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Ensure Element ID modifications inside disconnected shadow roots are registered (#34834)

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* Add test for modifying element IDs in disconnected shadow roots

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Register element ID modifications inside disconnected shadow roots

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Don't crash when registering named elements in disconnected shadow roots

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Fix test title

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-01-04 06:45:27 +01:00 • committed by GitHub
parent 1ab55e6b11
commit 75a22cfe2e
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4 changed files with 30 additions and 2 deletions
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7
tests/wpt/meta/MANIFEST.json vendored
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@ -766457,6 +766457,13 @@
{}
]
],
"getElementById-dynamic-002.html": [
"8fb1934c60753c39c081fa97987bbdf1cc68a521",
[
null,
{}
]
],
"historical.html": [
"4fa8be1dbc9537b904d51b74e8de37dc36a471d6",
[

20
tests/wpt/tests/shadow-dom/getElementById-dynamic-002.html vendored Normal file
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@ -0,0 +1,20 @@
<!doctype html>
<title>Shadow DOM: Modifying an element ID inside a disconnected shadow root does not break getElementById</title>
<link rel="help" href="https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid">
<link rel="author" name="Simon Wülker">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="host"></div>
<script>
test(function() {
let host = document.getElementById("host");
host.attachShadow({ mode: "open" }).innerHTML = `<div id="test-id"></div>`;
let element = host.shadowRoot.getElementById("test-id");
assert_true(!!element);
host.remove();
host.shadowRoot.getElementById("test-id").id = "new-id";
assert_equals(host.shadowRoot.getElementById("new-id"), element);
}, "ShadowRoot.getElementById works on elements whose id was modified after the root was disconnected");
</script>