Merge "Merging MultiValueAlpha with MultiPropertyFactory" into tm-qpr-dev
diff --git a/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java b/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java
index f450496..729eea9 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/ApiWrapper.java
@@ -17,10 +17,18 @@
 package com.android.launcher3.uioverrides;
 
 import android.app.Person;
+import android.appwidget.AppWidgetHost;
 import android.content.pm.ShortcutInfo;
 
-import com.android.launcher3.Utilities;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
+import com.android.launcher3.Utilities;
+import com.android.launcher3.widget.LauncherAppWidgetHost;
+
+/**
+ * A wrapper for the hidden API calls
+ */
 public class ApiWrapper {
 
     public static final boolean TASKBAR_DRAWN_IN_PROCESS = true;
@@ -29,4 +37,14 @@
         Person[] persons = si.getPersons();
         return persons == null ? Utilities.EMPTY_PERSON_ARRAY : persons;
     }
+
+    /**
+     * Set the interaction handler for the host
+     * @param host AppWidgetHost that needs the interaction handler
+     * @param handler InteractionHandler for the views in the host
+     */
+    public static void setHostInteractionHandler(@NonNull AppWidgetHost host,
+            @Nullable LauncherAppWidgetHost.LauncherWidgetInteractionHandler handler) {
+        host.setInteractionHandler(handler::onInteraction);
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepInteractionHandler.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepInteractionHandler.java
index 08d147f..2dde6b6 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepInteractionHandler.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepInteractionHandler.java
@@ -33,10 +33,12 @@
 import com.android.launcher3.logging.StatsLogManager;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.util.ActivityOptionsWrapper;
+import com.android.launcher3.widget.LauncherAppWidgetHost;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
 
 /** Provides a Quickstep specific animation when launching an activity from an app widget. */
-class QuickstepInteractionHandler implements RemoteViews.InteractionHandler {
+class QuickstepInteractionHandler implements
+        LauncherAppWidgetHost.LauncherWidgetInteractionHandler {
 
     private static final String TAG = "QuickstepInteractionHandler";
 
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index c962de2..df39111 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -489,7 +489,8 @@
 
     protected LauncherAppWidgetHost createAppWidgetHost() {
         LauncherAppWidgetHost appWidgetHost = super.createAppWidgetHost();
-        appWidgetHost.setInteractionHandler(new QuickstepInteractionHandler(this));
+        ApiWrapper.setHostInteractionHandler(appWidgetHost,
+                new QuickstepInteractionHandler(this));
         return appWidgetHost;
     }
 
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index 267593a..d4b713b 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -1834,6 +1834,17 @@
                         if (mRecentsAnimationController == null) return;
                         final ThumbnailData taskSnapshot =
                                 mRecentsAnimationController.screenshotTask(runningTaskId);
+                        // If split case, we should update all split tasks snapshot
+                        if (mIsSwipeForSplit) {
+                            int[] splitTaskIds = TopTaskTracker.INSTANCE.get(
+                                    mContext).getRunningSplitTaskIds();
+                            for (int i = 0; i < splitTaskIds.length; i++) {
+                                // Skip running one because done above.
+                                if (splitTaskIds[i] == runningTaskId) continue;
+
+                                mRecentsAnimationController.screenshotTask(splitTaskIds[i]);
+                            }
+                        }
                         MAIN_EXECUTOR.execute(() -> {
                             mTaskSnapshot = taskSnapshot;
                             if (!updateThumbnail(runningTaskId, false /* refreshView */)) {
diff --git a/quickstep/src/com/android/quickstep/inputconsumers/OtherActivityInputConsumer.java b/quickstep/src/com/android/quickstep/inputconsumers/OtherActivityInputConsumer.java
index 7ccd8af..60d5ba4 100644
--- a/quickstep/src/com/android/quickstep/inputconsumers/OtherActivityInputConsumer.java
+++ b/quickstep/src/com/android/quickstep/inputconsumers/OtherActivityInputConsumer.java
@@ -39,8 +39,6 @@
 import android.content.Intent;
 import android.graphics.PointF;
 import android.os.Build;
-import android.os.Handler;
-import android.os.Looper;
 import android.util.Log;
 import android.view.MotionEvent;
 import android.view.VelocityTracker;
@@ -57,7 +55,6 @@
 import com.android.launcher3.util.TraceHelper;
 import com.android.quickstep.AbsSwipeUpHandler;
 import com.android.quickstep.AbsSwipeUpHandler.Factory;
-import com.android.quickstep.BaseActivityInterface;
 import com.android.quickstep.GestureState;
 import com.android.quickstep.InputConsumer;
 import com.android.quickstep.RecentsAnimationCallbacks;
@@ -70,7 +67,6 @@
 import com.android.quickstep.util.CachedEventDispatcher;
 import com.android.quickstep.util.MotionPauseDetector;
 import com.android.quickstep.util.NavBarPosition;
-import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.InputChannelCompat.InputEventReceiver;
 import com.android.systemui.shared.system.InputMonitorCompat;
 
