include/vrvCore/DtIntervisibilitySignaler.h

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/******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: DtIntervisibilitySignaler.h,v $ $Revision: 1.23 $ $State: Exp $
******************************************************************************/


#pragma once

#include <vrvCore/vrvCore.h>
#include <vrvUtil/DtVirtualBaseClass.h>
#include <vrvCore/DtUniqueID.h>

#include <boost/signal.hpp>

namespace makVrv
{
   class DtIntervisibilityElement;
   class DtIntervisibilityStateListener;

   class DT_DLL_VRVCORE DtIntervisibilitySignaler : public DtVirtualBaseClass
   {
   public:

      static DtIntervisibilitySignaler& instance(DtDe& de);
      static void registerInstance(DtDe& de, DtIntervisibilitySignaler*);

      virtual ~DtIntervisibilitySignaler();

      boost::signal<void (DtElementID)> signal_intervisibilityObjectCreated;

      boost::signal<void (DtIntervisibilityElement*)> signal_elementAboutToBeDestroyed;
      boost::signal<void (DtIntervisibilityStateListener*)> signal_listenerAboutToBeDestroyed;

   protected:

      DtIntervisibilitySignaler();

   };
}