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58 lines
1.6 KiB
HTML
58 lines
1.6 KiB
HTML
<!DOCTYPE html>
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<title>@container-dependent elements respond to size changes of an @container-dependent iframe</title>
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<link rel="help" href="https://drafts.csswg.org/css-contain-3/#size-container">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="support/cq-testcommon.js"></script>
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<style>
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#container {
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container-type: size;
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width: 200px;
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height: 200px;
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}
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iframe {
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width: 200px;
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height: 40px;
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}
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@container (width > 300px) {
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iframe { width: 400px; }
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}
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</style>
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<div id=container>
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<iframe id=iframe srcdoc="
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<style>
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div#container {
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container-type: size;
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height: 20px;
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}
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div#child { color: red; }
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@container (width > 300px) {
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div#child { color: green; }
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}
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</style>
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<div id=container>
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<div id=child>Test</div>
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</div>
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"></iframe>
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</div>
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<script>
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setup(() => assert_implements_container_queries());
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function waitForLoad(w) {
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return new Promise(resolve => w.addEventListener('load', resolve));
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}
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promise_test(async () => {
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await waitForLoad(window);
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let inner_div = iframe.contentDocument.querySelector('div#child');
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assert_equals(getComputedStyle(inner_div).color, 'rgb(255, 0, 0)');
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// Changing the size of the outer container changes the size of the iframe,
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// which in turn should change the size of the inner container (inside that
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// iframe).
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container.style.width = '400px';
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container.style.setProperty('--x', 'x'); // crbug.com/1312940
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assert_equals(getComputedStyle(inner_div).color, 'rgb(0, 128, 0)');
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});
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</script>
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