LayoutTests/fast/js/window-properties.html

   1 <html>
   2 <body>
   3 <div id="log"></div>
   4 <script type="text/javascript">
   5
   6 if (window.layoutTestController)
   7   layoutTestController.dumpAsText();
   8
   9 var logDiv = document.getElementById("log");
  10 var lastLogLine = 0;
  11
  12 function log(string) {
  13   var newDiv = document.createElement('DIV');
  14   newDiv.appendChild(document.createTextNode(string));
  15   logDiv.appendChild(newDiv);
  16   lastLogLine++;
  17 }
  18
  19 function shouldSkipProperty(fullPropertyName, propertyValue) {
  20   if (fullPropertyName.match(/_childrenPrintedUnderName$/))
  21     return true;
  22 }
  23
  24 function shouldSkipChildren(fullPropertyName, propertyValue) {
  25   if (propertyValue == logDiv
  26     || fullPropertyName == 'window.document.body.lastChild')
  27     return true;
  28 }
  29
  30 function havePrintedChildren(fullPropertyName, propertyValue) {
  31   try {
  32     var childrenPrintedUnderName = propertyValue._childrenPrintedUnderName;
  33     if (!childrenPrintedUnderName)
  34       propertyValue._childrenPrintedUnderName = fullPropertyName;
  35     return childrenPrintedUnderName;
  36   } catch (e) {
  37     log(fullPropertyName + " : ERROR determining if we have already printed children, assuming true");
  38     return true;
  39   }
  40 }
  41
  42 function printProperties(object, parentString) {
  43   for (propertyName in object) {
  44     var fullPropertyName = parentString + '.' + propertyName;
  45     var propertyValue;
  46     try {
  47       propertyValue = object[propertyName]; // Firefox throws here for certain unimplemented DOM3 properties
  48     } catch (e) {
  49       log(fullPropertyName + " : ERROR accessing property, exception thrown: " + e);
  50       continue;
  51     }
  52     if (shouldSkipProperty(fullPropertyName, propertyValue))
  53       continue;
  54     var type = (propertyValue === null ? 'null' : typeof(propertyValue));
  55     log(fullPropertyName + " : " + type);
  56     var previousPropertyName = '';
  57     if (propertyValue && type == 'object') {
  58       if (shouldSkipChildren(fullPropertyName, propertyValue))
  59         log(fullPropertyName + ' *** children skipped (explicitly)');
  60       else if (previousPropertyName = havePrintedChildren(fullPropertyName, propertyValue))
  61         log(fullPropertyName + " *** children skipped, already printed above under '" + previousPropertyName + "'");
  62       else
  63         printProperties(propertyValue, fullPropertyName);
  64     }
  65   }
  66 }
  67
  68 log('window : ' + typeof(window));
  69 havePrintedChildren(window, 'window');
  70 printProperties(window, 'window');
  71
  72 </script>
  73 </body>
  74 </html>