panel: Don't try to begin a grab op while something else has taken a grab

https://bugzilla.gnome.org/show_bug.cgi?id=694241

diff --git a/js/ui/panel.js b/js/ui/panel.js
index 7153abdff753217c2494582e896c9c657fbee5e6..f24f3a402e9e7dc1dcef233c9c7022d3ae0c3d36 100644 (file)
--- a/js/ui/panel.js
+++ b/js/ui/panel.js
@@ -1065,6 +1065,9 @@ const Panel = new Lang.Class({
     },
 
     _onButtonPress: function(actor, event) {
+        if (Main.modalCount > 0)
+            return false;
+
         if (event.get_source() != actor)
             return false;