diff -r 000000000000 -r 6474c204b198 dom/interfaces/xul/nsIDOMXULButtonElement.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/xul/nsIDOMXULButtonElement.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+/* -*- 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 "nsIDOMXULLabeledControlEl.idl"
+
+[scriptable, uuid(d56f1f8f-fc4e-4650-9a85-25108bbd1980)]
+interface nsIDOMXULButtonElement : nsIDOMXULLabeledControlElement {
+  const short CHECKSTATE_UNCHECKED = 0;
+  const short CHECKSTATE_CHECKED = 1;
+  const short CHECKSTATE_MIXED = 2;
+
+  attribute DOMString type;
+  attribute DOMString dlgType;
+
+  // For buttons of type="menu" only.
+  attribute boolean open;
+  
+  // For buttons of type="checkbox" only.
+  attribute boolean checked;
+  attribute long checkState;
+  attribute boolean autoCheck;
+
+  // For buttons of type="radio" only.
+  attribute DOMString group;
+};
+