@@ -101,7 +97,6 @@
     private final CachedEventDispatcher mRecentsViewDispatcher = new CachedEventDispatcher();
     private final InputMonitorCompat mInputMonitorCompat;
     private final InputEventReceiver mInputEventReceiver;
-    private final BaseActivityInterface mActivityInterface;
 
     private final AbsSwipeUpHandler.Factory mHandlerFactory;
 
@@ -136,12 +131,6 @@
     // Might be displacement in X or Y, depending on the direction we are swiping from the nav bar.
     private float mStartDisplacement;
 
-    private Handler mMainThreadHandler;
-    private Runnable mCancelRecentsAnimationRunnable = () -> {
-        ActivityManagerWrapper.getInstance().cancelRecentsAnimation(
-                true /* restoreHomeStackPosition */);
-    };
-
     public OtherActivityInputConsumer(Context base, RecentsAnimationDeviceState deviceState,
             TaskAnimationManager taskAnimationManager, GestureState gestureState,
             boolean isDeferredDownTarget, Consumer<OtherActivityInputConsumer> onCompleteCallback,
@@ -152,9 +141,7 @@
         mNavBarPosition = mDeviceState.getNavBarPosition();
         mTaskAnimationManager = taskAnimationManager;
         mGestureState = gestureState;
-        mMainThreadHandler = new Handler(Looper.getMainLooper());
         mHandlerFactory = handlerFactory;
-        mActivityInterface = mGestureState.getActivityInterface();
 
         mMotionPauseDetector = new MotionPauseDetector(base, false,
                 mNavBarPosition.isLeftEdge() || mNavBarPosition.isRightEdge()
@@ -437,13 +424,6 @@
             }
             onConsumerAboutToBeSwitched();
             onInteractionGestureFinished();
-
-            // Cancel the recents animation if SysUI happens to handle UP before we have a chance
-            // to start the recents animation. In addition, workaround for b/126336729 by delaying
-            // the cancel of the animation for a period, in case SysUI is slow to handle UP and we
-            // handle DOWN & UP and move the home stack before SysUI can start the activity
-            mMainThreadHandler.removeCallbacks(mCancelRecentsAnimationRunnable);
-            mMainThreadHandler.postDelayed(mCancelRecentsAnimationRunnable, 100);
         }
         cleanupAfterGesture();
         TraceHelper.INSTANCE.endSection(traceToken);
@@ -465,7 +445,6 @@
     @Override
     public void onConsumerAboutToBeSwitched() {
         Preconditions.assertUIThread();
-        mMainThreadHandler.removeCallbacks(mCancelRecentsAnimationRunnable);
         if (mInteractionHandler != null) {
             // The consumer is being switched while we are active. Set up the shared state to be
             // used by the next animation
diff --git a/quickstep/src/com/android/quickstep/logging/StatsLogCompatManager.java b/quickstep/src/com/android/quickstep/logging/StatsLogCompatManager.java
index 0c422a0..791f93b 100644
--- a/quickstep/src/com/android/quickstep/logging/StatsLogCompatManager.java
+++ b/quickstep/src/com/android/quickstep/logging/StatsLogCompatManager.java
@@ -217,6 +217,7 @@
         private Optional<String> mEditText = Optional.empty();
         private SliceItem mSliceItem;
         private LauncherAtom.Slice mSlice;
+        private Optional<Integer> mCardinality = Optional.empty();
 
