diff --git a/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java b/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java
index 72b8d3f..dacd8a2 100644
--- a/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java
+++ b/ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java
@@ -80,7 +80,7 @@
     }
 
     @Override
-    public Bundle call(String method) {
+    public Bundle call(String method, String arg) {
         final Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_APP_LIST_FREEZE_FLAGS: {
@@ -161,7 +161,7 @@
             }
 
             default:
-                return super.call(method);
+                return super.call(method, arg);
         }
     }
 }
diff --git a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
index fd44e02..e2f198c 100644
--- a/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
+++ b/quickstep/src/com/android/quickstep/FallbackSwipeHandler.java
@@ -173,7 +173,9 @@
     @Override
     protected void notifyGestureAnimationStartToRecents() {
         if (mRunningOverHome) {
-            mRecentsView.onGestureAnimationStartOnHome(mGestureState.getRunningTask());
+            if (SysUINavigationMode.getMode(mContext).hasGestures) {
+                mRecentsView.onGestureAnimationStartOnHome(mGestureState.getRunningTask());
+            }
         } else {
             super.notifyGestureAnimationStartToRecents();
         }
diff --git a/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java b/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
index 39af0db..d531339 100644
--- a/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
+++ b/quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java
@@ -21,7 +21,7 @@
     }
 
     @Override
-    public Bundle call(String method) {
+    public Bundle call(String method, String arg) {
         final Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_ALL_APPS_TO_OVERVIEW_SWIPE_HEIGHT: {
@@ -66,7 +66,7 @@
             }
         }
 
-        return super.call(method);
+        return super.call(method, arg);
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index 61622ee..8155244 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -144,7 +144,7 @@
     private static final int SYSTEM_ACTION_ID_ALL_APPS = 14;
 
     public static final boolean ENABLE_PER_WINDOW_INPUT_ROTATION =
-            SystemProperties.getBoolean("persist.debug.per_window_input_rotation", false);
+            SystemProperties.getBoolean("persist.debug.per_window_input_rotation", true);
 
     private int mBackGestureNotificationCounter = -1;
     @Nullable
diff --git a/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java b/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
index 6bdc284..7ae0fc8 100644
--- a/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
+++ b/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
@@ -16,19 +16,15 @@
 
 package com.android.quickstep.logging;
 
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_WORKSPACE_SIZE;
 import static com.android.launcher3.Utilities.getDevicePrefs;
 import static com.android.launcher3.Utilities.getPrefs;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_2;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_3;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_4;
-import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_5;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_HOME_SCREEN_SUGGESTIONS_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_HOME_SCREEN_SUGGESTIONS_ENABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_NOTIFICATION_DOT_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_NOTIFICATION_DOT_ENABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_THEMED_ICON_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_THEMED_ICON_ENABLED;
+import static com.android.launcher3.model.DeviceGridState.KEY_WORKSPACE_SIZE;
 import static com.android.launcher3.model.QuickstepModelDelegate.LAST_PREDICTION_ENABLED_STATE;
 import static com.android.launcher3.util.SettingsCache.NOTIFICATION_BADGING_URI;
 import static com.android.launcher3.util.Themes.KEY_THEMED_ICONS;
@@ -43,11 +39,11 @@
 
 import com.android.launcher3.AutoInstallsLayout;
 import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.InstanceIdSequence;
 import com.android.launcher3.logging.StatsLogManager;
 import com.android.launcher3.logging.StatsLogManager.StatsLogger;
+import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.util.SettingsCache;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SysUINavigationMode.Mode;
@@ -135,7 +131,8 @@
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
         if (LAST_PREDICTION_ENABLED_STATE.equals(key)
-                || KEY_MIGRATION_SRC_WORKSPACE_SIZE.equals(key)
+                || KEY_WORKSPACE_SIZE.equals(key)
+                || KEY_THEMED_ICONS.equals(key)
                 || mLoggablePrefs.containsKey(key)) {
             dispatchUserEvent();
         }
@@ -153,32 +150,13 @@
                 ? LAUNCHER_HOME_SCREEN_SUGGESTIONS_ENABLED
                 : LAUNCHER_HOME_SCREEN_SUGGESTIONS_DISABLED);
 
