Allow system organizer to force translucent on TaskFragment

Bug: 284050041
Test: atest WindowOrganizerTests
Change-Id: I3ea2672d0ac78364f3c2e01aaf22ab6440068557
diff --git a/services/core/java/com/android/server/wm/Task.java b/services/core/java/com/android/server/wm/Task.java
index 1d5d279..70d9a04 100644
--- a/services/core/java/com/android/server/wm/Task.java
+++ b/services/core/java/com/android/server/wm/Task.java
@@ -489,8 +489,6 @@
 
     private boolean mForceShowForAllUsers;
 
-    private boolean mForceTranslucent = false;
-
     // The display category name for this task.
     String mRequiredDisplayCategory;
 
@@ -4512,10 +4510,6 @@
         return true;
     }
 
-    void setForceTranslucent(boolean set) {
-        mForceTranslucent = set;
-    }
-
     @Override
     public boolean isAlwaysOnTop() {
         return !isForceHidden() && super.isAlwaysOnTop();
@@ -4533,11 +4527,6 @@
     }
 
     @Override
-    protected boolean isForceTranslucent() {
-        return mForceTranslucent;
-    }
-
-    @Override
     long getProtoFieldId() {
         return TASK;
     }
diff --git a/services/core/java/com/android/server/wm/TaskFragment.java b/services/core/java/com/android/server/wm/TaskFragment.java
index 906b3b5..87d6fd9 100644
--- a/services/core/java/com/android/server/wm/TaskFragment.java
+++ b/services/core/java/com/android/server/wm/TaskFragment.java
@@ -375,6 +375,8 @@
     @interface FlagForceHidden {}
     protected int mForceHiddenFlags = 0;
 
+    private boolean mForceTranslucent = false;
+
     final Point mLastSurfaceSize = new Point();
 
     private final Rect mTmpBounds = new Rect();
@@ -879,8 +881,12 @@
         return true;
     }
 
-    protected boolean isForceTranslucent() {
-        return false;
+    boolean isForceTranslucent() {
+        return mForceTranslucent;
+    }
+
+    void setForceTranslucent(boolean set) {
+        mForceTranslucent = set;
     }
 
     boolean isLeafTaskFragment() {
diff --git a/services/core/java/com/android/server/wm/WindowOrganizerController.java b/services/core/java/com/android/server/wm/WindowOrganizerController.java
index 5ed6caf..0a733f6 100644
--- a/services/core/java/com/android/server/wm/WindowOrganizerController.java
+++ b/services/core/java/com/android/server/wm/WindowOrganizerController.java
@@ -37,6 +37,7 @@
 import static android.window.TaskFragmentOperation.OP_TYPE_START_ACTIVITY_IN_TASK_FRAGMENT;
 import static android.window.TaskFragmentOperation.OP_TYPE_UNKNOWN;
 import static android.window.WindowContainerTransaction.Change.CHANGE_FOCUSABLE;
+import static android.window.WindowContainerTransaction.Change.CHANGE_FORCE_TRANSLUCENT;
 import static android.window.WindowContainerTransaction.Change.CHANGE_HIDDEN;
 import static android.window.WindowContainerTransaction.Change.CHANGE_RELATIVE_BOUNDS;
 import static android.window.WindowContainerTransaction.HierarchyOp.HIERARCHY_OP_TYPE_ADD_INSETS_FRAME_PROVIDER;
@@ -746,8 +747,7 @@
             }
         }
 
-        if ((c.getChangeMask()
-                & WindowContainerTransaction.Change.CHANGE_FORCE_TRANSLUCENT) != 0) {
+        if ((c.getChangeMask() & CHANGE_FORCE_TRANSLUCENT) != 0) {
             tr.setForceTranslucent(c.getForceTranslucent());
             effects = TRANSACT_EFFECTS_LIFECYCLE;
         }
@@ -855,6 +855,11 @@
                 effects |= TRANSACT_EFFECTS_LIFECYCLE;
             }
         }
+        if ((c.getChangeMask() & CHANGE_FORCE_TRANSLUCENT) != 0) {
+            taskFragment.setForceTranslucent(c.getForceTranslucent());
+            effects = TRANSACT_EFFECTS_LIFECYCLE;
+        }
+
         effects |= applyChanges(taskFragment, c);
 
         if (taskFragment.shouldStartChangeTransition(mTmpBounds0, mTmpBounds1)) {
@@ -1996,9 +2001,11 @@
 
         if (mTaskFragmentOrganizerController.isSystemOrganizer(organizer.asBinder())) {
             // System organizer is allowed to update the hidden and focusable state.
-            // We unset the CHANGE_HIDDEN and CHANGE_FOCUSABLE bits because they are checked here.
+            // We unset the CHANGE_HIDDEN, CHANGE_FOCUSABLE, and CHANGE_FORCE_TRANSLUCENT bits
+            // because they are checked here.
             changeMaskToBeChecked &= ~CHANGE_HIDDEN;
             changeMaskToBeChecked &= ~CHANGE_FOCUSABLE;
+            changeMaskToBeChecked &= ~CHANGE_FORCE_TRANSLUCENT;
         }
 
         // setRelativeBounds is allowed.
diff --git a/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java b/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java
index 0b77fd8..fe56240 100644
--- a/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java
@@ -101,6 +101,7 @@
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
+import java.util.function.BiConsumer;
 
