diff --git a/build.gradle b/build.gradle
index 7ac4127..b59f264 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0-beta05'
+        classpath 'com.android.tools.build:gradle:3.2.0-rc03'
         classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.6'
     }
 }
@@ -16,7 +16,7 @@
 
 android {
     compileSdkVersion 28
-    buildToolsVersion '28.0.0'
+    buildToolsVersion '28.0.2'
 
     defaultConfig {
         minSdkVersion 21
diff --git a/proguard.flags b/proguard.flags
index a312b91..bb52a6c 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -2,80 +2,6 @@
   *;
 }
 
--keep class com.android.launcher3.allapps.AllAppsBackgroundDrawable {
-  public void setAlpha(int);
-  public int getAlpha();
-}
-
--keep class com.android.launcher3.BaseRecyclerViewFastScrollBar {
-  public void setThumbWidth(int);
-  public int getThumbWidth();
-  public void setTrackWidth(int);
-  public int getTrackWidth();
-}
-
--keep class com.android.launcher3.BaseRecyclerViewFastScrollPopup {
-  public void setAlpha(float);
-  public float getAlpha();
-}
-
--keep class com.android.launcher3.ButtonDropTarget {
-  public int getTextColor();
-}
-
--keep class com.android.launcher3.CellLayout {
-  public float getBackgroundAlpha();
-  public void setBackgroundAlpha(float);
-}
-
--keep class com.android.launcher3.CellLayout$LayoutParams {
-  public void setWidth(int);
-  public int getWidth();
-  public void setHeight(int);
-  public int getHeight();
-  public void setX(int);
-  public int getX();
-  public void setY(int);
-  public int getY();
-}
-
--keep class com.android.launcher3.views.BaseDragLayer$LayoutParams {
-  public void setWidth(int);
-  public int getWidth();
-  public void setHeight(int);
-  public int getHeight();
-  public void setX(int);
-  public int getX();
-  public void setY(int);
-  public int getY();
-}
-
--keep class com.android.launcher3.FastBitmapDrawable {
-  public void setDesaturation(float);
-  public float getDesaturation();
-  public void setBrightness(float);
-  public float getBrightness();
-}
-
--keep class com.android.launcher3.MemoryDumpActivity {
-  *;
-}
-
--keep class com.android.launcher3.PreloadIconDrawable {
-  public float getAnimationProgress();
-  public void setAnimationProgress(float);
-}
-
--keep class com.android.launcher3.pageindicators.CaretDrawable {
-  public float getCaretProgress();
-  public void setCaretProgress(float);
-}
-
--keep class com.android.launcher3.Workspace {
-  public float getBackgroundAlpha();
-  public void setBackgroundAlpha(float);
-}
-
 # Proguard will strip new callbacks in LauncherApps.Callback from
 # WrappedCallback if compiled against an older SDK. Don't let this happen.
 -keep class com.android.launcher3.compat.** {
diff --git a/quickstep/src/com/android/launcher3/uioverrides/StatusBarTouchController.java b/quickstep/src/com/android/launcher3/uioverrides/StatusBarTouchController.java
new file mode 100644
index 0000000..4d56786
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/uioverrides/StatusBarTouchController.java
@@ -0,0 +1,118 @@
+/*
+ * 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.uioverrides;
+
+import static android.view.MotionEvent.ACTION_DOWN;
+import static android.view.MotionEvent.ACTION_MOVE;
+
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.touch.TouchEventTranslator;
+import com.android.launcher3.util.TouchController;
+import com.android.quickstep.RecentsModel;
+import com.android.systemui.shared.recents.ISystemUiProxy;
+
+/**
+ * TouchController for handling touch events that get sent to the StatusBar. Once the
+ * Once the event delta y passes the touch slop, the events start getting forwarded.
+ * All events are offset by initial Y value of the pointer.
+ */
+public class StatusBarTouchController implements TouchController {
+
+    private static final String TAG = "StatusBarController";
+
+    protected final Launcher mLauncher;
+    protected final TouchEventTranslator mTranslator;
+    private final float mTouchSlop;
+    private ISystemUiProxy mSysUiProxy;
+
+    /* If {@code false}, this controller should not handle the input {@link MotionEvent}.*/
+    private boolean mCanIntercept;
+
+    public StatusBarTouchController(Launcher l) {
+        mLauncher = l;
+        mTouchSlop = ViewConfiguration.get(l).getScaledTouchSlop();
+        mTranslator = new TouchEventTranslator((MotionEvent ev)-> dispatchTouchEvent(ev));
+    }
+
+    private void dispatchTouchEvent(MotionEvent ev) {
+        try {
+            if (mSysUiProxy != null) {
+                mSysUiProxy.onStatusBarMotionEvent(ev);
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "Remote exception on sysUiProxy.", e);
+        }
+    }
+
+    @Override
+    public final boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        int action = ev.getActionMasked();
+        if (action == ACTION_DOWN) {
+            mCanIntercept = canInterceptTouch(ev);
+            if (!mCanIntercept) {
+                return false;
+            }
+            mTranslator.reset();
+            mTranslator.setDownParameters(0, ev);
+        } else if (ev.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN) {
+            // Check!! should only set it only when threshold is not entered.
+            mTranslator.setDownParameters(ev.getActionIndex(), ev);
+        }
+        if (!mCanIntercept) {
+            return false;
+        }
+        if (action == ACTION_MOVE) {
+            float dy = ev.getY() - mTranslator.getDownY();
+            if (dy > mTouchSlop) {
+                mTranslator.dispatchDownEvents(ev);
+                mTranslator.processMotionEvent(ev);
+                return true;
+            }
+        }
+        return false;
+    }
+
+
+    @Override
+    public final boolean onControllerTouchEvent(MotionEvent ev) {
+        mTranslator.processMotionEvent(ev);
+        return true;
+    }
+
+    private boolean canInterceptTouch(MotionEvent ev) {
+        if (!mLauncher.isInState(LauncherState.NORMAL) ||
+                AbstractFloatingView.getTopOpenViewWithType(mLauncher,
+                        AbstractFloatingView.TYPE_STATUS_BAR_SWIPE_DOWN_DISALLOW) != null) {
+            return false;
+        } else {
+            // For NORMAL state, only listen if the event originated above the navbar height
+            DeviceProfile dp = mLauncher.getDeviceProfile();
+            if (ev.getY() > (mLauncher.getDragLayer().getHeight() - dp.getInsets().bottom)) {
+                return false;
+            }
+        }
+        mSysUiProxy = RecentsModel.INSTANCE.get(mLauncher).getSystemUiProxy();
+        return mSysUiProxy != null;
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java b/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
index c939330..5980d85 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/UiFactory.java
@@ -42,6 +42,7 @@
 import com.android.launcher3.LauncherStateManager.StateHandler;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.util.TouchController;
 import com.android.quickstep.OverviewInteractionState;
 import com.android.quickstep.RecentsModel;
@@ -52,6 +53,7 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintWriter;
+import java.util.ArrayList;
 import java.util.zip.Deflater;
 
 public class UiFactory {
@@ -59,24 +61,25 @@
     public static TouchController[] createTouchControllers(Launcher launcher) {
         boolean swipeUpEnabled = OverviewInteractionState.INSTANCE.get(launcher)
                 .isSwipeUpGestureEnabled();
-        if (!swipeUpEnabled) {
-            return new TouchController[] {
-                    launcher.getDragController(),
-                    new OverviewToAllAppsTouchController(launcher),
-                    new LauncherTaskViewController(launcher)};
+        ArrayList<TouchController> list = new ArrayList<>();
+        list.add(launcher.getDragController());
+
+        if (!swipeUpEnabled || launcher.getDeviceProfile().isVerticalBarLayout()) {
+            list.add(new OverviewToAllAppsTouchController(launcher));
         }
+
         if (launcher.getDeviceProfile().isVerticalBarLayout()) {
-            return new TouchController[] {
-                    launcher.getDragController(),
-                    new OverviewToAllAppsTouchController(launcher),
-                    new LandscapeEdgeSwipeController(launcher),
-                    new LauncherTaskViewController(launcher)};
+            list.add(new LandscapeEdgeSwipeController(launcher));
         } else {
-            return new TouchController[] {
-                    launcher.getDragController(),
-                    new PortraitStatesTouchController(launcher),
-                    new LauncherTaskViewController(launcher)};
+            list.add(new PortraitStatesTouchController(launcher));
         }
+        if (FeatureFlags.PULL_DOWN_STATUS_BAR && Utilities.IS_DEBUG_DEVICE
+                && !launcher.getDeviceProfile().isMultiWindowMode
+                && !launcher.getDeviceProfile().isVerticalBarLayout()) {
+            list.add(new StatusBarTouchController(launcher));
+        }
+        list.add(new LauncherTaskViewController(launcher));
+        return list.toArray(new TouchController[list.size()]);
     }
 
     public static void setOnTouchControllersChangedListener(Context context, Runnable listener) {
diff --git a/quickstep/src/com/android/quickstep/util/ClipAnimationHelper.java b/quickstep/src/com/android/quickstep/util/ClipAnimationHelper.java
index c3ce439..8aaa40c 100644
--- a/quickstep/src/com/android/quickstep/util/ClipAnimationHelper.java
+++ b/quickstep/src/com/android/quickstep/util/ClipAnimationHelper.java
@@ -239,7 +239,7 @@
             updateStackBoundsToMultiWindowTaskSize(activity);
         } else {
             mSourceStackBounds.set(mHomeStackBounds);
-            mSourceInsets.set(activity.getDeviceProfile().getInsets());
+            mSourceInsets.set(ttv.getInsets());
         }
 
         TransformedRect targetRect = new TransformedRect();
diff --git a/res/values-ta/strings.xml b/res/values-ta/strings.xml
index 253e3af..ed0f09d 100644
--- a/res/values-ta/strings.xml
+++ b/res/values-ta/strings.xml
@@ -114,8 +114,7 @@
     <string name="action_move_here" msgid="2170188780612570250">"இங்கு நகர்த்து"</string>
     <string name="item_added_to_workspace" msgid="4211073925752213539">"முகப்புத் திரையில் சேர்க்கப்பட்டது"</string>
     <string name="item_removed" msgid="851119963877842327">"அகற்றப்பட்டது"</string>
-    <!-- no translation found for undo (4151576204245173321) -->
-    <skip />
+    <string name="undo" msgid="4151576204245173321">"செயல்தவிர்"</string>
     <string name="action_move" msgid="4339390619886385032">"நகர்த்து"</string>
     <string name="move_to_empty_cell" msgid="2833711483015685619">"<xliff:g id="NUMBER_0">%1$s</xliff:g> வரிசை, <xliff:g id="NUMBER_1">%2$s</xliff:g> நெடுவரிசைக்கு நகர்த்து"</string>
     <string name="move_to_position" msgid="6750008980455459790">"நிலை <xliff:g id="NUMBER">%1$s</xliff:g>க்கு நகர்த்து"</string>
diff --git a/res/values/config.xml b/res/values/config.xml
index 2a6b25c..0efaccf 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -79,27 +79,15 @@
 <!-- Hotseat -->
     <bool name="hotseat_transpose_layout_with_orientation">true</bool>
 
-    <!-- Name of a subclass of com.android.launcher3.AppFilter used to
-         filter the activities shown in the launcher. Can be empty. -->
+    <!-- Various classes overriden by projects/build flavors. -->
     <string name="app_filter_class" translatable="false"></string>
-
-    <!-- Name of an icon provider class. -->
     <string name="icon_provider_class" translatable="false"></string>
-
-    <!-- Name of a drawable factory class. -->
     <string name="drawable_factory_class" translatable="false"></string>
-
-    <!-- Name of a user event dispatcher class. -->
     <string name="user_event_dispatcher_class" translatable="false"></string>
-
-    <!-- Name of an app transition manager class. -->
     <string name="app_transition_manager_class" translatable="false"></string>
-
-    <!-- Name of a subclass of com.android.launcher3.util.InstantAppResolver. Can be empty. -->
     <string name="instant_app_resolver_class" translatable="false"></string>
-
-    <!-- Name of a main process initializer class. -->
     <string name="main_process_initializer_class" translatable="false"></string>
+    <string name="system_shortcut_factory_class" translatable="false"></string>
 
