diff --git a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
index 85e5ab0..b40a1d5 100644
--- a/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
+++ b/quickstep/src/com/android/launcher3/hybridhotseat/HotseatPredictionController.java
@@ -262,10 +262,6 @@
         } else {
             removeOutlineDrawings();
         }
-
-        if (mLauncher.getTaskbarUIController() != null) {
-            mLauncher.getTaskbarUIController().onHotseatUpdated();
-        }
     }
 
     private void removeOutlineDrawings() {
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index 7340559..8b11154 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -48,7 +48,6 @@
 
     private final BaseQuickstepLauncher mLauncher;
     private final TaskbarStateHandler mTaskbarStateHandler;
-    private final TaskbarHotseatController mHotseatController;
 
     private final TaskbarActivityContext mContext;
     private final TaskbarDragLayer mTaskbarDragLayer;
@@ -77,8 +76,6 @@
 
         mLauncher = launcher;
         mTaskbarStateHandler = mLauncher.getTaskbarStateHandler();
-        mHotseatController = new TaskbarHotseatController(
-                mLauncher, mTaskbarView::updateHotseatItems);
     }
 
     @Override
@@ -91,7 +88,6 @@
         MultiValueAlpha taskbarIconAlpha = mControllers.taskbarViewController.getTaskbarIconAlpha();
         mIconAlphaForHome = taskbarIconAlpha.getProperty(ALPHA_INDEX_HOME);
 
-        mHotseatController.init();
         mLauncher.setTaskbarUIController(this);
         mKeyguardController = taskbarControllers.taskbarKeyguardController;
 
@@ -106,7 +102,6 @@
         mIconAlignmentForResumedState.finishAnimation();
         mIconAlignmentForGestureState.finishAnimation();
 
-        mHotseatController.cleanup();
         mLauncher.getHotseat().setIconsAlpha(1f);
         mLauncher.setTaskbarUIController(null);
     }
@@ -244,13 +239,6 @@
     }
 
     /**
-     * Should be called when one or more items in the Hotseat have changed.
-     */
-    public void onHotseatUpdated() {
-        mHotseatController.onHotseatUpdated();
-    }
-
-    /**
      * @param ev MotionEvent in screen coordinates.
      * @return Whether any Taskbar item could handle the given MotionEvent if given the chance.
      */
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
index 8279a47..be26913 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
@@ -85,5 +85,6 @@
         rotationButtonController.onDestroy();
         taskbarDragLayerController.onDestroy();
         taskbarKeyguardController.onDestroy();
+        taskbarViewController.onDestroy();
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarHotseatController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarHotseatController.java
deleted file mode 100644
index 91cf7ef..0000000
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarHotseatController.java
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.taskbar;
-
-import android.view.View;
-
-import com.android.launcher3.BaseQuickstepLauncher;
-import com.android.launcher3.CellLayout;
-import com.android.launcher3.DropTarget;
-import com.android.launcher3.Hotseat;
-import com.android.launcher3.ShortcutAndWidgetContainer;
-import com.android.launcher3.dragndrop.DragController;
-import com.android.launcher3.dragndrop.DragOptions;
-import com.android.launcher3.model.data.ItemInfo;
-
-import java.util.function.Consumer;
-
-/**
- * Works with TaskbarController to update the TaskbarView's Hotseat items.
- */
-public class TaskbarHotseatController {
-
-    private final BaseQuickstepLauncher mLauncher;
-    private final Hotseat mHotseat;
-    private final Consumer<ItemInfo[]> mTaskbarCallbacks;
-    private final int mNumHotseatIcons;
-
-    private final DragController.DragListener mDragListener = new DragController.DragListener() {
-        @Override
-        public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) { }
-
-        @Override
-        public void onDragEnd() {
-            onHotseatUpdated();
-        }
-    };
-
-    public TaskbarHotseatController(
-            BaseQuickstepLauncher launcher, Consumer<ItemInfo[]> taskbarCallbacks) {
-        mLauncher = launcher;
-        mHotseat = mLauncher.getHotseat();
-        mTaskbarCallbacks = taskbarCallbacks;
-        mNumHotseatIcons = mLauncher.getDeviceProfile().numShownHotseatIcons;
-    }
-
-    protected void init() {
-        mLauncher.getDragController().addDragListener(mDragListener);
-        onHotseatUpdated();
-    }
-
-    protected void cleanup() {
-        mLauncher.getDragController().removeDragListener(mDragListener);
-    }
-
-    /**
-     * Called when any Hotseat item changes, and reports the new list of items to TaskbarController.
-     */
-    protected void onHotseatUpdated() {
-        ShortcutAndWidgetContainer shortcutsAndWidgets = mHotseat.getShortcutsAndWidgets();
-        ItemInfo[] hotseatItemInfos = new ItemInfo[mNumHotseatIcons];
-        for (int i = 0; i < shortcutsAndWidgets.getChildCount(); i++) {
-            View child = shortcutsAndWidgets.getChildAt(i);
-            Object tag = shortcutsAndWidgets.getChildAt(i).getTag();
-            if (tag instanceof ItemInfo) {
-                ItemInfo itemInfo = (ItemInfo) tag;
-                CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
-                // Since the hotseat might be laid out vertically or horizontally, use whichever
-                // index is higher.
-                int index = Math.max(lp.cellX, lp.cellY);
-                if (0 <= index && index < hotseatItemInfos.length) {
-                    hotseatItemInfos[index] = itemInfo;
-                }
-            }
-        }
-
-        mTaskbarCallbacks.accept(hotseatItemInfos);
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarModelCallbacks.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarModelCallbacks.java
new file mode 100644
index 0000000..fc5abd0
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarModelCallbacks.java
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import android.util.SparseArray;
+import android.view.View;
+
+import com.android.launcher3.LauncherSettings.Favorites;
+import com.android.launcher3.model.BgDataModel;
+import com.android.launcher3.model.BgDataModel.FixedContainerItems;
+import com.android.launcher3.model.data.ItemInfo;
+import com.android.launcher3.model.data.WorkspaceItemInfo;
+import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
+import com.android.launcher3.util.ItemInfoMatcher;
+import com.android.launcher3.util.LauncherBindableItemsContainer;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+
+/**
+ * Launcher model Callbacks for rendering taskbar.
+ */
+public class TaskbarModelCallbacks implements
+        BgDataModel.Callbacks, LauncherBindableItemsContainer {
+
+    private final SparseArray<ItemInfo> mHotseatItems = new SparseArray<>();
+    private List<ItemInfo> mPredictedItems = Collections.emptyList();
+
+    private final TaskbarActivityContext mContext;
+    private final TaskbarView mContainer;
+
+    private boolean mBindInProgress = false;
+
+    public TaskbarModelCallbacks(
+            TaskbarActivityContext context, TaskbarView container) {
+        mContext = context;
+        mContainer = container;
+    }
+
+    @Override
+    public void startBinding() {
+        mBindInProgress = true;
+        mHotseatItems.clear();
+        mPredictedItems = Collections.emptyList();
+    }
+
+    @Override
+    public void finishBindingItems(IntSet pagesBoundFirst) {
+        mBindInProgress = false;
+        commitItemsToUI();
+    }
+
+    @Override
+    public void bindAppsAdded(IntArray newScreens, ArrayList<ItemInfo> addNotAnimated,
+            ArrayList<ItemInfo> addAnimated) {
+        boolean add1 = handleItemsAdded(addNotAnimated);
+        boolean add2 = handleItemsAdded(addAnimated);
+        if (add1 || add2) {
+            commitItemsToUI();
+        }
+    }
+
+    @Override
+    public void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons) {
+        if (handleItemsAdded(shortcuts)) {
+            commitItemsToUI();
+        }
+    }
+
+    private boolean handleItemsAdded(List<ItemInfo> items) {
+        boolean modified = false;
+        for (ItemInfo item : items) {
+            if (item.container == Favorites.CONTAINER_HOTSEAT) {
+                mHotseatItems.put(item.screenId, item);
+                modified = true;
+            }
+        }
+        return modified;
+    }
+
+
+    @Override
+    public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) {
+        updateWorkspaceItems(updated, mContext);
+    }
+
+    @Override
+    public void bindRestoreItemsChange(HashSet<ItemInfo> updates) {
+        updateRestoreItems(updates, mContext);
+    }
+
+    @Override
+    public void mapOverItems(ItemOperator op) {
+        final int itemCount = mContainer.getChildCount();
+        for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) {
+            View item = mContainer.getChildAt(itemIdx);
+            if (op.evaluate((ItemInfo) item.getTag(), item)) {
+                return;
+            }
+        }
+    }
+
+    @Override
+    public void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher) {
+        if (handleItemsRemoved(matcher)) {
+            commitItemsToUI();
+        }
+    }
+
+    private boolean handleItemsRemoved(ItemInfoMatcher matcher) {
+        boolean modified = false;
+        for (int i = mHotseatItems.size() - 1; i >= 0; i--) {
+            if (matcher.matchesInfo(mHotseatItems.valueAt(i))) {
+                modified = true;
+                mHotseatItems.removeAt(i);
+            }
+        }
+        return modified;
+    }
+
+    @Override
+    public void bindItemsModified(List<ItemInfo> items) {
+        boolean removed = handleItemsRemoved(ItemInfoMatcher.ofItems(items));
+        boolean added = handleItemsAdded(items);
+        if (removed || added) {
+            commitItemsToUI();
+        }
+    }
+
+    @Override
+    public void bindExtraContainerItems(FixedContainerItems item) {
+        if (item.containerId == Favorites.CONTAINER_HOTSEAT_PREDICTION) {
+            mPredictedItems = item.items;
+            commitItemsToUI();
+        }
+    }
+
+    private void commitItemsToUI() {
+        if (mBindInProgress) {
+            return;
+        }
+
+        ItemInfo[] hotseatItemInfos =
+                new ItemInfo[mContext.getDeviceProfile().numShownHotseatIcons];
+        int predictionSize = mPredictedItems.size();
+        int predictionNextIndex = 0;
+
+        for (int i = 0; i < hotseatItemInfos.length; i++) {
+            hotseatItemInfos[i] = mHotseatItems.get(i);
+            if (hotseatItemInfos[i] == null && predictionNextIndex < predictionSize) {
+                hotseatItemInfos[i] = mPredictedItems.get(predictionNextIndex);
+                hotseatItemInfos[i].screenId = i;
+                predictionNextIndex++;
+            }
+        }
+        mContainer.updateHotseatItems(hotseatItemInfos);
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
index 50c26b3..94c0ebe 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
@@ -24,6 +24,7 @@
 import android.view.View;
 
