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LibWeb/CSS: Correct parsing of @supports selector()

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A couple of fixes here:
- Parse a `<complex-selector>` instead of a `<selector-list>`
- Don't match if any unknown `::-webkit-*` pseudo-elements are found
This commit is contained in:
Sam Atkins 2025-03-14 14:37:24 +00:00
commit db597843d6
Notes: github-actions[bot] 2025-03-17 10:01:11 +00:00
8 changed files with 100 additions and 4 deletions
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18
Libraries/LibWeb/CSS/Selector.cpp
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@ -646,6 +646,24 @@ NonnullRefPtr<Selector> Selector::relative_to(SimpleSelector const& parent) cons
return Selector::create(move(copied_compound_selectors));
}
bool Selector::contains_unknown_webkit_pseudo_element() const
{
for (auto const& compound_selector : m_compound_selectors) {
for (auto const& simple_selector : compound_selector.simple_selectors) {
if (simple_selector.type == SimpleSelector::Type::PseudoClass) {
for (auto const& child_selector : simple_selector.pseudo_class().argument_selector_list) {
if (child_selector->contains_unknown_webkit_pseudo_element()) {
return true;
}
}
}
if (simple_selector.type == SimpleSelector::Type::PseudoElement && simple_selector.pseudo_element().type() == PseudoElement::Type::UnknownWebKit)
return true;
}
}
return false;
}
RefPtr<Selector> Selector::absolutized(Selector::SimpleSelector const& selector_for_nesting) const
{
if (!contains_the_nesting_selector())