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LibWeb: Make :hover invalidation logic reusable for all pseudo classes

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We achieve this by keeping track of all checked pseudo class selectors
in the SelectorEngine code. We also give StyleComputer per-pseudo-class
rule caches.
This commit is contained in:
Andreas Kling 2025-04-17 13:39:30 +02:00 • committed by Andreas Kling
commit e1777f6e79
Notes: github-actions[bot] 2025-04-17 17:47:22 +00:00
13 changed files with 134 additions and 59 deletions
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8
Libraries/LibWeb/CSS/Selector.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2018-2025, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2021-2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
@ -14,6 +14,7 @@
#include <LibWeb/CSS/Keyword.h>
#include <LibWeb/CSS/Parser/ComponentValue.h>
#include <LibWeb/CSS/PseudoClass.h>
#include <LibWeb/CSS/PseudoClassBitmap.h>
#include <LibWeb/CSS/PseudoElement.h>
namespace Web::CSS {
@ -236,7 +237,7 @@ public:
Optional<PseudoElementSelector> const& pseudo_element() const { return m_pseudo_element; }
NonnullRefPtr<Selector> relative_to(SimpleSelector const&) const;
bool contains_the_nesting_selector() const { return m_contains_the_nesting_selector; }
bool contains_hover_pseudo_class() const { return m_contains_hover_pseudo_class; }
bool contains_pseudo_class(PseudoClass pseudo_class) const { return m_contained_pseudo_classes.get(pseudo_class); }
bool contains_unknown_webkit_pseudo_element() const;
RefPtr<Selector> absolutized(SimpleSelector const& selector_for_nesting) const;
u32 specificity() const;
@ -259,7 +260,8 @@ private:
bool m_can_use_fast_matches { false };
bool m_can_use_ancestor_filter { false };
bool m_contains_the_nesting_selector { false };
bool m_contains_hover_pseudo_class { false };
PseudoClassBitmap m_contained_pseudo_classes;
void collect_ancestor_hashes();