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++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/NonnullRefPtrVector.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <LibWeb/CSS/CSSStyleDeclaration.h>
|
|
#include <LibWeb/CSS/StyleProperties.h>
|
|
#include <LibWeb/Forward.h>
|
|
|
|
namespace Web::CSS {
|
|
|
|
struct MatchingRule {
|
|
RefPtr<CSSStyleRule> rule;
|
|
size_t style_sheet_index { 0 };
|
|
size_t rule_index { 0 };
|
|
size_t selector_index { 0 };
|
|
u32 specificity { 0 };
|
|
};
|
|
|
|
class StyleResolver {
|
|
public:
|
|
explicit StyleResolver(DOM::Document&);
|
|
~StyleResolver();
|
|
|
|
DOM::Document& document() { return m_document; }
|
|
const DOM::Document& document() const { return m_document; }
|
|
|
|
NonnullRefPtr<StyleProperties> resolve_style(DOM::Element&) const;
|
|
|
|
Vector<MatchingRule> collect_matching_rules(const DOM::Element&) const;
|
|
void sort_matching_rules(Vector<MatchingRule>&) const;
|
|
struct CustomPropertyResolutionTuple {
|
|
Optional<StyleProperty> style {};
|
|
u32 specificity { 0 };
|
|
};
|
|
CustomPropertyResolutionTuple resolve_custom_property_with_specificity(DOM::Element&, const String&) const;
|
|
Optional<StyleProperty> resolve_custom_property(DOM::Element&, const String&) const;
|
|
|
|
static bool is_inherited_property(CSS::PropertyID);
|
|
|
|
private:
|
|
template<typename Callback>
|
|
void for_each_stylesheet(Callback) const;
|
|
|
|
DOM::Document& m_document;
|
|
};
|
|
|
|
}
|