43 lines
1.4 KiB
HTML
43 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com" />
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<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/#candidate-examination">
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<meta name="assert" content="The candidate examination algorithm iterates abspos descendants of the containing block. Being inside a fully clipped element and inside a fragmentainer shouldn't break that.">
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<style>
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html {
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column-count: 1; /* Fragmentainer */
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}
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body {
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position: relative; /* Containing block */
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height: 4000px;
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}
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main {
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height: 0px; /* Fully clipped */
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}
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div {
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position: absolute; /* Abspos */
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font-size: 100px;
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width: 200px;
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height: 100%;
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line-height: 100px;
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}
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</style>
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<main><div>abc <b id=b>def</b> ghi</div></main>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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// Tests anchoring to a text node that is moved by preceding text,
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// where the text is inside an absolutely positioned element,
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// there is a fully clippped element between the abspos and its contaning block,
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// and the containing block is inside a multi-column fragmentainer.
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test(() => {
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var b = document.querySelector("#b");
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var preText = b.previousSibling;
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document.scrollingElement.scrollTop = 150;
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preText.nodeValue = "abcd efg ";
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assert_equals(document.scrollingElement.scrollTop, 250);
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}, "Anchoring with text wrapping changes.");
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</script>
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