| <!doctype HTML> |
| <html> |
| <meta charset="utf8"> |
| <title>Content Visibility: focus on new element</title> |
| <link rel="author" title="Rakina Zata Amni" href="mailto:rakina@chromium.org"> |
| <link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility"> |
| <meta name="assert" content="focus can target content-visibility: auto subtrees created while hidden"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| .auto { |
| content-visibility: auto; |
| } |
| .spacer { |
| height: 3000px; |
| } |
| </style> |
| |
| <div class=spacer></div> |
| <div id=container class=auto></div> |
| |
| <script> |
| async_test((t) => { |
| function runTest() { |
| const focusable = document.createElement("div"); |
| focusable.tabIndex = 0; |
| container.appendChild(focusable); |
| focusable.focus(); |
| requestAnimationFrame(() => { |
| t.step(() => assert_greater_than(document.scrollingElement.scrollTop, 500)); |
| t.done(); |
| }); |
| } |
| onload = requestAnimationFrame(() => requestAnimationFrame(runTest)); |
| }, "Using tabindex to focus an newly constructed element in an auto subtree focuses element"); |
| </script> |
| </html> |
