All touches to low priority headers should be accepted

Since there is no conflicting touch target, we now accept
all touches there.

Test: add low-pririty notification, click below text
Fixes: 35851799
Change-Id: Iae36fc6b950a0dbb569bfae43a5505588d9e0ace

core/java/android/app/Notification.java

@@ -4177,7 +4177,7 @@ public class Notification implements Parcelable
             }
 
             RemoteViews header = makeNotificationHeader();
-
+            header.setBoolean(R.id.notification_header, "setAcceptAllTouches", true);
             if (summary != null) {
                 mN.extras.putCharSequence(EXTRA_SUB_TEXT, summary);
             } else {

core/java/android/view/NotificationHeaderView.java

@@ -94,6 +94,7 @@ public class NotificationHeaderView extends ViewGroup {
             }
         }
     };
+    private boolean mAcceptAllTouches;
 
     public NotificationHeaderView(Context context) {
         this(context, null);
@@ -374,6 +375,8 @@ public class NotificationHeaderView extends ViewGroup {
                 case MotionEvent.ACTION_DOWN:
                     mTrackGesture = false;
                     if (isInside(x, y)) {
+                        mDownX = x;
+                        mDownY = y;
                         mTrackGesture = true;
                         return true;
                     }
@@ -396,11 +399,12 @@ public class NotificationHeaderView extends ViewGroup {
         }
 
         private boolean isInside(float x, float y) {
+            if (mAcceptAllTouches) {
+                return true;
+            }
             for (int i = 0; i < mTouchRects.size(); i++) {
                 Rect r = mTouchRects.get(i);
                 if (r.contains((int) x, (int) y)) {
-                    mDownX = x;
-                    mDownY = y;
                     return true;
                 }
             }
@@ -433,4 +437,9 @@ public class NotificationHeaderView extends ViewGroup {
         }
         return mTouchListener.isInside(x, y);
     }
+
+    @RemotableViewMethod
+    public void setAcceptAllTouches(boolean acceptAllTouches) {
+        mAcceptAllTouches = acceptAllTouches;
+    }
 }