diff --git a/quickstep/res/drawable/bg_overview_clear_all_button.xml b/quickstep/res/drawable/bg_overview_clear_all_button.xml
new file mode 100644
index 0000000..47cbd9f
--- /dev/null
+++ b/quickstep/res/drawable/bg_overview_clear_all_button.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2021 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<ripple android:color="?android:attr/colorControlHighlight"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android">
+    <item>
+        <shape android:shape="rectangle"
+            android:tint="?colorButtonNormal">
+            <corners android:radius="18dp" />
+            <solid android:color="?androidprv:attr/colorSurface"/>
+        </shape>
+    </item>
+</ripple>
\ No newline at end of file
diff --git a/quickstep/res/layout/overview_actions_container.xml b/quickstep/res/layout/overview_actions_container.xml
index 0c2a28c..acbb5b9 100644
--- a/quickstep/res/layout/overview_actions_container.xml
+++ b/quickstep/res/layout/overview_actions_container.xml
@@ -47,6 +47,23 @@
             android:layout_weight="1" />
 
         <Button
+            android:id="@+id/action_split"
+            style="@style/OverviewActionButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:drawableStart="@drawable/ic_split_screen"
+            android:text="@string/action_split"
+            android:theme="@style/ThemeControlHighlightWorkspaceColor"
+            android:visibility="gone" />
+
+        <Space
+            android:id="@+id/action_split_space"
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1"
+            android:visibility="gone" />
+
+        <Button
             android:id="@+id/action_share"
             style="@style/OverviewActionButton"
             android:layout_width="wrap_content"
diff --git a/quickstep/res/layout/overview_clear_all_button.xml b/quickstep/res/layout/overview_clear_all_button.xml
index 1ee726e..1dea57e 100644
--- a/quickstep/res/layout/overview_clear_all_button.xml
+++ b/quickstep/res/layout/overview_clear_all_button.xml
@@ -16,7 +16,7 @@
 -->
 <com.android.quickstep.views.ClearAllButton
     xmlns:android="http://schemas.android.com/apk/res/android"
-    style="@android:style/Widget.DeviceDefault.Button.Borderless"
+    style="@style/OverviewClearAllButton"
     android:id="@+id/clear_all"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index f1f23c4..1ec5bb8 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -166,5 +166,6 @@
     <dimen name="taskbar_stashed_size">24dp</dimen>
     <dimen name="taskbar_stashed_handle_width">220dp</dimen>
     <dimen name="taskbar_stashed_handle_height">6dp</dimen>
-    <dimen name="taskbar_edu_bg_corner_radius">28dp</dimen>
+    <dimen name="taskbar_edu_wave_anim_trans_y">25dp</dimen>
+    <dimen name="taskbar_edu_wave_anim_trans_y_return_overshoot">4dp</dimen>
 </resources>
diff --git a/quickstep/res/values/strings.xml b/quickstep/res/values/strings.xml
index 004949a..7158287 100644
--- a/quickstep/res/values/strings.xml
+++ b/quickstep/res/values/strings.xml
@@ -191,6 +191,8 @@
     <string name="action_share">Share</string>
     <!-- Label for a button that causes a screen shot of the current app to be taken. [CHAR_LIMIT=40] -->
     <string name="action_screenshot">Screenshot</string>
+    <!-- Label for a button that enters split screen selection mode. [CHAR_LIMIT=20] -->
+    <string name="action_split">Split</string>
     <!-- Message shown when an action is blocked by a policy enforced by the app or the organization managing the device. [CHAR_LIMIT=NONE] -->
     <string name="blocked_by_policy">This action isn\'t allowed by the app or your organization</string>
 
diff --git a/quickstep/res/values/styles.xml b/quickstep/res/values/styles.xml
index 0a69c05..b5444b5 100644
--- a/quickstep/res/values/styles.xml
+++ b/quickstep/res/values/styles.xml
@@ -135,6 +135,13 @@
         <item name="android:textAllCaps">false</item>
     </style>
 
+    <style name="OverviewClearAllButton" parent="@android:style/Widget.DeviceDefault.Button">
+        <item name="android:background">@drawable/bg_overview_clear_all_button</item>
+        <item name="android:minWidth">85dp</item>
+        <item name="android:minHeight">36dp</item>
+        <item name="android:stateListAnimator">@null</item>
+    </style>
+
     <!-- Icon displayed on the taskbar -->
     <style name="BaseIcon.Workspace.Taskbar" >
         <item name="iconDisplay">taskbar</item>
diff --git a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
index b40a1d5..13baf56 100644
--- a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
+++ b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
@@ -200,6 +200,7 @@
         }
 
         int predictionIndex = 0;
+        int numViewsAnimated = 0;
         ArrayList<WorkspaceItemInfo> newItems = new ArrayList<>();
         // make sure predicted icon removal and filling predictions don't step on each other
         if (mIconRemoveAnimators != null && mIconRemoveAnimators.isRunning()) {
@@ -233,7 +234,11 @@
                     (WorkspaceItemInfo) mPredictedItems.get(predictionIndex++);
             if (isPredictedIcon(child) && child.isEnabled()) {
                 PredictedAppIcon icon = (PredictedAppIcon) child;
-                icon.applyFromWorkspaceItem(predictedItem);
+                boolean animateIconChange = icon.shouldAnimateIconChange(predictedItem);
+                icon.applyFromWorkspaceItem(predictedItem, animateIconChange, numViewsAnimated);
+                if (animateIconChange) {
+                    numViewsAnimated++;
+                }
                 icon.finishBinding(mPredictionLongClickListener);
             } else {
                 newItems.add(predictedItem);
diff --git a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index 5777fb9..68159fa 100644
--- a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -26,6 +26,7 @@
 import android.os.IBinder;
 import android.os.SystemProperties;
 import android.util.FloatProperty;
+import android.view.AttachedSurfaceControl;
 import android.view.CrossWindowBlurListeners;
 import android.view.SurfaceControl;
 import android.view.View;
@@ -316,7 +317,12 @@
                 transaction.setEarlyWakeupEnd();
                 mInEarlyWakeUp = false;
             }
-            transaction.apply();
+
+            AttachedSurfaceControl rootSurfaceControl =
+                    mLauncher.getRootView().getRootSurfaceControl();
+            if (rootSurfaceControl != null) {
+                rootSurfaceControl.applyTransactionOnDraw(transaction);
+            }
         }
         return true;
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index da10bfb..acabb0d 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -34,6 +34,7 @@
 import com.android.launcher3.R;
 import com.android.launcher3.anim.AnimatorListeners;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.model.data.ItemInfoWithIcon;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
 import com.android.launcher3.util.OnboardingPrefs;
@@ -45,6 +46,9 @@
 import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 
+import java.util.Arrays;
+import java.util.stream.Stream;
+
 /**
  * A data source which integrates with a Launcher instance
  */
@@ -268,6 +272,11 @@
         mTaskbarOverrideBackgroundAlpha.updateValue(forceHide ? 0 : 1);
     }
 
+    @Override
+    public Stream<ItemInfoWithIcon> getAppIconsForEdu() {
+        return Arrays.stream(mLauncher.getAppsView().getAppsStore().getApps());
+    }
+
     /**
      * Starts the taskbar education flow, if the user hasn't seen it yet.
      */
diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
index e871c25..be9368f 100644
--- a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -261,6 +261,13 @@
     }
 
     /**
+     * Returns true if the recents (overview) button is disabled
+     */
+    public boolean isRecentsDisabled() {
+        return (mState & FLAG_DISABLE_RECENTS) != 0;
+    }
+
+    /**
      * Adds the bounds corresponding to all visible buttons to provided region
      */
     public void addVisibleButtonsRegion(TaskbarDragLayer parent, Region outRegion) {
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 8d7a6dc..8c12567 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -236,6 +236,8 @@
                 systemUiStateFlags, forceUpdate);
         mControllers.taskbarViewController.setImeIsVisible(
                 mControllers.navbarButtonsViewController.isImeVisible());
+        mControllers.taskbarViewController.setRecentsButtonDisabled(
+                mControllers.navbarButtonsViewController.isRecentsDisabled());
         mControllers.taskbarKeyguardController.updateStateForSysuiFlags(systemUiStateFlags);
     }
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
index b32a41e..1197543 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
@@ -78,6 +78,7 @@
         taskbarKeyguardController.init(navbarButtonsViewController);
         stashedHandleViewController.init(this);
         taskbarStashController.init(this);
+        taskbarEduController.init(this);
     }
 
     /**
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java
index ae9592d..fd5c2ea 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduController.java
@@ -15,16 +15,72 @@
  */
 package com.android.launcher3.taskbar;
 
+import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.anim.Interpolators.ACCEL_2;
+import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL;
+import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.animation.Keyframe;
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
+import android.animation.TimeInterpolator;
+import android.content.res.Resources;
+import android.text.TextUtils;
+import android.view.View;
+
 import com.android.launcher3.R;
+import com.android.launcher3.icons.BitmapInfo;
+import com.android.launcher3.model.data.ItemInfo;
+import com.android.launcher3.uioverrides.PredictedAppIcon;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
 
 /** Handles the Taskbar Education flow. */
 public class TaskbarEduController {
 
+    private static final long WAVE_ANIM_DELAY = 250;
+    private static final long WAVE_ANIM_STAGGER = 50;
+    private static final long WAVE_ANIM_EACH_ICON_DURATION = 633;
+    private static final long WAVE_ANIM_SLOT_MACHINE_DURATION = 1085;
+    // The fraction of each icon's animation at which we reach the top point of the wave.
+    private static final float WAVE_ANIM_FRACTION_TOP = 0.4f;
+    // The fraction of each icon's animation at which we reach the bottom, before overshooting.
+    private static final float WAVE_ANIM_FRACTION_BOTTOM = 0.9f;
+    private static final TimeInterpolator WAVE_ANIM_TO_TOP_INTERPOLATOR = FAST_OUT_SLOW_IN;
+    private static final TimeInterpolator WAVE_ANIM_TO_BOTTOM_INTERPOLATOR = ACCEL_2;
+    private static final TimeInterpolator WAVE_ANIM_OVERSHOOT_INTERPOLATOR = DEACCEL;
+    private static final TimeInterpolator WAVE_ANIM_OVERSHOOT_RETURN_INTERPOLATOR = ACCEL_DEACCEL;
+    private static final float WAVE_ANIM_ICON_SCALE = 1.2f;
+    // How many icons to cycle through in the slot machine (+ the original icon at each end).
+    private static final int WAVE_ANIM_SLOT_MACHINE_NUM_ICONS = 3;
+
     private final TaskbarActivityContext mActivity;
+    private final float mWaveAnimTranslationY;
+    private final float mWaveAnimTranslationYReturnOvershoot;
+
+    // Initialized in init.
+    TaskbarControllers mControllers;
+
     private TaskbarEduView mTaskbarEduView;
+    private Animator mAnim;
 
     public TaskbarEduController(TaskbarActivityContext activity) {
         mActivity = activity;
+
+        final Resources resources = activity.getResources();
+        mWaveAnimTranslationY = resources.getDimension(R.dimen.taskbar_edu_wave_anim_trans_y);
+        mWaveAnimTranslationYReturnOvershoot = resources.getDimension(
+                R.dimen.taskbar_edu_wave_anim_trans_y_return_overshoot);
+    }
+
+    public void init(TaskbarControllers controllers) {
+        mControllers = controllers;
     }
 
     void showEdu() {
@@ -35,6 +91,7 @@
             mTaskbarEduView.init(new TaskbarEduCallbacks());
             mTaskbarEduView.addOnCloseListener(() -> mTaskbarEduView = null);
             mTaskbarEduView.show();
+            startAnim(createWaveAnim());
         });
     }
 
