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bell.h

Go to the documentation of this file.

#ifndef __BELL_H_INCLUDED__
#define __BELL_H_INCLUDED__

// $Id$

//**********************************************************************
//                                                                     *
//    Description:   'Bell Master' abstract interface for block        *
//                   instrument bell.                                  *
//                                                                     *
//    Author:        Chris White (whitecf@bcs.org.uk)                  *
//                                                                     *
//    Copyright (C) 2003  Monitor Computing Services Ltd.              *
//                                                                     *
//    This program is free software; you can redistribute it and/or    *
//    modify it under the terms of the GNU General Public License      *
//    as published by the Free Software Foundation; either version 2   *
//    of the License, or any later version.                            *
//                                                                     *
//    This program is distributed in the hope that it will be useful,  *
//    but WITHOUT ANY WARRANTY; without even the implied warranty of   *
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    *
//    GNU General Public License for more details.                     *
//                                                                     *
//    You should have received a copy of the GNU General Public        *
//    License (http://www.gnu.org/copyleft/gpl.html) along with this   *
//    program; if not, write to:                                       *
//       The Free Software Foundation Inc.,                            *
//       59 Temple Place - Suite 330,                                  *
//       Boston, MA  02111-1307,                                       *
//       USA.                                                          *
//                                                                     *
//**********************************************************************
//                                                                     *
//    Notes:                                                           *
//                                                                     *
//**********************************************************************


#include <watchble.h>


namespace Monitor {
namespace BellMaster {



class Bell : public Monitor::Utility::Watchable
{
public:
     struct Busy {};


    Bell();

    virtual ~Bell();


    const Monitor::Utility::CallbackBase&
    addListener(const Monitor::Utility::CallbackBase&    newWatch) const;

    void
    removeListener(const void*    listener) const;

    virtual void
    ring() const
    throw (Busy);

    virtual void
    ring(unsigned*    newSequence)
    throw (Busy) = 0;
};  // class Bell

};  // namespace BellMaster
};  // namespace Monitor


#endif // __BELL_H_INCLUDED__

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