimensionPixelSize(R.dimen.all_apps_header_pill_height)
                 : 0;
-        mViewPagerTopPadding = mHasWorkProfile
-                ? getContext().getResources()
-                    .getDimensionPixelSize(R.dimen.widget_picker_view_pager_top_padding)
-                : 0;
-        mSearchAndRecommendationContainerBottomMargin = getContext().getResources()
-                .getDimensionPixelSize(mHasWorkProfile
-                        ? R.dimen.search_and_recommended_widgets_container_small_bottom_margin
-                        : R.dimen.search_and_recommended_widgets_container_bottom_margin);
-        mWidgetCellHorizontalPadding = 2 * getResources().getDimensionPixelOffset(
+        mWidgetSheetContentHorizontalPadding = 2 * resources.getDimensionPixelSize(
                 R.dimen.widget_cell_horizontal_padding);
     }
 
@@ -192,12 +180,11 @@
     protected void onFinishInflate() {
         super.onFinishInflate();
         mContent = findViewById(R.id.container);
-        TopRoundedCornerView springLayout = (TopRoundedCornerView) mContent;
 
         LayoutInflater layoutInflater = LayoutInflater.from(getContext());
         int contentLayoutRes = mHasWorkProfile ? R.layout.widgets_full_sheet_paged_view
                 : R.layout.widgets_full_sheet_recyclerview;
-        layoutInflater.inflate(contentLayoutRes, springLayout, true);
+        layoutInflater.inflate(contentLayoutRes, mContent, true);
 
         RecyclerViewFastScroller fastScroller = findViewById(R.id.fast_scroller);
         mAdapters.get(AdapterHolder.PRIMARY).setup(findViewById(R.id.primary_widgets_list_view));
@@ -207,7 +194,6 @@
             mViewPager.initParentViews(this);
             mViewPager.getPageIndicator().setOnActivePageChangedListener(this);
             mViewPager.getPageIndicator().setActiveMarker(AdapterHolder.PRIMARY);
-            mTabsView = findViewById(R.id.tabs);
             findViewById(R.id.tab_personal)
                     .setOnClickListener((View view) -> mViewPager.snapToPage(0));
             findViewById(R.id.tab_work)
@@ -218,33 +204,18 @@
             mViewPager = null;
         }
 
-        layoutInflater.inflate(R.layout.widgets_full_sheet_search_and_recommendations, springLayout,
-                true);
         mNoWidgetsView = findViewById(R.id.no_widgets_text);
-        mSearchAndRecommendationViewHolder = new SearchAndRecommendationViewHolder(
+        mSearchScrollController = new SearchAndRecommendationsScrollController(
                 findViewById(R.id.search_and_recommendations_container));
-        TopRoundedCornerView.LayoutParams layoutParams =
-                (TopRoundedCornerView.LayoutParams)
-                        mSearchAndRecommendationViewHolder.mContainer.getLayoutParams();
-        layoutParams.bottomMargin = mSearchAndRecommendationContainerBottomMargin;
-        mSearchAndRecommendationViewHolder.mContainer.setLayoutParams(layoutParams);
-        mSearchAndRecommendationsScrollController = new SearchAndRecommendationsScrollController(
-                mHasWorkProfile,
-                mTabsHeight,
-                mSearchAndRecommendationViewHolder,
-                findViewById(R.id.primary_widgets_list_view),
-                mHasWorkProfile ? findViewById(R.id.work_widgets_list_view) : null,
-                findViewById(R.id.search_widgets_list_view),
-                mTabsView,
-                mViewPager,
-                mNoWidgetsView);
-        fastScroller.setOnFastScrollChangeListener(mSearchAndRecommendationsScrollController);
-
+        mSearchScrollController.setCurrentRecyclerView(
+                findViewById(R.id.primary_widgets_list_view));
+        mSearchScrollController.mRecommendedWidgetsTable.setWidgetCellLongClickListener(this);
+        mSearchScrollController.mRecommendedWidgetsTable.setWidgetCellOnClickListener(this);
 
         onRecommendedWidgetsBound();
         onWidgetsBound();
 
-        mSearchAndRecommendationViewHolder.mSearchBar.initialize(
+        mSearchScrollController.mSearchBar.initialize(
                 mActivityContext.getPopupDataProvider(), /* searchModeListener= */ this);
 
         setUpEducationViewsIfNeeded();
@@ -268,12 +239,13 @@
             reset();
             resetExpandedHeaders();
             mCurrentWidgetsRecyclerView = recyclerView;
-            mSearchAndRecommendationsScrollController.setCurrentRecyclerView(recyclerView);
+            mSearchScrollController.setCurrentRecyclerView(recyclerView);
         }
     }
 
     private void updateRecyclerViewVisibility(AdapterHolder adapterHolder) {
-        boolean isWidgetAvailable = adapterHolder.mWidgetsListAdapter.getItemCount() > 0;
+        // The first item is always an empty space entry. Look for any more items.
+        boolean isWidgetAvailable = adapterHolder.mWidgetsListAdapter.hasVisibleEntries();
         adapterHolder.mWidgetsRecyclerView.setVisibility(isWidgetAvailable ? VISIBLE : GONE);
 
         mNoWidgetsView.setText(
@@ -289,7 +261,7 @@
             mAdapters.get(AdapterHolder.WORK).mWidgetsRecyclerView.scrollToTop();
         }
         mAdapters.get(AdapterHolder.SEARCH).mWidgetsRecyclerView.scrollToTop();
-        mSearchAndRecommendationsScrollController.reset(/* animate= */ true);
+        mSearchScrollController.reset(/* animate= */ true);
     }
 
     @VisibleForTesting
@@ -338,7 +310,8 @@
         if (mHasWorkProfile) {
             setBottomPadding(mAdapters.get(AdapterHolder.WORK).mWidgetsRecyclerView, insets.bottom);
         }
-        mSearchAndRecommendationsScrollController.updateBottomInset(insets.bottom);
+        ((MarginLayoutParams) mNoWidgetsView.getLayoutParams()).bottomMargin = insets.bottom;
+
         if (insets.bottom > 0) {
             setupNavBarColor();
         } else {
@@ -357,17 +330,40 @@
     }
 
     @Override
+    protected void onContentHorizontalMarginChanged(int contentHorizontalMarginInPx) {
+        setContentViewChildHorizontalMargin(mSearchScrollController.mContainer,
+                contentHorizontalMarginInPx);
+        if (mViewPager == null) {
+            setContentViewChildHorizontalMargin(
+                    mAdapters.get(AdapterHolder.PRIMARY).mWidgetsRecyclerView,
+                    contentHorizontalMarginInPx);
+        } else {
+            setContentViewChildHorizontalMargin(mViewPager, contentHorizontalMarginInPx);
+        }
+        setContentViewChildHorizontalMargin(
+                mAdapters.get(AdapterHolder.SEARCH).mWidgetsRecyclerView,
+                contentHorizontalMarginInPx);
+    }
+
+    private static void setContentViewChildHorizontalMargin(View view, int horizontalMarginInPx) {
+        ViewGroup.MarginLayoutParams layoutParams =
+                (ViewGroup.MarginLayoutParams) view.getLayoutParams();
+        layoutParams.setMarginStart(horizontalMarginInPx);
+        layoutParams.setMarginEnd(horizontalMarginInPx);
+    }
+
+    @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         doMeasure(widthMeasureSpec, heightMeasureSpec);
 
-        if (mSearchAndRecommendationsScrollController.updateMarginAndPadding()) {
+        if (mSearchScrollController.updateHeaderHeight()) {
             doMeasure(widthMeasureSpec, heightMeasureSpec);
         }
 
         if (updateMaxSpansPerRow()) {
             doMeasure(widthMeasureSpec, heightMeasureSpec);
 
-            if (mSearchAndRecommendationsScrollController.updateMarginAndPadding()) {
+            if (mSearchScrollController.updateHeaderHeight()) {
                 doMeasure(widthMeasureSpec, heightMeasureSpec);
             }
         }
@@ -377,11 +373,13 @@
     private boolean updateMaxSpansPerRow() {
         if (getMeasuredWidth() == 0) return false;
 
-        int previousMaxSpansPerRow = mMaxSpansPerRow;
-        mMaxSpansPerRow = getMeasuredWidth()
-                / (mActivityContext.getDeviceProfile().cellWidthPx + mWidgetCellHorizontalPadding);
-
-        if (previousMaxSpansPerRow != mMaxSpansPerRow) {
+        View content = mHasWorkProfile
+                ? mViewPager
+                : mAdapters.get(AdapterHolder.PRIMARY).mWidgetsRecyclerView;
+        int maxHorizontalSpans = computeMaxHorizontalSpans(content,
+                mWidgetSheetContentHorizontalPadding);
+        if (mMaxSpansPerRow != maxHorizontalSpans) {
+            mMaxSpansPerRow = maxHorizontalSpans;
             mAdapters.get(AdapterHolder.PRIMARY).mWidgetsListAdapter.setMaxHorizontalSpansPerRow(
                     mMaxSpansPerRow);
             mAdapters.get(AdapterHolder.SEARCH).mWidgetsListAdapter.setMaxHorizontalSpansPerRow(
@@ -428,7 +426,7 @@
 
         if (mHasWorkProfile) {
             mViewPager.setVisibility(VISIBLE);
-            mTabsView.setVisibility(VISIBLE);
+            mSearchScrollController.mTabBar.setVisibility(VISIBLE);
             AdapterHolder workUserAdapterHolder = mAdapters.get(AdapterHolder.WORK);
             workUserAdapterHolder.mWidgetsListAdapter.setWidgets(allWidgets);
             onActivePageChanged(mViewPager.getCurrentPage());
@@ -438,9 +436,9 @@
         // Update recommended widgets section so that it occupies appropriate space on screen to
         // leave enough space for presence/absence of mNoWidgetsView.
         boolean isNoWidgetsViewNeeded =
-                mAdapters.get(AdapterHolder.PRIMARY).mWidgetsListAdapter.getItemCount() == 0
+                !mAdapters.get(AdapterHolder.PRIMARY).mWidgetsListAdapter.hasVisibleEntries()
                         || (mHasWorkProfile && mAdapters.get(AdapterHolder.WORK)
-                                .mWidgetsListAdapter.getItemCount() == 0);
+                        .mWidgetsListAdapter.hasVisibleEntries());
         if (mIsNoWidgetsViewNeeded != isNoWidgetsViewNeeded) {
             mIsNoWidgetsViewNeeded = isNoWidgetsViewNeeded;
             onRecommendedWidgetsBound();
@@ -464,8 +462,6 @@
             mViewPager.snapToPage(AdapterHolder.PRIMARY);
         }
         attachScrollbarToRecyclerView(mAdapters.get(AdapterHolder.PRIMARY).mWidgetsRecyclerView);
-
-        mSearchAndRecommendationsScrollController.updateMarginAndPadding();
     }
 
     @Override
@@ -478,10 +474,10 @@
     private void setViewVisibilityBasedOnSearch(boolean isInSearchMode) {
         mIsInSearchMode = isInSearchMode;
         if (isInSearchMode) {
-            mSearchAndRecommendationViewHolder.mRecommendedWidgetsTable.setVisibility(GONE);
+            mSearchScrollController.mRecommendedWidgetsTable.setVisibility(GONE);
             if (mHasWorkProfile) {
                 mViewPager.setVisibility(GONE);
-                mTabsView.setVisibility(GONE);
+                mSearchScrollController.mTabBar.setVisibility(GONE);
             } else {
                 mAdapters.get(AdapterHolder.PRIMARY).mWidgetsRecyclerView.setVisibility(GONE);
             }
@@ -509,8 +505,7 @@
         }
         List<WidgetItem> recommendedWidgets =
                 mActivityContext.getPopupDataProvider().getRecommendedWidgets();
-        WidgetsRecommendationTableLayout table =
-                mSearchAndRecommendationViewHolder.mRecommendedWidgetsTable;
+        WidgetsRecommendationTableLayout table = mSearchScrollController.mRecommendedWidgetsTable;
         if (recommendedWidgets.size() > 0) {
             float noWidgetsViewHeight = 0;
             if (mIsNoWidgetsViewNeeded) {
@@ -527,7 +522,7 @@
                     makeMeasureSpec(mActivityContext.getDeviceProfile().availableHeightPx,
                             MeasureSpec.EXACTLY));
             float maxTableHeight = (mContent.getMeasuredHeight()
-                    - mTabsHeight - mViewPagerTopPadding - getHeaderViewHeight()
+                    - mTabsHeight - getHeaderViewHeight()
                     - noWidgetsViewHeight) * RECOMMENDATION_TABLE_HEIGHT_RATIO;
 
             List<ArrayList<WidgetItem>> recommendedWidgetsInTable =
@@ -590,10 +585,10 @@
                 mNoIntercept = !getRecyclerView().shouldContainerScroll(ev, getPopupContainer());
             }
 
