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27 lines
1.3 KiB
HTML
27 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Shared style invalidation with removals</title>
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1707116">
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<link rel="help" href="https://drafts.csswg.org/css-scoping/">
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<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
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<link rel="author" href="https://mozilla.org" title="Mozilla">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="host-1"></div>
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<div id="host-2"></div>
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<script>
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const INITIALLY_COMMON_STYLE = `<style>:host { background-color: red !important }</style>`;
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let helper = document.querySelector("#host-1");
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let host = document.querySelector("#host-2");
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test(function() {
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helper.attachShadow({ mode: "open" }).innerHTML = INITIALLY_COMMON_STYLE;
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assert_equals(getComputedStyle(helper).backgroundColor, "rgb(255, 0, 0)", "Common style should apply to helper");
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host.attachShadow({ mode: "open" }).innerHTML = INITIALLY_COMMON_STYLE;
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assert_equals(getComputedStyle(host).backgroundColor, "rgb(255, 0, 0)", "Common style should apply to host");
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host.shadowRoot.innerHTML = `<style>:host { background-color: lime; width: 100px; height: 100px; }</style>`;
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assert_equals(getComputedStyle(host).backgroundColor, "rgb(0, 255, 0)", "Common style should no longer apply to host");
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});
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</script>
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