1 // Copyright 2013 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 /** @fileoverview The chrome.devtools API does not support notifications from 6 * within a Web page nor does it report on events occuring in the page. For now 7 * we poll the page to determine a reasonable time to report the scripts. 8 */ 9 10 (function() { 11 /* 12 * @param {function} Called after the 'load' event on the inspected window 13 * @return {function} A function to be injected into the inspected window. 14 */ 15 function LoadMonitor(onLoadedCallback) { 16 17 function checkForLoad() { 18 var expr = 'window.__inspectedWindowLoaded'; 19 function onEval(isLoaded, isException) { 20 if (isException) 21 throw new Error('Eval failed for ' + expr, isException.value); 22 if (isLoaded) 23 onLoadedCallback(); 24 else 25 pollForLoad(); 26 } 27 chrome.devtools.inspectedWindow.eval(expr, onEval); 28 } 29 30 function pollForLoad() { 31 setTimeout(checkForLoad, 200); 32 } 33 34 pollForLoad(); 35 } 36 37 LoadMonitor.prototype = { 38 // This function should be converted to a string and run in the Web page 39 injectedScript: function() { 40 // Initialize a secret data structure. 41 window.__inspectedWindowLoaded = false; 42 window.addEventListener('load', function() { 43 window.__inspectedWindowLoaded = true; 44 console.log('loaded'); 45 }); 46 } 47 }; 48 49 window.InspectedWindow = window.InspectedWindow || {}; 50 InspectedWindow.LoadMonitor = LoadMonitor; 51 })(); 52 53 54
