mitkDispatcher.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 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);
    ~Dispatcher() override;
 
  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