chrome/test/data/extensions/api_test/active_tab/background.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 var assertEq = chrome.test.assertEq;
   6 var assertFalse = chrome.test.assertFalse;
   7 var assertTrue = chrome.test.assertTrue;
   8 var callbackFail = chrome.test.callbackFail;
   9 var callbackPass = chrome.test.callbackPass;
  10
  11 var RoleType = chrome.automation.RoleType;
  12
  13 function canXhr(url) {
  14   assertFalse(url == null);
  15   var xhr = new XMLHttpRequest();
  16   xhr.open('GET', url, false);
  17   var success = true;
  18   try {
  19     xhr.send();
  20   } catch(e) {
  21     assertEq('NetworkError', e.name);
  22     success = false;
  23   }
  24   return success;
  25 }
  26
  27 var cachedUrl = null;
  28 var iframeDone = null;
  29
  30 chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
  31   if (request.message == 'xhr') {
  32     sendResponse({url: cachedUrl});
  33   } else {
  34     assertTrue(request.success);
  35     iframeDone();
  36   }
  37 });
  38
  39 var iframeUrl = chrome.extension.getURL('iframe.html');
  40 var injectIframe =
  41     'var iframe = document.createElement("iframe");\n' +
  42     'iframe.src = "' + iframeUrl + '";\n' +
  43     'document.body.appendChild(iframe);\n';
  44
  45 chrome.browserAction.onClicked.addListener(function(tab) {
  46   iframeDone = chrome.test.callbackAdded();
  47   cachedUrl = tab.url;
  48   chrome.tabs.executeScript({ code: injectIframe }, callbackPass());
  49   assertTrue(canXhr(tab.url));
  50
  51   chrome.automation.getTree(callbackPass(function(rootNode) {
  52     assertFalse(rootNode == undefined);
  53     assertEq(RoleType.rootWebArea, rootNode.role);
  54   }));
  55 });
  56
  57 chrome.webNavigation.onCompleted.addListener(function(details) {
  58   chrome.tabs.executeScript({ code: 'true' }, callbackFail(
  59          'Cannot access contents of url "' + details.url +
  60          '". Extension manifest must request permission to access this host.'));
  61
  62   chrome.automation.getTree(callbackFail(
  63       'Cannot request automation tree on url "' + details.url +
  64         '". Extension manifest must request permission to access this host.'));
  65
  66   assertFalse(canXhr(details.url));
  67 });