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.model.data.ItemInfo;
@@ -50,6 +51,8 @@
     private final AnimatedFloat mTaskbarIconTranslationYForStash = new AnimatedFloat(
             this::updateTranslationY);
 
+    private final TaskbarModelCallbacks mModelCallbacks;
+
     // Initialized in init.
     private TaskbarControllers mControllers;
 
@@ -63,6 +66,7 @@
         mTaskbarView = taskbarView;
         mTaskbarIconAlpha = new MultiValueAlpha(mTaskbarView, 4);
         mTaskbarIconAlpha.setUpdateVisibility(true);
+        mModelCallbacks = new TaskbarModelCallbacks(activity, mTaskbarView);
     }
 
     public void init(TaskbarControllers controllers) {
@@ -71,6 +75,11 @@
         mTaskbarView.getLayoutParams().height = mActivity.getDeviceProfile().taskbarSize;
 
         mTaskbarIconScaleForStash.updateValue(1f);
+        LauncherAppState.getInstance(mActivity).getModel().addCallbacksAndLoad(mModelCallbacks);
+    }
+
+    public void onDestroy() {
+        LauncherAppState.getInstance(mActivity).getModel().removeCallbacks(mModelCallbacks);
     }
 
     public boolean areIconsVisible() {
diff --git a/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java b/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java
index c115bbb..c46809a 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/DeviceFlag.java
@@ -17,21 +17,17 @@
 package com.android.launcher3.uioverrides;
 
 import android.annotation.TargetApi;
-import android.content.Context;
 import android.os.Build;
 import android.provider.DeviceConfig;
 
 import com.android.launcher3.config.FeatureFlags.DebugFlag;
 
-import java.util.ArrayList;
-
 @TargetApi(Build.VERSION_CODES.P)
 public class DeviceFlag extends DebugFlag {
 
     public static final String NAMESPACE_LAUNCHER = "launcher";
 
     private final boolean mDefaultValueInCode;
-    ArrayList<Runnable> mListeners;
 
     public DeviceFlag(String key, boolean defaultValue, String description) {
         super(key, getDeviceValue(key, defaultValue), description);
@@ -44,53 +40,11 @@
     }
 
     @Override
-    public void initialize(Context context) {
-        super.initialize(context);
-        if (mListeners == null) {
-            mListeners = new ArrayList<>();
-            registerDeviceConfigChangedListener(context);
-        }
-    }
-
-    @Override
-    public void addChangeListener(Context context, Runnable r) {
-        if (mListeners == null) {
-            initialize(context);
-        }
-        mListeners.add(r);
-    }
-
-    @Override
-    public void removeChangeListener(Runnable r) {
-        if (mListeners == null) {
-            return;
-        }
-        mListeners.remove(r);
-    }
-
-    @Override
     public boolean get() {
         // Override this method in order to let Robolectric ShadowDeviceFlag to stub it.
         return super.get();
     }
 
-    private void registerDeviceConfigChangedListener(Context context) {
-        DeviceConfig.addOnPropertiesChangedListener(
-                NAMESPACE_LAUNCHER,
-                context.getMainExecutor(),
-                properties -> {
-                    if (!NAMESPACE_LAUNCHER.equals(properties.getNamespace())
-                            || !properties.getKeyset().contains(key)) {
-                        return;
-                    }
-                    defaultValue = getDeviceValue(key, mDefaultValueInCode);
-                    initialize(context);
-                    for (Runnable r: mListeners) {
-                        r.run();
-                    }
-                });
-    }
-
     protected static boolean getDeviceValue(String key, boolean defaultValue) {
         return DeviceConfig.getBoolean(NAMESPACE_LAUNCHER, key, defaultValue);
     }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index ec9893c..2009cd7 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -17,7 +17,6 @@
 
 import static android.view.accessibility.AccessibilityEvent.TYPE_VIEW_FOCUSED;
 
-import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_HOTSEAT;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_APPLICATION;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
@@ -55,7 +54,6 @@
 import com.android.launcher3.logging.StatsLogManager.StatsLogger;
 import com.android.launcher3.model.BgDataModel.FixedContainerItems;
 import com.android.launcher3.model.data.ItemInfo;
-import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.statemanager.StateManager.AtomicAnimationFactory;
 import com.android.launcher3.uioverrides.states.QuickstepAtomicAnimationFactory;
@@ -84,7 +82,6 @@
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.util.ArrayList;
-import java.util.List;
 import java.util.Objects;
 import java.util.stream.Stream;
 
@@ -231,15 +228,6 @@
     }
 
     @Override
-    public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) {
-        super.bindWorkspaceItemsChanged(updated);
-        if (getTaskbarUIController() != null && updated.stream()
-                .filter(w -> w.container == CONTAINER_HOTSEAT).findFirst().isPresent()) {
-            getTaskbarUIController().onHotseatUpdated();
-        }
-    }
-
-    @Override
     public void onDestroy() {
         super.onDestroy();
         mHotseatPredictionController.destroy();
diff --git a/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java b/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
index 65dba33..1548268 100644
--- a/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
+++ b/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
@@ -72,14 +72,20 @@
             mForegroundProperties.init(
                     mOriginalForeground.getConstantState().newDrawable().mutate());
             setForeground(mForegroundProperties.mDrawable);
-            mSourceView.setForeground(null);
+            Drawable clipPlaceholder =
+                    mOriginalForeground.getConstantState().newDrawable().mutate();
+            clipPlaceholder.setAlpha(0);
+            mSourceView.setForeground(clipPlaceholder);
         }
         if (isSupportedDrawable(backgroundView.getBackground())) {
             mOriginalBackground = backgroundView.getBackground();
             mBackgroundProperties.init(
                     mOriginalBackground.getConstantState().newDrawable().mutate());
             setBackground(mBackgroundProperties.mDrawable);
-            mSourceView.setBackground(null);
+            Drawable clipPlaceholder =
+                    mOriginalBackground.getConstantState().newDrawable().mutate();
+            clipPlaceholder.setAlpha(0);
+            mSourceView.setBackground(clipPlaceholder);
         } else if (mOriginalForeground == null) {
             mFallbackDrawable.setColor(fallbackBackgroundColor);
             setBackground(mFallbackDrawable);
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 25b98d7..aee5ff8 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -912,8 +912,8 @@
             TaskViewUtils.composeRecentsLaunchAnimator(anim, taskView, apps, wallpaper, nonApps,
                     true /* launcherClosing */, mActivity.getStateManager(), this,
                     getDepthController());
-            anim.start();
         }
+        anim.start();
     }
 
     private void updateTaskStartIndex(View affectingView) {
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index b272def..2e154f6 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -794,7 +794,7 @@
         mIconView.setRotation(orientationHandler.getDegreesRotated());
         snapshotParams.topMargin = deviceProfile.overviewTaskThumbnailTopMarginPx;
         mSnapshotView.setLayoutParams(snapshotParams);
-        getThumbnail().getTaskOverlay().updateOrientationState(orientationState);
+        mSnapshotView.getTaskOverlay().updateOrientationState(orientationState);
     }
 
     private void setIconAndDimTransitionProgress(float progress, boolean invert) {
@@ -958,6 +958,7 @@
 
     private void setNonGridScale(float nonGridScale) {
         mNonGridScale = nonGridScale;
+        updateCornerRadius();
         applyScale();
     }
 
@@ -1296,18 +1297,21 @@
         progress = Utilities.boundToRange(progress, 0, 1);
         mFullscreenProgress = progress;
         mIconView.setVisibility(progress < 1 ? VISIBLE : INVISIBLE);
-        getThumbnail().getTaskOverlay().setFullscreenProgress(progress);
+        mSnapshotView.getTaskOverlay().setFullscreenProgress(progress);
 
-        TaskThumbnailView thumbnail = getThumbnail();
-        updateCurrentFullscreenParams(thumbnail.getPreviewPositionHelper());
+        updateCornerRadius();
 
-        thumbnail.setFullscreenParams(mCurrentFullscreenParams);
+        mSnapshotView.setFullscreenParams(mCurrentFullscreenParams);
         mOutlineProvider.updateParams(
                 mCurrentFullscreenParams,
                 mActivity.getDeviceProfile().overviewTaskThumbnailTopMarginPx);
         invalidateOutline();
     }
 
+    private void updateCornerRadius() {
+        updateCurrentFullscreenParams(mSnapshotView.getPreviewPositionHelper());
+    }
+
     void updateCurrentFullscreenParams(PreviewPositionHelper previewPositionHelper) {
         if (getRecentsView() == null) {
             return;
@@ -1315,7 +1319,7 @@
         mCurrentFullscreenParams.setProgress(
                 mFullscreenProgress,
                 getRecentsView().getScaleX(),
-                getScaleX(),
+                mNonGridScale,
                 getWidth(), mActivity.getDeviceProfile(),
                 previewPositionHelper);
     }
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index 00278e4..f4447b1 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -2147,7 +2147,7 @@
         mShakeAnimators.clear();
     }
 
-    private void commitTempPlacement() {
+    private void commitTempPlacement(View dragView) {
         mTmpOccupied.copyTo(mOccupied);
 
         int screenId = Launcher.cast(mActivity).getWorkspace().getIdForScreen(this);
@@ -2165,7 +2165,7 @@
             ItemInfo info = (ItemInfo) child.getTag();
             // We do a null check here because the item info can be null in the case of the
             // AllApps button in the hotseat.
-            if (info != null) {
+            if (info != null && child != dragView) {
                 final boolean requiresDbUpdate = (info.cellX != lp.tmpCellX
                         || info.cellY != lp.tmpCellY || info.spanX != lp.cellHSpan
                         || info.spanY != lp.cellVSpan);
@@ -2327,7 +2327,7 @@
             animateItemsToSolution(swapSolution, dragView, commit);
 
             if (commit) {
-                commitTempPlacement();
+                commitTempPlacement(null);
                 completeAndClearReorderPreviewAnimations();
                 setItemPlacementDirty(false);
             } else {
@@ -2421,7 +2421,8 @@
 
                 if (!DESTRUCTIVE_REORDER &&
                         (mode == MODE_ON_DROP || mode == MODE_ON_DROP_EXTERNAL)) {
-                    commitTempPlacement();
+                    // Since the temp solution didn't update dragView, don't commit it either
+                    commitTempPlacement(dragView);
                     completeAndClearReorderPreviewAnimations();
                     setItemPlacementDirty(false);
                 } else {
@@ -2877,7 +2878,7 @@
                 directionVector, null, false, configuration).isSolution) {
             if (commitConfig) {
                 copySolutionToTempState(configuration, null);
-                commitTempPlacement();
+                commitTempPlacement(null);
                 // undo marking cells occupied since there is actually nothing being placed yet.
                 mOccupied.markCells(0, mCountY - 1, mCountX, 1, false);
             }
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 89b44a3..78a8a97 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -48,7 +48,6 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WIDGET_RECONFIGURED;
 import static com.android.launcher3.model.ItemInstallQueue.FLAG_ACTIVITY_PAUSED;
 import static com.android.launcher3.model.ItemInstallQueue.FLAG_DRAG_AND_DROP;
-import static com.android.launcher3.model.ItemInstallQueue.FLAG_LOADER_RUNNING;
 import static com.android.launcher3.popup.SystemShortcut.APP_INFO;
 import static com.android.launcher3.popup.SystemShortcut.INSTALL;
 import static com.android.launcher3.popup.SystemShortcut.WIDGETS;
@@ -596,7 +595,7 @@
         }
 
         onDeviceProfileInitiated();
-        mModelWriter = mModel.getWriter(getDeviceProfile().isVerticalBarLayout(), true);
+        mModelWriter = mModel.getWriter(getDeviceProfile().isVerticalBarLayout(), true, this);
     }
 
     public RotationHelper getRotationHelper() {
@@ -2598,9 +2597,6 @@
             mPendingActivityResult = null;
         }
 
