| /* | |
| * 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" | |
| #include <wtf/Noncopyable.h> | |
| #include <wtf/OwnPtr.h> | |
| namespace WebCore { | |
| // this class represents a selector for a StyleRule | |
| class CSSSelector : public Noncopyable { | |
| public: | |
| CSSSelector() | |
| : m_tag(anyQName()) | |
| , m_relation(Descendant) | |
| , m_match(None) | |
| , m_pseudoType(PseudoNotParsed) | |
| , m_parsedNth(false) | |
| , m_isLastInSelectorList(false) | |
| , m_hasRareData(false) | |
| { | |
| } | |
| CSSSelector(const QualifiedName& qName) | |
| : m_tag(qName) | |
| , m_relation(Descendant) | |
| , m_match(None) | |
| , m_pseudoType(PseudoNotParsed) | |
| , m_parsedNth(false) | |
| , m_isLastInSelectorList(false) | |
| , m_hasRareData(false) | |
| { | |
| } | |
| ~CSSSelector() | |
| { | |
| if (m_hasRareData) | |
| delete m_data.m_rareData; | |
| else | |
| delete m_data.m_tagHistory; | |
| } | |
| /** | |
| * 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, | |
| PseudoDefault, | |
| PseudoDisabled, | |
| PseudoInputPlaceholder, | |
| PseudoOptional, | |
| PseudoRequired, | |
| PseudoReadOnly, | |
| PseudoReadWrite, | |
| PseudoValid, | |
| PseudoInvalid, | |
| 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, | |
| PseudoMediaControlsTimelineContainer, | |
| PseudoMediaControlsVolumeSliderContainer, | |
| PseudoMediaControlsCurrentTimeDisplay, | |
| PseudoMediaControlsTimeRemainingDisplay, | |
| PseudoMediaControlsToggleClosedCaptions, | |
| PseudoMediaControlsTimeline, | |
| PseudoMediaControlsVolumeSlider, | |
| PseudoMediaControlsSeekBackButton, | |
| PseudoMediaControlsSeekForwardButton, | |
| PseudoMediaControlsRewindButton, | |
| PseudoMediaControlsReturnToRealtimeButton, | |
| PseudoMediaControlsStatusDisplay, | |
| PseudoMediaControlsFullscreenButton, | |
| PseudoInputListButton, | |
| PseudoInnerSpinButton, | |
| PseudoOuterSpinButton, | |
| }; | |
| PseudoType pseudoType() const | |
| { | |
| if (m_pseudoType == PseudoNotParsed) | |
| extractPseudoType(); | |
| return static_cast<PseudoType>(m_pseudoType); | |
| } | |
| CSSSelector* tagHistory() const { return m_hasRareData ? m_data.m_rareData->m_tagHistory.get() : m_data.m_tagHistory; } | |
| void setTagHistory(CSSSelector* tagHistory); | |
| bool hasTag() const { return m_tag != anyQName(); } | |
| bool hasAttribute() const { return m_match == Id || m_match == Class || (m_hasRareData && m_data.m_rareData->m_attribute != anyQName()); } | |
| const QualifiedName& attribute() const; | |
| const AtomicString& argument() const { return m_hasRareData ? m_data.m_rareData->m_argument : nullAtom; } | |
| CSSSelector* simpleSelector() const { return m_hasRareData ? m_data.m_rareData->m_simpleSelector.get() : 0; } | |
| void setAttribute(const QualifiedName& value); | |
| void setArgument(const AtomicString& value); | |
| void setSimpleSelector(CSSSelector* value); | |
| bool parseNth(); | |
| bool matchNth(int count); | |
| bool matchesPseudoElement() const | |
| { | |
| if (m_pseudoType == PseudoUnknown) | |
| extractPseudoType(); | |
| return m_match == PseudoElement; | |
| } | |
| Relation relation() const { return static_cast<Relation>(m_relation); } | |
| bool isLastInSelectorList() const { return m_isLastInSelectorList; } | |
| void setLastInSelectorList() { m_isLastInSelectorList = true; } | |
| mutable AtomicString m_value; | |
| QualifiedName m_tag; | |
| unsigned m_relation : 3; // enum Relation | |
| mutable unsigned m_match : 4; // enum Match | |
| mutable unsigned m_pseudoType : 8; // PseudoType | |
| private: | |
| bool m_parsedNth : 1; // Used for :nth-* | |
| bool m_isLastInSelectorList : 1; | |
| bool m_hasRareData : 1; | |
| void extractPseudoType() const; | |
| struct RareData : Noncopyable { | |
| RareData(CSSSelector* tagHistory) | |
| : m_tagHistory(tagHistory) | |
| , m_simpleSelector(0) | |
| , m_attribute(anyQName()) | |
| , m_argument(nullAtom) | |
| , m_a(0) | |
| , m_b(0) | |
| { | |
| } | |
| bool parseNth(); | |
| bool matchNth(int count); | |
| OwnPtr<CSSSelector> m_tagHistory; | |
| OwnPtr<CSSSelector> m_simpleSelector; // Used for :not. | |
| QualifiedName m_attribute; // used for attribute selector | |
| AtomicString m_argument; // Used for :contains, :lang and :nth-* | |
| int m_a; // Used for :nth-* | |
| int m_b; // Used for :nth-* | |
| }; | |
| void createRareData() | |
| { | |
| if (m_hasRareData) | |
| return; | |
| m_data.m_rareData = new RareData(m_data.m_tagHistory); | |
| m_hasRareData = true; | |
| } | |
| union DataUnion { | |
| DataUnion() : m_tagHistory(0) { } | |
| CSSSelector* m_tagHistory; | |
| RareData* m_rareData; | |
| } m_data; | |
| }; | |
| } // namespace WebCore | |
| #endif // CSSSelector_h |