1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/addon-sdk/source/lib/sdk/util/registry.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,59 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +"use strict";
1.8 +
1.9 +module.metadata = {
1.10 + "stability": "unstable"
1.11 +};
1.12 +
1.13 +const { EventEmitter } = require('../deprecated/events');
1.14 +const unload = require('../system/unload');
1.15 +
1.16 +const Registry = EventEmitter.compose({
1.17 + _registry: null,
1.18 + _constructor: null,
1.19 + constructor: function Registry(constructor) {
1.20 + this._registry = [];
1.21 + this._constructor = constructor;
1.22 + this.on('error', this._onError = this._onError.bind(this));
1.23 + unload.ensure(this, "_destructor");
1.24 + },
1.25 + _destructor: function _destructor() {
1.26 + let _registry = this._registry.slice(0);
1.27 + for each (let instance in _registry)
1.28 + this._emit('remove', instance);
1.29 + this._registry.splice(0);
1.30 + },
1.31 + _onError: function _onError(e) {
1.32 + if (!this._listeners('error').length)
1.33 + console.error(e);
1.34 + },
1.35 + has: function has(instance) {
1.36 + let _registry = this._registry;
1.37 + return (
1.38 + (0 <= _registry.indexOf(instance)) ||
1.39 + (instance && instance._public && 0 <= _registry.indexOf(instance._public))
1.40 + );
1.41 + },
1.42 + add: function add(instance) {
1.43 + let { _constructor, _registry } = this;
1.44 + if (!(instance instanceof _constructor))
1.45 + instance = new _constructor(instance);
1.46 + if (0 > _registry.indexOf(instance)) {
1.47 + _registry.push(instance);
1.48 + this._emit('add', instance);
1.49 + }
1.50 + return instance;
1.51 + },
1.52 + remove: function remove(instance) {
1.53 + let _registry = this._registry;
1.54 + let index = _registry.indexOf(instance)
1.55 + if (0 <= index) {
1.56 + this._emit('remove', instance);
1.57 + _registry.splice(index, 1);
1.58 + }
1.59 + }
1.60 +});
1.61 +exports.Registry = Registry;
1.62 +