-            if (mSearchAndRecommendationViewHolder.mSearchBar.isSearchBarFocused()
+            if (mSearchScrollController.mSearchBar.isSearchBarFocused()
                     && !getPopupContainer().isEventOverView(
-                            mSearchAndRecommendationViewHolder.mSearchBarContainer, ev)) {
-                mSearchAndRecommendationViewHolder.mSearchBar.clearSearchBarFocus();
+                    mSearchScrollController.mSearchBarContainer, ev)) {
+                mSearchScrollController.mSearchBar.clearSearchBarFocus();
             }
         }
         return super.onControllerInterceptTouchEvent(ev);
@@ -634,10 +629,8 @@
 
     @Override
     public int getHeaderViewHeight() {
-        return measureHeightWithVerticalMargins(mSearchAndRecommendationViewHolder.mCollapseHandle)
-                + measureHeightWithVerticalMargins(mSearchAndRecommendationViewHolder.mHeaderTitle)
-                + measureHeightWithVerticalMargins(
-                        (View) mSearchAndRecommendationViewHolder.mSearchBarContainer);
+        return measureHeightWithVerticalMargins(mSearchScrollController.mHeaderTitle)
+                + measureHeightWithVerticalMargins(mSearchScrollController.mSearchBarContainer);
     }
 
     /** private the height, in pixel, + the vertical margins of a given view. */
@@ -654,14 +647,14 @@
     protected void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
         if (mIsInSearchMode) {
-            mSearchAndRecommendationViewHolder.mSearchBar.reset();
+            mSearchScrollController.mSearchBar.reset();
         }
     }
 
     @Override
     public boolean onBackPressed() {
         if (mIsInSearchMode) {
-            mSearchAndRecommendationViewHolder.mSearchBar.reset();
+            mSearchScrollController.mSearchBar.reset();
             return true;
         }
         return super.onBackPressed();
@@ -674,11 +667,10 @@
     }
 
     @Nullable private View getViewToShowEducationTip() {
-        if (mSearchAndRecommendationViewHolder.mRecommendedWidgetsTable.getVisibility() == VISIBLE
-                && mSearchAndRecommendationViewHolder.mRecommendedWidgetsTable.getChildCount() > 0
-        ) {
-            return ((ViewGroup) mSearchAndRecommendationViewHolder.mRecommendedWidgetsTable
-                    .getChildAt(0)).getChildAt(0);
+        if (mSearchScrollController.mRecommendedWidgetsTable.getVisibility() == VISIBLE
+                && mSearchScrollController.mRecommendedWidgetsTable.getChildCount() > 0) {
+            return ((ViewGroup) mSearchScrollController.mRecommendedWidgetsTable.getChildAt(0))
+                    .getChildAt(0);
         }
 
         AdapterHolder adapterHolder = mAdapters.get(mIsInSearchMode
@@ -695,7 +687,7 @@
                         .findFirst()
                         .orElse(null);
         if (viewHolderForTip != null) {
-            return ((ViewGroup) viewHolderForTip.mTableContainer.getChildAt(0)).getChildAt(0);
+            return ((ViewGroup) viewHolderForTip.tableContainer.getChildAt(0)).getChildAt(0);
         }
 
         return null;
@@ -753,8 +745,8 @@
             mWidgetsListAdapter = new WidgetsListAdapter(
                     context,
                     LayoutInflater.from(context),
-                    apps.getWidgetCache(),
                     apps.getIconCache(),
+                    this::getEmptySpaceHeight,
                     /* iconClickListener= */ WidgetsFullSheet.this,
                     /* iconLongClickListener= */ WidgetsFullSheet.this);
             mWidgetsListAdapter.setHasStableIds(true);
@@ -774,46 +766,24 @@
             mWidgetsListItemAnimator.setSupportsChangeAnimations(false);
         }
 
+        private int getEmptySpaceHeight() {
+            return mSearchScrollController.getHeaderHeight();
+        }
+
         void setup(WidgetsRecyclerView recyclerView) {
             mWidgetsRecyclerView = recyclerView;
             mWidgetsRecyclerView.setAdapter(mWidgetsListAdapter);
             mWidgetsRecyclerView.setItemAnimator(mWidgetsListItemAnimator);
             mWidgetsRecyclerView.setHeaderViewDimensionsProvider(WidgetsFullSheet.this);
             mWidgetsRecyclerView.setEdgeEffectFactory(
-                    ((TopRoundedCornerView) mContent).createEdgeEffectFactory());
+                    ((SpringRelativeLayout) mContent).createEdgeEffectFactory());
             // Recycler view binds to fast scroller when it is attached to screen. Make sure
             // search recycler view is bound to fast scroller if user is in search mode at the time
             // of attachment.
             if (mAdapterType == PRIMARY || mAdapterType == WORK) {
                 mWidgetsRecyclerView.addOnAttachStateChangeListener(mBindScrollbarInSearchMode);
             }
-            mWidgetsListAdapter.setApplyBitmapDeferred(false, mWidgetsRecyclerView);
             mWidgetsListAdapter.setMaxHorizontalSpansPerRow(mMaxSpansPerRow);
         }
     }
-
-    final class SearchAndRecommendationViewHolder {
-        final SearchAndRecommendationsView mContainer;
-        final View mCollapseHandle;
-        final View mSearchBarContainer;
-        final WidgetsSearchBar mSearchBar;
-        final TextView mHeaderTitle;
-        final WidgetsRecommendationTableLayout mRecommendedWidgetsTable;
-
-        SearchAndRecommendationViewHolder(
-                SearchAndRecommendationsView searchAndRecommendationContainer) {
-            mContainer = searchAndRecommendationContainer;
-            mCollapseHandle = mContainer.findViewById(R.id.collapse_handle);
-            mSearchBarContainer = mContainer.findViewById(R.id.search_bar_container);
-            mSearchBar = mContainer.findViewById(R.id.widgets_search_bar);
-            mHeaderTitle = mContainer.findViewById(R.id.title);
-            mRecommendedWidgetsTable = mContainer.findViewById(R.id.recommended_widget_table);
-            mRecommendedWidgetsTable.setWidgetCellOnTouchListener((view, event) -> {
-                getRecyclerView().onTouchEvent(event);
-                return false;
-            });
-            mRecommendedWidgetsTable.setWidgetCellLongClickListener(WidgetsFullSheet.this);
-            mRecommendedWidgetsTable.setWidgetCellOnClickListener(WidgetsFullSheet.this);
-        }
-    }
 }
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
index 1125b82..de0d8b8 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListAdapter.java
@@ -16,19 +16,20 @@
 package com.android.launcher3.widget.picker;
 
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WIDGETSTRAY_APP_EXPANDED;
+import static com.android.launcher3.recyclerview.ViewHolderBinder.POSITION_DEFAULT;
+import static com.android.launcher3.recyclerview.ViewHolderBinder.POSITION_FIRST;
+import static com.android.launcher3.recyclerview.ViewHolderBinder.POSITION_LAST;
 
 import android.content.Context;
 import android.graphics.Rect;
 import android.os.Process;
 import android.util.Log;
-import android.util.Size;
 import android.util.SparseArray;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnLongClickListener;
 import android.view.ViewGroup;
-import android.widget.TableRow;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -38,32 +39,27 @@
 import androidx.recyclerview.widget.RecyclerView.LayoutParams;
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 
-import com.android.launcher3.BaseActivity;
-import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.icons.IconCache;
-import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.model.data.PackageItemInfo;
 import com.android.launcher3.recyclerview.ViewHolderBinder;
 import com.android.launcher3.util.LabelComparator;
 import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.widget.CachingWidgetPreviewLoader;
-import com.android.launcher3.widget.DatabaseWidgetPreviewLoader;
-import com.android.launcher3.widget.WidgetCell;
-import com.android.launcher3.widget.WidgetPreviewLoader.WidgetPreviewLoadedCallback;
+import com.android.launcher3.widget.model.WidgetListSpaceEntry;
 import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 import com.android.launcher3.widget.model.WidgetsListContentEntry;
 import com.android.launcher3.widget.model.WidgetsListHeaderEntry;
 import com.android.launcher3.widget.model.WidgetsListSearchHeaderEntry;
-import com.android.launcher3.widget.util.WidgetSizes;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 import java.util.OptionalInt;
+import java.util.function.IntSupplier;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
@@ -84,20 +80,18 @@
     private static final boolean DEBUG = false;
 
     /** Uniquely identifies widgets list view type within the app. */
+    private static final int VIEW_TYPE_WIDGETS_SPACE = R.id.view_type_widgets_space;
     private static final int VIEW_TYPE_WIDGETS_LIST = R.id.view_type_widgets_list;
     private static final int VIEW_TYPE_WIDGETS_HEADER = R.id.view_type_widgets_header;
     private static final int VIEW_TYPE_WIDGETS_SEARCH_HEADER = R.id.view_type_widgets_search_header;
 
-    private final Context mContext;
     private final Launcher mLauncher;
-    private final CachingWidgetPreviewLoader mCachingPreviewLoader;
     private final WidgetsDiffReporter mDiffReporter;
     private final SparseArray<ViewHolderBinder> mViewHolderBinders = new SparseArray<>();
-    private final WidgetsListTableViewHolderBinder mWidgetsListTableViewHolderBinder;
     private final WidgetListBaseRowEntryComparator mRowComparator =
             new WidgetListBaseRowEntryComparator();
 
-    private List<WidgetsListBaseEntry> mAllEntries = new ArrayList<>();
+    private final List<WidgetsListBaseEntry> mAllEntries = new ArrayList<>();
     private ArrayList<WidgetsListBaseEntry> mVisibleEntries = new ArrayList<>();
     @Nullable private PackageUserKey mWidgetsContentVisiblePackageUserKey = null;
 
@@ -109,42 +103,36 @@
     @Nullable private Predicate<WidgetsListBaseEntry> mFilter = null;
     @Nullable private RecyclerView mRecyclerView;
     @Nullable private PackageUserKey mPendingClickHeader;
-    private final int mShortcutPreviewPadding;
     private final int mSpacingBetweenEntries;
     private int mMaxSpanSize = 4;
 
-    private final WidgetPreviewLoadedCallback mPreviewLoadedCallback =
-            ignored -> updateVisibleEntries();
-
     public WidgetsListAdapter(Context context, LayoutInflater layoutInflater,
-            DatabaseWidgetPreviewLoader widgetPreviewLoader, IconCache iconCache,
+            IconCache iconCache, IntSupplier emptySpaceHeightProvider,
             OnClickListener iconClickListener, OnLongClickListener iconLongClickListener) {
-        mContext = context;
         mLauncher = Launcher.getLauncher(context);
-        mCachingPreviewLoader = new CachingWidgetPreviewLoader(widgetPreviewLoader);
         mDiffReporter = new WidgetsDiffReporter(iconCache, this);
         WidgetsListDrawableFactory listDrawableFactory = new WidgetsListDrawableFactory(context);
-        mWidgetsListTableViewHolderBinder = new WidgetsListTableViewHolderBinder(
-                layoutInflater, iconClickListener, iconLongClickListener,
-                mCachingPreviewLoader, listDrawableFactory, /* listAdapter= */ this);
-        mViewHolderBinders.put(VIEW_TYPE_WIDGETS_LIST, mWidgetsListTableViewHolderBinder);
+
+        mViewHolderBinders.put(
+                VIEW_TYPE_WIDGETS_LIST,
+                new WidgetsListTableViewHolderBinder(
+                        layoutInflater, iconClickListener, iconLongClickListener,
+                        listDrawableFactory));
         mViewHolderBinders.put(
                 VIEW_TYPE_WIDGETS_HEADER,
                 new WidgetsListHeaderViewHolderBinder(
                         layoutInflater,
                         /* onHeaderClickListener= */ this,
-                        listDrawableFactory,
-                        /* listAdapter= */ this));
+                        listDrawableFactory));
         mViewHolderBinders.put(
                 VIEW_TYPE_WIDGETS_SEARCH_HEADER,
                 new WidgetsListSearchHeaderViewHolderBinder(
                         layoutInflater,
                         /* onHeaderClickListener= */ this,
-                        listDrawableFactory,
-                        /* listAdapter= */ this));
-        mShortcutPreviewPadding =
-                2 * context.getResources()
-                        .getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
+                        listDrawableFactory));
+        mViewHolderBinders.put(
+                VIEW_TYPE_WIDGETS_SPACE,
+                new WidgetsSpaceViewHolderBinder(emptySpaceHeightProvider));
         mSpacingBetweenEntries =
                 context.getResources().getDimensionPixelSize(R.dimen.widget_list_entry_spacing);
     }
@@ -178,33 +166,19 @@
         mFilter = filter;
     }
 
