canvas-as-container-005.html (1083B)
1 <!doctype html> 2 <title>CSS Container Queries Test: Canvas as dynamic size container for focusable child with display</title> 3 <link rel="help" href="https://drafts.csswg.org/css-conditional-5/#size-container"> 4 <script src="/resources/testharness.js"></script> 5 <script src="/resources/testharnessreport.js"></script> 6 <script src="support/cq-testcommon.js"></script> 7 <style> 8 canvas { 9 display: block; 10 width: 100px; 11 height: 100px; 12 container-type: size; 13 } 14 #target { display: none; } 15 @container (width = 200px) { 16 #target { display: block; } 17 } 18 </style> 19 <p>Test passes if there is a filled green square.</p> 20 <canvas id="canvas"> 21 <div id="target" tabIndex="1"></div> 22 </canvas> 23 <script> 24 setup(() => assert_implements_size_container_queries()); 25 26 test(() => { 27 target.focus(); 28 assert_not_equals(document.activeElement, target); 29 }, "Initially display:none, not focusable"); 30 31 test(() => { 32 canvas.style.width = "200px"; 33 target.focus(); 34 assert_equals(document.activeElement, target); 35 }, "Focusable after container size change"); 36 </script>