 /**
  * Test class for {@link ITaskOrganizer} and {@link android.window.ITaskOrganizerController}.
@@ -583,7 +584,7 @@
     }
 
     @Test
-    public void testTaskFragmentHiddenAndFocusableChanges() {
+    public void testTaskFragmentHiddenFocusableTranslucentChanges() {
         removeGlobalMinSizeRestriction();
         final Task rootTask = new TaskBuilder(mSupervisor).setCreateActivity(true)
                 .setWindowingMode(WINDOWING_MODE_FULLSCREEN).build();
@@ -605,10 +606,12 @@
         assertTrue(taskFragment.shouldBeVisible(null));
         assertTrue(taskFragment.isFocusable());
         assertTrue(taskFragment.isTopActivityFocusable());
+        assertFalse(taskFragment.isForceTranslucent());
 
         // Apply transaction to the TaskFragment hidden and not focusable.
         t.setHidden(taskFragment.mRemoteToken.toWindowContainerToken(), true);
         t.setFocusable(taskFragment.mRemoteToken.toWindowContainerToken(), false);
+        t.setForceTranslucent(taskFragment.mRemoteToken.toWindowContainerToken(), true);
         mWm.mAtmService.mWindowOrganizerController.applyTaskFragmentTransactionLocked(
                 t, TaskFragmentOrganizer.TASK_FRAGMENT_TRANSIT_CHANGE,
                 false /* shouldApplyIndependently */);
@@ -617,10 +620,12 @@
         assertFalse(taskFragment.shouldBeVisible(null));
         assertFalse(taskFragment.isFocusable());
         assertFalse(taskFragment.isTopActivityFocusable());
+        assertTrue(taskFragment.isForceTranslucent());
 
         // Apply transaction to the TaskFragment not hidden and focusable.
         t.setHidden(taskFragment.mRemoteToken.toWindowContainerToken(), false);
         t.setFocusable(taskFragment.mRemoteToken.toWindowContainerToken(), true);
+        t.setForceTranslucent(taskFragment.mRemoteToken.toWindowContainerToken(), false);
         mWm.mAtmService.mWindowOrganizerController.applyTaskFragmentTransactionLocked(
                 t, TaskFragmentOrganizer.TASK_FRAGMENT_TRANSIT_CHANGE,
                 false /* shouldApplyIndependently */);
@@ -629,10 +634,32 @@
         assertTrue(taskFragment.shouldBeVisible(null));
         assertTrue(taskFragment.isFocusable());
         assertTrue(taskFragment.isTopActivityFocusable());
+        assertFalse(taskFragment.isForceTranslucent());
     }
 
     @Test
-    public void testTaskFragmentHiddenAndFocusableChanges_throwsWhenNotSystemOrganizer() {
+    public void testTaskFragmentChangeHidden_throwsWhenNotSystemOrganizer() {
+        // Non-system organizers are not allow to update the hidden state.
+        testTaskFragmentChangesWithoutSystemOrganizerThrowException(
+                (t, windowContainerToken) -> t.setHidden(windowContainerToken, true));
+    }
+
+    @Test
+    public void testTaskFragmentChangeFocusable_throwsWhenNotSystemOrganizer() {
+        // Non-system organizers are not allow to update the focusable state.
+        testTaskFragmentChangesWithoutSystemOrganizerThrowException(
+                (t, windowContainerToken) -> t.setFocusable(windowContainerToken, false));
+    }
+
+    @Test
+    public void testTaskFragmentChangeTranslucent_throwsWhenNotSystemOrganizer() {
+        // Non-system organizers are not allow to update the translucent state.
+        testTaskFragmentChangesWithoutSystemOrganizerThrowException(
+                (t, windowContainerToken) -> t.setForceTranslucent(windowContainerToken, true));
+    }
+
+    private void testTaskFragmentChangesWithoutSystemOrganizerThrowException(
+            BiConsumer<WindowContainerTransaction, WindowContainerToken> addOp) {
         removeGlobalMinSizeRestriction();
         final Task rootTask = new TaskBuilder(mSupervisor).setCreateActivity(true)
                 .setWindowingMode(WINDOWING_MODE_FULLSCREEN).build();
@@ -641,21 +668,15 @@
         final TaskFragmentOrganizer organizer =
                 createTaskFragmentOrganizer(t, false /* isSystemOrganizer */);
 
-        final IBinder token = new Binder();
         final TaskFragment taskFragment = new TaskFragmentBuilder(mAtm)
                 .setParentTask(rootTask)
-                .setFragmentToken(token)
+                .setFragmentToken(new Binder())
                 .setOrganizer(organizer)
                 .createActivityCount(1)
                 .build();
 
-        assertTrue(rootTask.shouldBeVisible(null));
-        assertTrue(taskFragment.shouldBeVisible(null));
+        addOp.accept(t, taskFragment.mRemoteToken.toWindowContainerToken());
 
-        t.setHidden(taskFragment.mRemoteToken.toWindowContainerToken(), true);
-        t.setFocusable(taskFragment.mRemoteToken.toWindowContainerToken(), false);
-
-        // Non-system organizers are not allow to update the hidden and focusable states.
         assertThrows(SecurityException.class, () ->
                 mWm.mAtmService.mWindowOrganizerController.applyTaskFragmentTransactionLocked(
                         t, TaskFragmentOrganizer.TASK_FRAGMENT_TRANSIT_CHANGE,