1/* 2 * Copyright (C) 2004 Zack Rusin <zack@kde.org> 3 * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 */ 20 21#ifndef CSSComputedStyleDeclaration_h 22#define CSSComputedStyleDeclaration_h 23 24#include "core/css/CSSStyleDeclaration.h" 25#include "core/rendering/style/RenderStyleConstants.h" 26#include "wtf/HashMap.h" 27#include "wtf/RefPtr.h" 28#include "wtf/text/AtomicString.h" 29#include "wtf/text/AtomicStringHash.h" 30#include "wtf/text/WTFString.h" 31 32namespace WebCore { 33 34class CSSPrimitiveValue; 35class CSSValueList; 36class Color; 37class CustomFilterNumberParameter; 38class CustomFilterParameter; 39class ExceptionState; 40class MutableStylePropertySet; 41class Node; 42class RenderObject; 43class RenderStyle; 44class SVGPaint; 45class ShadowData; 46class ShadowList; 47class StylePropertySet; 48class StylePropertyShorthand; 49 50enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true }; 51 52class CSSComputedStyleDeclaration : public CSSStyleDeclaration { 53private: 54 class ComputedCSSVariablesIterator : public CSSVariablesIterator { 55 public: 56 virtual ~ComputedCSSVariablesIterator() { } 57 static PassRefPtr<ComputedCSSVariablesIterator> create(const HashMap<AtomicString, String>* variableMap) { return adoptRef(new ComputedCSSVariablesIterator(variableMap)); } 58 private: 59 explicit ComputedCSSVariablesIterator(const HashMap<AtomicString, String>* variableMap); 60 virtual void advance() OVERRIDE; 61 virtual bool atEnd() const OVERRIDE { return m_it == m_end; } 62 virtual AtomicString name() const OVERRIDE; 63 virtual String value() const OVERRIDE; 64 bool m_active; 65 typedef HashMap<AtomicString, String>::const_iterator VariablesMapIterator; 66 VariablesMapIterator m_it; 67 VariablesMapIterator m_end; 68 }; 69 70public: 71 static PassRefPtr<CSSComputedStyleDeclaration> create(PassRefPtr<Node> node, bool allowVisitedStyle = false, const String& pseudoElementName = String()) 72 { 73 return adoptRef(new CSSComputedStyleDeclaration(node, allowVisitedStyle, pseudoElementName)); 74 } 75 virtual ~CSSComputedStyleDeclaration(); 76 77 virtual void ref() OVERRIDE; 78 virtual void deref() OVERRIDE; 79 80 PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID) const; 81 String getPropertyValue(CSSPropertyID) const; 82 bool getPropertyPriority(CSSPropertyID) const; 83 84 virtual PassRefPtr<MutableStylePropertySet> copyProperties() const OVERRIDE; 85 86 PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID, EUpdateLayout) const; 87 PassRefPtr<CSSValue> getFontSizeCSSValuePreferringKeyword() const; 88 bool useFixedFontDefaultSize() const; 89 PassRefPtr<CSSValue> getSVGPropertyCSSValue(CSSPropertyID, EUpdateLayout) const; 90 91 PassRefPtr<MutableStylePropertySet> copyPropertiesInSet(const Vector<CSSPropertyID>&) const; 92 93private: 94 CSSComputedStyleDeclaration(PassRefPtr<Node>, bool allowVisitedStyle, const String&); 95 96 // The styled node is either the node passed into getComputedStyle, or the 97 // PseudoElement for :before and :after if they exist. 98 // FIXME: This should be styledElement since in JS getComputedStyle only works 99 // on Elements, but right now editing creates these for text nodes. We should fix 100 // that. 101 Node* styledNode() const; 102 103 // CSSOM functions. Don't make these public. 104 virtual CSSRule* parentRule() const; 105 virtual unsigned length() const; 106 virtual String item(unsigned index) const; 107 PassRefPtr<RenderStyle> computeRenderStyle(CSSPropertyID) const; 108 virtual PassRefPtr<CSSValue> getPropertyCSSValue(const String& propertyName); 109 virtual String getPropertyValue(const String& propertyName); 110 virtual String getPropertyPriority(const String& propertyName); 111 virtual String getPropertyShorthand(const String& propertyName); 112 virtual bool isPropertyImplicit(const String& propertyName); 113 virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState&); 114 virtual String removeProperty(const String& propertyName, ExceptionState&); 115 virtual String cssText() const; 116 virtual void setCSSText(const String&, ExceptionState&); 117 virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID); 118 virtual String getPropertyValueInternal(CSSPropertyID); 119 virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&); 120 121 const HashMap<AtomicString, String>* variableMap() const; 122 virtual unsigned variableCount() const OVERRIDE; 123 virtual String variableValue(const AtomicString& name) const OVERRIDE; 124 virtual bool setVariableValue(const AtomicString& name, const String& value, ExceptionState&) OVERRIDE; 125 virtual bool removeVariable(const AtomicString& name) OVERRIDE; 126 virtual bool clearVariables(ExceptionState&) OVERRIDE; 127 virtual PassRefPtr<CSSVariablesIterator> variablesIterator() const OVERRIDE { return ComputedCSSVariablesIterator::create(variableMap()); } 128 129 virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE; 130 131 PassRefPtr<CSSValue> valueForShadowData(const ShadowData&, const RenderStyle&, bool useSpread) const; 132 PassRefPtr<CSSValue> valueForShadowList(const ShadowList*, const RenderStyle&, bool useSpread) const; 133 PassRefPtr<CSSPrimitiveValue> currentColorOrValidColor(const RenderStyle&, const Color&) const; 134 PassRefPtr<SVGPaint> adjustSVGPaintForCurrentColor(PassRefPtr<SVGPaint>, RenderStyle&) const; 135 136 PassRefPtr<CSSValue> valueForFilter(const RenderObject*, const RenderStyle&) const; 137 138 PassRefPtr<CSSValueList> valuesForShorthandProperty(const StylePropertyShorthand&) const; 139 PassRefPtr<CSSValueList> valuesForSidesShorthand(const StylePropertyShorthand&) const; 140 PassRefPtr<CSSValueList> valuesForBackgroundShorthand() const; 141 PassRefPtr<CSSValueList> valuesForGridShorthand(const StylePropertyShorthand&) const; 142 143 RefPtr<Node> m_node; 144 PseudoId m_pseudoElementSpecifier; 145 bool m_allowVisitedStyle; 146 unsigned m_refCount; 147}; 148 149} // namespace WebCore 150 151#endif // CSSComputedStyleDeclaration_h 152