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/// \file electromagnetic/TestEm16/include/DetectorConstruction.hh
/// \brief Definition of the DetectorConstruction class
//
// $Id$
//
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#ifndef DetectorConstruction_h
#define DetectorConstruction_h 1

#include "G4VUserDetectorConstruction.hh"
#include "globals.hh"
#include "G4Cache.hh"

class G4Material;
class G4UserLimits;
class DetectorMessenger;
class G4GlobalMagFieldMessenger;

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class DetectorConstruction : public G4VUserDetectorConstruction
{
  public:

    DetectorConstruction();
   ~DetectorConstruction();

  public:

     virtual G4VPhysicalVolume* Construct();
     virtual void ConstructSDandField();

     void SetSize        (G4double);
     void SetMaterial    (G4String);
     void SetMaxStepSize (G4double);
     void SetMaxStepLength (G4double);

  public:

     const
     G4VPhysicalVolume* GetWorld()      {return fBox;};

     G4double           GetSize()       {return fBoxSize;};
     G4Material*        GetMaterial()   {return fMaterial;};

     void               PrintParameters();

  private:

     G4LogicalVolume*    fLBox;
     G4VPhysicalVolume*  fBox;

     G4double            fBoxSize;
     G4Material*         fMaterial;
     G4UserLimits*       fUserLimits;

     DetectorMessenger*  fDetectorMessenger;
     G4Cache<G4GlobalMagFieldMessenger*> fFieldMessenger;

  private:

     void               DefineMaterials();
     G4VPhysicalVolume* ConstructVolumes();
};

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#endif

