62 lines
2.4 KiB
HTML
62 lines
2.4 KiB
HTML
<!DOCTYPE html>
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<title>:is() inside shadow pseudos</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<link rel="help" href="https://drafts.csswg.org/selectors-4/#matches">
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<link rel="help" href="https://drafts.csswg.org/css-scoping/#host-selector">
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<link rel="help" href="https://drafts.csswg.org/css-scoping/#slotted-pseudo">
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<div class="parent1"><div id="host1" class=a><p class=e>::slotted</p></div></div>
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<div class="parent2"><div id="host2" class=b><p class=d>::slotted</p></div></div>
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<div class="parent3"><div id="host3" class=c><p class=f>::slotted</p></div></div>
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</div>
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<script>
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let shadow1 = host1.attachShadow({ mode: 'open' });
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let shadow2 = host2.attachShadow({ mode: 'open' });
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let shadow3 = host3.attachShadow({ mode: 'open' });
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const html = `
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<style>
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* { color: blue; }
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:host(:is(.a, .b)) b { color: green; }
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:host-context(:is(.parent1, .parent2)) i { color: green; }
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::slotted(:is(.e, .f)) { color: green; }
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/* The following should not match: */
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:host(:is(.z)) b { color: red; }
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:host(:is(.a + .b)) b { color: red; }
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:host-context(:is(.z)) i { color: red; }
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:host-context(:is(.parent1 .parent2)) i { color: red; }
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::slotted(:is(.z)) { color: red; }
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::slotted(:is(.a > .b)) { color: red; }
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</style>
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<b>:host</b>
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<i>:host-context</i>
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<slot></slot>
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`;
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shadow1.innerHTML = html;
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shadow2.innerHTML = html;
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shadow3.innerHTML = html;
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const getComputedColor = e => getComputedStyle(e).color;
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const green = 'rgb(0, 128, 0)';
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const blue = 'rgb(0, 0, 255)';
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test(function() {
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assert_equals(getComputedColor(shadow1.querySelector('b')), green);
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assert_equals(getComputedColor(shadow2.querySelector('b')), green);
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assert_equals(getComputedColor(shadow3.querySelector('b')), blue);
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}, ':is() inside :host()');
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test(function() {
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assert_equals(getComputedColor(shadow1.querySelector('i')), green);
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assert_equals(getComputedColor(shadow2.querySelector('i')), green);
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assert_equals(getComputedColor(shadow3.querySelector('i')), blue);
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}, ':is() inside :host-context()');
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test(function() {
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assert_equals(getComputedColor(document.querySelector('.e')), green);
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assert_equals(getComputedColor(document.querySelector('.d')), blue);
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assert_equals(getComputedColor(document.querySelector('.f')), green);
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}, ':is() inside ::slotted()');
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</script>
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