internal static DataPoint GetDataPoint(Type dataPointType, Transaction transaction, decimal total)
{
DataPoint dataPoint = null;
if (dataPointType == typeof(LineChartDataPoint))
{
dataPoint = new LineChartDataPoint
{
X = transaction.Date,
Y = total,
};
}
else if (dataPointType == typeof(PieChartDataPoint))
{
dataPoint = new PieChartDataPoint
{
Name = transaction.Payee,
Value = transaction.Amount,
};
}
else
{
throw new ArgumentException($"Invalid Data Point Type {dataPointType}");
}
return(dataPoint);
}
protected override void LoadDataPoints()
{
Application.Current.Dispatcher.Invoke(() =>
{
DataFilter filter = GetFilter(ReportType);
DataPoints.Clear();
var dataPoints = filter.Filter <PieChartDataPoint>(_dataModel.Transactions, StartDate, EndDate);
foreach (var dataPoint in dataPoints)
{
DataPoint existingDataPoint = GetDataPoint(dataPoint.Name);
if (existingDataPoint != null)
{
PieChartDataPoint newDataPoint = new PieChartDataPoint
{
Name = dataPoint.Name,
Value = ((PieChartDataPoint)existingDataPoint).Value += dataPoint.Value,
};
DataPoints.Remove(existingDataPoint);
DataPoints.Add(newDataPoint);
}
else
{
DataPoints.Add(dataPoint);
}
}
});
}