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/*
* DNN - Data News Network
*
* by Stephane Chatty
*
* Copyright 1993-1996
* Centre d'Etudes de la Navigation Aerienne (CENA)
*
* Behaviours.
*
* $Id$
* $CurLog$
*/
#ifndef DnnBehaviour_H_
#define DnnBehaviour_H_
#include "cplus_bugs.h"
#include "Reaction.h"
#include "ccu/String.h"
#include "ccu/List.h"
class DnnBehaviour;
class DnnTransition;
class DnnEvent;
class DnnToken {
public:
DnnToken ();
virtual ~DnnToken ();
};
typedef void (DnnActivation) (DnnBaseReaction*, DnnToken*);
typedef void (DnnAction) (DnnToken*, DnnEvent*);
class DnnState {
protected:
CcuString Name;
CcuListOf <DnnTransition> Transitions;
public:
DnnState (const char*);
~DnnState ();
DnnTransition* CreateTransition (const char*, DnnState*, DnnActivation*, DnnAction*);
void Activate (DnnBehaviour*, DnnToken*);
};
class DnnTransition {
protected:
CcuString Name;
DnnState* From;
DnnState* To;
DnnActivation* Activation;
DnnAction* Action;
public:
DnnTransition (const char*, DnnState*, DnnState*, DnnActivation*, DnnAction*);
~DnnTransition ();
inline DnnState* GetDestination () const { return To;}
inline DnnState* GetOrigin () const { return From;}
void Activate (DnnBaseReaction*, DnnToken*);
DnnState* Fire (DnnToken*, DnnEvent*);
};
class DnnBehaviourModel {
protected:
DnnState* Initial;
CcuListOf <DnnState> States;
public:
DnnBehaviourModel ();
~DnnBehaviourModel ();
inline DnnState* GetInitial () const { return Initial; }
inline void SetInitial (DnnState* s) { Initial = s; }
DnnState* CreateState (const char* = 0);
};
class DnnBehaviour {
friend class DnnBehaviourReaction;
protected:
DnnBehaviourModel* TheModel;
DnnState* CurState;
CcuListOf <DnnBaseReaction> CurReactions;
DnnToken* CurToken;
void Fire (DnnTransition*, DnnEvent*);
public:
DnnBehaviour (DnnBehaviourModel&, DnnToken*);
~DnnBehaviour ();
inline void AddReaction (DnnBaseReaction* r) { CurReactions.Append (r); }
};
class DnnBehaviourReaction : public DnnBaseReaction {
protected:
DnnBehaviour* TheBehaviour;
DnnTransition* TheTransition;
public:
DnnBehaviourReaction (DnnBehaviour*, DnnTransition*);
~DnnBehaviourReaction ();
void Manage (DnnEvent&);
};
#endif /* DnnBehaviour_H_ */
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