Send task description changed though task org taskInfoChanged

- This removes the need for a separate task stack listener and aligns
  with other task info change properties
- Also implement equals/hashCode for the token so we can use it in
  containers

Bug: 148977538
Test: atest TaskOrganizerTests

Signed-off-by: Winson Chung <winsonc@google.com>
Change-Id: Ie035e6389fdbdc374c1a4b4a684758efa0cb7a9e

1 files changed, 13 insertions, 5 deletions

diff --git a/core/java/android/window/VirtualDisplayTaskEmbedder.java b/core/java/android/window/VirtualDisplayTaskEmbedder.java
index 0f26d5d00f6d..70164692032f 100644
--- a/core/java/android/window/VirtualDisplayTaskEmbedder.java
+++ b/core/java/android/window/VirtualDisplayTaskEmbedder.java
@@ -67,6 +67,7 @@ public class VirtualDisplayTaskEmbedder extends TaskEmbedder {
     private VirtualDisplay mVirtualDisplay;
     private Insets mForwardedInsets;
     private DisplayMetrics mTmpDisplayMetrics;
+    private TaskStackListener mTaskStackListener;
 
     /**
      * Constructs a new TaskEmbedder.
@@ -82,11 +83,6 @@ public class VirtualDisplayTaskEmbedder extends TaskEmbedder {
         mSingleTaskInstance = singleTaskInstance;
     }
 
-    @Override
-    public TaskStackListener createTaskStackListener() {
-        return new TaskStackListenerImpl();
-    }
-
     /**
      * Whether this container has been initialized.
      *
@@ -124,6 +120,9 @@ public class VirtualDisplayTaskEmbedder extends TaskEmbedder {
                         .setDisplayToSingleTaskInstance(displayId);
             }
             setForwardedInsets(mForwardedInsets);
+
+            mTaskStackListener = new TaskStackListenerImpl();
+            mActivityTaskManager.registerTaskStackListener(mTaskStackListener);
         } catch (RemoteException e) {
             e.rethrowAsRuntimeException();
         }
@@ -142,6 +141,15 @@ public class VirtualDisplayTaskEmbedder extends TaskEmbedder {
         // Clear tap-exclude region (if any) for this window.
         clearTapExcludeRegion();
 
+        if (mTaskStackListener != null) {
+            try {
+                mActivityTaskManager.unregisterTaskStackListener(mTaskStackListener);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Failed to unregister task stack listener", e);
+            }
+            mTaskStackListener = null;
+        }
+
         if (isInitialized()) {
             mVirtualDisplay.release();
             mVirtualDisplay = null;