berryIExecutionListener.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 BERRYIEXECUTIONLISTENER_H_
#define BERRYIEXECUTIONLISTENER_H_
 
#include <berryObject.h>
#include <berryMessage.h>
 
#include <org_blueberry_core_commands_Export.h>
#include "common/berryCommandExceptions.h"
 
namespace berry {
 
class ExecutionEvent;
 
struct BERRY_COMMANDS IExecutionListener
{
 
  struct Events {
 
    Message2<const QString&, const NotHandledException*> notHandled;
    Message2<const QString&, const ExecutionException*> postExecuteFailure;
    Message2<const QString&, const Object::Pointer&> postExecuteSuccess;
    Message2<const QString&, const SmartPointer<const ExecutionEvent>& > preExecute;
 
    virtual ~Events();
 
    virtual void AddListener(IExecutionListener* listener);
    virtual void RemoveListener(IExecutionListener* listener);
    virtual bool HasListeners() const;
    virtual bool IsEmpty() const;
 
    private:
 
    typedef MessageDelegate2<IExecutionListener, const QString&, const NotHandledException* > NotHandledDelegate;
    typedef MessageDelegate2<IExecutionListener, const QString&, const ExecutionException*> PostExecuteFailureDelegate;
    typedef MessageDelegate2<IExecutionListener, const QString&, const Object::Pointer&> PostExecuteSuccessDelegate;
    typedef MessageDelegate2<IExecutionListener, const QString&, const SmartPointer<const ExecutionEvent>& > PreExecuteDelegate;
  };
 
  virtual ~IExecutionListener();
 
  virtual void NotHandled(const QString& commandId, const NotHandledException* exception) = 0;
 
  virtual void PostExecuteFailure(const QString& commandId,
      const ExecutionException* exception) = 0;
 
  virtual void PostExecuteSuccess(const QString& commandId, const Object::Pointer& returnValue) = 0;
 
  virtual void PreExecute(const QString& commandId, const SmartPointer<const ExecutionEvent>& event) = 0;
};
 
}
 
#endif /* BERRYIEXECUTIONLISTENER_H_ */