Merge "Send Task Fragment Info Update When Task Invisible..." into sc-v2-dev am: 785ee1a55c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16639421

Change-Id: Ia509c7c72338abd5028c2c8db6d572f642a637e4

services/core/java/com/android/server/wm/TaskFragmentOrganizerController.java

@@ -22,6 +22,7 @@ import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_WINDOW_ORGANI
 import static com.android.server.wm.WindowOrganizerController.configurationsAreEqualForOrganizer;
 
 import android.annotation.IntDef;
+import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.res.Configuration;
 import android.graphics.Rect;
@@ -497,6 +498,23 @@ public class TaskFragmentOrganizerController extends ITaskFragmentOrganizerContr
         return null;
     }
 
+    private boolean shouldSendEventWhenTaskInvisible(@NonNull Task task,
+            @NonNull PendingTaskFragmentEvent event) {
+        final TaskFragmentOrganizerState state =
+                mTaskFragmentOrganizerState.get(event.mTaskFragmentOrg.asBinder());
+        final TaskFragmentInfo lastInfo = state.mLastSentTaskFragmentInfos.get(event.mTaskFragment);
+        final TaskFragmentInfo info = event.mTaskFragment.getTaskFragmentInfo();
+        // Send an info changed callback if this event is for the last activities to finish in a
+        // Task so that the {@link TaskFragmentOrganizer} can delete this TaskFragment. Otherwise,
+        // the Task may be removed before it becomes visible again to send this event because it no
+        // longer has activities. As a result, the organizer will never get this info changed event
+        // and will not delete the TaskFragment because the organizer thinks the TaskFragment still
+        // has running activities.
+        return event.mEventType == PendingTaskFragmentEvent.EVENT_INFO_CHANGED
+                && task.topRunningActivity() == null && lastInfo != null
+                && lastInfo.getRunningActivityCount() > 0 && info.getRunningActivityCount() == 0;
+    }
+
     void dispatchPendingEvents() {
         if (mAtmService.mWindowManager.mWindowPlacerLocked.isLayoutDeferred()
                 || mPendingTaskFragmentEvents.isEmpty()) {
@@ -510,7 +528,8 @@ public class TaskFragmentOrganizerController extends ITaskFragmentOrganizerContr
             final PendingTaskFragmentEvent event = mPendingTaskFragmentEvents.get(i);
             final Task task = event.mTaskFragment != null ? event.mTaskFragment.getTask() : null;
             if (task != null && (task.lastActiveTime <= event.mDeferTime
-                    || !isTaskVisible(task, visibleTasks, invisibleTasks))) {
+                    || !(isTaskVisible(task, visibleTasks, invisibleTasks)
+                    || shouldSendEventWhenTaskInvisible(task, event)))) {
                 // Defer sending events to the TaskFragment until the host task is active again.
                 event.mDeferTime = task.lastActiveTime;
                 continue;

services/tests/wmtests/src/com/android/server/wm/TaskFragmentOrganizerControllerTest.java

@@ -21,14 +21,17 @@ import static com.android.dx.mockito.inline.extended.ExtendedMockito.spyOn;
 import static com.android.server.wm.testing.Assert.assertThrows;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.clearInvocations;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.verify;
 
 import android.content.Intent;
@@ -471,6 +474,7 @@ public class TaskFragmentOrganizerControllerTest extends WindowTestsBase {
         final TaskFragment taskFragment = new TaskFragmentBuilder(mAtm)
                 .setParentTask(task)
                 .setOrganizer(mOrganizer)
+                .setFragmentToken(mFragmentToken)
                 .build();
 
         // Mock the task to invisible
@@ -485,4 +489,38 @@ public class TaskFragmentOrganizerControllerTest extends WindowTestsBase {
         // Verifies that event was not sent
         verify(mOrganizer, never()).onTaskFragmentInfoChanged(any());
     }
+
+    /**
+     * Tests that a task fragment info changed event is still sent if the task is invisible only
+     * when the info changed event is because of the last activity in a task finishing.
+     */
+    @Test
+    public void testLastPendingTaskFragmentInfoChangedEventOfInvisibleTaskSent() {
+        // Create a TaskFragment with an activity, all within a parent task
+        final TaskFragment taskFragment = new TaskFragmentBuilder(mAtm)
+                .setOrganizer(mOrganizer)
+                .setFragmentToken(mFragmentToken)
+                .setCreateParentTask()
+                .createActivityCount(1)
+                .build();
+        final Task parentTask = taskFragment.getTask();
+        final ActivityRecord activity = taskFragment.getTopNonFinishingActivity();
+        assertTrue(parentTask.shouldBeVisible(null));
+
+        // Dispatch pending info changed event from creating the activity
+        mController.registerOrganizer(mIOrganizer);
+        taskFragment.mTaskFragmentAppearedSent = true;
+        mController.onTaskFragmentInfoChanged(mIOrganizer, taskFragment);
+        mController.dispatchPendingEvents();
+
+        // Finish the activity and verify that the task is invisible
+        activity.finishing = true;
+        assertFalse(parentTask.shouldBeVisible(null));
+
+        // Verify the info changed callback still occurred despite the task being invisible
+        reset(mOrganizer);
+        mController.onTaskFragmentInfoChanged(mIOrganizer, taskFragment);
+        mController.dispatchPendingEvents();
+        verify(mOrganizer).onTaskFragmentInfoChanged(any());
+    }
 }