/// <summary>
/// Updates the ISeriesHost legend items collection to reflect changes in any
/// of the series legend items collections.
/// </summary>
/// <param name="sender">The series that had its legend items collection
/// change.</param>
/// <param name="args">Information about what changes were made to the
/// collection.</param>
private void OnSeriesLegendItemsChanged(object sender, NotifyCollectionChangedEventArgs args)
{
ReadOnlyObservableCollection <UIElement> chartLegendItems = LegendItems as ReadOnlyObservableCollection <UIElement>;
if (args.OldItems != null)
{
foreach (UIElement item in args.OldItems)
{
chartLegendItems.Mutate((items) => items.Remove(item));
}
}
if (args.NewItems != null)
{
foreach (UIElement item in args.NewItems)
{
chartLegendItems.Mutate((items) => items.Add(item));
}
}
}
