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LibWeb: Only reload link on rel change if it became a stylesheet

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Gingeh 2025-01-20 16:26:59 +11:00 • committed by Andreas Kling
parent cd576e594d
commit bf36d829ef
Notes: github-actions[bot] 2025-01-20 17:22:22 +00:00
3 changed files with 24 additions and 2 deletions
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5
Libraries/LibWeb/HTML/HTMLLinkElement.cpp
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@ -124,6 +124,7 @@ void HTMLLinkElement::attribute_changed(FlyString const& name, Optional<String>
Base::attribute_changed(name, old_value, value, namespace_);
// 4.6.7 Link types - https://html.spec.whatwg.org/multipage/links.html#linkTypes
auto old_relationship = m_relationship;
if (name == HTML::AttributeNames::rel) {
m_relationship = 0;
// Keywords are always ASCII case-insensitive, and must be compared as such.
@ -165,8 +166,8 @@ void HTMLLinkElement::attribute_changed(FlyString const& name, Optional<String>
if (
is_browsing_context_connected()
&& (
// AD-HOC: When the rel attribute changes
name == AttributeNames::rel ||
// AD-HOC: When the link element's type becomes a stylesheet
!(old_relationship & Relationship::Stylesheet) ||
// - When the href attribute of the link element of an external resource link that is already browsing-context connected is changed.
name == AttributeNames::href ||
// - When the disabled attribute of the link element of an external resource link that is already browsing-context connected is set, changed, or removed.

1
Tests/LibWeb/Text/expected/link-changed-rel.txt Normal file
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@ -0,0 +1 @@
Got load event

20
Tests/LibWeb/Text/input/link-changed-rel.html Normal file
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@ -0,0 +1,20 @@
<!DOCTYPE html>
<script src="include.js"></script>
<script>
asyncTest(done => {
let link = document.createElement("link");
link.setAttribute("href", "valid.css");
link.addEventListener("load", function() {
println("Got load event");
// link is still a stylesheet (no event)
link.setAttribute("rel", "preconnect stylesheet");
});
document.head.appendChild(link);
// link becomes a stylesheet (event)
link.setAttribute("rel", "stylesheet");
setTimeout(done, 1000);
});
</script>