SlotConnection.hpp

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2015.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */
#ifndef __FWCOM_SLOTCONNECTION_HPP__
#define __FWCOM_SLOTCONNECTION_HPP__

#include "fwCom/SlotConnectionBase.hpp"

#include "fwCom/SlotBase.hpp"

namespace fwCom
{

template < typename F >
struct Signal;

template < typename F >
struct SlotConnection;

template < typename ... A >
struct SlotConnection< void (A ...) > : SlotConnectionBase
{
    typedef void SignatureType ( A ... );
    typedef SlotConnection< SignatureType > SelfType;

    typedef SPTR ( SelfType ) sptr;

    typedef Signal< SignatureType > SignalType;
    typedef SPTR ( SignalType )      SignalSptrType;
    typedef WPTR ( SignalType )      SignalWptrType;

    typedef SlotRun< SignatureType > SlotWrapperType;
    typedef SPTR ( SlotWrapperType )  SlotWrapperSptrType;

    typedef SlotRun< SignatureType > SlotRunType;
    typedef SPTR ( SlotRunType )      SlotRunSptrType;

    typedef std::pair< bool, SlotRunType* > PairType;
    static sptr New( const SignalSptrType &signal, const SlotRunSptrType &slot );

    static sptr New( const SignalSptrType &signal,
                     const SPTR( SlotBase ) &slot,
                     const SlotWrapperSptrType &slotWrapper
                     );

    void disconnect();

    ~SlotConnection();


    SlotConnection( const SignalSptrType &signal, const SlotRunSptrType &slot );

    SlotConnection( const SignalSptrType &signal,
                    const SPTR( SlotBase ) &slot,
                    const SlotWrapperSptrType &slotWrapper
                    );


    protected:

        template < typename F >
        friend struct Signal;

        void connectNoLock();


        void disconnectSignalNoLock(const SignalSptrType &sig);

        void disconnectSlotNoLock(const SPTR( SlotBase ) &slot);

        void disconnectWeakLock();

        SlotConnectionBase::BlockerSptrType getBlocker();

        void unblock();

        SignalWptrType m_signal;

        WPTR( SlotBase ) m_connectedSlot;

        SlotWrapperSptrType m_slotWrapper;

        PairType m_pair;

        SlotConnectionBase::BlockerWptrType m_weakBlocker;

        mutable ::fwCore::mt::ReadWriteMutex m_mutex;
};


} // namespace fwCom

#endif /* __FWCOM_SLOTCONNECTION_HPP__ */