berryISelectionListener.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 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_*/