DtTerrainPageSignaler.h

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/******************************************************************************
** Copyright (c) 2015 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>
#include <vrvUtil/DtVirtualBaseClass.h>

#include <boost/signals.hpp>

namespace osg
{
   class Node;
   class Group;
}

namespace makVrv
{
   class DT_DLL_VRVOSG DtTerrainPageSignaler : public DtVirtualBaseClass
   {
   public:
      static DtTerrainPageSignaler& instance(DtDe&);
      static void registerInstance(DtDe& de, DtTerrainPageSignaler*);

      virtual ~DtTerrainPageSignaler();

      boost::signal<void (osg::Group* page, osg::Node* child)> signal_childPagedIn;

      boost::signal<void (osg::Group* page, osg::Node* child)> signal_childAboutToPageOut;

      virtual void setSignalsEnabled(bool enable);

      virtual bool signalsEnabled(void) const;

   protected:
      DtTerrainPageSignaler();

      bool mySignalsEnabled;
   };
}