/*

 * (C) 1999-2003 Lars Knoll (knoll@kde.org)

 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#ifndef Pair_h

#define Pair_h

#include <wtf/RefCounted.h>

#include "CSSPrimitiveValue.h"

#include <wtf/PassRefPtr.h>

namespace WebCore {

// A primitive value representing a pair.  This is useful for properties like border-radius, background-size/position,

// and border-spacing (all of which are space-separated sets of two values).  At the moment we are only using it for

// border-radius and background-size, but (FIXME) border-spacing and background-position could be converted over to use

// it (eliminating some extra -webkit- internal properties).

class Pair : public RefCounted<Pair> {

public:

    static PassRefPtr<Pair> create()

    {

        return adoptRef(new Pair);

    }

    static PassRefPtr<Pair> create(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second)

    {

        return adoptRef(new Pair(first, second));

    }

    virtual ~Pair() { }

    CSSPrimitiveValue* first() const { return m_first.get(); }

    CSSPrimitiveValue* second() const { return m_second.get(); }

    void setFirst(PassRefPtr<CSSPrimitiveValue> first) { m_first = first; }

    void setSecond(PassRefPtr<CSSPrimitiveValue> second) { m_second = second; }

private:

    Pair() : m_first(0), m_second(0) { }

    Pair(PassRefPtr<CSSPrimitiveValue> first, PassRefPtr<CSSPrimitiveValue> second)

        : m_first(first), m_second(second) { }

    RefPtr<CSSPrimitiveValue> m_first;

    RefPtr<CSSPrimitiveValue> m_second;

};

} // namespace

#endif