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/* -*- 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;
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