author | Pat Downey <patrick.downey@nokia.com> |
Fri, 03 Jul 2009 15:54:40 +0100 | |
changeset 13 | 10e98eab6f85 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
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/* |
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* This file is part of the CSS implementation for KDE. |
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* |
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
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* Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public License |
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* along with this library; see the file COPYING.LIB. If not, write to |
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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* Boston, MA 02110-1301, USA. |
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* |
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*/ |
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|
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#ifndef CSSStyleSelector_h |
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#define CSSStyleSelector_h |
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#include "config.h" |
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#include "DeprecatedString.h" |
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#include "RenderStyle.h" |
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#include <wtf/HashSet.h> |
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#include <wtf/Vector.h> |
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namespace WebCore { |
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class CSSMutableStyleDeclaration; |
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class CSSPrimitiveValue; |
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class CSSProperty; |
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class CSSRuleData; |
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class CSSRuleDataList; |
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class CSSRuleList; |
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class CSSRuleSet; |
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class CSSSelector; |
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class CSSStyleRule; |
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class CSSStyleSheet; |
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class CSSValue; |
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class Document; |
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class Element; |
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class Frame; |
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class FrameView; |
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class KURL; |
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class MediaQueryEvaluator; |
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class Node; |
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class Settings; |
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class StyleSheet; |
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class StyleSheetList; |
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class StyledElement; |
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|
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/** |
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* this class selects a RenderStyle for a given Element based on the |
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* collection of styleshets it contains. This is just a vrtual base class |
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* for specific implementations of the Selector. At the moment only CSSStyleSelector |
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* exists, but someone may wish to implement XSL. |
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*/ |
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class StyleSelector |
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{ |
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public: |
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enum State { |
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None = 0x00, |
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Hover = 0x01, |
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Focus = 0x02, |
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Active = 0x04, |
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Drag = 0x08 |
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}; |
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}; |
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/** |
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* the StyleSelector implementation for CSS. |
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*/ |
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class CSSStyleSelector : public StyleSelector |
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{ |
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public: |
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/** |
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* creates a new StyleSelector for a Document. |
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* goes through all StyleSheets defined in the document and |
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* creates a list of rules it needs to apply to objects |
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*/ |
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CSSStyleSelector(Document*, const String& userStyleSheet, StyleSheetList *styleSheets, bool strictParsing); |
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/** |
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* same as above but for a single stylesheet. |
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*/ |
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CSSStyleSelector(CSSStyleSheet *sheet); |
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~CSSStyleSelector(); |
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static void loadDefaultStyle(); |
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#if PLATFORM(SYMBIAN) |
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static void deleteDefaultStyle(); |
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#endif |
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void initElementAndPseudoState(Element* e); |
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void initForStyleResolve(Element* e, RenderStyle* parentStyle); |
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RenderStyle *styleForElement(Element*, RenderStyle* parentStyle=0, bool allowSharing=true, bool resolveForRootDefault=false); |
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RenderStyle* pseudoStyleForElement(RenderStyle::PseudoId, Element*, RenderStyle* parentStyle=0); |
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RenderStyle* locateSharedStyle(); |
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Node* locateCousinList(Element* parent, unsigned depth = 1); |
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bool canShareStyleWithElement(Node* n); |
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// These methods will give back the set of rules that matched for a given element (or a pseudo-element). |
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RefPtr<CSSRuleList> styleRulesForElement(Element* e, bool authorOnly); |
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RefPtr<CSSRuleList> pseudoStyleRulesForElement(Element* e, StringImpl* pseudoStyle, bool authorOnly); |
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bool strictParsing; |
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struct Encodedurl { |
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DeprecatedString host; //also contains protocol |
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DeprecatedString path; |
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DeprecatedString file; |
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} encodedurl; |
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void setEncodedURL(const KURL& url); |
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// Given a CSS keyword in the range (xx-small to -webkit-xxx-large), this function will return |
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// the correct font size scaled relative to the user's default (medium). |
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float fontSizeForKeyword(int keyword, bool quirksMode, bool monospace) const; |
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// When the CSS keyword "larger" is used, this function will attempt to match within the keyword |
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// table, and failing that, will simply multiply by 1.2. |
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float largerFontSize(float size, bool quirksMode) const; |
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// Like the previous function, but for the keyword "smaller". |
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float smallerFontSize(float size, bool quirksMode) const; |
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void setFontSize(FontDescription& FontDescription, float size); |
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float getComputedSizeFromSpecifiedSize(bool isAbsoluteSize, float specifiedSize); |
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Color getColorFromPrimitiveValue(CSSPrimitiveValue* primitiveValue); |
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bool hasSelectorForAttribute(const AtomicString &attrname); |
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protected: |
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/* checks if a compound selector (which can consist of multiple simple selectors) |