     <!-- Package name of the default wallpaper picker. -->
     <string name="wallpaper_picker_package" translatable="false"></string>
@@ -113,9 +101,6 @@
     <!-- View ID used by cell layout to jail its content -->
     <item type="id" name="cell_layout_jail_id" />
 
-    <!-- Tag id used for view scrim -->
-    <item type="id" name="view_scrim" />
-
     <!-- View IDs to store item highlight information -->
     <item type="id" name="view_unhighlight_background" />
     <item type="id" name="view_highlighted" />
diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 4fe6099..4575132 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -91,6 +91,11 @@
     public static final int TYPE_ACCESSIBLE = TYPE_ALL
             & ~TYPE_DISCOVERY_BOUNCE & ~TYPE_QUICKSTEP_PREVIEW;
 
+    // These view all have particular operation associated with swipe down interaction.
+    public static final int TYPE_STATUS_BAR_SWIPE_DOWN_DISALLOW = TYPE_WIDGETS_BOTTOM_SHEET |
+            TYPE_WIDGETS_FULL_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_ON_BOARD_POPUP |
+            TYPE_DISCOVERY_BOUNCE | TYPE_TASK_MENU ;
+
     protected boolean mIsOpen;
 
     public AbstractFloatingView(Context context, AttributeSet attrs) {
diff --git a/src/com/android/launcher3/AllAppsList.java b/src/com/android/launcher3/AllAppsList.java
index 3d60605..733f295 100644
--- a/src/com/android/launcher3/AllAppsList.java
+++ b/src/com/android/launcher3/AllAppsList.java
@@ -26,6 +26,7 @@
 
 import com.android.launcher3.compat.LauncherAppsCompat;
 import com.android.launcher3.compat.PackageInstallerCompat;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.util.FlagOp;
 import com.android.launcher3.util.ItemInfoMatcher;
 
diff --git a/src/com/android/launcher3/AppWidgetResizeFrame.java b/src/com/android/launcher3/AppWidgetResizeFrame.java
index 0f5317b..8e2ffe9 100644
--- a/src/com/android/launcher3/AppWidgetResizeFrame.java
+++ b/src/com/android/launcher3/AppWidgetResizeFrame.java
@@ -1,5 +1,10 @@
 package com.android.launcher3;
 
+import static com.android.launcher3.LauncherAnimUtils.LAYOUT_HEIGHT;
+import static com.android.launcher3.LauncherAnimUtils.LAYOUT_WIDTH;
+import static com.android.launcher3.views.BaseDragLayer.LAYOUT_X;
+import static com.android.launcher3.views.BaseDragLayer.LAYOUT_Y;
+
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
@@ -429,10 +434,10 @@
             requestLayout();
         } else {
             ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(lp,
-                    PropertyValuesHolder.ofInt("width", lp.width, newWidth),
-                    PropertyValuesHolder.ofInt("height", lp.height, newHeight),
-                    PropertyValuesHolder.ofInt("x", lp.x, newX),
-                    PropertyValuesHolder.ofInt("y", lp.y, newY));
+                    PropertyValuesHolder.ofInt(LAYOUT_WIDTH, lp.width, newWidth),
+                    PropertyValuesHolder.ofInt(LAYOUT_HEIGHT, lp.height, newHeight),
+                    PropertyValuesHolder.ofInt(LAYOUT_X, lp.x, newX),
+                    PropertyValuesHolder.ofInt(LAYOUT_Y, lp.y, newY));
             mFirstFrameAnimatorHelper.addTo(oa).addUpdateListener(a -> requestLayout());
 
             AnimatorSet set = new AnimatorSet();
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index 5d40143..8e6703c 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -40,8 +40,8 @@
 import android.view.ViewDebug;
 import android.widget.TextView;
 
-import com.android.launcher3.IconCache.IconLoadRequest;
-import com.android.launcher3.IconCache.ItemInfoUpdateReceiver;
+import com.android.launcher3.icons.IconCache.IconLoadRequest;
+import com.android.launcher3.icons.IconCache.ItemInfoUpdateReceiver;
 import com.android.launcher3.Launcher.OnResumeCallback;
 import com.android.launcher3.badge.BadgeInfo;
 import com.android.launcher3.badge.BadgeRenderer;
diff --git a/src/com/android/launcher3/ButtonDropTarget.java b/src/com/android/launcher3/ButtonDropTarget.java
index dd63ebc..2b0da43 100644
--- a/src/com/android/launcher3/ButtonDropTarget.java
+++ b/src/com/android/launcher3/ButtonDropTarget.java
@@ -33,6 +33,7 @@
 import android.graphics.drawable.Drawable;
 import android.text.TextUtils;
 import android.util.AttributeSet;
+import android.util.Property;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -55,6 +56,20 @@
 public abstract class ButtonDropTarget extends TextView
         implements DropTarget, DragController.DragListener, OnClickListener {
 
+    private static final Property<ButtonDropTarget, Integer> TEXT_COLOR =
+            new Property<ButtonDropTarget, Integer>(Integer.TYPE, "textColor") {
+
+                @Override
+                public Integer get(ButtonDropTarget target) {
+                    return target.getTextColor();
+                }
+
+                @Override
+                public void set(ButtonDropTarget target, Integer value) {
+                    target.setTextColor(value);
+                }
+            };
+
     private static final int[] sTempCords = new int[2];
     private static final int DRAG_VIEW_DROP_DURATION = 285;
 
@@ -206,7 +221,7 @@
         });
 
         mCurrentColorAnim.play(anim1);
-        mCurrentColorAnim.play(ObjectAnimator.ofArgb(this, "textColor", targetColor));
+        mCurrentColorAnim.play(ObjectAnimator.ofArgb(this, TEXT_COLOR, targetColor));
         mCurrentColorAnim.start();
     }
 
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index f6f1496..a42238e 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -2678,38 +2678,6 @@
         public String toString() {
             return "(" + this.cellX + ", " + this.cellY + ")";
         }
-
-        public void setWidth(int width) {
-            this.width = width;
-        }
-
-        public int getWidth() {
-            return width;
-        }
-
-        public void setHeight(int height) {
-            this.height = height;
-        }
-
-        public int getHeight() {
-            return height;
-        }
-
-        public void setX(int x) {
-            this.x = x;
-        }
-
-        public int getX() {
-            return x;
-        }
-
-        public void setY(int y) {
-            this.y = y;
-        }
-
-        public int getY() {
-            return y;
-        }
     }
 
     // This class stores info for two purposes:
diff --git a/src/com/android/launcher3/InsettableFrameLayout.java b/src/com/android/launcher3/InsettableFrameLayout.java
index 1db1fc0..faa18b8 100644
--- a/src/com/android/launcher3/InsettableFrameLayout.java
+++ b/src/com/android/launcher3/InsettableFrameLayout.java
@@ -68,7 +68,7 @@
     }
 
     public static class LayoutParams extends FrameLayout.LayoutParams {
-        boolean ignoreInsets = false;
+        public boolean ignoreInsets = false;
 
         public LayoutParams(Context c, AttributeSet attrs) {
             super(c, attrs);
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 55074f8..bbe5b78 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -87,6 +87,7 @@
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.folder.FolderIconPreviewVerifier;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.keyboard.CustomActionsPopup;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.logging.FileLog;
@@ -867,17 +868,6 @@
         }
     }
 
-    public boolean hasSettings() {
-        if (mLauncherCallbacks != null) {
-            return mLauncherCallbacks.hasSettings();
-        } else {
-            // On O and above we there is always some setting present settings (add icon to
-            // home screen or icon badging). On earlier APIs we will have the allow rotation
-            // setting, on devices with a locked orientation,
-            return Utilities.ATLEAST_OREO || !getResources().getBoolean(R.bool.allow_rotation);
-        }
-    }
-
     public boolean isInState(LauncherState state) {
         return mStateManager.getState() == state;
     }
diff --git a/src/com/android/launcher3/LauncherAnimUtils.java b/src/com/android/launcher3/LauncherAnimUtils.java
index ac07e88..aad3449 100644
--- a/src/com/android/launcher3/LauncherAnimUtils.java
+++ b/src/com/android/launcher3/LauncherAnimUtils.java
@@ -19,6 +19,7 @@
 import android.graphics.drawable.Drawable;
 import android.util.Property;
 import android.view.View;
+import android.view.ViewGroup.LayoutParams;
 
 public class LauncherAnimUtils {
     /**
@@ -64,4 +65,30 @@
     public static int blockedFlingDurationFactor(float velocity) {
         return (int) Utilities.boundToRange(Math.abs(velocity) / 2, 2f, 6f);
     }
+
+    public static final Property<LayoutParams, Integer> LAYOUT_WIDTH =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "width") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.width;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer width) {
+                    lp.width = width;
+                }
+            };
+
+    public static final Property<LayoutParams, Integer> LAYOUT_HEIGHT =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "height") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.height;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer height) {
+                    lp.height = height;
+                }
+            };
 }
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 5159de1..b02182c 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -29,6 +29,7 @@
 import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.notification.NotificationListener;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.Preconditions;
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 7a90a55..df1c693 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -39,6 +39,7 @@
 import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.graphics.LauncherIcons;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.model.AddWorkspaceItemsTask;
 import com.android.launcher3.model.BaseModelUpdateTask;
 import com.android.launcher3.model.BgDataModel;
diff --git a/src/com/android/launcher3/SettingsActivity.java b/src/com/android/launcher3/SettingsActivity.java
index 8589b7e..1f80226 100644
--- a/src/com/android/launcher3/SettingsActivity.java
+++ b/src/com/android/launcher3/SettingsActivity.java
@@ -88,6 +88,11 @@
     @Override
     public boolean onPreferenceStartFragment(
             PreferenceFragment preferenceFragment, Preference pref) {
+        if (getFragmentManager().isStateSaved()) {
+            // Sometimes onClick can come after onPause because of being posted on the handler.
+            // Skip starting new fragments in that case.
+            return false;
+        }
         Fragment f = Fragment.instantiate(this, pref.getFragment(), pref.getExtras());
         if (f instanceof DialogFragment) {
             ((DialogFragment) f).show(getFragmentManager(), pref.getKey());
@@ -241,8 +246,7 @@
      * Content observer which listens for system badging setting changes,
      * and updates the launcher badging setting subtext accordingly.
      */
-    private static class IconBadgingObserver extends SettingsObserver.Secure
-            implements Preference.OnPreferenceClickListener {
+    private static class IconBadgingObserver extends SettingsObserver.Secure {
 
         private final ButtonPreference mBadgingPref;
         private final ContentResolver mResolver;
@@ -275,16 +279,11 @@
                 }
             }
             mBadgingPref.setWidgetFrameVisible(!serviceEnabled);
-            mBadgingPref.setOnPreferenceClickListener(serviceEnabled ? null : this);
+            mBadgingPref.setFragment(
+                    serviceEnabled ? null : NotificationAccessConfirmation.class.getName());
             mBadgingPref.setSummary(summary);
 
         }
-
-        @Override
-        public boolean onPreferenceClick(Preference preference) {
-            new NotificationAccessConfirmation().show(mFragmentManager, "notification_access");
-            return true;
-        }
     }
 
     public static class NotificationAccessConfirmation
diff --git a/src/com/android/launcher3/ShortcutInfo.java b/src/com/android/launcher3/ShortcutInfo.java
index a84bfd5..7717d91 100644
--- a/src/com/android/launcher3/ShortcutInfo.java
+++ b/src/com/android/launcher3/ShortcutInfo.java
@@ -25,6 +25,7 @@
 
