berryISelectionListener.h

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

BlueBerry Platform

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 BERRYISELECTIONLISTENER_H_
#define BERRYISELECTIONLISTENER_H_

#include <berryMessage.h>

#include <org_blueberry_ui_qt_Export.h>

#include "berryIWorkbenchPart.h"
#include "berryISelection.h"

namespace berry
{

struct BERRY_UI_QT ISelectionListener
{

  struct Events
  {

    Message2<const IWorkbenchPart::Pointer&, const ISelection::ConstPointer&>
        selectionChanged;

    void AddListener(ISelectionListener* listener);
    void RemoveListener(ISelectionListener* listener);

    typedef MessageDelegate2<ISelectionListener, const IWorkbenchPart::Pointer&,
        const ISelection::ConstPointer&> Delegate;
  };

  virtual ~ISelectionListener();

  virtual void SelectionChanged(const IWorkbenchPart::Pointer& part,
                                const ISelection::ConstPointer& selection) = 0;
};

template<typename R>
struct SelectionChangedAdapter: public ISelectionListener
{

  typedef R Listener;
  typedef void
      (R::*Callback)(const IWorkbenchPart::Pointer&, const ISelection::ConstPointer&);

  SelectionChangedAdapter(R* l, Callback c) :
    listener(l), callback(c)
  {
    poco_assert(listener);
    poco_assert(callback);
  }

  void SelectionChanged(const IWorkbenchPart::Pointer& part, const ISelection::ConstPointer& selection) override
  {
    (listener->*callback)(part, selection);
  }

private:

  Listener* listener;
  Callback callback;
};

}

#endif /*BERRYISELECTIONLISTENER_H_*/