EnumAttribute.cs

using System;
using System.Xml;
using Waher.Script;
 
namespace Waher.Layout.Layout2D.Model.Attributes
{
    public class EnumAttribute<TEnum> : Attribute<TEnum>
        where TEnum : struct
    {
        public EnumAttribute(string AttributeName, TEnum Value, Layout2DDocument Document)
            : base(AttributeName, Value, Document)
        {
        }
 
        public EnumAttribute(XmlElement E, string AttributeName, Layout2DDocument Document)
            : base(E, AttributeName, true, Document)
        {
        }
 
        public EnumAttribute(string AttributeName, Expression Expression, Layout2DDocument Document)
            : base(AttributeName, Expression, Document)
        {
        }
 
        public override bool TryParse(string StringValue, out TEnum Value)
        {
            return Enum.TryParse(StringValue, out Value);
        }
 
        public override string ToString(TEnum Value)
        {
            return Value.ToString();
        }
 
        public EnumAttribute<TEnum> CopyIfNotPreset(Layout2DDocument ForDocument)
        {
            if (this.HasPresetValue)
                return this;
            else
                return new EnumAttribute<TEnum>(this.Name, this.Expression, ForDocument);
        }
 
    }
}