public CoordinateConversionViewModel()
        {
            OCView = new OutputCoordinateView();

            // set default CoordinateGetter
            coordinateGetter = new CoordinateGetBase();

            Mediator.Register(CoordinateConversionLibrary.Constants.RequestOutputUpdate, OnUpdateOutputs);
            Mediator.Register(CoordinateConversionLibrary.Constants.SelectSpatialReference, OnSelectSpatialReference);
        }
 public void SetCoordinateGetter(CoordinateGetBase coordGetter)
 {
     coordinateGetter = coordGetter;
 }