diff --git a/quickstep/src/com/android/launcher3/statehandlers/DesktopVisibilityController.java b/quickstep/src/com/android/launcher3/statehandlers/DesktopVisibilityController.java
new file mode 100644
index 0000000..0c8952d
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/statehandlers/DesktopVisibilityController.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.statehandlers;
+
+import android.os.SystemProperties;
+import android.view.View;
+
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.statemanager.StatefulActivity;
+import com.android.launcher3.uioverrides.QuickstepLauncher;
+
+/**
+ * Controls the visibility of the workspace and the resumed / paused state when desktop mode
+ * is enabled.
+ */
+public class DesktopVisibilityController {
+
+    private final Launcher mLauncher;
+
+    private boolean mFreeformTasksVisible;
+    private boolean mInOverviewState;
+
+    public DesktopVisibilityController(Launcher launcher) {
+        mLauncher = launcher;
+    }
+
+    /**
+     * Whether desktop mode is supported.
+     */
+    private boolean isDesktopModeSupported() {
+        return SystemProperties.getBoolean("persist.wm.debug.desktop_mode", false);
+    }
+
+    /**
+     * Whether freeform windows are visible in desktop mode.
+     */
+    public boolean areFreeformTasksVisible() {
+        return mFreeformTasksVisible;
+    }
+
+    /**
+     * Sets whether freeform windows are visible and updates launcher visibility based on that.
+     */
+    public void setFreeformTasksVisible(boolean freeformTasksVisible) {
+        if (freeformTasksVisible != mFreeformTasksVisible) {
+            mFreeformTasksVisible = freeformTasksVisible;
+            updateLauncherVisibility();
+        }
+    }
+
+    /**
+     * Sets whether the overview is visible and updates launcher visibility based on that.
+     */
+    public void setOverviewStateEnabled(boolean overviewStateEnabled) {
+        if (overviewStateEnabled != mInOverviewState) {
+            mInOverviewState = overviewStateEnabled;
+            updateLauncherVisibility();
+        }
+    }
+
+    /**
+     * Updates launcher visibility and state to look like it is paused or resumed depending on
+     * whether freeform windows are showing in desktop mode.
+     */
+    private void updateLauncherVisibility() {
+        StatefulActivity<LauncherState> activity =
+                QuickstepLauncher.ACTIVITY_TRACKER.getCreatedActivity();
+        View workspaceView = mLauncher.getWorkspace();
+        if (activity == null || workspaceView == null || !isDesktopModeSupported()) return;
+
+        if (mFreeformTasksVisible) {
+            workspaceView.setVisibility(View.INVISIBLE);
+            if (!mInOverviewState) {
+                // When freeform is visible & we're not in overview, we want launcher to appear
+                // paused, this ensures that taskbar displays.
+                activity.setPaused();
+            }
+        } else {
+            workspaceView.setVisibility(View.VISIBLE);
+            // If freeform isn't visible ensure that launcher appears resumed to behave normally.
+            activity.setResumed();
+        }
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
index af422cb..026fa23 100644
--- a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -694,14 +694,10 @@
     }
 
     /**
-     * Adds the correct spacing to 3 button nav container. No-op if using gesture nav, setup
-     * is incomplete, or in kids mode.
+     * Adds the correct spacing to 3 button nav container depending on if device is in kids mode,
+     * setup wizard, or normal 3 button nav.
      */
     private void updateButtonLayoutSpacing() {
-        if (!mContext.isThreeButtonNav() || mContext.isNavBarKidsModeActive()
-                || !mContext.isUserSetupComplete()) {
-            return;
-        }
         DeviceProfile dp = mContext.getDeviceProfile();
         Resources res = mContext.getResources();
         boolean isInSetup = !mContext.isUserSetupComplete();
@@ -719,41 +715,6 @@
             return;
         }
 
-        // Add spacing after the end of the last nav button
-        FrameLayout.LayoutParams navButtonParams =
-                (FrameLayout.LayoutParams) mNavButtonContainer.getLayoutParams();
-        navButtonParams.gravity = Gravity.END;
-        navButtonParams.width = FrameLayout.LayoutParams.WRAP_CONTENT;
-        navButtonParams.height = MATCH_PARENT;
-
-        int navMarginEnd = (int) res.getDimension(dp.inv.inlineNavButtonsEndSpacing);
-        int contextualWidth = mEndContextualContainer.getWidth();
-        // If contextual buttons are showing, we check if the end margin is enough for the
-        // contextual button to be showing - if not, move the nav buttons over a smidge
-        if (isContextualButtonShowing() && navMarginEnd < contextualWidth) {
-            // Additional spacing, eat up half of space between last icon and nav button
-            navMarginEnd += res.getDimensionPixelSize(R.dimen.taskbar_hotseat_nav_spacing) / 2;
-        }
-        navButtonParams.setMarginEnd(navMarginEnd);
-        mNavButtonContainer.setLayoutParams(navButtonParams);
-
-        // Add the spaces in between the nav buttons
-        int spaceInBetween = res.getDimensionPixelSize(R.dimen.taskbar_button_space_inbetween);
-        for (int i = 0; i < mNavButtonContainer.getChildCount(); i++) {
-            View navButton = mNavButtonContainer.getChildAt(i);
-            LinearLayout.LayoutParams buttonLayoutParams =
-                    (LinearLayout.LayoutParams) navButton.getLayoutParams();
-            buttonLayoutParams.weight = 0;
-            if (i == 0) {
-                buttonLayoutParams.setMarginEnd(spaceInBetween / 2);
-            } else if (i == mNavButtonContainer.getChildCount() - 1) {
-                buttonLayoutParams.setMarginStart(spaceInBetween / 2);
-            } else {
-                buttonLayoutParams.setMarginStart(spaceInBetween / 2);
-                buttonLayoutParams.setMarginEnd(spaceInBetween / 2);
-            }
-        }
-
         if (isInSetup) {
             handleSetupUi();
 
