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LibWeb: Implement IntersectionObserver "intersection roots" per spec

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In particular, get the implicit root correctly for intersection
observers that don't have an explicit root specified.

This makes it possible to load the Terminal app on https://puter.com/
This commit is contained in:
Andreas Kling 2024-02-23 20:50:19 +01:00
parent 8586897928
commit 8addfc14af
3 changed files with 27 additions and 3 deletions
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17
Tests/LibWeb/Text/input/IntersectionObserver/implicit-root-after-originating-iframe-is-removed-from-dom.html Normal file
View file

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<body>
<iframe></iframe>
<script src="../include.js"></script>
<script>
asyncTest(done => {
let iframe = document.querySelector("iframe");
iframe.src =
"data:text/html," +
encodeURI("<script>new IntersectionObserver(function() { }, { })<" + "/script>");
iframe.onload = function () {
iframe.remove();
done();
println("PASS if we didn't crash!");
};
});
</script>
</body>