         StatsCompatLogger(Context context, ActivityContext activityContext) {
             mContext = context;
@@ -304,6 +305,12 @@
         }
 
         @Override
+        public StatsLogger withCardinality(int cardinality) {
+            this.mCardinality = Optional.of(cardinality);
+            return this;
+        }
+
+        @Override
         public void log(EventEnum event) {
             if (!Utilities.ATLEAST_R) {
                 return;
@@ -421,6 +428,7 @@
             if (Utilities.IS_RUNNING_IN_TEST_HARNESS) {
                 return;
             }
+            int cardinality = mCardinality.orElseGet(() -> getCardinality(atomInfo));
             SysUiStatsLog.write(
                     SysUiStatsLog.LAUNCHER_EVENT,
                     SysUiStatsLog.LAUNCHER_UICHANGED__ACTION__DEFAULT_ACTION /* deprecated */,
@@ -446,7 +454,7 @@
                     atomInfo.getFolderIcon().getFromLabelState().getNumber() /* fromState */,
                     atomInfo.getFolderIcon().getToLabelState().getNumber() /* toState */,
                     atomInfo.getFolderIcon().getLabelInfo() /* edittext */,
-                    getCardinality(atomInfo) /* cardinality */,
+                    cardinality /* cardinality */,
                     getFeatures(atomInfo) /* features */,
                     getSearchAttributes(atomInfo) /* searchAttributes */,
                     getAttributes(atomInfo) /* attributes */
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index ecb0808..fe8b364 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -224,8 +224,8 @@
     // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget)
     private float mXDown;
     private float mYDown;
-    private View mQsb;
-    private boolean mIsEventOverQsb;
+    private View mFirstPagePinnedItem;
+    private boolean mIsEventOverFirstPagePinnedItem;
 
     final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6;
     final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3;
@@ -575,20 +575,22 @@
 
         // Add the first page
         CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, getChildCount());
-        // Always add a QSB on the first screen.
-        if (mQsb == null) {
-            // In transposed layout, we add the QSB in the Grid. As workspace does not touch the
-            // edges, we do not need a full width QSB.
-            mQsb = LayoutInflater.from(getContext())
+        // Always add a first page pinned widget on the first screen.
+        if (mFirstPagePinnedItem == null) {
+            // In transposed layout, we add the first page pinned widget in the Grid.
+            // As workspace does not touch the edges, we do not need a full
+            // width first page pinned widget.
+            mFirstPagePinnedItem = LayoutInflater.from(getContext())
                     .inflate(R.layout.search_container_workspace, firstPage, false);
         }
 
         int cellHSpan = mLauncher.getDeviceProfile().inv.numSearchContainerColumns;
         CellLayoutLayoutParams lp = new CellLayoutLayoutParams(0, 0, cellHSpan, 1);
         lp.canReorder = false;
-        if (!firstPage.addViewToCellLayout(mQsb, 0, R.id.search_container_workspace, lp, true)) {
+        if (!firstPage.addViewToCellLayout(
+                mFirstPagePinnedItem, 0, R.id.search_container_workspace, lp, true)) {
             Log.e(TAG, "Failed to add to item at (0, 0) to CellLayout");
-            mQsb = null;
+            mFirstPagePinnedItem = null;
         }
     }
 
@@ -597,9 +599,9 @@
         // transition animations competing with us changing the scroll when we add pages
         disableLayoutTransitions();
 
-        // Recycle the QSB widget
-        if (mQsb != null) {
-            ((ViewGroup) mQsb.getParent()).removeView(mQsb);
+        // Recycle the first page pinned widget
+        if (mFirstPagePinnedItem != null) {
+            ((ViewGroup) mFirstPagePinnedItem.getParent()).removeView(mFirstPagePinnedItem);
         }
 
