GenericEventHandler.h

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// $Id: $
//==========================================================================
//  AIDA Detector description implementation for LCD
//--------------------------------------------------------------------------
// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
// All rights reserved.
//
// For the licensing terms see $DD4hepINSTALL/LICENSE.
// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
//
// Author     : M.Frank
//
//==========================================================================
#ifndef DD4HEP_DDEVE_GENERICEVENTHANDLER_H
#define DD4HEP_DDEVE_GENERICEVENTHANDLER_H

// Framework include files
#include "DDEve/EventHandler.h"

// Forward declarations

namespace DD4hep {


  class GenericEventHandler : public EventHandler  {
  protected:
    typedef std::set<EventConsumer*> Subscriptions;
    std::map<std::string,EventHandler*> m_handlers;
    EventHandler* m_current;
    Subscriptions m_subscriptions;

    EventHandler* current() const;
  public:
    GenericEventHandler();
    virtual ~GenericEventHandler();
    virtual const TypedEventCollections& data()  const   { return current()->data();  }
    virtual long numEvents() const;
    virtual std::string datasourceName() const;
    virtual CollectionType collectionType(const std::string& collection) const;
    virtual size_t collectionLoop(const std::string& collection, DDEveHitActor& actor);
    virtual size_t collectionLoop(const std::string& collection, DDEveParticleActor& actor);
    virtual bool Open(const std::string& type, const std::string& file_name);
    virtual bool NextEvent();
    virtual bool PreviousEvent();
    virtual bool GotoEvent(long event_number);
    virtual void Subscribe(EventConsumer* display);
    virtual void Unsubscribe(EventConsumer* display);

#ifndef __CINT__
    virtual void NotifySubscribers(void (EventConsumer::*pmf)(EventHandler*));
#endif
 
    ClassDef(GenericEventHandler,0);
  };
} /* End namespace DD4hep   */

#endif /* DD4HEP_DDEVE_GENERICEVENTHANDLER_H */