-        ItemInstallQueue.INSTANCE.get(this)
-                .resumeModelPush(FLAG_LOADER_RUNNING);
-
         int currentPage = pagesBoundFirst != null && !pagesBoundFirst.isEmpty()
                 ? pagesBoundFirst.getArray().get(0) : PagedView.INVALID_PAGE;
         // When undoing the removal of the last item on a page, return to that page.
@@ -2677,7 +2673,7 @@
     @Override
     public void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated) {
         if (!updated.isEmpty()) {
-            mWorkspace.updateShortcuts(updated);
+            mWorkspace.updateWorkspaceItems(updated, this);
             PopupContainerWithArrow.dismissInvalidPopup(this);
         }
     }
@@ -2689,7 +2685,7 @@
      */
     @Override
     public void bindRestoreItemsChange(HashSet<ItemInfo> updates) {
-        mWorkspace.updateRestoreItems(updates);
+        mWorkspace.updateRestoreItems(updates, this);
     }
 
     /**
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index eef3980..6966abf 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -144,9 +144,10 @@
         enqueueModelUpdateTask(new AddWorkspaceItemsTask(itemList));
     }
 
-    public ModelWriter getWriter(boolean hasVerticalHotseat, boolean verifyChanges) {
+    public ModelWriter getWriter(boolean hasVerticalHotseat, boolean verifyChanges,
+            @Nullable Callbacks owner) {
         return new ModelWriter(mApp.getContext(), this, mBgDataModel,
-                hasVerticalHotseat, verifyChanges);
+                hasVerticalHotseat, verifyChanges, owner);
     }
 
     @Override
@@ -329,7 +330,7 @@
     public boolean addCallbacksAndLoad(Callbacks callbacks) {
         synchronized (mLock) {
             addCallbacks(callbacks);
-            return startLoader();
+            return startLoader(new Callbacks[] { callbacks });
 
         }
     }
@@ -349,26 +350,32 @@
      * @return true if the page could be bound synchronously.
      */
     public boolean startLoader() {
+        return startLoader(new Callbacks[0]);
+    }
+
+    private boolean startLoader(Callbacks[] newCallbacks) {
         // Enable queue before starting loader. It will get disabled in Launcher#finishBindingItems
         ItemInstallQueue.INSTANCE.get(mApp.getContext())
                 .pauseModelPush(ItemInstallQueue.FLAG_LOADER_RUNNING);
         synchronized (mLock) {
-            // Don't bother to start the thread if we know it's not going to do anything
-            final Callbacks[] callbacksList = getCallbacks();
+            // If there is already one running, tell it to stop.
+            boolean wasRunning = stopLoader();
+            boolean bindDirectly = mModelLoaded && !mIsLoaderTaskRunning;
+            boolean bindAllCallbacks = wasRunning || !bindDirectly || newCallbacks.length == 0;
+            final Callbacks[] callbacksList = bindAllCallbacks ? getCallbacks() : newCallbacks;
+
             if (callbacksList.length > 0) {
                 // Clear any pending bind-runnables from the synchronized load process.
                 for (Callbacks cb : callbacksList) {
                     MAIN_EXECUTOR.execute(cb::clearPendingBinds);
                 }
 
-                // If there is already one running, tell it to stop.
-                stopLoader();
                 LoaderResults loaderResults = new LoaderResults(
                         mApp, mBgDataModel, mBgAllAppsList, callbacksList);
-                if (mModelLoaded && !mIsLoaderTaskRunning) {
+                if (bindDirectly) {
                     // Divide the set of loaded items into those that we are binding synchronously,
                     // and everything else that is to be bound normally (asynchronously).
-                    loaderResults.bindWorkspace();
+                    loaderResults.bindWorkspace(bindAllCallbacks);
                     // For now, continue posting the binding of AllApps as there are other
                     // issues that arise from that.
                     loaderResults.bindAllApps();
@@ -387,7 +394,7 @@
      * If there is already a loader task running, tell it to stop.
      * @return true if an existing loader was stopped.
      */
-    public boolean stopLoader() {
+    private boolean stopLoader() {
         synchronized (mLock) {
             LoaderTask oldTask = mLoaderTask;
             mLoaderTask = null;
diff --git a/src/com/android/launcher3/PagedView.java b/src/com/android/launcher3/PagedView.java
index 1555e98..20f5f9b 100644
--- a/src/com/android/launcher3/PagedView.java
+++ b/src/com/android/launcher3/PagedView.java
@@ -1087,26 +1087,25 @@
 
     protected float getScrollProgress(int screenCenter, View v, int page) {
         final int halfScreenSize = getMeasuredWidth() / 2;
-
         int delta = screenCenter - (getScrollForPage(page) + halfScreenSize);
-        int count = getChildCount();
+        int panelCount = getPanelCount();
+        int pageCount = getChildCount();
 
-        final int totalDistance;
-
-        int adjacentPage = page + 1;
+        int adjacentPage = page + panelCount;
         if ((delta < 0 && !mIsRtl) || (delta > 0 && mIsRtl)) {
-            adjacentPage = page - 1;
+            adjacentPage = page - panelCount;
         }
 
-        if (adjacentPage < 0 || adjacentPage > count - 1) {
-            totalDistance = v.getMeasuredWidth() + mPageSpacing;
+        final int totalDistance;
+        if (adjacentPage < 0 || adjacentPage > pageCount - 1) {
+            totalDistance = (v.getMeasuredWidth() + mPageSpacing) * panelCount;
         } else {
             totalDistance = Math.abs(getScrollForPage(adjacentPage) - getScrollForPage(page));
         }
 
         float scrollProgress = delta / (totalDistance * 1.0f);
         scrollProgress = Math.min(scrollProgress, MAX_SCROLL_PROGRESS);
-        scrollProgress = Math.max(scrollProgress, - MAX_SCROLL_PROGRESS);
+        scrollProgress = Math.max(scrollProgress, -MAX_SCROLL_PROGRESS);
         return scrollProgress;
     }
 
@@ -1649,7 +1648,7 @@
 
     public boolean scrollLeft() {
         if (getNextPage() > 0) {
-            snapToPage(getNextPage() - 1);
+            snapToPage(getNextPage() - getPanelCount());
             return true;
         }
         return mAllowOverScroll;
@@ -1657,7 +1656,7 @@
 
     public boolean scrollRight() {
         if (getNextPage() < getChildCount() - 1) {
-            snapToPage(getNextPage() + 1);
+            snapToPage(getNextPage() + getPanelCount());
             return true;
         }
         return mAllowOverScroll;
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 5689394..a585be6 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -83,7 +83,6 @@
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.folder.PreviewBackground;
 import com.android.launcher3.graphics.DragPreviewProvider;
-import com.android.launcher3.graphics.PreloadIconDrawable;
 import com.android.launcher3.icons.BitmapRenderer;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.logger.LauncherAtom;
@@ -105,6 +104,7 @@
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.ItemInfoMatcher;
+import com.android.launcher3.util.LauncherBindableItemsContainer;
 import com.android.launcher3.util.OverlayEdgeEffect;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.RunnableList;
@@ -123,7 +123,6 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashSet;
 import java.util.List;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
@@ -136,7 +135,7 @@
 public class Workspace extends PagedView<WorkspacePageIndicator>
         implements DropTarget, DragSource, View.OnTouchListener,
         DragController.DragListener, Insettable, StateHandler<LauncherState>,
-        WorkspaceLayoutManager {
+        WorkspaceLayoutManager, LauncherBindableItemsContainer {
 
     /** The value that {@link #mTransitionProgress} must be greater than for
      * {@link #transitionStateShouldAllowDrop()} to return true. */
@@ -3009,9 +3008,9 @@
      * @param user The user of the app to match.
      */
     public View getFirstMatchForAppClose(int preferredItemId, String packageName, UserHandle user) {
-        final Workspace.ItemOperator preferredItem = (ItemInfo info, View view) ->
+        final ItemOperator preferredItem = (ItemInfo info, View view) ->
                 info != null && info.id == preferredItemId;
-        final Workspace.ItemOperator preferredItemInFolder = (info, view) -> {
+        final ItemOperator preferredItemInFolder = (info, view) -> {
             if (info instanceof FolderInfo) {
                 FolderInfo folderInfo = (FolderInfo) info;
                 for (WorkspaceItemInfo shortcutInfo : folderInfo.contents) {
@@ -3022,14 +3021,14 @@
             }
             return false;
         };
-        final Workspace.ItemOperator packageAndUserAndApp = (ItemInfo info, View view) ->
+        final ItemOperator packageAndUserAndApp = (ItemInfo info, View view) ->
                 info != null
                         && info.itemType == ITEM_TYPE_APPLICATION
                         && info.user.equals(user)
                         && info.getTargetComponent() != null
                         && TextUtils.equals(info.getTargetComponent().getPackageName(),
                                 packageName);
-        final Workspace.ItemOperator packageAndUserAndAppInFolder = (info, view) -> {
+        final ItemOperator packageAndUserAndAppInFolder = (info, view) -> {
             if (info instanceof FolderInfo) {
                 FolderInfo folderInfo = (FolderInfo) info;
                 for (WorkspaceItemInfo shortcutInfo : folderInfo.contents) {
@@ -3148,22 +3147,7 @@
         stripEmptyScreens();
     }
 