-    /**
-     * Defers applying bitmap on all the {@link WidgetCell} in the {@param rv}.
-     *
-     * @see WidgetCell#setApplyBitmapDeferred(boolean)
-     */
-    public void setApplyBitmapDeferred(boolean isDeferred, RecyclerView rv) {
-        mWidgetsListTableViewHolderBinder.setApplyBitmapDeferred(isDeferred);
-
-        for (int i = rv.getChildCount() - 1; i >= 0; i--) {
-            ViewHolder viewHolder = rv.getChildViewHolder(rv.getChildAt(i));
-            if (viewHolder.getItemViewType() == VIEW_TYPE_WIDGETS_LIST) {
-                WidgetsRowViewHolder holder = (WidgetsRowViewHolder) viewHolder;
-                for (int j = holder.mTableContainer.getChildCount() - 1; j >= 0; j--) {
-                    TableRow row =  (TableRow) holder.mTableContainer.getChildAt(j);
-                    for (int k = row.getChildCount() - 1; k >= 0; k--) {
-                        ((WidgetCell) row.getChildAt(k)).setApplyBitmapDeferred(isDeferred);
-                    }
-                }
-            }
-        }
-    }
-
     @Override
     public int getItemCount() {
         return mVisibleEntries.size();
     }
 
+    /**
+     * Returns true if the adapter has entries which will be visible to the user
+     */
+    public boolean hasVisibleEntries() {
+        // Account for the 1st space entry
+        return getItemCount() > 1;
+    }
+
     /** Returns all items that will be drawn in a recycler view. */
     public List<WidgetsListBaseEntry> getItems() {
         return mVisibleEntries;
@@ -217,9 +191,9 @@
 
     /** Updates the widget list based on {@code tempEntries}. */
     public void setWidgets(List<WidgetsListBaseEntry> tempEntries) {
-        mCachingPreviewLoader.clearAll();
-        mAllEntries = tempEntries.stream().sorted(mRowComparator)
-                .collect(Collectors.toList());
+        mAllEntries.clear();
+        mAllEntries.add(new WidgetListSpaceEntry());
+        tempEntries.stream().sorted(mRowComparator).forEach(mAllEntries::add);
         if (shouldClearVisibleEntries()) {
             mVisibleEntries.clear();
         }
@@ -230,15 +204,10 @@
     public void setWidgetsOnSearch(List<WidgetsListBaseEntry> searchResults) {
         // Forget the expanded package every time widget list is refreshed in search mode.
         mWidgetsContentVisiblePackageUserKey = null;
-        cancelLoadingPreviews();
         setWidgets(searchResults);
     }
 
     private void updateVisibleEntries() {
-        // If not all previews are ready, then defer this update and try again after the preview
-        // loads.
-        if (!ensureAllPreviewsReady()) return;
-
         // Get the current top of the header with the matching key before adjusting the visible
         // entries.
         OptionalInt previousPositionForPackageUserKey =
@@ -247,8 +216,9 @@
                 getOffsetForPosition(previousPositionForPackageUserKey);
 
         List<WidgetsListBaseEntry> newVisibleEntries = mAllEntries.stream()
-                .filter(entry -> (mFilter == null || mFilter.test(entry))
+                .filter(entry -> ((mFilter == null || mFilter.test(entry))
                         && mHeaderAndSelectedContentFilter.test(entry))
+                        || entry instanceof WidgetListSpaceEntry)
                 .map(entry -> {
                     if (entry instanceof WidgetsListBaseEntry.Header<?>
                             && matchesKey(entry, mWidgetsContentVisiblePackageUserKey)) {
@@ -275,54 +245,6 @@
         }
     }
 
-    /**
-     * Checks that all preview images are loaded and starts loading for those that aren't ready.
-     *
-     * @return true if all previews are ready and the data can be updated, false otherwise.
-     */
-    private boolean ensureAllPreviewsReady() {
-        boolean allReady = true;
-        BaseActivity activity = BaseActivity.fromContext(mContext);
-        for (WidgetsListBaseEntry entry : mAllEntries) {
-            if (!(entry instanceof WidgetsListContentEntry)) continue;
-
-            WidgetsListContentEntry contentEntry = (WidgetsListContentEntry) entry;
-            if (!matchesKey(entry, mWidgetsContentVisiblePackageUserKey)) {
-                // If the entry isn't visible, clear any loaded previews.
-                mCachingPreviewLoader.clearPreviews(contentEntry.mWidgets);
-                continue;
-            }
-
-            for (int i = 0; i < entry.mWidgets.size(); i++) {
-                WidgetItem widgetItem = entry.mWidgets.get(i);
-                DeviceProfile deviceProfile = activity.getDeviceProfile();
-                Size widgetSize = WidgetSizes.getWidgetItemSizePx(mContext, deviceProfile,
-                        widgetItem);
-                if (widgetItem.isShortcut()) {
-                    widgetSize =
-                            new Size(
-                                    widgetSize.getWidth() + mShortcutPreviewPadding,
-                                    widgetSize.getHeight() + mShortcutPreviewPadding);
-                }
-
-                if (widgetItem.hasPreviewLayout()
-                        || mCachingPreviewLoader.isPreviewLoaded(widgetItem, widgetSize)) {
-                    // The widget is ready if it can be rendered with a preview layout or if its
-                    // preview bitmap is in the cache.
-                    continue;
-                }
-
-                // If we've reached this point, we should load the preview for the widget.
-                allReady = false;
-                mCachingPreviewLoader.loadPreview(
-                        activity,
-                        widgetItem,
-                        widgetSize,
-                        mPreviewLoadedCallback);
-            }
-        }
-        return allReady;
-    }
 
     /** Returns whether {@code entry} matches {@code key}. */
     private static boolean isHeaderForPackageUserKey(
@@ -343,16 +265,26 @@
     public void resetExpandedHeader() {
         if (mWidgetsContentVisiblePackageUserKey != null) {
             mWidgetsContentVisiblePackageUserKey = null;
-            cancelLoadingPreviews();
             updateVisibleEntries();
         }
     }
 
     @Override
-    public void onBindViewHolder(ViewHolder holder, int pos) {
+    public void onBindViewHolder(ViewHolder holder, int position) {
+        onBindViewHolder(holder, position, Collections.EMPTY_LIST);
+    }
+
+    @Override
+    public void onBindViewHolder(ViewHolder holder, int pos, List<Object> payloads) {
         ViewHolderBinder viewHolderBinder = mViewHolderBinders.get(getItemViewType(pos));
         WidgetsListBaseEntry entry = mVisibleEntries.get(pos);
-        viewHolderBinder.bindViewHolder(holder, mVisibleEntries.get(pos), pos);
+
+        // The first entry has an empty space, count from second entries.
+        int listPos = (pos > 1) ? POSITION_DEFAULT : POSITION_FIRST;
+        if (pos == (getItemCount() - 1)) {
+            listPos |= POSITION_LAST;
+        }
+        viewHolderBinder.bindViewHolder(holder, mVisibleEntries.get(pos), listPos, payloads);
         holder.itemView.setTag(R.id.tag_widget_entry, entry);
     }
 
@@ -395,6 +327,8 @@
             return VIEW_TYPE_WIDGETS_HEADER;
         } else if (entry instanceof WidgetsListSearchHeaderEntry) {
             return VIEW_TYPE_WIDGETS_SEARCH_HEADER;
+        } else if (entry instanceof WidgetListSpaceEntry) {
+            return VIEW_TYPE_WIDGETS_SPACE;
         }
         throw new UnsupportedOperationException("ViewHolderBinder not found for " + entry);
     }
@@ -404,8 +338,6 @@
         // Ignore invalid clicks, such as collapsing a package that isn't currently expanded.
         if (!showWidgets && !packageUserKey.equals(mWidgetsContentVisiblePackageUserKey)) return;
 
-        cancelLoadingPreviews();
-
         if (showWidgets) {
             mWidgetsContentVisiblePackageUserKey = packageUserKey;
             mLauncher.getStatsLogManager().logger().log(LAUNCHER_WIDGETSTRAY_APP_EXPANDED);
@@ -420,16 +352,6 @@
         updateVisibleEntries();
     }
 
-    private void cancelLoadingPreviews() {
-        mCachingPreviewLoader.clearAll();
-    }
-
-    /** Returns the position of the currently expanded header, or empty if it's not present. */
-    public OptionalInt getSelectedHeaderPosition() {
-        if (mWidgetsContentVisiblePackageUserKey == null) return OptionalInt.empty();
-        return getPositionForPackageUserKey(mWidgetsContentVisiblePackageUserKey);
-    }
-
     /**
      * Returns the position of {@code key} in {@link #mVisibleEntries}, or  empty if it's not
      * present.
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java b/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java
index 2f8f1ba..fadb637 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java
@@ -23,6 +23,8 @@
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.widget.model.WidgetsListHeaderEntry;
 
+import java.util.List;
+
 /**
  * Binds data from {@link WidgetsListHeaderEntry} to UI elements in {@link WidgetsListHeaderHolder}.
  */
@@ -31,16 +33,13 @@
     private final LayoutInflater mLayoutInflater;
     private final OnHeaderClickListener mOnHeaderClickListener;
     private final WidgetsListDrawableFactory mListDrawableFactory;
-    private final WidgetsListAdapter mWidgetsListAdapter;
 
     public WidgetsListHeaderViewHolderBinder(LayoutInflater layoutInflater,
             OnHeaderClickListener onHeaderClickListener,
-            WidgetsListDrawableFactory listDrawableFactory,
-            WidgetsListAdapter listAdapter) {
+            WidgetsListDrawableFactory listDrawableFactory) {
         mLayoutInflater = layoutInflater;
         mOnHeaderClickListener = onHeaderClickListener;
         mListDrawableFactory = listDrawableFactory;
-        mWidgetsListAdapter = listAdapter;
     }
 
     @Override
@@ -53,14 +52,14 @@
 
     @Override
     public void bindViewHolder(WidgetsListHeaderHolder viewHolder, WidgetsListHeaderEntry data,
-            int position) {
+            @ListPosition int position, List<Object> payloads) {
         WidgetsListHeader widgetsListHeader = viewHolder.mWidgetsListHeader;
         widgetsListHeader.applyFromItemInfoWithIcon(data);
         widgetsListHeader.setExpanded(data.isWidgetListShown());
         widgetsListHeader.setListDrawableState(
                 WidgetsListDrawableState.obtain(
-                        /* isFirst= */ position == 0,
-                        /* isLast= */ position == mWidgetsListAdapter.getItemCount() - 1,
+                        (position & POSITION_FIRST) != 0,
+                        (position & POSITION_LAST) != 0,
                         /* isExpanded= */ data.isWidgetListShown()));
         widgetsListHeader.setOnExpandChangeListener(isExpanded ->
                 mOnHeaderClickListener.onHeaderClicked(
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListLayoutManager.java b/src/com/android/launcher3/widget/picker/WidgetsListLayoutManager.java
deleted file mode 100644
index 2b7f544..0000000
--- a/src/com/android/launcher3/widget/picker/WidgetsListLayoutManager.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.widget.picker;
-
-import android.content.Context;
-
-import androidx.annotation.Nullable;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.android.launcher3.widget.picker.SearchAndRecommendationsScrollController.OnContentChangeListener;
-
-/**
- * A layout manager for the {@link WidgetsRecyclerView}.
- *
- * {@link #setOnContentChangeListener(OnContentChangeListener)} can be used to register a callback
- * for when the content of the layout manager has changed, following measurement and animation.
- */
-public final class WidgetsListLayoutManager extends LinearLayoutManager {
-    @Nullable
-    private OnContentChangeListener mOnContentChangeListener;
-
-    public WidgetsListLayoutManager(Context context) {
-        super(context);
-    }
-
-    @Override
-    public void onLayoutCompleted(RecyclerView.State state) {
-        super.onLayoutCompleted(state);
-        if (mOnContentChangeListener != null) {
-            mOnContentChangeListener.onContentChanged();
-        }
-    }
-
-    public void setOnContentChangeListener(@Nullable OnContentChangeListener listener) {
-        mOnContentChangeListener = listener;
-    }
-}
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java b/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java
index 31dd9ee..bff43c1 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java
@@ -24,6 +24,8 @@
 import com.android.launcher3.widget.model.WidgetsListHeaderEntry;
 import com.android.launcher3.widget.model.WidgetsListSearchHeaderEntry;
 
+import java.util.List;
+
 /**
  * Binds data from {@link WidgetsListHeaderEntry} to UI elements in {@link WidgetsListHeaderHolder}.
  */
@@ -32,16 +34,13 @@
     private final LayoutInflater mLayoutInflater;
     private final OnHeaderClickListener mOnHeaderClickListener;
     private final WidgetsListDrawableFactory mListDrawableFactory;
-    private final WidgetsListAdapter mWidgetsListAdapter;
 
     public WidgetsListSearchHeaderViewHolderBinder(LayoutInflater layoutInflater,
             OnHeaderClickListener onHeaderClickListener,
-            WidgetsListDrawableFactory listDrawableFactory,
-            WidgetsListAdapter listAdapter) {
+            WidgetsListDrawableFactory listDrawableFactory) {
         mLayoutInflater = layoutInflater;
         mOnHeaderClickListener = onHeaderClickListener;
         mListDrawableFactory = listDrawableFactory;
-        mWidgetsListAdapter = listAdapter;
     }
 