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matches the given Element */ |
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bool checkSelector(CSSSelector* selector, Element *e); |
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/* checks if the selector matches the given Element */ |
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bool checkOneSelector(CSSSelector*, Element*, bool isSubSelector = false); |
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/* This function fixes up the default font size if it detects that the |
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current generic font family has changed. -dwh */ |
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void checkForGenericFamilyChange(RenderStyle* aStyle, RenderStyle* aParentStyle); |
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void checkForTextSizeAdjust(); |
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void adjustRenderStyle(RenderStyle* style, Element *e); |
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void addMatchedRule(CSSRuleData* rule) { m_matchedRules.append(rule); } |
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void addMatchedDeclaration(CSSMutableStyleDeclaration* decl) { m_matchedDecls.append(decl); } |
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void matchRules(CSSRuleSet* rules, int& firstRuleIndex, int& lastRuleIndex); |
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void matchRulesForList(CSSRuleDataList* rules, int& firstRuleIndex, int& lastRuleIndex); |
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void sortMatchedRules(unsigned start, unsigned end); |
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void applyDeclarations(bool firstPass, bool important, int startIndex, int endIndex); |
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static CSSStyleSheet* defaultSheet; |
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static CSSStyleSheet* quirksSheet; |
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static CSSStyleSheet* viewSourceSheet; |
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#if ENABLE(SVG) |
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static CSSStyleSheet* svgSheet; |
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#endif |
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static CSSRuleSet* defaultStyle; |
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static CSSRuleSet* defaultQuirksStyle; |
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static CSSRuleSet* defaultPrintStyle; |
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static CSSRuleSet* defaultViewSourceStyle; |
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CSSRuleSet* m_authorStyle; |
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CSSRuleSet* m_userStyle; |
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RefPtr<CSSStyleSheet> m_userSheet; |
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bool m_hasUAAppearance; |
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BorderData m_borderData; |
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BackgroundLayer m_backgroundData; |
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Color m_backgroundColor; |
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public: |
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static RenderStyle* styleNotYetAvailable; |
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private: |
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void init(); |
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void matchUARules(int& firstUARule, int& lastUARule); |
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void updateFont(); |
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void cacheBorderAndBackground(); |
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void mapBackgroundAttachment(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundClip(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundComposite(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundOrigin(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundImage(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundRepeat(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundSize(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundXPosition(BackgroundLayer* layer, CSSValue* value); |
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void mapBackgroundYPosition(BackgroundLayer* layer, CSSValue* value); |
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// We collect the set of decls that match in |m_matchedDecls|. We then walk the |
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// set of matched decls four times, once for those properties that others depend on (like font-size), |
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// and then a second time for all the remaining properties. We then do the same two passes |
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// for any !important rules. |
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Vector<CSSMutableStyleDeclaration*> m_matchedDecls; |
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// A buffer used to hold the set of matched rules for an element, and a temporary buffer used for |
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// merge sorting. |
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Vector<CSSRuleData*> m_matchedRules; |
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CSSRuleList* m_ruleList; |
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bool m_collectRulesOnly; |
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MediaQueryEvaluator* m_medium; |
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RenderStyle* m_rootDefaultStyle; |
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RenderStyle::PseudoId dynamicPseudo; |
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Document* m_document; // back pointer to owner document |
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RenderStyle *style; |
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RenderStyle *parentStyle; |
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Element *element; |
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StyledElement *styledElement; |
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Node *parentNode; |
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RenderStyle::PseudoId pseudoStyle; |
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CSSValue* m_lineHeightValue; |
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bool fontDirty; |
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bool isXMLDoc; |
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HashSet<AtomicStringImpl *> m_selectorAttrs; |
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void applyProperty(int id, CSSValue *value); |
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#if ENABLE(SVG) |
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void applySVGProperty(int id, CSSValue *value); |
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#endif |
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}; |
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class CSSRuleData { |
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public: |
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CSSRuleData(unsigned pos, CSSStyleRule* r, CSSSelector* sel, CSSRuleData* prev = 0) |
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:m_position(pos), m_rule(r), m_selector(sel), m_next(0) { if (prev) prev->m_next = this; } |
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~CSSRuleData() { delete m_next; } |
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unsigned position() { return m_position; } |
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CSSStyleRule* rule() { return m_rule; } |
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CSSSelector* selector() { return m_selector; } |
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CSSRuleData* next() { return m_next; } |
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private: |
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unsigned m_position; |
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CSSStyleRule* m_rule; |
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CSSSelector* m_selector; |
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CSSRuleData* m_next; |
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}; |
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class CSSRuleDataList { |
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public: |
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CSSRuleDataList(unsigned pos, CSSStyleRule* rule, CSSSelector* sel) |
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{ m_first = m_last = new CSSRuleData(pos, rule, sel); } |
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~CSSRuleDataList() { delete m_first; } |
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CSSRuleData* first() { return m_first; } |
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CSSRuleData* last() { return m_last; } |
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void append(unsigned pos, CSSStyleRule* rule, CSSSelector* sel) { |
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m_last = new CSSRuleData(pos, rule, sel, m_last); |
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} |
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private: |
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CSSRuleData* m_first; |
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CSSRuleData* m_last; |
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}; |
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} // WebCore |
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#endif // CSSStyleSelector_h |