berryIHandlerListener.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 BERRYIHANDLERLISTENER_H_
#define BERRYIHANDLERLISTENER_H_
 
#include <berryMessage.h>
 
#include <org_blueberry_core_commands_Export.h>
 
namespace berry {
 
template<class T> class SmartPointer;
 
class HandlerEvent;
 
struct BERRY_COMMANDS IHandlerListener
{
 
  struct Events {
 
    typedef Message1<const SmartPointer<HandlerEvent>&> Event;
 
    Event handlerChanged;
 
    void AddListener(IHandlerListener* listener);
    void RemoveListener(IHandlerListener* listener);
 
  private:
    typedef MessageDelegate1<IHandlerListener, const SmartPointer<HandlerEvent>&> Delegate;
  };
 
  virtual ~IHandlerListener();
 
  virtual void HandlerChanged(const SmartPointer<HandlerEvent>& handlerEvent) = 0;
};
 
}
 
#endif /* BERRYIHANDLERLISTENER_H_ */