The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/windows/loader.js
addon-sdk/source/lib/sdk/windows/loader.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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deleted
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| -1:000000000000 | 0:ce0572b4ee0e |
|---|---|
| 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 module.metadata = { | |
| 7 "stability": "unstable" | |
| 8 }; | |
| 9 | |
| 10 const { Cc, Ci } = require('chrome'), | |
| 11 { setTimeout } = require('../timers'), | |
| 12 { Trait } = require('../deprecated/traits'), | |
| 13 { openDialog } = require('../window/utils'), | |
| 14 | |
| 15 ON_LOAD = 'load', | |
| 16 ON_UNLOAD = 'unload', | |
| 17 STATE_LOADED = 'complete'; | |
| 18 | |
| 19 /** | |
| 20 * Trait provides private `_window` property and requires `_onLoad` property | |
| 21 * that will be called when `_window` is loaded. If `_window` property value | |
| 22 * is changed with already loaded window `_onLoad` still will be called. | |
| 23 */ | |
| 24 const WindowLoader = Trait.compose({ | |
| 25 /** | |
| 26 * Internal listener that is called when window is loaded. | |
| 27 * Please keep in mind that this trait will not handle exceptions that may | |
| 28 * be thrown by this method so method itself should take care of | |
| 29 * handling them. | |
| 30 * @param {nsIWindow} window | |
| 31 */ | |
| 32 _onLoad: Trait.required, | |
| 33 _tabOptions: Trait.required, | |
| 34 /** | |
| 35 * Internal listener that is called when `_window`'s DOM 'unload' event | |
| 36 * is dispatched. Please note that this trait will not handle exceptions that | |
| 37 * may be thrown by this method so method itself should take care of | |
| 38 * handling them. | |
| 39 */ | |
| 40 _onUnload: Trait.required, | |
| 41 _load: function _load() { | |
| 42 if (this.__window) | |
| 43 return; | |
| 44 | |
| 45 this._window = openDialog({ | |
| 46 private: this._isPrivate, | |
| 47 args: this._tabOptions.map(function(options) options.url).join("|") | |
| 48 }); | |
| 49 }, | |
| 50 /** | |
| 51 * Private window who's load event is being tracked. Once window is loaded | |
| 52 * `_onLoad` is called. | |
| 53 * @type {nsIWindow} | |
| 54 */ | |
| 55 get _window() this.__window, | |
| 56 set _window(window) { | |
| 57 let _window = this.__window; | |
| 58 if (!window) window = null; | |
| 59 | |
| 60 if (window !== _window) { | |
| 61 if (_window) { | |
| 62 _window.removeEventListener(ON_UNLOAD, this.__unloadListener, false); | |
| 63 _window.removeEventListener(ON_LOAD, this.__loadListener, false); | |
| 64 } | |
| 65 | |
| 66 if (window) { | |
| 67 window.addEventListener( | |
| 68 ON_UNLOAD, | |
| 69 this.__unloadListener || | |
| 70 (this.__unloadListener = this._unloadListener.bind(this)) | |
| 71 , | |
| 72 false | |
| 73 ); | |
| 74 | |
| 75 this.__window = window; | |
| 76 | |
| 77 // If window is not loaded yet setting up a listener. | |
| 78 if (STATE_LOADED != window.document.readyState) { | |
| 79 window.addEventListener( | |
| 80 ON_LOAD, | |
| 81 this.__loadListener || | |
| 82 (this.__loadListener = this._loadListener.bind(this)) | |
| 83 , | |
| 84 false | |
| 85 ); | |
| 86 } | |
| 87 else { // If window is loaded calling listener next turn of event loop. | |
| 88 this._onLoad(window) | |
| 89 } | |
| 90 } | |
| 91 else { | |
| 92 this.__window = null; | |
| 93 } | |
| 94 } | |
| 95 }, | |
| 96 __window: null, | |
| 97 /** | |
| 98 * Internal method used for listening 'load' event on the `_window`. | |
| 99 * Method takes care of removing itself from 'load' event listeners once | |
| 100 * event is being handled. | |
| 101 */ | |
| 102 _loadListener: function _loadListener(event) { | |
| 103 let window = this._window; | |
| 104 if (!event.target || event.target.defaultView != window) return; | |
| 105 window.removeEventListener(ON_LOAD, this.__loadListener, false); | |
| 106 this._onLoad(window); | |
| 107 }, | |
| 108 __loadListener: null, | |
| 109 /** | |
| 110 * Internal method used for listening 'unload' event on the `_window`. | |
| 111 * Method takes care of removing itself from 'unload' event listeners once | |
| 112 * event is being handled. | |
| 113 */ | |
| 114 _unloadListener: function _unloadListener(event) { | |
| 115 let window = this._window; | |
| 116 if (!event.target | |
| 117 || event.target.defaultView != window | |
| 118 || STATE_LOADED != window.document.readyState | |
| 119 ) return; | |
| 120 window.removeEventListener(ON_UNLOAD, this.__unloadListener, false); | |
| 121 this._onUnload(window); | |
| 122 }, | |
| 123 __unloadListener: null | |
| 124 }); | |
| 125 exports.WindowLoader = WindowLoader; | |
| 126 |
