mitkDisplayActionEventHandler.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 MITKDISPLAYACTIONEVENTHANDLER_H
#define MITKDISPLAYACTIONEVENTHANDLER_H

#include <MitkCoreExports.h>

// mitk core
#include "mitkDisplayActionEventBroadcast.h"
#include "mitkDisplayActionEvents.h"
#include "mitkStdFunctionCommand.h"

namespace mitk
{
  class MITKCORE_EXPORT DisplayActionEventHandler
  {
  public:

    using OberserverTagType = unsigned long;

    virtual ~DisplayActionEventHandler();

    void SetObservableBroadcast(DisplayActionEventBroadcast* observableBroadcast);

    OberserverTagType ConnectDisplayActionEvent(const DisplayActionEvent& displayActionEvent,
      const StdFunctionCommand::ActionFunction& actionFunction,
      const StdFunctionCommand::FilterFunction& filterFunction = [](const itk::EventObject&) { return true; });

    void DisconnectObserver(OberserverTagType observerTag);

    const std::vector<OberserverTagType>& GetAllObserverTags() { return m_ObserverTags; }

    void InitActions();

  protected:

    virtual void InitActionsImpl() { }

    WeakPointer<DisplayActionEventBroadcast> m_ObservableBroadcast;
    std::vector<OberserverTagType> m_ObserverTags;

  };

} // end namespace mitk

#endif // MITKDISPLAYACTIONEVENTHANDLER_H