@@ -829,6 +790,42 @@
             mNavButtonContainer.requestLayout();
 
             mHomeButton.setOnLongClickListener(null);
+        } else if (mContext.isThreeButtonNav()) {
+            // Setup normal 3 button
+            // Add spacing after the end of the last nav button
+            FrameLayout.LayoutParams navButtonParams =
+                    (FrameLayout.LayoutParams) mNavButtonContainer.getLayoutParams();
+            navButtonParams.gravity = Gravity.END;
+            navButtonParams.width = FrameLayout.LayoutParams.WRAP_CONTENT;
+            navButtonParams.height = MATCH_PARENT;
+
+            int navMarginEnd = (int) res.getDimension(dp.inv.inlineNavButtonsEndSpacing);
+            int contextualWidth = mEndContextualContainer.getWidth();
+            // If contextual buttons are showing, we check if the end margin is enough for the
+            // contextual button to be showing - if not, move the nav buttons over a smidge
+            if (isContextualButtonShowing() && navMarginEnd < contextualWidth) {
+                // Additional spacing, eat up half of space between last icon and nav button
+                navMarginEnd += res.getDimensionPixelSize(R.dimen.taskbar_hotseat_nav_spacing) / 2;
+            }
+            navButtonParams.setMarginEnd(navMarginEnd);
+            mNavButtonContainer.setLayoutParams(navButtonParams);
+
+            // Add the spaces in between the nav buttons
+            int spaceInBetween = res.getDimensionPixelSize(R.dimen.taskbar_button_space_inbetween);
+            for (int i = 0; i < mNavButtonContainer.getChildCount(); i++) {
+                View navButton = mNavButtonContainer.getChildAt(i);
+                LinearLayout.LayoutParams buttonLayoutParams =
+                        (LinearLayout.LayoutParams) navButton.getLayoutParams();
+                buttonLayoutParams.weight = 0;
+                if (i == 0) {
+                    buttonLayoutParams.setMarginEnd(spaceInBetween / 2);
+                } else if (i == mNavButtonContainer.getChildCount() - 1) {
+                    buttonLayoutParams.setMarginStart(spaceInBetween / 2);
+                } else {
+                    buttonLayoutParams.setMarginStart(spaceInBetween / 2);
+                    buttonLayoutParams.setMarginEnd(spaceInBetween / 2);
+                }
+            }
         }
 
     }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index 3203f44..4d96bf7 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -96,6 +96,7 @@
 import com.android.launcher3.proxy.ProxyActivityStarter;
 import com.android.launcher3.proxy.StartActivityParams;
 import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.statehandlers.DesktopVisibilityController;
 import com.android.launcher3.statemanager.StateManager.AtomicAnimationFactory;
 import com.android.launcher3.statemanager.StateManager.StateHandler;
 import com.android.launcher3.taskbar.LauncherTaskbarUIController;
@@ -167,6 +168,7 @@
     private FixedContainerItems mAllAppsPredictions;
     private HotseatPredictionController mHotseatPredictionController;
     private DepthController mDepthController;
+    private DesktopVisibilityController mDesktopVisibilityController;
     private QuickstepTransitionManager mAppTransitionManager;
     private OverviewActionsView mActionsView;
     private TISBindHelper mTISBindHelper;
@@ -207,6 +209,7 @@
 
         mTISBindHelper = new TISBindHelper(this, this::onTISConnected);
         mDepthController = new DepthController(this);
+        mDesktopVisibilityController = new DesktopVisibilityController(this);
         mHotseatPredictionController = new HotseatPredictionController(this);
 
         mEnableWidgetDepth = ENABLE_WIDGET_PICKER_DEPTH.get()
@@ -732,6 +735,10 @@
         return mDepthController;
     }
 
+    public DesktopVisibilityController getDesktopVisibilityController() {
+        return mDesktopVisibilityController;
+    }
+
     @Nullable
     public UnfoldTransitionProgressProvider getUnfoldTransitionProgressProvider() {
         return mUnfoldTransitionProgressProvider;
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index d728b75..0347c7e 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -1881,10 +1881,16 @@
     }
 
     private void finishCurrentTransitionToRecents() {
-        // TODO(b/245569277#comment2): enable once isFreeformActive is implemented
-        mStateCallback.setStateOnUiThread(STATE_CURRENT_TASK_FINISHED);
-        if (mRecentsAnimationController != null) {
-            mRecentsAnimationController.detachNavigationBarFromApp(true);
+        if (mRecentsAnimationController != null
+                && mActivityInterface.getDesktopVisibilityController() != null
+                && mActivityInterface.getDesktopVisibilityController().areFreeformTasksVisible()) {
+            mRecentsAnimationController.finish(true /* toRecents */,
+                    () -> mStateCallback.setStateOnUiThread(STATE_CURRENT_TASK_FINISHED));
+        } else {
+            mStateCallback.setStateOnUiThread(STATE_CURRENT_TASK_FINISHED);
+            if (mRecentsAnimationController != null) {
+                mRecentsAnimationController.detachNavigationBarFromApp(true);
+            }
         }
         ActiveGestureLog.INSTANCE.addLog(
                 /* event= */ "finishRecentsAnimation",
diff --git a/quickstep/src/com/android/quickstep/BaseActivityInterface.java b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
index d432004..294fa90 100644
--- a/quickstep/src/com/android/quickstep/BaseActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
@@ -50,6 +50,7 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.statehandlers.DesktopVisibilityController;
 import com.android.launcher3.statemanager.BaseState;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.taskbar.TaskbarUIController;
@@ -142,6 +143,11 @@
     }
 
     @Nullable
+    public DesktopVisibilityController getDesktopVisibilityController() {
+        return null;
+    }
+
+    @Nullable
     public abstract TaskbarUIController getTaskbarController();
 
     public final boolean isResumed() {
diff --git a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
index 8522a87..c7ca679 100644
--- a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
@@ -39,6 +39,7 @@
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.statehandlers.DesktopVisibilityController;
 import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.taskbar.LauncherTaskbarUIController;
 import com.android.launcher3.touch.PagedOrientationHandler;
@@ -175,6 +176,16 @@
 
