#ifndef MG_UTIL_ENABLE_MASTER_PTR_H
#define MG_UTIL_ENABLE_MASTER_PTR_H

#include <vector>
#include <boost/shared_ptr.hpp>

namespace mgd
{

  template <class T>
  class enable_master_ptr
  {
    typedef std::vector< boost::shared_ptr<void> > dependent_objects_t;
    mutable boost::shared_ptr<dependent_objects_t> _dependent_objects;

  protected:
    enable_master_ptr()
    {
    }

    ~enable_master_ptr()
    {
    }

  public:

    template <class __T>
    boost::weak_ptr<__T> make_dependent_ptr( std::auto_ptr<__T> owned_object ) const
    {
      boost::shared_ptr<__T> object( owned_object );
      return make_dependent_ptr( object );
    }

    template <class __T>
    boost::weak_ptr<__T> make_dependent_ptr( boost::shared_ptr<__T> owned_object ) const
    {
      if (!_dependent_objects)
        _dependent_objects = boost::shared_ptr<dependent_objects_t>( new dependent_objects_t );

      _dependent_objects->push_back( owned_object );
      return owned_object;
    }
  };

};

#endif