-        SharedPreferences prefs = getPrefs(mContext);
-        StatsLogManager.LauncherEvent gridSizeChangedEvent = null;
-        String workspaceSize = prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, null);
-        if (workspaceSize != null) {
-            switch (Utilities.parsePoint(workspaceSize).x) {
-                case 5:
-                    gridSizeChangedEvent = LAUNCHER_GRID_SIZE_5;
-                    break;
-                case 4:
-                    gridSizeChangedEvent = LAUNCHER_GRID_SIZE_4;
-                    break;
-                case 3:
-                    gridSizeChangedEvent = LAUNCHER_GRID_SIZE_3;
-                    break;
-                case 2:
-                    gridSizeChangedEvent = LAUNCHER_GRID_SIZE_2;
-                    break;
-                default:
-                    // Ignore illegal input.
-                    break;
-            }
-        }
+        StatsLogManager.LauncherEvent gridSizeChangedEvent =
+                new DeviceGridState(mContext).getWorkspaceSizeEvent();
         if (gridSizeChangedEvent != null) {
             logger.log(gridSizeChangedEvent);
         }
 
+        SharedPreferences prefs = getPrefs(mContext);
         if (FeatureFlags.ENABLE_THEMED_ICONS.get()) {
             logger.log(prefs.getBoolean(KEY_THEMED_ICONS, false)
                     ? LAUNCHER_THEMED_ICON_ENABLED
diff --git a/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java b/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
index 1ed2da3..ac2534e 100644
--- a/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
+++ b/quickstep/src/com/android/quickstep/util/MotionPauseDetector.java
@@ -23,6 +23,7 @@
 import com.android.launcher3.Alarm;
 import com.android.launcher3.R;
 import com.android.launcher3.compat.AccessibilityManagerCompat;
+import com.android.launcher3.testing.TestProtocol;
 
 /**
  * Given positions along x- or y-axis, tracks velocity and acceleration and determines when there is
@@ -118,9 +119,9 @@
      * @param pointerIndex Index for the pointer being tracked in the motion event
      */
     public void addPosition(MotionEvent ev, int pointerIndex) {
-        mForcePauseTimeout.setAlarm(mMakePauseHarderToTrigger
-                ? HARDER_TRIGGER_TIMEOUT
-                : FORCE_PAUSE_TIMEOUT);
+        mForcePauseTimeout.setAlarm(TestProtocol.sForcePauseTimeout != null
+                ? TestProtocol.sForcePauseTimeout
+                : mMakePauseHarderToTrigger ? HARDER_TRIGGER_TIMEOUT : FORCE_PAUSE_TIMEOUT);
         float newVelocity = mVelocityProvider.addMotionEvent(ev, ev.getPointerId(pointerIndex));
         if (mPreviousVelocity != null) {
             checkMotionPaused(newVelocity, mPreviousVelocity, ev.getEventTime());
diff --git a/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java b/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java
index 34a8025..a397db5 100644
--- a/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java
+++ b/robolectric_tests/src/com/android/launcher3/model/BackupRestoreTest.java
@@ -76,7 +76,7 @@
         setupUserManager();
         setupBackupManager();
         mModelHelper = new LauncherModelHelper();
-        RestoreDbTask.setPending(RuntimeEnvironment.application, true);
+        RestoreDbTask.setPending(RuntimeEnvironment.application);
         mDb = mModelHelper.provider.getDb();
         mIdp = InvariantDeviceProfile.INSTANCE.get(RuntimeEnvironment.application);
     }
diff --git a/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java b/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java
index d2051e0..87b0887 100644
--- a/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java
+++ b/robolectric_tests/src/com/android/launcher3/model/GridSizeMigrationTaskV2Test.java
@@ -124,11 +124,9 @@
         mIdp.numColumns = 4;
         mIdp.numRows = 4;
         GridSizeMigrationTaskV2.DbReader srcReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages,
-                srcHotseatItems.length);
+                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages);
         GridSizeMigrationTaskV2.DbReader destReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages,
-                mIdp.numDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages);
         GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(mContext, mDb, srcReader,
                 destReader, mIdp.numDatabaseHotseatIcons, new Point(mIdp.numColumns, mIdp.numRows));
         task.migrate(mIdp);
@@ -204,11 +202,9 @@
         mIdp.numColumns = 4;
         mIdp.numRows = 4;
         GridSizeMigrationTaskV2.DbReader srcReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages,
-                numSrcDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages);
         GridSizeMigrationTaskV2.DbReader destReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages,
-                mIdp.numDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages);
         GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(mContext, mDb, srcReader,
                 destReader, mIdp.numDatabaseHotseatIcons, new Point(mIdp.numColumns, mIdp.numRows));
         task.migrate(mIdp);
@@ -247,16 +243,13 @@
                 mModelHelper.addItem(APP_ICON, 5, HOTSEAT, 0, 0, testPackage5, 5, TMP_CONTENT_URI),
         };
 