@@ -44,6 +101,90 @@
         }
     }
 
+    /**
+     * Starts the given animation, ending the previous animation first if it's still playing.
+     */
+    private void startAnim(Animator anim) {
+        if (mAnim != null) {
+            mAnim.end();
+        }
+        mAnim = anim;
+        mAnim.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mAnim = null;
+            }
+        });
+        mAnim.start();
+    }
+
+    /**
+     * Creates a staggered "wave" animation where each icon translates and scales up in succession.
+     */
+    private Animator createWaveAnim() {
+        AnimatorSet waveAnim = new AnimatorSet();
+        View[] icons = mControllers.taskbarViewController.getIconViews();
+        for (int i = 0; i < icons.length; i++) {
+            View icon = icons[i];
+            AnimatorSet iconAnim = new AnimatorSet();
+
+            Keyframe[] scaleKeyframes = new Keyframe[] {
+                    Keyframe.ofFloat(0, 1f),
+                    Keyframe.ofFloat(WAVE_ANIM_FRACTION_TOP, WAVE_ANIM_ICON_SCALE),
+                    Keyframe.ofFloat(WAVE_ANIM_FRACTION_BOTTOM, 1f),
+                    Keyframe.ofFloat(1f, 1f)
+            };
+            scaleKeyframes[1].setInterpolator(WAVE_ANIM_TO_TOP_INTERPOLATOR);
+            scaleKeyframes[2].setInterpolator(WAVE_ANIM_TO_BOTTOM_INTERPOLATOR);
+
+            Keyframe[] translationYKeyframes = new Keyframe[] {
+                    Keyframe.ofFloat(0, 0f),
+                    Keyframe.ofFloat(WAVE_ANIM_FRACTION_TOP, -mWaveAnimTranslationY),
+                    Keyframe.ofFloat(WAVE_ANIM_FRACTION_BOTTOM, 0f),
+                    // Half of the remaining fraction overshoots, then the other half returns to 0.
+                    Keyframe.ofFloat(
+                            WAVE_ANIM_FRACTION_BOTTOM + (1 - WAVE_ANIM_FRACTION_BOTTOM) / 2f,
+                            mWaveAnimTranslationYReturnOvershoot),
+                    Keyframe.ofFloat(1f, 0f)
+            };
+            translationYKeyframes[1].setInterpolator(WAVE_ANIM_TO_TOP_INTERPOLATOR);
+            translationYKeyframes[2].setInterpolator(WAVE_ANIM_TO_BOTTOM_INTERPOLATOR);
+            translationYKeyframes[3].setInterpolator(WAVE_ANIM_OVERSHOOT_INTERPOLATOR);
+            translationYKeyframes[4].setInterpolator(WAVE_ANIM_OVERSHOOT_RETURN_INTERPOLATOR);
+
+            iconAnim.play(ObjectAnimator.ofPropertyValuesHolder(icon,
+                    PropertyValuesHolder.ofKeyframe(SCALE_PROPERTY, scaleKeyframes))
+                    .setDuration(WAVE_ANIM_EACH_ICON_DURATION));
+            iconAnim.play(ObjectAnimator.ofPropertyValuesHolder(icon,
+                    PropertyValuesHolder.ofKeyframe(View.TRANSLATION_Y, translationYKeyframes))
+                    .setDuration(WAVE_ANIM_EACH_ICON_DURATION));
+
+            if (icon instanceof PredictedAppIcon) {
+                // Play slot machine animation through random icons from AllAppsList.
+                PredictedAppIcon predictedAppIcon = (PredictedAppIcon) icon;
+                ItemInfo itemInfo = (ItemInfo) icon.getTag();
+                List<BitmapInfo> iconsToAnimate = mControllers.uiController.getAppIconsForEdu()
+                        .filter(appInfo -> !TextUtils.equals(appInfo.title, itemInfo.title))
+                        .map(appInfo -> appInfo.bitmap)
+                        .filter(bitmap -> !bitmap.isNullOrLowRes())
+                        .collect(Collectors.toList());
+                // Pick n icons at random.
+                Collections.shuffle(iconsToAnimate);
+                if (iconsToAnimate.size() > WAVE_ANIM_SLOT_MACHINE_NUM_ICONS) {
+                    iconsToAnimate = iconsToAnimate.subList(0, WAVE_ANIM_SLOT_MACHINE_NUM_ICONS);
+                }
+                Animator slotMachineAnim = predictedAppIcon.createSlotMachineAnim(iconsToAnimate);
+                if (slotMachineAnim != null) {
+                    iconAnim.play(slotMachineAnim.setDuration(WAVE_ANIM_SLOT_MACHINE_DURATION));
+                }
+            }
+
+            iconAnim.setStartDelay(WAVE_ANIM_STAGGER * i);
+            waveAnim.play(iconAnim);
+        }
+        waveAnim.setStartDelay(WAVE_ANIM_DELAY);
+        return waveAnim;
+    }
 
     /**
      * Callbacks for {@link TaskbarEduView} to interact with its controller.
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java
index 9c4e844..8525427 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarEduView.java
@@ -15,7 +15,7 @@
  */
 package com.android.launcher3.taskbar;
 
-import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
+import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE;
 
 import android.animation.PropertyValuesHolder;
 import android.content.Context;
@@ -33,6 +33,7 @@
 public class TaskbarEduView extends AbstractSlideInView<TaskbarActivityContext>
         implements Insettable {
 
+    private static final int DEFAULT_OPEN_DURATION = 500;
     private static final int DEFAULT_CLOSE_DURATION = 200;
 
     private final Rect mInsets = new Rect();
@@ -129,8 +130,8 @@
         mIsOpen = true;
         mOpenCloseAnimator.setValues(
                 PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
-        mOpenCloseAnimator.setInterpolator(FAST_OUT_SLOW_IN);
-        mOpenCloseAnimator.start();
+        mOpenCloseAnimator.setInterpolator(AGGRESSIVE_EASE);
+        mOpenCloseAnimator.setDuration(DEFAULT_OPEN_DURATION).start();
     }
 
     void snapToPage(int page) {
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
index df88e02..c0312a0 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
@@ -17,6 +17,10 @@
 
 import android.graphics.Rect;
 
+import com.android.launcher3.model.data.ItemInfoWithIcon;
+
+import java.util.stream.Stream;
+
 /**
  * Base class for providing different taskbar UI
  */
@@ -35,4 +39,8 @@
     protected void updateContentInsets(Rect outContentInsets) { }
 
     protected void onStashedInAppChanged() { }
+
+    public Stream<ItemInfoWithIcon> getAppIconsForEdu() {
+        return Stream.empty();
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
index a4a92f7..5144d9a 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarView.java
@@ -90,6 +90,9 @@
         // We layout the icons to be of mIconTouchSize in width and height
         mItemMarginLeftRight = actualMargin - (mIconTouchSize - actualIconSize) / 2;
         mItemPadding = (mIconTouchSize - actualIconSize) / 2;
+
+        // Needed to draw folder leave-behind when opening one.
+        setWillNotDraw(false);
     }
 
     protected void init(TaskbarViewController.TaskbarViewCallbacks callbacks) {
@@ -115,6 +118,7 @@
      */
     protected void updateHotseatItems(ItemInfo[] hotseatItemInfos) {
         int nextViewIndex = 0;
+        int numViewsAnimated = 0;
 
         for (int i = 0; i < hotseatItemInfos.length; i++) {
             ItemInfo hotseatItemInfo = hotseatItemInfos[i];
@@ -170,8 +174,14 @@
             // Apply the Hotseat ItemInfos, or hide the view if there is none for a given index.
             if (hotseatView instanceof BubbleTextView
                     && hotseatItemInfo instanceof WorkspaceItemInfo) {
-                ((BubbleTextView) hotseatView).applyFromWorkspaceItem(
-                        (WorkspaceItemInfo) hotseatItemInfo);
+                BubbleTextView btv = (BubbleTextView) hotseatView;
+                WorkspaceItemInfo workspaceInfo = (WorkspaceItemInfo) hotseatItemInfo;
+
+                boolean animate = btv.shouldAnimateIconChange((WorkspaceItemInfo) hotseatItemInfo);
+                btv.applyFromWorkspaceItem(workspaceInfo, animate, numViewsAnimated);
+                if (animate) {
+                    numViewsAnimated++;
+                }
             }
             setClickAndLongClickListenersForIcon(hotseatView);
             nextViewIndex++;
@@ -256,6 +266,18 @@
         return mIconLayoutBounds;
     }
 
+    /**
+     * Returns the app icons currently shown in the taskbar.
+     */
+    public View[] getIconViews() {
+        final int count = getChildCount();
+        View[] icons = new View[count];
+        for (int i = 0; i < count; i++) {
+            icons[i] = getChildAt(i);
+        }
+        return icons;
+    }
+
     // FolderIconParent implemented methods.
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
index 1882762..40b0e18 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
@@ -44,6 +44,8 @@
     public static final int ALPHA_INDEX_IME = 1;
     public static final int ALPHA_INDEX_KEYGUARD = 2;
     public static final int ALPHA_INDEX_STASH = 3;
+    public static final int ALPHA_INDEX_RECENTS_DISABLED = 4;
+    private static final int NUM_ALPHA_CHANNELS = 5;
 
     private final TaskbarActivityContext mActivity;
     private final TaskbarView mTaskbarView;
@@ -67,7 +69,7 @@
     public TaskbarViewController(TaskbarActivityContext activity, TaskbarView taskbarView) {
         mActivity = activity;
         mTaskbarView = taskbarView;
-        mTaskbarIconAlpha = new MultiValueAlpha(mTaskbarView, 4);
+        mTaskbarIconAlpha = new MultiValueAlpha(mTaskbarView, NUM_ALPHA_CHANNELS);
         mTaskbarIconAlpha.setUpdateVisibility(true);
         mModelCallbacks = new TaskbarModelCallbacks(activity, mTaskbarView);
     }
@@ -101,6 +103,14 @@
     }
 
     /**
+     * Should be called when the recents button is disabled, so we can hide taskbar icons as well.
+     */
+    public void setRecentsButtonDisabled(boolean isDisabled) {
+        // TODO: check TaskbarStashController#supportsStashing(), to stash instead of setting alpha.
+        mTaskbarIconAlpha.getProperty(ALPHA_INDEX_RECENTS_DISABLED).setValue(isDisabled ? 0 : 1);
+    }
+
+    /**
      * Sets OnClickListener and OnLongClickListener for the given view.
      */
     public void setClickAndLongClickListenersForIcon(View icon) {
@@ -111,6 +121,10 @@
         return mTaskbarView.getIconLayoutBounds();
     }
 
