| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring-1/"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| |
| #scroller { |
| height: 200px; |
| overflow: scroll; |
| } |
| #before { height: 50px; } |
| #table-row { |
| display: table-row; |
| overflow-anchor: none; |
| width: 100px; |
| height: 100px; |
| } |
| #after { margin-bottom: 500px; } |
| |
| </style> |
| <div id="scroller"> |
| <div id="before"></div> |
| <div id="table-row">content</div> |
| <div id="after"></div> |
| </div> |
| <script> |
| |
| // Tests that the anchor exclusion API works with table parts that generate |
| // anonymous table box wrappers |
| |
| test(() => { |
| let scroller = document.querySelector('#scroller'); |
| let before = document.querySelector('#before'); |
| |
| // Scroll down so that #table-row is the only element in view |
| scroller.scrollTop = 50; |
| |
| // Expand #before so that we might perform a scroll adjustment |
| before.style.height = "100px"; |
| |
| // We shouldn't have selected #table-row as an anchor as it is |
| // 'overflow-anchor: none' |
| assert_equals(scroller.scrollTop, 50); |
| }, "A table with anonymous wrappers and 'overflow-anchor: none' shouldn't generate any scroll anchor candidates."); |
| |
| </script> |