/// <summary>
/// Initializes a new instance of the <see cref="SlideChart" /> class.
/// </summary>
internal SlideChart(P.GraphicFrame pGraphicFrame, SCSlide slide) :
base(slide, pGraphicFrame)
{
_pGraphicFrame = pGraphicFrame;
_firstSeries = new Lazy <OpenXmlElement>(GetFirstSeries);
_xValues = new Lazy <LibraryCollection <double> >(GetXValues);
_seriesCollection =
new Lazy <SeriesCollection>(() => Collections.SeriesCollection.Create(this, _cXCharts));
_categories = new Lazy <CategoryCollection>(() => CategoryCollection.Create(this, _firstSeries.Value, Type));
_chartType = new Lazy <ChartType>(GetChartType);
ChartWorkbook = new ChartWorkbook(this);
Init(); //TODO: convert to lazy loading
}