//Editor-Info: -*- C++ -*-
//
//Subject: TOVE project / UNI
//
//File: unimode.h
//
//Version: $Revision: 1.14 $
//
//State: $State: Exp $
//
//Date: $Date: 1998/10/19 18:04:43 $
//
//Organisation:
//      Helsinki University of Technology
//      Laboratory of Telecommunications Software and Multimedia
//
//Author:
//      Jari Katajavuori
//
//Description:
//      UNI needs to operate in two distinct modes: user and network
//      modes. These classes implements both modes. Their instances can
//      be given as a parameter for uniProtocol class.
//
//Copyright:
//
//
//Licence:
//
//
//History: 

#ifndef __UNI_UNIMODE_H__
#define __UNI_UNIMODE_H__

#include "unidefs.h"

class uniState;
class uniProtocol;

class uniMode
{
    public:
        virtual bool isNetworkMode(void) = 0;
        
        virtual void continueReleaseProcess(uniProtocol *protocol_) = 0;
        
        virtual uniState *createNullState(void) const = 0;
        virtual uniState *createCallInitiatedState(void) const = 0;
        virtual uniState *createOutgoingCallProceedingState(void) const = 0;
        virtual uniState *createCallDeliveredState(void) const = 0;
        virtual uniState *createCallPresentState(void) const = 0;
        virtual uniState *createCallReceivedState(void) const = 0;
        virtual uniState *createConnectRequestState(void) const = 0;
        virtual uniState *createIncomingCallProceedingState(void) const = 0;
        virtual uniState *createActiveState(void) const = 0;
        virtual uniState *createReleaseRequestState(void) const = 0;
        virtual uniState *createReleaseIndicationState(void) const = 0;
        
    protected:
        uniMode(void);
        virtual ~uniMode(void);
};

class uniUserMode : public uniMode
{
    public:
        static uniUserMode *instance(void);

        virtual bool isNetworkMode(void);
        
        virtual void continueReleaseProcess(uniProtocol *protocol_);
        
        virtual uniState *createNullState(void) const;
        virtual uniState *createCallInitiatedState(void) const;
        virtual uniState *createOutgoingCallProceedingState(void) const;
        virtual uniState *createCallDeliveredState(void) const;
        virtual uniState *createCallPresentState(void) const;
        virtual uniState *createCallReceivedState(void) const;
        virtual uniState *createConnectRequestState(void) const;
        virtual uniState *createIncomingCallProceedingState(void) const;
        virtual uniState *createActiveState(void) const;
        virtual uniState *createReleaseRequestState(void) const;
        virtual uniState *createReleaseIndicationState(void) const;
        
    protected:
        uniUserMode(void);
        virtual ~uniUserMode(void);

    private:
        static uniUserMode *_only;
};

class uniNetworkMode : public uniMode
{
    public:
        static uniNetworkMode *instance(void);

        virtual bool isNetworkMode(void);
        
        virtual void continueReleaseProcess(uniProtocol *protocol_);
        
        virtual uniState *createNullState(void) const;
        virtual uniState *createCallInitiatedState(void) const;
        virtual uniState *createOutgoingCallProceedingState(void) const;
        virtual uniState *createCallDeliveredState(void) const;
        virtual uniState *createCallPresentState(void) const;
        virtual uniState *createCallReceivedState(void) const;
        virtual uniState *createConnectRequestState(void) const;
        virtual uniState *createIncomingCallProceedingState(void) const;
        virtual uniState *createActiveState(void) const;
        virtual uniState *createReleaseRequestState(void) const;
        virtual uniState *createReleaseIndicationState(void) const;
        
    protected:
        uniNetworkMode(void);
        virtual ~uniNetworkMode(void);

    private:
        static uniNetworkMode *_only;
};

#endif // __UNI_UNIMODE_H__