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// $Id: G4VAttValueFilter.hh,v 1.2 2006/12/13 15:50:04 gunter Exp $
// GEANT4 tag $Name:  $
//
// Abstract base class for G4AttValue filters
//
// Jane Tinslay, September 2006
//
#ifndef G4VATTVALUEFILTER_HH
#define G4VATTVALUEFILTER_HH

#include "globals.hh"
#include "G4String.hh"
#include "G4VFilter.hh"

class G4AttValue;

class G4VAttValueFilter : public G4VFilter<G4AttValue> {

public:

  // Constructor
  G4VAttValueFilter(const G4String& name = "G4AttValueFilter")
    :G4VFilter<G4AttValue>(name){}

  // Destructor
  virtual ~G4VAttValueFilter() {}
  
  // Filter methods
  virtual G4bool Accept(const G4AttValue&) const = 0;
  virtual G4bool GetValidElement(const G4AttValue&, G4String&) const = 0;

  // Print configuration
  virtual void PrintAll(std::ostream& ostr) const = 0;
  
  // Reset 
  virtual void Reset() = 0;

  // Load filter data
  virtual void LoadIntervalElement(const G4String&) = 0;
  virtual void LoadSingleValueElement(const G4String&) = 0;

};

#endif