mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 01:35:08 +02:00
4e92765211
Handle inline stylesheet @keyframes insertions without falling back to broad owner invalidation. Recompute only elements whose computed animation-name already references the inserted keyframes name. Document-scoped insertions still walk the shadow-including tree so existing shadow trees pick up inherited animations, and shadow-root stylesheets fan out through the host root so :host combinators can refresh host-side consumers as well. Also introduce the shared ShadowRootStylesheetEffects analysis so later stylesheet mutation paths can reuse the same per-scope escape classification.
44 lines
1.6 KiB
HTML
44 lines
1.6 KiB
HTML
<!DOCTYPE html>
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<script src="../include.js"></script>
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<style id="style-sheet">
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#target {
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animation-name: fade;
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animation-duration: 1s;
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}
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</style>
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<div id="target">target</div>
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<div>bystander 1</div>
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<div>bystander 2</div>
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<div>bystander 3</div>
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<script>
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function settleAndReset(triggerElement) {
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// Force style resolution before we observe counters so the inserted
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// @keyframes rule is the only thing contributing to the measurement.
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getComputedStyle(triggerElement).animationName;
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getComputedStyle(triggerElement).animationName;
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internals.resetStyleInvalidationCounters();
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}
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function addBystanders(parent, count) {
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for (let i = 0; i < count; ++i) {
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const bystander = document.createElement("div");
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bystander.textContent = `bystander ${i + 4}`;
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parent.appendChild(bystander);
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}
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}
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test(() => {
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const target = document.getElementById("target");
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addBystanders(document.body, 25);
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const sheet = document.getElementById("style-sheet").sheet;
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settleAndReset(target);
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sheet.insertRule("@keyframes fade { from { opacity: 0; } to { opacity: 1; } }", sheet.cssRules.length);
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getComputedStyle(target).animationName;
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const invalidations = internals.getStyleInvalidationCounters().styleInvalidations;
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if (invalidations <= 1)
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println(`PASS: keyframes insertRule only invalidates animation users (${invalidations} invalidations)`);
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else
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println(`FAIL: keyframes insertRule only invalidates animation users (${invalidations} invalidations)`);
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});
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</script>
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