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ITxStartEnd.hpp

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/******************************************************************************
 * WIFIMAC                                                                    *
 * __________________________________________________________________________ *
 *                                                                            *
 * Copyright (C) 1999-2007                                                    *
 * Chair of Communication Networks (ComNets)                                  *
 * Kopernikusstr. 16, D-52074 Aachen, Germany                                 *
 * phone: ++49-241-80-27910 (phone), fax: ++49-241-80-22242                   *
 * email: wns@comnets.rwth-aachen.de                                         *
 * www: http://rise.comnets.rwth-aachen.de                                    *
 ******************************************************************************/

#ifndef WIFIMAC_CONVERGENCE_ITXSTARTEND_HPP
#define WIFIMAC_CONVERGENCE_ITXSTARTEND_HPP

#include <WNS/Subject.hpp>
#include <WNS/ldk/Compound.hpp>

namespace wifimac { namespace convergence {

    enum TxStartEndState {
        start,
        end
    };

    class ITxStartEnd
    {
    public:
        virtual ~ITxStartEnd()
            {}

        virtual void onTxStart(const wns::ldk::CompoundPtr& compound) = 0;
        virtual void onTxEnd(const wns::ldk::CompoundPtr& compound) = 0;
    };

    class TxStartEndNotification :
        virtual public wns::Subject<ITxStartEnd>
    {
    public:

        struct OnTxStartEnd
        {
            OnTxStartEnd(const wns::ldk::CompoundPtr& _compound, const TxStartEndState _state):
                compound(_compound),
                state(_state)
                {}

            void operator()(ITxStartEnd* tx)
                {
                    assure(compound, "compound is NULL");

                    if(state == start)
                    {
                        // The functor calls the txStartIndication implemented by the
                        // Observer
                        tx->onTxStart(compound);
                    }
                    else
                    {
                        // The functor calls the txEndIndication implemented by the
                        // Observer
                        tx->onTxEnd(compound);
                    }
                }
        private:
            wns::ldk::CompoundPtr compound;
            TxStartEndState state;
        };
    };
}
}

#endif // not defined WIFIMAC_SCHEDULER_TXSTARTENDINTERFACE_HPP

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