WeakReference.h

#include <QWeakPointer>
 
namespace knowCore
{
  template<typename _TOwner_>
  class WeakReference;
  template<typename _TOwner_>
  inline uint qHash(const WeakReference<_TOwner_>& key, std::size_t seed = 0);
  template<typename _TOwner_>
  class WeakReference
  {
    friend _TOwner_;
    friend uint qHash<>(const WeakReference<_TOwner_>&, std::size_t);
  public:
    WeakReference() {}
    WeakReference(const _TOwner_& _t) : d(_t.d) {}
    bool operator==(const WeakReference<_TOwner_>& _rhs) const { return d == _rhs.d; }
  private:
    QWeakPointer<typename _TOwner_::Private> d;
  };
  template<typename _TOwner_>
  inline uint qHash(const WeakReference<_TOwner_>& key, std::size_t seed)
  {
    return ::qHash(key.d.toStrongRef().data(), seed);
  }
} // namespace knowCore