/*

 * Copyright (C) 2004 Zack Rusin <zack@kde.org>

 * Copyright (C) 2004, 2005, 2006, 2008 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 "PlatformString.h"

#include "RenderStyleConstants.h"

#include <wtf/RefPtr.h>

namespace WebCore {

class Color;

class CSSMutableStyleDeclaration;

class CSSPrimitiveValue;

class Node;

class RenderStyle;

class ShadowData;

enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };

class CSSComputedStyleDeclaration : public CSSStyleDeclaration {

public:

    friend PassRefPtr<CSSComputedStyleDeclaration> computedStyle(PassRefPtr<Node>, bool allowVisitedStyle, const String& pseudoElementName);

    virtual ~CSSComputedStyleDeclaration();

    virtual String cssText() const;

    virtual unsigned virtualLength() const;

    virtual String item(unsigned index) const;

    virtual PassRefPtr<CSSValue> getPropertyCSSValue(int propertyID) const;

    virtual String getPropertyValue(int propertyID) const;

    virtual bool getPropertyPriority(int propertyID) const;

    virtual int getPropertyShorthand(int /*propertyID*/) const { return -1; }

    virtual bool isPropertyImplicit(int /*propertyID*/) const { return false; }

    virtual PassRefPtr<CSSMutableStyleDeclaration> copy() const;

    virtual PassRefPtr<CSSMutableStyleDeclaration> makeMutable();

    PassRefPtr<CSSValue> getPropertyCSSValue(int propertyID, EUpdateLayout) const;

    PassRefPtr<CSSValue> getFontSizeCSSValuePreferringKeyword() const;

#if ENABLE(SVG)

    PassRefPtr<CSSValue> getSVGPropertyCSSValue(int propertyID, EUpdateLayout) const;

#endif

protected:

    virtual bool cssPropertyMatches(const CSSProperty*) const;

private:

    CSSComputedStyleDeclaration(PassRefPtr<Node>, bool allowVisitedStyle, const String&);

    virtual void setCssText(const String&, ExceptionCode&);

    virtual String removeProperty(int propertyID, ExceptionCode&);

    virtual void setProperty(int propertyId, const String& value, bool important, ExceptionCode&);

    PassRefPtr<CSSValue> valueForShadow(const ShadowData*, int) const;

    PassRefPtr<CSSPrimitiveValue> currentColorOrValidColor(RenderStyle*, const Color&) const;

    RefPtr<Node> m_node;

    PseudoId m_pseudoElementSpecifier;

    bool m_allowVisitedStyle;

};

inline PassRefPtr<CSSComputedStyleDeclaration> computedStyle(PassRefPtr<Node> node,  bool allowVisitedStyle = false, const String& pseudoElementName = String())

{

    return adoptRef(new CSSComputedStyleDeclaration(node, allowVisitedStyle, pseudoElementName));

}

} // namespace WebCore

#endif // CSSComputedStyleDeclaration_h