+    public View[] getIconViews() {
+        return mTaskbarView.getIconViews();
+    }
+
     public AnimatedFloat getTaskbarIconScaleForStash() {
         return mTaskbarIconScaleForStash;
     }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/PredictedAppIcon.java b/quickstep/src/com/android/launcher3/uioverrides/PredictedAppIcon.java
index d839a36..ee6e8ce 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/PredictedAppIcon.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/PredictedAppIcon.java
@@ -15,6 +15,16 @@
  */
 package com.android.launcher3.uioverrides;
 
+import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
+
+import android.animation.Animator;
+import android.animation.AnimatorSet;
+import android.animation.ArgbEvaluator;
+import android.animation.Keyframe;
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
+import android.animation.ValueAnimator;
+import android.annotation.Nullable;
 import android.content.Context;
 import android.graphics.BlurMaskFilter;
 import android.graphics.Canvas;
@@ -23,8 +33,10 @@
 import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
 import android.os.Process;
 import android.util.AttributeSet;
+import android.util.FloatProperty;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 
@@ -35,6 +47,8 @@
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.R;
+import com.android.launcher3.anim.AnimatorListeners;
+import com.android.launcher3.icons.BitmapInfo;
 import com.android.launcher3.icons.GraphicsUtils;
 import com.android.launcher3.icons.IconNormalizer;
 import com.android.launcher3.icons.LauncherIcons;
@@ -45,6 +59,10 @@
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.DoubleShadowBubbleTextView;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
 /**
  * A BubbleTextView with a ring around it's drawable
  */
@@ -53,6 +71,9 @@
     private static final int RING_SHADOW_COLOR = 0x99000000;
     private static final float RING_EFFECT_RATIO = 0.095f;
 
+    private static final long ICON_CHANGE_ANIM_DURATION = 360;
+    private static final long ICON_CHANGE_ANIM_STAGGER = 50;
+
     boolean mIsDrawingDot = false;
     private final DeviceProfile mDeviceProfile;
     private final Paint mIconRingPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
@@ -67,6 +88,25 @@
     private int mPlateColor;
     boolean mDrawForDrag = false;
 
+    // Used for the "slot-machine" education animation.
+    private List<Drawable> mSlotMachineIcons;
+    private Animator mSlotMachineAnim;
+    private float mSlotMachineIconTranslationY;
+
+    private static final FloatProperty<PredictedAppIcon> SLOT_MACHINE_TRANSLATION_Y =
+            new FloatProperty<PredictedAppIcon>("slotMachineTranslationY") {
+        @Override
+        public void setValue(PredictedAppIcon predictedAppIcon, float transY) {
+            predictedAppIcon.mSlotMachineIconTranslationY = transY;
+            predictedAppIcon.invalidate();
+        }
+
+        @Override
+        public Float get(PredictedAppIcon predictedAppIcon) {
+            return predictedAppIcon.mSlotMachineIconTranslationY;
+        }
+    };
+
     public PredictedAppIcon(Context context) {
         this(context, null, 0);
     }
@@ -88,15 +128,38 @@
     @Override
     public void onDraw(Canvas canvas) {
         int count = canvas.save();
+        boolean isSlotMachineAnimRunning = mSlotMachineAnim != null;
         if (!mIsPinned) {
             drawEffect(canvas);
+            if (isSlotMachineAnimRunning) {
+                // Clip to to outside of the ring during the slot machine animation.
+                canvas.clipPath(mRingPath);
+            }
             canvas.translate(getWidth() * RING_EFFECT_RATIO, getHeight() * RING_EFFECT_RATIO);
             canvas.scale(1 - 2 * RING_EFFECT_RATIO, 1 - 2 * RING_EFFECT_RATIO);
         }
-        super.onDraw(canvas);
+        if (isSlotMachineAnimRunning) {
+            drawSlotMachineIcons(canvas);
+        } else {
+            super.onDraw(canvas);
+        }
         canvas.restoreToCount(count);
     }
 
+    private void drawSlotMachineIcons(Canvas canvas) {
+        canvas.translate((getWidth() - getIconSize()) / 2f,
+                (getHeight() - getIconSize()) / 2f + mSlotMachineIconTranslationY);
+        for (Drawable icon : mSlotMachineIcons) {
+            icon.setBounds(0, 0, getIconSize(), getIconSize());
+            icon.draw(canvas);
+            canvas.translate(0, getSlotMachineIconPlusSpacingSize());
+        }
+    }
+
+    private float getSlotMachineIconPlusSpacingSize() {
+        return getIconSize() + getOutlineOffsetY();
+    }
+
     @Override
     protected void drawDotIfNecessary(Canvas canvas) {
         mIsDrawingDot = true;
@@ -109,9 +172,17 @@
     }
 
     @Override
-    public void applyFromWorkspaceItem(WorkspaceItemInfo info) {
-        super.applyFromWorkspaceItem(info);
-        mPlateColor = ColorUtils.setAlphaComponent(mDotParams.color, 200);
+    public void applyFromWorkspaceItem(WorkspaceItemInfo info, boolean animate, int staggerIndex) {
+        // Create the slot machine animation first, since it uses the current icon to start.
+        Animator slotMachineAnim = animate
+                ? createSlotMachineAnim(Collections.singletonList(info.bitmap), false)
+                : null;
+        super.applyFromWorkspaceItem(info, animate, staggerIndex);
+        int oldPlateColor = mPlateColor;
+        int newPlateColor = ColorUtils.setAlphaComponent(mDotParams.color, 200);
+        if (!animate) {
+            mPlateColor = newPlateColor;
+        }
         if (mIsPinned) {
             setContentDescription(info.contentDescription);
         } else {
@@ -119,6 +190,76 @@
                     getContext().getString(R.string.hotseat_prediction_content_description,
                             info.contentDescription));
         }
+
+        if (animate) {
+            ValueAnimator plateColorAnim = ValueAnimator.ofObject(new ArgbEvaluator(),
+                    oldPlateColor, newPlateColor);
+            plateColorAnim.addUpdateListener(valueAnimator -> {
+                mPlateColor = (int) valueAnimator.getAnimatedValue();
+                invalidate();
+            });
+            AnimatorSet changeIconAnim = new AnimatorSet();
+            if (slotMachineAnim != null) {
+                changeIconAnim.play(slotMachineAnim);
+            }
+            changeIconAnim.play(plateColorAnim);
+            changeIconAnim.setStartDelay(staggerIndex * ICON_CHANGE_ANIM_STAGGER);
+            changeIconAnim.setDuration(ICON_CHANGE_ANIM_DURATION).start();
+        }
+    }
+
+    /**
+     * Returns an Animator that translates the given icons in a "slot-machine" fashion, beginning
+     * and ending with the original icon.
+     */
+    public @Nullable Animator createSlotMachineAnim(List<BitmapInfo> iconsToAnimate) {
+        return createSlotMachineAnim(iconsToAnimate, true);
+    }
+
+    /**
+     * Returns an Animator that translates the given icons in a "slot-machine" fashion, beginning
+     * with the original icon, then cycling through the given icons, optionally ending back with
+     * the original icon.
+     * @param endWithOriginalIcon Whether we should land back on the icon we started with, rather
+     *                            than the last item in iconsToAnimate.
+     */
+    public @Nullable Animator createSlotMachineAnim(List<BitmapInfo> iconsToAnimate,
+            boolean endWithOriginalIcon) {
+        if (mIsPinned || iconsToAnimate == null || iconsToAnimate.isEmpty()) {
+            return null;
+        }
+        if (mSlotMachineAnim != null) {
+            mSlotMachineAnim.end();
+        }
+
+        // Bookend the other animating icons with the original icon on both ends.
+        mSlotMachineIcons = new ArrayList<>(iconsToAnimate.size() + 2);
+        mSlotMachineIcons.add(getIcon());
+        iconsToAnimate.stream()
+                .map(iconInfo -> iconInfo.newThemedIcon(mContext))
+                .forEach(mSlotMachineIcons::add);
+        if (endWithOriginalIcon) {
+            mSlotMachineIcons.add(getIcon());
+        }
+
+        float finalTrans = -getSlotMachineIconPlusSpacingSize() * (mSlotMachineIcons.size() - 1);
+        Keyframe[] keyframes = new Keyframe[] {
+                Keyframe.ofFloat(0f, 0f),
+                Keyframe.ofFloat(0.82f, finalTrans - getOutlineOffsetY() / 2f), // Overshoot
+                Keyframe.ofFloat(1f, finalTrans) // Ease back into the final position
+        };
+        keyframes[1].setInterpolator(ACCEL_DEACCEL);
+        keyframes[2].setInterpolator(ACCEL_DEACCEL);
+
+        mSlotMachineAnim = ObjectAnimator.ofPropertyValuesHolder(this,
+                PropertyValuesHolder.ofKeyframe(SLOT_MACHINE_TRANSLATION_Y, keyframes));
+        mSlotMachineAnim.addListener(AnimatorListeners.forEndCallback(() -> {
+            mSlotMachineIcons = null;
+            mSlotMachineAnim = null;
+            mSlotMachineIconTranslationY = 0;
+            invalidate();
+        }));
+        return mSlotMachineAnim;
     }
 
     /**
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
index 1882a0c..9fc0450 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
@@ -43,8 +43,12 @@
     @Override
     public float getSplitSelectTranslation(Launcher launcher) {
         RecentsView recentsView = launcher.getOverviewPanel();
-        int splitPosition = recentsView.getSplitPlaceholder()
-                .getActiveSplitPositionOption().mStagePosition;
+//<<<<<<< HEAD
+//        int splitPosition = recentsView.getSplitPlaceholder()
+//                .getActiveSplitPositionOption().stagePosition;
+//=======
+        int splitPosition = recentsView.getSplitPlaceholder().getActiveSplitStagePosition();
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
         if (!recentsView.shouldShiftThumbnailsForSplitSelect(splitPosition)) {
             return 0f;
         }
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index 46d5857..6e90a3a 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -1194,9 +1194,6 @@
     @UiThread
     private void animateToProgressInternal(float start, float end, long duration,
             Interpolator interpolator, GestureEndTarget target, PointF velocityPxPerMs) {
-        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
-            Log.d(TestProtocol.L3_SWIPE_TO_HOME, "7");
-        }
         maybeUpdateRecentsAttachedState();
 
         // If we are transitioning to launcher, then listen for the activity to be restarted while
@@ -1219,6 +1216,9 @@
             }
         }
 
