[gnome-shell] messageTray: Only try to focus the summary when summoning the tray by <Super>M

[Jasper St. Pierre <jstpierre src gnome org>]

commit f72f39bc26ab8e4883cfb7fc83dd68c8839d6d44
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Oct 16 21:36:09 2013 -0400

    messageTray: Only try to focus the summary when summoning the tray by <Super>M
    
    Otherwise, when closing the tray, we'll try to focus an actor, which will
    focus the stage window, which will drop the focus from whatever window we
    already had focused.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=710347

 js/ui/messageTray.js |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index c66c9f6..f8e029c 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2212,7 +2212,10 @@ const MessageTray = new Lang.Class({
     },
 
     toggleAndNavigate: function() {
-        if (this.toggle())
+        if (!this.toggle())
+            return;
+
+        if (this._traySummoned)
             this._summary.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
     },