     @Override
@@ -54,14 +53,14 @@
 
     @Override
     public void bindViewHolder(WidgetsListSearchHeaderHolder viewHolder,
-            WidgetsListSearchHeaderEntry data, int position) {
+            WidgetsListSearchHeaderEntry data, @ListPosition int position, List<Object> payloads) {
         WidgetsListHeader widgetsListHeader = viewHolder.mWidgetsListHeader;
         widgetsListHeader.applyFromItemInfoWithIcon(data);
         widgetsListHeader.setExpanded(data.isWidgetListShown());
         widgetsListHeader.setListDrawableState(
                 WidgetsListDrawableState.obtain(
-                        /* isFirst= */ position == 0,
-                        /* isLast= */ position == mWidgetsListAdapter.getItemCount() - 1,
+                        (position & POSITION_FIRST) != 0,
+                        (position & POSITION_LAST) != 0,
                         /* isExpanded= */ data.isWidgetListShown()));
         widgetsListHeader.setOnExpandChangeListener(isExpanded ->
                 mOnHeaderClickListener.onHeaderClicked(isExpanded,
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinder.java b/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinder.java
index 9c06558..feeb0fe 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinder.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListTableViewHolderBinder.java
@@ -20,7 +20,7 @@
 
 import android.graphics.Bitmap;
 import android.util.Log;
-import android.util.Size;
+import android.util.Pair;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -33,7 +33,6 @@
 import com.android.launcher3.R;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.recyclerview.ViewHolderBinder;
-import com.android.launcher3.widget.CachingWidgetPreviewLoader;
 import com.android.launcher3.widget.WidgetCell;
 import com.android.launcher3.widget.model.WidgetsListContentEntry;
 import com.android.launcher3.widget.util.WidgetsTableUtils;
@@ -53,32 +52,16 @@
     private final OnClickListener mIconClickListener;
     private final OnLongClickListener mIconLongClickListener;
     private final WidgetsListDrawableFactory mListDrawableFactory;
-    private final CachingWidgetPreviewLoader mWidgetPreviewLoader;
-    private final WidgetsListAdapter mWidgetsListAdapter;
-    private boolean mApplyBitmapDeferred = false;
 
     public WidgetsListTableViewHolderBinder(
             LayoutInflater layoutInflater,
             OnClickListener iconClickListener,
             OnLongClickListener iconLongClickListener,
-            CachingWidgetPreviewLoader widgetPreviewLoader,
-            WidgetsListDrawableFactory listDrawableFactory,
-            WidgetsListAdapter listAdapter) {
+            WidgetsListDrawableFactory listDrawableFactory) {
         mLayoutInflater = layoutInflater;
         mIconClickListener = iconClickListener;
         mIconLongClickListener = iconLongClickListener;
-        mWidgetPreviewLoader = widgetPreviewLoader;
         mListDrawableFactory = listDrawableFactory;
-        mWidgetsListAdapter = listAdapter;
-    }
-
-    /**
-     * Defers applying bitmap on all the {@link WidgetCell} at
-     * {@link #bindViewHolder(WidgetsRowViewHolder, WidgetsListContentEntry, int)} if
-     * {@code applyBitmapDeferred} is {@code true}.
-     */
-    public void setApplyBitmapDeferred(boolean applyBitmapDeferred) {
-        mApplyBitmapDeferred = applyBitmapDeferred;
     }
 
     @Override
@@ -90,27 +73,30 @@
         WidgetsRowViewHolder viewHolder =
                 new WidgetsRowViewHolder(mLayoutInflater.inflate(
                         R.layout.widgets_table_container, parent, false));
-        viewHolder.mTableContainer.setBackgroundDrawable(
+        viewHolder.tableContainer.setBackgroundDrawable(
                 mListDrawableFactory.createContentBackgroundDrawable());
         return viewHolder;
     }
 
     @Override
     public void bindViewHolder(WidgetsRowViewHolder holder, WidgetsListContentEntry entry,
-            int position) {
-        WidgetsListTableView table = holder.mTableContainer;
+            @ListPosition int position, List<Object> payloads) {
+        for (Object payload : payloads) {
+            Pair<WidgetItem, Bitmap> pair = (Pair) payload;
+            holder.previewCache.put(pair.first, pair.second);
+        }
+
+        WidgetsListTableView table = holder.tableContainer;
         if (DEBUG) {
             Log.d(TAG, String.format("onBindViewHolder [widget#=%d, table.getChildCount=%d]",
                     entry.mWidgets.size(), table.getChildCount()));
         }
-
-        table.setListDrawableState(
-                position == mWidgetsListAdapter.getItemCount() - 1 ? LAST : MIDDLE);
-
+        table.setListDrawableState(((position & POSITION_LAST) != 0) ? LAST : MIDDLE);
         List<ArrayList<WidgetItem>> widgetItemsTable =
                 WidgetsTableUtils.groupWidgetItemsIntoTable(
                         entry.mWidgets, entry.getMaxSpanSizeInCells());
         recycleTableBeforeBinding(table, widgetItemsTable);
+
         // Bind the widget items.
         for (int i = 0; i < widgetItemsTable.size(); i++) {
             List<WidgetItem> widgetItemsPerRow = widgetItemsTable.get(i);
@@ -120,16 +106,14 @@
                 WidgetCell widget = (WidgetCell) row.getChildAt(j);
                 widget.clear();
                 WidgetItem widgetItem = widgetItemsPerRow.get(j);
-                Size previewSize = widget.setPreviewSize(widgetItem);
-                widget.applyFromCellItem(widgetItem, mWidgetPreviewLoader);
-                widget.setApplyBitmapDeferred(mApplyBitmapDeferred);
-                Bitmap preview = mWidgetPreviewLoader.getPreview(widgetItem, previewSize);
-                if (preview == null) {
-                    widget.ensurePreview();
-                } else {
-                    widget.applyPreview(preview);
-                }
                 widget.setVisibility(View.VISIBLE);
+
+                // When preview loads, notify adapter to rebind the item and possibly animate
+                widget.applyFromCellItem(widgetItem, 1f,
+                        bitmap -> holder.getBindingAdapter().notifyItemChanged(
+                                holder.getBindingAdapterPosition(),
+                                Pair.create(widgetItem, bitmap)),
+                        holder.previewCache.get(widgetItem));
             }
         }
     }
@@ -170,6 +154,7 @@
                     View preview = widget.findViewById(R.id.widget_preview_container);
                     preview.setOnClickListener(mIconClickListener);
                     preview.setOnLongClickListener(mIconLongClickListener);
+                    widget.setAnimatePreview(false);
                     tableRow.addView(widget);
                 }
             }
@@ -178,9 +163,10 @@
 
     @Override
     public void unbindViewHolder(WidgetsRowViewHolder holder) {
-        int numOfRows = holder.mTableContainer.getChildCount();
+        int numOfRows = holder.tableContainer.getChildCount();
+        holder.previewCache.clear();
         for (int i = 0; i < numOfRows; i++) {
-            TableRow tableRow = (TableRow) holder.mTableContainer.getChildAt(i);
+            TableRow tableRow = (TableRow) holder.tableContainer.getChildAt(i);
             int numOfCols = tableRow.getChildCount();
             for (int j = 0; j < numOfCols; j++) {
                 WidgetCell widget = (WidgetCell) tableRow.getChildAt(j);
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java b/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java
index 0b8ca34..c986007 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecommendationTableLayout.java
@@ -32,7 +32,6 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
-import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.R;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.widget.WidgetCell;
@@ -53,7 +52,6 @@
     private float mRecommendationTableMaxHeight = Float.MAX_VALUE;
     @Nullable private OnLongClickListener mWidgetCellOnLongClickListener;
     @Nullable private OnClickListener mWidgetCellOnClickListener;
-    @Nullable private OnTouchListener mWidgetCellOnTouchListener;
 
     public WidgetsRecommendationTableLayout(Context context) {
         this(context, /* attrs= */ null);
@@ -79,11 +77,6 @@
         mWidgetCellOnClickListener = widgetCellOnClickListener;
     }
 
-    /** Sets a {@link android.view.View.OnTouchListener} for all widget cells in this table. */
-    public void setWidgetCellOnTouchListener(OnTouchListener widgetCellOnTouchListener) {
-        mWidgetCellOnTouchListener = widgetCellOnTouchListener;
-    }
-
     /**
      * Sets a list of recommended widgets that would like to be displayed in this table within the
      * desired {@code recommendationTableMaxHeight}.
@@ -115,10 +108,7 @@
 
             for (WidgetItem widgetItem : widgetItems) {
                 WidgetCell widgetCell = addItemCell(tableRow);
-                widgetCell.setPreviewSize(widgetItem, data.mPreviewScale);
-                widgetCell.applyFromCellItem(widgetItem,
-                        LauncherAppState.getInstance(getContext()).getWidgetCache());
-                widgetCell.ensurePreview();
+                widgetCell.applyFromCellItem(widgetItem, data.mPreviewScale);
             }
             addView(tableRow);
         }
@@ -129,7 +119,6 @@
         WidgetCell widget = (WidgetCell) LayoutInflater.from(
                 getContext()).inflate(R.layout.widget_cell, parent, false);
 
-        widget.setOnTouchListener(mWidgetCellOnTouchListener);
         View previewContainer = widget.findViewById(R.id.widget_preview_container);
         previewContainer.setOnClickListener(mWidgetCellOnClickListener);
         previewContainer.setOnLongClickListener(mWidgetCellOnLongClickListener);
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
index 7671841..f780f03 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
@@ -23,7 +23,6 @@
 import android.view.View;
 import android.widget.TableLayout;
 
-import androidx.annotation.Nullable;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.RecyclerView.OnItemTouchListener;
@@ -32,11 +31,12 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.views.ActivityContext;
+import com.android.launcher3.widget.model.WidgetListSpaceEntry;
 import com.android.launcher3.widget.model.WidgetsListBaseEntry;
 import com.android.launcher3.widget.model.WidgetsListContentEntry;
 import com.android.launcher3.widget.model.WidgetsListHeaderEntry;
 import com.android.launcher3.widget.model.WidgetsListSearchHeaderEntry;
-import com.android.launcher3.widget.picker.SearchAndRecommendationsScrollController.OnContentChangeListener;
+import com.android.launcher3.widget.picker.WidgetsSpaceViewHolderBinder.EmptySpaceView;
 
 /**
  * The widgets recycler view.
@@ -50,10 +50,13 @@
     private final Point mFastScrollerOffset = new Point();
     private boolean mTouchDownOnScroller;
     private HeaderViewDimensionsProvider mHeaderViewDimensionsProvider;
+
+    // Cached sizes
     private int mLastVisibleWidgetContentTableHeight = 0;
     private int mWidgetHeaderHeight = 0;
+    private int mWidgetEmptySpaceHeight = 0;
+
     private final int mSpacingBetweenEntries;
-    @Nullable private OnContentChangeListener mOnContentChangeListener;
 
     public WidgetsRecyclerView(Context context) {
         this(context, null);
@@ -82,9 +85,7 @@
         super.onFinishInflate();
         // create a layout manager with Launcher's context so that scroll position
         // can be preserved during screen rotation.
-        WidgetsListLayoutManager layoutManager = new WidgetsListLayoutManager(getContext());
-        layoutManager.setOnContentChangeListener(mOnContentChangeListener);
-        setLayoutManager(layoutManager);
+        setLayoutManager(new LinearLayoutManager(getContext()));
     }
 
     @Override
@@ -169,10 +170,12 @@
                 // This assumes there is ever only one content shown in this recycler view.
                 mLastVisibleWidgetContentTableHeight = view.getMeasuredHeight();
             } else if (view instanceof WidgetsListHeader
-                    && mLastVisibleWidgetContentTableHeight == 0
+                    && mWidgetHeaderHeight == 0
                     && view.getMeasuredHeight() > 0) {
                 // This assumes all header views are of the same height.
                 mWidgetHeaderHeight = view.getMeasuredHeight();
+            } else if (view instanceof EmptySpaceView && view.getMeasuredHeight() > 0) {
+                mWidgetEmptySpaceHeight = view.getMeasuredHeight();
             }
         }
 
