kfbxeventhandler.h

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#ifndef FBXFILESDK_KFBXEVENTS_KFBXEVENTHANDLER_H
#define FBXFILESDK_KFBXEVENTS_KFBXEVENTHANDLER_H

/**************************************************************************************

 Copyright (C) 2001 - 2009 Autodesk, Inc. and/or its licensors.
 All Rights Reserved.

 The coded instructions, statements, computer programs, and/or related material 
 (collectively the "Data") in these files contain unpublished information 
 proprietary to Autodesk, Inc. and/or its licensors, which is protected by 
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 treaties. 
 
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 THE DATA IS PROVIDED "AS IS" AND WITHOUT WARRANTY.
 ALL WARRANTIES ARE EXPRESSLY EXCLUDED AND DISCLAIMED. AUTODESK MAKES NO
 WARRANTY OF ANY KIND WITH RESPECT TO THE DATA, EXPRESS, IMPLIED OR ARISING
 BY CUSTOM OR TRADE USAGE, AND DISCLAIMS ANY IMPLIED WARRANTIES OF TITLE, 
 NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE. 
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 OF THE DATA WILL BE UNINTERRUPTED OR ERROR FREE. 
 
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**************************************************************************************/
#include <fbxfilesdk/fbxfilesdk_def.h>

// Local includes
#include <fbxfilesdk/kfbxevents/kfbxevents.h>

// FBX include
#include <fbxfilesdk/components/kbaselib/klib/kintrusivelist.h>

// FBX namespace begin
#include <fbxfilesdk/fbxfilesdk_nsbegin.h>
namespace kfbxevents
{
    class KFbxListener;

    //-----------------------------------------------------------------
    class KFbxEventHandler
    {
    public:
        enum
        {
            eNODE_LISTENER = 0,
            eNODE_EMITTER,
            eNODE_COUNT
        };

        KFbxEventHandler(){}
        virtual ~KFbxEventHandler(){}

        // Handler handles a certain type of event
        virtual int GetHandlerEventType() = 0;
        virtual void FunctionCall(const KFbxEventBase& pEvent) = 0;
        virtual KFbxListener* GetListener() = 0;

        KFBX_LISTNODE(KFbxEventHandler, eNODE_COUNT);
    };

    //-----------------------------------------------------------------
    template <typename EventType, typename ListenerType>
    class KFbxMemberFuncEventHandler : public KFbxEventHandler
    {
    // VC6Note: There's no reason why the callback is a (const EventType*) it is obvious that it should be
    //           a (const EventType&) but because of a VC6 template limitation, we put  a pointer. 
    typedef void (ListenerType::*CBFunction)(const EventType*);

    public:
        KFbxMemberFuncEventHandler(ListenerType* pListenerInstance, CBFunction pFunc) :
            mListener(pListenerInstance),
            mFunc(pFunc)
        {
        }

        // From KFbxEventHandler
        virtual int GetHandlerEventType(){ return EventType::GetStaticTypeId(); }  
        virtual void FunctionCall(const KFbxEventBase& pEvent){ (*mListener.*mFunc)(reinterpret_cast<const EventType*>(&pEvent)); } 
        virtual KFbxListener* GetListener(){ return mListener;}
    
    private:
        ListenerType* mListener;

        // The callback function
        CBFunction mFunc;
    };

    //-----------------------------------------------------------------
    template <typename EventType, typename ListenerType>
    class KFbxConstMemberFuncEventHandler : public KFbxEventHandler
    {
    // VC6Note: There's no reason why the callback is a (const EventType*) it is obvious that it should be
    //           a (const EventType&) but because of a VC6 template limitation, we put  a pointer. 
    typedef void (ListenerType::*CBFunction)(const EventType*)const;

    public:
        KFbxConstMemberFuncEventHandler(ListenerType* pListenerInstance, CBFunction pFunc) :
            mListener(pListenerInstance),
            mFunc(pFunc)
        {
        }

        // From KFbxEventHandler
        virtual int GetHandlerEventType(){ return EventType::GetStaticTypeId(); }    
        virtual void FunctionCall(const KFbxEventBase& pEvent){ (*mListener.*mFunc)(reinterpret_cast<const EventType*>(&pEvent)); }
        virtual KFbxListener* GetListener(){ return mListener;}

    private:
        ListenerType* mListener;

        // The callback function
        CBFunction mFunc;
    };

    //-----------------------------------------------------------------
    template <typename EventType>
    class KFbxFuncEventHandler : public KFbxEventHandler
    {
    // VC6Note: There's no reason why the callback is a (const EventType*,KFbxListener*) it is obvious that it should be
    //           a (const EventType&,KFbxListener*) but because of a VC6 template limitation, we put  a pointer.
    typedef void (*CBFunction)(const EventType*,KFbxListener*);

    public:
        KFbxFuncEventHandler(KFbxListener* pListener, CBFunction pFunc) :
            mListener(pListener),
            mFunc(pFunc)
        {
        }

        // From KFbxEventHandler
        virtual int GetHandlerEventType(){ return EventType::GetStaticTypeId(); }   
        virtual void FunctionCall(const KFbxEventBase& pEvent){ (*mFunc)(reinterpret_cast<const EventType*>(&pEvent),mListener); }
        virtual KFbxListener* GetListener(){ return mListener; }

    private:
        KFbxListener* mListener;

        // The callback function
        CBFunction mFunc;
    };
}
// FBX namespace end
#include <fbxfilesdk/fbxfilesdk_nsend.h>

#endif // FBXFILESDK_KFBXEVENTS_KFBXEVENTHANDLER_H