Mesen2/UI/Controls/EnumRadioButton.cs

using Avalonia;
using Avalonia.Controls;
using System;
using System.Linq;
using Avalonia.Styling;
using Avalonia.Data;
using Avalonia.Interactivity;
using Mesen.Localization;

namespace Mesen.Controls
{
	public class EnumRadioButton : RadioButton
	{
		protected override Type StyleKeyOverride => typeof(RadioButton);

		public static readonly StyledProperty<Enum> ValueProperty = AvaloniaProperty.Register<EnumRadioButton, Enum>(nameof(Value), defaultBindingMode: BindingMode.TwoWay);
		public static readonly StyledProperty<Enum> CheckedWhenProperty = AvaloniaProperty.Register<EnumRadioButton, Enum>(nameof(CheckedWhen));

		public Enum Value
		{
			get { return GetValue(ValueProperty); }
			set { SetValue(ValueProperty, value); }
		}

		public Enum CheckedWhen
		{
			get { return GetValue(CheckedWhenProperty); }
			set { SetValue(CheckedWhenProperty, value); }
		}

		static EnumRadioButton()
		{
			ValueProperty.Changed.AddClassHandler<EnumRadioButton>((x, e) => {
				x.IsChecked = x.Value?.Equals(x.CheckedWhen) == true;
			});

			CheckedWhenProperty.Changed.AddClassHandler<EnumRadioButton>((x, e) => {
				x.IsChecked = x.Value?.Equals(x.CheckedWhen) == true;
			});
		}

		public EnumRadioButton()
		{
		}

		protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
		{
			base.OnAttachedToVisualTree(e);
			IsChecked = Value.Equals(CheckedWhen);
			if(Content == null) {
				Content = ResourceHelper.GetEnumText(CheckedWhen);
			}
		}

		protected override void OnIsCheckedChanged(RoutedEventArgs e)
		{
			base.OnIsCheckedChanged(e);
			if(IsChecked == true) {
				Value = CheckedWhen;
			}
		}
	}
}