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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 IvlBehaviour_H_
#define IvlBehaviour_H_
#include "cplus_bugs.h"
#include "Reaction.h"
#include "ivl/String.h"
#include "ivl/List.h"
class IvlBehaviour;
class IvlTransition;
class IvlEvent;
class IvlToken {
public:
IvlToken ();
virtual ~IvlToken ();
};
typedef void (IvlActivation) (IvlBaseReaction*, IvlToken*);
typedef void (IvlAction) (IvlToken*, IvlEvent*);
class IvlState {
protected:
IvlString Name;
IvlListOf <IvlTransition> Transitions;
public:
IvlState (const char*);
~IvlState ();
IvlTransition* CreateTransition (const char*, IvlState*, IvlActivation*, IvlAction*);
void Activate (IvlBehaviour*, IvlToken*);
};
class IvlTransition {
protected:
IvlString Name;
IvlState* From;
IvlState* To;
IvlActivation* Activation;
IvlAction* Action;
public:
IvlTransition (const char*, IvlState*, IvlState*, IvlActivation*, IvlAction*);
~IvlTransition ();
inline IvlState* GetDestination () const { return To;}
inline IvlState* GetOrigin () const { return From;}
void Activate (IvlBaseReaction*, IvlToken*);
IvlState* Fire (IvlToken*, IvlEvent*);
};
class IvlBehaviourModel {
protected:
IvlState* Initial;
IvlListOf <IvlState> States;
public:
IvlBehaviourModel ();
~IvlBehaviourModel ();
inline IvlState* GetInitial () const { return Initial; }
inline void SetInitial (IvlState* s) { Initial = s; }
IvlState* CreateState (const char* = 0);
};
class IvlBehaviour {
friend class IvlBehaviourReaction;
protected:
IvlBehaviourModel* TheModel;
IvlState* CurState;
IvlListOf <IvlBaseReaction> CurReactions;
IvlToken* CurToken;
void Fire (IvlTransition*, IvlEvent*);
public:
IvlBehaviour (IvlBehaviourModel&, IvlToken*);
~IvlBehaviour ();
inline void AddReaction (IvlBaseReaction* r) { CurReactions.Append (r); }
};
class IvlBehaviourReaction : public IvlBaseReaction {
protected:
IvlBehaviour* TheBehaviour;
IvlTransition* TheTransition;
public:
IvlBehaviourReaction (IvlBehaviour*, IvlTransition*);
~IvlBehaviourReaction ();
void Manage (IvlEvent&);
};
#endif /* IvlBehaviour_H_ */
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