+        if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+            Log.d(TestProtocol.L3_SWIPE_TO_HOME, "7, end target=" + mGestureState.getEndTarget());
+        }
         if (mGestureState.getEndTarget() == HOME) {
             getOrientationHandler().adjustFloatingIconStartVelocity(velocityPxPerMs);
             final RemoteAnimationTargetCompat runningTaskTarget = mRecentsAnimationTargets != null
@@ -1233,6 +1233,9 @@
                     && runningTaskTarget.allowEnterPip
                     && runningTaskTarget.taskInfo.pictureInPictureParams != null
                     && runningTaskTarget.taskInfo.pictureInPictureParams.isAutoEnterEnabled();
+            if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
+                Log.d(TestProtocol.L3_SWIPE_TO_HOME, "8, class=" + getClass().getSimpleName());
+            }
             HomeAnimationFactory homeAnimFactory =
                     createHomeAnimationFactory(cookies, duration, isTranslucent, appCanEnterPip,
                             runningTaskTarget);
diff --git a/quickstep/src/com/android/quickstep/BaseActivityInterface.java b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
index e2ef3bc..6298bb8 100644
--- a/quickstep/src/com/android/quickstep/BaseActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
@@ -53,7 +53,6 @@
 import com.android.launcher3.statemanager.BaseState;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.touch.PagedOrientationHandler;
-import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.WindowBounds;
 import com.android.launcher3.views.ScrimView;
 import com.android.quickstep.SysUINavigationMode.Mode;
@@ -203,33 +202,6 @@
     }
 
     /**
-     * Sets the task size in {@param outRect} taking split screened windows into account.
-     * We assume combined height of both tasks will be same as one normal task, then we'll modify
-     * the task height/width based on the ratio of task screen space bounds from
-     * {@param splitInfo}
-     *
-     * @param desiredStageBounds whether task size for top/left or bottom/right needs to be computed
-     */
-    public final void calculateStagedSplitTaskSize(Context context, DeviceProfile dp, Rect outRect,
-            SplitConfigurationOptions.StagedSplitBounds splitInfo,
-            @SplitConfigurationOptions.StagePosition int desiredStageBounds) {
-        calculateTaskSize(context, dp, outRect);
-
-        // TODO(b/181705607) Change for landscape vs portrait
-        float totalHeight = splitInfo.mLeftTopBounds.height()
-                + splitInfo.mRightBottomBounds.height()
-                + splitInfo.mDividerBounds.height() / 2f;
-        float topTaskPercent = splitInfo.mLeftTopBounds.height() / totalHeight;
-        if (desiredStageBounds == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
-            float diff = outRect.height() * (1f - topTaskPercent);
-            outRect.bottom -= diff;
-        } else {
-            float diff = outRect.height() * topTaskPercent;
-            outRect.top += diff;
-        }
-    }
-
-    /**
      * Calculates the taskView size for the provided device configuration.
      */
     public final void calculateTaskSize(Context context, DeviceProfile dp, Rect outRect) {
diff --git a/quickstep/src/com/android/quickstep/TaskOverlayFactory.java b/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
index f49c9b0..eb5c43f 100644
--- a/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
+++ b/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
@@ -218,6 +218,11 @@
             }
         }
 
+        private void enterSplitSelect() {
+            RecentsView overviewPanel = mThumbnailView.getTaskView().getRecentsView();
+            overviewPanel.initiateSplitSelect(mThumbnailView.getTaskView());
+        }
+
         /**
          * Called when the overlay is no longer used.
          */
@@ -323,6 +328,10 @@
             public void onScreenshot() {
                 endLiveTileMode(() -> saveScreenshot(mTask));
             }
+
+            public void onSplit() {
+                endLiveTileMode(TaskOverlay.this::enterSplitSelect);
+            }
         }
     }
 
@@ -336,5 +345,8 @@
 
         /** User has indicated they want to screenshot the current task. */
         void onScreenshot();
+
+        /** User wants to start split screen with current app. */
+        void onSplit();
     }
 }
diff --git a/quickstep/src/com/android/quickstep/TaskShortcutFactory.java b/quickstep/src/com/android/quickstep/TaskShortcutFactory.java
index a078bf3..559125e 100644
--- a/quickstep/src/com/android/quickstep/TaskShortcutFactory.java
+++ b/quickstep/src/com/android/quickstep/TaskShortcutFactory.java
@@ -100,7 +100,7 @@
         private SplitPositionOption mSplitPositionOption;
         public SplitSelectSystemShortcut(BaseDraggingActivity target, TaskView taskView,
                 SplitPositionOption option) {
-            super(option.mIconResId, option.mTextResId, target, taskView.getItemInfo());
+            super(option.iconResId, option.textResId, target, taskView.getItemInfo());
             mTaskView = taskView;
             mSplitPositionOption = option;
             setEnabled(taskView.getRecentsView().getTaskViewCount() > 1);
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index 20eff34..2e42392 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -146,7 +146,7 @@
     private static final int SYSTEM_ACTION_ID_ALL_APPS = 14;
 
     public static final boolean ENABLE_PER_WINDOW_INPUT_ROTATION =
-            SystemProperties.getBoolean("persist.debug.per_window_input_rotation", false);
+            SystemProperties.getBoolean("persist.debug.per_window_input_rotation", true);
 
     private int mBackGestureNotificationCounter = -1;
     @Nullable
diff --git a/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java b/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
index 16c925a..eb77ac0 100644
--- a/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
+++ b/quickstep/src/com/android/quickstep/util/SplitSelectStateController.java
@@ -32,12 +32,11 @@
 import android.view.SurfaceControl;
 import android.window.TransitionInfo;
 
-import androidx.annotation.Nullable;
-
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.InsettableFrameLayout;
 import com.android.launcher3.R;
-import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskAnimationManager;
 import com.android.quickstep.TaskViewUtils;
@@ -57,7 +56,7 @@
     private final SystemUiProxy mSystemUiProxy;
     private TaskView mInitialTaskView;
     private TaskView mSecondTaskView;
-    private SplitPositionOption mInitialPosition;
+    private @StagePosition int mStagePosition;
     private Rect mInitialBounds;
     private final Handler mHandler;
 
@@ -69,10 +68,10 @@
     /**
      * To be called after first task selected
      */
-    public void setInitialTaskSelect(TaskView taskView, SplitPositionOption positionOption,
+    public void setInitialTaskSelect(TaskView taskView, @StagePosition int stagePosition,
             Rect initialBounds) {
         mInitialTaskView = taskView;
-        mInitialPosition = positionOption;
+        mStagePosition = stagePosition;
         mInitialBounds = initialBounds;
     }
 
@@ -83,7 +82,11 @@
         mSecondTaskView = taskView;
         // Assume initial task is for top/left part of screen
 
-        final int[] taskIds = mInitialPosition.mStagePosition == STAGE_POSITION_TOP_OR_LEFT
+//<<<<<<< HEAD
+//        final int[] taskIds = mInitialPosition.stagePosition == STAGE_POSITION_TOP_OR_LEFT
+//=======
+        final int[] taskIds = mStagePosition == STAGE_POSITION_TOP_OR_LEFT
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
                 ? new int[]{mInitialTaskView.getTask().key.id, taskView.getTask().key.id}
                 : new int[]{taskView.getTask().key.id, mInitialTaskView.getTask().key.id};
         if (TaskAnimationManager.ENABLE_SHELL_TRANSITIONS) {
@@ -113,7 +116,11 @@
             DeviceProfile deviceProfile) {
         InsettableFrameLayout.LayoutParams params =
                 new InsettableFrameLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT);
-        boolean topLeftPosition = mInitialPosition.mStagePosition == STAGE_POSITION_TOP_OR_LEFT;
+//<<<<<<< HEAD
+//        boolean topLeftPosition = mInitialPosition.stagePosition == STAGE_POSITION_TOP_OR_LEFT;
+//=======
+        boolean topLeftPosition = mStagePosition == STAGE_POSITION_TOP_OR_LEFT;
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
         if (deviceProfile.isLandscape) {
             params.width = (int) resources.getDimension(R.dimen.split_placeholder_size);
             params.gravity = topLeftPosition ? Gravity.START : Gravity.END;
@@ -125,9 +132,8 @@
         return params;
     }
 
-    @Nullable
-    public SplitPositionOption getActiveSplitPositionOption() {
-        return mInitialPosition;
+    public @StagePosition int getActiveSplitStagePosition() {
+        return mStagePosition;
     }
 
     /**
@@ -189,7 +195,7 @@
     public void resetState() {
         mInitialTaskView = null;
         mSecondTaskView = null;
-        mInitialPosition = null;
+        mStagePosition = SplitConfigurationOptions.STAGE_POSITION_UNDEFINED;
         mInitialBounds = null;
     }
 
diff --git a/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java b/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
index 7b1c62e..9960fd3 100644
--- a/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
+++ b/quickstep/src/com/android/quickstep/util/TaskViewSimulator.java
@@ -145,8 +145,9 @@
             // The task rect changes according to the staged split task sizes, but recents
             // fullscreen scale and pivot remains the same since the task fits into the existing
             // sized task space bounds
-            mSizeStrategy.calculateStagedSplitTaskSize(mContext, mDp, mTaskRect, mStagedSplitBounds,
-                    mStagePosition);
+            mSizeStrategy.calculateTaskSize(mContext, mDp, mTaskRect);
+            mOrientationState.getOrientationHandler()
+                    .setSplitTaskSwipeRect(mDp, mTaskRect, mStagedSplitBounds, mStagePosition);
         } else {
             mTaskRect.set(fullTaskSize);
         }
@@ -175,7 +176,7 @@
             mStagePosition = STAGE_POSITION_UNDEFINED;
             return;
         }
-        mStagePosition = mThumbnailPosition.equals(splitInfo.mLeftTopBounds) ?
+        mStagePosition = mThumbnailPosition.equals(splitInfo.leftTopBounds) ?
                 STAGE_POSITION_TOP_OR_LEFT :
                 STAGE_POSITION_BOTTOM_OR_RIGHT;
     }
@@ -277,13 +278,9 @@
             getFullScreenScale();
             mThumbnailData.rotation = mOrientationState.getDisplayRotation();
 
-            // TODO(b/195145340) handle non 50-50 split scenarios
             if (mStagedSplitBounds != null) {
-                if (mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
-                    // The preview set is for the bottom/right, inset by top/left task
-                    mSplitOffset.y = mStagedSplitBounds.mLeftTopBounds.height() +
-                        mStagedSplitBounds.mDividerBounds.height() / 2;
-                }
+                mOrientationState.getOrientationHandler().setLeashSplitOffset(mSplitOffset, mDp,
+                        mStagedSplitBounds, mStagePosition);
             }
 
             // mIsRecentsRtl is the inverse of TaskView RTL.
@@ -331,7 +328,7 @@
         applyWindowToHomeRotation(mMatrix);
 
         // Move lower/right split window into correct position
-        mMatrix.postTranslate(0, mSplitOffset.y);
+        mMatrix.postTranslate(mSplitOffset.x, mSplitOffset.y);
 
         // Crop rect is the inverse of thumbnail matrix
         mTempRectF.set(-insets.left, -insets.top,
diff --git a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
index cd20f4b..1bc7c75 100644
--- a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
+++ b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
@@ -1,13 +1,10 @@
 package com.android.quickstep.views;
 
-import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
-
 import android.content.Context;
 import android.util.AttributeSet;
-import android.view.ViewGroup;
 
