#ifndef LineShiftFilter_H
#define LineShiftFilter_H

#include "AbstractNumberFilter.h"


class QString;


namespace Isis {
  class AbstractFilterSelector;
  class ControlCubeGraphNode;
  class ControlMeasure;
  class ControlPoint;

  /**
   * @brief Allows filtering by a control measure's line shift
   *
   * This class allows the user to filter control measures by their line shift
   * (i.e. how many lines they shifted in the image). This allows the user to
   * make a list of control measures that shifted by a certain amount in an
   * image after adjustment. The line shift is the difference between the
   * measure's line and a priori line.
   *
   * @author 2012-04-18 Jai Rideout
   *
   * @internal 
   *   @history 2017-07-25 Summer Stapleton - Removed the CnetViz namespace. Fixes #5054. 
   */
  class LineShiftFilter : public AbstractNumberFilter {
      Q_OBJECT

    public:
      LineShiftFilter(AbstractFilter::FilterEffectivenessFlag flag,
          int minimumForSuccess = -1);
      LineShiftFilter(const LineShiftFilter &other);
      virtual ~LineShiftFilter();

      bool evaluate(const ControlCubeGraphNode *) const;
      bool evaluate(const ControlPoint *) const;
      bool evaluate(const ControlMeasure *) const;

      AbstractFilter *clone() const;

      QString getImageDescription() const;
      QString getPointDescription() const;
      QString getMeasureDescription() const;
  };
}

#endif

