//
// ********************************************************************
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//
//
// $Id: G4LogicalVolumeStore.hh,v 1.7 2002/04/19 08:20:18 gcosmo Exp $
// GEANT4 tag $Name: geant4-05-00 $
//
// class G4LogicalVolumeStore
//
// Class description:
//
// Container for all LogicalVolumes, with functionality derived from
// std::vector<T>. The class is a `singleton', in that only
// one can exist, and access is provided via the static function
// G4LogicalVolumeStore::GetInstance()
//
// All LogicalVolumes should be registered with G4LogicalVolumeStore,
// and removed on their destruction. Intended principally for UI browser.
// The underlying container initially has a capacity of 100.
//
// If much additional functionality is added, should consider containment
// instead of inheritance for std::vector<T>.
//
// Member data:
//
// static G4LogicalVolumeStore* fgInstance
//   - Ptr to the single G4LogicalVolumeStore.

// History:
// 18.04.01 G.Cosmo Migrated to STL vector
// 10.07.95 P.Kent  Initial version

#ifndef G4VLOGICALVOLUMESTORE_HH
#define G4VLOGICALVOLUMESTORE_HH

#include "g4std/vector"

#include "G4LogicalVolume.hh"

class G4LogicalVolumeStore : public G4std::vector<G4LogicalVolume*>
{
  public:  // with description

    static void Register(G4LogicalVolume* pVolume);
      // Add the logical volume to the collection.
    static void DeRegister(G4LogicalVolume* pVolume);
      // Remove the logical volume from the collection.
    static G4LogicalVolumeStore* GetInstance();
      // Get a ptr to the unique G4LogicalVolumeStore, creating it if necessary.
    static void Clean();
      // Delete all volumes from the store.

    virtual ~G4LogicalVolumeStore();
      // Destructor: takes care to delete allocated logical volumes.

  protected:

    G4LogicalVolumeStore();

  private:

    static G4LogicalVolumeStore* fgInstance;
    static G4bool locked;
};

#endif