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.shortcuts.ShortcutInfoCompat;
 import com.android.launcher3.util.ContentWriter;
 
diff --git a/src/com/android/launcher3/WidgetPreviewLoader.java b/src/com/android/launcher3/WidgetPreviewLoader.java
index 84bad08..cf497fd 100644
--- a/src/com/android/launcher3/WidgetPreviewLoader.java
+++ b/src/com/android/launcher3/WidgetPreviewLoader.java
@@ -33,6 +33,7 @@
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.graphics.LauncherIcons;
 import com.android.launcher3.graphics.ShadowGenerator;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.PackageUserKey;
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 353916f..b5a770f 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -671,9 +671,6 @@
     private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete,
             final boolean stripEmptyScreens) {
         // XXX: Do we need to update LM workspace screens below?
-        PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f);
-        PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f);
-
         final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
 
         mRemoveEmptyScreenRunnable = new Runnable() {
@@ -692,7 +689,7 @@
             }
         };
 
-        ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha);
+        ObjectAnimator oa = ObjectAnimator.ofFloat(cl, ALPHA, 0f);
         oa.setDuration(duration);
         oa.setStartDelay(delay);
         oa.addListener(new AnimatorListenerAdapter() {
diff --git a/src/com/android/launcher3/compat/PackageInstallerCompatVL.java b/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
index dd17916..fe7b4e5 100644
--- a/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
+++ b/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
@@ -27,7 +27,7 @@
 import android.text.TextUtils;
 import android.util.SparseArray;
 
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel;
 import com.android.launcher3.config.FeatureFlags;
diff --git a/src/com/android/launcher3/compat/ShortcutConfigActivityInfo.java b/src/com/android/launcher3/compat/ShortcutConfigActivityInfo.java
index 31c0087..d260e24 100644
--- a/src/com/android/launcher3/compat/ShortcutConfigActivityInfo.java
+++ b/src/com/android/launcher3/compat/ShortcutConfigActivityInfo.java
@@ -32,7 +32,7 @@
 import android.util.Log;
 import android.widget.Toast;
 
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutInfo;
diff --git a/src/com/android/launcher3/config/BaseFlags.java b/src/com/android/launcher3/config/BaseFlags.java
index 05fc33f..b67d35b 100644
--- a/src/com/android/launcher3/config/BaseFlags.java
+++ b/src/com/android/launcher3/config/BaseFlags.java
@@ -36,6 +36,10 @@
 
     // Feature flag to enable moving the QSB on the 0th screen of the workspace.
     public static final boolean QSB_ON_FIRST_SCREEN = true;
+
+    //Feature flag to enable pulling down navigation shade from workspace.
+    public static final boolean PULL_DOWN_STATUS_BAR = true;
+
     // When enabled the all-apps icon is not added to the hotseat.
     public static final boolean NO_ALL_APPS_ICON = true;
 
diff --git a/src/com/android/launcher3/dragndrop/DragLayer.java b/src/com/android/launcher3/dragndrop/DragLayer.java
index 6d2d3cb..f005ce7 100644
--- a/src/com/android/launcher3/dragndrop/DragLayer.java
+++ b/src/com/android/launcher3/dragndrop/DragLayer.java
@@ -47,7 +47,6 @@
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderIcon;
-import com.android.launcher3.graphics.ViewScrim;
 import com.android.launcher3.graphics.WorkspaceAndHotseatScrim;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.uioverrides.UiFactory;
@@ -125,15 +124,6 @@
     }
 
     @Override
-    protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
-        ViewScrim scrim = ViewScrim.get(child);
-        if (scrim != null) {
-            scrim.draw(canvas, getWidth(), getHeight());
-        }
-        return super.drawChild(canvas, child, drawingTime);
-    }
-
-    @Override
     protected boolean findActiveController(MotionEvent ev) {
         if (mActivity.getStateManager().getState().disableInteraction) {
             // You Shall Not Pass!!!
diff --git a/src/com/android/launcher3/dragndrop/PinShortcutRequestActivityInfo.java b/src/com/android/launcher3/dragndrop/PinShortcutRequestActivityInfo.java
index 52167bb..bd919bc 100644
--- a/src/com/android/launcher3/dragndrop/PinShortcutRequestActivityInfo.java
+++ b/src/com/android/launcher3/dragndrop/PinShortcutRequestActivityInfo.java
@@ -28,7 +28,7 @@
 import android.os.Process;
 
 import com.android.launcher3.FastBitmapDrawable;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.LauncherAnimUtils;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherSettings;
diff --git a/src/com/android/launcher3/graphics/ColorScrim.java b/src/com/android/launcher3/graphics/ColorScrim.java
deleted file mode 100644
index 5c1081a..0000000
--- a/src/com/android/launcher3/graphics/ColorScrim.java
+++ /dev/null
@@ -1,65 +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.graphics;
-
-import android.graphics.Canvas;
-import android.graphics.Color;
-import android.view.View;
-import android.view.animation.Interpolator;
-
-import com.android.launcher3.R;
-import com.android.launcher3.anim.Interpolators;
-import com.android.launcher3.uioverrides.WallpaperColorInfo;
-
-import androidx.core.graphics.ColorUtils;
-
-/**
- * Simple scrim which draws a color
- */
-public class ColorScrim extends ViewScrim {
-
-    private final int mColor;
-    private final Interpolator mInterpolator;
-    private int mCurrentColor;
-
-    public ColorScrim(View view, int color, Interpolator interpolator) {
-        super(view);
-        mColor = color;
-        mInterpolator = interpolator;
-    }
-
-    @Override
-    protected void onProgressChanged() {
-        mCurrentColor = ColorUtils.setAlphaComponent(mColor,
-                Math.round(mInterpolator.getInterpolation(mProgress) * Color.alpha(mColor)));
-    }
-
-    @Override
-    public void draw(Canvas canvas, int width, int height) {
-        if (mProgress > 0) {
-            canvas.drawColor(mCurrentColor);
-        }
-    }
-
-    public static ColorScrim createExtractedColorScrim(View view) {
-        WallpaperColorInfo colors = WallpaperColorInfo.getInstance(view.getContext());
-        int alpha = view.getResources().getInteger(R.integer.extracted_color_gradient_alpha);
-        ColorScrim scrim = new ColorScrim(view, ColorUtils.setAlphaComponent(
-                colors.getSecondaryColor(), alpha), Interpolators.LINEAR);
-        scrim.attach();
-        return scrim;
-    }
-}
diff --git a/src/com/android/launcher3/graphics/LauncherIcons.java b/src/com/android/launcher3/graphics/LauncherIcons.java
index 087362c..7db67c9 100644
--- a/src/com/android/launcher3/graphics/LauncherIcons.java
+++ b/src/com/android/launcher3/graphics/LauncherIcons.java
@@ -44,7 +44,7 @@
 
 import com.android.launcher3.AppInfo;
 import com.android.launcher3.FastBitmapDrawable;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.ItemInfoWithIcon;
 import com.android.launcher3.LauncherAppState;
diff --git a/src/com/android/launcher3/graphics/ViewScrim.java b/src/com/android/launcher3/graphics/ViewScrim.java
deleted file mode 100644
index e1727e0..0000000
--- a/src/com/android/launcher3/graphics/ViewScrim.java
+++ /dev/null
@@ -1,77 +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.graphics;
-
-import android.graphics.Canvas;
-import android.util.Property;
-import android.view.View;
-import android.view.ViewParent;
-
-import com.android.launcher3.R;
-
-/**
- * A utility class that can be used to draw a scrim behind a view
- */
-public abstract class ViewScrim<T extends View> {
-
-    public static Property<ViewScrim, Float> PROGRESS =
-            new Property<ViewScrim, Float>(Float.TYPE, "progress") {
-                @Override
-                public Float get(ViewScrim viewScrim) {
-                    return viewScrim.mProgress;
-                }
-
-                @Override
-                public void set(ViewScrim object, Float value) {
-                    object.setProgress(value);
-                }
-            };
-
-    protected final T mView;
-    protected float mProgress = 0;
-
-    public ViewScrim(T view) {
-        mView = view;
-    }
-
-    public void attach() {
-        mView.setTag(R.id.view_scrim, this);
-    }
-
-    public void setProgress(float progress) {
-        if (mProgress != progress) {
-            mProgress = progress;
-            onProgressChanged();
-            invalidate();
-        }
-    }
-
-    public abstract void draw(Canvas canvas, int width, int height);
-
-    protected void onProgressChanged() { }
-
-    public void invalidate() {
-        ViewParent parent = mView.getParent();
-        if (parent != null) {
-            ((View) parent).invalidate();
-        }
-    }
-
-    public static ViewScrim get(View view) {
-        return (ViewScrim) view.getTag(R.id.view_scrim);
-    }
-}
diff --git a/src/com/android/launcher3/IconCache.java b/src/com/android/launcher3/icons/IconCache.java
similarity index 74%
rename from src/com/android/launcher3/IconCache.java
rename to src/com/android/launcher3/icons/IconCache.java
index 61fb3e3..2035d0e 100644
--- a/src/com/android/launcher3/IconCache.java
+++ b/src/com/android/launcher3/icons/IconCache.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.launcher3;
+package com.android.launcher3.icons;
 
 import static com.android.launcher3.graphics.BitmapInfo.LOW_RES_ICON;
 
@@ -38,11 +38,19 @@
 import android.os.Build.VERSION;
 import android.os.Handler;
 import android.os.Process;
-import android.os.SystemClock;
 import android.os.UserHandle;
 import android.text.TextUtils;
 import android.util.Log;
 
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.IconProvider;
+import com.android.launcher3.InvariantDeviceProfile;
+import com.android.launcher3.ItemInfoWithIcon;
+import com.android.launcher3.LauncherFiles;
+import com.android.launcher3.LauncherModel;
+import com.android.launcher3.MainThreadExecutor;
+import com.android.launcher3.ShortcutInfo;
+import com.android.launcher3.Utilities;
 import com.android.launcher3.compat.LauncherAppsCompat;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.graphics.BitmapInfo;
@@ -54,14 +62,9 @@
 import com.android.launcher3.util.Preconditions;
 import com.android.launcher3.util.Provider;
 import com.android.launcher3.util.SQLiteCacheHelper;
-import com.android.launcher3.util.Thunk;
 
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-import java.util.Stack;
 
 import androidx.annotation.NonNull;
 import androidx.core.graphics.ColorUtils;
@@ -81,8 +84,6 @@
     private static final boolean DEBUG = false;
     private static final boolean DEBUG_IGNORE_CACHE = false;
 
-    @Thunk static final Object ICON_UPDATE_TOKEN = new Object();
-
     public static class CacheEntry extends BitmapInfo {
         public CharSequence title = "";
         public CharSequence contentDescription = "";
@@ -93,20 +94,21 @@
     }
 
     private final HashMap<UserHandle, BitmapInfo> mDefaultIcons = new HashMap<>();
-    @Thunk final MainThreadExecutor mMainThreadExecutor = new MainThreadExecutor();
 
-    private final Context mContext;
-    private final PackageManager mPackageManager;
-    private final IconProvider mIconProvider;
-    @Thunk final UserManagerCompat mUserManager;
-    private final LauncherAppsCompat mLauncherApps;
+    final MainThreadExecutor mMainThreadExecutor = new MainThreadExecutor();
+    final Context mContext;
+    final PackageManager mPackageManager;
+    final IconProvider mIconProvider;
+    final UserManagerCompat mUserManager;
+    final LauncherAppsCompat mLauncherApps;
+
     private final HashMap<ComponentKey, CacheEntry> mCache =
             new HashMap<>(INITIAL_ICON_CACHE_CAPACITY);
     private final InstantAppResolver mInstantAppResolver;
     private final int mIconDpi;
-    @Thunk final IconDB mIconDb;
 
-    @Thunk final Handler mWorkerHandler;
+    final IconDB mIconDb;
+    final Handler mWorkerHandler;
 
     private final BitmapFactory.Options mDecodeOptions;
 
@@ -247,115 +249,9 @@
                 new String[]{packageName + "/%", Long.toString(userSerial)});
     }
 