     @Nullable
     @Override
+    public DesktopVisibilityController getDesktopVisibilityController() {
+        QuickstepLauncher launcher = getCreatedActivity();
+        if (launcher == null) {
+            return null;
+        }
+        return launcher.getDesktopVisibilityController();
+    }
+
+    @Nullable
+    @Override
     public LauncherTaskbarUIController getTaskbarController() {
         QuickstepLauncher launcher = getCreatedActivity();
         if (launcher == null) {
diff --git a/quickstep/src/com/android/quickstep/LauncherBackAnimationController.java b/quickstep/src/com/android/quickstep/LauncherBackAnimationController.java
index ee3b075..c0da8e4 100644
--- a/quickstep/src/com/android/quickstep/LauncherBackAnimationController.java
+++ b/quickstep/src/com/android/quickstep/LauncherBackAnimationController.java
@@ -36,6 +36,7 @@
 import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.window.BackEvent;
+import android.window.BackProgressAnimator;
 import android.window.IOnBackInvokedCallback;
 
 import com.android.launcher3.AbstractFloatingView;
@@ -90,6 +91,7 @@
     private float mBackProgress = 0;
     private boolean mBackInProgress = false;
     private IOnBackInvokedCallback mBackCallback;
+    private BackProgressAnimator mProgressAnimator = new BackProgressAnimator();
 
     public LauncherBackAnimationController(
             QuickstepLauncher launcher,
@@ -118,30 +120,41 @@
         mBackCallback = new IOnBackInvokedCallback.Stub() {
             @Override
             public void onBackCancelled() {
-                handler.post(() -> resetPositionAnimated());
+                handler.post(() -> {
+                    resetPositionAnimated();
+                    mProgressAnimator.reset();
+                });
             }
 
             @Override
             public void onBackInvoked() {
-                handler.post(() -> startTransition());
+                handler.post(() -> {
+                    startTransition();
+                    mProgressAnimator.reset();
+                });
             }
 
             @Override
             public void onBackProgressed(BackEvent backEvent) {
-                mBackProgress = backEvent.getProgress();
-                // TODO: Update once the interpolation curve spec is finalized.
-                mBackProgress =
-                        1 - (1 - mBackProgress) * (1 - mBackProgress) * (1
-                                - mBackProgress);
-                if (!mBackInProgress) {
-                    startBack(backEvent);
-                } else {
-                    updateBackProgress(mBackProgress, backEvent);
-                }
+                handler.post(() -> {
+                    mProgressAnimator.onBackProgressed(backEvent);
+                });
             }
 
             @Override
-            public void onBackStarted() { }
+            public void onBackStarted(BackEvent backEvent) {
+                handler.post(() -> {
+                    startBack(backEvent);
+                    mProgressAnimator.onBackStarted(backEvent, event -> {
+                        mBackProgress = event.getProgress();
+                        // TODO: Update once the interpolation curve spec is finalized.
+                        mBackProgress =
+                                1 - (1 - mBackProgress) * (1 - mBackProgress) * (1
+                                        - mBackProgress);
+                        updateBackProgress(mBackProgress, event);
+                    });
+                });
+            }
         };
         SystemUiProxy.INSTANCE.get(mLauncher).setBackToLauncherCallback(mBackCallback);
     }
@@ -169,6 +182,7 @@
         if (mBackCallback != null) {
             SystemUiProxy.INSTANCE.get(mLauncher).clearBackToLauncherCallback(mBackCallback);
         }
+        mProgressAnimator.reset();
         mBackCallback = null;
     }
 
@@ -187,28 +201,20 @@
 
         // TODO(b/218916755): Offset start rectangle in multiwindow mode.
         mStartRect.set(mBackTarget.windowConfiguration.getMaxBounds());
+        mCurrentRect.set(mStartRect);
     }
 
     private void updateBackProgress(float progress, BackEvent event) {
-        if (mBackTarget == null) {
+        if (!mBackInProgress || mBackTarget == null) {
             return;
         }
         float screenWidth = mStartRect.width();
         float screenHeight = mStartRect.height();
-        float dX = Math.abs(event.getTouchX() - mInitialTouchPos.x);
-        // The 'follow width' is the width of the window if it completely matches
-        // the gesture displacement.
-        float followWidth = screenWidth - dX;
-        // The 'progress width' is the width of the window if it strictly linearly interpolates
-        // to minimum scale base on progress.
-        float progressWidth = Utilities.mapRange(progress, 1, MIN_WINDOW_SCALE) * screenWidth;
-        // The final width is derived from interpolating between the follow with and progress width
-        // using gesture progress.
-        float width = Utilities.mapRange(progress, followWidth, progressWidth);
+        float width = Utilities.mapRange(progress, 1, MIN_WINDOW_SCALE) * screenWidth;
         float height = screenHeight / screenWidth * width;
         float deltaYRatio = (event.getTouchY() - mInitialTouchPos.y) / screenHeight;
         // Base the window movement in the Y axis on the touch movement in the Y axis.
-        float deltaY = (float) Math.sin(deltaYRatio * Math.PI * 0.5f) * mWindowMaxDeltaY;
+        float deltaY = (float) Math.sin(deltaYRatio * Math.PI * 0.5f) * mWindowMaxDeltaY * progress;
         // Move the window along the Y axis.
         float top = (screenHeight - height) * 0.5f + deltaY;
         // Move the window along the X axis.
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index 1452c8f..80db362 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -27,6 +27,7 @@
 import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_RECENTS;
 import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_SYSUI_PROXY;
 import static com.android.systemui.shared.system.QuickStepContract.KEY_EXTRA_UNLOCK_ANIMATION_CONTROLLER;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_FREEFORM_ACTIVE_IN_DESKTOP_MODE;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_NOTIFICATION_PANEL_EXPANDED;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_TRACING_ENABLED;
 import static com.android.wm.shell.sysui.ShellSharedConstants.KEY_EXTRA_SHELL_BACK_ANIMATION;
@@ -71,6 +72,7 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.provider.RestoreDbTask;
+import com.android.launcher3.statehandlers.DesktopVisibilityController;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.taskbar.TaskbarActivityContext;
 import com.android.launcher3.taskbar.TaskbarManager;
@@ -543,6 +545,18 @@
             mOverviewComponentObserver.onSystemUiStateChanged();
             mTaskbarManager.onSystemUiFlagsChanged(systemUiStateFlags);
 
