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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2013 Google 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 "RuleFeature.h"
#include "RuleSet.h"
#include "UserAgentStyle.h"
#include <memory>
#include <wtf/HashMap.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class CSSStyleRule;
class CSSStyleSheet;
class ExtensionStyleSheets;
namespace MQ {
class MediaQueryEvaluator;
};
namespace Style {
enum class CascadeLevel : uint8_t;
class InspectorCSSOMWrappers;
class Resolver;
struct InvalidationRuleSet {
RefPtr<RuleSet> ruleSet;
// Invalidation selectors are used for attribute selector and :has() invalidation.
// For attributes selectors it contains the simple selectors for fast testing of whether an attribute mutation may have an effect.
// For :has() it contains the complex argument selectors for testing if adding or removing a node may affect :has() matching.
// Otherwise the list is empty.
CSSSelectorList invalidationSelectors;
MatchElement matchElement;
IsNegation isNegation;
};
enum class SelectorsForStyleAttribute : uint8_t { None, SubjectPositionOnly, NonSubjectPosition };
class ScopeRuleSets {
public:
ScopeRuleSets(Resolver&);
~ScopeRuleSets();
bool isAuthorStyleDefined() const { return m_isAuthorStyleDefined; }
RuleSet* userAgentMediaQueryStyle() const;
RuleSet* dynamicViewTransitionsStyle() const;
RuleSet& authorStyle() const { return *m_authorStyle; }
RuleSet* userStyle() const;
RuleSet* styleForCascadeLevel(CascadeLevel);
const RuleFeatureSet& features() const;
RuleSet* scopeBreakingHasPseudoClassInvalidationRuleSet() const { return m_scopeBreakingHasPseudoClassInvalidationRuleSet.get(); }
const Vector<InvalidationRuleSet>* idInvalidationRuleSets(const AtomString&) const;
const Vector<InvalidationRuleSet>* classInvalidationRuleSets(const AtomString&) const;
const Vector<InvalidationRuleSet>* attributeInvalidationRuleSets(const AtomString&) const;
const Vector<InvalidationRuleSet>* pseudoClassInvalidationRuleSets(const PseudoClassInvalidationKey&) const;
const Vector<InvalidationRuleSet>* hasPseudoClassInvalidationRuleSets(const PseudoClassInvalidationKey&) const;
const HashSet<AtomString>& customPropertyNamesInStyleContainerQueries() const;
SelectorsForStyleAttribute selectorsForStyleAttribute() const;
void setUsesSharedUserStyle(bool b) { m_usesSharedUserStyle = b; }
void initializeUserStyle();
void resetAuthorStyle();
void appendAuthorStyleSheets(std::span<const RefPtr<CSSStyleSheet>>, MQ::MediaQueryEvaluator*, Style::InspectorCSSOMWrappers&);
void resetUserAgentMediaQueryStyle();
bool hasViewportDependentMediaQueries() const;
bool hasContainerQueries() const;
bool hasScopeRules() const;
RefPtr<StyleRuleViewTransition> viewTransitionRule() const;
std::optional<DynamicMediaQueryEvaluationChanges> evaluateDynamicMediaQueryRules(const MQ::MediaQueryEvaluator&);
RuleFeatureSet& mutableFeatures();
void setDynamicViewTransitionsStyle(RuleSet* ruleSet)
{
m_dynamicViewTransitionsStyle = ruleSet;
}
bool& isInvalidatingStyleWithRuleSets() { return m_isInvalidatingStyleWithRuleSets; }
bool hasMatchingUserOrAuthorStyle(NOESCAPE const WTF::Function<bool(RuleSet&)>&);
private:
void collectFeatures() const;
void collectRulesFromUserStyleSheets(const Vector<RefPtr<CSSStyleSheet>>&, RuleSet& userStyle, const MQ::MediaQueryEvaluator&);
void updateUserAgentMediaQueryStyleIfNeeded() const;
RefPtr<RuleSet> m_authorStyle;
mutable RefPtr<RuleSet> m_userAgentMediaQueryStyle;
mutable RefPtr<RuleSet> m_dynamicViewTransitionsStyle;
RefPtr<RuleSet> m_userStyle;
Resolver& m_styleResolver;
mutable RuleFeatureSet m_features;
mutable RefPtr<RuleSet> m_scopeBreakingHasPseudoClassInvalidationRuleSet;
mutable HashMap<AtomString, std::unique_ptr<Vector<InvalidationRuleSet>>> m_idInvalidationRuleSets;
mutable HashMap<AtomString, std::unique_ptr<Vector<InvalidationRuleSet>>> m_classInvalidationRuleSets;
mutable HashMap<AtomString, std::unique_ptr<Vector<InvalidationRuleSet>>> m_attributeInvalidationRuleSets;
mutable HashMap<PseudoClassInvalidationKey, std::unique_ptr<Vector<InvalidationRuleSet>>> m_pseudoClassInvalidationRuleSets;
mutable HashMap<PseudoClassInvalidationKey, std::unique_ptr<Vector<InvalidationRuleSet>>> m_hasPseudoClassInvalidationRuleSets;
mutable std::optional<HashSet<AtomString>> m_customPropertyNamesInStyleContainerQueries;
mutable std::optional<SelectorsForStyleAttribute> m_cachedSelectorsForStyleAttribute;
mutable unsigned m_defaultStyleVersionOnFeatureCollection { 0 };
mutable unsigned m_userAgentMediaQueryRuleCountOnUpdate { 0 };
bool m_usesSharedUserStyle { false };
bool m_isAuthorStyleDefined { false };
// For catching <rdar://problem/53413013>
bool m_isInvalidatingStyleWithRuleSets { false };
};
inline const RuleFeatureSet& ScopeRuleSets::features() const
{
if (m_defaultStyleVersionOnFeatureCollection < UserAgentStyle::defaultStyleVersion)
collectFeatures();
return m_features;
}
// FIXME: There should be just the const version.
inline RuleFeatureSet& ScopeRuleSets::mutableFeatures()
{
if (m_defaultStyleVersionOnFeatureCollection < UserAgentStyle::defaultStyleVersion)
collectFeatures();
return m_features;
}
} // namespace Style
} // namespace WebCore
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