-    public void updateDbIcons(Set<String> ignorePackagesForMainUser) {
-        // Remove all active icon update tasks.
-        mWorkerHandler.removeCallbacksAndMessages(ICON_UPDATE_TOKEN);
-
+    public IconCacheUpdateHandler getUpdateHandler() {
         mIconProvider.updateSystemStateString(mContext);
-        for (UserHandle user : mUserManager.getUserProfiles()) {
-            // Query for the set of apps
-            final List<LauncherActivityInfo> apps = mLauncherApps.getActivityList(null, user);
-            // Fail if we don't have any apps
-            // TODO: Fix this. Only fail for the current user.
-            if (apps == null || apps.isEmpty()) {
-                return;
-            }
-
-            // Update icon cache. This happens in segments and {@link #onPackageIconsUpdated}
-            // is called by the icon cache when the job is complete.
-            updateDBIcons(user, apps, Process.myUserHandle().equals(user)
-                    ? ignorePackagesForMainUser : Collections.<String>emptySet());
-        }
-    }
-
-    /**
-     * Updates the persistent DB, such that only entries corresponding to {@param apps} remain in
-     * the DB and are updated.
-     * @return The set of packages for which icons have updated.
-     */
-    private void updateDBIcons(UserHandle user, List<LauncherActivityInfo> apps,
-            Set<String> ignorePackages) {
-        long userSerial = mUserManager.getSerialNumberForUser(user);
-        PackageManager pm = mContext.getPackageManager();
-        HashMap<String, PackageInfo> pkgInfoMap = new HashMap<>();
-        for (PackageInfo info : pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES)) {
-            pkgInfoMap.put(info.packageName, info);
-        }
-
-        HashMap<ComponentName, LauncherActivityInfo> componentMap = new HashMap<>();
-        for (LauncherActivityInfo app : apps) {
-            componentMap.put(app.getComponentName(), app);
-        }
-
-        HashSet<Integer> itemsToRemove = new HashSet<>();
-        Stack<LauncherActivityInfo> appsToUpdate = new Stack<>();
-
-        Cursor c = null;
-        try {
-            c = mIconDb.query(
-                    new String[]{IconDB.COLUMN_ROWID, IconDB.COLUMN_COMPONENT,
-                            IconDB.COLUMN_LAST_UPDATED, IconDB.COLUMN_VERSION,
-                            IconDB.COLUMN_SYSTEM_STATE},
-                    IconDB.COLUMN_USER + " = ? ",
-                    new String[]{Long.toString(userSerial)});
-
-            final int indexComponent = c.getColumnIndex(IconDB.COLUMN_COMPONENT);
-            final int indexLastUpdate = c.getColumnIndex(IconDB.COLUMN_LAST_UPDATED);
-            final int indexVersion = c.getColumnIndex(IconDB.COLUMN_VERSION);
-            final int rowIndex = c.getColumnIndex(IconDB.COLUMN_ROWID);
-            final int systemStateIndex = c.getColumnIndex(IconDB.COLUMN_SYSTEM_STATE);
-
-            while (c.moveToNext()) {
-                String cn = c.getString(indexComponent);
-                ComponentName component = ComponentName.unflattenFromString(cn);
-                PackageInfo info = pkgInfoMap.get(component.getPackageName());
-                if (info == null) {
-                    if (!ignorePackages.contains(component.getPackageName())) {
-                        remove(component, user);
-                        itemsToRemove.add(c.getInt(rowIndex));
-                    }
-                    continue;
-                }
-                if ((info.applicationInfo.flags & ApplicationInfo.FLAG_IS_DATA_ONLY) != 0) {
-                    // Application is not present
-                    continue;
-                }
-
-                long updateTime = c.getLong(indexLastUpdate);
-                int version = c.getInt(indexVersion);
-                LauncherActivityInfo app = componentMap.remove(component);
-                if (version == info.versionCode && updateTime == info.lastUpdateTime &&
-                        TextUtils.equals(c.getString(systemStateIndex),
-                                mIconProvider.getIconSystemState(info.packageName))) {
-                    continue;
-                }
-                if (app == null) {
-                    remove(component, user);
-                    itemsToRemove.add(c.getInt(rowIndex));
-                } else {
-                    appsToUpdate.add(app);
-                }
-            }
-        } catch (SQLiteException e) {
-            Log.d(TAG, "Error reading icon cache", e);
-            // Continue updating whatever we have read so far
-        } finally {
-            if (c != null) {
-                c.close();
-            }
-        }
-        if (!itemsToRemove.isEmpty()) {
-            mIconDb.delete(
-                    Utilities.createDbSelectionQuery(IconDB.COLUMN_ROWID, itemsToRemove), null);
-        }
-
-        // Insert remaining apps.
-        if (!componentMap.isEmpty() || !appsToUpdate.isEmpty()) {
-            Stack<LauncherActivityInfo> appsToAdd = new Stack<>();
-            appsToAdd.addAll(componentMap.values());
-            new SerializedIconUpdateTask(userSerial, pkgInfoMap,
-                    appsToAdd, appsToUpdate).scheduleNext();
-        }
+        return new IconCacheUpdateHandler(this);
     }
 
     /**
@@ -363,8 +259,9 @@
      * @param replaceExisting if true, it will recreate the bitmap even if it already exists in
      *                        the memory. This is useful then the previous bitmap was created using
      *                        old data.
+     * package private
      */
-    @Thunk synchronized void addIconToDBAndMemCache(LauncherActivityInfo app,
+    synchronized void addIconToDBAndMemCache(LauncherActivityInfo app,
             PackageInfo info, long userSerial, boolean replaceExisting) {
         final ComponentKey key = new ComponentKey(app.getComponentName(), app.getUser());
         CacheEntry entry = null;
@@ -744,81 +641,23 @@
         }
     }
 
-    /**
-     * A runnable that updates invalid icons and adds missing icons in the DB for the provided
-     * LauncherActivityInfo list. Items are updated/added one at a time, so that the
-     * worker thread doesn't get blocked.
-     */
-    @Thunk class SerializedIconUpdateTask implements Runnable {
-        private final long mUserSerial;
-        private final HashMap<String, PackageInfo> mPkgInfoMap;
-        private final Stack<LauncherActivityInfo> mAppsToAdd;
-        private final Stack<LauncherActivityInfo> mAppsToUpdate;
-        private final HashSet<String> mUpdatedPackages = new HashSet<>();
-
-        @Thunk SerializedIconUpdateTask(long userSerial, HashMap<String, PackageInfo> pkgInfoMap,
-                Stack<LauncherActivityInfo> appsToAdd,
-                Stack<LauncherActivityInfo> appsToUpdate) {
-            mUserSerial = userSerial;
-            mPkgInfoMap = pkgInfoMap;
-            mAppsToAdd = appsToAdd;
-            mAppsToUpdate = appsToUpdate;
-        }
-
-        @Override
-        public void run() {
-            if (!mAppsToUpdate.isEmpty()) {
-                LauncherActivityInfo app = mAppsToUpdate.pop();
-                String pkg = app.getComponentName().getPackageName();
-                PackageInfo info = mPkgInfoMap.get(pkg);
-                addIconToDBAndMemCache(app, info, mUserSerial, true /*replace existing*/);
-                mUpdatedPackages.add(pkg);
-
-                if (mAppsToUpdate.isEmpty() && !mUpdatedPackages.isEmpty()) {
-                    // No more app to update. Notify model.
-                    LauncherAppState.getInstance(mContext).getModel().onPackageIconsUpdated(
-                            mUpdatedPackages, mUserManager.getUserForSerialNumber(mUserSerial));
-                }
-
-                // Let it run one more time.
-                scheduleNext();
-            } else if (!mAppsToAdd.isEmpty()) {
-                LauncherActivityInfo app = mAppsToAdd.pop();
-                PackageInfo info = mPkgInfoMap.get(app.getComponentName().getPackageName());
-                // We do not check the mPkgInfoMap when generating the mAppsToAdd. Although every
-                // app should have package info, this is not guaranteed by the api
-                if (info != null) {
-                    addIconToDBAndMemCache(app, info, mUserSerial, false /*replace existing*/);
-                }
-
-                if (!mAppsToAdd.isEmpty()) {
-                    scheduleNext();
-                }
-            }
-        }
-
-        public void scheduleNext() {
-            mWorkerHandler.postAtTime(this, ICON_UPDATE_TOKEN, SystemClock.uptimeMillis() + 1);
-        }
-    }
-
-    private static final class IconDB extends SQLiteCacheHelper {
+    static final class IconDB extends SQLiteCacheHelper {
         private final static int RELEASE_VERSION = 25;
 
-        private final static String TABLE_NAME = "icons";
-        private final static String COLUMN_ROWID = "rowid";
-        private final static String COLUMN_COMPONENT = "componentName";
-        private final static String COLUMN_USER = "profileId";
-        private final static String COLUMN_LAST_UPDATED = "lastUpdated";
-        private final static String COLUMN_VERSION = "version";
-        private final static String COLUMN_ICON = "icon";
-        private final static String COLUMN_ICON_COLOR = "icon_color";
-        private final static String COLUMN_LABEL = "label";
-        private final static String COLUMN_SYSTEM_STATE = "system_state";
+        public final static String TABLE_NAME = "icons";
+        public final static String COLUMN_ROWID = "rowid";
+        public final static String COLUMN_COMPONENT = "componentName";
+        public final static String COLUMN_USER = "profileId";
+        public final static String COLUMN_LAST_UPDATED = "lastUpdated";
+        public final static String COLUMN_VERSION = "version";
+        public final static String COLUMN_ICON = "icon";
+        public final static String COLUMN_ICON_COLOR = "icon_color";
+        public final static String COLUMN_LABEL = "label";
+        public final static String COLUMN_SYSTEM_STATE = "system_state";
 
-        private final static String[] COLUMNS_HIGH_RES = new String[] {
+        public final static String[] COLUMNS_HIGH_RES = new String[] {
                 IconDB.COLUMN_ICON_COLOR, IconDB.COLUMN_LABEL, IconDB.COLUMN_ICON };
-        private final static String[] COLUMNS_LOW_RES = new String[] {
+        public final static String[] COLUMNS_LOW_RES = new String[] {
                 IconDB.COLUMN_ICON_COLOR, IconDB.COLUMN_LABEL };
 
