mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 15:52:43 +00:00
301eb998c6
By memoizing already resolved custom properties in the DOM::Element, we achieve a notable speed increase when loading SerenityOS on GitHub.
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/OwnPtr.h>
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#include <LibWeb/CSS/CSSStyleDeclaration.h>
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#include <LibWeb/CSS/StyleProperties.h>
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#include <LibWeb/Forward.h>
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namespace Web::CSS {
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struct MatchingRule {
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RefPtr<CSSStyleRule> rule;
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size_t style_sheet_index { 0 };
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size_t rule_index { 0 };
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size_t selector_index { 0 };
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u32 specificity { 0 };
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};
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class StyleResolver {
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public:
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explicit StyleResolver(DOM::Document&);
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~StyleResolver();
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DOM::Document& document() { return m_document; }
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const DOM::Document& document() const { return m_document; }
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NonnullRefPtr<StyleProperties> resolve_style(DOM::Element&) const;
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Vector<MatchingRule> collect_matching_rules(const DOM::Element&) const;
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void sort_matching_rules(Vector<MatchingRule>&) const;
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struct CustomPropertyResolutionTuple {
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Optional<StyleProperty> style {};
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u32 specificity { 0 };
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};
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CustomPropertyResolutionTuple resolve_custom_property_with_specificity(DOM::Element&, const String&) const;
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Optional<StyleProperty> resolve_custom_property(DOM::Element&, const String&) const;
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static bool is_inherited_property(CSS::PropertyID);
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private:
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template<typename Callback>
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void for_each_stylesheet(Callback) const;
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DOM::Document& m_document;
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};
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}
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