@@ -251,14 +254,6 @@
         scrollToPosition(0);
     }
 
-    public void setOnContentChangeListener(@Nullable OnContentChangeListener listener) {
-        mOnContentChangeListener = listener;
-        WidgetsListLayoutManager layoutManager = (WidgetsListLayoutManager) getLayoutManager();
-        if (layoutManager != null) {
-            layoutManager.setOnContentChangeListener(listener);
-        }
-    }
-
     /**
      * Returns the sum of the height, in pixels, of this list adapter's items from index 0 until
      * {@code untilIndex}.
@@ -283,6 +278,8 @@
                 }
             } else if (entry instanceof WidgetsListContentEntry) {
                 totalItemsHeight += mLastVisibleWidgetContentTableHeight;
+            } else if (entry instanceof WidgetListSpaceEntry) {
+                totalItemsHeight += mWidgetEmptySpaceHeight;
             } else {
                 throw new UnsupportedOperationException("Can't estimate height for " + entry);
             }
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRowViewHolder.java b/src/com/android/launcher3/widget/picker/WidgetsRowViewHolder.java
index 618e2cb..fe2d84b 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRowViewHolder.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRowViewHolder.java
@@ -15,20 +15,26 @@
  */
 package com.android.launcher3.widget.picker;
 
+import android.graphics.Bitmap;
 import android.view.View;
 
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 
 import com.android.launcher3.R;
+import com.android.launcher3.model.WidgetItem;
+
+import java.util.HashMap;
+import java.util.Map;
 
 /** A {@link ViewHolder} for showing widgets of an app in the full widget picker. */
 public final class WidgetsRowViewHolder extends ViewHolder {
 
-    public final WidgetsListTableView mTableContainer;
+    public final WidgetsListTableView tableContainer;
+    public final Map<WidgetItem, Bitmap> previewCache = new HashMap<>();
 
     public WidgetsRowViewHolder(View v) {
         super(v);
 
-        mTableContainer = v.findViewById(R.id.widgets_table);
+        tableContainer = v.findViewById(R.id.widgets_table);
     }
 }
diff --git a/src/com/android/launcher3/widget/picker/WidgetsSpaceViewHolderBinder.java b/src/com/android/launcher3/widget/picker/WidgetsSpaceViewHolderBinder.java
new file mode 100644
index 0000000..1aa5753
--- /dev/null
+++ b/src/com/android/launcher3/widget/picker/WidgetsSpaceViewHolderBinder.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.widget.picker;
+
+import static android.view.View.MeasureSpec.EXACTLY;
+import static android.view.View.MeasureSpec.makeMeasureSpec;
+
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.recyclerview.widget.RecyclerView.ViewHolder;
+
+import com.android.launcher3.recyclerview.ViewHolderBinder;
+import com.android.launcher3.widget.model.WidgetListSpaceEntry;
+
+import java.util.List;
+import java.util.function.IntSupplier;
+
+/**
+ * {@link ViewHolderBinder} for binding the top empty space
+ */
+public class WidgetsSpaceViewHolderBinder
+        implements ViewHolderBinder<WidgetListSpaceEntry, ViewHolder> {
+
+    private final IntSupplier mEmptySpaceHeightProvider;
+
+    public WidgetsSpaceViewHolderBinder(IntSupplier emptySpaceHeightProvider) {
+        mEmptySpaceHeightProvider = emptySpaceHeightProvider;
+    }
+
+    @Override
+    public ViewHolder newViewHolder(ViewGroup parent) {
+        return new ViewHolder(new EmptySpaceView(parent.getContext())) { };
+    }
+
+    @Override
+    public void bindViewHolder(ViewHolder holder, WidgetListSpaceEntry data,
+            @ListPosition int position, List<Object> payloads) {
+        ((EmptySpaceView) holder.itemView).setFixedHeight(mEmptySpaceHeightProvider.getAsInt());
+    }
+
+    /**
+     * Empty view which allows listening for 'Y' changes
+     */
+    public static class EmptySpaceView extends View {
+
+        private Runnable mOnYChangeCallback;
+        private int mHeight = 0;
+
+        private EmptySpaceView(Context context) {
+            super(context);
+            animate().setUpdateListener(v -> notifyYChanged());
+        }
+
+        /**
+         * Sets the height for the empty view
+         * @return true if the height changed, false otherwise
+         */
+        public boolean setFixedHeight(int height) {
+            if (mHeight != height) {
+                mHeight = height;
+                requestLayout();
+                return true;
+            }
+            return false;
+        }
+
+        @Override
+        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+            super.onMeasure(widthMeasureSpec, makeMeasureSpec(mHeight, EXACTLY));
+        }
+
+        public void setOnYChangeCallback(Runnable callback) {
+            mOnYChangeCallback = callback;
+        }
+
+        @Override
+        protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+            super.onLayout(changed, left, top, right, bottom);
+            notifyYChanged();
+        }
+
+        @Override
+        public void offsetTopAndBottom(int offset) {
+            super.offsetTopAndBottom(offset);
+            notifyYChanged();
+        }
+
+        @Override
+        public void setTranslationY(float translationY) {
+            super.setTranslationY(translationY);
+            notifyYChanged();
+        }
+
+        private void notifyYChanged() {
+            if (mOnYChangeCallback != null) {
+                mOnYChangeCallback.run();
+            }
+        }
+    }
+}
diff --git a/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java b/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
index 631067b..12e9e1e 100644
--- a/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
+++ b/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
@@ -150,7 +150,6 @@
             }
         }
 
-        app.getWidgetCache().removeObsoletePreviews(widgetsAndShortcuts, packageUser);
         return updatedItems;
     }
 
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java b/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java
index 4407fe1..cc90e6c 100644
--- a/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java
+++ b/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java
@@ -17,6 +17,7 @@
 package com.android.launcher3.uioverrides;
 
 import android.app.Person;
+import android.content.Context;
 import android.content.pm.ShortcutInfo;
 import android.view.Display;
 
@@ -36,4 +37,11 @@
     public static boolean isInternalDisplay(Display display) {
         return display.getDisplayId() == Display.DEFAULT_DISPLAY;
     }
+
+    /**
+     * Returns the minimum space that should be left empty at the end of hotseat
+     */
+    public static int getHotseatEndOffset(Context context) {
+        return 0;
+    }
 }
diff --git a/tests/Android.bp b/tests/Android.bp
index da55c28..37231f9 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -20,7 +20,77 @@
     default_applicable_licenses: ["packages_apps_Launcher3_license"],
 }
 
+// Source code used for test
 filegroup {
-    name: "launcher3-test-src-common",
-    srcs: ["src_common/**/*.java"],
+    name: "launcher-tests-src",
+    srcs: ["src/**/*.java"],
+}
+
+// Source code used for oop test helpers
+filegroup {
+    name: "launcher-oop-tests-src",
+    srcs: [
+      "src/com/android/launcher3/ui/AbstractLauncherUiTest.java",
+      "src/com/android/launcher3/ui/ActivityLeakTracker.java",
+      "src/com/android/launcher3/ui/PortraitLandscapeRunner.java",
+      "src/com/android/launcher3/util/Wait.java",
+      "src/com/android/launcher3/util/WidgetUtils.java",
+      "src/com/android/launcher3/util/rule/FailureWatcher.java",
+      "src/com/android/launcher3/util/rule/LauncherActivityRule.java",
+      "src/com/android/launcher3/util/rule/ScreenRecordRule.java",
+      "src/com/android/launcher3/util/rule/ShellCommandRule.java",
+      "src/com/android/launcher3/util/rule/SimpleActivityRule.java",
+      "src/com/android/launcher3/util/rule/TestStabilityRule.java",
+      "src/com/android/launcher3/ui/TaplTestsLauncher3.java",
+      "src/com/android/launcher3/testcomponent/BaseTestingActivity.java",
+      "src/com/android/launcher3/testcomponent/CustomShortcutConfigActivity.java",
+      "src/com/android/launcher3/testcomponent/TestCommandReceiver.java",
+      "src/com/android/launcher3/testcomponent/TestLauncherActivity.java",
+    ],
+}
+
+// Library with all the dependencies for building quickstep
+android_library {
+    name: "Launcher3TestLib",
+    srcs: [ ],
+    resource_dirs: ["res"],
+    static_libs: [
+        "launcher-aosp-tapl",
+        "androidx.test.runner",
+        "androidx.test.rules",
+        "androidx.test.ext.junit",
+        "androidx.test.espresso.core",
+        "androidx.test.espresso.contrib",
+        "androidx.test.espresso.intents",
+        "androidx.test.uiautomator_uiautomator",
+        "mockito-target-inline-minus-junit4",
+        "launcher_log_protos_lite",
+        "truth-prebuilt"
+    ],
+    manifest: "AndroidManifest-common.xml",
+    platform_apis: true,
+}
+
+android_test {
+    name: "Launcher3Tests",
+    srcs: [
+        ":launcher-tests-src",
+    ],
+    static_libs: ["Launcher3TestLib"],
+    libs: [
+        "android.test.base",
+        "android.test.runner",
+        "android.test.mock",
+    ],
+    jni_libs: [
+        "libdexmakerjvmtiagent",
+        "libstaticjvmtiagent",
+    ],
+    use_embedded_native_libs: false,
+    compile_multilib: "both",
+    instrumentation_for: "Launcher3",
+    manifest: "AndroidManifest.xml",
+    platform_apis: true,
+    test_config: "Launcher3Tests.xml",
+    data: [":Launcher3"]
 }
diff --git a/tests/Android.mk b/tests/Android.mk
deleted file mode 100644
index 6adc685..0000000
--- a/tests/Android.mk
+++ /dev/null
@@ -1,54 +0,0 @@
-# Copyright (C) 2015 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-#
-# Build rule for Launcher3Tests
-#
-include $(CLEAR_VARS)
-
-LOCAL_MODULE_TAGS := tests
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    androidx.test.runner \
-    androidx.test.rules \
-    androidx.test.uiautomator_uiautomator \
-    mockito-target-minus-junit4 \
-    launcher_log_protos_lite
-
-LOCAL_PRIVATE_PLATFORM_APIS := true
-LOCAL_STATIC_JAVA_LIBRARIES += launcher-aosp-tapl
-
-LOCAL_SRC_FILES := \
-	$(call all-java-files-under, src) \
-	$(call all-java-files-under, src_common)
-
-
-LOCAL_FULL_LIBS_MANIFEST_FILES := $(LOCAL_PATH)/AndroidManifest-common.xml
-
-LOCAL_PACKAGE_NAME := Launcher3Tests
-
-LOCAL_INSTRUMENTATION_FOR := Launcher3
-
-LOCAL_TEST_CONFIG := Launcher3Tests.xml
-
-LOCAL_COMPATIBILITY_SUPPORT_FILES := $(call intermediates-dir-for,APPS,Launcher3)/package.apk:Launcher3.apk
-
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../NOTICE
-include $(BUILD_PACKAGE)
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/AndroidManifest-common.xml b/tests/AndroidManifest-common.xml
index 918ec4a..8222f75 100644
--- a/tests/AndroidManifest-common.xml
+++ b/tests/AndroidManifest-common.xml
@@ -24,7 +24,7 @@
     <uses-permission android:name="android.permission.READ_LOGS"/>
     <uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS"/>
 
-    <application android:debuggable="true">
+    <application android:debuggable="true" android:extractNativeLibs="true">
         <uses-library android:name="android.test.runner"/>
 
         <receiver
diff --git a/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java b/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java
index 33066e4..032a7b4 100644
--- a/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java
+++ b/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java
@@ -25,8 +25,8 @@
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
-import com.android.launcher3.Workspace;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 
 import org.junit.After;
 import org.junit.Test;
@@ -75,7 +75,7 @@
     @Test
     public void testPromiseIcon_addedFromEligibleSession() throws Throwable {
         final String appLabel = "Test Promise App " + UUID.randomUUID().toString();
-        final Workspace.ItemOperator findPromiseApp = (info, view) ->
+        final ItemOperator findPromiseApp = (info, view) ->
                 info != null && TextUtils.equals(info.title, appLabel);
 
         // Create and add test session
@@ -97,7 +97,7 @@
     @Test
     public void testPromiseIcon_notAddedFromIneligibleSession() throws Throwable {
         final String appLabel = "Test Promise App " + UUID.randomUUID().toString();
-        final Workspace.ItemOperator findPromiseApp = (info, view) ->
+        final ItemOperator findPromiseApp = (info, view) ->
                 info != null && TextUtils.equals(info.title, appLabel);
 
         // Create and add test session without icon or label
diff --git a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
index dcb6dc1..1a6ce8c 100644
--- a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
+++ b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
@@ -52,7 +52,6 @@
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.common.WidgetUtils;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.tapl.LauncherInstrumentation;
@@ -63,6 +62,7 @@
 import com.android.launcher3.util.LooperExecutor;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.Wait;
+import com.android.launcher3.util.WidgetUtils;
 import com.android.launcher3.util.rule.FailureWatcher;
 import com.android.launcher3.util.rule.LauncherActivityRule;
 import com.android.launcher3.util.rule.ScreenRecordRule;
@@ -254,26 +254,12 @@
         return mDevice;
     }
 
