usServiceListenerHook.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 USSERVICELISTENERHOOK_H
#define USSERVICELISTENERHOOK_H
 
#include <usServiceInterface.h>
#include <usShrinkableVector.h>
#include <usSharedData.h>
 
#include <string>
 
namespace us {
 
class ModuleContext;
class ServiceListenerEntry;
 
struct MITKCPPMICROSERVICES_EXPORT ServiceListenerHook
{
 
  class ListenerInfoData;
 
  struct MITKCPPMICROSERVICES_EXPORT ListenerInfo
  {
    ListenerInfo();
 
    ListenerInfo(const ListenerInfo& other);
 
    ~ListenerInfo();
 
    ListenerInfo& operator=(const ListenerInfo& other);
 
    bool IsNull() const;
 
    ModuleContext* GetModuleContext() const;
 
    std::string GetFilter() const;
 
    bool IsRemoved() const;
 
    bool operator==(const ListenerInfo& other) const;
 
  private:
 
    friend class ServiceListenerEntry;
 
    friend struct std::hash<ServiceListenerHook::ListenerInfo>;
 
    ListenerInfo(ListenerInfoData* data);
 
    ExplicitlySharedDataPointer<ListenerInfoData> d;
  };
 
  virtual ~ServiceListenerHook();
 
  virtual void Added(const std::vector<ListenerInfo>& listeners) = 0;
 
  virtual void Removed(const std::vector<ListenerInfo>& listeners) = 0;
 
};
 
}
 
namespace std {
template<> struct hash<us::ServiceListenerHook::ListenerInfo> { std::size_t operator()(const us::ServiceListenerHook::ListenerInfo& arg) const {
  return std::hash<const us::ServiceListenerHook::ListenerInfoData*>()(arg.d.Data());
} };
}
 
#endif // USSERVICELISTENERHOOK_H