[gnome-shell] messageTray: Check if the clicked summary item has a right click menu

[Rui Matos <rtcm src gnome org>]

commit 51bca083864f5bc88ed6221e6f3e49ceaede24ad
Author: Rui Matos <tiagomatos gmail com>
Date:   Fri May 24 20:59:40 2013 +0200

    messageTray: Check if the clicked summary item has a right click menu
    
    Commit e71129aa6879b62a04d2fc3b43ff25edd6611987 introduced the
    possibility of having summary items without a right click menu so we
    should check for one before trying to show it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700190

 js/ui/messageTray.js |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index b17053b..efba34b 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2241,10 +2241,15 @@ const MessageTray = new Lang.Class({
         let canShowSummaryBoxPointer = this._trayState == State.SHOWN;
         // We only have sources with empty notification stacks for legacy tray icons. Currently, we never 
attempt
         // to show notifications for legacy tray icons, but this would be necessary if we did.
-        let requestedNotificationStackIsEmpty = (this._clickedSummaryItemMouseButton == 1 && 
this._clickedSummaryItem.source.notifications.length == 0);
-        let wrongSummaryNotificationStack = (this._clickedSummaryItemMouseButton == 1 &&
+        let requestedNotificationStackIsEmpty = (haveClickedSummaryItem &&
+                                                 this._clickedSummaryItemMouseButton == 1 &&
+                                                 this._clickedSummaryItem.source.notifications.length == 0);
+        let wrongSummaryNotificationStack = (haveClickedSummaryItem &&
+                                             this._clickedSummaryItemMouseButton == 1 &&
                                              this._summaryBoxPointer.bin.child != 
this._clickedSummaryItem.notificationStackWidget);
-        let wrongSummaryRightClickMenu = (this._clickedSummaryItemMouseButton == 3 &&
+        let wrongSummaryRightClickMenu = (haveClickedSummaryItem &&
+                                          this._clickedSummaryItemMouseButton == 3 &&
+                                          this._clickedSummaryItem.rightClickMenu != null &&
                                           this._summaryBoxPointer.bin.child != 
this._clickedSummaryItem.rightClickMenu);
         let wrongSummaryBoxPointer = (haveClickedSummaryItem &&
                                       (wrongSummaryNotificationStack || wrongSummaryRightClickMenu));