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* Copyright (C) 2004 Zack Rusin <>
* Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
#ifndef CSSComputedStyleDeclaration_h
#define CSSComputedStyleDeclaration_h
#include "core/css/CSSStyleDeclaration.h"
#include "core/rendering/style/RenderStyleConstants.h"
#include "wtf/HashMap.h"
#include "wtf/RefPtr.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/AtomicStringHash.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
class CSSPrimitiveValue;
class CSSValueList;
class Color;
class CustomFilterNumberParameter;
class CustomFilterParameter;
class ExceptionState;
class MutableStylePropertySet;
class Node;
class RenderObject;
class RenderStyle;
class SVGPaint;
class ShadowData;
class ShadowList;
class StylePropertySet;
class StylePropertyShorthand;
enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
class CSSComputedStyleDeclaration : public CSSStyleDeclaration {
class ComputedCSSVariablesIterator : public CSSVariablesIterator {
virtual ~ComputedCSSVariablesIterator() { }
static PassRefPtr<ComputedCSSVariablesIterator> create(const HashMap<AtomicString, String>* variableMap) { return adoptRef(new ComputedCSSVariablesIterator(variableMap)); }
explicit ComputedCSSVariablesIterator(const HashMap<AtomicString, String>* variableMap);
virtual void advance() OVERRIDE;
virtual bool atEnd() const OVERRIDE { return m_it == m_end; }
virtual AtomicString name() const OVERRIDE;
virtual String value() const OVERRIDE;
bool m_active;
typedef HashMap<AtomicString, String>::const_iterator VariablesMapIterator;
VariablesMapIterator m_it;
VariablesMapIterator m_end;
static PassRefPtr<CSSComputedStyleDeclaration> create(PassRefPtr<Node> node, bool allowVisitedStyle = false, const String& pseudoElementName = String())
return adoptRef(new CSSComputedStyleDeclaration(node, allowVisitedStyle, pseudoElementName));
virtual ~CSSComputedStyleDeclaration();
virtual void ref() OVERRIDE;
virtual void deref() OVERRIDE;
PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID) const;
String getPropertyValue(CSSPropertyID) const;
bool getPropertyPriority(CSSPropertyID) const;
virtual PassRefPtr<MutableStylePropertySet> copyProperties() const OVERRIDE;
PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID, EUpdateLayout) const;
PassRefPtr<CSSValue> getFontSizeCSSValuePreferringKeyword() const;
bool useFixedFontDefaultSize() const;
PassRefPtr<CSSValue> getSVGPropertyCSSValue(CSSPropertyID, EUpdateLayout) const;
PassRefPtr<MutableStylePropertySet> copyPropertiesInSet(const Vector<CSSPropertyID>&) const;
CSSComputedStyleDeclaration(PassRefPtr<Node>, bool allowVisitedStyle, const String&);
// The styled node is either the node passed into getComputedStyle, or the
// PseudoElement for :before and :after if they exist.
// FIXME: This should be styledElement since in JS getComputedStyle only works
// on Elements, but right now editing creates these for text nodes. We should fix
// that.
Node* styledNode() const;
// CSSOM functions. Don't make these public.
virtual CSSRule* parentRule() const;
virtual unsigned length() const;
virtual String item(unsigned index) const;
PassRefPtr<RenderStyle> computeRenderStyle(CSSPropertyID) const;
virtual PassRefPtr<CSSValue> getPropertyCSSValue(const String& propertyName);
virtual String getPropertyValue(const String& propertyName);
virtual String getPropertyPriority(const String& propertyName);
virtual String getPropertyShorthand(const String& propertyName);
virtual bool isPropertyImplicit(const String& propertyName);
virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState&);
virtual String removeProperty(const String& propertyName, ExceptionState&);
virtual String cssText() const;
virtual void setCSSText(const String&, ExceptionState&);
virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID);
virtual String getPropertyValueInternal(CSSPropertyID);
virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&);
const HashMap<AtomicString, String>* variableMap() const;
virtual unsigned variableCount() const OVERRIDE;
virtual String variableValue(const AtomicString& name) const OVERRIDE;
virtual bool setVariableValue(const AtomicString& name, const String& value, ExceptionState&) OVERRIDE;
virtual bool removeVariable(const AtomicString& name) OVERRIDE;
virtual bool clearVariables(ExceptionState&) OVERRIDE;
virtual PassRefPtr<CSSVariablesIterator> variablesIterator() const OVERRIDE { return ComputedCSSVariablesIterator::create(variableMap()); }
virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE;
PassRefPtr<CSSValue> valueForShadowData(const ShadowData&, const RenderStyle*, bool useSpread) const;
PassRefPtr<CSSValue> valueForShadowList(const ShadowList*, const RenderStyle*, bool useSpread) const;
PassRefPtr<CSSPrimitiveValue> currentColorOrValidColor(const RenderStyle*, const Color&) const;
PassRefPtr<SVGPaint> adjustSVGPaintForCurrentColor(PassRefPtr<SVGPaint>, RenderStyle*) const;
PassRefPtr<CSSValue> valueForFilter(const RenderObject*, const RenderStyle*) const;
PassRefPtr<CSSValueList> valuesForShorthandProperty(const StylePropertyShorthand&) const;
PassRefPtr<CSSValueList> valuesForSidesShorthand(const StylePropertyShorthand&) const;
PassRefPtr<CSSValueList> valuesForBackgroundShorthand() const;
PassRefPtr<CSSValueList> valuesForGridShorthand(const StylePropertyShorthand&) const;
RefPtr<Node> m_node;
PseudoId m_pseudoElementSpecifier;
bool m_allowVisitedStyle;
unsigned m_refCount;
} // namespace WebCore
#endif // CSSComputedStyleDeclaration_h