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Diffstat (limited to 'tools/addon-sdk-1.4/packages/api-utils/lib/utils/registry.js')
-rw-r--r-- | tools/addon-sdk-1.4/packages/api-utils/lib/utils/registry.js | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/utils/registry.js b/tools/addon-sdk-1.4/packages/api-utils/lib/utils/registry.js new file mode 100644 index 0000000..6cd11b2 --- /dev/null +++ b/tools/addon-sdk-1.4/packages/api-utils/lib/utils/registry.js @@ -0,0 +1,90 @@ +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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) 2010 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Irakli Gozalishvili <gozala@mozilla.com> + * + * 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 { EventEmitter } = require('../events'); +const unload = require('../unload'); + +const Registry = EventEmitter.compose({ + _registry: null, + _constructor: null, + constructor: function Registry(constructor) { + this._registry = []; + this._constructor = constructor; + this.on('error', this._onError = this._onError.bind(this)); + unload.ensure(this, "_destructor"); + }, + _destructor: function _destructor() { + let _registry = this._registry.slice(0); + for each (let instance in _registry) + this._emit('remove', instance); + this._registry.splice(0); + }, + _onError: function _onError(e) { + if (!this._listeners('error').length) + console.error(e); + }, + has: function has(instance) { + let _registry = this._registry; + return ( + (0 <= _registry.indexOf(instance)) || + (instance && instance._public && 0 <= _registry.indexOf(instance._public)) + ); + }, + add: function add(instance) { + let { _constructor, _registry } = this; + if (!(instance instanceof _constructor)) + instance = new _constructor(instance); + if (0 > _registry.indexOf(instance)) { + _registry.push(instance); + this._emit('add', instance); + } + return instance; + }, + remove: function remove(instance) { + let _registry = this._registry; + let index = _registry.indexOf(instance) + if (0 <= index) { + this._emit('remove', instance); + _registry.splice(index, 1); + } + } +}); +exports.Registry = Registry; + |