freEvents.h

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/*=========================================================================

  Program:   F.R.E.E. - flexible registration evaluation engine
  Version:   v.1.0.0
  Date:      $Date: 2006/09/01 12:00:00 $
  Module:    $RCSfile: freEvents.h,v $
  Language:  C++



  Copyright (c) 2007 Ralf o Floca (Department of Medical Informatics,
  Institute for Medical Biometry and Informatics, University of Heidelberg,
  Germany). All rights reserved.
  See FREECopyright.txt or http://www.mi.med.uni-hd.de/free/copyright.htm
  for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __freEvents_h
#define __freEvents_h

#include "freElementals.h"
#include "itkLightObject.h"

namespace FREE
{


#define freNewEventBaseMacro(x, FncPtr) \
static Pointer New(FncPtr pE)\
{\
  Pointer smartPtr;\
  x* rawPtr = new x(pE);\
  smartPtr = rawPtr;\
        rawPtr->UnRegister();\
  return smartPtr;\
}\

#define freNewEventMacro(x, T, FncPtr) \
static Pointer New(T* pObject,FncPtr pE)\
{\
  Pointer smartPtr;\
  x* rawPtr = new x(pObject, pE);\
  smartPtr = rawPtr;\
        rawPtr->UnRegister();\
  return smartPtr;\
}\


class NotificationEventBase : public itk::LightObject
{
public:
   typedef void (*NotifyEvent)(void* pSender, long threadID);
         typedef itk::SmartPointer<NotificationEventBase> Pointer;
         freNewEventBaseMacro(NotificationEventBase,NotifyEvent);
         itkTypeMacro(NotificationEventBase,itk::LightObject);

private:
   NotifyEvent m_NotifyEvent;

protected:
         NotificationEventBase(NotifyEvent pNE);
         NotificationEventBase();

public:  
   
   virtual void Execute(void* pSender, long threadID = 0);
};

class CallbackEventBase : public itk::LightObject
{
public:  
   typedef bool (*CallEvent)(CallbackType callbackID, CallbackFlagType flag,
                                                         void* pData, void* pSender, long threadID);
         typedef itk::SmartPointer<CallbackEventBase> Pointer;

         freNewEventBaseMacro(CallbackEventBase,CallEvent);
         itkTypeMacro(CallbackEventBase,itk::LightObject);

private:
  CallEvent m_CallEvent;

protected:
  CallbackEventBase(CallEvent pCE);
  CallbackEventBase();

public:

   virtual bool Execute(CallbackType callbackID, CallbackFlagType flag,
                                                                                                         void* pData, void* pSender, long threadID = 0);
};

class ProgressEventBase: public NotificationEventBase
{
public:
   typedef void (*ProgEvent)(const long status, const std::string& sComment, void* pSender, long threadID);
         typedef itk::SmartPointer<ProgressEventBase> Pointer;

         freNewEventBaseMacro(ProgressEventBase,ProgEvent);
         itkTypeMacro(ProgressEventBase,NotificationEventBase);

private:
   ProgEvent m_ProgressEvent;

protected:
   ProgressEventBase(ProgEvent pPE);
   ProgressEventBase();

public:
   virtual void Execute(const long status, const std::string& sComment, void* pSender, long threadID = 0);
};

template <typename T>
class NotificationEvent : public NotificationEventBase
{
public:
   typedef void (T::*NotifyEvent)(void* pSender, long threadID);
         typedef itk::SmartPointer<NotificationEvent<T> > Pointer;

         freNewEventMacro(NotificationEvent, T, NotifyEvent);
         itkTypeMacro(NotificationEvent,NotificationEventBase);

private:
   T* m_Object;
   NotifyEvent m_NotifyEvent;

protected:
         NotificationEvent(T* pObject, NotifyEvent pNE)
   {
          m_Object = pObject;
          m_NotifyEvent = pNE;
   };

public:
   virtual void Execute(void* pSender, long threadID = 0)
   { (m_Object->*m_NotifyEvent)(pSender, threadID); };
};

template <typename T>
class CallbackEvent: public CallbackEventBase
{
public:  
   typedef bool (T::*CallEvent)(CallbackType callbackID, CallbackFlagType flag,
                                                         void* pData, void* pSender, long threadID);
         typedef itk::SmartPointer<CallbackEvent<T> > Pointer;

         freNewEventMacro(CallbackEvent, T, CallEvent);
         itkTypeMacro(CallbackEvent,CallbackEventBase);

private:
  T* m_Object;
  CallEvent m_CallEvent;

protected:
   CallbackEvent(T* pObject, CallEvent pCE)
   {
          m_Object = pObject;
          m_CallEvent = pCE;
   };

public:
   virtual bool Execute(CallbackType callbackID, CallbackFlagType flag,
                                                         void* pData, void* pSender, long threadID = 0)
   { return (m_Object->*m_CallEvent)(callbackID, flag, pData, pSender, threadID); };
};

template <typename T>
class ProgressEvent: public ProgressEventBase
{
public:
   typedef void (T::*ProgEvent)(const long status, const std::string& sComment, void* pSender, long threadID);
         typedef itk::SmartPointer<ProgressEvent<T> > Pointer;

         freNewEventMacro(ProgressEvent, T, ProgEvent);
         itkTypeMacro(ProgressEvent,ProgressEventBase);

private:
   T* m_Object;
   ProgEvent m_ProgressEvent;

protected:
         ProgressEvent(T* pObject, ProgEvent pPE)
   {
          m_Object = pObject;
          m_ProgressEvent = pPE;
   };
   
public:
   virtual void Execute(const long status, const std::string& sComment, void* pSender, long threadID = 0)
   { (m_Object->*m_ProgressEvent)(status, sComment, pSender, threadID); };
};

} //end of namespace free
#endif

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