+            boolean wasFreeformActive =
+                    (lastSysUIFlags & SYSUI_STATE_FREEFORM_ACTIVE_IN_DESKTOP_MODE) != 0;
+            boolean isFreeformActive =
+                    (systemUiStateFlags & SYSUI_STATE_FREEFORM_ACTIVE_IN_DESKTOP_MODE) != 0;
+            if (wasFreeformActive != isFreeformActive) {
+                DesktopVisibilityController controller = mOverviewComponentObserver
+                        .getActivityInterface().getDesktopVisibilityController();
+                if (controller != null) {
+                    controller.setFreeformTasksVisible(isFreeformActive);
+                }
+            }
+
             boolean wasExpanded = (lastSysUIFlags & SYSUI_STATE_NOTIFICATION_PANEL_EXPANDED) != 0;
             boolean isExpanded =
                     (systemUiStateFlags & SYSUI_STATE_NOTIFICATION_PANEL_EXPANDED) != 0;
diff --git a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
index 2ae7136..6c27587 100644
--- a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -147,6 +147,9 @@
                     & CLEAR_ALL_BUTTON) != 0;
             setDisallowScrollToClearAll(!hasClearAllButton);
         }
+        if (mActivity.getDesktopVisibilityController() != null) {
+            mActivity.getDesktopVisibilityController().setOverviewStateEnabled(enabled);
+        }
     }
 
     @Override
diff --git a/src/com/android/launcher3/BaseActivity.java b/src/com/android/launcher3/BaseActivity.java
index 83ff084..9bdc822 100644
--- a/src/com/android/launcher3/BaseActivity.java
+++ b/src/com/android/launcher3/BaseActivity.java
@@ -196,8 +196,7 @@
 
     @Override
     protected void onResume() {
-        addActivityFlags(ACTIVITY_STATE_RESUMED | ACTIVITY_STATE_USER_ACTIVE);
-        removeActivityFlags(ACTIVITY_STATE_USER_WILL_BE_ACTIVE);
+        setResumed();
         super.onResume();
     }
 
@@ -228,7 +227,7 @@
 
     @Override
     protected void onPause() {
-        removeActivityFlags(ACTIVITY_STATE_RESUMED | ACTIVITY_STATE_DEFERRED_RESUMED);
+        setPaused();
         super.onPause();
 
         // Reset the overridden sysui flags used for the task-swipe launch animation, we do this
@@ -260,6 +259,21 @@
         return (mActivityFlags & ACTIVITY_STATE_RESUMED) != 0;
     }
 
+    /**
+     * Sets the activity to appear as paused.
+     */
+    public void setPaused() {
+        removeActivityFlags(ACTIVITY_STATE_RESUMED | ACTIVITY_STATE_DEFERRED_RESUMED);
+    }
+
+    /**
+     * Sets the activity to appear as resumed.
+     */
+    public void setResumed() {
+        addActivityFlags(ACTIVITY_STATE_RESUMED | ACTIVITY_STATE_USER_ACTIVE);
+        removeActivityFlags(ACTIVITY_STATE_USER_WILL_BE_ACTIVE);
+    }
+
     public boolean isUserActive() {
         return (mActivityFlags & ACTIVITY_STATE_USER_ACTIVE) != 0;
     }
diff --git a/src/com/android/launcher3/FastScrollRecyclerView.java b/src/com/android/launcher3/FastScrollRecyclerView.java
index 747b755..2f927d3 100644
--- a/src/com/android/launcher3/FastScrollRecyclerView.java
+++ b/src/com/android/launcher3/FastScrollRecyclerView.java
@@ -24,7 +24,6 @@
 import android.view.accessibility.AccessibilityNodeInfo;
 
 import androidx.annotation.Nullable;
-import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.launcher3.compat.AccessibilityManagerCompat;
@@ -92,8 +91,7 @@
     protected int getAvailableScrollHeight() {
         // AvailableScrollHeight = Total height of the all items - first page height
         int firstPageHeight = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
-        int totalHeightOfAllItems = getItemsHeight(/* untilIndex= */ getAdapter().getItemCount());
-        int availableScrollHeight = totalHeightOfAllItems - firstPageHeight;
+        int availableScrollHeight = computeVerticalScrollRange() - firstPageHeight;
         return Math.max(0, availableScrollHeight);
     }
 
@@ -146,10 +144,7 @@
 
         // IF scroller is at the very top OR there is no scroll bar because there is probably not
         // enough items to scroll, THEN it's okay for the container to be pulled down.
-        if (getCurrentScrollY() == 0) {
-            return true;
-        }
-        return getAdapter() == null || getAdapter().getItemCount() == 0;
+        return computeVerticalScrollOffset() == 0;
     }
 
     /**
@@ -160,53 +155,6 @@
     }
 
     /**
-     * @return the scroll top of this recycler view.
-     */
-    public int getCurrentScrollY() {
-        Adapter adapter = getAdapter();
-        if (adapter == null) {
-            return -1;
-        }
-        if (adapter.getItemCount() == 0 || getChildCount() == 0) {
-            return -1;
-        }
-
-        int itemPosition = NO_POSITION;
-        View child = null;
-
-        LayoutManager layoutManager = getLayoutManager();
-        if (layoutManager instanceof LinearLayoutManager) {
-            // Use the LayoutManager as the source of truth for visible positions. During
-            // animations, the view group child may not correspond to the visible views that appear
-            // at the top.
-            itemPosition = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition();
-            child = layoutManager.findViewByPosition(itemPosition);
-        }
-
-        if (child == null) {
-            // If the layout manager returns null for any reason, which can happen before layout
-            // has occurred for the position, then look at the child of this view as a ViewGroup.
-            child = getChildAt(0);
-            itemPosition = getChildAdapterPosition(child);
-        }
-        if (itemPosition == NO_POSITION) {
-            return -1;
-        }
-        return getPaddingTop() + getItemsHeight(itemPosition)
-                - layoutManager.getDecoratedTop(child);
-    }
-
-    /**
-     * Returns the sum of the height, in pixels, of this list adapter's items from index
-     * 0 (inclusive) until {@code untilIndex} (exclusive). If untilIndex is same as the itemCount,
-     * it returns the full height of all the items.
-     *
-     * <p>If the untilIndex is larger than the total number of items in this adapter, returns the
-     * sum of all items' height.
-     */
-    protected abstract int getItemsHeight(int untilIndex);
-
-    /**
      * Maps the touch (from 0..1) to the adapter position that should be visible.
      * <p>Override in each subclass of this base class.
      */
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 3abefe0..07d0f55 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2803,7 +2803,7 @@
             View v = getFirstMatch(Collections.singletonList(activeRecyclerView),
                     preferredItem, packageAndUserAndApp);
 
