/*

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

 *

 * 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 COMPUTER, 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 COMPUTER, 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 JSSVGPODTypeWrapper_h

#define JSSVGPODTypeWrapper_h

#if ENABLE(SVG)

#include "Frame.h"

#include "Shared.h"

#include "SVGElement.h"

#include <wtf/Assertions.h>

namespace WebCore {

template<typename PODType>

class JSSVGPODTypeWrapper : public Shared<JSSVGPODTypeWrapper<PODType> >

{

public:

    JSSVGPODTypeWrapper(const PODType& type)

    : m_podType(type)

    { }

    virtual ~JSSVGPODTypeWrapper() { }

    operator PODType&() { return m_podType; }

    // Implemented by JSSVGPODTypeWrapperCreator

    virtual void commitChange(KJS::ExecState*) { }

private:

    PODType m_podType;

};

template<typename PODType, typename PODTypeCreator>

class JSSVGPODTypeWrapperCreator : public JSSVGPODTypeWrapper<PODType>

{

public:

    typedef PODType (PODTypeCreator::*GetterMethod)() const;

    typedef void (PODTypeCreator::*SetterMethod)(PODType);

    JSSVGPODTypeWrapperCreator(PODTypeCreator* creator, GetterMethod getter, SetterMethod setter)

    : JSSVGPODTypeWrapper<PODType>((creator->*getter)())

    , m_creator(creator)

    , m_setter(setter)

    { }

    virtual ~JSSVGPODTypeWrapperCreator() { }

    virtual void commitChange(KJS::ExecState* exec)

    {

        (m_creator->*m_setter)((PODType&)(*this));

        ASSERT(exec && exec->dynamicInterpreter());

        Frame* activeFrame = static_cast<KJS::ScriptInterpreter*>(exec->dynamicInterpreter())->frame();

        if (!activeFrame)

            return;

        SVGDocumentExtensions* extensions = (activeFrame->document() ? activeFrame->document()->accessSVGExtensions() : 0);

        if (extensions && extensions->hasGenericContext<PODTypeCreator>(m_creator)) {

            const SVGElement* context = extensions->genericContext<PODTypeCreator>(m_creator);

            ASSERT(context);

            context->notifyAttributeChange();

        }

    }

private:

    // Update callbacks

    PODTypeCreator* m_creator;

    SetterMethod m_setter;

};

template<typename PODType>

class SVGPODListItem;

template<typename PODType, typename ListType>

class JSSVGPODTypeWrapperCreatorForList : public JSSVGPODTypeWrapperCreator<PODType, SVGPODListItem<PODType> >

{

public:

    JSSVGPODTypeWrapperCreatorForList(SVGPODListItem<PODType>* creator, const ListType* list)

    : JSSVGPODTypeWrapperCreator<PODType, SVGPODListItem<PODType> >(creator,

                                                                    &SVGPODListItem<PODType>::value,

                                                                    &SVGPODListItem<PODType>::setValue)

    , m_list(list)

    { }

    virtual ~JSSVGPODTypeWrapperCreatorForList() { }

    virtual void commitChange(KJS::ExecState* exec)

    {

        // Update POD item within SVGList

        JSSVGPODTypeWrapperCreator<PODType, SVGPODListItem<PODType> >::commitChange(exec);

        // Notify owner of the list, that it's content changed

        const SVGElement* context = m_list->context();

        ASSERT(context);

        context->notifyAttributeChange();         

    }

private:

    const ListType* m_list;

};

};

#endif // ENABLE(SVG)

#endif // JSSVGPODTypeWrapper_h