#ifndef _fevt_FdComponentSelector_h_
#define _fevt_FdComponentSelector_h_

namespace fevt {
  
  class Eye;
  class Telescope;
  class Pixel;
  
  /**
     \file 
     \brief Selection of Fd components: Eye/Telescope/Pixel
     \author Ralf Ulrich
     \version $Id: FdComponentSelector.h 17255 2010-07-07 13:06:45Z smueller $   
     \ingroup fevt
  */
    
  //! Predicate specifying whether telescope is selected or not
  class ComponentSelector {
    
  public:
    /// Possible component status
    enum Status {
      eUnknown = 0,
      eExists,
      eInDAQ,
      eDeSelected, // for example too far away for simulations
      eNoise,
      eBadCalibration,
      eHasData
    };
    
  public:
    ComponentSelector(const Status status = eHasData);
    bool operator()(const Eye& comp) const;
    bool operator()(const Telescope& comp) const;
    bool operator()(const Pixel& comp) const;
    
  private:
    Status fMinStatus;
  };
  
} // end namespace fevt

#endif