-import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
+import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.TaskThumbnailCache;
 import com.android.quickstep.util.CancellableTask;
@@ -48,13 +45,14 @@
         mSnapshotView2 = findViewById(R.id.bottomright_snapshot);
     }
 
-    public void bind(Task primary, Task secondary, RecentsOrientedState orientedState) {
+    public void bind(Task primary, Task secondary, RecentsOrientedState orientedState,
+            SplitConfigurationOptions.StagedSplitBounds splitBoundsConfig) {
         super.bind(primary, orientedState);
         mSecondaryTask = secondary;
         mTaskIdContainer[1] = secondary.key.id;
         mTaskIdAttributeContainer[1] = new TaskIdAttributeContainer(secondary, mSnapshotView2);
         mSnapshotView2.bind(secondary);
-        adjustThumbnailBoundsForSplit();
+        adjustThumbnailBoundsForSplit(splitBoundsConfig, orientedState);
     }
 
     @Override
@@ -108,30 +106,15 @@
         mSnapshotView2.setOverlayEnabled(overlayEnabled);
     }
 
-    private void adjustThumbnailBoundsForSplit() {
-        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
-        ViewGroup.LayoutParams primaryLp = mSnapshotView.getLayoutParams();
-        primaryLp.width = mSecondaryTask == null ?
-                MATCH_PARENT :
-                getWidth();
-        int spaceAboveSnapshot = deviceProfile.overviewTaskThumbnailTopMarginPx;
-        // TODO get divider height
-        int dividerBar = 20;
-        primaryLp.height = mSecondaryTask == null ?
-                MATCH_PARENT :
-                (getHeight() - spaceAboveSnapshot - dividerBar) / 2;
-        mSnapshotView.setLayoutParams(primaryLp);
-
-        if (mSecondaryTask == null) {
-            mSnapshotView2.setVisibility(GONE);
+    private void adjustThumbnailBoundsForSplit(
+            SplitConfigurationOptions.StagedSplitBounds splitBoundsConfig,
+            RecentsOrientedState orientedState) {
+        if (splitBoundsConfig == null) {
             return;
         }
 
-        mSnapshotView2.setVisibility(VISIBLE);
-        ViewGroup.LayoutParams secondaryLp = mSnapshotView2.getLayoutParams();
-        secondaryLp.width = getWidth();
-        secondaryLp.height = primaryLp.height;
-        mSnapshotView2.setLayoutParams(secondaryLp);
-        mSnapshotView2.setTranslationY(primaryLp.height + spaceAboveSnapshot + dividerBar);
+        orientedState.getOrientationHandler().setGroupedTaskViewThumbnailBounds(
+                mSnapshotView, mSnapshotView2, this, splitBoundsConfig,
+                mActivity.getDeviceProfile());
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
index 6b2d19c..ddb1fca 100644
--- a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -245,8 +245,8 @@
 
     @Override
     public void initiateSplitSelect(TaskView taskView,
-            SplitConfigurationOptions.SplitPositionOption splitPositionOption) {
-        super.initiateSplitSelect(taskView, splitPositionOption);
+            @SplitConfigurationOptions.StagePosition int stagePosition) {
+        super.initiateSplitSelect(taskView, stagePosition);
         mActivity.getStateManager().goToState(LauncherState.OVERVIEW_SPLIT_SELECT);
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
index a2d2179..5d1c202 100644
--- a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
+++ b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
@@ -79,6 +79,7 @@
     private static final int INDEX_SCROLL_ALPHA = 4;
 
     private final MultiValueAlpha mMultiValueAlpha;
+    private View mSplitButton;
 
     @ActionsHiddenFlags
     private int mHiddenFlags;
@@ -110,6 +111,8 @@
         View share = findViewById(R.id.action_share);
         share.setOnClickListener(this);
         findViewById(R.id.action_screenshot).setOnClickListener(this);
+        mSplitButton = findViewById(R.id.action_split);
+        mSplitButton.setOnClickListener(this);
         if (ENABLE_OVERVIEW_SHARE.get()) {
             share.setVisibility(VISIBLE);
             findViewById(R.id.oav_three_button_space).setVisibility(VISIBLE);
@@ -135,6 +138,8 @@
             mCallbacks.onShare();
         } else if (id == R.id.action_screenshot) {
             mCallbacks.onScreenshot();
+        } else if (id == R.id.action_split) {
+            mCallbacks.onSplit();
         }
     }
 
@@ -218,6 +223,16 @@
         mDp = dp;
         updateVerticalMargin(SysUINavigationMode.getMode(getContext()));
         requestLayout();
+        setSplitButtonVisible(mDp.isTablet);
+    }
+
+    public void setSplitButtonVisible(boolean visible) {
+        if (mSplitButton == null) {
+            return;
+        }
+
+        mSplitButton.setVisibility(visible ? VISIBLE : GONE);
+        findViewById(R.id.action_split_space).setVisibility(visible ? VISIBLE : GONE);
     }
 
     /** Get the top margin associated with the action buttons in Overview. */
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 2a19ca2..646312e 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -133,7 +133,7 @@
 import com.android.launcher3.util.ResourceBasedOverride.Overrides;
 import com.android.launcher3.util.RunnableList;
 import com.android.launcher3.util.SplitConfigurationOptions;
-import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.TranslateEdgeEffect;
 import com.android.launcher3.util.ViewPool;
@@ -575,6 +575,7 @@
      */
     private TaskView mSplitHiddenTaskView;
     private TaskView mSecondSplitHiddenTaskView;
+    private SplitConfigurationOptions.StagedSplitBounds mSplitBoundsConfig;
 
     /**
      * Keeps track of the index of the TaskView that split screen was initialized with so we know
@@ -1314,7 +1315,8 @@
                     taskDataIndex--;
                     leftTop = tasks.get(taskDataIndex);
                 }
-                ((GroupedTaskView) taskView).bind(leftTop, rightBottom, mOrientationState);
+                ((GroupedTaskView) taskView).bind(leftTop, rightBottom, mOrientationState,
+                        mSplitBoundsConfig);
             } else {
                 taskView.bind(task, mOrientationState);
             }
@@ -2087,8 +2089,11 @@
                         Task.from(new TaskKey(secondaryTaskInfo), secondaryTaskInfo, false)
                 };
                 addView(taskView, mTaskViewStartIndex);
+                // When we create a placeholder task view mSplitBoundsConfig will be null, but with
+                // the actual app running we won't need to show the thumbnail until all the tasks
+                // load later anyways
                 ((GroupedTaskView)taskView).bind(mTmpRunningTasks[0], mTmpRunningTasks[1],
-                        mOrientationState);
+                        mOrientationState, mSplitBoundsConfig);
             } else {
                 taskView = getTaskViewFromPool(false);
                 addView(taskView, mTaskViewStartIndex);
@@ -2567,8 +2572,8 @@
     private void createInitialSplitSelectAnimation(PendingAnimation anim) {
         float placeholderHeight = getResources().getDimension(R.dimen.split_placeholder_size);
         mOrientationHandler.getInitialSplitPlaceholderBounds((int) placeholderHeight,
-                        mActivity.getDeviceProfile(),
-                mSplitSelectStateController.getActiveSplitPositionOption(), mTempRect);
+                mActivity.getDeviceProfile(),
+                mSplitSelectStateController.getActiveSplitStagePosition(), mTempRect);
 
         RectF startingTaskRect = new RectF();
         mSplitHiddenTaskView.setVisibility(INVISIBLE);
@@ -2577,6 +2582,7 @@
         mFirstFloatingTaskView.setAlpha(1);
         mFirstFloatingTaskView.addAnimation(anim, startingTaskRect,
                 mTempRect, mSplitHiddenTaskView, true /*fadeWithThumbnail*/);
+        anim.addEndListener(aBoolean -> mActionsView.setSplitButtonVisible(false));
     }
 
     /**
@@ -3009,8 +3015,7 @@
      * @return {@code true} if one of the task thumbnails would intersect/overlap with the
      *         {@link #mFirstFloatingTaskView}
      */
-    public boolean shouldShiftThumbnailsForSplitSelect(@SplitConfigurationOptions.StagePosition
-            int stagePosition) {
+    public boolean shouldShiftThumbnailsForSplitSelect(@StagePosition int stagePosition) {
         if (!mActivity.getDeviceProfile().isTablet) {
             // Never enough space on phones
             return true;
@@ -3542,12 +3547,17 @@
         }
     }
 
-    public void initiateSplitSelect(TaskView taskView, SplitPositionOption splitPositionOption) {
+    public void initiateSplitSelect(TaskView taskView) {
+        int defaultSplitPosition = mOrientationHandler
+                .getDefaultSplitPosition(mActivity.getDeviceProfile());
+        initiateSplitSelect(taskView, defaultSplitPosition);
+    }
+
+    public void initiateSplitSelect(TaskView taskView, @StagePosition int stagePosition) {
         mSplitHiddenTaskView = taskView;
         Rect initialBounds = new Rect(taskView.getLeft(), taskView.getTop(), taskView.getRight(),
                 taskView.getBottom());
-        mSplitSelectStateController.setInitialTaskSelect(taskView,
-                splitPositionOption, initialBounds);
+        mSplitSelectStateController.setInitialTaskSelect(taskView, stagePosition, initialBounds);
         mSplitHiddenTaskViewIndex = indexOfChild(taskView);
         if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
             finishRecentsAnimation(true, null);
@@ -3573,7 +3583,7 @@
                 .getDimensionPixelSize(R.dimen.multi_window_task_divider_size) / 2;
         mOrientationHandler.getFinalSplitPlaceholderBounds(halfDividerSize,
                 mActivity.getDeviceProfile(),
-                mSplitSelectStateController.getActiveSplitPositionOption(), firstTaskEndingBounds,
+                mSplitSelectStateController.getActiveSplitStagePosition(), firstTaskEndingBounds,
                 secondTaskEndingBounds);
 
         mFirstFloatingTaskView.getBoundsOnScreen(firstTaskStartingBounds);
@@ -3598,7 +3608,7 @@
 
     public PendingAnimation cancelSplitSelect(boolean animate) {
         SplitSelectStateController splitController = mSplitSelectStateController;
-        SplitPositionOption splitOption = splitController.getActiveSplitPositionOption();
+        @StagePosition int stagePosition = splitController.getActiveSplitStagePosition();
         Rect initialBounds = splitController.getInitialBounds();
         splitController.resetState();
         int duration = mActivity.getStateManager().getState().getTransitionDuration(getContext());
@@ -3624,7 +3634,7 @@
             if (child == mSplitHiddenTaskView) {
                 TaskView taskView = (TaskView) child;
 
-                int dir = mOrientationHandler.getSplitTaskViewDismissDirection(splitOption,
+                int dir = mOrientationHandler.getSplitTaskViewDismissDirection(stagePosition,
                         mActivity.getDeviceProfile());
                 FloatProperty<TaskView> dismissingTaskViewTranslate;
                 Rect hiddenBounds = new Rect(taskView.getLeft(), taskView.getTop(),
@@ -3696,10 +3706,10 @@
         return pendingAnim;
     }
 
