public static Range <T> Sum <T>(this IEnumerable <Range <T> > that)
where T : IComparable
{
Range <T> sum = new Range <T>();
IEnumerator <Range <T> > enumerator = that.GetEnumerator();
while (enumerator.MoveNext())
{
sum = sum.Add(enumerator.Current);
}
return(sum);
}
/// <summary>
/// Updates the actual range displayed on the axis.
/// </summary>
private void UpdateActualRange()
{
Action action = () =>
{
Range <IComparable> dataRange = new Range <IComparable>();
if (ProtectedMaximum == null || ProtectedMinimum == null)
{
if (Orientation == AxisOrientation.None)
{
if (ProtectedMinimum != null)
{
this.ActualRange = OverrideDataRange(new Range <IComparable>(ProtectedMinimum, ProtectedMinimum));
}
else
{
this.ActualRange = OverrideDataRange(new Range <IComparable>(ProtectedMaximum, ProtectedMaximum));
}
}
else
{
IEnumerable <Range <IComparable> > values =
this.RegisteredListeners
.OfType <IRangeProvider>()
.Select(rangeProvider => rangeProvider.GetRange(this));
foreach (Range <IComparable> range in values)
{
dataRange = dataRange.Add(range);
}
this.ActualRange = OverrideDataRange(dataRange);
}
}
else
{
this.ActualRange = new Range <IComparable>(ProtectedMinimum, ProtectedMaximum);
}
};
// Repeat this after layout pass.
if (this.ActualLength == 0.0)
{
#pragma warning disable 4014
this.Dispatcher.RunAsync(CoreDispatcherPriority.High, new DispatchedHandler(action));
#pragma warning restore 4014
}
action();
}