| <!DOCTYPE html> |
| <html class=reftest-wait> |
| <link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#dom-layoutconstraints-data"> |
| <link rel="match" href="green-square-ref.html"> |
| <meta name="assert" content="This test checks that passing data to a child layout works correctly." /> |
| <style> |
| .test { |
| background: red; |
| width: 100px; |
| } |
| |
| @supports (display: layout(parent)) { |
| .test { |
| display: layout(parent); |
| background: green; |
| } |
| |
| .child { |
| display: layout(child); |
| } |
| } |
| </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"> |
| const DATA = { |
| str: 'hello', |
| num: 42, |
| obj: {str2: 'world'}, |
| }; |
| |
| registerLayout('parent', class { |
| async intrinsicSizes() {} |
| async layout([child], edges, constraints, styleMap) { |
| |
| const childFragment = await child.layoutNextFragment({data: DATA}); |
| |
| // If the child's block-size is 100 the structured cloning worked. |
| if (childFragment.blockSize === 100) { |
| return {autoBlockSize: 100, childFragments: [childFragment]}; |
| } |
| |
| return {autoBlockSize: 0, childFragments: [childFragment]}; |
| } |
| }); |
| |
| registerLayout('child', class { |
| async intrinsicSizes() {} |
| async layout(children, edges, constraints, styleMap) { |
| // Use JSON.stringify to make sure the structured cloning worked. |
| if (constraints.data !== DATA && |
| JSON.stringify(constraints.data) === JSON.stringify(DATA)) { |
| return {autoBlockSize: 100}; |
| } |
| |
| return {autoBlockSize: 0}; |
| } |
| }); |
| </script> |
| |
| <script> |
| importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, document.getElementById('code').textContent); |
| </script> |
| </html> |