+    /** TODO(b/181707736) More gracefully handle exiting split selection state */
     private void resetFromSplitSelectionState() {
         mSplitHiddenTaskView.setTranslationY(0);
         if (!showAsGrid()) {
-            // TODO(b/186800707)
             int pageToSnapTo = mCurrentPage;
             if (mSplitHiddenTaskViewIndex <= pageToSnapTo) {
                 pageToSnapTo += 1;
@@ -3723,6 +3733,7 @@
             mSecondSplitHiddenTaskView.setVisibility(VISIBLE);
             mSecondSplitHiddenTaskView = null;
         }
+        mActionsView.setSplitButtonVisible(true);
     }
 
     private void updateDeadZoneRects() {
@@ -4038,12 +4049,13 @@
             mRemoteTargetHandles[1] = new RemoteTargetHandle(secondaryTvs, new TransformParams());
             RemoteAnimationTargetCompat primaryTaskTarget = recentsAnimationTargets.apps[0];
             RemoteAnimationTargetCompat secondaryTaskTarget = recentsAnimationTargets.apps[1];
-            SplitConfigurationOptions.StagedSplitBounds
-                    info = new SplitConfigurationOptions.StagedSplitBounds(
+            mSplitBoundsConfig = new SplitConfigurationOptions.StagedSplitBounds(
                     primaryTaskTarget.screenSpaceBounds,
                     secondaryTaskTarget.screenSpaceBounds, dividerTarget.screenSpaceBounds);
-            mRemoteTargetHandles[0].mTaskViewSimulator.setPreview(primaryTaskTarget, info);
-            mRemoteTargetHandles[1].mTaskViewSimulator.setPreview(secondaryTaskTarget, info);
+            mRemoteTargetHandles[0].mTaskViewSimulator.setPreview(primaryTaskTarget,
+                    mSplitBoundsConfig);
+            mRemoteTargetHandles[1].mTaskViewSimulator.setPreview(secondaryTaskTarget,
+                    mSplitBoundsConfig);
             RemoteAnimationTargets rats = new RemoteAnimationTargets(
                     new RemoteAnimationTargetCompat[]{primaryTaskTarget},
                     recentsAnimationTargets.wallpapers, recentsAnimationTargets.nonApps,
@@ -4084,6 +4096,8 @@
 
     public void finishRecentsAnimation(boolean toRecents, boolean shouldPip,
             Runnable onFinishComplete) {
+        // TODO(b/197232424#comment#10) Move this back into onRecentsAnimationComplete(). Maybe?
+        mRemoteTargetHandles = null;
         if (!toRecents && ENABLE_QUICKSTEP_LIVE_TILE.get()) {
             // Reset the minimized state since we force-toggled the minimized state when entering
             // overview, but never actually finished the recents animation.  This is a catch all for
@@ -4131,7 +4145,6 @@
         setCurrentTask(-1);
         mRecentsAnimationController = null;
         executeSideTaskLaunchCallback();
-        mRemoteTargetHandles = null;
     }
 
     public void setDisallowScrollToClearAll(boolean disallowScrollToClearAll) {
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index 5986649..bfe6ca4 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -1514,7 +1514,7 @@
 
     public void initiateSplitSelect(SplitPositionOption splitPositionOption) {
         AbstractFloatingView.closeOpenViews(mActivity, false, TYPE_TASK_MENU);
-        getRecentsView().initiateSplitSelect(this, splitPositionOption);
+        getRecentsView().initiateSplitSelect(this, splitPositionOption.stagePosition);
     }
 
     /**
diff --git a/res/color-v31/overview_scrim_dark.xml b/res/color-v31/overview_scrim_dark.xml
index b8ed774..85ede9a 100644
--- a/res/color-v31/overview_scrim_dark.xml
+++ b/res/color-v31/overview_scrim_dark.xml
@@ -14,5 +14,5 @@
      limitations under the License.
 -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-  <item android:color="@android:color/system_neutral1_800" />
+  <item android:color="@android:color/system_neutral2_500" android:lStar="35" />
 </selector>
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index 353e52b..02ec5e8 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -256,9 +256,27 @@
 
     @UiThread
     public void applyFromWorkspaceItem(WorkspaceItemInfo info) {
+        applyFromWorkspaceItem(info, /* animate = */ false, /* staggerIndex = */ 0);
+    }
+
+    @UiThread
+    public void applyFromWorkspaceItem(WorkspaceItemInfo info, boolean animate, int staggerIndex) {
         applyFromWorkspaceItem(info, false);
     }
 
+    /**
+     * Returns whether the newInfo differs from the current getTag().
+     */
+    public boolean shouldAnimateIconChange(WorkspaceItemInfo newInfo) {
+        WorkspaceItemInfo oldInfo = getTag() instanceof WorkspaceItemInfo
+                ? (WorkspaceItemInfo) getTag()
+                : null;
+        boolean changedIcons = oldInfo != null && oldInfo.getTargetComponent() != null
+                && newInfo.getTargetComponent() != null
+                && !oldInfo.getTargetComponent().equals(newInfo.getTargetComponent());
+        return changedIcons && isShown();
+    }
+
     @Override
     public void setAccessibilityDelegate(AccessibilityDelegate delegate) {
         if (delegate instanceof LauncherAccessibilityDelegate) {
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 3010be1..b7d0481 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -248,7 +248,8 @@
         // Tablet UI does not support emulated landscape.
         isTablet = allowRotation && info.isTablet(windowBounds);
         isPhone = !isTablet;
-        isTwoPanels = isTablet && useTwoPanels;
+        isTwoPanels = isTablet && useTwoPanels
+                && (isLandscape || FeatureFlags.ENABLE_TWO_PANEL_HOME_IN_PORTRAIT.get());
 
         aspectRatio = ((float) Math.max(widthPx, heightPx)) / Math.min(widthPx, heightPx);
         boolean isTallDevice = Float.compare(aspectRatio, TALL_DEVICE_ASPECT_RATIO_THRESHOLD) >= 0;
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 4d5cc5e..6ea7b17 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2186,6 +2186,24 @@
     }
 
     private void bindAddScreens(IntArray orderedScreenIds) {
+        if (mDeviceProfile.isTwoPanels) {
+            // Some empty pages might have been removed while the phone was in a single panel
+            // mode, so we want to add those empty pages back.
+            IntSet screenIds = IntSet.wrap(orderedScreenIds);
+            for (int i = 0; i < orderedScreenIds.size(); i++) {
+                int screenId = orderedScreenIds.get(i);
+                // Don't add the page pair if the page is the last one and if the pair is on the
+                // right, because that would cause a bug when adding new pages.
+                // TODO: (b/196376162) remove this when the new screen id logic is fixed for two
+                //  panel in Workspace::commitExtraEmptyScreen
+                if (i == orderedScreenIds.size() - 1 && screenId % 2 == 0) {
+                    continue;
+                }
+                screenIds.add(mWorkspace.getPagePair(screenId));
+            }
+            orderedScreenIds = screenIds.getArray();
+        }
+
         int count = orderedScreenIds.size();
         for (int i = 0; i < count; i++) {
             int screenId = orderedScreenIds.get(i);
@@ -2193,7 +2211,6 @@
                 // No need to bind the first screen, as its always bound.
                 continue;
             }
-
             mWorkspace.insertNewWorkspaceScreenBeforeEmptyScreen(screenId);
         }
     }
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 38beeea..94ec903 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -123,6 +123,7 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Iterator;
 import java.util.List;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
@@ -333,7 +334,8 @@
         int paddingBottom = grid.cellLayoutBottomPaddingPx;
 
         int panelCount = getPanelCount();
-        for (int i = mWorkspaceScreens.size() - 1; i >= 0; i--) {
+        int numberOfScreens = mScreenOrder.size();
+        for (int i = 0; i < numberOfScreens; i++) {
             int paddingLeft = paddingLeftRight;
             int paddingRight = paddingLeftRight;
             if (panelCount > 1) {
@@ -348,7 +350,9 @@
                     paddingRight = 0;
                 }
             }
-            mWorkspaceScreens.valueAt(i).setPadding(paddingLeft, 0, paddingRight, paddingBottom);
+            // SparseArrayMap doesn't keep the order
+            mWorkspaceScreens.get(mScreenOrder.get(i))
+                    .setPadding(paddingLeft, 0, paddingRight, paddingBottom);
         }
     }
 
@@ -797,6 +801,21 @@
         return mScreenOrder;
     }
 
+    /**
+     * Returns the page that is shown together with the given page when two panel is enabled.
+     * @throws IllegalStateException if called while two panel home isn't enabled.
+     */
+    public int getPagePair(int page) {
+        if (!isTwoPanelEnabled()) {
+            throw new IllegalStateException("Two panel home isn't enabled.");
+        }
+        if (page % 2 == 0) {
+            return page + 1;
+        } else {
+            return page - 1;
+        }
+    }
+
     public void stripEmptyScreens() {
         if (mLauncher.isWorkspaceLoading()) {
             // Don't strip empty screens if the workspace is still loading.
@@ -822,6 +841,22 @@
             }
         }
 
+        // When two panel home is enabled we only remove an empty page if both visible pages are
+        // empty.
+        if (isTwoPanelEnabled()) {
+            // We go through all the pages that were marked as removable and check their page pair
+            Iterator<Integer> removeScreensIterator = removeScreens.iterator();
+            while (removeScreensIterator.hasNext()) {
+                int pageToRemove = removeScreensIterator.next();
+                int pagePair = getPagePair(pageToRemove);
+                if (!removeScreens.contains(pagePair)) {
+                    // The page pair isn't empty so we want to remove the current page from the
+                    // removable pages' collection
+                    removeScreensIterator.remove();
+                }
+            }
+        }
+
         // We enforce at least one page to add new items to. In the case that we remove the last
         // such screen, we convert the last screen to the empty screen
         int minScreens = 1;
diff --git a/src/com/android/launcher3/WorkspaceLayoutManager.java b/src/com/android/launcher3/WorkspaceLayoutManager.java
index d6302ce..44a5536 100644
--- a/src/com/android/launcher3/WorkspaceLayoutManager.java
+++ b/src/com/android/launcher3/WorkspaceLayoutManager.java
@@ -32,6 +32,8 @@
     int EXTRA_EMPTY_SCREEN_ID = -201;
     // The is the first screen. It is always present, even if its empty.
     int FIRST_SCREEN_ID = 0;
+    // This is the second page. On two panel home it is always present, even if its empty.
+    int SECOND_SCREEN_ID = 1;
 
     /**
      * At bind time, we use the rank (screenId) to compute x and y for hotseat items.
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 38a957d..74c7310 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -230,6 +230,10 @@
             "ENABLE_TWO_PANEL_HOME", true,
             "Uses two panel on home screen. Only applicable on large screen devices.");
 
