The Tor Browser: browser/extensions/pdfjs/content/web/l10n.js@6474c204b198 (annotated)

browser/extensions/pdfjs/content/web/l10n.js@6474c204b198 (annotated)

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.

 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
 /* globals FirefoxCom */
 'use strict';
 // Small subset of the webL10n API by Fabien Cazenave for pdf.js extension.
 (function(window) {
   var gLanguage = '';
   // fetch an l10n objects
   function getL10nData(key) {
     var response = FirefoxCom.requestSync('getStrings', key);
     var data = JSON.parse(response);
     if (!data) {
       console.warn('[l10n] #' + key + ' missing for [' + gLanguage + ']');
     }
     return data;
   }
   // replace {{arguments}} with their values
   function substArguments(text, args) {
     if (!args) {
       return text;
     }
     return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function(all, name) {
       return (name in args ? args[name] : '{{' + name + '}}');
     });
   }
   // translate a string
   function translateString(key, args, fallback) {
     var i = key.lastIndexOf('.');
     var name, property;
     if (i >= 0) {
       name = key.substring(0, i);
       property = key.substring(i + 1);
     } else {
       name = key;
       property = 'textContent';
     }
     var data = getL10nData(name);
     var value = (data && data[property]) || fallback;
     if (!value) {
       return '{{' + key + '}}';
     }
     return substArguments(value, args);
   }
   // translate an HTML element
   function translateElement(element) {
     if (!element || !element.dataset) {
       return;
     }
     // get the related l10n object
     var key = element.dataset.l10nId;
     var data = getL10nData(key);
     if (!data) {
       return;
     }
     // get arguments (if any)
     // TODO: more flexible parser?
     var args;
     if (element.dataset.l10nArgs) {
       try {
         args = JSON.parse(element.dataset.l10nArgs);
       } catch (e) {
         console.warn('[l10n] could not parse arguments for #' + key + '');
       }
     }
     // translate element
     // TODO: security check?
     for (var k in data) {
       element[k] = substArguments(data[k], args);
     }
   }
   // translate an HTML subtree
   function translateFragment(element) {
     element = element || document.querySelector('html');
     // check all translatable children (= w/ a `data-l10n-id' attribute)
     var children = element.querySelectorAll('*[data-l10n-id]');
     var elementCount = children.length;
     for (var i = 0; i < elementCount; i++) {
       translateElement(children[i]);
     }
     // translate element itself if necessary
     if (element.dataset.l10nId) {
       translateElement(element);
     }
   }
   window.addEventListener('DOMContentLoaded', function() {
     gLanguage = FirefoxCom.requestSync('getLocale', null);
     translateFragment();
     // fire a 'localized' DOM event
     var evtObject = document.createEvent('Event');
     evtObject.initEvent('localized', false, false);
     evtObject.language = gLanguage;
     window.dispatchEvent(evtObject);
   });
   // Public API
   document.mozL10n = {
     // get a localized string
     get: translateString,
     // get the document language
     getLanguage: function() {
       return gLanguage;
     },
     // get the direction (ltr|rtl) of the current language
     getDirection: function() {
       // http://www.w3.org/International/questions/qa-scripts
       // Arabic, Hebrew, Farsi, Pashto, Urdu
       var rtlList = ['ar', 'he', 'fa', 'ps', 'ur'];
       return (rtlList.indexOf(gLanguage) >= 0 ? 'rtl' : 'ltr');
     },
     // translate an element or document fragment
     translate: translateFragment
   };
 })(this);