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 (function() { 6 7 // This function is converted to a string and becomes the preprocessor 8 function preprocessor(source, url, listenerName) { 9 url = url ? url : '(eval)'; 10 url += listenerName ? '_' + listenerName : ''; 11 var prefix = 'window.__preprocessed = window.__preprocessed || [];\n'; 12 prefix += 'window.__preprocessed.push(\'' + url +'\');\n'; 13 var postfix = '\n//# sourceURL=' + url + '.js\n'; 14 return prefix + source + postfix; 15 } 16 17 function extractPreprocessedFiles(onExtracted) { 18 var expr = 'window.__preprocessed'; 19 function onEval(files, isException) { 20 if (isException) 21 throw new Error('Eval failed for ' + expr, isException.value); 22 onExtracted(files); 23 } 24 chrome.devtools.inspectedWindow.eval(expr, onEval); 25 } 26 27 function reloadWithPreprocessor(injectedScript) { 28 var options = { 29 ignoreCache: true, 30 userAgent: undefined, 31 injectedScript: '(' + injectedScript + ')()', 32 preprocessingScript: '(' + preprocessor + ')' 33 }; 34 chrome.devtools.inspectedWindow.reload(options); 35 } 36 37 function demoPreprocessor() { 38 function onLoaded() { 39 extractPreprocessedFiles(updateUI); 40 } 41 var loadMonitor = new InspectedWindow.LoadMonitor(onLoaded); 42 reloadWithPreprocessor(loadMonitor.injectedScript); 43 } 44 45 function listen() { 46 var reloadButton = document.querySelector('.reload-button'); 47 reloadButton.addEventListener('click', demoPreprocessor); 48 } 49 50 window.addEventListener('load', listen); 51 52 function createRow(url) { 53 var li = document.createElement('li'); 54 li.textContent = url; 55 return li; 56 } 57 58 function updateUI(preprocessedFiles) { 59 var rowContainer = document.querySelector('.js-preprocessed-urls'); 60 rowContainer.innerHTML = ''; 61 preprocessedFiles.forEach(function(url) { 62 rowContainer.appendChild(createRow(url)); 63 }); 64 } 65 66 })(); 67 68 69
