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LibWeb: Implement the :focus-within selector

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This matches if it has focus, or any nodes inside it do.
This commit is contained in:
Sam Atkins 2022-03-20 13:28:32 +00:00 • committed by Linus Groh
parent 4827092554
commit d60b3be29a
4 changed files with 12 additions and 0 deletions
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4
Userland/Libraries/LibWeb/CSS/SelectorEngine.cpp
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@ -137,6 +137,10 @@ static inline bool matches_pseudo_class(CSS::Selector::SimpleSelector::PseudoCla
return matches_hover_pseudo_class(element);
case CSS::Selector::SimpleSelector::PseudoClass::Type::Focus:
return element.is_focused();
case CSS::Selector::SimpleSelector::PseudoClass::Type::FocusWithin: {
auto* focused_element = element.document().focused_element();
return focused_element && element.is_inclusive_ancestor_of(*focused_element);
}
case CSS::Selector::SimpleSelector::PseudoClass::Type::FirstChild:
return !element.previous_element_sibling();
case CSS::Selector::SimpleSelector::PseudoClass::Type::LastChild: