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/*
* 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; }
DOM::Document const& document() const { return m_document; }
NonnullRefPtr<StyleProperties> resolve_style(DOM::Element&) const;
Vector<MatchingRule> collect_matching_rules(DOM::Element const&) const;
void sort_matching_rules(Vector<MatchingRule>&) const;
struct CustomPropertyResolutionTuple {
Optional<StyleProperty> style {};
u32 specificity { 0 };
};
CustomPropertyResolutionTuple resolve_custom_property_with_specificity(DOM::Element&, String const&) const;
Optional<StyleProperty> resolve_custom_property(DOM::Element&, String const&) const;
private:
template<typename Callback>
void for_each_stylesheet(Callback) const;
DOM::Document& m_document;
};
}
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