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LibWeb: Invalidate viewport's text blocks cache on layout update

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156c1083e9 introduced a text blocks cache
for better performance when searching through text on a page, but when
we partially recreate the layout tree, this cache does not get
invalidated. We now rebuild the entire text blocks cache after a layout
update.
This commit is contained in:
Jelle Raaijmakers 2025-05-14 15:36:52 +02:00 • committed by Tim Ledbetter
commit c3a5e8e266
Notes: github-actions[bot] 2025-05-15 10:45:40 +00:00
4 changed files with 38 additions and 0 deletions
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30
Tests/LibWeb/Text/input/HTML/Window-find-mutations.html Normal file
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<!DOCTYPE html>
<script src="../include.js"></script>
<div>foobar</div>
<script>
test(() => {
function showSelection() {
let range = getSelection().getRangeAt(0);
println(`Selection: ${range.startContainer} ${range.startOffset} - ${range.endContainer} ${range.endOffset}`);
}
// Select 'foobar'.
window.find('foobar');
showSelection();
// Remove 'bar'.
document.querySelector('div').childNodes[0].deleteData(3, 3);
showSelection();
// Try to find 'bar'.
getSelection().empty();
window.find('bar');
// This should now fail.
try {
showSelection();
} catch (e) {
println(`Expected exception: ${e}`);
}
});
</script>