-        int numSrcDatabaseHotseatIcons = srcHotseatItems.length;
         mIdp.numDatabaseHotseatIcons = 4;
         mIdp.numColumns = 4;
         mIdp.numRows = 4;
         GridSizeMigrationTaskV2.DbReader srcReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages,
-                numSrcDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TMP_TABLE, mContext, mValidPackages);
         GridSizeMigrationTaskV2.DbReader destReader = new GridSizeMigrationTaskV2.DbReader(mDb,
-                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages,
-                mIdp.numDatabaseHotseatIcons);
+                LauncherSettings.Favorites.TABLE_NAME, mContext, mValidPackages);
         GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(mContext, mDb, srcReader,
                 destReader, mIdp.numDatabaseHotseatIcons, new Point(mIdp.numColumns, mIdp.numRows));
         task.migrate(mIdp);
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index f800cf6..02fe7d9 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -321,7 +321,8 @@
 
     @UiThread
     protected void applyIconAndLabel(ItemInfoWithIcon info) {
-        boolean useTheme = mDisplay == DISPLAY_WORKSPACE || mDisplay == DISPLAY_FOLDER;
+        boolean useTheme = mDisplay == DISPLAY_WORKSPACE || mDisplay == DISPLAY_FOLDER
+                || mDisplay == DISPLAY_TASKBAR;
         FastBitmapDrawable iconDrawable = info.newIcon(getContext(), useTheme);
         mDotParams.color = IconPalette.getMutedColor(iconDrawable.getIconColor(), 0.54f);
 
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index a2bd201..10b3f98 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -17,7 +17,6 @@
 package com.android.launcher3;
 
 import static com.android.launcher3.Utilities.dpiFromPx;
-import static com.android.launcher3.Utilities.getPointString;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_TWO_PANEL_HOME;
 import static com.android.launcher3.util.DisplayController.CHANGE_DENSITY;
 import static com.android.launcher3.util.DisplayController.CHANGE_SUPPORTED_BOUNDS;
@@ -44,6 +43,7 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
+import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.IntArray;
@@ -66,9 +66,6 @@
     public static final MainThreadInitializedObject<InvariantDeviceProfile> INSTANCE =
             new MainThreadInitializedObject<>(InvariantDeviceProfile::new);
 
-    public static final String KEY_MIGRATION_SRC_WORKSPACE_SIZE = "migration_src_workspace_size";
-    public static final String KEY_MIGRATION_SRC_HOTSEAT_COUNT = "migration_src_hotseat_count";
-
     private static final int DEFAULT_TRUE = -1;
     private static final int DEFAULT_SPLIT_DISPLAY = 2;
 
@@ -188,10 +185,7 @@
         if (!newGridName.equals(gridName)) {
             Utilities.getPrefs(context).edit().putString(KEY_IDP_GRID_NAME, newGridName).apply();
         }
-        Utilities.getPrefs(context).edit()
-                .putInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, numDatabaseHotseatIcons)
-                .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, getPointString(numColumns, numRows))
-                .apply();
+        new DeviceGridState(this).writeToPrefs(context);
 
         DisplayController.INSTANCE.get(context).addChangeListener(
                 (displayContext, info, flags) -> {
diff --git a/src/com/android/launcher3/LauncherBackupAgent.java b/src/com/android/launcher3/LauncherBackupAgent.java
index 140794b..dc533f0 100644
--- a/src/com/android/launcher3/LauncherBackupAgent.java
+++ b/src/com/android/launcher3/LauncherBackupAgent.java
@@ -31,6 +31,6 @@
 
     @Override
     public void onRestoreFinished() {
-        RestoreDbTask.setPending(this, true);
+        RestoreDbTask.setPending(this);
     }
 }
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 95a8d81..49f20c6 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -151,15 +151,7 @@
             mOpenHelper = DatabaseHelper.createDatabaseHelper(
                     getContext(), false /* forMigration */);
 
-            if (RestoreDbTask.isPending(getContext())) {
-                if (!RestoreDbTask.performRestore(getContext(), mOpenHelper,
-                        new BackupManager(getContext()))) {
-                    mOpenHelper.createEmptyDB(mOpenHelper.getWritableDatabase());
-                }
-                // Set is pending to false irrespective of the result, so that it doesn't get
-                // executed again.
-                RestoreDbTask.setPending(getContext(), false);
-            }
+            RestoreDbTask.restoreIfNeeded(getContext(), mOpenHelper);
         }
     }
 
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 7d818d2..b92cf09 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -648,21 +648,6 @@
         handler.sendMessage(msg);
     }
 
