diff -r 000000000000 -r 6474c204b198 dom/interfaces/xul/nsIDOMXULMultSelectCntrlEl.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/xul/nsIDOMXULMultSelectCntrlEl.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsIDOMXULSelectCntrlEl.idl"
+
+[scriptable, uuid(40654a10-8204-4f06-9f21-7baa31c7b1dd)]
+interface nsIDOMXULMultiSelectControlElement : nsIDOMXULSelectControlElement
+{
+  attribute DOMString selType;
+
+  attribute nsIDOMXULSelectControlItemElement currentItem;
+  attribute long currentIndex;
+
+  readonly attribute nsIDOMNodeList selectedItems;
+  
+  void addItemToSelection(in nsIDOMXULSelectControlItemElement item);
+  void removeItemFromSelection(in nsIDOMXULSelectControlItemElement item);
+  void toggleItemSelection(in nsIDOMXULSelectControlItemElement item);
+
+  void selectItem(in nsIDOMXULSelectControlItemElement item);
+  void selectItemRange(in nsIDOMXULSelectControlItemElement startItem, in nsIDOMXULSelectControlItemElement item);
+
+  void selectAll();
+  void invertSelection();
+  void clearSelection();
+
+  // XXX - temporary, pending implementation of scriptable, 
+  //       mutable nsIDOMNodeList for selectedItems
+  readonly attribute long selectedCount;
+  [binaryname(MultiGetSelectedItem)]
+  nsIDOMXULSelectControlItemElement getSelectedItem(in long index);
+};