-    public interface ItemOperator {
-        /**
-         * Process the next itemInfo, possibly with side-effect on the next item.
-         *
-         * @param info info for the shortcut
-         * @param view view for the shortcut
-         * @return true if done, false to continue the map
-         */
-        boolean evaluate(ItemInfo info, View view);
-    }
-
-    /**
-     * Map the operator over the shortcuts and widgets, return the first-non-null value.
-     *
-     * @param op the operator to map over the shortcuts
-     */
+    @Override
     public void mapOverItems(ItemOperator op) {
         for (CellLayout layout : getWorkspaceAndHotseatCellLayouts()) {
             if (mapOverCellLayout(layout, op) != null) {
@@ -3189,31 +3173,6 @@
         return null;
     }
 
-    void updateShortcuts(List<WorkspaceItemInfo> shortcuts) {
-        final HashSet<WorkspaceItemInfo> updates = new HashSet<>(shortcuts);
-        ItemOperator op = (info, v) -> {
-            if (v instanceof BubbleTextView && updates.contains(info)) {
-                WorkspaceItemInfo si = (WorkspaceItemInfo) info;
-                BubbleTextView shortcut = (BubbleTextView) v;
-                Drawable oldIcon = shortcut.getIcon();
-                boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable)
-                        && ((PreloadIconDrawable) oldIcon).hasNotCompleted();
-                shortcut.applyFromWorkspaceItem(si, si.isPromise() != oldPromiseState);
-            } else if (info instanceof FolderInfo && v instanceof FolderIcon) {
-                ((FolderIcon) v).updatePreviewItems(updates::contains);
-            }
-
-            // Iterate all items
-            return false;
-        };
-
-        mapOverItems(op);
-        Folder openFolder = Folder.getOpen(mLauncher);
-        if (openFolder != null) {
-            openFolder.iterateOverItems(op);
-        }
-    }
-
     public void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
         final PackageUserKey packageUserKey = new PackageUserKey(null, null);
         Predicate<ItemInfo> matcher = info -> !packageUserKey.updateFromItemInfo(info)
@@ -3253,28 +3212,6 @@
         removeItemsByMatcher(matcher);
     }
 
-    public void updateRestoreItems(final HashSet<ItemInfo> updates) {
-        ItemOperator op = (info, v) -> {
-            if (info instanceof WorkspaceItemInfo && v instanceof BubbleTextView
-                    && updates.contains(info)) {
-                ((BubbleTextView) v).applyLoadingState(false /* promiseStateChanged */);
-            } else if (v instanceof PendingAppWidgetHostView
-                    && info instanceof LauncherAppWidgetInfo
-                    && updates.contains(info)) {
-                ((PendingAppWidgetHostView) v).applyState();
-            } else if (v instanceof FolderIcon && info instanceof FolderInfo) {
-                ((FolderIcon) v).updatePreviewItems(updates::contains);
-            }
-            // process all the shortcuts
-            return false;
-        };
-        mapOverItems(op);
-        Folder folder = Folder.getOpen(mLauncher);
-        if (folder != null) {
-            folder.iterateOverItems(op);
-        }
-    }
-
     public void widgetsRestored(final ArrayList<LauncherAppWidgetInfo> changedInfo) {
         if (!changedInfo.isEmpty()) {
             DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo,
diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java
index 516af59..d2c71b2 100644
--- a/src/com/android/launcher3/allapps/AllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java
@@ -477,10 +477,6 @@
         } else {
             mAH[AdapterHolder.MAIN].setup(findViewById(R.id.apps_list_view), null);
             mAH[AdapterHolder.WORK].recyclerView = null;
-            if (mWorkModeSwitch != null) {
-                ((ViewGroup) mWorkModeSwitch.getParent()).removeView(mWorkModeSwitch);
-                mWorkModeSwitch = null;
-            }
         }
         setupHeader();
 
@@ -532,7 +528,7 @@
 
     @Override
     public void onActivePageChanged(int currentActivePage) {
-        mHeader.setMainActive(currentActivePage == 0);
+        mHeader.setMainActive(currentActivePage == AdapterHolder.MAIN);
         if (mAH[currentActivePage].recyclerView != null) {
             mAH[currentActivePage].recyclerView.bindFastScrollbar();
         }
@@ -541,6 +537,14 @@
             mWorkModeSwitch.setWorkTabVisible(currentActivePage == AdapterHolder.WORK
                     && mAllAppsStore.hasModelFlag(
                     FLAG_HAS_SHORTCUT_PERMISSION | FLAG_QUIET_MODE_CHANGE_PERMISSION));
+
+            if (currentActivePage == AdapterHolder.WORK) {
+                if (mWorkModeSwitch.getParent() == null) {
+                    addView(mWorkModeSwitch);
+                }
+            } else {
+                removeView(mWorkModeSwitch);
+            }
         }
     }
 
diff --git a/src/com/android/launcher3/compat/AccessibilityManagerCompat.java b/src/com/android/launcher3/compat/AccessibilityManagerCompat.java
index 30c3417..92bc19a 100644
--- a/src/com/android/launcher3/compat/AccessibilityManagerCompat.java
+++ b/src/com/android/launcher3/compat/AccessibilityManagerCompat.java
@@ -87,6 +87,7 @@
         if (accessibilityManager == null) return;
 
         sendEventToTest(accessibilityManager, context, TestProtocol.PAUSE_DETECTED_MESSAGE, null);
+        Log.d(TestProtocol.HOME_TO_OVERVIEW_FLAKY, "sendPauseDetectedEventToTest");
     }
 
     private static void sendEventToTest(
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 1fe50f8..1779ddb 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -295,7 +295,7 @@
     public static class BooleanFlag {
 
         public final String key;
-        public boolean defaultValue;
+        public final boolean defaultValue;
 
         public BooleanFlag(String key, boolean defaultValue) {
             this.key = key;
@@ -314,16 +314,12 @@
         protected StringBuilder appendProps(StringBuilder src) {
             return src.append(key).append(", defaultValue=").append(defaultValue);
         }
-
-        public void addChangeListener(Context context, Runnable r) { }
-
-        public void removeChangeListener(Runnable r) {}
     }
 
     public static class DebugFlag extends BooleanFlag {
 
         public final String description;
-        private boolean mCurrentValue;
+        protected boolean mCurrentValue;
 
         public DebugFlag(String key, boolean defaultValue, String description) {
             super(key, defaultValue);
diff --git a/src/com/android/launcher3/dragndrop/AddItemActivity.java b/src/com/android/launcher3/dragndrop/AddItemActivity.java
index 55be4a4..6bd6261 100644
--- a/src/com/android/launcher3/dragndrop/AddItemActivity.java
+++ b/src/com/android/launcher3/dragndrop/AddItemActivity.java
@@ -189,10 +189,18 @@
         if (appWidgetHostView != null) {
             bounds = new Rect();
             appWidgetHostView.getSourceVisualDragBounds(bounds);
-            bounds.offset(appWidgetHostView.getLeft() - (int) mLastTouchPos.x,
-                    appWidgetHostView.getTop() - (int) mLastTouchPos.y);
-            listener = new PinItemDragListener(mRequest, bounds,
-                    appWidgetHostView.getMeasuredWidth(), appWidgetHostView.getMeasuredWidth());
+            float appWidgetHostViewScale = mWidgetCell.getAppWidgetHostViewScale();
+            int xOffset =
+                    appWidgetHostView.getLeft() - (int) (mLastTouchPos.x * appWidgetHostViewScale);
+            int yOffset = appWidgetHostView.getTop()
+                    - (int) (mLastTouchPos.y * mWidgetCell.getAppWidgetHostViewScale());
+            bounds.offset(xOffset, yOffset);
+            listener = new PinItemDragListener(
+                    mRequest,
+                    bounds,
+                    appWidgetHostView.getMeasuredWidth(),
+                    appWidgetHostView.getMeasuredWidth(),
+                    appWidgetHostView.getScaleX());
         } else {
             bounds = img.getBitmapBounds();
             bounds.offset(img.getLeft() - (int) mLastTouchPos.x,
diff --git a/src/com/android/launcher3/dragndrop/DragView.java b/src/com/android/launcher3/dragndrop/DragView.java
index 1f93730..f2ab96c 100644
--- a/src/com/android/launcher3/dragndrop/DragView.java
+++ b/src/com/android/launcher3/dragndrop/DragView.java
@@ -148,6 +148,12 @@
 
         addView(content, new LayoutParams(width, height));
 
+        // If there is already a scale set on the content, we don't want to clip the children.
+        if (content.getScaleX() != 1 || content.getScaleY() != 1) {
+            setClipChildren(false);
+            setClipToPadding(false);
+        }
+
         final float scale = (width + finalScaleDps) / width;
 
         // Set the initial scale to avoid any jumps
diff --git a/src/com/android/launcher3/dragndrop/PinItemDragListener.java b/src/com/android/launcher3/dragndrop/PinItemDragListener.java
index 2bdf8a0..af43ae8 100644
--- a/src/com/android/launcher3/dragndrop/PinItemDragListener.java
+++ b/src/com/android/launcher3/dragndrop/PinItemDragListener.java
@@ -48,12 +48,19 @@
 
     private final PinItemRequest mRequest;
     private final CancellationSignal mCancelSignal;
+    private final float mPreviewScale;
 
     public PinItemDragListener(PinItemRequest request, Rect previewRect,
             int previewBitmapWidth, int previewViewWidth) {
+        this(request, previewRect, previewBitmapWidth, previewViewWidth, /* previewScale= */ 1f);
+    }
+
+    public PinItemDragListener(PinItemRequest request, Rect previewRect,
+            int previewBitmapWidth, int previewViewWidth, float previewScale) {
         super(previewRect, previewBitmapWidth, previewViewWidth);
         mRequest = request;
         mCancelSignal = new CancellationSignal();
+        mPreviewScale = previewScale;
     }
 