         // Remove the pages and clear the screen models
@@ -919,8 +921,8 @@
         return mScreenOrder;
     }
 
-    protected View getQsb() {
-        return mQsb;
+    protected View getFirstPagePinnedItem() {
+        return mFirstPagePinnedItem;
     }
 
     /**
@@ -1074,20 +1076,22 @@
 
         mXDown = ev.getX();
         mYDown = ev.getY();
-        if (mQsb != null) {
+        if (mFirstPagePinnedItem != null) {
             mTempFXY[0] = mXDown + getScrollX();
             mTempFXY[1] = mYDown + getScrollY();
-            Utilities.mapCoordInSelfToDescendant(mQsb, this, mTempFXY);
-            mIsEventOverQsb = mQsb.getLeft() <= mTempFXY[0] && mQsb.getRight() >= mTempFXY[0]
-                    && mQsb.getTop() <= mTempFXY[1] && mQsb.getBottom() >= mTempFXY[1];
+            Utilities.mapCoordInSelfToDescendant(mFirstPagePinnedItem, this, mTempFXY);
+            mIsEventOverFirstPagePinnedItem = mFirstPagePinnedItem.getLeft() <= mTempFXY[0]
+                    && mFirstPagePinnedItem.getRight() >= mTempFXY[0]
+                    && mFirstPagePinnedItem.getTop() <= mTempFXY[1]
+                    && mFirstPagePinnedItem.getBottom() >= mTempFXY[1];
         } else {
-            mIsEventOverQsb = false;
+            mIsEventOverFirstPagePinnedItem = false;
         }
     }
 
     @Override
     protected void determineScrollingStart(MotionEvent ev) {
-        if (!isFinishedSwitchingState() || mIsEventOverQsb) return;
+        if (!isFinishedSwitchingState() || mIsEventOverFirstPagePinnedItem) return;
 
         float deltaX = ev.getX() - mXDown;
         float absDeltaX = Math.abs(deltaX);
@@ -2538,10 +2542,10 @@
     }
 
     private boolean isDragObjectOverSmartSpace(DragObject dragObject) {
-        if (mQsb == null) {
+        if (mFirstPagePinnedItem == null) {
             return false;
         }
-        getViewBoundsRelativeToWorkspace(mQsb, mTempRect);
+        getViewBoundsRelativeToWorkspace(mFirstPagePinnedItem, mTempRect);
         return mTempRect.contains(dragObject.x, dragObject.y);
     }
 
diff --git a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
index 7699a1a..62e7ef3 100644
--- a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
+++ b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
@@ -35,6 +35,7 @@
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.anim.Interpolators.ZOOM_OUT;
 import static com.android.launcher3.anim.PropertySetter.NO_ANIM_PROPERTY_SETTER;
+import static com.android.launcher3.config.FeatureFlags.HOME_GARDENING_WORKSPACE_BUTTONS;
 import static com.android.launcher3.config.FeatureFlags.SHOW_HOME_GARDENING;
 import static com.android.launcher3.graphics.Scrim.SCRIM_PROGRESS;
 import static com.android.launcher3.graphics.SysUiScrim.SYSUI_PROGRESS;
@@ -71,7 +72,7 @@
  */
 public class WorkspaceStateTransitionAnimation {
 
-    private static final float QSB_DISABLED_ALPHA = 0.3f;
+    private static final float FIRST_PAGE_PINNED_WIDGET_DISABLED_ALPHA = 0.3f;
 
     private static final FloatProperty<Workspace<?>> WORKSPACE_SCALE_PROPERTY =
             WORKSPACE_SCALE_PROPERTY_FACTORY.get(SCALE_INDEX_WORKSPACE_STATE);
@@ -161,12 +162,24 @@
 
