private void SetNextStepOfNormalizing(NormalizeActionTypes nextStep)
 {
     if (nextStep == NormalizeActionTypes.FreeCoefOrMoreThanZeroChanging)
     {
         SetNextStep(BeforLessThanChoice);
         return;
     }
     SetNextStep(_normalizeActionsSteps[nextStep]);
 }
 private string GetPosibleNormalizeActions(NormalizeActionTypes nextStep)
 {
     if (nextStep == NormalizeActionTypes.FreeCoefOrMoreThanZeroChanging)
         return _normalizeActionsLabels[NormalizeActionTypes.FreeCoefficientsChanging] + "|" +
             _normalizeActionsLabels[NormalizeActionTypes.MoreThanZeroChanging];
     return _normalizeActionsLabels[nextStep];
 }