using CaeMesh;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;

namespace RBFMorphing
{
    public class ViewNodeSet
    {
        private readonly FeMesh _mesh;

        public ViewNodeSet(FeMesh mesh)
        {
            _mesh = mesh;
        }

        [Category("节点集合")]
        [DisplayName("名称")]
        [Description("指定节点集合名称")]
        [TypeConverter(typeof(NameListConverter))]
        public string Name { get; set; }

        [Browsable(false)]
        public List<string> NameList
        {
            get
            {
                if (_mesh != null && _mesh.NodeSets.Count > 0)
                {
                    return _mesh.NodeSets
                        .Select(kvp => kvp.Value)
                        .Where(n => !n.Internal) // 不显示内部节点集合
                        .Select(n => n.Name)
                        .OrderBy(x => x)
                        .ToList();
                }

                return null;
            }
        }

        class NameListConverter : TypeConverter
        {
            public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
            {
                return true;
            }

            public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
            {
                List<string> list;

                // ReSharper disable once SuspiciousTypeConversion.Global
                if (context.Instance is ViewNodeSet nodeSet)
                    list = nodeSet.NameList;
                else
                    list = null;

                return new StandardValuesCollection(list);
            }
        }
    }
}