tools/page_cycler/common/start.js

   1 // Copyright (c) 2011 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 document.title = 'page cycler';
   6
   7 // The __pages is assumed an array which containing the directories for
   8 // various pages to exercise. Some page cycler tests don't have this variable.
   9
  10 var initialPage;
  11 var hasVariablePages = (typeof __pages != 'undefined') &&
  12                        (__pages instanceof Array);
  13 if (hasVariablePages)
  14   initialPage = __pages[0];
  15
  16 document.cookie = '__navigated_to_report=0; path=/';
  17 document.cookie = '__pc_done=0; path=/';
  18 if (hasVariablePages)
  19   document.cookie = '__pc_pages=' + __pages + '; path=/';
  20 document.cookie = '__pc_timings=; path=/';
  21
  22 var options = location.search.substring(1).split('&');
  23
  24 function getopt(name) {
  25   var r = new RegExp('^' + name + '=');
  26   for (var i = 0; i < options.length; ++i) {
  27     if (options[i].match(r)) {
  28       return options[i].substring(name.length + 1);
  29     }
  30   }
  31   return null;
  32 }
  33
  34 function start() {
  35   var iterations = document.getElementById('iterations').value;
  36   window.resizeTo(800, 800);
  37   var ts = (new Date()).getTime();
  38   var url = '';
  39   if (hasVariablePages)
  40     url = initialPage + '/';
  41   url += 'index.html?n=' + iterations + '&i=0&p=0&ts=' + ts + '&td=0';
  42   window.location = url;
  43 }
  44
  45 function render_form() {
  46   var form = document.createElement('FORM');
  47   form.onsubmit = function(e) {
  48     start();
  49     e.preventDefault();
  50   };
  51
  52   var label = document.createTextNode('Iterations: ');
  53   form.appendChild(label);
  54
  55   var input = document.createElement('INPUT');
  56   input.setAttribute('id', 'iterations');
  57   input.setAttribute('type', 'number');
  58   var iterations = getopt('iterations');
  59   input.setAttribute('value', iterations ? iterations : '5');
  60   form.appendChild(input);
  61
  62   input = document.createElement('INPUT');
  63   input.setAttribute('type', 'submit');
  64   input.setAttribute('value', 'Start');
  65   form.appendChild(input);
  66
  67   document.body.appendChild(form);
  68 }
  69
  70 render_form();
  71
  72 // should we start automatically?
  73 if (location.search.match('auto=1')) {
  74   start();
  75 } else {
  76   if (!window.gc) {
  77     document.write('<h3 style=\'color:red\'>WARNING: window.gc is not ' +
  78                    'defined. Test results may be unreliable! You must ' +
  79                    'started chrome also with <tt>--js-flags=\"--expose_gc\"' +
  80                    '</tt> for this test to work manually</h3>');
  81   }
  82 }