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Event.h

/*
 * Copyright 2003 Michael A. Marsh, Cornell University. All rights reserved.
 * This software is released under the modified BSD license.
 * See the file LICENSE in the top-level directory for details.
 */
//
// $Id: Event.h,v 1.3 2004/05/19 15:56:50 mmarsh Exp $
//
// $Log: Event.h,v $
// Revision 1.3  2004/05/19 15:56:50  mmarsh
// *** empty log message ***
//
// Revision 1.2  2003/11/04 22:31:48  mmarsh
// *** empty log message ***
//
//

#ifndef __CODEX_EVENTS_EVENT_H__
#define __CODEX_EVENTS_EVENT_H__

namespace CODEX_Events
{
   class Activity;

   class EventBase
   {
      public :
         EventBase( Activity* source );

         virtual ~EventBase();

         virtual bool handle() = 0;

         Activity* source();

      protected :
         Activity* m_source;
   };

   class EventAck : public EventBase
   {
      public :
         EventAck( Activity* destination, bool failure=false );

         virtual ~EventAck();
         bool handle();

         bool failure() const { return m_failure; }

      private :
         Activity* m_destination;
         bool      m_failure;
   };

   class DataHandler;

   class DataEvent : public EventBase
   {
      public :
         DataEvent( Activity* source, DataHandler* destination );

         virtual ~DataEvent();
         bool handle();

      private :
         DataHandler* m_destination;
   };

   class CloseHandler;

   class CloseEvent : public EventBase
   {
      public :
         CloseEvent( Activity* source, CloseHandler* destination );

         virtual ~CloseEvent();
         bool handle();

      private :
         CloseHandler* m_destination;
   };

}

#endif /* __CODEX_EVENTS_EVENT_H__ */

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