/*

    Copyright (C) 2006 Nikolas Zimmermann <wildfox@kde.org>

                  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 SVGListTraits_h

#define SVGListTraits_h

#if ENABLE(SVG)

#include <wtf/RefPtr.h>

namespace WebCore {

    template<typename Item> struct UsesDefaultInitializer { static const bool value = true; };

    template<> struct UsesDefaultInitializer<double>      { static const bool value = false; };

    template<> struct UsesDefaultInitializer<float>       { static const bool value = false; };

    template<bool usesDefaultInitializer, typename Item>

    struct SVGListTraits { };

    template<typename ItemPtr>

    struct SVGListTraits<true, ItemPtr*> {

        static ItemPtr* nullItem() { return 0; }

        static bool isNull(ItemPtr* it) { return !it; }

    };

    template<typename ItemPtr>

    struct SVGListTraits<true, RefPtr<ItemPtr> > {

        static RefPtr<ItemPtr> nullItem() { return 0; }

        static bool isNull(const RefPtr<ItemPtr>& it) { return !it; }

    };

    template<typename Item>

    struct SVGListTraits<true, Item> {

        static Item nullItem() { return Item(); }

        static bool isNull(Item it) { return !it; }

    };

    template<>

    struct SVGListTraits<false, double> {

        static double nullItem() { return 0.0; }

        static bool isNull(double) { return false; }

    };

    template<>

    struct SVGListTraits<false, float> {

        static float nullItem() { return 0; }

        static bool isNull(float) { return false; }

    };

} // namespace WebCore

#endif // SVG_SUPPORT

#endif // SVGListTraits_h

// vim:ts=4:noet