-            if (v != null && activeRecyclerView.getCurrentScrollY() > 0) {
+            if (v != null && activeRecyclerView.computeVerticalScrollOffset() > 0) {
                 RectF locationBounds = new RectF();
                 FloatingIconView.getLocationBoundsForView(this, v, false, locationBounds,
                         new Rect());
diff --git a/src/com/android/launcher3/allapps/AllAppsGridAdapter.java b/src/com/android/launcher3/allapps/AllAppsGridAdapter.java
index fe0230a..368a373 100644
--- a/src/com/android/launcher3/allapps/AllAppsGridAdapter.java
+++ b/src/com/android/launcher3/allapps/AllAppsGridAdapter.java
@@ -26,7 +26,9 @@
 import androidx.core.view.accessibility.AccessibilityRecordCompat;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.RecyclerView.Adapter;
 
+import com.android.launcher3.util.ScrollableLayoutManager;
 import com.android.launcher3.views.ActivityContext;
 
 import java.util.List;
@@ -66,10 +68,10 @@
     /**
      * A subclass of GridLayoutManager that overrides accessibility values during app search.
      */
-    public class AppsGridLayoutManager extends GridLayoutManager {
+    public class AppsGridLayoutManager extends ScrollableLayoutManager {
 
         public AppsGridLayoutManager(Context context) {
-            super(context, 1, GridLayoutManager.VERTICAL, false);
+            super(context);
         }
 
         @Override
@@ -129,6 +131,15 @@
             }
             return extraRows;
         }
+
+        @Override
+        protected int incrementTotalHeight(Adapter adapter, int position, int heightUntilLastPos) {
+            AllAppsGridAdapter.AdapterItem item = mApps.getAdapterItems().get(position);
+            // only account for the first icon in the row since they are the same size within a row
+            return (isIconViewType(item.viewType) && item.rowAppIndex != 0)
+                    ? heightUntilLastPos
+                    : (heightUntilLastPos + mCachedSizes.get(item.viewType));
+        }
     }
 
     @Override
diff --git a/src/com/android/launcher3/allapps/AllAppsRecyclerView.java b/src/com/android/launcher3/allapps/AllAppsRecyclerView.java
index 0efa7c4..ac10892 100644
--- a/src/com/android/launcher3/allapps/AllAppsRecyclerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsRecyclerView.java
@@ -15,8 +15,6 @@
  */
 package com.android.launcher3.allapps;
 
-import static android.view.View.MeasureSpec.UNSPECIFIED;
-
 import static com.android.launcher3.logger.LauncherAtom.ContainerInfo;
 import static com.android.launcher3.logger.LauncherAtom.SearchResultContainer;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ALLAPPS_SCROLLED_DOWN;
@@ -30,7 +28,6 @@
 import android.graphics.Canvas;
 import android.util.AttributeSet;
 import android.util.Log;
-import android.util.SparseIntArray;
 
 import androidx.recyclerview.widget.RecyclerView;
 
@@ -54,41 +51,11 @@
     private static final boolean DEBUG = false;
     private static final boolean DEBUG_LATENCY = Utilities.isPropertyEnabled(SEARCH_LOGGING);
 
-    protected AlphabeticalAppsList<?> mApps;
     protected final int mNumAppsPerRow;
-
-    // The specific view heights that we use to calculate scroll
-    private final SparseIntArray mViewHeights = new SparseIntArray();
-    private final SparseIntArray mCachedScrollPositions = new SparseIntArray();
     private final AllAppsFastScrollHelper mFastScrollHelper;
     private int mCumulativeVerticalScroll;
 
-
-    private final AdapterDataObserver mObserver = new RecyclerView.AdapterDataObserver() {
-        public void onChanged() {
-            mCachedScrollPositions.clear();
-        }
-
-        @Override
-        public void onItemRangeChanged(int positionStart, int itemCount) {
-            onChanged();
-        }
-
-        @Override
-        public void onItemRangeInserted(int positionStart, int itemCount) {
-            onChanged();
-        }
-
-        @Override
-        public void onItemRangeRemoved(int positionStart, int itemCount) {
-            onChanged();
-        }
-
-        @Override
-        public void onItemRangeMoved(int fromPosition, int toPosition, int itemCount) {
-            onChanged();
-        }
-    };
+    protected AlphabeticalAppsList<?> mApps;
 
     public AllAppsRecyclerView(Context context) {
         this(context, null);
@@ -128,12 +95,8 @@
         pool.setMaxRecycledViews(AllAppsGridAdapter.VIEW_TYPE_ALL_APPS_DIVIDER, 1);
         pool.setMaxRecycledViews(AllAppsGridAdapter.VIEW_TYPE_ICON, approxRows
                 * (mNumAppsPerRow + 1));
-
-        mViewHeights.clear();
-        mViewHeights.put(AllAppsGridAdapter.VIEW_TYPE_ICON, grid.allAppsCellHeightPx);
     }
 
-
     @Override
     public void onDraw(Canvas c) {
         if (DEBUG) {
@@ -213,17 +176,6 @@
     }
 
     @Override
-    public void setAdapter(Adapter adapter) {
-        if (getAdapter() != null) {
-            getAdapter().unregisterAdapterDataObserver(mObserver);
-        }
-        super.setAdapter(adapter);
-        if (adapter != null) {
-            adapter.registerAdapterDataObserver(mObserver);
-        }
-    }
-
-    @Override
     protected boolean isPaddingOffsetRequired() {
         return true;
     }
@@ -244,13 +196,13 @@
         List<AllAppsGridAdapter.AdapterItem> items = mApps.getAdapterItems();
 
