Bug 591448 - On tab switch, 'gWindow is not defined' after closing a window that opened Panorama [r=dao a=gavin]

--HG--
extra : rebase_source : d9d049b80efac0297dd40a58e5c733cbecaf3ef3

browser/base/content/tabview/ui.js

@@ -81,6 +81,10 @@ var UIManager = {
   // Used to facilitate zooming down from a previous tab.
   _currentTab : null,
 
+  // Variable: _eventListeners
+  // Keeps track of event listeners added to the AllTabs object.
+  _eventListeners: {},
+
   // ----------
   // Function: init
   // Must be called after the object is created.
@@ -238,6 +242,7 @@ var UIManager = {
     GroupItems.uninit();
     Storage.uninit();
 
+    this._removeTabActionHandlers();
     this._currentTab = null;
     this._pageBounds = null;
     this._reorderTabItemsOnShow = null;
@@ -407,7 +412,7 @@ var UIManager = {
   _addTabActionHandlers: function() {
     var self = this;
 
-    AllTabs.register("close", function(tab) {
+    this._eventListeners.close = function(tab) {
       if (tab.ownerDocument.defaultView != gWindow)
         return;
 
@@ -438,23 +443,34 @@ var UIManager = {
           }
         }
       }
-    });
+    };
 
-    AllTabs.register("move", function(tab) {
+    this._eventListeners.move = function(tab) {
       if (tab.ownerDocument.defaultView != gWindow)
         return;
 
       let activeGroupItem = GroupItems.getActiveGroupItem();
       if (activeGroupItem)
         self.setReorderTabItemsOnShow(activeGroupItem);
-    });
+    };
 
-    AllTabs.register("select", function(tab) {
+    this._eventListeners.select = function(tab) {
       if (tab.ownerDocument.defaultView != gWindow)
         return;
 
       self.onTabSelect(tab);
-    });
+    };
+
+    for (let name in this._eventListeners)
+      AllTabs.register(name, this._eventListeners[name]);
+  },
+
+  // ----------
+  // Function: _removeTabActionHandlers
+  // Removes handlers to handle tab actions.
+  _removeTabActionHandlers: function() {
+    for (let name in this._eventListeners)
+      AllTabs.unregister(name, this._eventListeners[name]);
   },
 
   // ----------