/// <summary>
/// Updates the values of the rating items.
/// </summary>
private void UpdateValues()
{
IList <RatingItem> ratingItems = GetRatingItems().ToList();
RatingItem oldSelectedItem = this.GetSelectedRatingItem();
IEnumerable <Tuple <RatingItem, double> > itemAndWeights =
EnumerableFunctions
.Zip(
ratingItems,
ratingItems
.Select(ratingItem => 1.0)
.GetWeightedValues(WeightedValue),
(item, percent) => Tuple.Create(item, percent));
foreach (Tuple <RatingItem, double> itemAndWeight in itemAndWeights)
{
itemAndWeight.Item1.Value = itemAndWeight.Item2;
}
RatingItem newSelectedItem = this.GetSelectedRatingItem();
if (HoveredRatingItem == null)
{
DisplayValue = WeightedValue;
}
}
/// <summary>
/// Calculates the length of the data points.
/// </summary>
protected void CalculateDataPointLength()
{
if (!(ActualIndependentAxis is ICategoryAxis))
{
IEnumerable <UnitValue> values =
ActiveDataPoints
.Select(dataPoint => ActualIndependentAxis.GetPlotAreaCoordinate(dataPoint.ActualIndependentValue))
.Where(value => ValueHelper.CanGraph(value.Value))
.OrderBy(value => value.Value)
.ToList();
_dataPointlength =
EnumerableFunctions.Zip(
values,
values.Skip(1),
(left, right) => new Range <double>(left.Value, right.Value))
.Select(range => range.Maximum - range.Minimum)
.MinOrNullable();
}
}
/// <summary>
/// Updates the value and actual value of the rating items.
/// </summary>
private void UpdateDisplayValues()
{
IList <RatingItem> ratingItems = GetRatingItems().ToList();
IEnumerable <Tuple <RatingItem, double> > itemAndWeights =
EnumerableFunctions
.Zip(
ratingItems,
ratingItems
.Select(ratingItem => 1.0)
.GetWeightedValues(WeightedValue),
(item, percent) => Tuple.Create(item, percent));
RatingItem selectedItem = null;
Tuple <RatingItem, double> selectedItemAndWeight = itemAndWeights.LastOrDefault(i => i.Item2 > 0.0);
if (selectedItemAndWeight != null)
{
selectedItem = selectedItemAndWeight.Item1;
}
else
{
selectedItem = GetSelectedRatingItem();
}
foreach (Tuple <RatingItem, double> itemAndWeight in itemAndWeights)
{
if (SelectionMode == RatingSelectionMode.Individual && itemAndWeight.Item1 != selectedItem)
{
itemAndWeight.Item1.DisplayValue = 0.0;
}
else
{
itemAndWeight.Item1.DisplayValue = itemAndWeight.Item2;
}
}
}
