usServiceReference.h

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/*============================================================================
 
The Medical Imaging Interaction Toolkit (MITK)
 
Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.
 
Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.
 
============================================================================*/
 
#ifndef USSERVICEREFERENCE_H
#define USSERVICEREFERENCE_H
 
#include <usServiceInterface.h>
#include <usServiceReferenceBase.h>
 
namespace us {
 
template<class S>
class ServiceReference : public ServiceReferenceBase {
 
public:
 
  typedef S ServiceType;
 
  ServiceReference() : ServiceReferenceBase()
  {
  }
 
  ServiceReference(const ServiceReferenceBase& base)
    : ServiceReferenceBase(base)
  {
    const std::string interfaceId(us_service_interface_iid<S>());
    if (GetInterfaceId() != interfaceId)
    {
      if (this->IsConvertibleTo(interfaceId))
      {
        this->SetInterfaceId(interfaceId);
      }
      else
      {
        this->operator =(0);
      }
    }
  }
 
  ServiceReference(const ServiceReference&) = default;
  ServiceReference& operator=(const ServiceReference&) = default;
 
  using ServiceReferenceBase::operator=;
 
};
 
template<>
class ServiceReference<void> : public ServiceReferenceBase
{
 
public:
 
  ServiceReference() : ServiceReferenceBase()
  {
  }
 
  ServiceReference(const ServiceReferenceBase& base)
    : ServiceReferenceBase(base)
  {
  }
 
  ServiceReference(const ServiceReference&) = default;
  ServiceReference& operator=(const ServiceReference&) = default;
 
  using ServiceReferenceBase::operator=;
 
  typedef void ServiceType;
};
 
typedef ServiceReference<void> ServiceReferenceU;
 
}
 
#endif // USSERVICEREFERENCE_H