Start listening on notifications/QS panels on expansion started

Now that there are QS tiles in the header, they need to be in the
listening state as soon as the expansion starts so they can be
up to date by the time the user sees them.

Change-Id: I80550d2885bd86afce3ea1595d441e65298d4d7c
Fixes: 30041004

packages/SystemUI/src/com/android/systemui/qs/QSContainer.java

@@ -235,6 +235,10 @@ public class QSContainer extends FrameLayout {
         mQSPanel.setListening(mListening && mQsExpanded);
     }
 
+    public void setHeaderListening(boolean listening) {
+        mHeader.setListening(listening);
+    }
+
     public void setQsExpansion(float expansion, float headerTranslation) {
         if (DEBUG) Log.d(TAG, "setQSExpansion " + expansion + " " + headerTranslation);
         mQsExpansion = expansion;

packages/SystemUI/src/com/android/systemui/qs/QSPanel.java

@@ -245,10 +245,12 @@ public class QSPanel extends LinearLayout implements Tunable, Callback {
         if (mListening) {
             refreshAllTiles();
         }
-        if (listening) {
-            mBrightnessController.registerCallbacks();
-        } else {
-            mBrightnessController.unregisterCallbacks();
+        if (mBrightnessView.getVisibility() == View.VISIBLE) {
+            if (listening) {
+                mBrightnessController.registerCallbacks();
+            } else {
+                mBrightnessController.unregisterCallbacks();
+            }
         }
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java

@@ -1612,6 +1612,9 @@ public class NotificationPanelView extends PanelView implements
         if (mQsExpanded) {
             onQsExpansionStarted();
         }
+        // Since there are QS tiles in the header now, we need to make sure we start listening
+        // immediately so they can be up to date.
+        mQsContainer.setHeaderListening(true);
     }
 
     @Override