niftkInteractionEventObserverMutex.h

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/*=============================================================================

  NifTK: A software platform for medical image computing.

  Copyright (c) University College London (UCL). All rights reserved.

  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.

  See LICENSE.txt in the top level directory for details.

=============================================================================*/

#ifndef InteractionEventObserverMutex_h
#define InteractionEventObserverMutex_h

#include "niftkCoreExports.h"

#include <unordered_map>

namespace mitk
{
class InteractionEventObserver;
}

namespace niftk
{


class NIFTKCORE_EXPORT InteractionEventObserverMutex
{
public:

  static InteractionEventObserverMutex* GetInstance();

  void Lock(mitk::InteractionEventObserver* guardedObserver);

  void Unlock(mitk::InteractionEventObserver* guardedObserver);

private:

  InteractionEventObserverMutex();

  ~InteractionEventObserverMutex();

  void DeactivateOtherInteractionEventObservers();

  void ReactivateOtherInteractionEventObservers();

  mitk::InteractionEventObserver* m_GuardedObserver;

  std::unordered_map<mitk::InteractionEventObserver*, bool> m_StateOfOtherInteractionEventObservers;

};

}

#endif