From e1b53c90c7c7f0a1cdc33713dcaeb49958ae3712 Mon Sep 17 00:00:00 2001
From: Charles Chen <charlesccchen@google.com>
Date: Fri, 29 Oct 2021 22:01:16 +0800
Subject: [PATCH] Only allow resizeable Activity to create TaskFragment

TaskFragment is usually occupied a portion of the owner Task.
Using a non-resizable Activity limits the ability to resize
Activity within TaskFragment. This CL prohibits non-resizeable
Activity to create TaskFragment.

Test: TaskFragmentOrganizerPolicyTests
Bug: 199689901
Change-Id: I10ebfc90de1b571466b048400696061df1bc0206
---
 .../com/android/server/wm/WindowOrganizerController.java    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/services/core/java/com/android/server/wm/WindowOrganizerController.java b/services/core/java/com/android/server/wm/WindowOrganizerController.java
index 6e706e9df0030..f25d065f979b1 100644
--- a/services/core/java/com/android/server/wm/WindowOrganizerController.java
+++ b/services/core/java/com/android/server/wm/WindowOrganizerController.java
@@ -1177,6 +1177,12 @@ class WindowOrganizerController extends IWindowOrganizerController.Stub
             sendTaskFragmentOperationFailure(organizer, errorCallbackToken, exception);
             return;
         }
+        if (!ownerActivity.isResizeable()) {
+            final IllegalArgumentException exception = new IllegalArgumentException("Not allowed"
+                    + " to operate with non-resizable owner Activity");
+            sendTaskFragmentOperationFailure(organizer, errorCallbackToken, exception);
+            return;
+        }
         // The ownerActivity has to belong to the same app as the root Activity of the target Task.
         final ActivityRecord rootActivity = ownerActivity.getTask().getRootActivity();
         if (rootActivity.getUid() != ownerActivity.getUid()) {