         public IconDB(Context context, int iconPixelSize) {
diff --git a/src/com/android/launcher3/icons/IconCacheUpdateHandler.java b/src/com/android/launcher3/icons/IconCacheUpdateHandler.java
new file mode 100644
index 0000000..04e2901
--- /dev/null
+++ b/src/com/android/launcher3/icons/IconCacheUpdateHandler.java
@@ -0,0 +1,223 @@
+/*
+ * 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.icons;
+
+import android.content.ComponentName;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.LauncherActivityInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteException;
+import android.os.SystemClock;
+import android.os.UserHandle;
+import android.text.TextUtils;
+import android.util.Log;
+
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.icons.IconCache.IconDB;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.Stack;
+
+/**
+ * Utility class to handle updating the Icon cache
+ */
+public class IconCacheUpdateHandler {
+
+    private static final String TAG = "IconCacheUpdateHandler";
+
+    private static final Object ICON_UPDATE_TOKEN = new Object();
+
+    private final HashMap<String, PackageInfo> mPkgInfoMap;
+    private final IconCache mIconCache;
+    private final HashMap<UserHandle, Set<String>> mPackagesToIgnore = new HashMap<>();
+
+    IconCacheUpdateHandler(IconCache cache) {
+        mIconCache = cache;
+
+        mPkgInfoMap = new HashMap<>();
+
+        // Remove all active icon update tasks.
+        mIconCache.mWorkerHandler.removeCallbacksAndMessages(ICON_UPDATE_TOKEN);
+
+        createPackageInfoMap();
+    }
+
+    public void setPackagesToIgnore(UserHandle userHandle, Set<String> packages) {
+        mPackagesToIgnore.put(userHandle, packages);
+    }
+
+    private void createPackageInfoMap() {
+        PackageManager pm = mIconCache.mPackageManager;
+        HashMap<String, PackageInfo> pkgInfoMap = new HashMap<>();
+        for (PackageInfo info : pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES)) {
+            pkgInfoMap.put(info.packageName, info);
+        }
+    }
+
+    /**
+     * Updates the persistent DB, such that only entries corresponding to {@param apps} remain in
+     * the DB and are updated.
+     * @return The set of packages for which icons have updated.
+     */
+    public void updateIcons(List<LauncherActivityInfo> apps) {
+        if (apps.isEmpty()) {
+            return;
+        }
+        UserHandle user = apps.get(0).getUser();
+
+        Set<String> ignorePackages = mPackagesToIgnore.get(user);
+        if (ignorePackages == null) {
+            ignorePackages = Collections.emptySet();
+        }
+
+        long userSerial = mIconCache.mUserManager.getSerialNumberForUser(user);
+        HashMap<ComponentName, LauncherActivityInfo> componentMap = new HashMap<>();
+        for (LauncherActivityInfo app : apps) {
+            componentMap.put(app.getComponentName(), app);
+        }
+
+        HashSet<Integer> itemsToRemove = new HashSet<>();
+        Stack<LauncherActivityInfo> appsToUpdate = new Stack<>();
+
+        try (Cursor c = mIconCache.mIconDb.query(
+                new String[]{IconDB.COLUMN_ROWID, IconDB.COLUMN_COMPONENT,
+                        IconDB.COLUMN_LAST_UPDATED, IconDB.COLUMN_VERSION,
+                        IconDB.COLUMN_SYSTEM_STATE},
+                IconDB.COLUMN_USER + " = ? ",
+                new String[]{Long.toString(userSerial)})) {
+
+            final int indexComponent = c.getColumnIndex(IconDB.COLUMN_COMPONENT);
+            final int indexLastUpdate = c.getColumnIndex(IconDB.COLUMN_LAST_UPDATED);
+            final int indexVersion = c.getColumnIndex(IconDB.COLUMN_VERSION);
+            final int rowIndex = c.getColumnIndex(IconDB.COLUMN_ROWID);
+            final int systemStateIndex = c.getColumnIndex(IconDB.COLUMN_SYSTEM_STATE);
+
+            while (c.moveToNext()) {
+                String cn = c.getString(indexComponent);
+                ComponentName component = ComponentName.unflattenFromString(cn);
+                PackageInfo info = mPkgInfoMap.get(component.getPackageName());
+                if (info == null) {
+                    if (!ignorePackages.contains(component.getPackageName())) {
+                        mIconCache.remove(component, user);
+                        itemsToRemove.add(c.getInt(rowIndex));
+                    }
+                    continue;
+                }
+                if ((info.applicationInfo.flags & ApplicationInfo.FLAG_IS_DATA_ONLY) != 0) {
+                    // Application is not present
+                    continue;
+                }
+
+                long updateTime = c.getLong(indexLastUpdate);
+                int version = c.getInt(indexVersion);
+                LauncherActivityInfo app = componentMap.remove(component);
+                if (version == info.versionCode && updateTime == info.lastUpdateTime &&
+                        TextUtils.equals(c.getString(systemStateIndex),
+                                mIconCache.mIconProvider.getIconSystemState(info.packageName))) {
+                    continue;
+                }
+                if (app == null) {
+                    mIconCache.remove(component, user);
+                    itemsToRemove.add(c.getInt(rowIndex));
+                } else {
+                    appsToUpdate.add(app);
+                }
+            }
+        } catch (SQLiteException e) {
+            Log.d(TAG, "Error reading icon cache", e);
+            // Continue updating whatever we have read so far
+        }
+        if (!itemsToRemove.isEmpty()) {
+            mIconCache.mIconDb.delete(
+                    Utilities.createDbSelectionQuery(IconDB.COLUMN_ROWID, itemsToRemove), null);
+        }
+
+        // Insert remaining apps.
+        if (!componentMap.isEmpty() || !appsToUpdate.isEmpty()) {
+            Stack<LauncherActivityInfo> appsToAdd = new Stack<>();
+            appsToAdd.addAll(componentMap.values());
+            new SerializedIconUpdateTask(userSerial, user, appsToAdd, appsToUpdate).scheduleNext();
+        }
+    }
+
+
+    /**
+     * A runnable that updates invalid icons and adds missing icons in the DB for the provided
+     * LauncherActivityInfo list. Items are updated/added one at a time, so that the
+     * worker thread doesn't get blocked.
+     */
+    private class SerializedIconUpdateTask implements Runnable {
+        private final long mUserSerial;
+        private final UserHandle mUserHandle;
+        private final Stack<LauncherActivityInfo> mAppsToAdd;
+        private final Stack<LauncherActivityInfo> mAppsToUpdate;
+        private final HashSet<String> mUpdatedPackages = new HashSet<>();
+
+        SerializedIconUpdateTask(long userSerial, UserHandle userHandle,
+                Stack<LauncherActivityInfo> appsToAdd, Stack<LauncherActivityInfo> appsToUpdate) {
+            mUserHandle = userHandle;
+            mUserSerial = userSerial;
+            mAppsToAdd = appsToAdd;
+            mAppsToUpdate = appsToUpdate;
+        }
+
+        @Override
+        public void run() {
+            if (!mAppsToUpdate.isEmpty()) {
+                LauncherActivityInfo app = mAppsToUpdate.pop();
+                String pkg = app.getComponentName().getPackageName();
+                PackageInfo info = mPkgInfoMap.get(pkg);
+                mIconCache.addIconToDBAndMemCache(
+                        app, info, mUserSerial, true /*replace existing*/);
+                mUpdatedPackages.add(pkg);
+
+                if (mAppsToUpdate.isEmpty() && !mUpdatedPackages.isEmpty()) {
+                    // No more app to update. Notify model.
+                    LauncherAppState.getInstance(mIconCache.mContext).getModel()
+                            .onPackageIconsUpdated(mUpdatedPackages, mUserHandle);
+                }
+
+                // Let it run one more time.
+                scheduleNext();
+            } else if (!mAppsToAdd.isEmpty()) {
+                LauncherActivityInfo app = mAppsToAdd.pop();
+                PackageInfo info = mPkgInfoMap.get(app.getComponentName().getPackageName());
+                // We do not check the mPkgInfoMap when generating the mAppsToAdd. Although every
+                // app should have package info, this is not guaranteed by the api
+                if (info != null) {
+                    mIconCache.addIconToDBAndMemCache(
+                            app, info, mUserSerial, false /*replace existing*/);
+                }
+
+                if (!mAppsToAdd.isEmpty()) {
+                    scheduleNext();
+                }
+            }
+        }
+
+        public void scheduleNext() {
+            mIconCache.mWorkerHandler.postAtTime(this, ICON_UPDATE_TOKEN,
+                    SystemClock.uptimeMillis() + 1);
+        }
+    }
+}
diff --git a/src/com/android/launcher3/model/CacheDataUpdatedTask.java b/src/com/android/launcher3/model/CacheDataUpdatedTask.java
index 54c0542..be83d36 100644
--- a/src/com/android/launcher3/model/CacheDataUpdatedTask.java
+++ b/src/com/android/launcher3/model/CacheDataUpdatedTask.java
@@ -20,7 +20,7 @@
 
 import com.android.launcher3.AllAppsList;
 import com.android.launcher3.AppInfo;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel.CallbackTask;
diff --git a/src/com/android/launcher3/model/LoaderCursor.java b/src/com/android/launcher3/model/LoaderCursor.java
index 744e98a..77e9721 100644
--- a/src/com/android/launcher3/model/LoaderCursor.java
+++ b/src/com/android/launcher3/model/LoaderCursor.java
@@ -32,7 +32,7 @@
 import android.util.LongSparseArray;
 
 import com.android.launcher3.AppInfo;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index 8f8bc09..4ccb8d8 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -43,7 +43,8 @@
 import com.android.launcher3.AllAppsList;
 import com.android.launcher3.AppInfo;
 import com.android.launcher3.FolderInfo;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCacheUpdateHandler;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InstallShortcutReceiver;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
@@ -182,7 +183,7 @@
 
             // second step
             TraceHelper.partitionSection(TAG, "step 2.1: loading all apps");
-            loadAllApps();
+            List<List<LauncherActivityInfo>> activityListPerUser = loadAllApps();
 
             TraceHelper.partitionSection(TAG, "step 2.2: Binding all apps");
             verifyNotStopped();
@@ -190,7 +191,9 @@
 
             verifyNotStopped();
             TraceHelper.partitionSection(TAG, "step 2.3: Update icon cache");
-            updateIconCache();
+            IconCacheUpdateHandler updateHandler = mIconCache.getUpdateHandler();
+            setIgnorePackages(updateHandler);
+            updateIconCacheForApps(updateHandler, activityListPerUser);
 
             // Take a break
             TraceHelper.partitionSection(TAG, "step 2 completed, wait for idle");
@@ -774,7 +777,7 @@
         }
     }
 
-    private void updateIconCache() {
+    private void setIgnorePackages(IconCacheUpdateHandler updateHandler) {
         // Ignore packages which have a promise icon.
         HashSet<String> packagesToIgnore = new HashSet<>();
         synchronized (mBgDataModel) {
@@ -792,12 +795,20 @@
                 }
             }
         }
-        mIconCache.updateDbIcons(packagesToIgnore);
+        updateHandler.setPackagesToIgnore(Process.myUserHandle(), packagesToIgnore);
     }
 
-    private void loadAllApps() {
-        final List<UserHandle> profiles = mUserManager.getUserProfiles();
+    private void updateIconCacheForApps(IconCacheUpdateHandler updateHandler,
+            List<List<LauncherActivityInfo>> activityListPerUser) {
+        int userCount = activityListPerUser.size();
+        for (int i = 0; i < userCount; i++) {
+            updateHandler.updateIcons(activityListPerUser.get(i));
+        }
+    }
 
+    private List<List<LauncherActivityInfo>> loadAllApps() {
+        final List<UserHandle> profiles = mUserManager.getUserProfiles();
+        List<List<LauncherActivityInfo>> activityListPerUser = new ArrayList<>();
         // Clear the list of apps
         mBgAllAppsList.clear();
         for (UserHandle user : profiles) {
@@ -806,7 +817,7 @@
             // Fail if we don't have any apps
             // TODO: Fix this. Only fail for the current user.
             if (apps == null || apps.isEmpty()) {
-                return;
+                return activityListPerUser;
             }
             boolean quietMode = mUserManager.isQuietModeEnabled(user);
             // Create the ApplicationInfos
@@ -815,6 +826,7 @@
                 // This builds the icon bitmaps.
                 mBgAllAppsList.add(new AppInfo(app, user, quietMode), app);
             }
+            activityListPerUser.add(apps);
         }
 
         if (FeatureFlags.LAUNCHER3_PROMISE_APPS_IN_ALL_APPS) {
@@ -827,6 +839,7 @@
         }
 
         mBgAllAppsList.added = new ArrayList<>();
+        return activityListPerUser;
     }
 
     private void loadDeepShortcuts() {
diff --git a/src/com/android/launcher3/model/PackageUpdatedTask.java b/src/com/android/launcher3/model/PackageUpdatedTask.java
index c556083..0af5311 100644
--- a/src/com/android/launcher3/model/PackageUpdatedTask.java
+++ b/src/com/android/launcher3/model/PackageUpdatedTask.java
@@ -24,7 +24,7 @@
 
 import com.android.launcher3.AllAppsList;
 import com.android.launcher3.AppInfo;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InstallShortcutReceiver;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
diff --git a/src/com/android/launcher3/model/WidgetsModel.java b/src/com/android/launcher3/model/WidgetsModel.java
index 448ff6c..82f4fe1 100644
--- a/src/com/android/launcher3/model/WidgetsModel.java
+++ b/src/com/android/launcher3/model/WidgetsModel.java
@@ -11,7 +11,7 @@
 import android.util.Log;
 
 import com.android.launcher3.AppFilter;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
diff --git a/src/com/android/launcher3/popup/PopupContainerWithArrow.java b/src/com/android/launcher3/popup/PopupContainerWithArrow.java
index 10be925..6877cc4 100644
--- a/src/com/android/launcher3/popup/PopupContainerWithArrow.java
+++ b/src/com/android/launcher3/popup/PopupContainerWithArrow.java
@@ -184,17 +184,10 @@
             return null;
         }
 
