The Tor Browser / file comparison
comparison: dom/settings/SettingsQueue.jsm
dom/settings/SettingsQueue.jsm
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
equal
deleted
inserted
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| -1:000000000000 | 0:0cb009eb1466 |
|---|---|
| 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 file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 this.EXPORTED_SYMBOLS = ["Queue"]; | |
| 6 | |
| 7 this.Queue = function Queue() { | |
| 8 this._queue = []; | |
| 9 this._index = 0; | |
| 10 } | |
| 11 | |
| 12 Queue.prototype = { | |
| 13 getLength: function() { return (this._queue.length - this._index); }, | |
| 14 | |
| 15 isEmpty: function() { return (this._queue.length == 0); }, | |
| 16 | |
| 17 enqueue: function(item) { this._queue.push(item); }, | |
| 18 | |
| 19 dequeue: function() { | |
| 20 if(this.isEmpty()) | |
| 21 return undefined; | |
| 22 | |
| 23 var item = this._queue[this._index]; | |
| 24 if (++this._index * 2 >= this._queue.length){ | |
| 25 this._queue = this._queue.slice(this._index); | |
| 26 this._index = 0; | |
| 27 } | |
| 28 return item; | |
| 29 } | |
| 30 } |
