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Diffstat (limited to 'tools/addon-sdk-1.4/packages/api-utils/lib/keyboard/observer.js')
-rw-r--r-- | tools/addon-sdk-1.4/packages/api-utils/lib/keyboard/observer.js | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/keyboard/observer.js b/tools/addon-sdk-1.4/packages/api-utils/lib/keyboard/observer.js new file mode 100644 index 0000000..6968551 --- /dev/null +++ b/tools/addon-sdk-1.4/packages/api-utils/lib/keyboard/observer.js @@ -0,0 +1,86 @@ +/* vim:set ts=2 sw=2 sts=2 et: */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Jetpack. + * + * The Initial Developer of the Original Code is + * the Mozilla Foundation. + * Portions created by the Initial Developer are Copyright (C) 2011 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Irakli Gozalishvili <gozala@mozilla.com> (Original Author) + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +"use strict"; + +const { Trait } = require("../light-traits"); +const { EventEmitterTrait: EventEmitter } = require("../events"); +const { DOMEventAssembler } = require("../events/assembler"); +const { browserWindowIterator, isBrowser } = require('../window-utils'); +const { observer: windowObserver } = require("../windows/observer"); + +// 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: [ "keydown", "keyup", "keypress" ], + /** + * 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(event.type, event, event.target.ownerDocument.defaultView); + } +}); + +// Adding each opened window to a list of observed windows. +windowObserver.on("open", function onOpen(window) { + if (isBrowser(window)) + observer.observe(window); +}); +// Removing each closed window form the list of observed windows. +windowObserver.on("close", function onClose(window) { + if (isBrowser(window)) + observer.ignore(window); +}); + +// Making observer aware of already opened windows. +for each (let window in browserWindowIterator()) + observer.observe(window); + +exports.observer = observer; |