diff options
Diffstat (limited to 'tools/addon-sdk-1.12/lib/sdk/tabs/observer.js')
-rw-r--r-- | tools/addon-sdk-1.12/lib/sdk/tabs/observer.js | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/tools/addon-sdk-1.12/lib/sdk/tabs/observer.js b/tools/addon-sdk-1.12/lib/sdk/tabs/observer.js deleted file mode 100644 index 19a048c..0000000 --- a/tools/addon-sdk-1.12/lib/sdk/tabs/observer.js +++ /dev/null @@ -1,99 +0,0 @@ -/* vim:set ts=2 sw=2 sts=2 et: */ -/* 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'; - -module.metadata = { - "stability": "unstable" -}; - -const { EventEmitterTrait: EventEmitter } = require("../deprecated/events"); -const { DOMEventAssembler } = require("../deprecated/events/assembler"); -const { Trait } = require("../deprecated/light-traits"); -const { getActiveTab, getTabs, getTabContainer } = require("./utils"); -const { browserWindowIterator } = require("../deprecated/window-utils"); -const { isBrowser } = require('../window/utils'); -const { observer: windowObserver } = require("../windows/observer"); - -const EVENTS = { - "TabOpen": "open", - "TabClose": "close", - "TabSelect": "select", - "TabMove": "move", - "TabPinned": "pinned", - "TabUnpinned": "unpinned" -}; - - -// Event emitter objects used to register listeners and emit events on them -// when they occur. -const observer = Trait.compose(DOMEventAssembler, EventEmitter).create({ - /** - * Method is implemented by `EventEmitter` and is used just for emitting - * events on registered listeners. - */ - _emit: Trait.required, - /** - * Events that are supported and emitted by the module. - */ - supportedEventsTypes: Object.keys(EVENTS), - /** - * Function handles all the supported events on all the windows that are - * observed. Method is used to proxy events to the listeners registered on - * this event emitter. - * @param {Event} event - * Keyboard event being emitted. - */ - handleEvent: function handleEvent(event) { - this._emit(EVENTS[event.type], event.target, event); - } -}); - -// Currently Gecko does not dispatch any event on the previously selected -// tab before / after "TabSelect" is dispatched. In order to work around this -// limitation we keep track of selected tab and emit "deactivate" event with -// that before emitting "activate" on selected tab. -var selectedTab = null; -function onTabSelect(tab) { - if (selectedTab !== tab) { - if (selectedTab) observer._emit('deactivate', selectedTab); - if (tab) observer._emit('activate', selectedTab = tab); - } -}; -observer.on('select', onTabSelect); - -// We also observe opening / closing windows in order to add / remove it's -// containers to the observed list. -function onWindowOpen(chromeWindow) { - if (!isBrowser(chromeWindow)) return; // Ignore if it's not a browser window. - observer.observe(getTabContainer(chromeWindow)); -} -windowObserver.on("open", onWindowOpen); - -function onWindowClose(chromeWindow) { - if (!isBrowser(chromeWindow)) return; // Ignore if it's not a browser window. - // Bug 751546: Emit `deactivate` event on window close immediatly - // Otherwise we are going to face "dead object" exception on `select` event - if (getActiveTab(chromeWindow) == selectedTab) { - observer._emit("deactivate", selectedTab); - selectedTab = null; - } - observer.ignore(getTabContainer(chromeWindow)); -} -windowObserver.on("close", onWindowClose); - - -// Currently gecko does not dispatches "TabSelect" events when different -// window gets activated. To work around this limitation we emulate "select" -// event for this case. -windowObserver.on("activate", function onWindowActivate(chromeWindow) { - if (!isBrowser(chromeWindow)) return; // Ignore if it's not a browser window. - observer._emit("select", getActiveTab(chromeWindow)); -}); - -// We should synchronize state, since probably we already have at least one -// window open. -for each (let window in browserWindowIterator()) onWindowOpen(window); - -exports.observer = observer; |