am 4b81e89d: am 2fd3cb95: Merge "Fix ActivityContainer callback parcelling." into klp-modular-dev

* commit '4b81e89d9b7a2cf3ed5aacd9c647aed47f4c4675':
  Fix ActivityContainer callback parcelling.
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index 9f1b56e..44c74d8 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -2029,7 +2029,7 @@
             data.enforceInterface(IActivityManager.descriptor);
             IBinder parentActivityToken = data.readStrongBinder();
             IActivityContainerCallback callback =
-                    (IActivityContainerCallback) data.readStrongBinder();
+                    IActivityContainerCallback.Stub.asInterface(data.readStrongBinder());
             IActivityContainer activityContainer =
                     createActivityContainer(parentActivityToken, callback);
             reply.writeNoException();
@@ -4744,7 +4744,7 @@
         Parcel reply = Parcel.obtain();
         data.writeInterfaceToken(IActivityManager.descriptor);
         data.writeStrongBinder(parentActivityToken);
-        data.writeStrongBinder((IBinder)callback);
+        data.writeStrongBinder(callback == null ? null : callback.asBinder());
         mRemote.transact(CREATE_ACTIVITY_CONTAINER_TRANSACTION, data, reply, 0);
         reply.readException();
         final int result = reply.readInt();
diff --git a/core/java/android/app/ActivityView.java b/core/java/android/app/ActivityView.java
index 113f123..51cb12a 100644
--- a/core/java/android/app/ActivityView.java
+++ b/core/java/android/app/ActivityView.java
@@ -92,8 +92,8 @@
         super.onAttachedToWindow();
         try {
             final IBinder token = mActivity.getActivityToken();
-            mActivityContainer =
-                    ActivityManagerNative.getDefault().createActivityContainer(token, null);
+            mActivityContainer = ActivityManagerNative.getDefault().createActivityContainer(token,
+                      new ActivityContainerCallback());
         } catch (RemoteException e) {
             throw new IllegalStateException("ActivityView: Unable to create ActivityContainer. "
                     + e);
@@ -282,4 +282,14 @@
         }
 
     }
+
+    private class ActivityContainerCallback extends IActivityContainerCallback.Stub {
+        @Override
+        public void setVisible(IBinder container, boolean visible) {
+            if (DEBUG) Log.v(TAG, "setVisible(): container=" + container + " visible=" + visible);
+            if (visible) {
+            } else {
+            }
+        }
+    }
 }
diff --git a/core/java/android/app/IActivityContainerCallback.aidl b/core/java/android/app/IActivityContainerCallback.aidl
index 55c2001..7f6d2c3 100644
--- a/core/java/android/app/IActivityContainerCallback.aidl
+++ b/core/java/android/app/IActivityContainerCallback.aidl
@@ -20,5 +20,5 @@
 
 /** @hide */
 interface IActivityContainerCallback {
-    oneway void onLastActivityRemoved(IBinder container);
+    oneway void setVisible(IBinder container, boolean visible);
 }
diff --git a/services/core/java/com/android/server/am/ActivityStack.java b/services/core/java/com/android/server/am/ActivityStack.java
index b894724..8dd4317 100755
--- a/services/core/java/com/android/server/am/ActivityStack.java
+++ b/services/core/java/com/android/server/am/ActivityStack.java
@@ -1063,6 +1063,16 @@
         return mStackSupervisor.isFrontStack(this);
     }
 
+    private void setVisibile(ActivityRecord r, boolean visible) {
+        r.visible = visible;
+        mWindowManager.setAppVisibility(r.appToken, visible);
+        final ArrayList<ActivityStack> containers = r.mChildContainers;
+        for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) {
+            ActivityContainer container = containers.get(containerNdx).mActivityContainer;
+            container.setVisible(visible);
+        }
+    }
+
     /**
      * Version of ensureActivitiesVisible that can easily be called anywhere.
      */
@@ -1141,8 +1151,7 @@
                             if (!r.visible) {
                                 if (DEBUG_VISBILITY) Slog.v(
                                         TAG, "Starting and making visible: " + r);
-                                r.visible = true;
-                                mWindowManager.setAppVisibility(r.appToken, true);
+                                setVisibile(r, true);
                             }
                             if (r != starting) {
                                 mStackSupervisor.startSpecificActivityLocked(r, false, false);
@@ -1168,7 +1177,7 @@
                                 if (mTranslucentActivityWaiting != null) {
                                     mUndrawnActivitiesBelowTopTranslucent.add(r);
                                 }
-                                mWindowManager.setAppVisibility(r.appToken, true);
+                                setVisibile(r, true);
                                 r.sleeping = false;
                                 r.app.pendingUiClean = true;
                                 r.app.thread.scheduleWindowVisibility(r.appToken, true);
@@ -1204,9 +1213,8 @@
                     // sure they no longer are keeping the screen frozen.
                     if (r.visible) {
                         if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r);
-                        r.visible = false;
                         try {
-                            mWindowManager.setAppVisibility(r.appToken, false);
+                            setVisibile(r, false);
                             switch (r.state) {
                                 case STOPPING:
                                 case STOPPED:
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 47b4d0a..63f9d09 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -127,6 +127,7 @@
     static final int HANDLE_DISPLAY_ADDED = FIRST_SUPERVISOR_STACK_MSG + 5;
     static final int HANDLE_DISPLAY_CHANGED = FIRST_SUPERVISOR_STACK_MSG + 6;
     static final int HANDLE_DISPLAY_REMOVED = FIRST_SUPERVISOR_STACK_MSG + 7;
+    static final int CONTAINER_CALLBACK_VISIBILITY = FIRST_SUPERVISOR_STACK_MSG + 8;
 
     private final static String VIRTUAL_DISPLAY_BASE_NAME = "ActivityViewVirtualDisplay";
 
@@ -3015,6 +3016,14 @@
                 case HANDLE_DISPLAY_REMOVED: {
                     handleDisplayRemovedLocked(msg.arg1);
                 } break;
+                case CONTAINER_CALLBACK_VISIBILITY: {
+                    final ActivityContainer container = (ActivityContainer) msg.obj;
+                    try {
+                        // We only send this message if mCallback is non-null.
+                        container.mCallback.setVisible(container.asBinder(), msg.arg1 == 1);
+                    } catch (RemoteException e) {
+                    }
+                }
             }
         }
     }
@@ -3026,6 +3035,8 @@
         final ActivityRecord mParentActivity;
         final String mIdString;
 
+        boolean mVisible = true;
+
         /** Display this ActivityStack is currently on. Null if not attached to a Display. */
         ActivityDisplay mActivityDisplay;
 
@@ -3173,6 +3184,16 @@
             }
         }
 
+        void setVisible(boolean visible) {
+            if (mVisible != visible) {
+                mVisible = visible;
+                if (mCallback != null) {
+                    mHandler.obtainMessage(CONTAINER_CALLBACK_VISIBILITY, visible ? 1 : 0,
+                            0 /* unused */, this).sendToTarget();
+                }
+            }
+        }
+
         @Override
         public String toString() {
             return mIdString + (mActivityDisplay == null ? "N" : "A");