browser/extensions/pdfjs/content/web/l10n.js@6474c204b198
browser/extensions/pdfjs/content/web/l10n.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 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
3 /* globals FirefoxCom */
5 'use strict';
7 // Small subset of the webL10n API by Fabien Cazenave for pdf.js extension.
8 (function(window) {
9 var gLanguage = '';
11 // fetch an l10n objects
12 function getL10nData(key) {
13 var response = FirefoxCom.requestSync('getStrings', key);
14 var data = JSON.parse(response);
15 if (!data) {
16 console.warn('[l10n] #' + key + ' missing for [' + gLanguage + ']');
17 }
18 return data;
19 }
21 // replace {{arguments}} with their values
22 function substArguments(text, args) {
23 if (!args) {
24 return text;
25 }
26 return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function(all, name) {
27 return (name in args ? args[name] : '{{' + name + '}}');
28 });
29 }
31 // translate a string
32 function translateString(key, args, fallback) {
33 var i = key.lastIndexOf('.');
34 var name, property;
35 if (i >= 0) {
36 name = key.substring(0, i);
37 property = key.substring(i + 1);
38 } else {
39 name = key;
40 property = 'textContent';
41 }
42 var data = getL10nData(name);
43 var value = (data && data[property]) || fallback;
44 if (!value) {
45 return '{{' + key + '}}';
46 }
47 return substArguments(value, args);
48 }
50 // translate an HTML element
51 function translateElement(element) {
52 if (!element || !element.dataset) {
53 return;
54 }
56 // get the related l10n object
57 var key = element.dataset.l10nId;
58 var data = getL10nData(key);
59 if (!data) {
60 return;
61 }
63 // get arguments (if any)
64 // TODO: more flexible parser?
65 var args;
66 if (element.dataset.l10nArgs) {
67 try {
68 args = JSON.parse(element.dataset.l10nArgs);
69 } catch (e) {
70 console.warn('[l10n] could not parse arguments for #' + key + '');
71 }
72 }
74 // translate element
75 // TODO: security check?
76 for (var k in data) {
77 element[k] = substArguments(data[k], args);
78 }
79 }
82 // translate an HTML subtree
83 function translateFragment(element) {
84 element = element || document.querySelector('html');
86 // check all translatable children (= w/ a `data-l10n-id' attribute)
87 var children = element.querySelectorAll('*[data-l10n-id]');
88 var elementCount = children.length;
89 for (var i = 0; i < elementCount; i++) {
90 translateElement(children[i]);
91 }
93 // translate element itself if necessary
94 if (element.dataset.l10nId) {
95 translateElement(element);
96 }
97 }
99 window.addEventListener('DOMContentLoaded', function() {
100 gLanguage = FirefoxCom.requestSync('getLocale', null);
102 translateFragment();
104 // fire a 'localized' DOM event
105 var evtObject = document.createEvent('Event');
106 evtObject.initEvent('localized', false, false);
107 evtObject.language = gLanguage;
108 window.dispatchEvent(evtObject);
109 });
111 // Public API
112 document.mozL10n = {
113 // get a localized string
114 get: translateString,
116 // get the document language
117 getLanguage: function() {
118 return gLanguage;
119 },
121 // get the direction (ltr|rtl) of the current language
122 getDirection: function() {
123 // http://www.w3.org/International/questions/qa-scripts
124 // Arabic, Hebrew, Farsi, Pashto, Urdu
125 var rtlList = ['ar', 'he', 'fa', 'ps', 'ur'];
126 return (rtlList.indexOf(gLanguage) >= 0 ? 'rtl' : 'ltr');
127 },
129 // translate an element or document fragment
130 translate: translateFragment
131 };
132 })(this);
