Merge "Remove circular ref from MessagingLinearLayout" into rvc-dev am: f33516115a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11971391

Change-Id: Id905112a84a4d418bc87f40a6fa2171d0d5ed5a2

core/java/com/android/internal/widget/ConversationLayout.java

@@ -197,7 +197,6 @@ public class ConversationLayout extends FrameLayout
         super.onFinishInflate();
         mMessagingLinearLayout = findViewById(R.id.notification_messaging);
         mActions = findViewById(R.id.actions);
-        mMessagingLinearLayout.setMessagingLayout(this);
         mImageMessageContainer = findViewById(R.id.conversation_image_message_container);
         // We still want to clip, but only on the top, since views can temporarily out of bounds
         // during transitions.

core/java/com/android/internal/widget/MessagingLayout.java

@@ -124,7 +124,6 @@ public class MessagingLayout extends FrameLayout
     protected void onFinishInflate() {
         super.onFinishInflate();
         mMessagingLinearLayout = findViewById(R.id.notification_messaging);
-        mMessagingLinearLayout.setMessagingLayout(this);
         // We still want to clip, but only on the top, since views can temporarily out of bounds
         // during transitions.
         DisplayMetrics displayMetrics = getResources().getDisplayMetrics();

core/java/com/android/internal/widget/MessagingLinearLayout.java

@@ -24,6 +24,7 @@ import android.util.AttributeSet;
 import android.view.RemotableViewMethod;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewParent;
 import android.widget.RemoteViews;
 
 import com.android.internal.R;
@@ -43,8 +44,6 @@ public class MessagingLinearLayout extends ViewGroup {
 
     private int mMaxDisplayedLines = Integer.MAX_VALUE;
 
-    private IMessagingLayout mMessagingLayout;
-
     public MessagingLinearLayout(Context context, @Nullable AttributeSet attrs) {
         super(context, attrs);
 
@@ -292,12 +291,19 @@ public class MessagingLinearLayout extends ViewGroup {
         mMaxDisplayedLines = numberLines;
     }
 
-    public void setMessagingLayout(IMessagingLayout layout) {
-        mMessagingLayout = layout;
-    }
-
     public IMessagingLayout getMessagingLayout() {
-        return mMessagingLayout;
+        View view = this;
+        while (true) {
+            ViewParent p = view.getParent();
+            if (p instanceof View) {
+                view = (View) p;
+                if (view instanceof IMessagingLayout) {
+                    return (IMessagingLayout) view;
+                }
+            } else {
+                return null;
+            }
+        }
     }
 
     @Override