-    /**
-     * Parses a string encoded using {@link #getPointString(int, int)}
-     */
-    public static Point parsePoint(String point) {
-        String[] split = point.split(",");
-        return new Point(Integer.parseInt(split[0]), Integer.parseInt(split[1]));
-    }
-
-    /**
-     * Encodes a point to string to that it can be persisted atomically.
-     */
-    public static String getPointString(int x, int y) {
-        return String.format(Locale.ENGLISH, "%d,%d", x, y);
-    }
-
     public static void unregisterReceiverSafely(Context context, BroadcastReceiver receiver) {
         try {
             context.unregisterReceiver(receiver);
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 9735bee..83ca08d 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -1777,7 +1777,7 @@
 
         boolean droppedOnOriginalCell = false;
 
-        int snapScreen = -1;
+        boolean snappedToNewPage = false;
         boolean resizeOnDrop = false;
         Runnable onCompleteRunnable = null;
         if (d.dragSource != this || mDragInfo == null) {
@@ -1859,11 +1859,14 @@
                 }
 
                 if (foundCell) {
-                    if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) {
-                        snapScreen = getPageIndexForScreenId(screenId);
+                    int targetScreenIndex = getPageIndexForScreenId(screenId);
+                    int snapScreen = getLeftmostVisiblePageForIndex(targetScreenIndex);
+                    // On large screen devices two pages can be shown at the same time, and snap
+                    // isn't needed if the source and target screens appear at the same time
+                    if (snapScreen != mCurrentPage && !hasMovedIntoHotseat) {
                         snapToPage(snapScreen);
+                        snappedToNewPage = true;
                     }
-
                     final ItemInfo info = (ItemInfo) cell.getTag();
                     if (hasMovedLayouts) {
                         // Reparent the view
@@ -1955,7 +1958,7 @@
                             ANIMATE_INTO_POSITION_AND_DISAPPEAR;
                     animateWidgetDrop(info, parent, d.dragView, null, animationType, cell, false);
                 } else {
-                    int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION;
+                    int duration = snappedToNewPage ? ADJACENT_SCREEN_DROP_DURATION : -1;
                     mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration,
                             this);
                 }
diff --git a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
index 9faac5b..0fb5e77 100644
--- a/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
+++ b/src/com/android/launcher3/accessibility/LauncherAccessibilityDelegate.java
@@ -188,7 +188,8 @@
     private boolean itemSupportsAccessibleDrag(ItemInfo item) {
         if (item instanceof WorkspaceItemInfo) {
             // Support the action unless the item is in a context menu.
-            return item.screenId >= 0 && item.container != Favorites.CONTAINER_HOTSEAT_PREDICTION;
+            return (item.screenId >= 0 || item.screenId == Workspace.LEFT_PANEL_ID)
+                    && item.container != Favorites.CONTAINER_HOTSEAT_PREDICTION;
         }
         return (item instanceof LauncherAppWidgetInfo)
                 || (item instanceof FolderInfo);
diff --git a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
index 94778a2..bb726f8 100644
--- a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
+++ b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
@@ -286,8 +286,8 @@
             WallpaperColors wallpaperColors = wallpaperColorsOverride != null
                     ? wallpaperColorsOverride
                     : WallpaperManager.getInstance(context).getWallpaperColors(FLAG_SYSTEM);
-            mWallpaperColorResources = LocalColorExtractor.newInstance(context)
-                    .generateColorsOverride(wallpaperColors);
+            mWallpaperColorResources = wallpaperColors != null ? LocalColorExtractor.newInstance(
+                    context).generateColorsOverride(wallpaperColors) : null;
         } else {
             mWallpaperColorResources = null;
         }
diff --git a/src/com/android/launcher3/model/DeviceGridState.java b/src/com/android/launcher3/model/DeviceGridState.java
new file mode 100644
index 0000000..761053d
--- /dev/null
+++ b/src/com/android/launcher3/model/DeviceGridState.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.model;
+
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_2;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_3;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_4;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_5;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.text.TextUtils;
+
+import com.android.launcher3.InvariantDeviceProfile;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.logging.StatsLogManager.LauncherEvent;
+
+import java.util.Locale;
+import java.util.Objects;
+
+/**
+ * Utility class representing persisted grid properties.
+ */
+public class DeviceGridState {
+
+    public static final String KEY_WORKSPACE_SIZE = "migration_src_workspace_size";
+    public static final String KEY_HOTSEAT_COUNT = "migration_src_hotseat_count";
+    public static final String KEY_DEVICE_TYPE = "migration_src_device_type";
+
+    public static final int TYPE_PHONE = 0;
+    public static final int TYPE_MULTI_DISPLAY = 1;
+    public static final int TYPE_TABLET = 2;
+
+    private final String mGridSizeString;
+    private final int mNumHotseat;
+    private final int mDeviceType;
+
+    public DeviceGridState(InvariantDeviceProfile idp) {
+        mGridSizeString = String.format(Locale.ENGLISH, "%d,%d", idp.numColumns, idp.numRows);
+        mNumHotseat = idp.numDatabaseHotseatIcons;
+        mDeviceType = idp.supportedProfiles.size() > 2
+                ? TYPE_MULTI_DISPLAY
+                : idp.supportedProfiles.stream().allMatch(dp -> dp.isTablet)
+                        ? TYPE_TABLET
+                        : TYPE_PHONE;
+    }
+
+    public DeviceGridState(Context context) {
+        SharedPreferences prefs = Utilities.getPrefs(context);
+        mGridSizeString = prefs.getString(KEY_WORKSPACE_SIZE, "");
+        mNumHotseat = prefs.getInt(KEY_HOTSEAT_COUNT, -1);
+        mDeviceType = prefs.getInt(KEY_DEVICE_TYPE, TYPE_PHONE);
+    }
+
+    /**
+     * Returns the device type for the grid
+     */
+    public int getDeviceType() {
+        return mDeviceType;
+    }
+
+    /**
+     * Stores the device state to shared preferences
+     */
+    public void writeToPrefs(Context context) {
+        Utilities.getPrefs(context).edit()
+                .putString(KEY_WORKSPACE_SIZE, mGridSizeString)
+                .putInt(KEY_HOTSEAT_COUNT, mNumHotseat)
+                .putInt(KEY_DEVICE_TYPE, mDeviceType)
+                .apply();
+    }
+
+    /**
+     * Returns the logging event corresponding to the grid state
+     */
+    public LauncherEvent getWorkspaceSizeEvent() {
+        if (!TextUtils.isEmpty(mGridSizeString)) {
+            switch (mGridSizeString.charAt(0)) {
+                case '5':
+                    return LAUNCHER_GRID_SIZE_5;
+                case '4':
+                    return LAUNCHER_GRID_SIZE_4;
+                case '3':
+                    return LAUNCHER_GRID_SIZE_3;
+                case '2':
+                    return LAUNCHER_GRID_SIZE_2;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        DeviceGridState that = (DeviceGridState) o;
+        return mNumHotseat == that.mNumHotseat
+                && mDeviceType == that.mDeviceType
+                && Objects.equals(mGridSizeString, that.mGridSizeString);
+    }
+}
diff --git a/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java b/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java
index 3935bcf..e64b25c 100644
--- a/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java
+++ b/src/com/android/launcher3/model/GridSizeMigrationTaskV2.java
@@ -16,9 +16,6 @@
 