-        PopupDataProvider popupDataProvider = launcher.getPopupDataProvider();
-        List<String> shortcutIds = popupDataProvider.getShortcutIdsForItem(itemInfo);
-        List<NotificationKeyData> notificationKeys = popupDataProvider
-                .getNotificationKeysForItem(itemInfo);
-        List<SystemShortcut> systemShortcuts = popupDataProvider
-                .getEnabledSystemShortcutsForItem(itemInfo);
-
         final PopupContainerWithArrow container =
                 (PopupContainerWithArrow) launcher.getLayoutInflater().inflate(
                         R.layout.popup_container, launcher.getDragLayer(), false);
-        container.populateAndShow(icon, shortcutIds, notificationKeys, systemShortcuts);
+        container.populateAndShow(icon, itemInfo, SystemShortcutFactory.INSTANCE.get(launcher));
         return container;
     }
 
@@ -219,6 +212,15 @@
         }
     }
 
+    protected void populateAndShow(
+            BubbleTextView icon, ItemInfo item, SystemShortcutFactory factory) {
+        PopupDataProvider popupDataProvider = mLauncher.getPopupDataProvider();
+        populateAndShow(icon,
+                popupDataProvider.getShortcutIdsForItem(item),
+                popupDataProvider.getNotificationKeysForItem(item),
+                factory.getEnabledShortcuts(mLauncher, item));
+    }
+
     @TargetApi(Build.VERSION_CODES.P)
     protected void populateAndShow(final BubbleTextView originalIcon, final List<String> shortcutIds,
             final List<NotificationKeyData> notificationKeys, List<SystemShortcut> systemShortcuts) {
diff --git a/src/com/android/launcher3/popup/PopupDataProvider.java b/src/com/android/launcher3/popup/PopupDataProvider.java
index 3faec44..4d5a9c6 100644
--- a/src/com/android/launcher3/popup/PopupDataProvider.java
+++ b/src/com/android/launcher3/popup/PopupDataProvider.java
@@ -50,13 +50,6 @@
     private static final boolean LOGD = false;
     private static final String TAG = "PopupDataProvider";
 
-    /** Note that these are in order of priority. */
-    private static final SystemShortcut[] SYSTEM_SHORTCUTS = new SystemShortcut[] {
-            new SystemShortcut.AppInfo(),
-            new SystemShortcut.Widgets(),
-            new SystemShortcut.Install()
-    };
-
     private final Launcher mLauncher;
 
     /** Maps launcher activity components to their list of shortcut ids. */
@@ -192,16 +185,6 @@
                 : notificationListener.getNotificationsForKeys(notificationKeys);
     }
 
-    public @NonNull List<SystemShortcut> getEnabledSystemShortcutsForItem(ItemInfo info) {
-        List<SystemShortcut> systemShortcuts = new ArrayList<>();
-        for (SystemShortcut systemShortcut : SYSTEM_SHORTCUTS) {
-            if (systemShortcut.getOnClickListener(mLauncher, info) != null) {
-                systemShortcuts.add(systemShortcut);
-            }
-        }
-        return systemShortcuts;
-    }
-
     public void cancelNotification(String notificationKey) {
         NotificationListener notificationListener = NotificationListener.getInstanceIfConnected();
         if (notificationListener == null) {
diff --git a/src/com/android/launcher3/popup/SystemShortcutFactory.java b/src/com/android/launcher3/popup/SystemShortcutFactory.java
new file mode 100644
index 0000000..516fafa
--- /dev/null
+++ b/src/com/android/launcher3/popup/SystemShortcutFactory.java
@@ -0,0 +1,57 @@
+/*
+ * 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.popup;
+
+import com.android.launcher3.ItemInfo;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
+import com.android.launcher3.util.MainThreadInitializedObject;
+import com.android.launcher3.util.ResourceBasedOverride;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+
+public class SystemShortcutFactory implements ResourceBasedOverride {
+
+    public static final MainThreadInitializedObject<SystemShortcutFactory> INSTANCE =
+            new MainThreadInitializedObject<>(c -> Overrides.getObject(
+                    SystemShortcutFactory.class, c, R.string.system_shortcut_factory_class));
+
+    /** Note that these are in order of priority. */
+    private final SystemShortcut[] mAllShortcuts;
+
+    @SuppressWarnings("unused")
+    public SystemShortcutFactory() {
+        this(new SystemShortcut.AppInfo(),
+                new SystemShortcut.Widgets(), new SystemShortcut.Install());
+    }
+
+    protected SystemShortcutFactory(SystemShortcut... shortcuts) {
+        mAllShortcuts = shortcuts;
+    }
+
+    public @NonNull List<SystemShortcut> getEnabledShortcuts(Launcher launcher, ItemInfo info) {
+        List<SystemShortcut> systemShortcuts = new ArrayList<>();
+        for (SystemShortcut systemShortcut : mAllShortcuts) {
+            if (systemShortcut.getOnClickListener(launcher, info) != null) {
+                systemShortcuts.add(systemShortcut);
+            }
+        }
+        return systemShortcuts;
+    }
+}
diff --git a/src/com/android/launcher3/states/RotationHelper.java b/src/com/android/launcher3/states/RotationHelper.java
index e866445..9c4a4ea 100644
--- a/src/com/android/launcher3/states/RotationHelper.java
+++ b/src/com/android/launcher3/states/RotationHelper.java
@@ -56,7 +56,7 @@
     private final Activity mActivity;
     private final SharedPreferences mPrefs;
 
-    private final boolean mIgnoreAutoRotateSettings;
+    private boolean mIgnoreAutoRotateSettings;
     private boolean mAutoRotateEnabled;
 
     /**
@@ -110,6 +110,13 @@
         }
     }
 
+    // Used by tests only.
+    public void forceAllowRotationForTesting(boolean allowRotation) {
+        mIgnoreAutoRotateSettings =
+                allowRotation || mActivity.getResources().getBoolean(R.bool.allow_rotation);
+        notifyChange();
+    }
+
     public void initialize() {
         if (!mInitialized) {
             mInitialized = true;
diff --git a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
index fd9157e..7b09bcc 100644
--- a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
+++ b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 The Android Open Source Project
+ * 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.
diff --git a/src/com/android/launcher3/touch/TouchEventTranslator.java b/src/com/android/launcher3/touch/TouchEventTranslator.java
new file mode 100644
index 0000000..8a5c932
--- /dev/null
+++ b/src/com/android/launcher3/touch/TouchEventTranslator.java
@@ -0,0 +1,274 @@
+/*
+ * 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.touch;
+
+import android.graphics.PointF;
+import android.util.Log;
+import android.util.Pair;
+import android.util.SparseArray;
+import android.util.SparseLongArray;
+import android.view.MotionEvent;
+import android.view.MotionEvent.PointerCoords;
+import android.view.MotionEvent.PointerProperties;
+
+import com.android.launcher3.Utilities.Consumer;
+
+/**
+ * To minimize the size of the MotionEvent, historic events are not copied and passed via the
+ * listener.
+ */
+public class TouchEventTranslator {
+
+    private static final String TAG = "TouchEventTranslator";
+    private static final boolean DEBUG = false;
+
+    private class DownState {
+        long timeStamp;
+        float downY;
+        public DownState(long timeStamp, float downY) {
+            this.timeStamp = timeStamp;
+            this.downY = downY;
+        }
+    };
+    private final DownState ZERO = new DownState(0, 0f);
+
+    private final Consumer<MotionEvent> mListener;
+
+    private final SparseArray<DownState> mDownEvents;
+    private final SparseArray<PointF> mFingers;
+
+    private final SparseArray<Pair<PointerProperties[], PointerCoords[]>> mCache;
+
+    public TouchEventTranslator(Consumer<MotionEvent> listener) {
+        mDownEvents = new SparseArray<>();
+        mFingers = new SparseArray<>();
+        mCache = new SparseArray<>();
+
+        mListener = listener;
+    }
+
+    public void reset() {
+        mDownEvents.clear();
+        mFingers.clear();
+    }
+
+    public float getDownY() {
+        return mDownEvents.get(0).downY;
+    }
+
+    public void setDownParameters(int idx, MotionEvent e) {
+        DownState ev = new DownState(e.getEventTime(), e.getY(idx));
+        mDownEvents.append(idx, ev);
+    }
+
+    public void dispatchDownEvents(MotionEvent ev) {
+        for(int i = 0; i < ev.getPointerCount() && i < mDownEvents.size(); i++) {
+            int pid = ev.getPointerId(i);
+            put(pid, ev.getX(i), 0, mDownEvents.get(i).timeStamp, ev);
+        }
+    }
+
+    public void processMotionEvent(MotionEvent ev) {
+        if (DEBUG) {
+            printSamples(TAG + " processMotionEvent", ev);
+        }
+        int index = ev.getActionIndex();
+        float x = ev.getX(index);
+        float y = ev.getY(index) - mDownEvents.get(index, ZERO).downY;
+        switch (ev.getActionMasked()) {
+            case MotionEvent.ACTION_POINTER_DOWN:
+                int pid = ev.getPointerId(index);
+                if(mFingers.get(pid, null) != null) {
+                    for(int i=0; i < ev.getPointerCount(); i++) {
+                        pid = ev.getPointerId(i);
+                        position(pid, x, y);
+                    }
+                    generateEvent(ev.getAction(), ev);
+                } else {
+                    put(pid, x, y, ev);
+                }
+                break;
+            case MotionEvent.ACTION_MOVE:
+                for(int i=0; i < ev.getPointerCount(); i++) {
+                    pid = ev.getPointerId(i);
+                    position(pid, x, y);
+                }
+                generateEvent(ev.getAction(), ev);
+                break;
+            case MotionEvent.ACTION_POINTER_UP:
+            case MotionEvent.ACTION_UP:
+                pid = ev.getPointerId(index);
+                lift(pid, index, x, y, ev);
+                break;
+            case MotionEvent.ACTION_CANCEL:
+                cancel(ev);
+                break;
+            default:
+                Log.v(TAG, "Didn't process ");
+                printSamples(TAG, ev);
+
+        }
+    }
+
+    private TouchEventTranslator put(int id, float x, float y, MotionEvent ev) {
+        return put(id, x, y, ev.getEventTime(), ev);
+    }
+
+    private TouchEventTranslator put(int id, float x, float y, long ms, MotionEvent ev) {
+        checkFingerExistence(id, false);
+        boolean isInitialDown = (mFingers.size() == 0);
+
+        mFingers.put(id, new PointF(x, y));
+        int n = mFingers.size();
+
+        if (mCache.get(n) == null) {
+            PointerProperties[] properties = new PointerProperties[n];
+            PointerCoords[] coords = new PointerCoords[n];
+            for (int i = 0; i < n; i++) {
+                properties[i] = new PointerProperties();
+                coords[i] = new PointerCoords();
+            }
+            mCache.put(n, new Pair(properties, coords));
+        }
+
+        int action;
+        if (isInitialDown) {
+            action = MotionEvent.ACTION_DOWN;
+        } else {
+            action = MotionEvent.ACTION_POINTER_DOWN;
+            // Set the id of the changed pointer.
+            action |= id << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
+        }
+        generateEvent(action, ms, ev);
+        return this;
+    }
+
+    public TouchEventTranslator position(int id, float x, float y) {
+        checkFingerExistence(id, true);
+        mFingers.get(id).set(x, y);
+        return this;
+    }
+
+    private TouchEventTranslator lift(int id, int index, MotionEvent ev) {
+        checkFingerExistence(id, true);
+        boolean isFinalUp = (mFingers.size() == 1);
+        int action;
+        if (isFinalUp) {
+            action = MotionEvent.ACTION_UP;
+        } else {
+            action = MotionEvent.ACTION_POINTER_UP;
+            // Set the id of the changed pointer.
+            action |= index << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
+        }
+        generateEvent(action, ev);
+        mFingers.remove(id);
+        return this;
+    }
+
+    private TouchEventTranslator lift(int id, int index, float x, float y, MotionEvent ev) {
+        checkFingerExistence(id, true);
+        mFingers.get(id).set(x, y);
+        return lift(id, index, ev);
+    }
+
+    public TouchEventTranslator cancel(MotionEvent ev) {
+        generateEvent(MotionEvent.ACTION_CANCEL, ev);
+        mFingers.clear();
+        return this;
+    }
+
+    private void checkFingerExistence(int id, boolean shouldExist) {
+        if (shouldExist != (mFingers.get(id, null) != null)) {
+            throw new IllegalArgumentException(
+                    shouldExist ? "Finger does not exist" : "Finger already exists");
+        }
+    }
+
+
+    /**
+     * Used to debug MotionEvents being sent/received.
+     */
+    public void printSamples(String msg, MotionEvent ev) {
+        System.out.printf("%s %s", msg, MotionEvent.actionToString(ev.getActionMasked()));
+        final int pointerCount = ev.getPointerCount();
+        System.out.printf("#%d/%d", ev.getPointerId(ev.getActionIndex()), pointerCount);
+        System.out.printf(" t=%d:", ev.getEventTime());
+        for (int p = 0; p < pointerCount; p++) {
+            System.out.printf("  id=%d: (%f,%f)",
+                    ev.getPointerId(p), ev.getX(p), ev.getY(p));
+        }
+        System.out.println();
+    }
+
+    private void generateEvent(int action, MotionEvent ev) {
+        generateEvent(action, ev.getEventTime(), ev);
+    }
+
+    private void generateEvent(int action, long ms, MotionEvent ev) {
+        Pair<PointerProperties[], PointerCoords[]> state = getFingerState();
+        MotionEvent event = MotionEvent.obtain(
+                mDownEvents.get(0).timeStamp,
+                ms,
+                action,
+                state.first.length,
+                state.first,
+                state.second,
+                ev.getMetaState(),
+                ev.getButtonState() /* buttonState */,
+                ev.getXPrecision() /* xPrecision */,
+                ev.getYPrecision() /* yPrecision */,
+                ev.getDeviceId(),
+                ev.getEdgeFlags(),
+                ev.getSource(),
+                ev.getFlags() /* flags */);
+        if (DEBUG) {
+            printSamples(TAG + " generateEvent", event);
+        }
+        mListener.accept(event);
+        event.recycle();
+    }
+
+    /**
+     * Returns the description of the fingers' state expected by MotionEvent.
+     */
+    private Pair<PointerProperties[], PointerCoords[]> getFingerState() {
+        int nFingers = mFingers.size();
+
+        Pair<PointerProperties[], PointerCoords[]> result = mCache.get(nFingers);
+        PointerProperties[] properties = result.first;
+        PointerCoords[] coordinates = result.second;
+
+        int index = 0;
+        for (int i = 0; i < mFingers.size(); i++) {
+            int id = mFingers.keyAt(i);
+            PointF location = mFingers.get(id);
+
+            PointerProperties property = properties[i];
+            property.id = id;
+            property.toolType = MotionEvent.TOOL_TYPE_FINGER;
+            properties[index] = property;
+
+            PointerCoords coordinate = coordinates[i];
+            coordinate.x = location.x;
+            coordinate.y = location.y;
+            coordinate.pressure = 1.0f;
+            coordinates[index] = coordinate;
+
+            index++;
+        }
+        return mCache.get(nFingers);
+    }
+}
diff --git a/src/com/android/launcher3/touch/WorkspaceTouchListener.java b/src/com/android/launcher3/touch/WorkspaceTouchListener.java
index 6688927..4de082e 100644
--- a/src/com/android/launcher3/touch/WorkspaceTouchListener.java
+++ b/src/com/android/launcher3/touch/WorkspaceTouchListener.java
@@ -17,6 +17,7 @@
 
