layout/generic/test/test_scroll_position_restore.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=1269539
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 1269539</title>
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <script src="/tests/SimpleTest/paint_listener.js"></script>
  11   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  12 </head>
  13 <body>
  14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1269539">Mozilla Bug 1269539</a>
  15 <p id="display"></p>
  16 <script>
  17 SimpleTest.waitForExplicitFinish();
  18
  19 var loadCount = 0;
  20 var childWin = window.open('file_scroll_position_restore.html', '_blank');
  21
  22 function handleLoad() {
  23   if (loadCount == 0) {
  24     loadCount++;
  25     childWin.scrollTo(0, childWin.scrollMaxY);
  26     childWin.waitForAllPaintsFlushed(function() {
  27       childWin.location.reload();
  28     });
  29   } else {
  30     childWin.waitForAllPaintsFlushed(function() {
  31       // Verify that the scroll position was retained.
  32       // NOTE: Window.scrollMaY is a long value, so we need to round
  33       // Window.scrollY which is double.
  34       // NOTE: Window.scrollMaxY is non-standard, so difference < 1.0 would not
  35       // be a big problem.
  36       is(Math.round(childWin.scrollY), childWin.scrollMaxY);
  37       childWin.close();
  38       SimpleTest.finish();
  39     });
  40   }
  41 }
  42
  43 </script>
  44 </body>
  45 </html>