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/*
* This file is part of the CSS implementation for KDE.
*
* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
* 1999 Waldo Bastian (bastian@kde.org)
* Copyright (C) 2004, 2006, 2007, 2008 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.
*/
#ifndef CSSSelector_h
#define CSSSelector_h
#include "QualifiedName.h"
namespace WebCore {
// this class represents a selector for a StyleRule
class CSSSelector {
public:
CSSSelector()
: m_tagHistory(0)
, m_simpleSelector(0)
, m_nextSelector(0)
, m_argument(nullAtom)
, m_attr(anyQName())
, m_tag(anyQName())
, m_relation(Descendant)
, m_match(None)
, m_pseudoType(PseudoNotParsed)
, m_parsedNth(false)
{
}
CSSSelector(const QualifiedName& qName)
: m_tagHistory(0)
, m_simpleSelector(0)
, m_nextSelector(0)
, m_argument(nullAtom)
, m_attr(anyQName())
, m_tag(qName)
, m_relation(Descendant)
, m_match(None)
, m_pseudoType(PseudoNotParsed)
, m_parsedNth(false)
{
}
~CSSSelector()
{
delete m_tagHistory;
delete m_simpleSelector;
delete m_nextSelector;
}
void append(CSSSelector* n)
{
CSSSelector* end = this;
while (end->m_nextSelector)
end = end->m_nextSelector;
end->m_nextSelector = n;
}
CSSSelector* next() { return m_nextSelector; }
/**
* Re-create selector text from selector's data
*/
String selectorText() const;
// checks if the 2 selectors (including sub selectors) agree.
bool operator==(const CSSSelector&);
// tag == -1 means apply to all elements (Selector = *)
unsigned specificity();
/* how the attribute value has to match.... Default is Exact */
enum Match {
None = 0,
Id,
Class,
Exact,
Set,
List,
Hyphen,
PseudoClass,
PseudoElement,
Contain, // css3: E[foo*="bar"]
Begin, // css3: E[foo^="bar"]
End // css3: E[foo$="bar"]
};
enum Relation {
Descendant = 0,
Child,
DirectAdjacent,
IndirectAdjacent,
SubSelector
};
enum PseudoType {
PseudoNotParsed = 0,
PseudoUnknown,
PseudoEmpty,
PseudoFirstChild,
PseudoFirstOfType,
PseudoLastChild,
PseudoLastOfType,
PseudoOnlyChild,
PseudoOnlyOfType,
PseudoFirstLine,
PseudoFirstLetter,
PseudoNthChild,
PseudoNthOfType,
PseudoNthLastChild,
PseudoNthLastOfType,
PseudoLink,
PseudoVisited,
PseudoAnyLink,
PseudoAutofill,
PseudoHover,
PseudoDrag,
PseudoFocus,
PseudoActive,
PseudoChecked,
PseudoEnabled,
PseudoFullPageMedia,
PseudoDisabled,
PseudoInputPlaceholder,
PseudoReadOnly,
PseudoReadWrite,
PseudoIndeterminate,
PseudoTarget,
PseudoBefore,
PseudoAfter,
PseudoLang,
PseudoNot,
PseudoResizer,
PseudoRoot,
PseudoScrollbar,
PseudoScrollbarBack,
PseudoScrollbarButton,
PseudoScrollbarCorner,
PseudoScrollbarForward,
PseudoScrollbarThumb,
PseudoScrollbarTrack,
PseudoScrollbarTrackPiece,
PseudoWindowInactive,
PseudoCornerPresent,
PseudoDecrement,
PseudoIncrement,
PseudoHorizontal,
PseudoVertical,
PseudoStart,
PseudoEnd,
PseudoDoubleButton,
PseudoSingleButton,
PseudoNoButton,
PseudoSelection,
PseudoFileUploadButton,
PseudoSliderThumb,
PseudoSearchCancelButton,
PseudoSearchDecoration,
PseudoSearchResultsDecoration,
PseudoSearchResultsButton,
PseudoMediaControlsPanel,
PseudoMediaControlsMuteButton,
PseudoMediaControlsPlayButton,
PseudoMediaControlsTimeDisplay,
PseudoMediaControlsTimeline,
PseudoMediaControlsSeekBackButton,
PseudoMediaControlsSeekForwardButton,
PseudoMediaControlsFullscreenButton
};
PseudoType pseudoType() const
{
if (m_pseudoType == PseudoNotParsed)
extractPseudoType();
return static_cast<PseudoType>(m_pseudoType);
}
bool hasTag() const { return m_tag != anyQName(); }
bool hasAttribute() const { return m_attr != anyQName(); }
Relation relation() const { return static_cast<Relation>(m_relation); }
mutable AtomicString m_value;
CSSSelector* m_tagHistory;
CSSSelector* m_simpleSelector; // Used for :not.
CSSSelector* m_nextSelector; // used for ,-chained selectors
AtomicString m_argument; // Used for :contains, :lang and :nth-*
QualifiedName m_attr;
QualifiedName m_tag;
unsigned m_relation : 3; // enum Relation
mutable unsigned m_match : 4; // enum Match
mutable unsigned m_pseudoType : 8; // PseudoType
protected:
bool m_parsedNth : 1; // used in CSSNthSelector
private:
void extractPseudoType() const;
};
} // namespace WebCore
#endif // CSSSelector_h
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