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";

 const { Cu } = require("chrome");

 const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});

 const { receive } = require("../event/utils");

 const { InputPort } = require("./system");

 const { object} = require("../util/sequence");

 const { getOuterId } = require("../window/utils");

 const Input = function() {};

 Input.prototype = Object.create(InputPort.prototype);

 Input.prototype.onCustomizeStart = function (window) {

   receive(this, object([getOuterId(window), true]));

 }

 Input.prototype.onCustomizeEnd = function (window) {

   receive(this, object([getOuterId(window), null]));

 }

 Input.prototype.addListener = input => CustomizableUI.addListener(input);

 Input.prototype.removeListener = input => CustomizableUI.removeListener(input);

 exports.CustomizationInput = Input;