+    public static final BooleanFlag ENABLE_TWO_PANEL_HOME_IN_PORTRAIT = getDebugFlag(
+            "ENABLE_TWO_PANEL_HOME_IN_PORTRAIT", true,
+            "Uses two panel on home screen in portrait if ENABLE_TWO_PANEL_HOME is enabled.");
+
     public static final BooleanFlag ENABLE_SCRIM_FOR_APP_LAUNCH = getDebugFlag(
             "ENABLE_SCRIM_FOR_APP_LAUNCH", false,
             "Enables scrim during app launch animation.");
diff --git a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
index a96de31..94c578e 100644
--- a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
+++ b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
@@ -65,6 +65,7 @@
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.Workspace;
 import com.android.launcher3.WorkspaceLayoutManager;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.folder.FolderIcon;
@@ -279,7 +280,7 @@
                     mDp.workspacePadding.top,
                     mDp.workspacePadding.right + mDp.cellLayoutPaddingLeftRightPx,
                     mDp.workspacePadding.bottom);
-            mWorkspaceScreens.put(PreviewSurfaceRenderer.SECOND_SCREEN_ID, rightPanel);
+            mWorkspaceScreens.put(Workspace.SECOND_SCREEN_ID, rightPanel);
         }
 
         if (Utilities.ATLEAST_S) {
diff --git a/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java b/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java
index af006d6..f4d1e61 100644
--- a/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java
+++ b/src/com/android/launcher3/graphics/PreviewSurfaceRenderer.java
@@ -66,9 +66,6 @@
 
     private static final int FADE_IN_ANIMATION_DURATION = 200;
 
-    // The is the second screen. It is always present in two panel, even if its empty.
-    static final int SECOND_SCREEN_ID = 1;
-
     private static final String KEY_HOST_TOKEN = "host_token";
     private static final String KEY_VIEW_WIDTH = "width";
     private static final String KEY_VIEW_HEIGHT = "height";
@@ -172,7 +169,7 @@
                             + LauncherSettings.Favorites.CONTAINER_HOTSEAT;
                     if (deviceProfile.isTwoPanels) {
                         query += " or " + LauncherSettings.Favorites.SCREEN + " = "
-                                + SECOND_SCREEN_ID;
+                                + Workspace.SECOND_SCREEN_ID;
                     }
                     loadWorkspace(new ArrayList<>(), LauncherSettings.Favorites.PREVIEW_CONTENT_URI,
                             query);
diff --git a/src/com/android/launcher3/model/AddWorkspaceItemsTask.java b/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
index a13fa55..fea15c4 100644
--- a/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
+++ b/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
@@ -16,6 +16,7 @@
 package com.android.launcher3.model;
 
 import static com.android.launcher3.WorkspaceLayoutManager.FIRST_SCREEN_ID;
+import static com.android.launcher3.WorkspaceLayoutManager.SECOND_SCREEN_ID;
 
 import android.content.Intent;
 import android.content.pm.LauncherActivityInfo;
@@ -299,6 +300,11 @@
         IntSet screensToExclude = new IntSet();
         if (FeatureFlags.QSB_ON_FIRST_SCREEN) {
             screensToExclude.add(FIRST_SCREEN_ID);
+
+            // On split display we don't want to add the new items onto the second screen.
+            if (app.getInvariantDeviceProfile().isSplitDisplay) {
+                screensToExclude.add(SECOND_SCREEN_ID);
+            }
         }
 
         for (int screen = 0; screen < screenCount; screen++) {
diff --git a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
index 816e5dc..17a00e2 100644
--- a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
+++ b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
@@ -26,6 +26,7 @@
 import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_TYPE_MAIN;
 
 import android.content.res.Resources;
+import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.RectF;
@@ -35,13 +36,16 @@
 import android.view.Surface;
 import android.view.VelocityTracker;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.LinearLayout;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
 import com.android.launcher3.views.BaseDragLayer;
 
 import java.util.Collections;
@@ -162,16 +166,24 @@
     }
 
     @Override
-    public int getSplitTaskViewDismissDirection(SplitPositionOption splitPosition,
+    public int getSplitTaskViewDismissDirection(@StagePosition int stagePosition,
             DeviceProfile dp) {
         // Don't use device profile here because we know we're in fake landscape, only split option
         // available is top/left
-        if (splitPosition.mStagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+//<<<<<<< HEAD
+//        if (splitPosition.stagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+//            // Top (visually left) side
+//            return SPLIT_TRANSLATE_PRIMARY_NEGATIVE;
+//        }
+//        throw new IllegalStateException("Invalid split stage position: " +
+//                splitPosition.stagePosition);
+//=======
+        if (stagePosition == STAGE_POSITION_TOP_OR_LEFT) {
             // Top (visually left) side
             return SPLIT_TRANSLATE_PRIMARY_NEGATIVE;
         }
-        throw new IllegalStateException("Invalid split stage position: " +
-                splitPosition.mStagePosition);
+        throw new IllegalStateException("Invalid split stage position: " + stagePosition);
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
     }
 
     @Override
@@ -364,7 +376,7 @@
 
     @Override
     public void getInitialSplitPlaceholderBounds(int placeholderHeight, DeviceProfile dp,
-            SplitPositionOption splitPositionOption, Rect out) {
+            @StagePosition int stagePosition, Rect out) {
         // In fake land/seascape, the placeholder always needs to go to the "top" of the device,
         // which is the same bounds as 0 rotation.
         int width = dp.widthPx;
@@ -373,7 +385,7 @@
 
     @Override
     public void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
-            SplitPositionOption initialSplitOption, Rect out1, Rect out2) {
+            @StagePosition int stagePosition, Rect out1, Rect out2) {
         // In fake land/seascape, the window bounds are always top and bottom half
         int screenHeight = dp.heightPx;
         int screenWidth = dp.widthPx;
@@ -382,6 +394,55 @@
     }
 
     @Override
+//<<<<<<< HEAD
+    public void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo, int desiredStagePosition) {
+        float diff;
+        if (desiredStagePosition == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
+            diff = outRect.height() * (1f - splitInfo.leftTaskPercent);
+            outRect.bottom -= diff;
+        } else {
+            diff = outRect.height() * splitInfo.leftTaskPercent;
+            outRect.top += diff;
+        }
+    }
+
+    @Override
+    public void setLeashSplitOffset(Point splitOffset, DeviceProfile dp,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo, int desiredStagePosition) {
+        if (desiredStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+            // The preview set is for the bottom/right, inset by top/left task
+            splitOffset.x = splitInfo.leftTopBounds.width() + splitInfo.dividerBounds.width() / 2;
+        }
+    }
+
+    @Override
+    public void setGroupedTaskViewThumbnailBounds(View mSnapshotView, View mSnapshotView2,
+            View taskParent, SplitConfigurationOptions.StagedSplitBounds splitBoundsConfig,
+            DeviceProfile dp) {
+        int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
+        int totalThumbnailHeight = taskParent.getHeight() - spaceAboveSnapshot;
+        int totalThumbnailWidth = taskParent.getWidth();
+        int dividerBar = splitBoundsConfig.dividerBounds.width() / 2;
+        ViewGroup.LayoutParams primaryLp = mSnapshotView.getLayoutParams();
+        ViewGroup.LayoutParams secondaryLp = mSnapshotView2.getLayoutParams();
+
+        primaryLp.width = totalThumbnailWidth;
+        primaryLp.height = (int) (totalThumbnailHeight * splitBoundsConfig.leftTaskPercent);
+
+        secondaryLp.width = totalThumbnailWidth;
+        secondaryLp.height = totalThumbnailHeight - primaryLp.height - dividerBar;
+        mSnapshotView2.setTranslationY(primaryLp.height + spaceAboveSnapshot + dividerBar);
+    }
+
+//=======
+    @Override
+    public int getDefaultSplitPosition(DeviceProfile deviceProfile) {
+        throw new IllegalStateException("Default position not available in fake landscape");
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
+    }
+
+    @Override
     public FloatProperty getSplitSelectTaskOffset(FloatProperty primary, FloatProperty secondary,
             DeviceProfile deviceProfile) {
         return primary;
diff --git a/src/com/android/launcher3/touch/PagedOrientationHandler.java b/src/com/android/launcher3/touch/PagedOrientationHandler.java
index dae2dde..b34a81e 100644
--- a/src/com/android/launcher3/touch/PagedOrientationHandler.java
+++ b/src/com/android/launcher3/touch/PagedOrientationHandler.java
@@ -19,6 +19,7 @@
 import android.content.res.Resources;
 import android.graphics.Canvas;
 import android.graphics.Matrix;
+import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.RectF;
@@ -31,6 +32,7 @@
 import android.widget.LinearLayout;
 
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
 import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
 
@@ -78,11 +80,11 @@
     FloatProperty<View> getSecondaryViewTranslate();
 
     /**
-     * @param splitPosition The position where the view to be split will go
+     * @param stagePosition The position where the view to be split will go
      * @return {@link #SPLIT_TRANSLATE_*} constants to indicate which direction the
      * dismissal should happen
      */
-    int getSplitTaskViewDismissDirection(SplitPositionOption splitPosition, DeviceProfile dp);
+    int getSplitTaskViewDismissDirection(@StagePosition int stagePosition, DeviceProfile dp);
     int getPrimaryScroll(View view);
     float getPrimaryScale(View view);
     int getChildStart(View view);
@@ -120,18 +122,48 @@
      * @param splitholderSize height of placeholder view in portrait, width in landscape
      */
     void getInitialSplitPlaceholderBounds(int splitholderSize, DeviceProfile dp,
-            SplitPositionOption splitPositionOption, Rect out);
+            @StagePosition int stagePosition, Rect out);
 
     /**
      * @param splitDividerSize height of split screen drag handle in portrait, width in landscape
-     * @param initialSplitOption the split position option (top/left, bottom/right) of the first
+     * @param stagePosition the split position option (top/left, bottom/right) of the first
      *                           task selected for entering split
      * @param out1 the bounds for where the first selected app will be
      * @param out2 the bounds for where the second selected app will be, complimentary to
      *             {@param out1} based on {@param initialSplitOption}
      */
     void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
-            SplitPositionOption initialSplitOption, Rect out1, Rect out2);
+            @StagePosition int stagePosition, Rect out1, Rect out2);
+
+    int getDefaultSplitPosition(DeviceProfile deviceProfile);
+
+    /**
+     * @param outRect This is expected to be the rect that has the dimensions for a non-split,
+     *                fullscreen task in overview. This will directly be modified.
+     * @param desiredStagePosition Which stage position (topLeft/rightBottom) we want to resize
+     *                           outRect for
+     */
+    void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo,
+            @SplitConfigurationOptions.StagePosition int desiredStagePosition);
+
+    /**
+     * It's important to note that {@link #setSplitTaskSwipeRect(DeviceProfile, Rect,
+     * SplitConfigurationOptions.StagedSplitBounds, int)} above operates on the outRect based on
+     * launcher's coordinate system, meaning it will treat the outRect as portrait if home rotation
+     * is not allowed.
+     *
+     * However, here the splitOffset is from perspective of TaskViewSimulator, which is in display
+     * orientation coordinates. So, for example, for the fake landscape scenario, even though
+     * launcher is portrait, we inset the bottom/right task by an X coordinate instead of the
+     * usual Y
+     */
+    void setLeashSplitOffset(Point splitOffset, DeviceProfile dp,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo,
+            @SplitConfigurationOptions.StagePosition int desiredStagePosition);
+
+    void setGroupedTaskViewThumbnailBounds(View mSnapshot1, View mSnapshot2, View taskParent,
+            SplitConfigurationOptions.StagedSplitBounds splitBoundsConfig, DeviceProfile dp);
 