         if (SHOW_HOME_GARDENING.get()) {
             propertySetter.setViewAlpha(
-                    mWorkspace.getQsb(),
-                    state == SPRING_LOADED ? QSB_DISABLED_ALPHA : 1,
+                    mWorkspace.getFirstPagePinnedItem(),
+                    state == SPRING_LOADED ? FIRST_PAGE_PINNED_WIDGET_DISABLED_ALPHA : 1,
                     workspaceFadeInterpolator);
             propertySetter.addEndListener(success -> {
                 if (success) {
-                    mWorkspace.getQsb().setClickable(state != SPRING_LOADED);
+                    mWorkspace.getFirstPagePinnedItem().setClickable(state != SPRING_LOADED);
+                }
+            });
+        }
+
+        if (HOME_GARDENING_WORKSPACE_BUTTONS.get()) {
+            propertySetter.setViewAlpha(
+                    mLauncher.getHotseat().getQsb(),
+                    state == SPRING_LOADED ? 0 : 1,
+                    workspaceFadeInterpolator);
+            propertySetter.addEndListener(success -> {
+                if (success) {
+                    mLauncher.getHotseat().getQsb().setClickable(state != SPRING_LOADED);
                 }
             });
         }
diff --git a/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java b/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java
index 7f6247e..2ff992e 100644
--- a/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/BaseAllAppsContainerView.java
@@ -15,6 +15,7 @@
  */
 package com.android.launcher3.allapps;
 
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ALLAPPS_COUNT;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ALLAPPS_TAP_ON_PERSONAL_TAB;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ALLAPPS_TAP_ON_WORK_TAB;
 
@@ -245,6 +246,10 @@
                 mWorkManager.reset();
             }
         }
+
+        mActivityContext.getStatsLogManager().logger()
+                .withCardinality(mAllAppsStore.getApps().length)
+                .log(LAUNCHER_ALLAPPS_COUNT);
     }
 
     /**
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 75c28f9..3accf84 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -285,17 +285,21 @@
     public static final BooleanFlag ENABLE_WIDGET_PICKER_DEPTH = new DeviceFlag(
             "ENABLE_WIDGET_PICKER_DEPTH", true, "Enable changing depth in widget picker.");
 
-    public static final BooleanFlag SHOW_DELIGHTFUL_PAGINATION = new DeviceFlag(
+    public static final BooleanFlag SHOW_DELIGHTFUL_PAGINATION = getDebugFlag(
             "SHOW_DELIGHTFUL_PAGINATION", false,
             "Enable showing the new 'delightful pagination' which is a brand"
                     + " new animation for folder pagination and workspace pagination");
     public static final BooleanFlag POPUP_MATERIAL_U = new DeviceFlag(
             "POPUP_MATERIAL_U", false, "Switch popup UX to use material U");
 
-    public static final BooleanFlag SHOW_HOME_GARDENING = new DeviceFlag(
+    public static final BooleanFlag SHOW_HOME_GARDENING = getDebugFlag(
             "SHOW_HOME_GARDENING", false,
             "Show the new home gardening mode");
 
+    public static final BooleanFlag HOME_GARDENING_WORKSPACE_BUTTONS = getDebugFlag(
+            "HOME_GARDENING_WORKSPACE_BUTTONS", false,
+            "Change workspace edit buttons to reflect home gardening");
+
     public static final BooleanFlag ENABLE_TRANSIENT_TASKBAR = getDebugFlag(
             "ENABLE_TRANSIENT_TASKBAR", false, "Enables transient taskbar.");
 
@@ -303,6 +307,9 @@
             "SECONDARY_DRAG_N_DROP_TO_PIN", false,
             "Enable dragging and dropping to pin apps within secondary display");
 
