The Tor Browser / file revision

 /* 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/. */

 "use strict";

 module.metadata = {

   "stability": "unstable"

 };

 var { Ci } = require("chrome");

 var method = require("../../method/core");

 // Returns DOM node associated with a view for

 // the given `value`. If `value` has no view associated

 // it returns `null`. You can implement this method for

 // this type to define what the result should be for it.

 let getNodeView = method("getNodeView");

 getNodeView.define(x =>

                      x instanceof Ci.nsIDOMNode ? x :

                      x instanceof Ci.nsIDOMWindow ? x :

                      null);

 exports.getNodeView = getNodeView;

 exports.viewFor = getNodeView;

 let getActiveView = method("getActiveView");

 exports.getActiveView = getActiveView;