Fix issue in scrolling in remote compose widgets

There was special check in LauncherAppWidgetHostView to disallow intercept touch events in launcher when the widget is scrollable, the same check needs to be implemented for remote compose widget for scrolling to work properly.

Bug: 339721781
Change-Id: I8b824f293ab287a7844f93610b8b952c4aefa3dd
Test: manual
Flag: EXEMPT bugfix

src/com/android/launcher3/widget/LauncherAppWidgetHostView.java

@@ -68,6 +68,8 @@ public class LauncherAppWidgetHostView extends BaseLauncherAppWidgetHostView
 
     private static final String TRACE_METHOD_NAME = "appwidget load-widget ";
 
+    private static final Integer NO_LAYOUT_ID = Integer.valueOf(0);
+
     private final CheckLongPressHelper mLongPressHelper;
     protected final ActivityContext mActivityContext;
 
@@ -164,6 +166,21 @@ public class LauncherAppWidgetHostView extends BaseLauncherAppWidgetHostView
         return false;
     }
 
+    private boolean isTaggedAsScrollable() {
+        // TODO: Introduce new api in AppWidgetHostView to indicate whether the widget is
+        // scrollable.
+        for (int i = 0; i < this.getChildCount(); i++) {
+            View child = this.getChildAt(i);
+            final Integer layoutId = (Integer) child.getTag(android.R.id.widget_frame);
+            if (layoutId != null) {
+                // The layout id is only set to 0 when RemoteViews is created from
+                // DrawInstructions.
+                return NO_LAYOUT_ID.equals(layoutId);
+            }
+        }
+        return false;
+    }
+
     /**
      * Returns true if the application of {@link RemoteViews} through {@link #updateAppWidget} are
      * currently being deferred.
@@ -266,7 +283,7 @@ public class LauncherAppWidgetHostView extends BaseLauncherAppWidgetHostView
     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
         super.onLayout(changed, left, top, right, bottom);
-        mIsScrollable = checkScrollableRecursively(this);
+        mIsScrollable = isTaggedAsScrollable() || checkScrollableRecursively(this);
     }
 
     /**