//
// ********************************************************************
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//
//
// $Id$
//
// 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 G4LOGICALVOLUMESTORE_HH
#define G4LOGICALVOLUMESTORE_HH

#include <vector>

#include "G4LogicalVolume.hh"
#include "G4VStoreNotifier.hh"

class G4LogicalVolumeStore : public std::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 SetNotifier(G4VStoreNotifier* pNotifier);
      // Assign a notifier for allocation/deallocation of the logical volumes.
    static void Clean();
      // Delete all volumes from the store.

    G4LogicalVolume* GetVolume(const G4String& name, G4bool verbose=true) const;
      // Return the pointer of the first volume in the collection having
      // that name.

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

  protected:

    G4LogicalVolumeStore();

  private:

    static G4LogicalVolumeStore* fgInstance;
    static G4VStoreNotifier* fgNotifier;
    static G4bool locked;
};

#endif