chrome/renderer/resources/extensions/input.ime_custom_bindings.js

   1 // Copyright (c) 2012 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 input ime API. Only injected into the
   6 // v8 contexts for extensions which have permission for the API.
   7
   8 var binding = require('binding').Binding.create('input.ime');
   9
  10 var Event = require('event_bindings').Event;
  11
  12 binding.registerCustomHook(function(api) {
  13   var input_ime = api.compiledApi;
  14
  15   input_ime.onKeyEvent.dispatchToListener = function(callback, args) {
  16     var engineID = args[0];
  17     var keyData = args[1];
  18
  19     var result = false;
  20     try {
  21       result = $Function.call(Event.prototype.dispatchToListener,
  22           this, callback, args);
  23     } catch (e) {
  24       console.error('Error in event handler for onKeyEvent: ' + e.stack);
  25     }
  26     if (!input_ime.onKeyEvent.async) {
  27       input_ime.keyEventHandled(keyData.requestId, result);
  28     }
  29   };
  30
  31   input_ime.onKeyEvent.addListener = function(cb, opt_extraInfo) {
  32     input_ime.onKeyEvent.async = false;
  33     if (opt_extraInfo instanceof Array) {
  34       for (var i = 0; i < opt_extraInfo.length; ++i) {
  35         if (opt_extraInfo[i] == "async") {
  36           input_ime.onKeyEvent.async = true;
  37         }
  38       }
  39     }
  40     $Function.call(Event.prototype.addListener, this, cb);
  41   };
  42 });
  43
  44 exports.binding = binding.generate();