39 lines
1.7 KiB
HTML
39 lines
1.7 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>CSSOM: getComputedStyle gets invalidated for display: none elements (inheritance)</title>
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<link rel="help" href="https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle">
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<link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=186882">
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<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<style>
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#undisplayed, #host {
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display: none;
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color: red;
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}
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</style>
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<div id="undisplayed"><div id="child"></div></div>
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<div id="host"></div>
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<script>
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test(function() {
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let undisplayed_style = getComputedStyle(undisplayed);
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let undisplayed_child_style = getComputedStyle(child);
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assert_equals(undisplayed_style.color, "rgb(255, 0, 0)");
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assert_equals(undisplayed_child_style.color, "rgb(255, 0, 0)");
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undisplayed.style.color = "green";
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assert_equals(undisplayed_style.color, "rgb(0, 128, 0)");
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assert_equals(undisplayed_child_style.color, "rgb(0, 128, 0)");
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}, "getComputedStyle gets invalidated in display: none subtrees due to inherited changes to an ancestor");
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test(function() {
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host.attachShadow({ mode: 'open' }).innerHTML = `
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<div></div>
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`;
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let host_style = getComputedStyle(host);
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let shadow_style = getComputedStyle(host.shadowRoot.firstElementChild);
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assert_equals(host_style.color, "rgb(255, 0, 0)");
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assert_equals(shadow_style.color, "rgb(255, 0, 0)");
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host.style.color = "green";
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assert_equals(host_style.color, "rgb(0, 128, 0)");
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assert_equals(shadow_style.color, "rgb(0, 128, 0)");
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}, "getComputedStyle gets invalidated in display: none subtrees due to inherited changes to an ancestor shadow host");
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</script>
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