+    public static final BooleanFlag SHOW_DOT_PAGINATION = getDebugFlag(
+            "SHOW_DOT_PAGINATION", false, "Enable showing dot pagination in workspace");
+
     public static void initialize(Context context) {
         synchronized (sDebugFlags) {
             for (DebugFlag flag : sDebugFlags) {
diff --git a/src/com/android/launcher3/folder/FolderPagedView.java b/src/com/android/launcher3/folder/FolderPagedView.java
index 0bcb97a..efd511d 100644
--- a/src/com/android/launcher3/folder/FolderPagedView.java
+++ b/src/com/android/launcher3/folder/FolderPagedView.java
@@ -113,6 +113,7 @@
     public void setFolder(Folder folder) {
         mFolder = folder;
         mPageIndicator = folder.findViewById(R.id.folder_page_indicator);
+        mPageIndicator.setShouldAutoHide(false);
         initParentViews(folder);
     }
 
diff --git a/src/com/android/launcher3/logging/StatsLogManager.java b/src/com/android/launcher3/logging/StatsLogManager.java
index 837e47a..05f53fd 100644
--- a/src/com/android/launcher3/logging/StatsLogManager.java
+++ b/src/com/android/launcher3/logging/StatsLogManager.java
@@ -612,7 +612,11 @@
         LAUNCHER_APP_ICON_MENU_SPLIT_RIGHT_BOTTOM(1199),
 
         @UiEvent(doc = "User has invoked split to left half from an app icon menu")
-        LAUNCHER_APP_ICON_MENU_SPLIT_LEFT_TOP(1200)
+        LAUNCHER_APP_ICON_MENU_SPLIT_LEFT_TOP(1200),
+
+        @UiEvent(doc = "Number of apps in A-Z list (personal and work profile)")
+        LAUNCHER_ALLAPPS_COUNT(1225),
+
         ;
 
         // ADD MORE
@@ -734,6 +738,13 @@
         }
 
         /**
+         * Sets cardinality of log message.
+         */
+        default StatsLogger withCardinality(int cardinality) {
+            return this;
+        }
+
+        /**
          * Builds the final message and logs it as {@link EventEnum}.
          */
         default void log(EventEnum event) {
diff --git a/src/com/android/launcher3/pageindicators/PageIndicatorDots.java b/src/com/android/launcher3/pageindicators/PageIndicatorDots.java
index 98ce951..3770de8 100644
--- a/src/com/android/launcher3/pageindicators/PageIndicatorDots.java
+++ b/src/com/android/launcher3/pageindicators/PageIndicatorDots.java
@@ -32,13 +32,18 @@
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.drawable.Drawable;
+import android.os.Handler;
+import android.os.Looper;
 import android.util.AttributeSet;
-import android.util.Property;
+import android.util.FloatProperty;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.view.ViewOutlineProvider;
 import android.view.animation.Interpolator;
 import android.view.animation.OvershootInterpolator;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.Insettable;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
@@ -54,6 +59,8 @@
     private static final float SHIFT_PER_ANIMATION = 0.5f;
     private static final float SHIFT_THRESHOLD = 0.1f;
     private static final long ANIMATION_DURATION = 150;
+    private static final int PAGINATION_FADE_DELAY = ViewConfiguration.getScrollDefaultDelay();
+    private static final int ALPHA_ANIMATE_DURATION = ViewConfiguration.getScrollBarFadeDuration();
 
     private static final int ENTER_ANIMATION_START_DELAY = 300;
     private static final int ENTER_ANIMATION_STAGGERED_DELAY = 150;
@@ -63,6 +70,9 @@
     private static final int DOT_ALPHA = 128;
     private static final int DOT_GAP_FACTOR = 3;
     private static final float DOT_GAP_FACTOR_FLOAT = 3.8f;
+    private static final int VISIBLE_ALPHA = 1;
+    private static final int INVISIBLE_ALPHA = 0;
+    private Paint mPaginationPaint;
 
     // This value approximately overshoots to 1.5 times the original size.
     private static final float ENTER_ANIMATION_OVERSHOOT_TENSION = 4.9f;
@@ -71,22 +81,36 @@
 
     private static final RectF sTempRect = new RectF();
 
