mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-01 12:07:14 +02:00
928a5247ff
Avoid broad document invalidation when adding or removing ordinary document-owned or shadow-owned stylesheets. Reuse the targeted StyleSheetInvalidation path for style rules, including shadow-host escapes, pseudo-element-only selectors, and trailing-universal cases. Keep the broad path for sheet contents whose effects are not captured by selector invalidation alone, including @property, @font-face, @font-feature-values, @keyframes, imported sheets, and top-level @layer blocks. Broad-path shadow-root sheets still reach host-side consumers through their active-scope effects.
36 lines
1.1 KiB
HTML
36 lines
1.1 KiB
HTML
<!DOCTYPE html>
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<script src="../include.js"></script>
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<div id="host"></div>
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<script>
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asyncTest(async done => {
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const host = document.getElementById("host");
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const shadowRoot = host.attachShadow({ mode: "open" });
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const sheet = new CSSStyleSheet();
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sheet.replaceSync(`
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:host {
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animation-name: fade;
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animation-duration: 1s;
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animation-fill-mode: both;
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}
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`);
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shadowRoot.adoptedStyleSheets = [sheet];
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println(`opacity before keyframes: ${getComputedStyle(host).opacity}`);
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sheet.insertRule(`
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@keyframes fade {
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from { opacity: 0.25; }
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to { opacity: 0.25; }
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}
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`, sheet.cssRules.length);
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await animationFrame();
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println(`opacity after keyframes insert: ${getComputedStyle(host).opacity}`);
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sheet.deleteRule(sheet.cssRules.length - 1);
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await animationFrame();
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println(`opacity after keyframes delete: ${getComputedStyle(host).opacity}`);
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done();
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});
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</script>
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