     @Override
@@ -98,7 +105,7 @@
 
         PendingItemDragHelper dragHelper = new PendingItemDragHelper(view);
         if (mRequest.getRequestType() == PinItemRequest.REQUEST_TYPE_APPWIDGET) {
-            dragHelper.setRemoteViewsPreview(getPreview(mRequest));
+            dragHelper.setRemoteViewsPreview(getPreview(mRequest), mPreviewScale);
         }
         return dragHelper;
     }
diff --git a/src/com/android/launcher3/folder/Folder.java b/src/com/android/launcher3/folder/Folder.java
index 22bb56c..7187188 100644
--- a/src/com/android/launcher3/folder/Folder.java
+++ b/src/com/android/launcher3/folder/Folder.java
@@ -75,7 +75,6 @@
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace.ItemOperator;
 import com.android.launcher3.accessibility.AccessibleDragListenerAdapter;
 import com.android.launcher3.accessibility.FolderAccessibilityHelper;
 import com.android.launcher3.anim.KeyboardInsetAnimationCallback;
@@ -94,6 +93,7 @@
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.pageindicators.PageIndicatorDots;
 import com.android.launcher3.util.Executors;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.views.ActivityContext;
 import com.android.launcher3.views.BaseDragLayer;
@@ -1196,8 +1196,7 @@
     }
 
     void replaceFolderWithFinalItem() {
-        mLauncherDelegate.replaceFolderWithFinalItem(this);
-        mDestroyed = true;
+        mDestroyed = mLauncherDelegate.replaceFolderWithFinalItem(this);
     }
 
     public boolean isDestroyed() {
diff --git a/src/com/android/launcher3/folder/FolderIcon.java b/src/com/android/launcher3/folder/FolderIcon.java
index d076be6..f005b61 100644
--- a/src/com/android/launcher3/folder/FolderIcon.java
+++ b/src/com/android/launcher3/folder/FolderIcon.java
@@ -679,6 +679,7 @@
 
     @Override
     public void onAdd(WorkspaceItemInfo item, int rank) {
+        updatePreviewItems(false);
         boolean wasDotted = mDotInfo.hasDot();
         mDotInfo.addDotInfo(mActivity.getDotInfoForItem(item));
         boolean isDotted = mDotInfo.hasDot();
@@ -690,6 +691,7 @@
 
     @Override
     public void onRemove(List<WorkspaceItemInfo> items) {
+        updatePreviewItems(false);
         boolean wasDotted = mDotInfo.hasDot();
         items.stream().map(mActivity::getDotInfoForItem).forEach(mDotInfo::subtractDotInfo);
         boolean isDotted = mDotInfo.hasDot();
diff --git a/src/com/android/launcher3/folder/FolderPagedView.java b/src/com/android/launcher3/folder/FolderPagedView.java
index 3d2884a..65991e4 100644
--- a/src/com/android/launcher3/folder/FolderPagedView.java
+++ b/src/com/android/launcher3/folder/FolderPagedView.java
@@ -41,12 +41,12 @@
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.Workspace.ItemOperator;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.pageindicators.PageIndicatorDots;
 import com.android.launcher3.touch.ItemClickHandler;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.util.ViewCache;
 import com.android.launcher3.views.ActivityContext;
diff --git a/src/com/android/launcher3/folder/LauncherDelegate.java b/src/com/android/launcher3/folder/LauncherDelegate.java
index f7d8e8c..e599e8c 100644
--- a/src/com/android/launcher3/folder/LauncherDelegate.java
+++ b/src/com/android/launcher3/folder/LauncherDelegate.java
@@ -93,7 +93,7 @@
         }
     }
 
-    void replaceFolderWithFinalItem(Folder folder) {
+    boolean replaceFolderWithFinalItem(Folder folder) {
         // Add the last remaining child to the workspace in place of the folder
         Runnable onCompleteRunnable = new Runnable() {
             @Override
@@ -147,6 +147,7 @@
         } else {
             onCompleteRunnable.run();
         }
+        return true;
     }
 
 
@@ -191,7 +192,7 @@
         ModelWriter getModelWriter() {
             if (mWriter == null) {
                 mWriter = LauncherAppState.getInstance((Context) mContext).getModel()
-                        .getWriter(false, false);
+                        .getWriter(false, false, null);
             }
             return mWriter;
         }
@@ -205,7 +206,9 @@
         }
 
         @Override
-        void replaceFolderWithFinalItem(Folder folder) { }
+        boolean replaceFolderWithFinalItem(Folder folder) {
+            return false;
+        }
 
         @Override
         boolean interceptOutsideTouch(MotionEvent ev, BaseDragLayer dl, Folder folder) {
diff --git a/src/com/android/launcher3/model/BaseLoaderResults.java b/src/com/android/launcher3/model/BaseLoaderResults.java
index 30755e3..c202d8d 100644
--- a/src/com/android/launcher3/model/BaseLoaderResults.java
+++ b/src/com/android/launcher3/model/BaseLoaderResults.java
@@ -16,6 +16,7 @@
 
 package com.android.launcher3.model;
 
+import static com.android.launcher3.model.ItemInstallQueue.FLAG_LOADER_RUNNING;
 import static com.android.launcher3.model.ModelUtils.filterCurrentWorkspaceItems;
 import static com.android.launcher3.model.ModelUtils.sortWorkspaceItemsSpatially;
 import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
@@ -73,7 +74,7 @@
     /**
      * Binds all loaded data to actual views on the main thread.
      */
-    public void bindWorkspace() {
+    public void bindWorkspace(boolean incrementBindId) {
         // Save a copy of all the bg-thread collections
         ArrayList<ItemInfo> workspaceItems = new ArrayList<>();
         ArrayList<LauncherAppWidgetInfo> appWidgets = new ArrayList<>();
@@ -85,7 +86,9 @@
             appWidgets.addAll(mBgDataModel.appWidgets);
             orderedScreenIds.addAll(mBgDataModel.collectWorkspaceScreens());
             mBgDataModel.extraItems.forEach(extraItems::add);
-            mBgDataModel.lastBindId++;
+            if (incrementBindId) {
+                mBgDataModel.lastBindId++;
+            }
             mMyBindingId = mBgDataModel.lastBindId;
         }
 
@@ -217,7 +220,11 @@
             bindAppWidgets(otherAppWidgets, pendingExecutor);
             executeCallbacksTask(c -> c.finishBindingItems(currentScreenIndices), pendingExecutor);
             pendingExecutor.execute(
-                    () -> MODEL_EXECUTOR.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT));
+                    () -> {
+                        MODEL_EXECUTOR.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT);
+                        ItemInstallQueue.INSTANCE.get(mApp.getContext())
+                                .resumeModelPush(FLAG_LOADER_RUNNING);
+                    });
 
             executeCallbacksTask(
                     c -> {
diff --git a/src/com/android/launcher3/model/BaseModelUpdateTask.java b/src/com/android/launcher3/model/BaseModelUpdateTask.java
index ad553d5..a3a4717 100644
--- a/src/com/android/launcher3/model/BaseModelUpdateTask.java
+++ b/src/com/android/launcher3/model/BaseModelUpdateTask.java
@@ -90,7 +90,7 @@
     public ModelWriter getModelWriter() {
         // Updates from model task, do not deal with icon position in hotseat. Also no need to
         // verify changes as the ModelTasks always push the changes to callbacks
-        return mModel.getWriter(false /* hasVerticalHotseat */, false /* verifyChanges */);
+        return mModel.getWriter(false /* hasVerticalHotseat */, false /* verifyChanges */, null);
     }
 
     public void bindUpdatedWorkspaceItems(List<WorkspaceItemInfo> allUpdates) {
diff --git a/src/com/android/launcher3/model/BgDataModel.java b/src/com/android/launcher3/model/BgDataModel.java
index ba825ca..dd4c3c3 100644
--- a/src/com/android/launcher3/model/BgDataModel.java
+++ b/src/com/android/launcher3/model/BgDataModel.java
@@ -477,6 +477,11 @@
                 ArrayList<ItemInfo> addNotAnimated, ArrayList<ItemInfo> addAnimated) { }
 
         /**
+         * Called when some persistent property of an item is modified
+         */
+        default void bindItemsModified(List<ItemInfo> items) { }
+
+        /**
          * Binds updated incremental download progress
          */
         default void bindIncrementalDownloadProgressUpdated(AppInfo app) { }
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index d5b5452..31ca6e7 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -210,7 +210,7 @@
             }
 
             verifyNotStopped();
-            mResults.bindWorkspace();
+            mResults.bindWorkspace(true /* incrementBindId */);
             logASplit(logger, "bindWorkspace");
 
             mModelDelegate.workspaceLoadComplete();
diff --git a/src/com/android/launcher3/model/ModelWriter.java b/src/com/android/launcher3/model/ModelWriter.java
index 2b93118..55edfd4 100644
--- a/src/com/android/launcher3/model/ModelWriter.java
+++ b/src/com/android/launcher3/model/ModelWriter.java
@@ -23,12 +23,13 @@
 import android.content.ContentValues;
 import android.content.Context;
 import android.net.Uri;
-import android.os.Handler;
-import android.os.Looper;
 import android.util.Log;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel;
+import com.android.launcher3.LauncherModel.CallbackTask;
 import com.android.launcher3.LauncherProvider;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.LauncherSettings.Favorites;
@@ -36,19 +37,22 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.FileLog;
+import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.model.data.FolderInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.util.ContentWriter;
+import com.android.launcher3.util.Executors;
 import com.android.launcher3.util.ItemInfoMatcher;
+import com.android.launcher3.util.LooperExecutor;
 import com.android.launcher3.widget.LauncherAppWidgetHost;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
-import java.util.concurrent.Executor;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
@@ -63,7 +67,10 @@
     private final Context mContext;
     private final LauncherModel mModel;
     private final BgDataModel mBgDataModel;
-    private final Handler mUiHandler;
+    private final LooperExecutor mUiExecutor;
+
+    @Nullable
+    private final Callbacks mOwner;
 
     private final boolean mHasVerticalHotseat;
     private final boolean mVerifyChanges;
@@ -73,13 +80,15 @@
     private boolean mPreparingToUndo;
 
     public ModelWriter(Context context, LauncherModel model, BgDataModel dataModel,
-            boolean hasVerticalHotseat, boolean verifyChanges) {
+            boolean hasVerticalHotseat, boolean verifyChanges,
+            @Nullable Callbacks owner) {
         mContext = context;
         mModel = model;
         mBgDataModel = dataModel;
         mHasVerticalHotseat = hasVerticalHotseat;
         mVerifyChanges = verifyChanges;
-        mUiHandler = new Handler(Looper.getMainLooper());
+        mOwner = owner;
+        mUiExecutor = Executors.MAIN_EXECUTOR;
     }
 
     private void updateItemInfoProps(
@@ -162,6 +171,8 @@
     public void moveItemInDatabase(final ItemInfo item,
             int container, int screenId, int cellX, int cellY) {
         updateItemInfoProps(item, container, screenId, cellX, cellY);
+        notifyItemModified(item);
+
         enqueueDeleteRunnable(new UpdateItemRunnable(item, () ->
                 new ContentWriter(mContext)
                         .put(Favorites.CONTAINER, item.container)
@@ -178,6 +189,7 @@
     public void moveItemsInDatabase(final ArrayList<ItemInfo> items, int container, int screen) {
         ArrayList<ContentValues> contentValues = new ArrayList<>();
         int count = items.size();
+        notifyOtherCallbacks(c -> c.bindItemsModified(items));
 
         for (int i = 0; i < count; i++) {
             ItemInfo item = items.get(i);
@@ -203,8 +215,9 @@
         updateItemInfoProps(item, container, screenId, cellX, cellY);
         item.spanX = spanX;
         item.spanY = spanY;
+        notifyItemModified(item);
 