 package com.android.launcher3.model;
 
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_HOTSEAT_COUNT;
-import static com.android.launcher3.InvariantDeviceProfile.KEY_MIGRATION_SRC_WORKSPACE_SIZE;
-import static com.android.launcher3.Utilities.getPointString;
 import static com.android.launcher3.provider.LauncherDbUtils.dropTable;
 
 import android.content.ComponentName;
@@ -107,11 +104,7 @@
      * Check given a new IDP, if migration is necessary.
      */
     public static boolean needsToMigrate(Context context, InvariantDeviceProfile idp) {
-        SharedPreferences prefs = Utilities.getPrefs(context);
-        String gridSizeString = getPointString(idp.numColumns, idp.numRows);
-
-        return !gridSizeString.equals(prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, ""))
-                || idp.numDatabaseHotseatIcons != prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, -1);
+        return !new DeviceGridState(idp).equals(new DeviceGridState(context));
     }
 
     /** See {@link #migrateGridIfNeeded(Context, InvariantDeviceProfile)} */
@@ -124,15 +117,15 @@
 
     /**
      * When migrating the grid for preview, we copy the table
-     * {@link LauncherSettings.Favorites.TABLE_NAME} into
-     * {@link LauncherSettings.Favorites.PREVIEW_TABLE_NAME}, run grid size migration from the
+     * {@link LauncherSettings.Favorites#TABLE_NAME} into
+     * {@link LauncherSettings.Favorites#PREVIEW_TABLE_NAME}, run grid size migration from the
      * former to the later, then use the later table for preview.
      *
      * Similarly when doing the actual grid migration, the former grid option's table
-     * {@link LauncherSettings.Favorites.TABLE_NAME} is copied into the new grid option's
-     * {@link LauncherSettings.Favorites.TMP_TABLE}, we then run the grid size migration algorithm
+     * {@link LauncherSettings.Favorites#TABLE_NAME} is copied into the new grid option's
+     * {@link LauncherSettings.Favorites#TMP_TABLE}, we then run the grid size migration algorithm
      * to migrate the later to the former, and load the workspace from the default
-     * {@link LauncherSettings.Favorites.TABLE_NAME}.
+     * {@link LauncherSettings.Favorites#TABLE_NAME}.
      *
      * @return false if the migration failed.
      */
@@ -147,10 +140,7 @@
         }
 
