osu/osu.Game/Overlays/Options/OptionEnumDropDown.cs

33 lines
1.1 KiB
C#

// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Reflection;
using System.ComponentModel;
using System.Collections.Generic;
namespace osu.Game.Overlays.Options
{
public class OptionEnumDropDown<T> : OptionDropDown<T>
{
public OptionEnumDropDown()
{
if (!typeof(T).IsEnum)
throw new InvalidOperationException("OptionsDropdown only supports enums as the generic type argument");
List<KeyValuePair<string, T>> items = new List<KeyValuePair<string, T>>();
foreach(var val in (T[])Enum.GetValues(typeof(T)))
{
var field = typeof(T).GetField(Enum.GetName(typeof(T), val));
items.Add(
new KeyValuePair<string, T>(
field.GetCustomAttribute<DescriptionAttribute>()?.Description ?? Enum.GetName(typeof(T), val),
val
)
);
}
Items = items;
}
}
}