     // Overview TaskMenuView methods
     float getTaskMenuX(float x, View thumbnailView, int overScroll);
diff --git a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
index 1253589..640e6cc 100644
--- a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
+++ b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
@@ -25,6 +25,7 @@
 
 import android.content.res.Resources;
 import android.graphics.Matrix;
+import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.RectF;
@@ -34,13 +35,16 @@
 import android.view.Surface;
 import android.view.VelocityTracker;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.LinearLayout;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
 import com.android.launcher3.views.BaseDragLayer;
 
 import java.util.ArrayList;
@@ -162,9 +166,13 @@
     }
 
     @Override
-    public int getSplitTaskViewDismissDirection(SplitPositionOption splitPosition,
+    public int getSplitTaskViewDismissDirection(@StagePosition int stagePosition,
             DeviceProfile dp) {
-        if (splitPosition.mStagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+//<<<<<<< HEAD
+//        if (splitPosition.stagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+//=======
+        if (stagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
             if (dp.isLandscape) {
                 // Left side
                 return SPLIT_TRANSLATE_PRIMARY_NEGATIVE;
@@ -172,12 +180,20 @@
                 // Top side
                 return SPLIT_TRANSLATE_SECONDARY_NEGATIVE;
             }
-        } else if (splitPosition.mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+//<<<<<<< HEAD
+//        } else if (splitPosition.stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+             // We don't have a bottom option, so should be right
+//            return SPLIT_TRANSLATE_PRIMARY_POSITIVE;
+//        }
+//        throw new IllegalStateException("Invalid split stage position: " +
+//                splitPosition.stagePosition);
+//=======
+        } else if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
             // We don't have a bottom option, so should be right
             return SPLIT_TRANSLATE_PRIMARY_POSITIVE;
         }
-        throw new IllegalStateException("Invalid split stage position: " +
-                splitPosition.mStagePosition);
+        throw new IllegalStateException("Invalid split stage position: " + stagePosition);
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
     }
 
     @Override
@@ -413,7 +429,7 @@
 
     @Override
     public void getInitialSplitPlaceholderBounds(int placeholderHeight, DeviceProfile dp,
-            SplitPositionOption splitPositionOption, Rect out) {
+            @StagePosition int stagePosition, Rect out) {
         int width = dp.widthPx;
         out.set(0, 0, width, placeholderHeight);
         if (!dp.isLandscape) {
@@ -422,7 +438,11 @@
         }
 
         // Now we rotate the portrait rect depending on what side we want pinned
-        boolean pinToRight = splitPositionOption.mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+//<<<<<<< HEAD
+//        boolean pinToRight = splitPositionOption.stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+//=======
+        boolean pinToRight = stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
 
         int screenHeight = dp.heightPx;
         float postRotateScale = (float) screenHeight / width;
@@ -439,7 +459,7 @@
 
     @Override
     public void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
-            SplitPositionOption initialSplitOption, Rect out1, Rect out2) {
+            @StagePosition int stagePosition, Rect out1, Rect out2) {
         int screenHeight = dp.heightPx;
         int screenWidth = dp.widthPx;
         out1.set(0, 0, screenWidth, screenHeight / 2 - splitDividerSize);
@@ -450,7 +470,11 @@
         }
 
         // Now we rotate the portrait rect depending on what side we want pinned
-        boolean pinToRight = initialSplitOption.mStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+//<<<<<<< HEAD
+//        boolean pinToRight = initialSplitOption.stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+//=======
+        boolean pinToRight = stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
         float postRotateScale = (float) screenHeight / screenWidth;
 
         mTmpMatrix.reset();
@@ -468,6 +492,92 @@
     }
 
     @Override
+//<<<<<<< HEAD
+    public void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo, int desiredStagePosition) {
+        boolean isLandscape = dp.isLandscape;
+        float diff;
+        if (desiredStagePosition == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
+            if (isLandscape) {
+                diff = outRect.width() * (1f - splitInfo.leftTaskPercent);
+                outRect.right -= diff;
+            } else {
+                diff = outRect.height() * (1f - splitInfo.topTaskPercent);
+                outRect.bottom -= diff;
+            }
+        } else {
+            if (isLandscape) {
+                diff = outRect.width() * splitInfo.leftTaskPercent;
+                outRect.left += diff;
+            } else {
+                diff = outRect.height() * splitInfo.topTaskPercent;
+                outRect.top += diff;
+            }
+        }
+    }
+
+    @Override
+    public void setLeashSplitOffset(Point splitOffset, DeviceProfile dp,
+            SplitConfigurationOptions.StagedSplitBounds splitInfo, int desiredStagePosition) {
+        if (desiredStagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+            if (dp.isLandscape) {
+                splitOffset.x = splitInfo.leftTopBounds.width() +
+                        splitInfo.dividerBounds.width() / 2;
+            } else {
+                splitOffset.y = splitInfo.leftTopBounds.height() +
+                        splitInfo.dividerBounds.height() / 2;
+            }
+        }
+    }
+
+    @Override
+    public void setGroupedTaskViewThumbnailBounds(View mSnapshotView, View mSnapshotView2,
+            View taskParent, SplitConfigurationOptions.StagedSplitBounds splitBoundsConfig,
+            DeviceProfile dp) {
+        int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
+        int totalThumbnailHeight = taskParent.getHeight() - spaceAboveSnapshot;
+        int totalThumbnailWidth = taskParent.getWidth();
+        int dividerBar = (dp.isLandscape ?
+                splitBoundsConfig.dividerBounds.width() :
+                splitBoundsConfig.dividerBounds.height())
+                / 2;
+        ViewGroup.LayoutParams primaryLp = mSnapshotView.getLayoutParams();
+        ViewGroup.LayoutParams secondaryLp = mSnapshotView2.getLayoutParams();
+
+        if (dp.isLandscape) {
+            primaryLp.height = totalThumbnailHeight;
+            primaryLp.width = (int) (totalThumbnailWidth * splitBoundsConfig.leftTaskPercent);
+
+            secondaryLp.height = totalThumbnailHeight;
+            secondaryLp.width = totalThumbnailWidth - primaryLp.width - dividerBar;
+            mSnapshotView2.setTranslationX(primaryLp.width + dividerBar);
+            mSnapshotView2.setTranslationY(spaceAboveSnapshot);
+        } else {
+            primaryLp.width = totalThumbnailWidth;
+            primaryLp.height = (int) (totalThumbnailHeight * splitBoundsConfig.topTaskPercent);
+
+            secondaryLp.width = totalThumbnailWidth;
+            secondaryLp.height = totalThumbnailHeight - primaryLp.height - dividerBar;
+            mSnapshotView2.setTranslationY(primaryLp.height + spaceAboveSnapshot + dividerBar);
+            mSnapshotView2.setTranslationX(0);
+        }
+    }
+
+//=======
+    @Override
+    public int getDefaultSplitPosition(DeviceProfile deviceProfile) {
+        if (!deviceProfile.isTablet) {
+            throw new IllegalStateException("Default position available only for large screens");
+        }
+        if (deviceProfile.isLandscape) {
+            return STAGE_POSITION_BOTTOM_OR_RIGHT;
+        } else {
+            return STAGE_POSITION_TOP_OR_LEFT;
+//>>>>>>> f6769c8532 (Add Split button in OverviewActions)
+        }
+    }
+
+    @Override
     public FloatProperty getSplitSelectTaskOffset(FloatProperty primary, FloatProperty secondary,
             DeviceProfile dp) {
         if (dp.isLandscape) { // or seascape
diff --git a/src/com/android/launcher3/util/IntArray.java b/src/com/android/launcher3/util/IntArray.java
index e7235e7..1c78795 100644
--- a/src/com/android/launcher3/util/IntArray.java
+++ b/src/com/android/launcher3/util/IntArray.java
@@ -296,7 +296,7 @@
 
         @Override
         public void remove() {
-            throw new UnsupportedOperationException();
+            removeIndex(--mNextIndex);
         }
     }
 }
\ No newline at end of file
diff --git a/src/com/android/launcher3/util/SplitConfigurationOptions.java b/src/com/android/launcher3/util/SplitConfigurationOptions.java
index 1f1db9d..41693de 100644
--- a/src/com/android/launcher3/util/SplitConfigurationOptions.java
+++ b/src/com/android/launcher3/util/SplitConfigurationOptions.java
@@ -69,32 +69,44 @@
     ///////////////////////////////////
 
     public static class SplitPositionOption {
-        public final int mIconResId;
-        public final int mTextResId;
+        public final int iconResId;
+        public final int textResId;
         @StagePosition
-        public final int mStagePosition;
+        public final int stagePosition;
 
         @StageType
         public final int mStageType;
 
         public SplitPositionOption(int iconResId, int textResId, int stagePosition, int stageType) {
-            mIconResId = iconResId;
-            mTextResId = textResId;
-            mStagePosition = stagePosition;
+            this.iconResId = iconResId;
+            this.textResId = textResId;
+            this.stagePosition = stagePosition;
             mStageType = stageType;
         }
     }
 
     public static class StagedSplitBounds {
-        public final Rect mLeftTopBounds;
-        public final Rect mRightBottomBounds;
-        public final Rect mDividerBounds;
+        public final Rect leftTopBounds;
+        public final Rect rightBottomBounds;
+        public final Rect dividerBounds;
+        // This class is orientation-agnostic, so we compute both for later use
+        public final float topTaskPercent;
+        public final float leftTaskPercent;
 
 
         public StagedSplitBounds(Rect leftTopBounds, Rect rightBottomBounds, Rect dividerBounds) {
-            mLeftTopBounds = leftTopBounds;
-            mRightBottomBounds = rightBottomBounds;
-            mDividerBounds = dividerBounds;
+            this.leftTopBounds = leftTopBounds;
+            this.rightBottomBounds = rightBottomBounds;
+            this.dividerBounds = dividerBounds;
+            float totalHeight = this.leftTopBounds.height()
+                    + this.rightBottomBounds.height()
+                    + this.dividerBounds.height();
+            float totalWidth = this.leftTopBounds.width()
+                    + this.rightBottomBounds.width()
+                    + this.dividerBounds.width();
+
+            leftTaskPercent = this.leftTopBounds.width() / totalWidth;
+            topTaskPercent = this.leftTopBounds.height() / totalHeight;
         }
     }
 
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 7c73f2b..f1fe508 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -248,6 +248,8 @@
         if (pm.getComponentEnabledSetting(cn) != COMPONENT_ENABLED_STATE_ENABLED) {
             if (TestHelpers.isInLauncherProcess()) {
                 pm.setComponentEnabledSetting(cn, COMPONENT_ENABLED_STATE_ENABLED, DONT_KILL_APP);
+                // b/195031154
+                SystemClock.sleep(5000);
             } else {
                 try {
                     final int userId = ContextUtils.getUserId(getContext());