-    private boolean hasSystemUiObject(String resId) {
-        return mDevice.hasObject(By.res(SYSTEMUI_PACKAGE, resId));
-    }
-
     @Before
     public void setUp() throws Exception {
         mLauncher.onTestStart();
-        Log.d(TAG, "Before disabling battery defender");
-        mDevice.executeShellCommand("setprop vendor.battery.defender.disable 1");
-        Log.d(TAG, "Before enabling stay awake");
-        mDevice.executeShellCommand("settings put global stay_on_while_plugged_in 3");
-        for (int i = 0; i < 10 && hasSystemUiObject("keyguard_status_view"); ++i) {
-            Log.d(TAG, "Before unlocking the phone");
-            mDevice.executeShellCommand("input keyevent 82");
-            mDevice.waitForIdle();
-        }
-        Assert.assertTrue("Keyguard still visible",
+        Assert.assertTrue("Keyguard is visible, which is likely caused by a crash in SysUI",
                 TestHelpers.wait(
                         Until.gone(By.res(SYSTEMUI_PACKAGE, "keyguard_status_view")), 60000));
-        Log.d(TAG, "Keyguard is not visible");
 
         final String launcherPackageName = mDevice.getLauncherPackageName();
         try {
diff --git a/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java b/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java
index 4dd44f4..881f50c 100644
--- a/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java
+++ b/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java
@@ -36,7 +36,6 @@
 import com.android.launcher3.tapl.AppIconMenuItem;
 import com.android.launcher3.tapl.Widgets;
 import com.android.launcher3.tapl.Workspace;
-import com.android.launcher3.util.rule.ScreenRecordRule.ScreenRecord;
 import com.android.launcher3.views.OptionsPopupView;
 import com.android.launcher3.widget.picker.WidgetsFullSheet;
 import com.android.launcher3.widget.picker.WidgetsRecyclerView;
@@ -80,8 +79,12 @@
         assertTrue(message, failed);
     }
 
+    private int pagesPerScreen() {
+        return mLauncher.isTwoPanels() ? 2 : 1;
+    }
+
     private boolean isWorkspaceScrollable(Launcher launcher) {
-        return launcher.getWorkspace().getPageCount() > 1;
+        return launcher.getWorkspace().getPageCount() > pagesPerScreen();
     }
 
     private int getCurrentWorkspacePage(Launcher launcher) {
@@ -93,7 +96,6 @@
     }
 
     @Test
-    @ScreenRecord //b/187080582
     public void testDevicePressMenu() throws Exception {
         mDevice.pressMenu();
         mDevice.waitForIdle();
@@ -195,8 +197,9 @@
         workspace.ensureWorkspaceIsScrollable();
 
         executeOnLauncher(
-                launcher -> assertEquals("Ensuring workspace scrollable didn't switch to page #1",
-                        1, getCurrentWorkspacePage(launcher)));
+                launcher -> assertEquals(
+                        "Ensuring workspace scrollable didn't switch to next screen",
+                        pagesPerScreen(), getCurrentWorkspacePage(launcher)));
         executeOnLauncher(
                 launcher -> assertTrue("ensureScrollable didn't make workspace scrollable",
                         isWorkspaceScrollable(launcher)));
@@ -212,8 +215,8 @@
 
         workspace.flingForward();
         executeOnLauncher(
-                launcher -> assertEquals("Flinging forward didn't switch workspace to page #1",
-                        1, getCurrentWorkspacePage(launcher)));
+                launcher -> assertEquals("Flinging forward didn't switch workspace to next screen",
+                        pagesPerScreen(), getCurrentWorkspacePage(launcher)));
         assertTrue("Launcher internal state is not Home", isInState(() -> LauncherState.NORMAL));
 
         // Test starting a workspace app.
diff --git a/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java
index 4978c01..5ea5d65 100644
--- a/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java
@@ -28,13 +28,13 @@
 import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
 
-import com.android.launcher3.Workspace;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.tapl.Widgets;
 import com.android.launcher3.testcomponent.WidgetConfigActivity;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
 import com.android.launcher3.ui.TestViewHelpers;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Wait;
 import com.android.launcher3.util.Wait.Condition;
 import com.android.launcher3.util.rule.ShellCommandRule;
@@ -121,7 +121,7 @@
     /**
      * Condition for searching widget id
      */
-    private class WidgetSearchCondition implements Condition, Workspace.ItemOperator {
+    private class WidgetSearchCondition implements Condition, ItemOperator {
 
         @Override
         public boolean isTrue() throws Throwable {
diff --git a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
index 9c6c317..fa39ce0 100644
--- a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
@@ -17,7 +17,7 @@
 
 import static androidx.test.InstrumentationRegistry.getTargetContext;
 
-import static com.android.launcher3.common.WidgetUtils.createWidgetInfo;
+import static com.android.launcher3.util.WidgetUtils.createWidgetInfo;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
diff --git a/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java b/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java
index 745dc22..a5694fc 100644
--- a/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java
@@ -30,7 +30,6 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.Workspace.ItemOperator;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
@@ -40,6 +39,7 @@
 import com.android.launcher3.testcomponent.AppWidgetWithConfig;
 import com.android.launcher3.testcomponent.RequestPinItemActivity;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Wait;
 import com.android.launcher3.util.Wait.Condition;
 import com.android.launcher3.util.rule.ScreenRecordRule.ScreenRecord;
@@ -87,7 +87,6 @@
     }
 
     @Test
-    @ScreenRecord  //b/192005114
     public void testPinWidgetNoConfig_customPreview() throws Throwable {
         // Command to set custom preview
         Intent command = RequestPinItemActivity.getCommandIntent(
diff --git a/tests/src_common/com/android/launcher3/common/WidgetUtils.java b/tests/src/com/android/launcher3/util/WidgetUtils.java
similarity index 97%
rename from tests/src_common/com/android/launcher3/common/WidgetUtils.java
rename to tests/src/com/android/launcher3/util/WidgetUtils.java
index 97500e3..7bc752e 100644
--- a/tests/src_common/com/android/launcher3/common/WidgetUtils.java
+++ b/tests/src/com/android/launcher3/util/WidgetUtils.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.launcher3.common;
+package com.android.launcher3.util;
 
 import static com.android.launcher3.WorkspaceLayoutManager.FIRST_SCREEN_ID;
 
@@ -25,7 +25,6 @@
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.util.ContentWriter;
 import com.android.launcher3.widget.LauncherAppWidgetHost;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.widget.PendingAddWidgetInfo;
diff --git a/tests/src/com/android/launcher3/util/rule/FailureWatcher.java b/tests/src/com/android/launcher3/util/rule/FailureWatcher.java
index dc59bdd..0b60ffc 100644
--- a/tests/src/com/android/launcher3/util/rule/FailureWatcher.java
+++ b/tests/src/com/android/launcher3/util/rule/FailureWatcher.java
@@ -13,6 +13,7 @@
 
 import org.junit.rules.TestWatcher;
 import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
 
 import java.io.File;
 import java.io.FileOutputStream;
@@ -38,6 +39,26 @@
     }
 
     @Override
+    public Statement apply(Statement base, Description description) {
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                try {
+                    FailureWatcher.super.apply(base, description).evaluate();
+                } finally {
+                    if (mLauncher.hadNontestEvents()) {
+                        throw new AssertionError(
+                                "Launcher received events not sent by the test. This may mean "
+                                        + "that the touch screen of the lab device has sent false"
+                                        + " events. See the logcat for TaplEvents tag and look "
+                                        + "for events with deviceId != -1");
+                    }
+                }
+            }
+        };
+    }
+
+    @Override
     protected void failed(Throwable e, Description description) {
         onError(mDevice, description, e);
     }
@@ -61,13 +82,23 @@
             out.putNextEntry(new ZipEntry("visible_windows.zip"));
             dumpCommand("cmd window dump-visible-window-views", out);
             out.closeEntry();
-        } catch (IOException ex) { }
+        } catch (IOException ex) {
+        }
 
         Log.e(TAG, "Failed test " + description.getMethodName()
                 + ",\nscreenshot will be saved to " + sceenshot
                 + ",\nUI dump at: " + hierarchy
                 + " (use go/web-hv to open the dump file)", e);
         device.takeScreenshot(sceenshot);
+
+        // Dump accessibility hierarchy
+        final File accessibilityHierarchyFile = new File(parentFile,
+                "AccessibilityHierarchy-" + description.getMethodName() + ".uix");
+        try {
+            device.dumpWindowHierarchy(accessibilityHierarchyFile);
+        } catch (IOException ex) {
+            Log.e(TAG, "Failed to save accessibility hierarchy", ex);
+        }
     }
 
     private static void dumpStringCommand(String cmd, OutputStream out) throws IOException {
diff --git a/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java b/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java
index 6a6ec3e..2093682 100644
--- a/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java
+++ b/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java
@@ -18,7 +18,7 @@
 import android.app.Activity;
 
 import com.android.launcher3.Launcher;
-import com.android.launcher3.Workspace.ItemOperator;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 
 import org.junit.runner.Description;
 import org.junit.runners.model.Statement;
diff --git a/tests/src/com/android/launcher3/util/rule/ShellCommandRule.java b/tests/src/com/android/launcher3/util/rule/ShellCommandRule.java
index 2b2fef4..08953fc 100644
--- a/tests/src/com/android/launcher3/util/rule/ShellCommandRule.java
+++ b/tests/src/com/android/launcher3/util/rule/ShellCommandRule.java
@@ -21,7 +21,6 @@
 
 import android.content.ComponentName;
 import android.content.pm.ActivityInfo;
-import android.util.Log;
 
 import androidx.annotation.Nullable;
 import androidx.test.InstrumentationRegistry;
@@ -103,8 +102,6 @@
      */
     public static ShellCommandRule setDefaultLauncher() {
         final ActivityInfo launcher = getLauncherInMyProcess();
-        Log.d("b/187080582", "Launcher: " + new ComponentName(launcher.packageName, launcher.name)
-                .flattenToString());
         return new ShellCommandRule(getLauncherCommand(launcher), null, true, () ->
                 Assert.assertEquals("Setting default launcher failed",
                         new ComponentName(launcher.packageName, launcher.name)
diff --git a/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java b/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java
index 0e27b61..de36d5f 100644
--- a/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java
+++ b/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java
@@ -41,9 +41,7 @@
             Pattern.compile("^("
                     + "(?<local>(BuildFromAndroidStudio|"
                     + "([0-9]+|[A-Z])-eng\\.[a-z]+\\.[0-9]+\\.[0-9]+))|"
-                    + "(?<presubmit>([0-9]+|[A-Z])-P[0-9]+)|"
-                    + "(?<postsubmit>([0-9]+|[A-Z])-[0-9]+)|"
-                    + "(?<platform>[0-9]+|[A-Z])"
+                    + "(?<platform>[A-Z]([a-z]|[0-9])*)"
                     + ")$");
     private static final Pattern PLATFORM_BUILD =
             Pattern.compile("^("
diff --git a/tests/src_common/README.md b/tests/src_common/README.md
deleted file mode 100644
index 2bc9e73..0000000
--- a/tests/src_common/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Common source code used by both android tests and robolectric tests
\ No newline at end of file
diff --git a/tests/tapl/com/android/launcher3/tapl/AllApps.java b/tests/tapl/com/android/launcher3/tapl/AllApps.java
index 1cb6b2d..78301e4 100644
--- a/tests/tapl/com/android/launcher3/tapl/AllApps.java
+++ b/tests/tapl/com/android/launcher3/tapl/AllApps.java
@@ -135,6 +135,7 @@
                                         .collect(Collectors.toList()),
                                 mLauncher.getVisibleBounds(searchBox).bottom
                                         - mLauncher.getVisibleBounds(allAppsContainer).top);
+                        verifyActiveContainer();
                         final int newScroll = getAllAppsScroll();
                         mLauncher.assertTrue(
                                 "Scrolled in a wrong direction in AllApps: from " + scroll + " to "
@@ -144,7 +145,6 @@
                         mLauncher.assertTrue(
                                 "Exceeded max scroll attempts: " + MAX_SCROLL_ATTEMPTS,
                                 ++attempts <= MAX_SCROLL_ATTEMPTS);
-                        verifyActiveContainer();
                         scroll = newScroll;
                     }
                 }
diff --git a/tests/tapl/com/android/launcher3/tapl/Background.java b/tests/tapl/com/android/launcher3/tapl/Background.java
index 4b1610e..b290bb1 100644
--- a/tests/tapl/com/android/launcher3/tapl/Background.java
+++ b/tests/tapl/com/android/launcher3/tapl/Background.java
@@ -68,6 +68,10 @@
     }
 
     protected boolean zeroButtonToOverviewGestureStartsInLauncher() {
+        return mLauncher.isTablet();
+    }
+
+    protected boolean zeroButtonToOverviewGestureStateTransitionWhileHolding() {
         return false;
     }
 