         // Skip early if there are no items or we haven't been measured
-        if (items.isEmpty() || mNumAppsPerRow == 0) {
+        if (items.isEmpty() || mNumAppsPerRow == 0 || getChildCount() == 0) {
             mScrollbar.setThumbOffsetY(-1);
             return;
         }
 
         // Skip early if, there no child laid out in the container.
-        int scrollY = getCurrentScrollY();
+        int scrollY = computeVerticalScrollOffset();
         if (scrollY < 0) {
             mScrollbar.setThumbOffsetY(-1);
             return;
@@ -305,51 +257,6 @@
         }
     }
 
-    @Override
-    protected int getItemsHeight(int position) {
-        List<AllAppsGridAdapter.AdapterItem> items = mApps.getAdapterItems();
-        AllAppsGridAdapter.AdapterItem posItem = position < items.size()
-                ? items.get(position) : null;
-        int y = mCachedScrollPositions.get(position, -1);
-        if (y < 0) {
-            y = 0;
-            for (int i = 0; i < position; i++) {
-                AllAppsGridAdapter.AdapterItem item = items.get(i);
-                if (AllAppsGridAdapter.isIconViewType(item.viewType)) {
-                    // Break once we reach the desired row
-                    if (posItem != null && posItem.viewType == item.viewType &&
-                            posItem.rowIndex == item.rowIndex) {
-                        break;
-                    }
-                    // Otherwise, only account for the first icon in the row since they are the same
-                    // size within a row
-                    if (item.rowAppIndex == 0) {
-                        y += mViewHeights.get(item.viewType, 0);
-                    }
-                } else {
-                    // Rest of the views span the full width
-                    int elHeight = mViewHeights.get(item.viewType);
-                    if (elHeight == 0) {
-                        ViewHolder holder = findViewHolderForAdapterPosition(i);
-                        if (holder == null) {
-                            holder = getAdapter().createViewHolder(this, item.viewType);
-                            getAdapter().onBindViewHolder(holder, i);
-                            holder.itemView.measure(UNSPECIFIED, UNSPECIFIED);
-                            elHeight = holder.itemView.getMeasuredHeight();
-
-                            getRecycledViewPool().putRecycledView(holder);
-                        } else {
-                            elHeight = holder.itemView.getMeasuredHeight();
-                        }
-                    }
-                    y += elHeight;
-                }
-            }
-            mCachedScrollPositions.put(position, y);
-        }
-        return y;
-    }
-
     public int getScrollBarTop() {
         return getResources().getDimensionPixelOffset(R.dimen.all_apps_header_top_padding);
     }
diff --git a/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java b/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java
index 70c1e18..7f6247e 100644
--- a/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java
@@ -106,7 +106,8 @@
             new RecyclerView.OnScrollListener() {
                 @Override
                 public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
-                    updateHeaderScroll(((AllAppsRecyclerView) recyclerView).getCurrentScrollY());
+                    updateHeaderScroll(
+                            ((AllAppsRecyclerView) recyclerView).computeVerticalScrollOffset());
                 }
             };
 
diff --git a/src/com/android/launcher3/allapps/FloatingHeaderView.java b/src/com/android/launcher3/allapps/FloatingHeaderView.java
index f31379e..1cbb0f9 100644
--- a/src/com/android/launcher3/allapps/FloatingHeaderView.java
+++ b/src/com/android/launcher3/allapps/FloatingHeaderView.java
@@ -68,7 +68,7 @@
                         mAnimator.cancel();
                     }
 
-                    int current = -mCurrentRV.getCurrentScrollY();
+                    int current = -mCurrentRV.computeVerticalScrollOffset();
                     boolean headerCollapsed = mHeaderCollapsed;
                     moved(current);
                     applyVerticalMove();
diff --git a/src/com/android/launcher3/testing/TestInformationHandler.java b/src/com/android/launcher3/testing/TestInformationHandler.java
index d3c9bc9..269baf0 100644
--- a/src/com/android/launcher3/testing/TestInformationHandler.java
+++ b/src/com/android/launcher3/testing/TestInformationHandler.java
@@ -112,12 +112,12 @@
 
             case TestProtocol.REQUEST_APPS_LIST_SCROLL_Y: {
                 return getLauncherUIProperty(Bundle::putInt,
-                        l -> l.getAppsView().getActiveRecyclerView().getCurrentScrollY());
+                        l -> l.getAppsView().getActiveRecyclerView().computeVerticalScrollOffset());
             }
 
             case TestProtocol.REQUEST_WIDGETS_SCROLL_Y: {
                 return getLauncherUIProperty(Bundle::putInt,
-                        l -> WidgetsFullSheet.getWidgetsView(l).getCurrentScrollY());
+                        l -> WidgetsFullSheet.getWidgetsView(l).computeVerticalScrollOffset());
             }
 
             case TestProtocol.REQUEST_TARGET_INSETS: {
diff --git a/src/com/android/launcher3/testing/shared/TestProtocol.java b/src/com/android/launcher3/testing/shared/TestProtocol.java
index 5116b01..91b7b2d 100644
--- a/src/com/android/launcher3/testing/shared/TestProtocol.java
+++ b/src/com/android/launcher3/testing/shared/TestProtocol.java
@@ -124,6 +124,7 @@
             "get-grid-task-size-rect-for-tablet";
     public static final String REQUEST_GET_OVERVIEW_PAGE_SPACING = "get-overview-page-spacing";
     public static final String REQUEST_ENABLE_ROTATION = "enable_rotation";
+    public static final String REQUEST_ENABLE_SUGGESTION = "enable-suggestion";
 
