extensions/test/data/web_view/accept_touch_events/guest.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 var LOG = function(msg) {
   6   window.console.log(msg);
   7 };
   8
   9 var touchDiv;
  10 var embedder;
  11
  12 function init() {
  13   touchDiv = document.createElement('div');
  14   touchDiv.innerText = 'With touch';
  15   document.body.appendChild(touchDiv);
  16 }
  17
  18 function handler() {}
  19
  20 function onAppCommand(command) {
  21   LOG('onAppCommand, command = ' + command);
  22   switch (command) {
  23     case 'install-touch-handler':
  24       touchDiv.addEventListener('touchstart', handler);
  25       sendMessageToEmbedder('installed-touch-handler');
  26       break;
  27     case 'uninstall-touch-handler':
  28       touchDiv.removeEventListener('touchstart', handler);
  29       sendMessageToEmbedder('uninstalled-touch-handler');
  30       break;
  31   }
  32 };
  33
  34 function sendMessageToEmbedder(message) {
  35   if (!embedder) {
  36      LOG('no embedder channel to send postMessage');
  37      return;
  38   }
  39
  40   embedder.postMessage(JSON.stringify([message]), '*');
  41 }
  42
  43 window.addEventListener('message', function(e) {
  44   embedder = e.source;
  45   var data = JSON.parse(e.data);
  46   if (data[0] == 'connect') {
  47     sendMessageToEmbedder('connected');
  48   }
  49 });
  50
  51 window.onload = init;