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/*
* Copyright (C) 2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010, 2014 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 "CSSSelector.h"
#include <wtf/TZoneMalloc.h>
#include <wtf/text/AtomStringHash.h>
namespace WebCore {
struct CSSSelectorParserContext;
class MutableCSSSelector;
using MutableCSSSelectorList = Vector<std::unique_ptr<MutableCSSSelector>>;
class MutableCSSSelector {
WTF_MAKE_TZONE_ALLOCATED(MutableCSSSelector);
public:
enum class Combinator {
Child,
DescendantSpace,
DirectAdjacent,
IndirectAdjacent
};
static std::unique_ptr<MutableCSSSelector> parsePseudoClassSelector(StringView, const CSSSelectorParserContext&);
static std::unique_ptr<MutableCSSSelector> parsePseudoElementSelector(StringView, const CSSSelectorParserContext&);
static std::unique_ptr<MutableCSSSelector> parsePagePseudoSelector(StringView);
MutableCSSSelector();
// Recursively copy the selector chain.
MutableCSSSelector(const CSSSelector&);
explicit MutableCSSSelector(const QualifiedName&);
~MutableCSSSelector();
std::unique_ptr<CSSSelector> releaseSelector() { return WTFMove(m_selector); }
const CSSSelector* selector() const { return m_selector.get(); };
CSSSelector* selector() { return m_selector.get(); }
void setValue(const AtomString& value, bool matchLowerCase = false) { m_selector->setValue(value, matchLowerCase); }
const AtomString& value() const { return m_selector->value(); }
void setAttribute(const QualifiedName& value, CSSSelector::AttributeMatchType type) { m_selector->setAttribute(value, type); }
void setArgument(const AtomString& value) { m_selector->setArgument(value); }
void setNth(int a, int b) { m_selector->setNth(a, b); }
void setMatch(CSSSelector::Match value) { m_selector->setMatch(value); }
void setRelation(CSSSelector::Relation value) { m_selector->setRelation(value); }
void setForPage() { m_selector->setForPage(); }
CSSSelector::Match match() const { return m_selector->match(); }
CSSSelector::PseudoElement pseudoElement() const { return m_selector->pseudoElement(); }
const CSSSelectorList* selectorList() const { return m_selector->selectorList(); }
void setPseudoElement(CSSSelector::PseudoElement type) { m_selector->setPseudoElement(type); }
void setPseudoClass(CSSSelector::PseudoClass type) { m_selector->setPseudoClass(type); }
void adoptSelectorVector(MutableCSSSelectorList&&);
void setArgumentList(FixedVector<AtomString>);
void setLangList(FixedVector<PossiblyQuotedIdentifier>);
void setSelectorList(std::unique_ptr<CSSSelectorList>);
void setImplicit() { m_selector->setImplicit(); }
CSSSelector::PseudoClass pseudoClass() const { return m_selector->pseudoClass(); }
bool matchesPseudoElement() const;
bool isHostPseudoClass() const { return m_selector->isHostPseudoClass(); }
bool hasExplicitNestingParent() const;
bool hasExplicitPseudoClassScope() const;
// FIXME-NEWPARSER: "slotted" was removed here for now, since it leads to a combinator
// connection of ShadowDescendant, and the current shadow DOM code doesn't expect this. When
// we do fix this issue, make sure to patch the namespace prependTag code to remove the slotted
// special case, since it will be covered by this function once again.
bool needsImplicitShadowCombinatorForMatching() const;
MutableCSSSelector* tagHistory() const { return m_tagHistory.get(); }
MutableCSSSelector* leftmostSimpleSelector();
const MutableCSSSelector* leftmostSimpleSelector() const;
bool startsWithExplicitCombinator() const;
void setTagHistory(std::unique_ptr<MutableCSSSelector> selector) { m_tagHistory = WTFMove(selector); }
void clearTagHistory() { m_tagHistory.reset(); }
void insertTagHistory(CSSSelector::Relation before, std::unique_ptr<MutableCSSSelector>, CSSSelector::Relation after);
void appendTagHistory(CSSSelector::Relation, std::unique_ptr<MutableCSSSelector>);
void appendTagHistory(Combinator, std::unique_ptr<MutableCSSSelector>);
void appendTagHistoryAsRelative(std::unique_ptr<MutableCSSSelector>);
void prependTagSelector(const QualifiedName&, bool tagIsForNamespaceRule = false);
std::unique_ptr<MutableCSSSelector> releaseTagHistory();
private:
std::unique_ptr<CSSSelector> m_selector;
std::unique_ptr<MutableCSSSelector> m_tagHistory;
};
// FIXME: WebKitUnknown is listed below as otherwise @supports does the wrong thing, but there ought
// to be a better solution.
inline bool MutableCSSSelector::needsImplicitShadowCombinatorForMatching() const
{
return match() == CSSSelector::Match::PseudoElement
&& (pseudoElement() == CSSSelector::PseudoElement::UserAgentPart
#if ENABLE(VIDEO)
|| pseudoElement() == CSSSelector::PseudoElement::Cue
#endif
|| pseudoElement() == CSSSelector::PseudoElement::Part
|| pseudoElement() == CSSSelector::PseudoElement::Slotted
|| pseudoElement() == CSSSelector::PseudoElement::UserAgentPartLegacyAlias
|| pseudoElement() == CSSSelector::PseudoElement::WebKitUnknown);
}
} // namespace WebCore
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