Issue 1668 - Fixed direction on add-on pages for right-to-left scripts

chrome/content/ui/i18n.js

Index: chrome/content/ui/i18n.js
===================================================================
--- a/chrome/content/ui/i18n.js
+++ b/chrome/content/ui/i18n.js
@@ -16,14 +16,13 @@
  */
 
 var i18n;
+var locale;
 
 if (typeof ext != "undefined")
+{
   i18n = ext.i18n;
-else if (typeof chrome != "undefined")
-  // TODO: This check only exist for backwards compatibility, while the Safari
-  // port isn't merged into the adblockpluschrome repo. So this branch should
-  // be removed when the Safari port was merged.
-  i18n = chrome.i18n;
+  locale = ext.i18n.getMessage("@@ui_locale").replace(/_/g, "-");
+}
 else
 {
   // Using Firefox' approach on i18n instead
@@ -84,6 +83,8 @@
       }
     };
   })();
+
+  locale = require("utils").Utils.appLocale;
 }
 
 // Inserts i18n strings into matching elements. Any inner HTML already in the element is
@@ -146,5 +147,14 @@
     return [timeString, d.toLocaleDateString()];
 }
 
-// Fill in the strings as soon as possible
-window.addEventListener("DOMContentLoaded", loadI18nStrings, true);
+function onDOMLoaded()
+{
+  document.documentElement.lang = locale;
+
+  if (locale == "ar" || locale == "he" || locale == "fa")
+    document.documentElement.dir = "rtl";
+
+  loadI18nStrings();
+}
+
+window.addEventListener("DOMContentLoaded", onDOMLoaded, true);