static IPortModel GetFirstPortModelOfType(TypeHandle typeHandle, IEnumerable <IPortModel> portModels, bool fallbackToFirstPort)
{
Stencil stencil = portModels.First().VSGraphModel.Stencil;
IPortModel unknownPortModel = null;
// Return the first matching Input portModel
// If no match was found, return the first Unknown typed portModel
// Else return null.
foreach (IPortModel portModel in portModels)
{
if (portModel.DataTypeHandle == TypeHandle.Unknown && unknownPortModel == null)
{
unknownPortModel = portModel;
}
if (typeHandle.IsAssignableFrom(portModel.DataTypeHandle, stencil))
{
return(portModel);
}
}
if (unknownPortModel != null)
{
return(unknownPortModel);
}
return(fallbackToFirstPort ? portModels.FirstOrDefault() : null);
}