1/* 2 * Copyright (C) 2004 Zack Rusin <zack@kde.org> 3 * Copyright (C) 2004, 2005, 2006, 2008, 2012, 2013 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 "CSSStyleDeclaration.h" 25#include "RenderStyleConstants.h" 26#include <wtf/RefPtr.h> 27#include <wtf/text/WTFString.h> 28 29namespace WebCore { 30 31class CSSPrimitiveValue; 32class CSSValueList; 33class Color; 34class MutableStylePropertySet; 35class Node; 36class RenderObject; 37class RenderStyle; 38class SVGPaint; 39class ShadowData; 40class StylePropertySet; 41class StylePropertyShorthand; 42 43#if ENABLE(CSS_SHADERS) 44class CustomFilterNumberParameter; 45class CustomFilterParameter; 46#endif 47 48enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true }; 49 50class ComputedStyleExtractor { 51public: 52 ComputedStyleExtractor(PassRefPtr<Node>, bool allowVisitedStyle = false, PseudoId = NOPSEUDO); 53 54 PassRefPtr<CSSValue> propertyValue(CSSPropertyID, EUpdateLayout = UpdateLayout) const; 55 56 // Helper methods for HTML editing. 57 PassRefPtr<MutableStylePropertySet> copyPropertiesInSet(const CSSPropertyID* set, unsigned length) const; 58 PassRefPtr<MutableStylePropertySet> copyProperties() const; 59 PassRefPtr<CSSPrimitiveValue> getFontSizeCSSValuePreferringKeyword() const; 60 bool useFixedFontDefaultSize() const; 61 bool propertyMatches(CSSPropertyID, const CSSValue*) const; 62 63private: 64 // The styled node is either the node passed into computedPropertyValue, or the 65 // PseudoElement for :before and :after if they exist. 66 // FIXME: This should be styledElement since in JS getComputedStyle only works 67 // on Elements, but right now editing creates these for text nodes. We should fix that. 68 Node* styledNode() const; 69 70#if ENABLE(SVG) 71 PassRefPtr<CSSValue> svgPropertyValue(CSSPropertyID, EUpdateLayout) const; 72 PassRefPtr<SVGPaint> adjustSVGPaintForCurrentColor(PassRefPtr<SVGPaint>, RenderStyle*) const; 73#endif 74 75 PassRefPtr<CSSValue> valueForShadow(const ShadowData*, CSSPropertyID, const RenderStyle*) const; 76 PassRefPtr<CSSPrimitiveValue> currentColorOrValidColor(RenderStyle*, const Color&) const; 77 78#if ENABLE(CSS_FILTERS) 79 PassRefPtr<CSSValue> valueForFilter(const RenderObject*, const RenderStyle*) const; 80#endif 81 82 PassRefPtr<CSSValueList> getCSSPropertyValuesForShorthandProperties(const StylePropertyShorthand&) const; 83 PassRefPtr<CSSValueList> getCSSPropertyValuesForSidesShorthand(const StylePropertyShorthand&) const; 84 PassRefPtr<CSSValueList> getBackgroundShorthandValue() const; 85 PassRefPtr<CSSValueList> getCSSPropertyValuesForGridShorthand(const StylePropertyShorthand&) const; 86 87 RefPtr<Node> m_node; 88 PseudoId m_pseudoElementSpecifier; 89 bool m_allowVisitedStyle; 90}; 91 92class CSSComputedStyleDeclaration : public CSSStyleDeclaration { 93public: 94 static PassRefPtr<CSSComputedStyleDeclaration> create(PassRefPtr<Node> node, bool allowVisitedStyle = false, const String& pseudoElementName = String()) 95 { 96 return adoptRef(new CSSComputedStyleDeclaration(node, allowVisitedStyle, pseudoElementName)); 97 } 98 virtual ~CSSComputedStyleDeclaration(); 99 100 virtual void ref() OVERRIDE; 101 virtual void deref() OVERRIDE; 102 103 String getPropertyValue(CSSPropertyID) const; 104 105private: 106 CSSComputedStyleDeclaration(PassRefPtr<Node>, bool allowVisitedStyle, const String&); 107 108 // CSSOM functions. Don't make these public. 109 virtual CSSRule* parentRule() const; 110 virtual unsigned length() const; 111 virtual String item(unsigned index) const; 112 virtual PassRefPtr<CSSValue> getPropertyCSSValue(const String& propertyName); 113 virtual String getPropertyValue(const String& propertyName); 114 virtual String getPropertyPriority(const String& propertyName); 115 virtual String getPropertyShorthand(const String& propertyName); 116 virtual bool isPropertyImplicit(const String& propertyName); 117 virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionCode&); 118 virtual String removeProperty(const String& propertyName, ExceptionCode&); 119 virtual String cssText() const; 120 virtual void setCssText(const String&, ExceptionCode&); 121 virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID); 122 virtual String getPropertyValueInternal(CSSPropertyID); 123 virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionCode&); 124 virtual PassRefPtr<MutableStylePropertySet> copyProperties() const OVERRIDE; 125 126 PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID, EUpdateLayout = UpdateLayout) const; 127 128 RefPtr<Node> m_node; 129 PseudoId m_pseudoElementSpecifier; 130 bool m_allowVisitedStyle; 131 unsigned m_refCount; 132}; 133 134} // namespace WebCore 135 136#endif // CSSComputedStyleDeclaration_h 137