@@ -90,21 +94,32 @@
 
                 mLauncher.sendPointer(
                         downTime, downTime, MotionEvent.ACTION_DOWN, start, gestureScope);
-                mLauncher.executeAndWaitForLauncherEvent(
-                        () -> mLauncher.movePointer(
-                                downTime,
-                                downTime,
-                                ZERO_BUTTON_SWIPE_UP_GESTURE_DURATION,
-                                start,
-                                end,
-                                gestureScope),
-                        event -> TestProtocol.PAUSE_DETECTED_MESSAGE.equals(event.getClassName()),
-                        () -> "Pause wasn't detected", "swiping and holding");
-                mLauncher.runToState(
-                        () -> mLauncher.sendPointer(
-                                downTime, SystemClock.uptimeMillis(), MotionEvent.ACTION_UP, end,
-                                gestureScope),
-                        OVERVIEW_STATE_ORDINAL, "sending UP event");
+                Runnable swipeAndHold = () -> mLauncher.movePointer(
+                        downTime,
+                        downTime,
+                        ZERO_BUTTON_SWIPE_UP_GESTURE_DURATION,
+                        start,
+                        end,
+                        gestureScope);
+                String swipeAndHoldAction = "swiping and holding";
+                Runnable up = () -> mLauncher.sendPointer(
+                        downTime, SystemClock.uptimeMillis(), MotionEvent.ACTION_UP, end,
+                        gestureScope);
+                String upAction = "sending UP event";
+                if (zeroButtonToOverviewGestureStateTransitionWhileHolding()) {
+                    mLauncher.runToState(swipeAndHold, OVERVIEW_STATE_ORDINAL, swipeAndHoldAction);
+                    try (LauncherInstrumentation.Closable c = mLauncher.addContextLayer(upAction)) {
+                        up.run();
+                    }
+                } else {
+                    mLauncher.executeAndWaitForLauncherEvent(
+                            swipeAndHold,
+                            event -> TestProtocol.PAUSE_DETECTED_MESSAGE.equals(
+                                    event.getClassName()),
+                            () -> "Pause wasn't detected",
+                            swipeAndHoldAction);
+                    mLauncher.runToState(up, OVERVIEW_STATE_ORDINAL, upAction);
+                }
                 break;
             }
 
@@ -134,9 +149,15 @@
             }
 
             case THREE_BUTTON:
+                if (mLauncher.isTablet()) {
+                    mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN,
+                            LauncherInstrumentation.EVENT_TOUCH_DOWN);
+                    mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN,
+                            LauncherInstrumentation.EVENT_TOUCH_UP);
+                }
                 mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
                 mLauncher.runToState(
-                        () -> mLauncher.waitForSystemUiObject("recent_apps").click(),
+                        () -> mLauncher.waitForNavigationUiObject("recent_apps").click(),
                         OVERVIEW_STATE_ORDINAL, "clicking Recents button");
                 break;
         }
@@ -224,11 +245,23 @@
 
                 case THREE_BUTTON:
                     // Double press the recents button.
-                    UiObject2 recentsButton = mLauncher.waitForSystemUiObject("recent_apps");
+                    UiObject2 recentsButton = mLauncher.waitForNavigationUiObject("recent_apps");
+                    if (mLauncher.isTablet()) {
+                        mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN,
+                                LauncherInstrumentation.EVENT_TOUCH_DOWN);
+                        mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN,
+                                LauncherInstrumentation.EVENT_TOUCH_UP);
+                    }
                     mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
                     mLauncher.runToState(() -> recentsButton.click(), OVERVIEW_STATE_ORDINAL,
                             "clicking Recents button for the first time");
                     mLauncher.getOverview();
+                    if (mLauncher.isTablet()) {
+                        mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN,
+                                LauncherInstrumentation.EVENT_TOUCH_DOWN);
+                        mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN,
+                                LauncherInstrumentation.EVENT_TOUCH_UP);
+                    }
                     mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
                     mLauncher.executeAndWaitForEvent(
                             () -> recentsButton.click(),
diff --git a/tests/tapl/com/android/launcher3/tapl/Home.java b/tests/tapl/com/android/launcher3/tapl/Home.java
index 0060844..ee9dd1a 100644
--- a/tests/tapl/com/android/launcher3/tapl/Home.java
+++ b/tests/tapl/com/android/launcher3/tapl/Home.java
@@ -63,4 +63,8 @@
         return true;
     }
 
+    @Override
+    protected boolean zeroButtonToOverviewGestureStateTransitionWhileHolding() {
+        return true;
+    }
 }
\ No newline at end of file
diff --git a/tests/tapl/com/android/launcher3/tapl/Launchable.java b/tests/tapl/com/android/launcher3/tapl/Launchable.java
index a15131d..7ec5208 100644
--- a/tests/tapl/com/android/launcher3/tapl/Launchable.java
+++ b/tests/tapl/com/android/launcher3/tapl/Launchable.java
@@ -56,24 +56,29 @@
     protected abstract String launchableType();
 
     private Background launch(BySelector selector) {
-        LauncherInstrumentation.log("Launchable.launch before click "
-                + mObject.getVisibleCenter() + " in " + mLauncher.getVisibleBounds(mObject));
-        final String label = mObject.getText();
+        try (LauncherInstrumentation.Closable c = mLauncher.addContextLayer(
+                "want to launch an app from " + launchableType())) {
+            LauncherInstrumentation.log("Launchable.launch before click "
+                    + mObject.getVisibleCenter() + " in " + mLauncher.getVisibleBounds(mObject));
+            final String label = mObject.getText();
 
-        mLauncher.executeAndWaitForEvent(
-                () -> {
-                    mLauncher.clickLauncherObject(mObject);
-                    expectActivityStartEvents();
-                },
-                event -> event.getEventType() == TYPE_WINDOW_STATE_CHANGED,
-                () -> "Launching an app didn't open a new window: " + label,
-                "clicking " + launchableType());
+            mLauncher.executeAndWaitForEvent(
+                    () -> {
+                        mLauncher.clickLauncherObject(mObject);
+                        expectActivityStartEvents();
+                    },
+                    event -> event.getEventType() == TYPE_WINDOW_STATE_CHANGED,
+                    () -> "Launching an app didn't open a new window: " + label,
+                    "clicking " + launchableType());
 
-        mLauncher.assertTrue(
-                "App didn't start: " + label + " (" + selector + ")",
-                TestHelpers.wait(Until.hasObject(selector),
-                        LauncherInstrumentation.WAIT_TIME_MS));
-        return new Background(mLauncher);
+            try (LauncherInstrumentation.Closable c1 = mLauncher.addContextLayer("clicked")) {
+                mLauncher.assertTrue(
+                        "App didn't start: " + label + " (" + selector + ")",
+                        TestHelpers.wait(Until.hasObject(selector),
+                                LauncherInstrumentation.WAIT_TIME_MS));
+                return new Background(mLauncher);
+            }
+        }
     }
 
     /**
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 19094f8..23aaa25 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -80,6 +80,7 @@
 import java.util.Deque;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -96,15 +97,17 @@
     private static final String TAG = "Tapl";
     private static final int ZERO_BUTTON_STEPS_FROM_BACKGROUND_TO_HOME = 20;
     private static final int GESTURE_STEP_MS = 16;
+    private static final long FORCE_PAUSE_TIMEOUT_MS = TimeUnit.SECONDS.toMillis(2);
 
-    private static final Pattern EVENT_TOUCH_DOWN = getTouchEventPattern("ACTION_DOWN");
-    private static final Pattern EVENT_TOUCH_UP = getTouchEventPattern("ACTION_UP");
+    static final Pattern EVENT_TOUCH_DOWN = getTouchEventPattern("ACTION_DOWN");
+    static final Pattern EVENT_TOUCH_UP = getTouchEventPattern("ACTION_UP");
     private static final Pattern EVENT_TOUCH_CANCEL = getTouchEventPattern("ACTION_CANCEL");
     private static final Pattern EVENT_PILFER_POINTERS = Pattern.compile("pilferPointers");
     static final Pattern EVENT_START = Pattern.compile("start:");
 
     static final Pattern EVENT_TOUCH_DOWN_TIS = getTouchEventPatternTIS("ACTION_DOWN");
     static final Pattern EVENT_TOUCH_UP_TIS = getTouchEventPatternTIS("ACTION_UP");
+
     private final String mLauncherPackage;
     private Boolean mIsLauncher3;
     private long mTestStartTime = -1;
@@ -123,8 +126,6 @@
         OUTSIDE_WITHOUT_PILFER, OUTSIDE_WITH_PILFER, INSIDE, INSIDE_TO_OUTSIDE
     }
 
-    ;
-
     // Base class for launcher containers.
     static abstract class VisibleContainer {
         protected final LauncherInstrumentation mLauncher;
@@ -207,6 +208,11 @@
     public LauncherInstrumentation(Instrumentation instrumentation) {
         mInstrumentation = instrumentation;
         mDevice = UiDevice.getInstance(instrumentation);
+        try {
+            mDevice.executeShellCommand("am wait-for-broadcast-idle");
+        } catch (IOException e) {
+            log("Failed to wait for broadcast idle");
+        }
 
         // Launcher should run in test harness so that custom accessibility protocol between
         // Launcher and TAPL is enabled. In-process tests enable this protocol with a direct call
@@ -245,8 +251,19 @@
             } else {
                 try {
                     final int userId = ContextUtils.getUserId(getContext());
+                    final String launcherPidCommand = "pidof " + pi.packageName;
+                    final String initialPid = mDevice.executeShellCommand(launcherPidCommand)
+                            .replaceAll("\\s", "");
                     mDevice.executeShellCommand(
                             "pm enable --user " + userId + " " + cn.flattenToString());
+                    // Wait for Launcher restart after enabling test provider.
+                    for (int i = 0; i < 100; ++i) {
+                        final String currentPid = mDevice.executeShellCommand(launcherPidCommand)
+                                .replaceAll("\\s", "");
+                        if (!currentPid.isEmpty() && !currentPid.equals(initialPid)) break;
+                        if (i == 99) fail("Launcher didn't restart after enabling test provider");
+                        SystemClock.sleep(100);
+                    }
                 } catch (IOException e) {
                     fail(e.toString());
                 }
@@ -267,9 +284,13 @@
     }
 
     Bundle getTestInfo(String request) {
+        return getTestInfo(request, /*arg=*/ null);
+    }
+
+    Bundle getTestInfo(String request, String arg) {
         try (ContentProviderClient client = getContext().getContentResolver()
                 .acquireContentProviderClient(mTestProviderUri)) {
-            return client.call(request, null, null);
+            return client.call(request, arg, null);
         } catch (DeadObjectException e) {
             fail("Launcher crashed");
             return null;
@@ -279,10 +300,34 @@
     }
 
     Insets getTargetInsets() {
+        return getTestInfo(TestProtocol.REQUEST_TARGET_INSETS)
+                .getParcelable(TestProtocol.TEST_INFO_RESPONSE_FIELD);
+    }
+
+    Insets getWindowInsets() {
         return getTestInfo(TestProtocol.REQUEST_WINDOW_INSETS)
                 .getParcelable(TestProtocol.TEST_INFO_RESPONSE_FIELD);
     }
 
+    public boolean isTablet() {
+        return getTestInfo(TestProtocol.REQUEST_IS_TABLET)
+                .getBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD);
+    }
+
+    public boolean isTwoPanels() {
+        return getTestInfo(TestProtocol.REQUEST_IS_TWO_PANELS)
+                .getBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD);
+    }
+
+    private void setForcePauseTimeout(long timeout) {
+        getTestInfo(TestProtocol.REQUEST_SET_FORCE_PAUSE_TIMEOUT, Long.toString(timeout));
+    }
+
+    public boolean hadNontestEvents() {
+        return getTestInfo(TestProtocol.REQUEST_GET_HAD_NONTEST_EVENTS)
+                .getBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD);
+    }
+
     void setActiveContainer(VisibleContainer container) {
         sActiveContainer = new WeakReference<>(container);
     }
@@ -368,6 +413,14 @@
 
             if (hasSystemUiObject("keyguard_status_view")) return "Phone is locked";
 