-        ((Executor) MODEL_EXECUTOR).execute(new UpdateItemRunnable(item, () ->
+        MODEL_EXECUTOR.execute(new UpdateItemRunnable(item, () ->
                 new ContentWriter(mContext)
                         .put(Favorites.CONTAINER, item.container)
                         .put(Favorites.CELLX, item.cellX)
@@ -219,13 +232,18 @@
      * Update an item to the database in a specified container.
      */
     public void updateItemInDatabase(ItemInfo item) {
-        ((Executor) MODEL_EXECUTOR).execute(new UpdateItemRunnable(item, () -> {
+        notifyItemModified(item);
+        MODEL_EXECUTOR.execute(new UpdateItemRunnable(item, () -> {
             ContentWriter writer = new ContentWriter(mContext);
             item.onAddToDatabase(writer);
             return writer;
         }));
     }
 
+    private void notifyItemModified(ItemInfo item) {
+        notifyOtherCallbacks(c -> c.bindItemsModified(Collections.singletonList(item)));
+    }
+
     /**
      * Add an item to the database in a specified container. Sets the container, screen, cellX and
      * cellY fields of the item. Also assigns an ID to the item.
@@ -236,10 +254,11 @@
 
         final ContentResolver cr = mContext.getContentResolver();
         item.id = Settings.call(cr, Settings.METHOD_NEW_ITEM_ID).getInt(Settings.EXTRA_VALUE);
+        notifyOtherCallbacks(c -> c.bindItems(Collections.singletonList(item), false));
 
         ModelVerifier verifier = new ModelVerifier();
         final StackTraceElement[] stackTrace = new Throwable().getStackTrace();
-        ((Executor) MODEL_EXECUTOR).execute(() -> {
+        MODEL_EXECUTOR.execute(() -> {
             // Write the item on background thread, as some properties might have been updated in
             // the background.
             final ContentWriter writer = new ContentWriter(mContext);
@@ -281,6 +300,7 @@
                 (item) -> item.getTargetComponent() == null ? ""
                         : item.getTargetComponent().getPackageName()).collect(
                 Collectors.joining(",")), new Exception());
+        notifyDelete(items);
         enqueueDeleteRunnable(() -> {
             for (ItemInfo item : items) {
                 final Uri uri = Favorites.getContentUri(item.id);
@@ -297,6 +317,7 @@
      */
     public void deleteFolderAndContentsFromDatabase(final FolderInfo info) {
         ModelVerifier verifier = new ModelVerifier();
+        notifyDelete(Collections.singleton(info));
 
         enqueueDeleteRunnable(() -> {
             ContentResolver cr = mContext.getContentResolver();
@@ -315,6 +336,7 @@
      * Deletes the widget info and the widget id.
      */
     public void deleteWidgetInfo(final LauncherAppWidgetInfo info, LauncherAppWidgetHost host) {
+        notifyDelete(Collections.singleton(info));
         if (host != null && !info.isCustomWidget() && info.isWidgetIdAllocated()) {
             // Deleting an app widget ID is a void call but writes to disk before returning
             // to the caller...
@@ -323,6 +345,10 @@
         deleteItemFromDatabase(info);
     }
 
+    private void notifyDelete(Collection<? extends ItemInfo> items) {
+        notifyOtherCallbacks(c -> c.bindWorkspaceComponentsRemoved(ItemInfoMatcher.ofItems(items)));
+    }
+
     /**
      * Delete operations tracked using {@link #enqueueDeleteRunnable} will only be called
      * if {@link #commitDelete} is called. Note that one of {@link #commitDelete()} or
@@ -348,14 +374,14 @@
         if (mPreparingToUndo) {
             mDeleteRunnables.add(r);
         } else {
-            ((Executor) MODEL_EXECUTOR).execute(r);
+            MODEL_EXECUTOR.execute(r);
         }
     }
 
     public void commitDelete() {
         mPreparingToUndo = false;
         for (Runnable runnable : mDeleteRunnables) {
-            ((Executor) MODEL_EXECUTOR).execute(runnable);
+            MODEL_EXECUTOR.execute(runnable);
         }
         mDeleteRunnables.clear();
     }
@@ -371,6 +397,20 @@
         mModel.forceReload();
     }
 
+    private void notifyOtherCallbacks(CallbackTask task) {
+        if (mOwner == null) {
+            // If the call is happening from a model, it will take care of updating the callbacks
+            return;
+        }
+        mUiExecutor.execute(() -> {
+            for (Callbacks c : mModel.getCallbacks()) {
+                if (c != mOwner) {
+                    task.execute(c);
+                }
+            }
+        });
+    }
+
     private class UpdateItemRunnable extends UpdateItemBaseRunnable {
         private final ItemInfo mItem;
         private final Supplier<ContentWriter> mWriter;
@@ -491,7 +531,7 @@
 
             int executeId = mBgDataModel.lastBindId;
 
-            mUiHandler.post(() -> {
+            mUiExecutor.post(() -> {
                 int currentId = mBgDataModel.lastBindId;
                 if (currentId > executeId) {
                     // Model was already bound after job was executed.
diff --git a/src/com/android/launcher3/testing/TestProtocol.java b/src/com/android/launcher3/testing/TestProtocol.java
index 2f1f82d..2dc644b 100644
--- a/src/com/android/launcher3/testing/TestProtocol.java
+++ b/src/com/android/launcher3/testing/TestProtocol.java
@@ -110,4 +110,5 @@
     public static final String PERMANENT_DIAG_TAG = "TaplTarget";
     public static final String WORK_PROFILE_REMOVED = "b/159671700";
     public static final String FALLBACK_ACTIVITY_NO_SET = "b/181019015";
+    public static final String HOME_TO_OVERVIEW_FLAKY = "b/193440212";
 }
diff --git a/src/com/android/launcher3/touch/BaseSwipeDetector.java b/src/com/android/launcher3/touch/BaseSwipeDetector.java
index 1276ece..cfd3153 100644
--- a/src/com/android/launcher3/touch/BaseSwipeDetector.java
+++ b/src/com/android/launcher3/touch/BaseSwipeDetector.java
@@ -17,6 +17,8 @@
 
 import static android.view.MotionEvent.INVALID_POINTER_ID;
 
+import static com.android.launcher3.Utilities.IS_RUNNING_IN_TEST_HARNESS;
+
 import android.graphics.PointF;
 import android.util.Log;
 import android.view.MotionEvent;
@@ -41,7 +43,8 @@
  */
 public abstract class BaseSwipeDetector {
 
-    private static final boolean DBG = false;
+    // b/193440212: Debug swipe gesture in tests.
+    private static final boolean DBG = IS_RUNNING_IN_TEST_HARNESS;
     private static final String TAG = "BaseSwipeDetector";
     private static final float ANIMATION_DURATION = 1200;
     /** The minimum release velocity in pixels per millisecond that triggers fling.*/
diff --git a/src/com/android/launcher3/util/ItemInfoMatcher.java b/src/com/android/launcher3/util/ItemInfoMatcher.java
index 354609d..e8ba28f 100644
--- a/src/com/android/launcher3/util/ItemInfoMatcher.java
+++ b/src/com/android/launcher3/util/ItemInfoMatcher.java
@@ -23,6 +23,7 @@
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.shortcuts.ShortcutKey;
 
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
 
@@ -89,4 +90,13 @@
     static ItemInfoMatcher ofItemIds(IntSet ids) {
         return (info, cn) -> ids.contains(info.id);
     }
+
+    /**
+     * Returns a matcher for items with provided items
+     */
+    static ItemInfoMatcher ofItems(Collection<? extends ItemInfo> items) {
+        IntSet ids = new IntSet();
+        items.forEach(item -> ids.add(item.id));
+        return ofItemIds(ids);
+    }
 }
diff --git a/src/com/android/launcher3/util/LauncherBindableItemsContainer.java b/src/com/android/launcher3/util/LauncherBindableItemsContainer.java
new file mode 100644
index 0000000..a4cb30a
--- /dev/null
+++ b/src/com/android/launcher3/util/LauncherBindableItemsContainer.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.util;
+
+import android.graphics.drawable.Drawable;
+import android.view.View;
+
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.folder.Folder;
+import com.android.launcher3.folder.FolderIcon;
+import com.android.launcher3.graphics.PreloadIconDrawable;
+import com.android.launcher3.model.data.FolderInfo;
+import com.android.launcher3.model.data.ItemInfo;
+import com.android.launcher3.model.data.LauncherAppWidgetInfo;
+import com.android.launcher3.model.data.WorkspaceItemInfo;
+import com.android.launcher3.views.ActivityContext;
+import com.android.launcher3.widget.PendingAppWidgetHostView;
+
+import java.util.HashSet;
+import java.util.List;
+
+/**
+ * Interface representing a container which can bind Launcher items with some utility methods
+ */
+public interface LauncherBindableItemsContainer {
+
+    /**
+     * Called to update workspace items as a result of
+     * {@link com.android.launcher3.model.BgDataModel.Callbacks#bindWorkspaceItemsChanged(List)}
+     */
+    default void updateWorkspaceItems(List<WorkspaceItemInfo> shortcuts, ActivityContext context) {
+        final HashSet<WorkspaceItemInfo> updates = new HashSet<>(shortcuts);
+        ItemOperator op = (info, v) -> {
+            if (v instanceof BubbleTextView && updates.contains(info)) {
+                WorkspaceItemInfo si = (WorkspaceItemInfo) info;
+                BubbleTextView shortcut = (BubbleTextView) v;
+                Drawable oldIcon = shortcut.getIcon();
+                boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable)
+                        && ((PreloadIconDrawable) oldIcon).hasNotCompleted();
+                shortcut.applyFromWorkspaceItem(si, si.isPromise() != oldPromiseState);
+            } else if (info instanceof FolderInfo && v instanceof FolderIcon) {
+                ((FolderIcon) v).updatePreviewItems(updates::contains);
+            }
+
+            // Iterate all items
+            return false;
+        };
+
+        mapOverItems(op);
+        Folder openFolder = Folder.getOpen(context);
+        if (openFolder != null) {
+            openFolder.iterateOverItems(op);
+        }
+    }
+
+    /**
+     * Called to update restored items as a result of
+     * {@link com.android.launcher3.model.BgDataModel.Callbacks#bindRestoreItemsChange(HashSet)}}
+     */
+    default void updateRestoreItems(final HashSet<ItemInfo> updates, ActivityContext context) {
+        ItemOperator op = (info, v) -> {
+            if (info instanceof WorkspaceItemInfo && v instanceof BubbleTextView
+                    && updates.contains(info)) {
+                ((BubbleTextView) v).applyLoadingState(false /* promiseStateChanged */);
+            } else if (v instanceof PendingAppWidgetHostView
+                    && info instanceof LauncherAppWidgetInfo
+                    && updates.contains(info)) {
+                ((PendingAppWidgetHostView) v).applyState();
+            } else if (v instanceof FolderIcon && info instanceof FolderInfo) {
+                ((FolderIcon) v).updatePreviewItems(updates::contains);
+            }
+            // process all the shortcuts
+            return false;
+        };
+
+        mapOverItems(op);
+        Folder folder = Folder.getOpen(context);
+        if (folder != null) {
+            folder.iterateOverItems(op);
+        }
+    }
+
+    /**
+     * Map the operator over the shortcuts and widgets.
+     *
+     * @param op the operator to map over the shortcuts
+     */
+    void mapOverItems(ItemOperator op);
+
+    interface ItemOperator {
+        /**
+         * Process the next itemInfo, possibly with side-effect on the next item.
+         *
+         * @param info info for the shortcut
+         * @param view view for the shortcut
+         * @return true if done, false to continue the map
+         */
+        boolean evaluate(ItemInfo info, View view);
+    }
+}
diff --git a/src/com/android/launcher3/widget/BaseWidgetSheet.java b/src/com/android/launcher3/widget/BaseWidgetSheet.java
index adc7ba0..ee44174 100644
--- a/src/com/android/launcher3/widget/BaseWidgetSheet.java
+++ b/src/com/android/launcher3/widget/BaseWidgetSheet.java
@@ -176,7 +176,9 @@
         }
 
