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LibWeb: Optimize pseudo elements presence check in hover style update

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Instead of using `has_pseudo_elements()` that iterates over all pseudo
elements, only check if `::before` or `::after` are present.

Before this change, `has_pseudo_elements()` was 10% of profiles on
Discord while now it's 1-2%.
This commit is contained in:
Aliaksandr Kalenik
2025-02-19 17:31:54 +01:00
committed by Alexander Kalenik
parent 8ed7dee0f0
commit e1119023e9
2 changed files with 13 additions and 1 deletions
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4
Libraries/LibWeb/DOM/Document.cpp
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@@ -1753,9 +1753,11 @@ void Document::invalidate_style_for_elements_affected_by_hover_change(Node& old_
bool selector_matched = false;
if (SelectorEngine::matches(selector, element, {}, context, {}))
selector_matched = true;
if (element.has_pseudo_elements()) {
if (element.has_pseudo_element(CSS::Selector::PseudoElement::Type::Before)) {
if (SelectorEngine::matches(selector, element, {}, context, CSS::Selector::PseudoElement::Type::Before))
selector_matched = true;
}
if (element.has_pseudo_element(CSS::Selector::PseudoElement::Type::After)) {
if (SelectorEngine::matches(selector, element, {}, context, CSS::Selector::PseudoElement::Type::After))
selector_matched = true;
}