Clicks on the notification group header now collapse

Previously clicks would open the app and have a very
weird transition. We're now collapsing the notification
instead and never allowing expanded groups to be launched

Change-Id: I4ba4e5f695a8b210dd76a38db2783484b90a4f33
Fixes: 110093221
Test: add group, click on header after expanded, observe collapsing

packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationEntryManager.java

@@ -182,6 +182,10 @@ public class NotificationEntryManager implements Dumpable, NotificationInflater.
             } else if (row.isChildInGroup() && isMenuVisible(row.getNotificationParent())) {
                 row.getNotificationParent().animateTranslateNotification(0);
                 return;
+            } else if (row.isSummaryWithChildren() && row.areChildrenExpanded()) {
+                // We never want to open the app directly if the user clicks in between
+                // the notifications.
+                return;
             }
 
             // Mark notification for one frame.

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationChildrenContainer.java

@@ -875,6 +875,7 @@ public class NotificationChildrenContainer extends ViewGroup {
             ExpandableNotificationRow child = mChildren.get(childIdx);
             child.setChildrenExpanded(childrenExpanded, false);
         }
+        updateHeaderTouchability();
     }
 
     public void setContainingNotification(ExpandableNotificationRow parent) {
@@ -1215,6 +1216,13 @@ public class NotificationChildrenContainer extends ViewGroup {
             ExpandableNotificationRow child = mChildren.get(i);
             child.setUserLocked(userLocked && !showingAsLowPriority());
         }
+        updateHeaderTouchability();
+    }
+
+    private void updateHeaderTouchability() {
+        if (mNotificationHeader != null) {
+            mNotificationHeader.setAcceptAllTouches(mChildrenExpanded || mUserLocked);
+        }
     }
 
     public void onNotificationUpdated() {