berryIPropertyChangeListener.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 BERRYIPROPERTYCHANGELISTENER_H_
#define BERRYIPROPERTYCHANGELISTENER_H_
 
#include <berryMacros.h>
#include <berryMessage.h>
 
#include <org_blueberry_ui_qt_Export.h>
#include "berryPropertyChangeEvent.h"
 
namespace berry
{
 
struct BERRY_UI_QT IPropertyChangeListener
{
 
  virtual ~IPropertyChangeListener();
 
  struct BERRY_UI_QT Events {
 
    typedef Message1<const PropertyChangeEvent::Pointer&> EventType;
 
    EventType propertyChange;
 
    void AddListener(IPropertyChangeListener* listener);
    void RemoveListener(IPropertyChangeListener* listener);
 
  private:
 
    typedef MessageDelegate1<IPropertyChangeListener, const PropertyChangeEvent::Pointer&> Delegate;
  };
 
  virtual void PropertyChange(const PropertyChangeEvent::Pointer& event);
 
  virtual void PropertyChange(const Object::Pointer& /*source*/, int /*propId*/) {}
};
 
template<typename R>
struct PropertyChangeAdapter : public IPropertyChangeListener
{
 
  typedef R Listener;
  typedef void
      (R::*Callback)(const PropertyChangeEvent::Pointer&);
 
  PropertyChangeAdapter(R* l, Callback c) :
    listener(l), callback(c)
  {
    poco_assert(listener);
    poco_assert(callback);
  }
 
  using IPropertyChangeListener::PropertyChange;
 
  void PropertyChange(const PropertyChangeEvent::Pointer& event) override
  {
    (listener->*callback)(event);
  }
 
private:
 
  Listener* listener;
  Callback callback;
};
 
template<typename R>
struct PropertyChangeIntAdapter: public IPropertyChangeListener
{
 
  typedef R Listener;
  typedef void
      (R::*Callback)(const Object::Pointer&, int);
 
  PropertyChangeIntAdapter(R* l, Callback c) :
    listener(l), callback(c)
  {
    poco_assert(listener);
    poco_assert(callback);
  }
 
  using IPropertyChangeListener::PropertyChange;
 
  void PropertyChange(const Object::Pointer& source, int propId) override
  {
    (listener->*callback)(source, propId);
  }
 
private:
 
  Listener* listener;
  Callback callback;
};
 
}
 
#endif /* BERRYIPROPERTYCHANGELISTENER_H_ */