constraints-data.https.html (1744B)
1 <!DOCTYPE html> 2 <html class=reftest-wait> 3 <link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#dom-layoutconstraints-data"> 4 <link rel="match" href="green-square-ref.html"> 5 <meta name="assert" content="This test checks that passing data to a child layout works correctly." /> 6 <style> 7 .test { 8 background: red; 9 width: 100px; 10 } 11 12 @supports (display: layout(parent)) { 13 .test { 14 display: layout(parent); 15 background: green; 16 } 17 18 .child { 19 display: layout(child); 20 } 21 } 22 </style> 23 <script src="/common/reftest-wait.js"></script> 24 <script src="/common/worklet-reftest.js"></script> 25 26 <div class="test"> 27 <div class="child"></div> 28 </div> 29 30 <script id="code" type="text/worklet"> 31 const DATA = { 32 str: 'hello', 33 num: 42, 34 obj: {str2: 'world'}, 35 }; 36 37 registerLayout('parent', class { 38 async intrinsicSizes() {} 39 async layout([child], edges, constraints, styleMap) { 40 41 const childFragment = await child.layoutNextFragment({data: DATA}); 42 43 // If the child's block-size is 100 the structured cloning worked. 44 if (childFragment.blockSize === 100) { 45 return {autoBlockSize: 100, childFragments: [childFragment]}; 46 } 47 48 return {autoBlockSize: 0, childFragments: [childFragment]}; 49 } 50 }); 51 52 registerLayout('child', class { 53 async intrinsicSizes() {} 54 async layout(children, edges, constraints, styleMap) { 55 // Use JSON.stringify to make sure the structured cloning worked. 56 if (constraints.data !== DATA && 57 JSON.stringify(constraints.data) === JSON.stringify(DATA)) { 58 return {autoBlockSize: 100}; 59 } 60 61 return {autoBlockSize: 0}; 62 } 63 }); 64 </script> 65 66 <script> 67 importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, document.getElementById('code').textContent); 68 </script> 69 </html>