 import static android.view.MotionEvent.ACTION_CANCEL;
 import static android.view.MotionEvent.ACTION_DOWN;
+import static android.view.MotionEvent.ACTION_MOVE;
 import static android.view.MotionEvent.ACTION_POINTER_UP;
 import static android.view.MotionEvent.ACTION_UP;
 import static android.view.ViewConfiguration.getLongPressTimeout;
@@ -29,6 +30,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnTouchListener;
+import android.view.ViewConfiguration;
 
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.CellLayout;
@@ -60,12 +62,16 @@
     private final Launcher mLauncher;
     private final Workspace mWorkspace;
     private final PointF mTouchDownPoint = new PointF();
+    private final float mTouchSlop;
 
     private int mLongPressState = STATE_CANCELLED;
 
     public WorkspaceTouchListener(Launcher launcher, Workspace workspace) {
         mLauncher = launcher;
         mWorkspace = workspace;
+        // Use twice the touch slop as we are looking for long press which is more
+        // likely to cause movement.
+        mTouchSlop = 2 * ViewConfiguration.get(launcher).getScaledTouchSlop();
     }
 
     @Override
@@ -116,6 +122,9 @@
             mWorkspace.onTouchEvent(ev);
             if (mWorkspace.isHandlingTouch()) {
                 cancelLongPress();
+            } else if (action == ACTION_MOVE && PointF.length(
+                    mTouchDownPoint.x - ev.getX(), mTouchDownPoint.y - ev.getY()) > mTouchSlop) {
+                cancelLongPress();
             }
 
             result = true;
diff --git a/src/com/android/launcher3/util/FlagOp.java b/src/com/android/launcher3/util/FlagOp.java
index 5e26ed1..a012c86 100644
--- a/src/com/android/launcher3/util/FlagOp.java
+++ b/src/com/android/launcher3/util/FlagOp.java
@@ -1,30 +1,16 @@
 package com.android.launcher3.util;
 
-public abstract class FlagOp {
+public interface FlagOp {
 
-    public static FlagOp NO_OP = new FlagOp() {};
+    FlagOp NO_OP = i -> i;
 
-    private FlagOp() {}
+    int apply(int flags);
 
-    public int apply(int flags) {
-        return flags;
+    static FlagOp addFlag(int flag) {
+        return i -> i + flag;
     }
 
-    public static FlagOp addFlag(final int flag) {
-        return new FlagOp() {
-            @Override
-            public int apply(int flags) {
-                return flags | flag;
-            }
-        };
-    }
-
-    public static FlagOp removeFlag(final int flag) {
-        return new FlagOp() {
-            @Override
-            public int apply(int flags) {
-                return flags & ~flag;
-            }
-        };
+    static FlagOp removeFlag(int flag) {
+        return i -> i & ~flag;
     }
 }
diff --git a/src/com/android/launcher3/views/BaseDragLayer.java b/src/com/android/launcher3/views/BaseDragLayer.java
index e8a879f..1faca15 100644
--- a/src/com/android/launcher3/views/BaseDragLayer.java
+++ b/src/com/android/launcher3/views/BaseDragLayer.java
@@ -21,6 +21,7 @@
 import android.content.Context;
 import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.util.Property;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
@@ -42,6 +43,32 @@
 public abstract class BaseDragLayer<T extends Context & ActivityContext>
         extends InsettableFrameLayout {
 
+    public static final Property<LayoutParams, Integer> LAYOUT_X =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "x") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.x;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer x) {
+                    lp.x = x;
+                }
+            };
+
+    public static final Property<LayoutParams, Integer> LAYOUT_Y =
+            new Property<LayoutParams, Integer>(Integer.TYPE, "y") {
+                @Override
+                public Integer get(LayoutParams lp) {
+                    return lp.y;
+                }
+
+                @Override
+                public void set(LayoutParams lp, Integer y) {
+                    lp.y = y;
+                }
+            };
+
     protected final int[] mTmpXY = new int[2];
     protected final Rect mHitRect = new Rect();
 
@@ -307,38 +334,6 @@
         public LayoutParams(ViewGroup.LayoutParams lp) {
             super(lp);
         }
-
-        public void setWidth(int width) {
-            this.width = width;
-        }
-
-        public int getWidth() {
-            return width;
-        }
-
-        public void setHeight(int height) {
-            this.height = height;
-        }
-
-        public int getHeight() {
-            return height;
-        }
-
-        public void setX(int x) {
-            this.x = x;
-        }
-
-        public int getX() {
-            return x;
-        }
-
-        public void setY(int y) {
-            this.y = y;
-        }
-
-        public int getY() {
-            return y;
-        }
     }
 
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
diff --git a/src/com/android/launcher3/widget/BaseWidgetSheet.java b/src/com/android/launcher3/widget/BaseWidgetSheet.java
index 20c8876..48c18f8 100644
--- a/src/com/android/launcher3/widget/BaseWidgetSheet.java
+++ b/src/com/android/launcher3/widget/BaseWidgetSheet.java
@@ -15,6 +15,8 @@
  */
 package com.android.launcher3.widget;
 
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+
 import static com.android.launcher3.logging.LoggerUtils.newContainerTarget;
 
 import android.content.Context;
@@ -31,13 +33,16 @@
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.dragndrop.DragOptions;
-import com.android.launcher3.graphics.ColorScrim;
 import com.android.launcher3.touch.ItemLongClickListener;
+import com.android.launcher3.uioverrides.WallpaperColorInfo;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Target;
 import com.android.launcher3.util.SystemUiController;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.AbstractSlideInView;
+import com.android.launcher3.views.BaseDragLayer;
+
+import androidx.core.graphics.ColorUtils;
 
 /**
  * Base class for various widgets popup
@@ -49,11 +54,11 @@
     /* Touch handling related member variables. */
     private Toast mWidgetInstructionToast;
 
-    protected final ColorScrim mColorScrim;
+    protected final View mColorScrim;
 
     public BaseWidgetSheet(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        mColorScrim = ColorScrim.createExtractedColorScrim(this);
+        mColorScrim = createColorScrim(context);
     }
 
     @Override
@@ -80,9 +85,14 @@
         return true;
     }
 
+    protected void attachToContainer() {
+        getPopupContainer().addView(mColorScrim);
+        getPopupContainer().addView(this);
+    }
+
     protected void setTranslationShift(float translationShift) {
         super.setTranslationShift(translationShift);
-        mColorScrim.setProgress(1 - mTranslationShift);
+        mColorScrim.setAlpha(1 - mTranslationShift);
     }
 
     private boolean beginDraggingWidget(WidgetCell v) {
@@ -115,6 +125,7 @@
 
     protected void onCloseComplete() {
         super.onCloseComplete();
+        getPopupContainer().removeView(mColorScrim);
         clearNavBarColor();
     }
 
