mitkDispatcher.h

Go to the documentation of this file.

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

 The Medical Imaging Interaction Toolkit (MITK)

 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 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 or http://www.mitk.org for details.

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

#ifndef mitkDispatcher_h
#define mitkDispatcher_h

#include "itkLightObject.h"
#include "itkObjectFactory.h"
#include "mitkCommon.h"
#include "mitkDataInteractor.h"
#include "mitkDataNode.h"
#include "usServiceTracker.h"
#include <MitkCoreExports.h>
#include <list>
#include <mitkWeakPointer.h>

namespace mitk
{
  class InternalEvent;
  class InteractionEvent;
  struct InteractionEventObserver;

  class MITKCORE_EXPORT Dispatcher : public itk::LightObject
  {
  public:
    mitkClassMacroItkParent(Dispatcher, itk::LightObject);
    mitkNewMacro1Param(Self, const std::string &);

    typedef std::list<mitk::WeakPointer<DataInteractor>> ListInteractorType;
    typedef std::list<itk::SmartPointer<InteractionEvent>> ListEventsType;

    bool ProcessEvent(InteractionEvent *event);

    void QueueEvent(InteractionEvent *event);

    void AddDataInteractor(const DataNode *dataNode);
    void RemoveDataInteractor(const DataNode *dataNode);
    size_t GetNumberOfInteractors(); // DEBUG TESTING

  protected:
    Dispatcher(const std::string &rendererName);
    virtual ~Dispatcher();

  private:
    ListInteractorType m_Interactors;
    ListEventsType m_QueuedEvents;

    void RemoveOrphanedInteractors();

    ProcessEventMode m_ProcessingMode;
    mitk::WeakPointer<DataInteractor> m_SelectedInteractor;

    void SetEventProcessingMode(DataInteractor *);

    bool HandleInternalEvent(InternalEvent *internalEvent);

    us::ServiceTracker<InteractionEventObserver> *m_EventObserverTracker;
  };

} /* namespace mitk */
#endif /* mitkDispatcher_h */