-    private static final Property<PageIndicatorDots, Float> CURRENT_POSITION
-            = new Property<PageIndicatorDots, Float>(float.class, "current_position") {
-        @Override
-        public Float get(PageIndicatorDots obj) {
-            return obj.mCurrentPosition;
-        }
+    private static final FloatProperty<PageIndicatorDots> CURRENT_POSITION =
+            new FloatProperty<PageIndicatorDots>("current_position") {
+                @Override
+                public Float get(PageIndicatorDots obj) {
+                    return obj.mCurrentPosition;
+                }
 
-        @Override
-        public void set(PageIndicatorDots obj, Float pos) {
-            obj.mCurrentPosition = pos;
-            obj.invalidate();
-            obj.invalidateOutline();
-        }
-    };
+                @Override
+                public void setValue(PageIndicatorDots obj, float pos) {
+                    obj.mCurrentPosition = pos;
+                    obj.invalidate();
+                    obj.invalidateOutline();
+                }
+            };
 
-    private final Paint mPaginationPaint;
+    private static final FloatProperty<PageIndicatorDots> PAGINATION_ALPHA =
+            new FloatProperty<PageIndicatorDots>("pagination_alpha") {
+                @Override
+                public Float get(PageIndicatorDots obj) {
+                    return obj.getAlpha();
+                }
+
+                @Override
+                public void setValue(PageIndicatorDots obj, float alpha) {
+                    obj.setAlpha(alpha);
+                    obj.invalidate();
+                }
+            };
+
+    private final Handler mDelayedPaginationFadeHandler = new Handler(Looper.getMainLooper());
     private final Drawable mPageIndicatorDrawable;
     private final float mDotRadius;
     private final float mCircleGap;
@@ -98,6 +122,8 @@
     private int mActivePage;
     private int mCurrentScroll;
     private int mTotalScroll;
+    private boolean mShouldAutoHide = true;
+    private int mToAlpha;
 
     /**
      * The current position of the active dot including the animation progress.
@@ -111,9 +137,12 @@
     private float mCurrentPosition;
     private float mFinalPosition;
     private ObjectAnimator mAnimator;
+    private @Nullable ObjectAnimator mAlphaAnimator;
 
     private float[] mEntryAnimationRadiusFactors;
 
+    private Runnable mHidePaginationRunnable = () -> animatePaginationToAlpha(INVISIBLE_ALPHA);
+
     public PageIndicatorDots(Context context) {
         this(context, null);
     }
@@ -153,6 +182,8 @@
 
     @Override
     public void setScroll(int currentScroll, int totalScroll) {
+        animatePaginationToAlpha(VISIBLE_ALPHA);
+
         if (mNumPages <= 1) {
             mCurrentScroll = 0;
             return;
@@ -166,6 +197,11 @@
             mCurrentScroll = currentScroll;
             mTotalScroll = totalScroll;
             invalidate();
+
+            if (mShouldAutoHide
+                    && (getScrollPerPage() == 0 || mCurrentScroll % getScrollPerPage() == 0)) {
+                hideAfterDelay();
+            }
             return;
         }
 
@@ -187,6 +223,64 @@
         }
     }
 
+    @Override
+    public void setShouldAutoHide(boolean shouldAutoHide) {
+        mShouldAutoHide = shouldAutoHide;
+        if (shouldAutoHide && this.getAlpha() > INVISIBLE_ALPHA) {
+            hideAfterDelay();
+        } else if (!shouldAutoHide) {
+            mDelayedPaginationFadeHandler.removeCallbacksAndMessages(null);
+        }
+    }
+
+    private void hideAfterDelay() {
+        mDelayedPaginationFadeHandler.removeCallbacksAndMessages(null);
+        mDelayedPaginationFadeHandler.postDelayed(mHidePaginationRunnable, PAGINATION_FADE_DELAY);
+    }
+
+    private void animatePaginationToAlpha(int alpha) {
+        if (alpha == mToAlpha) {
+            // Ignore the new animation if it is going to the same alpha as the current animation.
+            return;
+        }
+        mToAlpha = alpha;
+
+        if (mAlphaAnimator != null) {
+            mAlphaAnimator.cancel();
+        }
+        mAlphaAnimator = ObjectAnimator.ofFloat(this, PAGINATION_ALPHA,
+                alpha);
+        mAlphaAnimator.setDuration(ALPHA_ANIMATE_DURATION);
+        mAlphaAnimator.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mAlphaAnimator = null;
+            }
+        });
+        mAlphaAnimator.start();
+
+    }
+
+    /**
+     * Pauses all currently running animations.
+     */
+    @Override
+    public void pauseAnimations() {
+        if (mAlphaAnimator != null) {
+            mAlphaAnimator.pause();
+        }
+    }
+
+    /**
+     * Force-ends all currently running or paused animations.
+     */
+    @Override
+    public void skipAnimationsToEnd() {
+        if (mAlphaAnimator != null) {
+            mAlphaAnimator.end();
+        }
+    }
+
     private void animateToPosition(float position) {
         mFinalPosition = position;
         if (Math.abs(mCurrentPosition - mFinalPosition) < SHIFT_THRESHOLD) {
@@ -282,6 +376,10 @@
 
