/// <summary>
/// Returns the type of axis than represents specified node. Not supported in <c>EPPlus</c> library.
/// </summary>
/// <param name="axis"><c>Xml</c> node than represent an axis definition.</param>
/// <param name="documentHelper">Target xml document helper.</param>
/// <returns>
/// A <see cref="KnownAxisType" /> value.
/// </returns>
/// <exception cref="T:System.ArgumentNullException">If <paramref name="axis" /> is <c>null</c>.</exception>
/// <exception cref="T:System.InvalidOperationException">If <paramref name="axis" /> is not an axis.</exception>
public static KnownAxisType ExtractAxisType(this XmlNode axis, IXmlHelper documentHelper)
{
SentinelHelper.ArgumentNull(axis, nameof(axis));
SentinelHelper.IsFalse(axis.Name.Contains("catAx") || axis.Name.Contains("valAx") || axis.Name.Contains("dateAx"), "Imposible extraer tipo. el nodo no es de tipo eje");
var idElement = documentHelper.GetXmlNode(axis, "c:axId");
var valueAttr = idElement.Attributes["val"];
var value = valueAttr.Value;
switch (value)
{
case "2":
return(KnownAxisType.PrimaryValueAxis);
case "3":
return(KnownAxisType.SecondaryCategoryAxis);
case "4":
return(KnownAxisType.SecondaryValueAxis);
default:
return(KnownAxisType.PrimaryCategoryAxis);
}
}
