/*

 * Copyright (C) 2008 Apple Inc. All Rights Reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#ifndef CSSVariablesDeclaration_h

#define CSSVariablesDeclaration_h

#include "PlatformString.h"

#include "StringHash.h"

#include "StyleBase.h"

#include <wtf/HashMap.h>

#include <wtf/RefPtr.h>

#include <wtf/Vector.h>

namespace WebCore {

typedef int ExceptionCode;

class CSSMutableStyleDeclaration;

class CSSRule;

class CSSValue;

class CSSValueList;

class CSSVariablesDeclaration : public StyleBase {

public:

    static PassRefPtr<CSSVariablesDeclaration> create(StyleBase* owningRule, const Vector<String>& names, const Vector<RefPtr<CSSValue> >& values)

    {

        return adoptRef(new CSSVariablesDeclaration(owningRule, names, values));

    }

    virtual ~CSSVariablesDeclaration();

    String getVariableValue(const String&);

    String removeVariable(const String&, ExceptionCode&);

    void setVariable(const String&, const String&, ExceptionCode&);

    unsigned length() const;

    String item(unsigned index);

    CSSRule* parentRule();

    String cssText() const;

    void setCssText(const String&); // FIXME: The spec contradicts itself regarding whether or not cssText is settable.

    void addParsedVariable(const String& variableName, PassRefPtr<CSSValue> variableValue, bool updateNamesList = true);

    CSSValueList* getParsedVariable(const String& variableName);

    CSSMutableStyleDeclaration* getParsedVariableDeclarationBlock(const String& variableName);

private:

    CSSVariablesDeclaration(StyleBase* owningRule, const Vector<String>& names, const Vector<RefPtr<CSSValue> >& values);

    void setNeedsStyleRecalc();

protected:

    Vector<String> m_variableNames;

    HashMap<String, RefPtr<CSSValue> > m_variablesMap;

};

} // namespace WebCore

#endif // CSSVariablesDeclaration_h