| <!DOCTYPE html> |
| <html class=reftest-wait> |
| <link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#dom-layoutfragment-data"> |
| <link rel="match" href="green-square-ref.html"> |
| <meta name="assert" content="This test checks that passing something that can't be serialized to the parent triggers a fallback to block layout." /> |
| <style> |
| .test { |
| background: red; |
| width: 100px; |
| } |
| |
| .child { |
| height: 100px; |
| } |
| |
| @supports (display: layout(fallback-fn)) { |
| .test { |
| display: layout(fallback-fn); |
| background: green; |
| } |
| } |
| </style> |
| <script src="/common/reftest-wait.js"></script> |
| <script src="/common/worklet-reftest.js"></script> |
| |
| <div class="test"> |
| <div class="child"></div> |
| </div> |
| |
| <script id="code" type="text/worklet"> |
| registerLayout('fallback-fn', class { |
| async intrinsicSizes() {} |
| async layout(children, edges, constraints, styleMap) { |
| const childFragments = await children.map(child => child.layoutNextFragment()); |
| return {autoBlockSize: 0, childFragments, data: {fn: function() {}}}; |
| } |
| }); |
| </script> |
| |
| <script> |
| importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, document.getElementById('code').textContent); |
| </script> |
| </html> |
