EnumHostSetting.cs

using System;
using Waher.Persistence.Attributes;
using Waher.Runtime.Inventory;
 
namespace Waher.Runtime.Settings.HostSettingObjects
{
    public class EnumHostSetting : HostSetting
    {
        private Enum value = null;
        private Type enumType = null;
        private string enumTypeName = string.Empty;
        private string enumValue = string.Empty;
 
        public EnumHostSetting()
        {
        }
 
        public EnumHostSetting(string Host, string Key, Enum Value)
            : base(Host, Key)
        {
            this.Value = Value;
        }
 
        [IgnoreMember]
        public Enum Value
        {
            get
            {
                if (this.value is null)
                    this.value = (Enum)Enum.Parse(this.enumType, this.enumValue);
 
                return this.value;
            }
 
            set
            {
                this.enumType = value.GetType();
                this.enumTypeName = this.enumType.FullName;
                this.enumValue = value.ToString();
                this.value = null;
            }
        }
 
        [DefaultValueStringEmpty]
        public string EnumTypeName
        {
            get => this.enumTypeName;
            set
            {
                this.enumType = Types.GetType(value);
                if (this.enumType is null)
                    throw new InvalidOperationException("Enumeration type not recognized by " + typeof(Types).Namespace + ": " + value);
 
                this.enumTypeName = value;
                this.value = null;
            }
        }
 
        [DefaultValueStringEmpty]
        public string EnumValue
        {
            get => this.enumValue;
            set
            {
                this.enumValue = value;
                this.value = null;
            }
        }
 
        public override object GetValueObject()
        {
            return this.Value;
        }
    }
}