| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Firefox/layout/style/test/ (Firefox Browser Version 136.0.1©) Datei vom 10.2.2025 mit Größe 1 kB |
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Quelle test_invalidation_basic.htmlSprache: HTML |
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<!doctype html> <meta charset="utf-8"> <title> Test for bug 1368240: We only invalidate style as little as needed </title> <link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> <script src="/tests/SimpleTest/SimpleTest.js"></script> <style> .foo .bar { color: red; } #container ~ .bar { color: green; } </style> <div id="container"> <div></div> <div></div> <div></div> </div> <div></div> <div></div> <script> SimpleTest.waitForExplicitFinish(); const utils = SpecialPowers.getDOMWindowUtils(window); // TODO(emilio): Add an API to get the ComputedStyles we've recreated, to make // more elaborated tests. document.documentElement.offsetTop; const initialRestyleGeneration = utils.restyleGeneration; // Normally we'd restyle the whole subtree in this case, but we should go down // the tree invalidating as little as needed (nothing in this case). container.classList.add("foo"); document.documentElement.offsetTop; is(utils.restyleGeneration, initialRestyleGeneration, "Shouldn't have restyled any descendant"); container.setAttribute("id", ""); document.documentElement.offsetTop; is(utils.restyleGeneration, initialRestyleGeneration, "Shouldn't have restyled any sibling"); SimpleTest.finish(); </script>
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2026-07-11