SzmediTools/Szmedi.Toolkit.Revit/RvAssists/FuncFilter.cs

using Autodesk.Revit.DB;

using Autodesk.Revit.UI.Selection;

using System;

namespace Szmedi.Toolkit.RvAssists
{
    public class FuncFilter : ISelectionFilter
    {
        public FuncFilter(Func<Element, bool> funcElement, Func<Reference, XYZ, bool> funcReference = null)
        {
            this.funcElement = funcElement;
            this.funcReference = funcReference;
        }

        private readonly Func<Element, bool> funcElement;
        private readonly Func<Reference, XYZ, bool> funcReference;

        public bool AllowElement(Element elem)
        {
            return funcElement(elem);
        }

        public bool AllowReference(Reference reference, XYZ position)
        {
            return funcReference == null || funcReference(reference, position);
        }
    }
}