+            final String visibleApps = mDevice.findObjects(getAnyObjectSelector())
+                    .stream()
+                    .map(LauncherInstrumentation::getApplicationPackageSafe)
+                    .distinct()
+                    .filter(pkg -> pkg != null)
+                    .collect(Collectors.joining(","));
+            if (SYSTEMUI_PACKAGE.equals(visibleApps)) return "Only System UI views are visible";
+
             if (!mDevice.wait(Until.hasObject(getAnyObjectSelector()), WAIT_TIME_MS)) {
                 return "Screen is empty";
             }
@@ -391,12 +444,15 @@
     }
 
     private String getVisiblePackages() {
-        return mDevice.findObjects(getAnyObjectSelector())
+        final String apps = mDevice.findObjects(getAnyObjectSelector())
                 .stream()
                 .map(LauncherInstrumentation::getApplicationPackageSafe)
                 .distinct()
-                .filter(pkg -> pkg != null && !"com.android.systemui".equals(pkg))
+                .filter(pkg -> pkg != null && !SYSTEMUI_PACKAGE.equals(pkg))
                 .collect(Collectors.joining(", "));
+        return !apps.isEmpty()
+                ? "active app: " + apps
+                : "the test doesn't see views from any app, including Launcher";
     }
 
     private static String getApplicationPackageSafe(UiObject2 object) {
@@ -499,9 +555,8 @@
     void fail(String message) {
         checkForAnomaly();
         Assert.fail(formatSystemHealthMessage(formatErrorWithEvents(
-                "http://go/tapl test failure:\nContext: " + getContextDescription()
-                        + " - visible state is " + getVisibleStateMessage()
-                        + ";\nDetails: " + message, true)));
+                "http://go/tapl test failure: " + message + ";\nContext: " + getContextDescription()
+                        + "; now visible state is " + getVisibleStateMessage(), true)));
     }
 
     private String getContextDescription() {
@@ -554,29 +609,33 @@
     public String getNavigationModeMismatchError(boolean waitForCorrectState) {
         final int waitTime = waitForCorrectState ? WAIT_TIME_MS : 0;
         final NavigationModel navigationModel = getNavigationModel();
-
+        String resPackage = getNavigationButtonResPackage();
         if (navigationModel == NavigationModel.THREE_BUTTON) {
-            if (!mDevice.wait(Until.hasObject(By.res(SYSTEMUI_PACKAGE, "recent_apps")), waitTime)) {
+            if (!mDevice.wait(Until.hasObject(By.res(resPackage, "recent_apps")), waitTime)) {
                 return "Recents button not present in 3-button mode";
             }
         } else {
-            if (!mDevice.wait(Until.gone(By.res(SYSTEMUI_PACKAGE, "recent_apps")), waitTime)) {
+            if (!mDevice.wait(Until.gone(By.res(resPackage, "recent_apps")), waitTime)) {
                 return "Recents button is present in non-3-button mode";
             }
         }
 
         if (navigationModel == NavigationModel.ZERO_BUTTON) {
-            if (!mDevice.wait(Until.gone(By.res(SYSTEMUI_PACKAGE, "home")), waitTime)) {
+            if (!mDevice.wait(Until.gone(By.res(resPackage, "home")), waitTime)) {
                 return "Home button is present in gestural mode";
             }
         } else {
-            if (!mDevice.wait(Until.hasObject(By.res(SYSTEMUI_PACKAGE, "home")), waitTime)) {
+            if (!mDevice.wait(Until.hasObject(By.res(resPackage, "home")), waitTime)) {
                 return "Home button not present in non-gestural mode";
             }
         }
         return null;
     }
 
+    private String getNavigationButtonResPackage() {
+        return isTablet() ? getLauncherPackageName() : SYSTEMUI_PACKAGE;
+    }
+
     private UiObject2 verifyContainerType(ContainerType containerType) {
         waitForLauncherInitialized();
 
@@ -688,7 +747,8 @@
      * @return the Workspace object.
      */
     public Workspace pressHome() {
-        try (LauncherInstrumentation.Closable e = eventsCheck()) {
+        try (LauncherInstrumentation.Closable e = eventsCheck();
+             LauncherInstrumentation.Closable c = addContextLayer("want to switch to home")) {
             waitForLauncherInitialized();
             // Click home, then wait for any accessibility event, then wait until accessibility
             // events stop.
@@ -696,24 +756,27 @@
             // otherwise waitForIdle may return immediately in case when there was a big enough
             // pause in accessibility events prior to pressing Home.
             final String action;
-            final boolean launcherWasVisible = isLauncherVisible();
             if (getNavigationModel() == NavigationModel.ZERO_BUTTON) {
                 checkForAnomaly();
+                setForcePauseTimeout(FORCE_PAUSE_TIMEOUT_MS);
 
                 final Point displaySize = getRealDisplaySize();
+                boolean gestureStartFromLauncher = isTablet()
+                        ? !isLauncher3() || hasLauncherObject(WORKSPACE_RES_ID)
+                        : isLauncherVisible();
 
                 if (hasLauncherObject(CONTEXT_MENU_RES_ID)) {
+                    GestureScope gestureScope = gestureStartFromLauncher
+                            ? (isTablet()? GestureScope.INSIDE : GestureScope.INSIDE_TO_OUTSIDE)
+                            : GestureScope.OUTSIDE_WITH_PILFER;
                     linearGesture(
                             displaySize.x / 2, displaySize.y - 1,
                             displaySize.x / 2, 0,
                             ZERO_BUTTON_STEPS_FROM_BACKGROUND_TO_HOME,
-                            false, GestureScope.INSIDE_TO_OUTSIDE);
-                    try (LauncherInstrumentation.Closable c = addContextLayer(
+                            false, gestureScope);
+                    try (LauncherInstrumentation.Closable c1 = addContextLayer(
                             "Swiped up from context menu to home")) {
                         waitUntilLauncherObjectGone(CONTEXT_MENU_RES_ID);
-                        // Swiping up can temporarily bring Nexus Launcher if the current
-                        // Launcher is a Launcher3 one. Wait for the current launcher to reappear.
-                        SystemClock.sleep(5000); // b/187080582
                         waitForLauncherObject(getAnyObjectSelector());
                     }
                 }
@@ -728,8 +791,7 @@
                             displaySize.x / 2, displaySize.y - 1,
                             displaySize.x / 2, 0,
                             ZERO_BUTTON_STEPS_FROM_BACKGROUND_TO_HOME, NORMAL_STATE_ORDINAL,
-                            launcherWasVisible
-                                    ? GestureScope.INSIDE_TO_OUTSIDE
+                            gestureStartFromLauncher ? GestureScope.INSIDE_TO_OUTSIDE
                                     : GestureScope.OUTSIDE_WITH_PILFER);
                 }
             } else {
@@ -740,16 +802,20 @@
                     expectEvent(TestProtocol.SEQUENCE_TIS, EVENT_TOUCH_DOWN_TIS);
                     expectEvent(TestProtocol.SEQUENCE_TIS, EVENT_TOUCH_UP_TIS);
                 }
+                if (isTablet()) {
+                    expectEvent(TestProtocol.SEQUENCE_MAIN, EVENT_TOUCH_DOWN);
+                    expectEvent(TestProtocol.SEQUENCE_MAIN, EVENT_TOUCH_UP);
+                }
 
                 runToState(
-                        waitForSystemUiObject("home")::click,
+                        waitForNavigationUiObject("home")::click,
                         NORMAL_STATE_ORDINAL,
                         !hasLauncherObject(WORKSPACE_RES_ID)
                                 && (hasLauncherObject(APPS_RES_ID)
                                 || hasLauncherObject(OVERVIEW_RES_ID)),
                         action);
             }
-            try (LauncherInstrumentation.Closable c = addContextLayer(
+            try (LauncherInstrumentation.Closable c1 = addContextLayer(
                     "performed action to switch to Home - " + action)) {
                 return getWorkspace();
             }
@@ -892,6 +958,15 @@
         return object;
     }
 
+    @NonNull
+    UiObject2 waitForNavigationUiObject(String resId) {
+        String resPackage = getNavigationButtonResPackage();
+        final UiObject2 object = mDevice.wait(
+                Until.findObject(By.res(resPackage, resId)), WAIT_TIME_MS);
+        assertNotNull("Can't find a navigation UI object with id: " + resId, object);
+        return object;
+    }
+
     @Nullable
     UiObject2 findObjectInContainer(UiObject2 container, BySelector selector) {
         try {
@@ -930,7 +1005,7 @@
     void waitForObjectEnabled(UiObject2 object, String waitReason) {
         try {
             assertTrue("Timed out waiting for object to be enabled for " + waitReason + " "
-                    + object.getResourceName(),
+                            + object.getResourceName(),
                     object.wait(Until.enabled(true), WAIT_TIME_MS));
         } catch (StaleObjectException e) {
             fail("The object disappeared from screen");
@@ -1049,7 +1124,7 @@
                 () -> "Failed to receive an event for the state change: expected ["
                         + TestProtocol.stateOrdinalToString(expectedState)
                         + "], actual: " + eventListToString(actualEvents),
-                        actionName);
+                actionName);
     }
 
     private boolean isSwitchToStateEvent(
@@ -1070,9 +1145,9 @@
                 "swiping");
     }
 
-    private int getBottomGestureSize() {
-        return ResourceUtils.getNavbarSize(
-                ResourceUtils.NAVBAR_BOTTOM_GESTURE_SIZE, getResources()) + 1;
+    int getBottomGestureSize() {
+        return Math.max(getWindowInsets().bottom, ResourceUtils.getNavbarSize(
+                ResourceUtils.NAVBAR_BOTTOM_GESTURE_SIZE, getResources())) + 1;
     }
 
     int getBottomGestureMarginInContainer(UiObject2 container) {
@@ -1176,7 +1251,7 @@
                 event -> TestProtocol.SCROLL_FINISHED_MESSAGE.equals(event.getClassName()),
                 () -> "Didn't receive a scroll end message: " + startX + ", " + startY
                         + ", " + endX + ", " + endY,
-                        "scrolling");
+                "scrolling");
     }
 
     // Inject a swipe gesture. Inject exactly 'steps' motion points, incrementing event time by a
@@ -1267,13 +1342,6 @@
         }
 
         final MotionEvent event = getMotionEvent(downTime, currentTime, action, point.x, point.y);
-        // b/190748682
-        switch (action) {
-            case MotionEvent.ACTION_DOWN:
-            case MotionEvent.ACTION_UP:
-                log("b/190748682: injecting " + event);
-                break;
-        }
         assertTrue("injectInputEvent failed",
                 mInstrumentation.getUiAutomation().injectInputEvent(event, true, false));
         event.recycle();
diff --git a/tests/tapl/com/android/launcher3/tapl/OverviewTask.java b/tests/tapl/com/android/launcher3/tapl/OverviewTask.java
index 657b74d..71c0abb 100644
--- a/tests/tapl/com/android/launcher3/tapl/OverviewTask.java
+++ b/tests/tapl/com/android/launcher3/tapl/OverviewTask.java
@@ -59,9 +59,14 @@
             final Rect taskBounds = mLauncher.getVisibleBounds(mTask);
             final int centerX = taskBounds.centerX();
             final int centerY = taskBounds.centerY();
-            mLauncher.linearGesture(centerX, centerY, centerX, 0, 10, false,
-                    LauncherInstrumentation.GestureScope.INSIDE);
-            mLauncher.waitForIdle();
+            mLauncher.executeAndWaitForLauncherEvent(
+                    () -> mLauncher.linearGesture(centerX, centerY, centerX, 0, 10, false,
+                            LauncherInstrumentation.GestureScope.INSIDE),
+                    event -> TestProtocol.DISMISS_ANIMATION_ENDS_MESSAGE.equals(
+                            event.getClassName()),
+                    () -> "Didn't receive a dismiss animation ends message: " + centerX + ", "
+                            + centerY,
+                    "swiping to dismiss");
         }
     }
 
diff --git a/tests/tapl/com/android/launcher3/tapl/Workspace.java b/tests/tapl/com/android/launcher3/tapl/Workspace.java
index 43134d9..db2e250 100644
--- a/tests/tapl/com/android/launcher3/tapl/Workspace.java
+++ b/tests/tapl/com/android/launcher3/tapl/Workspace.java
@@ -34,7 +34,6 @@
 import androidx.test.uiautomator.Direction;
 import androidx.test.uiautomator.UiObject2;
 
-import com.android.launcher3.ResourceUtils;
 import com.android.launcher3.testing.TestProtocol;
 
 import java.util.regex.Pattern;
@@ -63,7 +62,7 @@
     /**
      * Swipes up to All Apps.
      *
-     * @return the App Apps object.
+     * @return the All Apps object.
      */
     @NonNull
     public AllApps switchToAllApps() {
@@ -72,8 +71,7 @@
                      mLauncher.addContextLayer("want to switch from workspace to all apps")) {
             verifyActiveContainer();
             final int deviceHeight = mLauncher.getDevice().getDisplayHeight();
-            final int bottomGestureMargin = ResourceUtils.getNavbarSize(
-                    ResourceUtils.NAVBAR_BOTTOM_GESTURE_SIZE, mLauncher.getResources());
+            final int bottomGestureMargin = mLauncher.getBottomGestureSize();
             final int windowCornerRadius = (int) Math.ceil(mLauncher.getWindowCornerRadius());
             final int startY = deviceHeight - Math.max(bottomGestureMargin, windowCornerRadius) - 1;
             final int swipeHeight = mLauncher.getTestInfo(
@@ -163,7 +161,7 @@
     }
 
     private boolean isWorkspaceScrollable(UiObject2 workspace) {
-        return workspace.getChildCount() > 1;
+        return workspace.getChildCount() > (mLauncher.isTwoPanels() ? 2 : 1);
     }
 
     @NonNull