| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| body { |
| margin: 0; |
| } |
| |
| dialog { |
| padding : 0; |
| } |
| </style> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body style="height: 10000px; width: 10000px"> |
| <div style="position: absolute; top: 5000px; left: 5000px; width: 20px;"> |
| <dialog style="top: 1200px; left: 1200px; right: auto; height: 100px; width: 50%;"> |
| </dialog> |
| </div> |
| <script> |
| "use strict"; |
| function checkPosition(dialog) { |
| assert_equals(dialog.offsetParent, null); |
| assert_equals(dialog.offsetTop, 1200); |
| assert_equals(dialog.offsetLeft, 1200); |
| // Since dialog's 'width' is '50%', the expected width is half of the |
| // viewport width, but viewport width may be odd. |
| var expectedWidth = document.documentElement.clientWidth / 2; |
| assert_approx_equals(dialog.clientWidth, expectedWidth, 0.5); |
| } |
| |
| test(function() { |
| // The dialog should be onscreen with a width of 50% of the viewport. It is the child of a |
| // narrow element positioned off screen, but its containing block is the initial containing |
| // block, so its position and percent lengths are relative to that. |
| window.scroll(1000, 1000); |
| var dialog = document.querySelector('dialog'); |
| dialog.showModal(); |
| checkPosition(dialog); |
| dialog.close(); |
| }, "Tests modal dialog's containing block is the initial containing block"); |
| </script> |
| </body> |
| </html> |
