#ifndef ABSOBSERVEDGEOMETER_HPP
#define ABSOBSERVEDGEOMETER_HPP
//
// $Id: absObservedGeometer.hpp,v 1.1 2001/06/14 19:10:00 hobbs Exp $
//
// File: absObservedGEometer.hpp
// Purpose: 
// Created: 14-JUN-2001   unknown
//
// $Revision: 1.1 $
//
//

// Include files
#include <vector>

// Global definitions
namespace dgs {

class GeometryObserver;

class absObservedGeometer {
public:

  absObservedGeometer() {}
  ~absObservedGeometer();

protected:

  /// Let all registered observers know that a new geometry is here
  void notify_observers();

private:
  friend class GeometryObserver;

  /// Register a new observer.   Called by GeometryObserver constructor
  void add_observer(GeometryObserver*);

  /// Unregister an observer
  void remove_observer(GeometryObserver*);

  /// Here are the currently registered observers
  std::vector<GeometryObserver*> d_observers;
};

}
#endif //ABSOBSERVEDGEOMETER_HPP