The Tor Browser / file comparison
comparison: browser/components/translation/LanguageDetector.jsm
browser/components/translation/LanguageDetector.jsm
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- 6474c204b198
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| -1:000000000000 | 0:98857fb63697 |
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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 file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 this.EXPORTED_SYMBOLS = ["LanguageDetector"]; | |
| 8 | |
| 9 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); | |
| 10 | |
| 11 XPCOMUtils.defineLazyModuleGetter(this, "Promise", | |
| 12 "resource://gre/modules/Promise.jsm"); | |
| 13 | |
| 14 const WORKER_URL = "resource:///modules/translation/cld-worker.js"; | |
| 15 | |
| 16 let detectionQueue = []; | |
| 17 | |
| 18 let workerReady = false; | |
| 19 let pendingStrings = []; | |
| 20 | |
| 21 XPCOMUtils.defineLazyGetter(this, "worker", () => { | |
| 22 let worker = new Worker(WORKER_URL); | |
| 23 worker.onmessage = function(aMsg) { | |
| 24 if (aMsg.data == "ready") { | |
| 25 workerReady = true; | |
| 26 for (let string of pendingStrings) | |
| 27 worker.postMessage(string); | |
| 28 pendingStrings = []; | |
| 29 } | |
| 30 else | |
| 31 detectionQueue.shift().resolve(aMsg.data); | |
| 32 } | |
| 33 return worker; | |
| 34 }); | |
| 35 | |
| 36 this.LanguageDetector = { | |
| 37 /** | |
| 38 * Detect the language of a given string | |
| 39 * | |
| 40 * @returns {Promise} | |
| 41 * @resolves When detection is finished, with a object containing | |
| 42 * these fields: | |
| 43 * - 'language' (string with a language code) | |
| 44 * - 'confident' (boolean). | |
| 45 */ | |
| 46 detectLanguage: function(aString) { | |
| 47 let deferred = Promise.defer(); | |
| 48 detectionQueue.push(deferred); | |
| 49 if (worker && workerReady) | |
| 50 worker.postMessage(aString); | |
| 51 else | |
| 52 pendingStrings.push(aString); | |
| 53 return deferred.promise; | |
| 54 } | |
| 55 }; |