         PendingItemDragHelper dragHelper = new PendingItemDragHelper(v);
-        dragHelper.setRemoteViewsPreview(v.getRemoteViewsPreview());
+        // RemoteViews are being rendered in AppWidgetHostView in WidgetCell. And thus, the scale of
+        // RemoteViews is equivalent to the AppWidgetHostView scale.
+        dragHelper.setRemoteViewsPreview(v.getRemoteViewsPreview(), v.getAppWidgetHostViewScale());
         dragHelper.setAppWidgetHostViewPreview(v.getAppWidgetHostViewPreview());
 
         if (image.getDrawable() != null) {
diff --git a/src/com/android/launcher3/widget/PendingItemDragHelper.java b/src/com/android/launcher3/widget/PendingItemDragHelper.java
index cea4de7..a4003d4 100644
--- a/src/com/android/launcher3/widget/PendingItemDragHelper.java
+++ b/src/com/android/launcher3/widget/PendingItemDragHelper.java
@@ -22,6 +22,7 @@
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
+import android.util.Size;
 import android.view.View;
 import android.view.View.MeasureSpec;
 import android.widget.RemoteViews;
@@ -41,6 +42,7 @@
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.icons.RoundDrawableWrapper;
 import com.android.launcher3.widget.dragndrop.AppWidgetHostViewDragListener;
+import com.android.launcher3.widget.util.WidgetSizes;
 
 /**
  * Extension of {@link DragPreviewProvider} with logic specific to pending widgets/shortcuts
@@ -54,6 +56,7 @@
     private int[] mEstimatedCellSize;
 
     @Nullable private RemoteViews mRemoteViewsPreview;
+    private float mRemoteViewsPreviewScale = 1f;
     @Nullable private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
     private final float mEnforcedRoundedCornersForWidget;
 
@@ -68,8 +71,10 @@
      * Sets a {@link RemoteViews} which shows an app widget preview provided by app developers in
      * the pin widget flow.
      */
-    public void setRemoteViewsPreview(@Nullable RemoteViews remoteViewsPreview) {
+    public void setRemoteViewsPreview(@Nullable RemoteViews remoteViewsPreview,
+            float previewScale) {
         mRemoteViewsPreview = remoteViewsPreview;
+        mRemoteViewsPreviewScale = previewScale;
     }
 
     /** Sets a {@link NavigableAppWidgetHostView} which shows a preview layout of an app widget. */
@@ -120,13 +125,14 @@
                 mAppWidgetHostViewPreview.setPadding(padding.left, padding.top, padding.right,
                         padding.bottom);
                 mAppWidgetHostViewPreview.updateAppWidget(/* remoteViews= */ mRemoteViewsPreview);
-                int width =
-                        deviceProfile.cellWidthPx * mAddInfo.spanX + padding.left + padding.right;
-                int height =
-                        deviceProfile.cellHeightPx * mAddInfo.spanY + padding.top + padding.bottom;
+                Size widgetSizes = WidgetSizes.getWidgetPaddedSizePx(launcher,
+                        mAddInfo.componentName, deviceProfile, mAddInfo.spanX, mAddInfo.spanY);
                 mAppWidgetHostViewPreview.measure(
-                        MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY),
-                        MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));
+                        MeasureSpec.makeMeasureSpec(widgetSizes.getWidth(), MeasureSpec.EXACTLY),
+                        MeasureSpec.makeMeasureSpec(widgetSizes.getHeight(), MeasureSpec.EXACTLY));
+                mAppWidgetHostViewPreview.setClipChildren(false);
+                mAppWidgetHostViewPreview.setClipToPadding(false);
+                mAppWidgetHostViewPreview.setScaleToFit(mRemoteViewsPreviewScale);
             }
             if (mAppWidgetHostViewPreview != null) {
                 previewSizeBeforeScale[0] = mAppWidgetHostViewPreview.getMeasuredWidth();
diff --git a/src/com/android/launcher3/widget/WidgetCell.java b/src/com/android/launcher3/widget/WidgetCell.java
index 5759f75..0c9a15a 100644
--- a/src/com/android/launcher3/widget/WidgetCell.java
+++ b/src/com/android/launcher3/widget/WidgetCell.java
@@ -16,12 +16,14 @@
 
 package com.android.launcher3.widget;
 
+import static android.view.View.MeasureSpec.makeMeasureSpec;
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
 import static com.android.launcher3.Utilities.ATLEAST_S;
 
 import android.content.Context;
 import android.graphics.Bitmap;
-import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.os.CancellationSignal;
 import android.util.AttributeSet;
@@ -31,6 +33,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnLayoutChangeListener;
+import android.view.ViewGroup;
 import android.view.ViewPropertyAnimator;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
@@ -43,6 +46,7 @@
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.CheckLongPressHelper;
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.icons.RoundDrawableWrapper;
@@ -71,11 +75,36 @@
     /** Widget preview width is calculated by multiplying this factor to the widget cell width. */
     private static final float PREVIEW_SCALE = 0.8f;
 
-    protected int mPreviewWidth;
-    protected int mPreviewHeight;
+    /**
+     * The maximum dimension that can be used as the size in
+     * {@link android.view.View.MeasureSpec#makeMeasureSpec(int, int)}.
+     *
+     * <p>This is equal to (1 << MeasureSpec.MODE_SHIFT) - 1.
+     */
+    private static final int MAX_MEASURE_SPEC_DIMENSION = (1 << 30) - 1;
+
+    /**
+     * The target preview width, in pixels, of a widget or a shortcut.
+     *
+     * <p>The actual preview width may be smaller than or equal to this value subjected to scaling.
+     */
+    protected int mTargetPreviewWidth;
+
+    /**
+     * The target preview height, in pixels, of a widget or a shortcut.
+     *
+     * <p>The actual preview height may be smaller than or equal to this value subjected to scaling.
+     */
+    protected int mTargetPreviewHeight;
+
     protected int mPresetPreviewSize;
+
     private int mCellSize;
-    private float mPreviewScale = 1f;
+
+    /**
+     * The scale of the preview container.
+     */
+    private float mPreviewContainerScale = 1f;
 
     private FrameLayout mWidgetImageContainer;
     private WidgetImageView mWidgetImage;
@@ -96,10 +125,10 @@
     protected final BaseActivity mActivity;
     private final CheckLongPressHelper mLongPressHelper;
     private final float mEnforcedCornerRadius;
-    private final int mShortcutPreviewPadding;
 
     private RemoteViews mRemoteViewsPreview;
     private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
+    private float mAppWidgetHostViewScale = 1f;
     private int mSourceContainer = CONTAINER_WIDGETS_TRAY;
 
     public WidgetCell(Context context) {
@@ -122,14 +151,12 @@
         setClipToPadding(false);
         setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
         mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
-        mShortcutPreviewPadding =
-                2 * getResources().getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
     }
 
     private void setContainerWidth() {
         mCellSize = (int) (mActivity.getDeviceProfile().allAppsIconSizePx * WIDTH_SCALE);
         mPresetPreviewSize = (int) (mCellSize * PREVIEW_SCALE);
-        mPreviewWidth = mPreviewHeight = mPresetPreviewSize;
+        mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;
     }
 
     @Override
@@ -152,6 +179,11 @@
         return mRemoteViewsPreview;
     }
 
+    /** Returns the app widget host view scale, which is a value between [0f, 1f]. */
+    public float getAppWidgetHostViewScale() {
+        return mAppWidgetHostViewScale;
+    }
+
     /**
      * Called to clear the view and free attached resources. (e.g., {@link Bitmap}
      */
@@ -166,7 +198,7 @@
         mWidgetDims.setText(null);
         mWidgetDescription.setText(null);
         mWidgetDescription.setVisibility(GONE);
-        mPreviewWidth = mPreviewHeight = mPresetPreviewSize;
+        mTargetPreviewWidth = mTargetPreviewHeight = mPresetPreviewSize;
 
         if (mActiveRequest != null) {
             mActiveRequest.cancel();
@@ -177,6 +209,7 @@
             mWidgetImageContainer.removeView(mAppWidgetHostViewPreview);
         }
         mAppWidgetHostViewPreview = null;
+        mAppWidgetHostViewScale = 1f;
         mItem = null;
     }
 
@@ -217,12 +250,7 @@
 
     private void applyPreviewOnAppWidgetHostView(WidgetItem item) {
         if (mRemoteViewsPreview != null) {
-            mAppWidgetHostViewPreview = new NavigableAppWidgetHostView(getContext()) {
-                @Override
-                protected boolean shouldAllowDirectClick() {
-                    return false;
-                }
-            };
+            mAppWidgetHostViewPreview = createAppWidgetHostView(getContext());
             setAppWidgetHostViewPreview(mAppWidgetHostViewPreview, item.widgetInfo,
                     mRemoteViewsPreview);
             return;
@@ -230,10 +258,15 @@
 
         if (!item.hasPreviewLayout()) return;
 
