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comparison: addon-sdk/source/lib/sdk/util/registry.js
addon-sdk/source/lib/sdk/util/registry.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:7e6422de48a7 |
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| 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"; | |
| 5 | |
| 6 module.metadata = { | |
| 7 "stability": "unstable" | |
| 8 }; | |
| 9 | |
| 10 const { EventEmitter } = require('../deprecated/events'); | |
| 11 const unload = require('../system/unload'); | |
| 12 | |
| 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; | |
| 59 |
