third_party/WebKit/LayoutTests/fast/dom/HTMLDialogElement/dialog-scrolled-viewport.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <style>
   5 body {
   6     margin: 0;
   7 }
   8
   9 dialog {
  10     padding : 0;
  11 }
  12
  13 #console {
  14     position: fixed;
  15 }
  16 </style>
  17 <script src="../../../resources/js-test.js"></script>
  18 </head>
  19 <body style="height: 10000px; width: 10000px">
  20 <div style="position: absolute; top: 5000px; left: 5000px; width: 20px;">
  21     <dialog id="dialog" style="top: 1200px; left: 1200px; right: auto; height: 100px; width: 50%; background-color: yellow">
  22     </dialog>
  23 </div>
  24 <script>
  25 debug("This tests that a modal dialog's containing block is the initial containing block.");
  26 debug('The dialog should be onscreen with a width of 50% of the viewport. It is the child of a ' +
  27       'narrow element positioned off screen, but its containing block is the initial containing ' +
  28       'block, so its position and percent lengths are relative to that.');
  29
  30 function checkPosition(dialog) {
  31     shouldBe('dialog.offsetParent', 'null');
  32     shouldBe('dialog.offsetTop', '1200');
  33     shouldBe('dialog.offsetLeft', '1200');
  34     // Since dialog's 'width' is '50%', the expected width is half of the
  35     // viewport width, but viewport width may be odd. It seems Blink rounds up for
  36     // percentage lengths, so use Math.ceil here.
  37     expectedWidth = Math.ceil(document.documentElement.clientWidth / 2);
  38     shouldBe('dialog.clientWidth', 'expectedWidth');
  39 }
  40
  41 window.scroll(1000, 1000);
  42 dialog = document.getElementById('dialog');
  43 dialog.showModal();
  44 checkPosition(dialog);
  45 dialog.close();
  46 </script>
  47 </body>
  48 </html>