Connection.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_CONNECTION_HPP__
#define __FWCOM_CONNECTION_HPP__

#include "fwCom/config.hpp"

#include "fwCom/SlotConnectionBase.hpp"

namespace fwCom
{

struct Connection
{
    struct Blocker
    {
        Blocker()
        {
        }

        Blocker( Connection connection )
            : m_blocker(connection.getBlocker())
        {
        }

        void reset()
        {
            m_blocker.reset();
        }

        protected:
            SlotConnectionBase::BlockerSptrType m_blocker;
    };

    Connection()
    {
    }

    Connection(const SlotConnectionBase::sptr &connection) : m_connectionBase(connection)
    {
    }

    void disconnect()
    {
        SlotConnectionBase::sptr connection(m_connectionBase.lock());
        if(connection)
        {
            connection->disconnect();
        }
    }

    bool expired() const
    {
        return m_connectionBase.expired();
    }

    protected:

        SlotConnectionBase::BlockerSptrType getBlocker()
        {
            SlotConnectionBase::BlockerSptrType blocker;
            SlotConnectionBase::sptr connection(m_connectionBase.lock());
            if(connection)
            {
                blocker = connection->getBlocker();
            }
            return blocker;
        }

        SlotConnectionBase::wptr m_connectionBase;

};


} // namespace fwCom

#endif /* __FWCOM_CONNECTION_HPP__ */