Observer.hpp

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#ifndef DART_COMMON_OBSERVER_HPP_
#define DART_COMMON_OBSERVER_HPP_
 
#include <set>
 
namespace dart {
namespace common {
 
class Subject;
 
class Observer
{
public:
  friend class Subject;
 
  virtual ~Observer();
 
protected:
  void receiveDestructionNotification(const Subject* _subject);
 
  virtual void handleDestructionNotification(const Subject* _subject);
 
  void addSubject(const Subject* _subject);
 
  void removeSubject(const Subject* _subject);
 
  void removeAllSubjects();
 
  std::set<const Subject*> mSubjects;
};
 
} // namespace common
} // namespace dart
 
#endif // DART_COMMON_OBSERVER_HPP_