/// <summary>
/// Handles the CollectionChanged event of the PointsSource control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="NotifyCollectionChangedEventArgs"/> instance containing the event data.</param>
void PointsSource_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
double xValue = GetReflectionValue(XPath, PointsSource, XValues.Count + 1);
double yValue = GetReflectionValue(YPath, PointsSource, YValues.Count + 1);
XValues.Add(xValue);
YValues.Add(xValue);
Points.Add(new ChartPoint()
{
XValue = xValue, YValue = yValue
});
TotalYValues = YValues.Sum();
}
else if (e.Action == NotifyCollectionChangedAction.Remove)
{
IList oldItems = e.OldItems;
double oldXValue = GetReflectionValueFromItem(XPath, oldItems[0]);
int index = XValues.IndexOf(oldXValue);
XValues.RemoveAt(index);
YValues.RemoveAt(index);
Points.RemoveAt(index);
TotalYValues = YValues.Sum();
}
else if (e.Action == NotifyCollectionChangedAction.Reset)
{
Points.Clear();
GeneratePointsFromSource();
}
}