         SharedPreferences prefs = Utilities.getPrefs(context);
-        String gridSizeString = getPointString(idp.numColumns, idp.numRows);
         HashSet<String> validPackages = getValidPackages(context);
-        int srcHotseatCount = prefs.getInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT,
-                idp.numDatabaseHotseatIcons);
 
         if (migrateForPreview) {
             if (!LauncherSettings.Settings.call(
@@ -175,11 +165,11 @@
             DbReader srcReader = new DbReader(t.getDb(),
                     migrateForPreview ? LauncherSettings.Favorites.TABLE_NAME
                             : LauncherSettings.Favorites.TMP_TABLE,
-                    context, validPackages, srcHotseatCount);
+                    context, validPackages);
             DbReader destReader = new DbReader(t.getDb(),
                     migrateForPreview ? LauncherSettings.Favorites.PREVIEW_TABLE_NAME
                             : LauncherSettings.Favorites.TABLE_NAME,
-                    context, validPackages, idp.numDatabaseHotseatIcons);
+                    context, validPackages);
 
             Point targetSize = new Point(idp.numColumns, idp.numRows);
             GridSizeMigrationTaskV2 task = new GridSizeMigrationTaskV2(context, t.getDb(),
@@ -202,10 +192,7 @@
 
             if (!migrateForPreview) {
                 // Save current configuration, so that the migration does not run again.
-                prefs.edit()
-                        .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, gridSizeString)
-                        .putInt(KEY_MIGRATION_SRC_HOTSEAT_COUNT, idp.numDatabaseHotseatIcons)
-                        .apply();
+                new DeviceGridState(idp).writeToPrefs(context);
             }
         }
     }
@@ -504,7 +491,6 @@
         private final String mTableName;
         private final Context mContext;
         private final HashSet<String> mValidPackages;
-        private final int mHotseatSize;
         private int mLastScreenId = -1;
 
         private final ArrayList<DbEntry> mHotseatEntries = new ArrayList<>();
@@ -513,12 +499,11 @@
                 new ArrayMap<>();
 
         DbReader(SQLiteDatabase db, String tableName, Context context,
-                HashSet<String> validPackages, int hotseatSize) {
+                HashSet<String> validPackages) {
             mDb = db;
             mTableName = tableName;
             mContext = context;
             mValidPackages = validPackages;
-            mHotseatSize = hotseatSize;
         }
 
         protected ArrayList<DbEntry> loadHotseatEntries() {
@@ -543,11 +528,6 @@
                 entry.itemType = c.getInt(indexItemType);
                 entry.screenId = c.getInt(indexScreen);
 
-                if (entry.screenId >= mHotseatSize) {
-                    entriesToRemove.add(entry.id);
-                    continue;
-                }
-
                 try {
                     // calculate weight
                     switch (entry.itemType) {
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index 1378a1a..41a760b 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -759,16 +759,13 @@
                                 if (widgetProviderInfo != null
                                         && (appWidgetInfo.spanX < widgetProviderInfo.minSpanX
                                         || appWidgetInfo.spanY < widgetProviderInfo.minSpanY)) {
-                                    logDeleteWidgetInfo(mApp.getInvariantDeviceProfile(),
-                                            widgetProviderInfo);
-
-                                    // This can happen when display size changes.
-                                    c.markDeleted("Widget removed, min sizes not met: "
-                                            + "span=" + appWidgetInfo.spanX + "x"
-                                            + appWidgetInfo.spanY + " minSpan="
+                                    FileLog.d(TAG, "Widget " + widgetProviderInfo.getComponent()
+                                            + " minSizes not meet: span=" + appWidgetInfo.spanX
+                                            + "x" + appWidgetInfo.spanY + " minSpan="
                                             + widgetProviderInfo.minSpanX + "x"
                                             + widgetProviderInfo.minSpanY);
-                                    continue;
+                                    logWidgetInfo(mApp.getInvariantDeviceProfile(),
+                                            widgetProviderInfo);
                                 }
                                 if (!c.isOnWorkspaceOrHotseat()) {
                                     c.markDeleted("Widget found where container != " +
@@ -989,10 +986,8 @@
     }
 
