#region License Information (GPL v3)

/*
    ShareX - A program that allows you to take screenshots and share any file type
    Copyright © 2007-2015 ShareX Developers

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

    Optionally you can also view the license at <http://www.gnu.org/licenses/>.
*/

#endregion License Information (GPL v3)

using System;
using System.ComponentModel;
using System.Globalization;
using System.Reflection;

namespace ShareX.HelpersLib
{
    public class EnumDescriptionConverter : EnumConverter
    {
        private Type enumType;

        public EnumDescriptionConverter(Type type)
            : base(type)
        {
            enumType = type;
        }

        public override bool CanConvertTo(ITypeDescriptorContext context, Type destType)
        {
            return destType == typeof(string);
        }

        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destType)
        {
            return ((Enum)value).GetDescription();
        }

        public override bool CanConvertFrom(ITypeDescriptorContext context, Type srcType)
        {
            return srcType == typeof(string);
        }

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
        {
            foreach (FieldInfo fi in enumType.GetFields())
            {
                DescriptionAttribute da = (DescriptionAttribute)Attribute.GetCustomAttribute(fi, typeof(DescriptionAttribute));

                if (da != null && da.Description == (string)value)
                {
                    return Enum.Parse(enumType, fi.Name);
                }
            }

            return Enum.Parse(enumType, (string)value);
        }
    }
}