extensions/renderer/resources/i18n_custom_bindings.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Custom binding for the i18n API.
   6
   7 var binding = require('binding').Binding.create('i18n');
   8
   9 var i18nNatives = requireNative('i18n');
  10 var GetL10nMessage = i18nNatives.GetL10nMessage;
  11 var GetL10nUILanguage = i18nNatives.GetL10nUILanguage;
  12
  13 binding.registerCustomHook(function(bindingsAPI, extensionId) {
  14   var apiFunctions = bindingsAPI.apiFunctions;
  15
  16   apiFunctions.setUpdateArgumentsPreValidate('getMessage', function() {
  17     var args = $Array.slice(arguments);
  18
  19     // The first argument is the message, and should be a string.
  20     var message = args[0];
  21     if (typeof(message) !== 'string') {
  22       console.warn(extensionId + ': the first argument to getMessage should ' +
  23                    'be type "string", was ' + message +
  24                    ' (type "' + typeof(message) + '")');
  25       args[0] = String(message);
  26     }
  27
  28     return args;
  29   });
  30
  31   apiFunctions.setHandleRequest('getMessage',
  32                                 function(messageName, substitutions) {
  33     return GetL10nMessage(messageName, substitutions, extensionId);
  34   });
  35
  36   apiFunctions.setHandleRequest('getUILanguage', function() {
  37     return GetL10nUILanguage();
  38   });
  39 });
  40
  41 exports.binding = binding.generate();