native_client_sdk/src/examples/api/messaging/example.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 function attachListeners() {
   6   var number1El = document.querySelector('#addend1');
   7   var number2El = document.querySelector('#addend2');
   8   var resultEl = document.querySelector('#result');
   9
  10   document.getElementById('addAsync').addEventListener('click', function() {
  11     var value1 = parseInt(number1El.value);
  12     var value2 = parseInt(number2El.value);
  13     common.naclModule.postMessage([value1, value2]);
  14
  15     // The result is returned in handleMessage below.
  16   });
  17
  18   document.getElementById('addSync').addEventListener('click', function() {
  19     var value1 = parseInt(number1El.value);
  20     var value2 = parseInt(number2El.value);
  21     var result =
  22         common.naclModule.postMessageAndAwaitResponse([value1, value2]);
  23
  24     // This is the result returned from the module synchronously (i.e. when the
  25     // addSync button is pressed)
  26     resultEl.textContent = result;
  27   });
  28 }
  29
  30 // Called by the common.js module.
  31 function handleMessage(message_event) {
  32   // This is the result returned from the module asynchronously (i.e. when the
  33   // addAsync button is pressed)
  34   result.textContent = message_event.data;
  35 }