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/*
* Copyright (C) 2004 Zack Rusin <zack@kde.org>
* Copyright (C) 2004, 2005, 2006, 2008, 2012, 2013 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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 "CSSStyleDeclaration.h"
#include "RenderStyleConstants.h"
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSPrimitiveValue;
class CSSValueList;
class Color;
class MutableStylePropertySet;
class Node;
class RenderObject;
class RenderStyle;
class SVGPaint;
class ShadowData;
class StylePropertySet;
class StylePropertyShorthand;
#if ENABLE(CSS_SHADERS)
class CustomFilterNumberParameter;
class CustomFilterParameter;
#endif
enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
class ComputedStyleExtractor {
public:
ComputedStyleExtractor(PassRefPtr<Node>, bool allowVisitedStyle = false, PseudoId = NOPSEUDO);
PassRefPtr<CSSValue> propertyValue(CSSPropertyID, EUpdateLayout = UpdateLayout) const;
// Helper methods for HTML editing.
PassRefPtr<MutableStylePropertySet> copyPropertiesInSet(const CSSPropertyID* set, unsigned length) const;
PassRefPtr<MutableStylePropertySet> copyProperties() const;
PassRefPtr<CSSPrimitiveValue> getFontSizeCSSValuePreferringKeyword() const;
bool useFixedFontDefaultSize() const;
bool propertyMatches(CSSPropertyID, const CSSValue*) const;
private:
// The styled node is either the node passed into computedPropertyValue, 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;
#if ENABLE(SVG)
PassRefPtr<CSSValue> svgPropertyValue(CSSPropertyID, EUpdateLayout) const;
PassRefPtr<SVGPaint> adjustSVGPaintForCurrentColor(PassRefPtr<SVGPaint>, RenderStyle*) const;
#endif
PassRefPtr<CSSValue> valueForShadow(const ShadowData*, CSSPropertyID, const RenderStyle*) const;
PassRefPtr<CSSPrimitiveValue> currentColorOrValidColor(RenderStyle*, const Color&) const;
#if ENABLE(CSS_FILTERS)
PassRefPtr<CSSValue> valueForFilter(const RenderObject*, const RenderStyle*) const;
#endif
PassRefPtr<CSSValueList> getCSSPropertyValuesForShorthandProperties(const StylePropertyShorthand&) const;
PassRefPtr<CSSValueList> getCSSPropertyValuesForSidesShorthand(const StylePropertyShorthand&) const;
PassRefPtr<CSSValueList> getBackgroundShorthandValue() const;
PassRefPtr<CSSValueList> getCSSPropertyValuesForGridShorthand(const StylePropertyShorthand&) const;
RefPtr<Node> m_node;
PseudoId m_pseudoElementSpecifier;
bool m_allowVisitedStyle;
};
class CSSComputedStyleDeclaration : public CSSStyleDeclaration {
public:
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;
String getPropertyValue(CSSPropertyID) const;
private:
CSSComputedStyleDeclaration(PassRefPtr<Node>, bool allowVisitedStyle, const String&);
// CSSOM functions. Don't make these public.
virtual CSSRule* parentRule() const;
virtual unsigned length() const;
virtual String item(unsigned index) 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, ExceptionCode&);
virtual String removeProperty(const String& propertyName, ExceptionCode&);
virtual String cssText() const;
virtual void setCssText(const String&, ExceptionCode&);
virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID);
virtual String getPropertyValueInternal(CSSPropertyID);
virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionCode&);
virtual PassRefPtr<MutableStylePropertySet> copyProperties() const OVERRIDE;
PassRefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID, EUpdateLayout = UpdateLayout) const;
RefPtr<Node> m_node;
PseudoId m_pseudoElementSpecifier;
bool m_allowVisitedStyle;
unsigned m_refCount;
};
} // namespace WebCore
#endif // CSSComputedStyleDeclaration_h
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