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// $Id: G4AttFilterUtils.hh,v 1.2 2006/12/13 15:49:58 gunter Exp $
// GEANT4 tag $Name:  $
//
// Visualisation attribute filter utility functions.
//
// Jane Tinslay, September 2006
//
#ifndef G4ATTFILTERUTILS_HH
#define G4ATTFILTERUTILS_HH

class G4AttDef;
class G4TypeKey;
class G4VAttValueFilter;
template <typename A, typename B, typename C> class G4CreatorFactoryT;

namespace G4AttFilterUtils {
    
  typedef G4CreatorFactoryT<G4VAttValueFilter, G4TypeKey, G4VAttValueFilter*(*)()> G4AttValueFilterFactory;

  // G4AttValue filter factory  
  G4AttValueFilterFactory* GetAttValueFilterFactory();
  
  // Create new G4AttValue filter 
  G4VAttValueFilter* GetNewFilter(const G4AttDef& def);
}

#endif
