mlBackgroundTaskMessage.h

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/*************************************************************************************
**
** Copyright 2009, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef ML_BACKGROUND_TASK_MESSAGE_H
#define ML_BACKGROUND_TASK_MESSAGE_H
 
// Local includes
#include "MLBackgroundTasksSystem.h"
 
ML_START_NAMESPACE
 
//-----------------------------------------------------------------------
class BackgroundTask;

class MLBACKGROUNDTASKS_EXPORT BackgroundTaskMessageReceiver {
public:
  BackgroundTaskMessageReceiver();
  ~BackgroundTaskMessageReceiver();
};
 
//-----------------------------------------------------------------------
class MLBACKGROUNDTASKS_EXPORT BackgroundTaskMessage {
public:
  BackgroundTaskMessage();
  virtual ~BackgroundTaskMessage() {}

  void setSender(BackgroundTask* task) { _sender = task; }

  BackgroundTask* sender() { return _sender; }

  void setReceiver(BackgroundTaskMessageReceiver* receiverArg) { _receiver = receiverArg; }

  BackgroundTaskMessageReceiver* receiver() { return _receiver; }

  virtual void execute() = 0;

  virtual void executeSynchronous() { execute(); }

  virtual bool finishedProcessing() { return true; }

  virtual void taskWillBeDestroyed();
 
private:
  BackgroundTask* _sender;
  BackgroundTaskMessageReceiver* _receiver;
};
 
//-----------------------------------------------------------------------
 
ML_END_NAMESPACE
 
#endif