addon-sdk/source/lib/sdk/util/registry.js@6474c204b198
addon-sdk/source/lib/sdk/util/registry.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4 "use strict";
6 module.metadata = {
7 "stability": "unstable"
8 };
10 const { EventEmitter } = require('../deprecated/events');
11 const unload = require('../system/unload');
13 const Registry = EventEmitter.compose({
14 _registry: null,
15 _constructor: null,
16 constructor: function Registry(constructor) {
17 this._registry = [];
18 this._constructor = constructor;
19 this.on('error', this._onError = this._onError.bind(this));
20 unload.ensure(this, "_destructor");
21 },
22 _destructor: function _destructor() {
23 let _registry = this._registry.slice(0);
24 for each (let instance in _registry)
25 this._emit('remove', instance);
26 this._registry.splice(0);
27 },
28 _onError: function _onError(e) {
29 if (!this._listeners('error').length)
30 console.error(e);
31 },
32 has: function has(instance) {
33 let _registry = this._registry;
34 return (
35 (0 <= _registry.indexOf(instance)) ||
36 (instance && instance._public && 0 <= _registry.indexOf(instance._public))
37 );
38 },
39 add: function add(instance) {
40 let { _constructor, _registry } = this;
41 if (!(instance instanceof _constructor))
42 instance = new _constructor(instance);
43 if (0 > _registry.indexOf(instance)) {
44 _registry.push(instance);
45 this._emit('add', instance);
46 }
47 return instance;
48 },
49 remove: function remove(instance) {
50 let _registry = this._registry;
51 let index = _registry.indexOf(instance)
52 if (0 <= index) {
53 this._emit('remove', instance);
54 _registry.splice(index, 1);
55 }
56 }
57 });
58 exports.Registry = Registry;
