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osu-lazer/osu.Game/Graphics/UserInterface/OsuEnumDropdown.cs
2018-04-13 18:26:38 +09:00

33 lines
1.1 KiB
C#

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.ComponentModel;
using System.Reflection;
using System.Collections.Generic;
namespace osu.Game.Graphics.UserInterface
{
public class OsuEnumDropdown<T> : OsuDropdown<T>
{
public OsuEnumDropdown()
{
if (!typeof(T).IsEnum)
throw new InvalidOperationException("OsuEnumDropdown 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;
}
}
}