     @SuppressLint("NewApi") // Already added API check.
-    private static void logDeleteWidgetInfo(InvariantDeviceProfile idp,
+    private static void logWidgetInfo(InvariantDeviceProfile idp,
             LauncherAppWidgetProviderInfo widgetProviderInfo) {
-        FileLog.d(TAG, "Deleting " + widgetProviderInfo.getComponent()
-                + " due to min size constraint");
         Point cellSize = new Point();
         for (DeviceProfile deviceProfile : idp.supportedProfiles) {
             deviceProfile.getCellSize(cellSize);
diff --git a/src/com/android/launcher3/provider/RestoreDbTask.java b/src/com/android/launcher3/provider/RestoreDbTask.java
index 223f4f1..8d02a4a 100644
--- a/src/com/android/launcher3/provider/RestoreDbTask.java
+++ b/src/com/android/launcher3/provider/RestoreDbTask.java
@@ -16,6 +16,7 @@
 
 package com.android.launcher3.provider;
 
+import static com.android.launcher3.model.DeviceGridState.TYPE_PHONE;
 import static com.android.launcher3.provider.LauncherDbUtils.dropTable;
 
 import android.app.backup.BackupManager;
@@ -38,6 +39,7 @@
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.logging.FileLog;
+import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.model.GridBackupTable;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
@@ -57,7 +59,7 @@
 public class RestoreDbTask {
 
     private static final String TAG = "RestoreDbTask";
-    private static final String RESTORE_TASK_PENDING = "restore_task_pending";
+    private static final String RESTORED_DEVICE_TYPE = "restored_task_pending";
 
     private static final String INFO_COLUMN_NAME = "name";
     private static final String INFO_COLUMN_DEFAULT_VALUE = "dflt_value";
@@ -65,13 +67,33 @@
     private static final String APPWIDGET_OLD_IDS = "appwidget_old_ids";
     private static final String APPWIDGET_IDS = "appwidget_ids";
 
-    public static boolean performRestore(Context context, DatabaseHelper helper,
-            BackupManager backupManager) {
+    /**
+     * Tries to restore the backup DB if needed
+     */
+    public static void restoreIfNeeded(Context context, DatabaseHelper helper) {
+        if (!isPending(context)) {
+            return;
+        }
+        if (!performRestore(context, helper)) {
+            helper.createEmptyDB(helper.getWritableDatabase());
+        }
+
+        // Set is pending to false irrespective of the result, so that it doesn't get
+        // executed again.
+        Utilities.getPrefs(context).edit().remove(RESTORED_DEVICE_TYPE).commit();
+    }
+
+    private static boolean performRestore(Context context, DatabaseHelper helper) {
+        if (new DeviceGridState(LauncherAppState.getIDP(context)).getDeviceType()
+                != Utilities.getPrefs(context).getInt(RESTORED_DEVICE_TYPE, TYPE_PHONE)) {
+            // DO not restore if the device types are different
+            return false;
+        }
         SQLiteDatabase db = helper.getWritableDatabase();
         try (SQLiteTransaction t = new SQLiteTransaction(db)) {
             RestoreDbTask task = new RestoreDbTask();
             task.backupWorkspace(context, db);
-            task.sanitizeDB(helper, db, backupManager);
+            task.sanitizeDB(helper, db, new BackupManager(context));
             task.restoreAppWidgetIdsIfExists(context);
             t.commit();
             return true;
@@ -279,12 +301,17 @@
     }
 
     public static boolean isPending(Context context) {
-        return Utilities.getPrefs(context).getBoolean(RESTORE_TASK_PENDING, false);
+        return Utilities.getPrefs(context).contains(RESTORED_DEVICE_TYPE);
     }
 
-    public static void setPending(Context context, boolean isPending) {
-        FileLog.d(TAG, "Restore data received through full backup " + isPending);
-        Utilities.getPrefs(context).edit().putBoolean(RESTORE_TASK_PENDING, isPending).commit();
+    /**
+     * Marks the DB state as pending restoration
+     */
+    public static void setPending(Context context) {
+        FileLog.d(TAG, "Restore data received through full backup ");
+        Utilities.getPrefs(context).edit()
+                .putInt(RESTORED_DEVICE_TYPE, new DeviceGridState(context).getDeviceType())
+                .commit();
     }
 
     private void restoreAppWidgetIdsIfExists(Context context) {
diff --git a/src/com/android/launcher3/testing/TestInformationHandler.java b/src/com/android/launcher3/testing/TestInformationHandler.java
index 5106992..bc5129d 100644
--- a/src/com/android/launcher3/testing/TestInformationHandler.java
+++ b/src/com/android/launcher3/testing/TestInformationHandler.java
@@ -62,6 +62,10 @@
     }
 
     public Bundle call(String method) {
+        return call(method, /*arg=*/ null);
+    }
+
+    public Bundle call(String method, String arg) {
         final Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_HOME_TO_ALL_APPS_SWIPE_HEIGHT: {
@@ -129,6 +133,10 @@
                     mDeviceProfile.isTwoPanels);
                 return response;
 
