1 files changed, 33 insertions, 0 deletions
diff --git a/go/quickstep/src/com/android/quickstep/AppToOverviewAnimationProvider.java b/go/quickstep/src/com/android/quickstep/AppToOverviewAnimationProvider.java
index 62e40d194..c03222db1 100644
--- a/go/quickstep/src/com/android/quickstep/AppToOverviewAnimationProvider.java
+++ b/go/quickstep/src/com/android/quickstep/AppToOverviewAnimationProvider.java
@@ -42,6 +42,7 @@ final class AppToOverviewAnimationProvider<T extends BaseDraggingActivity> imple
     private final ActivityControlHelper<T> mHelper;
     private final int mTargetTaskId;
     private IconRecentsView mRecentsView;
+    private AppToOverviewAnimationListener mAnimationReadyListener;
 
     AppToOverviewAnimationProvider(ActivityControlHelper<T> helper, int targetTaskId) {
         mHelper = helper;
@@ -49,12 +50,24 @@ final class AppToOverviewAnimationProvider<T extends BaseDraggingActivity> imple
     }
 
     /**
+     * Set listener to various points in the animation preparing to animate.
+     *
+     * @param listener listener
+     */
+    void setAnimationListener(AppToOverviewAnimationListener listener) {
+        mAnimationReadyListener = listener;
+    }
+
+    /**
      * Callback for when the activity is ready/initialized.
      *
      * @param activity the activity that is ready
      * @param wasVisible true if it was visible before
      */
     boolean onActivityReady(T activity, Boolean wasVisible) {
+        if (mAnimationReadyListener != null) {
+            mAnimationReadyListener.onActivityReady(activity);
+        }
         ActivityControlHelper.AnimationFactory factory =
                 mHelper.prepareRecentsUI(activity, wasVisible,
                         false /* animate activity */, (controller) -> {
@@ -79,6 +92,9 @@ final class AppToOverviewAnimationProvider<T extends BaseDraggingActivity> imple
      */
     @Override
     public AnimatorSet createWindowAnimation(RemoteAnimationTargetCompat[] targetCompats) {
+        if (mAnimationReadyListener != null) {
+            mAnimationReadyListener.onWindowAnimationCreated();
+        }
         AnimatorSet anim = new AnimatorSet();
         if (mRecentsView == null) {
             if (Log.isLoggable(TAG, Log.WARN)) {
@@ -131,4 +147,21 @@ final class AppToOverviewAnimationProvider<T extends BaseDraggingActivity> imple
     long getRecentsLaunchDuration() {
         return REMOTE_APP_TO_OVERVIEW_DURATION;
     }
+
+    /**
+     * Listener for various points in the app to overview animation preparing to animate.
+     */
+    interface AppToOverviewAnimationListener {
+        /**
+         * Logic for when activity we're animating to is ready
+         *
+         * @param activity activity to animate to
+         */
+        void onActivityReady(BaseDraggingActivity activity);
+
+        /**
+         * Logic for when we've created the app to recents animation.
+         */
+        void onWindowAnimationCreated();
+    }
 }