mlFieldSensor.h

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/*************************************************************************************
**
** Copyright 2007, 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_FIELD_SENSOR_H
#define ML_FIELD_SENSOR_H
 
 
//ML-includes
#include "mlInitSystemML.h"
 
ML_START_NAMESPACE
 
class Field;
 
//------------------------------------------------------------------------------------
//------------------------------------------------------------------------------------
class MLEXPORT FieldSensor
{
 
public:
 
  enum Strength { NO_NOTIFICATION = 0, 
                  NO_CHANGE       = 1, 
                  CHANGED         = 2  
                };
 
  FieldSensor(MLSensorCB* callbackFunction, void* userData);
 
  virtual ~FieldSensor();
 
  void     callback(Strength notificationStrength=CHANGED);
 
  void     attachField(Field* field);
 
  void     detachField();
 
  Field* getField() const;
 
  Strength getNotificationStrength() const;
 
private:
  friend class Field;
 
  void     attachFieldInternal(Field* field);
 
  Field*        _attachedField;
 
  MLSensorCB*   _callbackFunc;
 
  void*         _userData;
 
  Strength      _notificationStrength;
};
 
 
ML_END_NAMESPACE
 
#endif // __mlFieldSensor_H