     @Override
     protected void onDraw(Canvas canvas) {
+        if ((mShouldAutoHide && mTotalScroll == 0) || mNumPages < 2) {
+            return;
+        }
+
         // Draw all page indicators;
         float circleGap = mCircleGap;
         float startX = (getWidth() - (mNumPages * circleGap) + mDotRadius) / 2;
diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetHost.java b/src/com/android/launcher3/widget/LauncherAppWidgetHost.java
index 3e80699..fff8fbb 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetHost.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetHost.java
@@ -18,6 +18,7 @@
 
 import static android.app.Activity.RESULT_CANCELED;
 
+import android.app.PendingIntent;
 import android.appwidget.AppWidgetHost;
 import android.appwidget.AppWidgetHostView;
 import android.appwidget.AppWidgetManager;
@@ -28,6 +29,7 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.util.SparseArray;
+import android.view.View;
 import android.widget.RemoteViews;
 import android.widget.Toast;
 
@@ -80,6 +82,24 @@
 
     private IntConsumer mAppWidgetRemovedCallback = null;
 
+    /**
+     * This serves for the purpose of getting rid of the hidden API calling of InteractionHandler
+     */
+    public interface LauncherWidgetInteractionHandler {
+        /**
+         * Invoked when the user performs an interaction on the View.
+         *
+         * @param view the View with which the user interacted
+         * @param pendingIntent the base PendingIntent associated with the view
+         * @param response the response to the interaction, which knows how to fill in the
+         *                 attached PendingIntent
+         */
+        boolean onInteraction(
+                View view,
+                PendingIntent pendingIntent,
+                RemoteViews.RemoteResponse response);
+    }
+
     public LauncherAppWidgetHost(Context context) {
         this(context, null);
     }
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java b/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java
index c8b5e2f..ea0f5a3 100644
--- a/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java
+++ b/src_ui_overrides/com/android/launcher3/uioverrides/ApiWrapper.java
@@ -17,10 +17,18 @@
 package com.android.launcher3.uioverrides;
 
 import android.app.Person;
+import android.appwidget.AppWidgetHost;
 import android.content.pm.ShortcutInfo;
 
-import com.android.launcher3.Utilities;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
+import com.android.launcher3.Utilities;
+import com.android.launcher3.widget.LauncherAppWidgetHost;
+
+/**
+ * A wrapper for the hidden API calls
+ */
 public class ApiWrapper {
 
     public static final boolean TASKBAR_DRAWN_IN_PROCESS = false;
@@ -28,4 +36,14 @@
     public static Person[] getPersons(ShortcutInfo si) {
         return Utilities.EMPTY_PERSON_ARRAY;
     }
+
+    /**
+     * Set the interaction handler for the host
+     * @param host AppWidgetHost that needs the interaction handler
+     * @param handler InteractionHandler for the views in the host
+     */
+    public static void setHostInteractionHandler(@NonNull AppWidgetHost host,
+            @Nullable LauncherAppWidgetHost.LauncherWidgetInteractionHandler handler) {
+        // No-op
+    }
 }