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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003-2021 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "MediaQuery.h"
#include "RuleSet.h"
namespace WebCore {
namespace Style {
class RuleSetBuilder {
public:
enum class ShrinkToFit : bool { Enable, Disable };
enum class ShouldResolveNesting : bool { No, Yes };
RuleSetBuilder(RuleSet&, const MQ::MediaQueryEvaluator&, Resolver* = nullptr, ShrinkToFit = ShrinkToFit::Enable, ShouldResolveNesting = ShouldResolveNesting::No);
~RuleSetBuilder();
void addRulesFromSheet(const StyleSheetContents&, const MQ::MediaQueryList& sheetQuery = { });
void addStyleRule(const StyleRule&);
private:
RuleSetBuilder(const MQ::MediaQueryEvaluator&);
void addStyleRule(StyleRuleWithNesting&);
void addRulesFromSheetContents(const StyleSheetContents&);
void addChildRules(const Vector<Ref<StyleRuleBase>>&);
void addChildRule(Ref<StyleRuleBase>);
void disallowDynamicMediaQueryEvaluationIfNeeded();
void addStyleRuleWithSelectorList(const CSSSelectorList&, const StyleRule&);
void registerLayers(const Vector<CascadeLayerName>&);
void pushCascadeLayer(const CascadeLayerName&);
void popCascadeLayer(const CascadeLayerName&);
void updateCascadeLayerPriorities();
void addMutatingRulesToResolver();
void updateDynamicMediaQueries();
void resolveSelectorListWithNesting(StyleRuleWithNesting&);
struct MediaQueryCollector {
~MediaQueryCollector();
const MQ::MediaQueryEvaluator& evaluator;
bool collectDynamic { false };
struct DynamicContext {
const MQ::MediaQueryList& queries;
Vector<size_t> affectedRulePositions { };
HashSet<Ref<const StyleRule>> affectedRules { };
};
Vector<DynamicContext> dynamicContextStack { };
Vector<RuleSet::DynamicMediaQueryRules> dynamicMediaQueryRules { };
OptionSet<MQ::MediaQueryDynamicDependency> allDynamicDependencies { };
bool pushAndEvaluate(const MQ::MediaQueryList&);
void pop(const MQ::MediaQueryList&);
void addRuleIfNeeded(const RuleData&);
};
RefPtr<RuleSet> m_ruleSet;
MediaQueryCollector m_mediaQueryCollector;
Resolver* m_resolver { nullptr };
const ShrinkToFit m_shrinkToFit { ShrinkToFit::Enable };
CascadeLayerName m_resolvedCascadeLayerName;
HashMap<CascadeLayerName, RuleSet::CascadeLayerIdentifier> m_cascadeLayerIdentifierMap;
RuleSet::CascadeLayerIdentifier m_currentCascadeLayerIdentifier { 0 };
Vector<const CSSSelectorList*> m_styleRuleStack;
const ShouldResolveNesting m_shouldResolveNesting { ShouldResolveNesting::No };
RuleSet::ContainerQueryIdentifier m_currentContainerQueryIdentifier { 0 };
Vector<RuleSet::ResolverMutatingRule> m_collectedResolverMutatingRules;
bool requiresStaticMediaQueryEvaluation { false };
};
}
}
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