     public static boolean sDebugTracing = false;
     public static final String REQUEST_ENABLE_DEBUG_TRACING = "enable-debug-tracing";
diff --git a/src/com/android/launcher3/util/ScrollableLayoutManager.java b/src/com/android/launcher3/util/ScrollableLayoutManager.java
new file mode 100644
index 0000000..17eaefd
--- /dev/null
+++ b/src/com/android/launcher3/util/ScrollableLayoutManager.java
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.util;
+
+import android.content.Context;
+import android.util.SparseIntArray;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.RecyclerView.Adapter;
+import androidx.recyclerview.widget.RecyclerView.State;
+import androidx.recyclerview.widget.RecyclerView.ViewHolder;
+
+/**
+ * Extension of {@link GridLayoutManager} with support for smooth scrolling
+ */
+public class ScrollableLayoutManager extends GridLayoutManager {
+
+    // keyed on item type
+    protected final SparseIntArray mCachedSizes = new SparseIntArray();
+
+    private RecyclerView mRv;
+
+    /**
+     * Precalculated total height keyed on the item position. This is always incremental.
+     * Subclass can override {@link #incrementTotalHeight} to incorporate the layout logic.
+     * For example all-apps should have same values for items in same row,
+     *     sample values: 0, 10, 10, 10, 10, 20, 20, 20, 20
+     * whereas widgets will have strictly increasing values
+     *     sample values: 0, 10, 50, 60, 110
+     */
+
+    //
+    private int[] mTotalHeightCache = new int[1];
+    private int mLastValidHeightIndex = 0;
+
+    public ScrollableLayoutManager(Context context) {
+        super(context, 1, GridLayoutManager.VERTICAL, false);
+    }
+
+    @Override
+    public void onAttachedToWindow(RecyclerView view) {
+        super.onAttachedToWindow(view);
+        mRv = view;
+    }
+
+    @Override
+    public void layoutDecorated(@NonNull View child, int left, int top, int right, int bottom) {
+        super.layoutDecorated(child, left, top, right, bottom);
+        mCachedSizes.put(
+                mRv.getChildViewHolder(child).getItemViewType(), child.getMeasuredHeight());
+    }
+
+    @Override
+    public void layoutDecoratedWithMargins(@NonNull View child, int left, int top, int right,
+            int bottom) {
+        super.layoutDecoratedWithMargins(child, left, top, right, bottom);
+        mCachedSizes.put(
+                mRv.getChildViewHolder(child).getItemViewType(), child.getMeasuredHeight());
+    }
+
+    @Override
+    public int computeVerticalScrollExtent(State state) {
+        return mRv == null ? 0 : mRv.getHeight();
+    }
+
+    @Override
+    public int computeVerticalScrollOffset(State state) {
+        Adapter adapter = mRv == null ? null : mRv.getAdapter();
+        if (adapter == null) {
+            return 0;
+        }
+        if (adapter.getItemCount() == 0 || getChildCount() == 0) {
+            return 0;
+        }
+        View child = getChildAt(0);
+        ViewHolder holder = mRv.findContainingViewHolder(child);
+        if (holder == null) {
+            return 0;
+        }
+        int itemPosition = holder.getLayoutPosition();
+        if (itemPosition < 0) {
+            return 0;
+        }
+        return getPaddingTop() + getItemsHeight(adapter, itemPosition) - getDecoratedTop(child);
+    }
+
+    @Override
+    public int computeVerticalScrollRange(State state) {
+        Adapter adapter = mRv == null ? null : mRv.getAdapter();
+        return adapter == null ? 0 : getItemsHeight(adapter, adapter.getItemCount());
+    }
+
+    /**
+     * Returns the sum of the height, in pixels, of this list adapter's items from index
+     * 0 (inclusive) until {@code untilIndex} (exclusive). If untilIndex is same as the itemCount,
+     * it returns the full height of all the items.
+     *
+     * <p>If the untilIndex is larger than the total number of items in this adapter, returns the
+     * sum of all items' height.
+     */
+    private int getItemsHeight(Adapter adapter, int untilIndex) {
+        final int totalItems = adapter.getItemCount();
+        if (mTotalHeightCache.length < (totalItems + 1)) {
+            mTotalHeightCache = new int[totalItems + 1];
+            mLastValidHeightIndex = 0;
+        }
+        if (untilIndex > totalItems) {
+            untilIndex = totalItems;
+        } else if (untilIndex < 0) {
+            untilIndex = 0;
+        }
+        if (untilIndex <= mLastValidHeightIndex) {
+            return mTotalHeightCache[untilIndex];
+        }
+
+        int totalItemsHeight = mTotalHeightCache[mLastValidHeightIndex];
+        for (int i = mLastValidHeightIndex; i < untilIndex; i++) {
+            totalItemsHeight = incrementTotalHeight(adapter, i, totalItemsHeight);
+            mTotalHeightCache[i + 1] = totalItemsHeight;
+        }
+        mLastValidHeightIndex = untilIndex;
+        return totalItemsHeight;
+    }
+
+    /**
+     * The current implementation assumes a linear list with every item taking up the whole row.
+     * Subclasses should override this method to account for any spanning logic
+     */
+    protected int incrementTotalHeight(Adapter adapter, int position, int heightUntilLastPos) {
+        return heightUntilLastPos + mCachedSizes.get(adapter.getItemViewType(position));
+    }
+
+    private void invalidateScrollCache() {
+        mLastValidHeightIndex = 0;
+    }
+
+    @Override
+    public void onItemsAdded(RecyclerView recyclerView, int positionStart, int itemCount) {
+        super.onItemsAdded(recyclerView, positionStart, itemCount);
+        invalidateScrollCache();
+    }
+
+    @Override
+    public void onItemsChanged(RecyclerView recyclerView) {
+        super.onItemsChanged(recyclerView);
+        invalidateScrollCache();
+    }
+
+    @Override
+    public void onItemsRemoved(RecyclerView recyclerView, int positionStart, int itemCount) {
+        super.onItemsRemoved(recyclerView, positionStart, itemCount);
+        invalidateScrollCache();
+    }
+
+    @Override
+    public void onItemsMoved(RecyclerView recyclerView, int from, int to, int itemCount) {
+        super.onItemsMoved(recyclerView, from, to, itemCount);
+        invalidateScrollCache();
+    }
+
+    @Override
+    public void onItemsUpdated(RecyclerView recyclerView, int positionStart, int itemCount,
+            Object payload) {
+        super.onItemsUpdated(recyclerView, positionStart, itemCount, payload);
+        invalidateScrollCache();
+    }
+}
diff --git a/src/com/android/launcher3/views/RecyclerViewFastScroller.java b/src/com/android/launcher3/views/RecyclerViewFastScroller.java
index 40e4ce1..3af2e3c 100644
--- a/src/com/android/launcher3/views/RecyclerViewFastScroller.java
+++ b/src/com/android/launcher3/views/RecyclerViewFastScroller.java
@@ -119,7 +119,6 @@
     // prevent jumping, this offset is applied as the user scrolls.
     protected int mTouchOffsetY;
     protected int mThumbOffsetY;
-    protected int mRvOffsetY;
 
