The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/l10n/html.js
addon-sdk/source/lib/sdk/l10n/html.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:2e384806db9e |
|---|---|
| 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 { Ci, Cu } = require("chrome"); | |
| 11 const events = require("../system/events"); | |
| 12 const core = require("./core"); | |
| 13 | |
| 14 const assetsURI = require('../self').data.url(); | |
| 15 const { Services } = Cu.import("resource://gre/modules/Services.jsm"); | |
| 16 | |
| 17 const hideContentStyle = "data:text/css,:root {visibility: hidden !important;}"; | |
| 18 const hideSheetUri = Services.io.newURI(hideContentStyle, null, null); | |
| 19 | |
| 20 // Taken from Gaia: | |
| 21 // https://github.com/andreasgal/gaia/blob/04fde2640a7f40314643016a5a6c98bf3755f5fd/webapi.js#L1470 | |
| 22 function translateElement(element) { | |
| 23 element = element || document; | |
| 24 | |
| 25 // check all translatable children (= w/ a `data-l10n-id' attribute) | |
| 26 var children = element.querySelectorAll('*[data-l10n-id]'); | |
| 27 var elementCount = children.length; | |
| 28 for (var i = 0; i < elementCount; i++) { | |
| 29 var child = children[i]; | |
| 30 | |
| 31 // translate the child | |
| 32 var key = child.dataset.l10nId; | |
| 33 var data = core.get(key); | |
| 34 if (data) | |
| 35 child.textContent = data; | |
| 36 } | |
| 37 } | |
| 38 exports.translateElement = translateElement; | |
| 39 | |
| 40 function onDocumentReady2Translate(event) { | |
| 41 let document = event.target; | |
| 42 document.removeEventListener("DOMContentLoaded", onDocumentReady2Translate, | |
| 43 false); | |
| 44 | |
| 45 translateElement(document); | |
| 46 | |
| 47 try { | |
| 48 // Finally display document when we finished replacing all text content | |
| 49 if (document.defaultView) { | |
| 50 let winUtils = document.defaultView.QueryInterface(Ci.nsIInterfaceRequestor) | |
| 51 .getInterface(Ci.nsIDOMWindowUtils); | |
| 52 winUtils.removeSheet(hideSheetUri, winUtils.USER_SHEET); | |
| 53 } | |
| 54 } | |
| 55 catch(e) { | |
| 56 console.exception(e); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 function onContentWindow(event) { | |
| 61 let document = event.subject; | |
| 62 | |
| 63 // Accept only HTML documents | |
| 64 if (!(document instanceof Ci.nsIDOMHTMLDocument)) | |
| 65 return; | |
| 66 | |
| 67 // Bug 769483: data:URI documents instanciated with nsIDOMParser | |
| 68 // have a null `location` attribute at this time | |
| 69 if (!document.location) | |
| 70 return; | |
| 71 | |
| 72 // Accept only document from this addon | |
| 73 if (document.location.href.indexOf(assetsURI) !== 0) | |
| 74 return; | |
| 75 | |
| 76 try { | |
| 77 // First hide content of the document in order to have content blinking | |
| 78 // between untranslated and translated states | |
| 79 let winUtils = document.defaultView.QueryInterface(Ci.nsIInterfaceRequestor) | |
| 80 .getInterface(Ci.nsIDOMWindowUtils); | |
| 81 winUtils.loadSheet(hideSheetUri, winUtils.USER_SHEET); | |
| 82 } | |
| 83 catch(e) { | |
| 84 console.exception(e); | |
| 85 } | |
| 86 // Wait for DOM tree to be built before applying localization | |
| 87 document.addEventListener("DOMContentLoaded", onDocumentReady2Translate, | |
| 88 false); | |
| 89 } | |
| 90 | |
| 91 // Listen to creation of content documents in order to translate them as soon | |
| 92 // as possible in their loading process | |
| 93 const ON_CONTENT = "document-element-inserted"; | |
| 94 let enabled = false; | |
| 95 function enable() { | |
| 96 if (!enabled) { | |
| 97 events.on(ON_CONTENT, onContentWindow); | |
| 98 enabled = true; | |
| 99 } | |
| 100 } | |
| 101 exports.enable = enable; | |
| 102 | |
| 103 function disable() { | |
| 104 if (enabled) { | |
| 105 events.off(ON_CONTENT, onContentWindow); | |
| 106 enabled = false; | |
| 107 } | |
| 108 } | |
| 109 exports.disable = disable; | |
| 110 | |
| 111 require("sdk/system/unload").when(disable); |