@@ -148,4 +159,19 @@
     protected SystemUiController getSystemUiController() {
         return mLauncher.getSystemUiController();
     }
+
+    private static View createColorScrim(Context context) {
+        View view = new View(context);
+        view.forceHasOverlappingRendering(false);
+
+        WallpaperColorInfo colors = WallpaperColorInfo.getInstance(context);
+        int alpha = context.getResources().getInteger(R.integer.extracted_color_gradient_alpha);
+        view.setBackgroundColor(ColorUtils.setAlphaComponent(colors.getSecondaryColor(), alpha));
+
+        BaseDragLayer.LayoutParams lp = new BaseDragLayer.LayoutParams(MATCH_PARENT, MATCH_PARENT);
+        lp.ignoreInsets = true;
+        view.setLayoutParams(lp);
+
+        return view;
+    }
 }
diff --git a/src/com/android/launcher3/widget/PendingAppWidgetHostView.java b/src/com/android/launcher3/widget/PendingAppWidgetHostView.java
index 29b4b0b..50db40f 100644
--- a/src/com/android/launcher3/widget/PendingAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/PendingAppWidgetHostView.java
@@ -33,8 +33,8 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.FastBitmapDrawable;
-import com.android.launcher3.IconCache;
-import com.android.launcher3.IconCache.ItemInfoUpdateReceiver;
+import com.android.launcher3.icons.IconCache;
+import com.android.launcher3.icons.IconCache.ItemInfoUpdateReceiver;
 import com.android.launcher3.ItemInfoWithIcon;
 import com.android.launcher3.LauncherAppWidgetInfo;
 import com.android.launcher3.R;
diff --git a/src/com/android/launcher3/widget/WidgetsBottomSheet.java b/src/com/android/launcher3/widget/WidgetsBottomSheet.java
index 4ba6b5b..4bd6234 100644
--- a/src/com/android/launcher3/widget/WidgetsBottomSheet.java
+++ b/src/com/android/launcher3/widget/WidgetsBottomSheet.java
@@ -70,8 +70,7 @@
                 R.string.widgets_bottom_sheet_title, mOriginalItemInfo.title));
 
         onWidgetsBound();
-
-        getPopupContainer().addView(this);
+        attachToContainer();
         mIsOpen = false;
         animateOpen();
     }
diff --git a/src/com/android/launcher3/widget/WidgetsDiffReporter.java b/src/com/android/launcher3/widget/WidgetsDiffReporter.java
index 2ba672d..435125b 100644
--- a/src/com/android/launcher3/widget/WidgetsDiffReporter.java
+++ b/src/com/android/launcher3/widget/WidgetsDiffReporter.java
@@ -18,7 +18,7 @@
 
 import android.util.Log;
 
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.model.PackageItemInfo;
 import com.android.launcher3.widget.WidgetsListAdapter.WidgetListRowEntryComparator;
 
diff --git a/src/com/android/launcher3/widget/WidgetsFullSheet.java b/src/com/android/launcher3/widget/WidgetsFullSheet.java
index f7ff69a..1112686 100644
--- a/src/com/android/launcher3/widget/WidgetsFullSheet.java
+++ b/src/com/android/launcher3/widget/WidgetsFullSheet.java
@@ -220,8 +220,8 @@
     public static WidgetsFullSheet show(Launcher launcher, boolean animate) {
         WidgetsFullSheet sheet = (WidgetsFullSheet) launcher.getLayoutInflater()
                 .inflate(R.layout.widgets_full_sheet, launcher.getDragLayer(), false);
+        sheet.attachToContainer();
         sheet.mIsOpen = true;
-        sheet.getPopupContainer().addView(sheet);
         sheet.open(animate);
         return sheet;
     }
diff --git a/src/com/android/launcher3/widget/WidgetsListAdapter.java b/src/com/android/launcher3/widget/WidgetsListAdapter.java
index 1016d04..a45521d 100644
--- a/src/com/android/launcher3/widget/WidgetsListAdapter.java
+++ b/src/com/android/launcher3/widget/WidgetsListAdapter.java
@@ -23,7 +23,7 @@
 import android.view.View.OnLongClickListener;
 import android.view.ViewGroup;
 
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.R;
 import com.android.launcher3.WidgetPreviewLoader;
 import com.android.launcher3.model.WidgetItem;
diff --git a/tests/src/com/android/launcher3/model/BaseModelUpdateTaskTestCase.java b/tests/src/com/android/launcher3/model/BaseModelUpdateTaskTestCase.java
index dd3e859..59b2da0 100644
--- a/tests/src/com/android/launcher3/model/BaseModelUpdateTaskTestCase.java
+++ b/tests/src/com/android/launcher3/model/BaseModelUpdateTaskTestCase.java
@@ -24,7 +24,7 @@
 import com.android.launcher3.AllAppsList;
 import com.android.launcher3.AppFilter;
 import com.android.launcher3.AppInfo;
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
diff --git a/tests/src/com/android/launcher3/model/LoaderCursorTest.java b/tests/src/com/android/launcher3/model/LoaderCursorTest.java
index 29e54b1..42a2764 100644
--- a/tests/src/com/android/launcher3/model/LoaderCursorTest.java
+++ b/tests/src/com/android/launcher3/model/LoaderCursorTest.java
@@ -10,7 +10,7 @@
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
 
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
diff --git a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
index d450366..ba7d9c5 100644
--- a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
+++ b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
@@ -52,10 +52,10 @@
 import com.android.launcher3.tapl.LauncherInstrumentation;
 import com.android.launcher3.testcomponent.AppWidgetNoConfig;
 import com.android.launcher3.testcomponent.AppWidgetWithConfig;
-import com.android.launcher3.util.Condition;
 import com.android.launcher3.util.Wait;
 import com.android.launcher3.util.rule.LauncherActivityRule;
 
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
 
@@ -78,22 +78,31 @@
     public static final long DEFAULT_WORKER_TIMEOUT_SECS = 5;
 
     protected MainThreadExecutor mMainThreadExecutor = new MainThreadExecutor();
-    protected UiDevice mDevice;
-    protected LauncherInstrumentation mLauncher;
+    protected final UiDevice mDevice;
+    protected final LauncherInstrumentation mLauncher;
     protected Context mTargetContext;
     protected String mTargetPackage;
 
     private static final String TAG = "AbstractLauncherUiTest";
 
+    protected AbstractLauncherUiTest() {
+        mDevice = UiDevice.getInstance(getInstrumentation());
+        mLauncher = new LauncherInstrumentation(getInstrumentation());
+    }
+
     @Rule
     public LauncherActivityRule mActivityMonitor = new LauncherActivityRule();
 
     @Before
     public void setUp() throws Exception {
-        mDevice = UiDevice.getInstance(getInstrumentation());
-        mLauncher = new LauncherInstrumentation(getInstrumentation());
         mTargetContext = InstrumentationRegistry.getTargetContext();
         mTargetPackage = mTargetContext.getPackageName();
+        mDevice.executeShellCommand("settings put global heads_up_notifications_enabled 0");
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        mDevice.executeShellCommand("settings put global heads_up_notifications_enabled 1");
     }
 
     protected void lockRotation(boolean naturalOrientation) throws RemoteException {
@@ -278,12 +287,7 @@
     // flakiness.
     protected boolean waitForLauncherCondition(
             Function<Launcher, Boolean> condition, long timeout) {
-        return Wait.atMost(new Condition() {
-            @Override
-            public boolean isTrue() {
-                return getFromLauncher(condition);
-            }
-        }, timeout);
+        return Wait.atMost(() -> getFromLauncher(condition), timeout);
     }
 
     /**
diff --git a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
index 0dc9b2e..17fdd26 100644
--- a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
@@ -103,6 +103,8 @@
         if (mSessionId > -1) {
             mTargetContext.getPackageManager().getPackageInstaller().abandonSession(mSessionId);
         }
+
+        super.tearDown();
     }
 
     @Test
diff --git a/tests/src/com/android/launcher3/widget/WidgetsListAdapterTest.java b/tests/src/com/android/launcher3/widget/WidgetsListAdapterTest.java
index d5b14f2..307a53e 100644
--- a/tests/src/com/android/launcher3/widget/WidgetsListAdapterTest.java
+++ b/tests/src/com/android/launcher3/widget/WidgetsListAdapterTest.java
@@ -29,7 +29,7 @@
 import androidx.test.runner.AndroidJUnit4;
 import android.view.LayoutInflater;
 
-import com.android.launcher3.IconCache;
+import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.WidgetPreviewLoader;
diff --git a/tests/tapl/com/android/launcher3/tapl/AppIcon.java b/tests/tapl/com/android/launcher3/tapl/AppIcon.java
index ea47503..a11f6df 100644
--- a/tests/tapl/com/android/launcher3/tapl/AppIcon.java
+++ b/tests/tapl/com/android/launcher3/tapl/AppIcon.java
@@ -42,6 +42,7 @@
     /**
      * Clicks the icon to launch its app.
      */
+    @Deprecated
     public Background launch() {
         LauncherInstrumentation.log("AppIcon.launch before click");
         LauncherInstrumentation.assertTrue(
@@ -50,6 +51,20 @@
         return new Background(mLauncher);
     }
 
+    /**
+     * Clicks the icon to launch its app.
+     */
+    public Background launch(String packageName) {
+        LauncherInstrumentation.log("AppIcon.launch before click");
+        LauncherInstrumentation.assertTrue(
+                "Launching an app didn't open a new window: " + mIcon.getText(),
+                mIcon.clickAndWait(Until.newWindow(), LauncherInstrumentation.WAIT_TIME_MS));
+        LauncherInstrumentation.assertTrue(
+                "App didn't start: " + packageName, mLauncher.getDevice().wait(Until.hasObject(
+                        By.pkg(packageName).depth(0)), LauncherInstrumentation.WAIT_TIME_MS));
+        return new Background(mLauncher);
+    }
+
     UiObject2 getIcon() {
         return mIcon;
     }
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 441fc65..7885e3c 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -25,6 +25,7 @@
 import android.os.Parcelable;
 import android.provider.Settings;
 import android.util.Log;
+import android.view.Surface;
 import android.view.accessibility.AccessibilityEvent;
 
 import androidx.annotation.NonNull;
@@ -92,6 +93,7 @@
     private final boolean mSwipeUpEnabled;
     private Boolean mSwipeUpEnabledOverride = null;
     private final Instrumentation mInstrumentation;
+    private int mExpectedRotation = Surface.ROTATION_0;
 
     /**
      * Constructs the root of TAPL hierarchy. You get all other objects from it.
@@ -109,7 +111,7 @@
         assertTrue("Device must run in a test harness", ActivityManager.isRunningInTestHarness());
     }
 
-    // Used only by tests.
+    // Used only by TaplTests.
     public void overrideSwipeUpEnabled(Boolean swipeUpEnabledOverride) {
         mSwipeUpEnabledOverride = swipeUpEnabledOverride;
     }
@@ -144,14 +146,30 @@
         fail(message + ". " + "Actual: " + actual);
     }
 
+    static public void assertEquals(String message, int expected, int actual) {
+        if (expected != actual) {
+            fail(message + " expected: " + expected + " but was: " + actual);
+        }
+    }
+
     static void assertNotEquals(String message, int unexpected, int actual) {
         if (unexpected == actual) {
             failEquals(message, actual);
         }
     }
 
+    public void setExpectedRotation(int expectedRotation) {
+        mExpectedRotation = expectedRotation;
+    }
+
     private UiObject2 verifyContainerType(ContainerType containerType) {
+        assertEquals("Unexpected display rotation",
+                mExpectedRotation, mDevice.getDisplayRotation());
+        assertTrue("Presence of recents button doesn't match isSwipeUpEnabled()",
+                isSwipeUpEnabled() ==
+                        (mDevice.findObject(By.res(SYSTEMUI_PACKAGE, "recent_apps")) == null));
         log("verifyContainerType: " + containerType);
+
         switch (containerType) {
             case WORKSPACE: {
                 waitUntilGone(APPS_RES_ID);
@@ -172,7 +190,11 @@
                 return waitForLauncherObject(APPS_RES_ID);
             }
             case OVERVIEW: {
-                waitForLauncherObject(APPS_RES_ID);
+                if (mDevice.isNaturalOrientation()) {
+                    waitForLauncherObject(APPS_RES_ID);
+                } else {
+                    waitUntilGone(APPS_RES_ID);
+                }
                 waitUntilGone(WORKSPACE_RES_ID);
                 waitUntilGone(WIDGETS_RES_ID);
                 return waitForLauncherObject(OVERVIEW_RES_ID);
@@ -225,7 +247,10 @@
         // otherwise waitForIdle may return immediately in case when there was a big enough pause in
         // accessibility events prior to pressing Home.
         executeAndWaitForEvent(
-                () -> getSystemUiObject("home").click(),
+                () -> {
+                    log("LauncherInstrumentation.pressHome before clicking");
+                    getSystemUiObject("home").click();
+                },
                 event -> true,
                 "Pressing Home didn't produce any events");
         mDevice.waitForIdle();