fbxeventhandler.h

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/****************************************************************************************
 
   Copyright (C) 2015 Autodesk, Inc.
   All rights reserved.
 
   Use of this software is subject to the terms of the Autodesk license agreement
   provided at the time of installation or download, or which otherwise accompanies
   this software in either electronic or hard copy form.
 
****************************************************************************************/

#ifndef _FBXSDK_CORE_EVENT_HANDLER_H_
#define _FBXSDK_CORE_EVENT_HANDLER_H_

#include <fbxsdk/fbxsdk_def.h>

#include <fbxsdk/core/fbxevent.h>
#include <fbxsdk/core/base/fbxintrusivelist.h>

#include <fbxsdk/fbxsdk_nsbegin.h>

class FbxListener;

class FbxEventHandler
{
public:
    enum EType
    {
        eListener,  
        eEmitter,   
        eCount      
    };

    virtual int GetHandlerEventType()=0;

    virtual void FunctionCall(const FbxEventBase& pEvent)=0;

    virtual FbxListener* GetListener()=0;

/*****************************************************************************************************************************
** WARNING! Anything beyond these lines is for internal use, may not be documented and is subject to change without notice! **
*****************************************************************************************************************************/
#ifndef DOXYGEN_SHOULD_SKIP_THIS
    FbxEventHandler(){}
    virtual ~FbxEventHandler(){}

    FBXSDK_INTRUSIVE_LIST_NODE(FbxEventHandler, eCount);
#endif /* !DOXYGEN_SHOULD_SKIP_THIS *****************************************************************************************/
};

/*****************************************************************************************************************************
** WARNING! Anything beyond these lines is for internal use, may not be documented and is subject to change without notice! **
*****************************************************************************************************************************/
#ifndef DOXYGEN_SHOULD_SKIP_THIS

template <typename EventType, typename ListenerType> class FbxMemberFuncEventHandler : public FbxEventHandler
{
    typedef void (ListenerType::*CallbackFnc)(const EventType*);

public:
    FbxMemberFuncEventHandler(ListenerType* pListenerInstance, CallbackFnc pFunction) : mListener(pListenerInstance), mFunction(pFunction){}
    virtual int GetHandlerEventType(){ return EventType::GetStaticTypeId(); }  
    virtual void FunctionCall(const FbxEventBase& pEvent){ (*mListener.*mFunction)(reinterpret_cast<const EventType*>(&pEvent)); } 
    virtual FbxListener* GetListener(){ return mListener; }

private:
    ListenerType*   mListener;
    CallbackFnc     mFunction;
};

template <typename EventType, typename ListenerType> class FbxConstMemberFuncEventHandler : public FbxEventHandler
{
    typedef void (ListenerType::*CallbackFnc)(const EventType*) const;

public:
    FbxConstMemberFuncEventHandler(ListenerType* pListenerInstance, CallbackFnc pFunction) : mListener(pListenerInstance), mFunction(pFunction){}
    virtual int GetHandlerEventType(){ return EventType::GetStaticTypeId(); }    
    virtual void FunctionCall(const FbxEventBase& pEvent){ (*mListener.*mFunction)(reinterpret_cast<const EventType*>(&pEvent)); }
    virtual FbxListener* GetListener(){ return mListener; }

private:
    ListenerType*   mListener;
    CallbackFnc     mFunction;
};

template <typename EventType> class FbxFuncEventHandler : public FbxEventHandler
{
    typedef void (*CallbackFnc)(const EventType*, FbxListener*);

public:
    FbxFuncEventHandler(FbxListener* pListener, CallbackFnc pFunction) : mListener(pListener), mFunction(pFunction){}
    virtual int GetHandlerEventType(){ return EventType::GetStaticTypeId(); }   
    virtual void FunctionCall(const FbxEventBase& pEvent){ (*mFunction)(reinterpret_cast<const EventType*>(&pEvent), mListener); }
    virtual FbxListener* GetListener(){ return mListener; }

private:
    FbxListener*    mListener;
    CallbackFnc     mFunction;
};
#endif /* !DOXYGEN_SHOULD_SKIP_THIS *****************************************************************************************/

#include <fbxsdk/fbxsdk_nsend.h>

#endif /* _FBXSDK_CORE_EVENT_HANDLER_H_ */