|
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"; |
|
5 |
|
6 this.EXPORTED_SYMBOLS = ["gDevToolsExtensions"]; |
|
7 |
|
8 Components.utils.import("resource://gre/modules/Services.jsm"); |
|
9 |
|
10 let globalsCache = {}; |
|
11 |
|
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 }; |
|
37 |
|
38 function getGlobalCache(aInnerWindowID) { |
|
39 return globalsCache[aInnerWindowID] = globalsCache[aInnerWindowID] || []; |
|
40 } |
|
41 |
|
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); |