commit c302baced05a39ac908a106998d300b9989df750
author Sunny Goyal <sunnygoyal@google.com> Mon Jul 29 11:10:04 2019 -0700
committer Sunny Goyal <sunnygoyal@google.com> Mon Jul 29 11:55:11 2019 -0700
tree b997e51f50c658f0b4d4668624940352ce9b3af1
parent fa652a8a4f91482ea066388e935944846847f582

Notifying the geature guide app when back gesture is performed
so that user onboarding can the updated accordingly

Bug: 138403212
Change-Id: Ib4e1cde0b2c746f955d5a58251c8ab653dadbc67

quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java

diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
index e1daea5..98c5502 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
@@ -69,6 +69,7 @@
 
 import androidx.annotation.BinderThread;
 import androidx.annotation.UiThread;
+import androidx.annotation.WorkerThread;
 
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.MainThreadExecutor;
@@ -146,6 +147,11 @@
 
     private static final String TAG = "TouchInteractionService";
 
+    private static final String KEY_BACK_NOTIFICATION_COUNT = "backNotificationCount";
+    private static final String NOTIFY_ACTION_BACK = "com.android.quickstep.action.BACK_GESTURE";
+    private static final int MAX_BACK_NOTIFICATION_COUNT = 3;
+    private int mBackGestureNotificationCounter = -1;
+
     private final IBinder mMyBinder = new IOverviewProxy.Stub() {
 
         public void onActiveNavBarRegionChanges(Region region) {
@@ -206,6 +212,10 @@
                     mOverviewComponentObserver.getActivityControlHelper();
             UserEventDispatcher.newInstance(getBaseContext()).logActionBack(completed, downX, downY,
                     isButton, gestureSwipeLeft, activityControl.getContainerType());
+
+            if (completed && !isButton && shouldNotifyBackGesture()) {
+                BACKGROUND_EXECUTOR.execute(TouchInteractionService.this::tryNotifyBackGesture);
+            }
         }
 
         public void onSystemUiStateChanged(int stateFlags) {
@@ -480,6 +490,8 @@
 
         // Temporarily disable model preload
         // new ModelPreload().start(this);
+        mBackGestureNotificationCounter = Math.max(0, Utilities.getDevicePrefs(this)
+                .getInt(KEY_BACK_NOTIFICATION_COUNT, MAX_BACK_NOTIFICATION_COUNT));
 
         Utilities.unregisterReceiverSafely(this, mUserUnlockedReceiver);
     }
@@ -866,6 +878,22 @@
                 mRecentsModel, mInputConsumer, isLikelyToStartNewTask, continuingLastGesture);
     }
 
+    protected boolean shouldNotifyBackGesture() {
+        return mBackGestureNotificationCounter > 0 &&
+                mGestureBlockingActivity != null;
+    }
+
+    @WorkerThread
+    protected void tryNotifyBackGesture() {
+        if (shouldNotifyBackGesture()) {
+            mBackGestureNotificationCounter--;
+            Utilities.getDevicePrefs(this).edit()
+                    .putInt(KEY_BACK_NOTIFICATION_COUNT, mBackGestureNotificationCounter).apply();
+            sendBroadcast(new Intent(NOTIFY_ACTION_BACK).setPackage(
+                    mGestureBlockingActivity.getPackageName()));
+        }
+    }
+
     public static void startRecentsActivityAsync(Intent intent, RecentsAnimationListener listener) {
         BACKGROUND_EXECUTOR.execute(() -> ActivityManagerWrapper.getInstance()
                 .startRecentsActivity(intent, null, listener, null, null));