+            case TestProtocol.REQUEST_SET_FORCE_PAUSE_TIMEOUT:
+                TestProtocol.sForcePauseTimeout = Long.parseLong(arg);
+                return response;
+
             default:
                 return null;
         }
diff --git a/src/com/android/launcher3/testing/TestInformationProvider.java b/src/com/android/launcher3/testing/TestInformationProvider.java
index bd177c0..4f2619c 100644
--- a/src/com/android/launcher3/testing/TestInformationProvider.java
+++ b/src/com/android/launcher3/testing/TestInformationProvider.java
@@ -60,7 +60,7 @@
         if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
             TestInformationHandler handler = TestInformationHandler.newInstance(getContext());
             handler.init(getContext());
-            return handler.call(method);
+            return handler.call(method, arg);
         }
         return null;
     }
diff --git a/src/com/android/launcher3/testing/TestProtocol.java b/src/com/android/launcher3/testing/TestProtocol.java
index 75c0d03..d73c4b4 100644
--- a/src/com/android/launcher3/testing/TestProtocol.java
+++ b/src/com/android/launcher3/testing/TestProtocol.java
@@ -98,6 +98,9 @@
     public static final String REQUEST_IS_TABLET = "is-tablet";
     public static final String REQUEST_IS_TWO_PANELS = "is-two-panel";
 
+    public static Long sForcePauseTimeout;
+    public static final String REQUEST_SET_FORCE_PAUSE_TIMEOUT = "set-force-pause-timeout";
+
     public static boolean sDebugTracing = false;
     public static final String REQUEST_ENABLE_DEBUG_TRACING = "enable-debug-tracing";
     public static final String REQUEST_DISABLE_DEBUG_TRACING = "disable-debug-tracing";
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index 49934f7..b1278a7 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -96,6 +96,7 @@
     private static final String TAG = "Tapl";
     private static final int ZERO_BUTTON_STEPS_FROM_BACKGROUND_TO_HOME = 20;
     private static final int GESTURE_STEP_MS = 16;
+    private static final long FORCE_PAUSE_TIMEOUT_MS = 500;
 
     static final Pattern EVENT_TOUCH_DOWN = getTouchEventPattern("ACTION_DOWN");
     static final Pattern EVENT_TOUCH_UP = getTouchEventPattern("ACTION_UP");
@@ -105,6 +106,7 @@
 
     static final Pattern EVENT_TOUCH_DOWN_TIS = getTouchEventPatternTIS("ACTION_DOWN");
     static final Pattern EVENT_TOUCH_UP_TIS = getTouchEventPatternTIS("ACTION_UP");
+
     private final String mLauncherPackage;
     private Boolean mIsLauncher3;
     private long mTestStartTime = -1;
@@ -123,8 +125,6 @@
         OUTSIDE_WITHOUT_PILFER, OUTSIDE_WITH_PILFER, INSIDE, INSIDE_TO_OUTSIDE
     }
 
-    ;
-
     // Base class for launcher containers.
     static abstract class VisibleContainer {
         protected final LauncherInstrumentation mLauncher;
@@ -272,9 +272,13 @@
     }
 
     Bundle getTestInfo(String request) {
+        return getTestInfo(request, /*arg=*/ null);
+    }
+
+    Bundle getTestInfo(String request, String arg) {
         try (ContentProviderClient client = getContext().getContentResolver()
                 .acquireContentProviderClient(mTestProviderUri)) {
-            return client.call(request, null, null);
+            return client.call(request, arg, null);
         } catch (DeadObjectException e) {
             fail("Launcher crashed");
             return null;
@@ -298,6 +302,10 @@
             .getBoolean(TestProtocol.TEST_INFO_RESPONSE_FIELD);
     }
 
+    private void setForcePauseTimeout(long timeout) {
+        getTestInfo(TestProtocol.REQUEST_SET_FORCE_PAUSE_TIMEOUT, Long.toString(timeout));
+    }
+
     void setActiveContainer(VisibleContainer container) {
         sActiveContainer = new WeakReference<>(container);
     }
@@ -730,6 +738,7 @@
             final String action;
             if (getNavigationModel() == NavigationModel.ZERO_BUTTON) {
                 checkForAnomaly();
+                setForcePauseTimeout(FORCE_PAUSE_TIMEOUT_MS);
 
                 final Point displaySize = getRealDisplaySize();
                 boolean gestureStartFromLauncher = isTablet()