diff --git a/toolkit/content/widgets/editor.xml b/toolkit/content/widgets/editor.xml
new file mode 100644
index 000000000000..62c724e191cf
--- /dev/null
+++ b/toolkit/content/widgets/editor.xml
@@ -0,0 +1,85 @@
+<?xml version="1.0"?>
+
+<bindings id="editorBindings"
+   xmlns="http://www.mozilla.org/xbl"
+   xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+   xmlns:xbl="http://www.mozilla.org/xbl">
+  
+  <binding id="editor">
+    <implementation type="application/x-javascript" implements="nsIAccessibleProvider">
+      <constructor>
+        <![CDATA[
+          // Make window editable immediately only
+          //   if the "editortype" attribute is supplied
+          // This allows using same contentWindow for different editortypes,
+          //   where the type is determined during the apps's window.onload handler.
+          if (this.editortype)
+            this.makeEditable(this.editortype, true);
+        ]]>
+      </constructor>
+      <destructor/>
+
+      <property name="accessible">
+        <getter>
+          <![CDATA[
+            var accService = Components.classes["@mozilla.org/accessibilityService;1"].getService(Components.interfaces.nsIAccessibilityService);
+            return accService.createOuterDocAccessible(this);
+          ]]>
+        </getter>
+      </property>
+
+      <method name="makeEditable">
+        <parameter name="editortype"/>
+        <parameter name="waitForUrlLoad"/>
+        <body>
+        <![CDATA[
+          this.editingSession.makeWindowEditable(this.contentWindow, editortype, waitForUrlLoad);
+          this.setAttribute("editortype", editortype);
+        ]]>
+        </body>
+      </method>
+      <method name="getEditor">
+        <parameter name="containingWindow"/>
+        <body>
+        <![CDATA[
+          return this.editingSession.getEditorForWindow(containingWindow);
+        ]]>
+        </body>
+      </method>
+      <method name="getHTMLEditor">
+        <parameter name="containingWindow"/>
+        <body>
+        <![CDATA[
+          var editor = this.editingSession.getEditorForWindow(containingWindow);
+          return editor.QueryInterface(Components.interfaces.nsIHTMLEditor);
+        ]]>
+        </body>
+      </method>
+      <property name="editortype"
+                onget="return this.getAttribute('editortype');"
+                onset="this.setAttribute('editortype', val); return val;"/>
+      <property name="webNavigation"
+                onget="return this.docShell.QueryInterface(Components.interfaces.nsIWebNavigation);"
+                readonly="true"/>
+      <property name="contentDocument" readonly="true"
+                onget="return this.webNavigation.document;"/>
+      <property name="docShell"
+                onget="return this.boxObject.QueryInterface(Components.interfaces.nsIEditorBoxObject).docShell;"
+                readonly="true"/>
+      <property name="contentWindow"
+                readonly="true"
+                onget="return this.docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsIDOMWindow);"/>
+      <property name="webBrowserFind"
+                readonly="true"
+                onget="return this.docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsIWebBrowserFind);"/>
+      <property name="editingSession"
+                readonly="true"
+                onget="return this.webNavigation.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsIEditingSession);"/>"
+      <property name="commandManager"
+                readonly="true"
+                onget="return this.webNavigation.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsICommandManager);"/>"
+    </implementation>
+  </binding>
+
+</bindings>
+
