addon-sdk/source/lib/sdk/tabs/observer.js@129ffea94266
addon-sdk/source/lib/sdk/tabs/observer.js
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
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 module.metadata = {
7 "stability": "unstable"
8 };
10 const { EventEmitterTrait: EventEmitter } = require("../deprecated/events");
11 const { DOMEventAssembler } = require("../deprecated/events/assembler");
12 const { Trait } = require("../deprecated/light-traits");
13 const { getActiveTab, getTabs, getTabContainer } = require("./utils");
14 const { browserWindowIterator } = require("../deprecated/window-utils");
15 const { isBrowser } = require('../window/utils');
16 const { observer: windowObserver } = require("../windows/observer");
18 const EVENTS = {
19 "TabOpen": "open",
20 "TabClose": "close",
21 "TabSelect": "select",
22 "TabMove": "move",
23 "TabPinned": "pinned",
24 "TabUnpinned": "unpinned"
25 };
28 // Event emitter objects used to register listeners and emit events on them
29 // when they occur.
30 const observer = Trait.compose(DOMEventAssembler, EventEmitter).create({
31 /**
32 * Method is implemented by `EventEmitter` and is used just for emitting
33 * events on registered listeners.
34 */
35 _emit: Trait.required,
36 /**
37 * Events that are supported and emitted by the module.
38 */
39 supportedEventsTypes: Object.keys(EVENTS),
40 /**
41 * Function handles all the supported events on all the windows that are
42 * observed. Method is used to proxy events to the listeners registered on
43 * this event emitter.
44 * @param {Event} event
45 * Keyboard event being emitted.
46 */
47 handleEvent: function handleEvent(event) {
48 this._emit(EVENTS[event.type], event.target, event);
49 }
50 });
52 // Currently Gecko does not dispatch any event on the previously selected
53 // tab before / after "TabSelect" is dispatched. In order to work around this
54 // limitation we keep track of selected tab and emit "deactivate" event with
55 // that before emitting "activate" on selected tab.
56 var selectedTab = null;
57 function onTabSelect(tab) {
58 if (selectedTab !== tab) {
59 if (selectedTab) observer._emit('deactivate', selectedTab);
60 if (tab) observer._emit('activate', selectedTab = tab);
61 }
62 };
63 observer.on('select', onTabSelect);
65 // We also observe opening / closing windows in order to add / remove it's
66 // containers to the observed list.
67 function onWindowOpen(chromeWindow) {
68 if (!isBrowser(chromeWindow)) return; // Ignore if it's not a browser window.
69 observer.observe(getTabContainer(chromeWindow));
70 }
71 windowObserver.on("open", onWindowOpen);
73 function onWindowClose(chromeWindow) {
74 if (!isBrowser(chromeWindow)) return; // Ignore if it's not a browser window.
75 // Bug 751546: Emit `deactivate` event on window close immediatly
76 // Otherwise we are going to face "dead object" exception on `select` event
77 if (getActiveTab(chromeWindow) == selectedTab) {
78 observer._emit("deactivate", selectedTab);
79 selectedTab = null;
80 }
81 observer.ignore(getTabContainer(chromeWindow));
82 }
83 windowObserver.on("close", onWindowClose);
86 // Currently gecko does not dispatches "TabSelect" events when different
87 // window gets activated. To work around this limitation we emulate "select"
88 // event for this case.
89 windowObserver.on("activate", function onWindowActivate(chromeWindow) {
90 if (!isBrowser(chromeWindow)) return; // Ignore if it's not a browser window.
91 observer._emit("select", getActiveTab(chromeWindow));
92 });
94 // We should synchronize state, since probably we already have at least one
95 // window open.
96 for each (let window in browserWindowIterator()) onWindowOpen(window);
98 exports.observer = observer;
