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Diffstat (limited to 'src/3rdparty/webkit/WebCore/css/CSSStyleSelector.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/css/CSSStyleSelector.h | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/css/CSSStyleSelector.h b/src/3rdparty/webkit/WebCore/css/CSSStyleSelector.h new file mode 100644 index 0000000..74f9dd7 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/css/CSSStyleSelector.h @@ -0,0 +1,327 @@ +/* + * Copyright (C) 1999 Lars Knoll (knoll@kde.org) + * Copyright (C) 2003, 2004, 2005, 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 CSSStyleSelector_h +#define CSSStyleSelector_h + +#include "CSSFontSelector.h" +#include "KeyframeList.h" +#include "LinkHash.h" +#include "MediaQueryExp.h" +#include "RenderStyle.h" +#include "StringHash.h" +#include <wtf/HashMap.h> +#include <wtf/HashSet.h> +#include <wtf/RefPtr.h> +#include <wtf/Vector.h> + +namespace WebCore { + +class CSSMutableStyleDeclaration; +class CSSPrimitiveValue; +class CSSProperty; +class CSSFontFace; +class CSSFontFaceRule; +class CSSRuleData; +class CSSRuleDataList; +class CSSRuleList; +class CSSRuleSet; +class CSSSelector; +class CSSStyleRule; +class CSSStyleSheet; +class CSSValue; +class CSSVariableDependentValue; +class CSSVariablesRule; +class Document; +class Element; +class Frame; +class FrameView; +class KURL; +class MediaQueryEvaluator; +class Node; +class Settings; +class StyleImage; +class StyleSheet; +class StyleSheetList; +class StyledElement; +class WebKitCSSKeyframesRule; + +class MediaQueryResult { +public: + MediaQueryResult(const MediaQueryExp& expr, bool result) + : m_expression(expr) + , m_result(result) + { + } + + MediaQueryExp m_expression; + bool m_result; +}; + + // This class selects a RenderStyle for a given element based on a collection of stylesheets. + class CSSStyleSelector : Noncopyable { + public: + CSSStyleSelector(Document*, const String& userStyleSheet, StyleSheetList*, CSSStyleSheet*, bool strictParsing, bool matchAuthorAndUserStyles); + ~CSSStyleSelector(); + + void initElementAndPseudoState(Element*); + void initForStyleResolve(Element*, RenderStyle* parentStyle = 0, RenderStyle::PseudoId = RenderStyle::NOPSEUDO); + PassRefPtr<RenderStyle> styleForElement(Element*, RenderStyle* parentStyle = 0, bool allowSharing = true, bool resolveForRootDefault = false); + void keyframeStylesForAnimation(Element*, const RenderStyle*, KeyframeList& list); + + PassRefPtr<RenderStyle> pseudoStyleForElement(RenderStyle::PseudoId, Element*, RenderStyle* parentStyle = 0); + + private: + RenderStyle* locateSharedStyle(); + Node* locateCousinList(Element* parent, unsigned depth = 1); + bool canShareStyleWithElement(Node*); + + RenderStyle* style() const { return m_style.get(); } + + public: + // These methods will give back the set of rules that matched for a given element (or a pseudo-element). + PassRefPtr<CSSRuleList> styleRulesForElement(Element*, bool authorOnly); + PassRefPtr<CSSRuleList> pseudoStyleRulesForElement(Element*, const String& pseudoStyle, bool authorOnly); + + // Given a CSS keyword in the range (xx-small to -webkit-xxx-large), this function will return + // the correct font size scaled relative to the user's default (medium). + float fontSizeForKeyword(int keyword, bool quirksMode, bool monospace) const; + + private: + // When the CSS keyword "larger" is used, this function will attempt to match within the keyword + // table, and failing that, will simply multiply by 1.2. + float largerFontSize(float size, bool quirksMode) const; + + // Like the previous function, but for the keyword "smaller". + float smallerFontSize(float size, bool quirksMode) const; + + public: + void setStyle(PassRefPtr<RenderStyle> s) { m_style = s; } // Used by the document when setting up its root style. + void setFontSize(FontDescription&, float size); + + void applyPropertyToStyle(int id, CSSValue*, RenderStyle*); + + private: + float getComputedSizeFromSpecifiedSize(bool isAbsoluteSize, float specifiedSize); + + public: + Color getColorFromPrimitiveValue(CSSPrimitiveValue*); + + bool hasSelectorForAttribute(const AtomicString&); + + CSSFontSelector* fontSelector() { return m_fontSelector.get(); } + + // Checks if a compound selector (which can consist of multiple simple selectors) matches the current element. + bool checkSelector(CSSSelector*); + + void addViewportDependentMediaQueryResult(const MediaQueryExp*, bool result); + + bool affectedByViewportChange() const; + + void allVisitedStateChanged() { m_checker.allVisitedStateChanged(); } + void visitedStateChanged(LinkHash visitedHash) { m_checker.visitedStateChanged(visitedHash); } + + void addVariables(CSSVariablesRule* variables); + CSSValue* resolveVariableDependentValue(CSSVariableDependentValue*); + void resolveVariablesForDeclaration(CSSMutableStyleDeclaration* decl, CSSMutableStyleDeclaration* newDecl, HashSet<String>& usedBlockVariables); + + void addKeyframeStyle(PassRefPtr<WebKitCSSKeyframesRule> rule); + + static bool createTransformOperations(CSSValue* inValue, RenderStyle* inStyle, TransformOperations& outOperations); + + private: + enum SelectorMatch { SelectorMatches, SelectorFailsLocally, SelectorFailsCompletely }; + + // This function fixes up the default font size if it detects that the current generic font family has changed. -dwh + void checkForGenericFamilyChange(RenderStyle*, RenderStyle* parentStyle); + void checkForZoomChange(RenderStyle*, RenderStyle* parentStyle); + void checkForTextSizeAdjust(); + + void adjustRenderStyle(RenderStyle*, Element*); + + void addMatchedRule(CSSRuleData* rule) { m_matchedRules.append(rule); } + void addMatchedDeclaration(CSSMutableStyleDeclaration* decl); + + void matchRules(CSSRuleSet*, int& firstRuleIndex, int& lastRuleIndex); + void matchRulesForList(CSSRuleDataList*, int& firstRuleIndex, int& lastRuleIndex); + void sortMatchedRules(unsigned start, unsigned end); + + void applyDeclarations(bool firstPass, bool important, int startIndex, int endIndex); + + CSSRuleSet* m_authorStyle; + CSSRuleSet* m_userStyle; + RefPtr<CSSStyleSheet> m_userSheet; + + bool m_hasUAAppearance; + BorderData m_borderData; + FillLayer m_backgroundData; + Color m_backgroundColor; + + typedef HashMap<AtomicStringImpl*, RefPtr<WebKitCSSKeyframesRule> > KeyframesRuleMap; + KeyframesRuleMap m_keyframesRuleMap; + + public: + static RenderStyle* styleNotYetAvailable() { return s_styleNotYetAvailable; } + + class SelectorChecker : public Noncopyable { + public: + SelectorChecker(Document*, bool strictParsing); + + bool checkSelector(CSSSelector*, Element*) const; + SelectorMatch checkSelector(CSSSelector*, Element*, HashSet<AtomicStringImpl*>* selectorAttrs, RenderStyle::PseudoId& dynamicPseudo, bool isAncestor, bool isSubSelector, RenderStyle* = 0, RenderStyle* elementParentStyle = 0) const; + bool checkOneSelector(CSSSelector*, Element*, HashSet<AtomicStringImpl*>* selectorAttrs, RenderStyle::PseudoId& dynamicPseudo, bool isAncestor, bool isSubSelector, RenderStyle*, RenderStyle* elementParentStyle) const; + PseudoState checkPseudoState(Element*, bool checkVisited = true) const; + bool checkScrollbarPseudoClass(CSSSelector*, RenderStyle::PseudoId& dynamicPseudo) const; + + void allVisitedStateChanged(); + void visitedStateChanged(LinkHash visitedHash); + + Document* m_document; + bool m_strictParsing; + bool m_collectRulesOnly; + RenderStyle::PseudoId m_pseudoStyle; + bool m_documentIsHTML; + mutable