The Tor Browser: toolkit/devtools/DevToolsExtensions.jsm@8bccb770b82d

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     4 "use strict";

     6 this.EXPORTED_SYMBOLS = ["gDevToolsExtensions"];

     8 Components.utils.import("resource://gre/modules/Services.jsm");

    10 let globalsCache = {};

    12 this.gDevToolsExtensions = {

    13   addContentGlobal: function(options) {

    14     if (!options || !options.global || !options['inner-window-id']) {

    15       throw Error('Invalid arguments');

    16     }

    17     let cache = getGlobalCache(options['inner-window-id']);

    18     cache.push(options.global);

    19     return undefined;

    20   },

    21   getContentGlobals: function(options) {

    22     if (!options || !options['inner-window-id']) {

    23       throw Error('Invalid arguments');

    24     }

    25     return Array.slice(globalsCache[options['inner-window-id']] || []);

    26   },

    27   removeContentGlobal: function(options) {

    28     if (!options || !options.global || !options['inner-window-id']) {

    29       throw Error('Invalid arguments');

    30     }

    31     let cache = getGlobalCache(options['inner-window-id']);

    32     let index = cache.indexOf(options.global);

    33     cache.splice(index, 1);

    34     return undefined;

    35   }

    36 };

    38 function getGlobalCache(aInnerWindowID) {

    39   return globalsCache[aInnerWindowID] = globalsCache[aInnerWindowID] || [];

    40 }

    42 // when the window is destroyed, eliminate the associated globals cache

    43 Services.obs.addObserver(function observer(subject, topic, data) {

    44   let id = subject.QueryInterface(Components.interfaces.nsISupportsPRUint64).data;

    45   delete globalsCache[id];

    46 }, 'inner-window-destroyed', false);

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