-        mAppWidgetHostViewPreview = new LauncherAppWidgetHostView(getContext());
+        Context context = getContext();
+        // If the context is a Launcher activity, DragView will show mAppWidgetHostViewPreview as
+        // a preview during drag & drop. And thus, we should use LauncherAppWidgetHostView, which
+        // supports applying local color extraction during drag & drop.
+        mAppWidgetHostViewPreview = isLauncherContext(context)
+                ? new LauncherAppWidgetHostView(context)
+                : createAppWidgetHostView(context);
         LauncherAppWidgetProviderInfo launcherAppWidgetProviderInfo =
-                LauncherAppWidgetProviderInfo.fromProviderInfo(getContext(),
-                        item.widgetInfo.clone());
+                LauncherAppWidgetProviderInfo.fromProviderInfo(context, item.widgetInfo.clone());
         // A hack to force the initial layout to be the preview layout since there is no API for
         // rendering a preview layout for work profile apps yet. For non-work profile layout, a
         // proper solution is to use RemoteViews(PackageName, LayoutId).
@@ -248,16 +281,6 @@
             @Nullable RemoteViews remoteViews) {
         appWidgetHostViewPreview.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
         appWidgetHostViewPreview.setAppWidget(/* appWidgetId= */ -1, providerInfo);
-        Rect padding;
-        DeviceProfile deviceProfile = mActivity.getDeviceProfile();
-        if (deviceProfile.shouldInsetWidgets()) {
-            padding = new Rect();
-            appWidgetHostViewPreview.getWidgetInset(deviceProfile, padding);
-        } else {
-            padding = deviceProfile.inv.defaultWidgetPadding;
-        }
-        appWidgetHostViewPreview.setPadding(padding.left, padding.top, padding.right,
-                padding.bottom);
         appWidgetHostViewPreview.updateAppWidget(remoteViews);
     }
 
@@ -305,7 +328,7 @@
             if (getWidth() > 0 && getHeight() > 0) {
                 // Scale down the preview size if it's wider than the cell.
                 float maxWidth = getWidth();
-                float previewWidth = drawable.getIntrinsicWidth() * mPreviewScale;
+                float previewWidth = drawable.getIntrinsicWidth() * mPreviewContainerScale;
                 scale = Math.min(maxWidth / previewWidth, 1);
             }
             setContainerSize(
@@ -329,16 +352,32 @@
 
     private void setContainerSize(int width, int height) {
         LayoutParams layoutParams = (LayoutParams) mWidgetImageContainer.getLayoutParams();
-        layoutParams.width = (int) (width * mPreviewScale);
-        layoutParams.height = (int) (height * mPreviewScale);
+        layoutParams.width = width;
+        layoutParams.height = height;
         mWidgetImageContainer.setLayoutParams(layoutParams);
     }
 
     public void ensurePreview() {
         if (mAppWidgetHostViewPreview != null) {
-            setContainerSize(mPreviewWidth, mPreviewHeight);
+            int containerWidth = (int) (mTargetPreviewWidth * mPreviewContainerScale);
+            int containerHeight = (int) (mTargetPreviewHeight * mPreviewContainerScale);
+            setContainerSize(containerWidth, containerHeight);
+            if (mAppWidgetHostViewPreview.getChildCount() == 1) {
+                View widgetContent = mAppWidgetHostViewPreview.getChildAt(0);
+                ViewGroup.LayoutParams layoutParams = widgetContent.getLayoutParams();
+                // We only scale preview if both the width & height of the outermost view group are
+                // not set to MATCH_PARENT.
+                boolean shouldScale =
+                        layoutParams.width != MATCH_PARENT && layoutParams.height != MATCH_PARENT;
+                if (shouldScale) {
+                    setNoClip(mWidgetImageContainer);
+                    setNoClip(mAppWidgetHostViewPreview);
+                    mAppWidgetHostViewScale = computeWidgetPreviewScale();
+                    mAppWidgetHostViewPreview.setScaleToFit(mAppWidgetHostViewScale);
+                }
+            }
             FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
-                    mPreviewWidth, mPreviewHeight, Gravity.FILL);
+                    containerWidth, containerHeight, Gravity.FILL);
             mAppWidgetHostViewPreview.setLayoutParams(params);
             mWidgetImageContainer.addView(mAppWidgetHostViewPreview, /* index= */ 0);
             mWidgetImage.setVisibility(View.GONE);
@@ -350,7 +389,7 @@
         }
         mActiveRequest = mWidgetPreviewLoader.loadPreview(
                 BaseActivity.fromContext(getContext()), mItem,
-                new Size(mPreviewWidth, mPreviewHeight),
+                new Size(mTargetPreviewWidth, mTargetPreviewHeight),
                 this::applyPreview);
     }
 
@@ -363,9 +402,9 @@
     public Size setPreviewSize(WidgetItem widgetItem, float previewScale) {
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
         Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, widgetItem);
-        mPreviewWidth = widgetSize.getWidth();
-        mPreviewHeight = widgetSize.getHeight();
-        mPreviewScale = previewScale;
+        mTargetPreviewWidth = widgetSize.getWidth();
+        mTargetPreviewHeight = widgetSize.getHeight();
+        mPreviewContainerScale = previewScale;
         return widgetSize;
     }
 
@@ -400,6 +439,24 @@
         return "";
     }
 
+    private static NavigableAppWidgetHostView createAppWidgetHostView(Context context) {
+        return new NavigableAppWidgetHostView(context) {
+            @Override
+            protected boolean shouldAllowDirectClick() {
+                return false;
+            }
+        };
+    }
+
+    private static boolean isLauncherContext(Context context) {
+        try {
+            Launcher.getLauncher(context);
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
     @Override
     public CharSequence getAccessibilityClassName() {
         return WidgetCell.class.getName();
@@ -410,4 +467,35 @@
         super.onInitializeAccessibilityNodeInfo(info);
         info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLICK);
     }
+
+    private static void setNoClip(ViewGroup view) {
+        view.setClipChildren(false);
+        view.setClipToPadding(false);
+    }
+
+    private float computeWidgetPreviewScale() {
+        if (mAppWidgetHostViewPreview.getChildCount() != 1) {
+            return 1f;
+        }
+
+        // Measure the largest possible width & height that the app widget wants to display.
+        mAppWidgetHostViewPreview.measure(
+                makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED),
+                makeMeasureSpec(MAX_MEASURE_SPEC_DIMENSION, MeasureSpec.UNSPECIFIED));
+        int appWidgetContentWidth = mAppWidgetHostViewPreview.getChildAt(0).getMeasuredWidth();
+        int appWidgetContentHeight = mAppWidgetHostViewPreview.getChildAt(0).getMeasuredHeight();
+        if (appWidgetContentWidth == 0 || appWidgetContentHeight == 0) {
+            return 1f;
+        }
+
+        int horizontalPadding = mAppWidgetHostViewPreview.getPaddingStart()
+                + mAppWidgetHostViewPreview.getPaddingEnd();
+        int verticalPadding = mAppWidgetHostViewPreview.getPaddingTop()
+                + mAppWidgetHostViewPreview.getPaddingBottom();
+        return Math.min(
+                (mTargetPreviewWidth - horizontalPadding) * mPreviewContainerScale
+                        / appWidgetContentWidth,
+                (mTargetPreviewHeight - verticalPadding) * mPreviewContainerScale
+                        / appWidgetContentHeight);
+    }
 }
diff --git a/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java b/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java
index 33066e4..032a7b4 100644
--- a/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java
+++ b/tests/src/com/android/launcher3/compat/PromiseIconUiTest.java
@@ -25,8 +25,8 @@
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
-import com.android.launcher3.Workspace;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 
 import org.junit.After;
 import org.junit.Test;
@@ -75,7 +75,7 @@
     @Test
     public void testPromiseIcon_addedFromEligibleSession() throws Throwable {
         final String appLabel = "Test Promise App " + UUID.randomUUID().toString();
-        final Workspace.ItemOperator findPromiseApp = (info, view) ->
+        final ItemOperator findPromiseApp = (info, view) ->
                 info != null && TextUtils.equals(info.title, appLabel);
 
         // Create and add test session
@@ -97,7 +97,7 @@
     @Test
     public void testPromiseIcon_notAddedFromIneligibleSession() throws Throwable {
         final String appLabel = "Test Promise App " + UUID.randomUUID().toString();
-        final Workspace.ItemOperator findPromiseApp = (info, view) ->
+        final ItemOperator findPromiseApp = (info, view) ->
                 info != null && TextUtils.equals(info.title, appLabel);
 
         // Create and add test session without icon or label
diff --git a/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java
index 4978c01..5ea5d65 100644
--- a/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/AddConfigWidgetTest.java
@@ -28,13 +28,13 @@
 import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
 
-import com.android.launcher3.Workspace;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.tapl.Widgets;
 import com.android.launcher3.testcomponent.WidgetConfigActivity;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
 import com.android.launcher3.ui.TestViewHelpers;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Wait;
 import com.android.launcher3.util.Wait.Condition;
 import com.android.launcher3.util.rule.ShellCommandRule;
@@ -121,7 +121,7 @@
     /**
      * Condition for searching widget id
      */
-    private class WidgetSearchCondition implements Condition, Workspace.ItemOperator {
+    private class WidgetSearchCondition implements Condition, ItemOperator {
 
         @Override
         public boolean isTrue() throws Throwable {
diff --git a/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java b/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java
index 745dc22..641e53a 100644
--- a/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/RequestPinItemTest.java
@@ -30,7 +30,6 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.Workspace.ItemOperator;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
@@ -40,6 +39,7 @@
 import com.android.launcher3.testcomponent.AppWidgetWithConfig;
 import com.android.launcher3.testcomponent.RequestPinItemActivity;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 import com.android.launcher3.util.Wait;
 import com.android.launcher3.util.Wait.Condition;
 import com.android.launcher3.util.rule.ScreenRecordRule.ScreenRecord;
diff --git a/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java b/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java
index 6a6ec3e..2093682 100644
--- a/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java
+++ b/tests/src/com/android/launcher3/util/rule/LauncherActivityRule.java
@@ -18,7 +18,7 @@
 import android.app.Activity;
 
 import com.android.launcher3.Launcher;
-import com.android.launcher3.Workspace.ItemOperator;
+import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
 
 import org.junit.runner.Description;
 import org.junit.runners.model.Statement;