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LibWeb/DOM: Cache computed style for ::marker

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This allows us to inspect its properties. To avoid wasted work, we only
compute and cache the properties if the originating element was, or is,
displaying as a list item.
This commit is contained in:
Sam Atkins
2025-02-10 15:26:04 +00:00
parent 28a1297360
commit 49b505e4ae
1 changed files with 8 additions and 2 deletions
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10
Libraries/LibWeb/DOM/Element.cpp
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@@ -513,11 +513,15 @@ CSS::RequiredInvalidationAfterStyleChange Element::recompute_style()
new_computed_properties->set_property(CSS::PropertyID::TextAlign, CSS::CSSKeywordValue::create(CSS::Keyword::Start)); new_computed_properties->set_property(CSS::PropertyID::TextAlign, CSS::CSSKeywordValue::create(CSS::Keyword::Start));
} }
bool had_list_marker = false;
CSS::RequiredInvalidationAfterStyleChange invalidation; CSS::RequiredInvalidationAfterStyleChange invalidation;
if (m_computed_properties) if (m_computed_properties) {
invalidation = compute_required_invalidation(*m_computed_properties, new_computed_properties); invalidation = compute_required_invalidation(*m_computed_properties, new_computed_properties);
else had_list_marker = m_computed_properties->display().is_list_item();
} else {
invalidation = CSS::RequiredInvalidationAfterStyleChange::full(); invalidation = CSS::RequiredInvalidationAfterStyleChange::full();
}
if (!invalidation.is_none()) if (!invalidation.is_none())
set_computed_properties(move(new_computed_properties)); set_computed_properties(move(new_computed_properties));
@@ -542,6 +546,8 @@ CSS::RequiredInvalidationAfterStyleChange Element::recompute_style()
recompute_pseudo_element_style(CSS::Selector::PseudoElement::Type::Before); recompute_pseudo_element_style(CSS::Selector::PseudoElement::Type::Before);
recompute_pseudo_element_style(CSS::Selector::PseudoElement::Type::After); recompute_pseudo_element_style(CSS::Selector::PseudoElement::Type::After);
if (had_list_marker || m_computed_properties->display().is_list_item())
recompute_pseudo_element_style(CSS::Selector::PseudoElement::Type::Marker);
if (invalidation.is_none()) if (invalidation.is_none())
return invalidation; return invalidation;