ShrlAlgoToolkit/ShrlAlgoToolkit.RevitCore/Assists/OnProjectDocument.cs

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

namespace ShrlAlgoToolkit.RevitCore.Assists;

/// <summary>
/// 项目文档可用
/// </summary>
public class OnProjectDocument : IExternalCommandAvailability
{
    public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
    {
        var doc = applicationData?.ActiveUIDocument?.Document;
        if (doc != null) { return !doc.IsFamilyDocument; }
        return false;
        
    }
}