Missing file

extensions/firefox/tools/l10n.js

@@ -0,0 +1,113 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'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.request('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 data = getL10nData(key);
+    if (!data && fallback)
+      data = {textContent: fallback};
+    if (!data)
+      return '{{' + key + '}}';
+    return substArguments(data.textContent, args);
+  }
+
+  // translate an HTML element
+  function translateElement(element) {
+    if (!element || !element.dataset)
+      return;
+
+    // get the related l10n object
+    var data = getL10nData(element.dataset.l10nId);
+    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.request('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|set the document language and direction
+    get language() {
+      return {
+        // get|set the document language (ISO-639-1)
+        get code() { return gLanguage; },
+
+        // get the direction (ltr|rtl) of the current language
+        get direction() {
+          // 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';
+        }
+      };
+    }
+  };
+})(this);