using System;

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;

namespace RevitAddin.Revit.Commands;
[Transaction(TransactionMode.Manual)]
public class Command : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
    {
        var doc = commandData.Application.ActiveUIDocument.Document;
        if (doc.IsFamilyDocument)
        {
            using (Transaction ts = new Transaction(doc, "删除空类型"))
            {
                ts.Start();
                var manager = doc.FamilyManager;
                foreach (FamilyType type in manager.Types)
                {
                    if (string.IsNullOrWhiteSpace(type.Name))
                    {
                        manager.CurrentType= type;
                        doc.Regenerate();
                        break;
                    }
                }
                manager.DeleteCurrentType();
                ts.Commit();
            }
        }
        return Result.Succeeded;
    }
}