Issue 5028 - Use browser namespace

ext/common.js

Index: ext/common.js
===================================================================
--- a/ext/common.js
+++ b/ext/common.js
@@ -14,19 +14,16 @@
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 "use strict";
 
 (function()
 {
-  if (typeof chrome == "undefined")
-    window.chrome = {};
-
   if (typeof ext == "undefined")
     window.ext = {};
 
   function Page(source)
   {
     this._source = source;
   }
   Page.prototype =
@@ -72,126 +69,9 @@
     },
 
     removeListener(listener)
     {
       if ("_extWrapper" in listener)
         window.removeEventListener("message", listener._extWrapper, false);
     }
   };
-
-  /* I18n */
-
-  let getLocaleCandidates = function(selectedLocale)
-  {
-    let candidates = [];
-    let defaultLocale = "en-US";
-
-    // e.g. "ja-jp-mac" -> "ja-JP", note that the part after the second
-    // dash is dropped, since we only support language and region
-    let parts = selectedLocale.split("-");
-    let language = parts[0];
-    let region = (parts[1] || "").toUpperCase();
-
-    if (region)
-      candidates.push(language + "-" + region);
-
-    candidates.push(language);
-
-    if (candidates.indexOf(defaultLocale) == -1)
-      candidates.push(defaultLocale);
-
-    return candidates;
-  };
-
-  let selectedLocale = window.navigator.language;
-  let match = /[?&]locale=([\w-]+)/.exec(window.location.search);
-  if (match)
-    selectedLocale = match[1];
-
-  let locales = getLocaleCandidates(selectedLocale);
-  let catalog = Object.create(null);
-  let catalogFile = window.location.pathname.replace(/.*\//, "")
-    .replace(/\..*/, "") + ".json";
-
-  let replacePlaceholder = function(text, placeholder, content)
-  {
-    return text.split("$" + placeholder + "$").join(content || "");
-  };
-
-  let parseMessage = function(rawMessage)
-  {
-    let text = rawMessage.message;
-    let placeholders = [];
-
-    for (let placeholder in rawMessage.placeholders)
-    {
-      let {content} = rawMessage.placeholders[placeholder];
-
-      if (/^\$\d+$/.test(content))
-        placeholders[parseInt(content.substr(1), 10) - 1] = placeholder;
-      else
-        text = replacePlaceholder(text, placeholder, content);
-    }
-
-    return [text, placeholders];
-  };
-
-  let readCatalog = function(locale, file)
-  {
-    let xhr = new XMLHttpRequest();
-    xhr.open("GET", "locale/" + locale + "/" + file, false);
-    xhr.overrideMimeType("text/plain");
-
-    try
-    {
-      xhr.send();
-    }
-    catch (e)
-    {
-      return;
-    }
-
-    if (xhr.status != 200 && xhr.status != 0)
-      return;
-
-    let rawCatalog = JSON.parse(xhr.responseText);
-    for (let msgId in rawCatalog)
-    {
-      if (!(msgId in catalog))
-        catalog[msgId] = parseMessage(rawCatalog[msgId]);
-    }
-  };
-
-  chrome.i18n = {
-    getUILanguage()
-    {
-      return locales[0].replace(/_/g, "-");
-    },
-    getMessage(msgId, substitutions)
-    {
-      while (true)
-      {
-        let message = catalog[msgId];
-        if (message)
-        {
-          let text = message[0];
-          let placeholders = message[1];
-
-          if (!(substitutions instanceof Array))
-            substitutions = [substitutions];
-
-          for (let i = 0; i < placeholders.length; i++)
-            text = replacePlaceholder(text, placeholders[i], substitutions[i]);
-
-          return text;
-        }
-
-        if (locales.length == 0)
-          return "";
-
-        let locale = locales.shift();
-        readCatalog(locale, "common.json");
-        readCatalog(locale, catalogFile);
-      }
-    }
-  };
 }());