#ifndef VEGA_VVirtualFrameChannelViewer
#define VEGA_VVirtualFrameChannelViewer

//*-- Author :    Damir Buskulic   22/04/03

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// VVirtualFrameChannelViewer                                           //
//                                                                      //
//                                                                      //
//////////////////////////////////////////////////////////////////////////

#ifndef ROOT_TClass
#include "TClass.h"
#endif
#ifndef VEGA_VVirtualFrameChannel
#include "VVirtualFrameChannel.h"
#endif

class VVirtualFrameChannel;

class VVirtualFrameChannelViewer : public TObject
{

private:
   static TClass*  mgViewer;         // Pointer to current viewer

public:
   VVirtualFrameChannelViewer();
   virtual ~VVirtualFrameChannelViewer() {}
   virtual void         SetFrameChannel(VVirtualFrameChannel *fc) = 0;
   virtual double       GetCurrentTime() = 0;
   virtual TObject*     GetPlot(int numpad, int numsubpad=0) = 0;
    
   static  VVirtualFrameChannelViewer *FrameChannelViewer(VVirtualFrameChannel *obj);
   static void          SetViewer(const char *viewer);

    ClassDef(VVirtualFrameChannelViewer,0)  // Abstract interface for Frame Channel players
};

R__EXTERN VVirtualFrameChannelViewer* gDataViewer;
#endif