HashSet<LinkHash, LinkHashHash> m_linksCheckedForVisitedState; + }; + + private: + static RenderStyle* s_styleNotYetAvailable; + + void init(); + + void matchUARules(int& firstUARule, int& lastUARule); + void updateFont(); + void cacheBorderAndBackground(); + + void mapFillAttachment(FillLayer*, CSSValue*); + void mapFillClip(FillLayer*, CSSValue*); + void mapFillComposite(FillLayer*, CSSValue*); + void mapFillOrigin(FillLayer*, CSSValue*); + void mapFillImage(FillLayer*, CSSValue*); + void mapFillRepeat(FillLayer*, CSSValue*); + void mapFillSize(FillLayer*, CSSValue*); + void mapFillXPosition(FillLayer*, CSSValue*); + void mapFillYPosition(FillLayer*, CSSValue*); + + void mapAnimationDelay(Animation*, CSSValue*); + void mapAnimationDirection(Animation*, CSSValue*); + void mapAnimationDuration(Animation*, CSSValue*); + void mapAnimationIterationCount(Animation*, CSSValue*); + void mapAnimationName(Animation*, CSSValue*); + void mapAnimationPlayState(Animation*, CSSValue*); + void mapAnimationProperty(Animation*, CSSValue*); + void mapAnimationTimingFunction(Animation*, CSSValue*); + + void mapNinePieceImage(CSSValue*, NinePieceImage&); + + void applyProperty(int id, CSSValue*); +#if ENABLE(SVG) + void applySVGProperty(int id, CSSValue*); +#endif + + StyleImage* styleImage(CSSValue* value); + + // We collect the set of decls that match in |m_matchedDecls|. We then walk the + // set of matched decls four times, once for those properties that others depend on (like font-size), + // and then a second time for all the remaining properties. We then do the same two passes + // for any !important rules. + Vector<CSSMutableStyleDeclaration*> m_matchedDecls; + + // A buffer used to hold the set of matched rules for an element, and a temporary buffer used for + // merge sorting. + Vector<CSSRuleData*> m_matchedRules; + + RefPtr<CSSRuleList> m_ruleList; + + MediaQueryEvaluator* m_medium; + RefPtr<RenderStyle> m_rootDefaultStyle; + + RenderStyle::PseudoId m_dynamicPseudo; + + SelectorChecker m_checker; + + RefPtr<RenderStyle> m_style; + RenderStyle* m_parentStyle; + Element* m_element; + StyledElement* m_styledElement; + Node* m_parentNode; + CSSValue* m_lineHeightValue; + bool m_fontDirty; + bool m_matchAuthorAndUserStyles; + + RefPtr<CSSFontSelector> m_fontSelector; + HashSet<AtomicStringImpl*> m_selectorAttrs; + Vector<CSSMutableStyleDeclaration*> m_additionalAttributeStyleDecls; + Vector<MediaQueryResult*> m_viewportDependentMediaQueryResults; + + HashMap<String, CSSVariablesRule*> m_variablesMap; + HashMap<CSSMutableStyleDeclaration*, RefPtr<CSSMutableStyleDeclaration> > m_resolvedVariablesDeclarations; + }; + + class CSSRuleData { + public: + CSSRuleData(unsigned pos, CSSStyleRule* r, CSSSelector* sel, CSSRuleData* prev = 0) + : m_position(pos) + , m_rule(r) + , m_selector(sel) + , m_next(0) + { + if (prev) + prev->m_next = this; + } + + ~CSSRuleData() { delete m_next; } + + unsigned position() { return m_position; } + CSSStyleRule* rule() { return m_rule; } + CSSSelector* selector() { return m_selector; } + CSSRuleData* next() { return m_next; } + + private: + unsigned m_position; + CSSStyleRule* m_rule; + CSSSelector* m_selector; + CSSRuleData* m_next; + }; + + class CSSRuleDataList { + public: + CSSRuleDataList(unsigned pos, CSSStyleRule* rule, CSSSelector* sel) + : m_first(new CSSRuleData(pos, rule, sel)) + , m_last(m_first) + { + } + + ~CSSRuleDataList() { delete m_first; } + + CSSRuleData* first() { return m_first; } + CSSRuleData* last() { return m_last; } + + void append(unsigned pos, CSSStyleRule* rule, CSSSelector* sel) { m_last = new CSSRuleData(pos, rule, sel, m_last); } + + private: + CSSRuleData* m_first; + CSSRuleData* m_last; + }; + +} // namespace WebCore + +#endif // CSSStyleSelector_h |