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/*
* DNN - Data News Network
*
* by Stephane Chatty
*
* Copyright 1993-1994
* Centre d'Etudes de la Navigation Aerienne (CENA)
*
* Reactions.
*
* $Id$
* $CurLog$
*/
#ifndef DnnReaction_H_
#define DnnReaction_H_
#include "ccu/List.h"
class DnnTrigger;
class DnnEvent;
class DnnBaseReaction {
protected:
DnnBaseReaction ();
CcuListOf <DnnTrigger> Triggers;
public:
virtual ~DnnBaseReaction ();
void SubscribeTo (DnnTrigger&);
void UnsubscribeTo (DnnTrigger&);
virtual void Manage (DnnEvent&);
};
typedef void (*DnnHandlingFunction) (DnnEvent&);
class DnnReaction : public DnnBaseReaction {
protected:
DnnHandlingFunction Handler;
public:
DnnReaction (DnnHandlingFunction);
~DnnReaction ();
void Manage (DnnEvent&);
};
#define SpecializedReaction(R,S) \
class R : public DnnBaseReaction { \
protected: \
S& Body; \
void (S::*React) (DnnEvent&); \
public: \
R (S& s, void (S::*sc) (DnnEvent&)) : DnnBaseReaction (), Body (s), React (sc) {} \
~R () {} \
void Manage (DnnEvent& ev) { (Body.*React) (ev); } \
};
template <class T> class DnnReactionOf : public DnnBaseReaction {
protected:
T& Object;
void (T::*Reaction) (DnnEvent&);
public:
DnnReactionOf (T& o, void (T::*r) (DnnEvent&)) : DnnBaseReaction (), Object (o), Reaction (r) {}
~DnnReactionOf () {}
void Manage (DnnEvent& ev) { (Object.*Reaction) (ev); }
};
#endif /* DnnReaction_H_ */
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