     // Fast scroller popup
     private TextView mPopupView;
@@ -207,16 +206,11 @@
 
     public void setThumbOffsetY(int y) {
         if (mThumbOffsetY == y) {
-            int rvCurrentOffsetY = mRv.getCurrentScrollY();
-            if (mRvOffsetY != rvCurrentOffsetY) {
-                mRvOffsetY = mRv.getCurrentScrollY();
-            }
             return;
         }
         updatePopupY(y);
         mThumbOffsetY = y;
         invalidate();
-        mRvOffsetY = mRv.getCurrentScrollY();
     }
 
     public int getThumbOffsetY() {
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
index 35fa7a4..5969e3e 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
@@ -19,7 +19,6 @@
 import android.content.Context;
 import android.graphics.Point;
 import android.util.AttributeSet;
-import android.util.SparseIntArray;
 import android.view.MotionEvent;
 
 import androidx.recyclerview.widget.LinearLayoutManager;
@@ -28,6 +27,7 @@
 
 import com.android.launcher3.FastScrollRecyclerView;
 import com.android.launcher3.R;
+import com.android.launcher3.util.ScrollableLayoutManager;
 
 /**
  * The widgets recycler view.
@@ -42,14 +42,6 @@
     private boolean mTouchDownOnScroller;
     private HeaderViewDimensionsProvider mHeaderViewDimensionsProvider;
 
-    /**
-     * There is always 1 or 0 item of VIEW_TYPE_WIDGETS_LIST. Other types have fixes sizes, so the
-     * the size can be used for all other items of same type. Caching the last know size for
-     * VIEW_TYPE_WIDGETS_LIST allows us to use it to estimate full size even when
-     * VIEW_TYPE_WIDGETS_LIST is not visible on the screen.
-     */
-    private final SparseIntArray mCachedSizes = new SparseIntArray();
-
     public WidgetsRecyclerView(Context context) {
         this(context, null);
     }
@@ -68,9 +60,7 @@
     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
-        // create a layout manager with Launcher's context so that scroll position
-        // can be preserved during screen rotation.
-        setLayoutManager(new LinearLayoutManager(getContext()));
+        setLayoutManager(new ScrollableLayoutManager(getContext()));
     }
 
     @Override
@@ -114,7 +104,7 @@
         }
 
         // Skip early if, there no child laid out in the container.
-        int scrollY = getCurrentScrollY();
+        int scrollY = computeVerticalScrollOffset();
         if (scrollY < 0) {
             mScrollbar.setThumbOffsetY(-1);
             return;
@@ -164,39 +154,6 @@
     }
 
     /**
-     * Returns the sum of the height, in pixels, of this list adapter's items from index 0 until
-     * {@code untilIndex}.
-     *
-     * <p>If the untilIndex is larger than the total number of items in this adapter, returns the
-     * sum of all items' height.
-     */
-    @Override
-    protected int getItemsHeight(int untilIndex) {
-        // Initialize cache
-        int childCount = getChildCount();
-        int startPosition;
-        if (childCount > 0
-                && ((startPosition = getChildAdapterPosition(getChildAt(0))) != NO_POSITION)) {
-            int loopCount = Math.min(getChildCount(), getAdapter().getItemCount() - startPosition);
-            for (int i = 0; i < loopCount; i++) {
-                mCachedSizes.put(
-                        mAdapter.getItemViewType(startPosition + i),
-                        getChildAt(i).getMeasuredHeight());
-            }
-        }
-
-        if (untilIndex > mAdapter.getItems().size()) {
-            untilIndex = mAdapter.getItems().size();
-        }
-        int totalItemsHeight = 0;
-        for (int i = 0; i < untilIndex; i++) {
-            int type = mAdapter.getItemViewType(i);
-            totalItemsHeight += mCachedSizes.get(type);
-        }
-        return totalItemsHeight;
-    }
-
-    /**
      * Provides dimensions of the header view that is shown at the top of a
      * {@link WidgetsRecyclerView}.
      */
diff --git a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
index 32b62fb..70d122b 100644
--- a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
+++ b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
@@ -537,7 +537,7 @@
     }
 
     protected int getAllAppsScroll(Launcher launcher) {
-        return launcher.getAppsView().getActiveRecyclerView().getCurrentScrollY();
+        return launcher.getAppsView().getActiveRecyclerView().computeVerticalScrollOffset();
     }
 
     private void checkLauncherIntegrity(
diff --git a/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java b/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java
index a3eee00..cf5f5fc 100644
--- a/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java
+++ b/tests/src/com/android/launcher3/ui/TaplTestsLauncher3.java
@@ -302,7 +302,7 @@
     }
 
     private int getWidgetsScroll(Launcher launcher) {
-        return getWidgetsView(launcher).getCurrentScrollY();
+        return getWidgetsView(launcher).computeVerticalScrollOffset();
     }
 
     private boolean isOptionsPopupVisible(Launcher launcher) {
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 41bb7f3..449b7b7 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -391,6 +391,10 @@
         getTestInfo(TestProtocol.REQUEST_ENABLE_ROTATION, Boolean.toString(on));
     }
 
+    public void setEnableSuggestion(boolean enableSuggestion) {
+        getTestInfo(TestProtocol.REQUEST_ENABLE_SUGGESTION, Boolean.toString(enableSuggestion));
+    }
+
     public boolean hadNontestEvents() {
         return getTestInfo(TestProtocol.REQUEST_GET_HAD_NONTEST_EVENTS)
                 .getBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD);