SLAM-Cross/Views/SelectKeyWindow.axaml.cs

using Avalonia.Controls;
using Avalonia.Input;

namespace SlamCross.Views;

public partial class SelectKeyWindow : Window
{
    public string? ChosenKey { get; private set; }

    public SelectKeyWindow() => InitializeComponent();

    private void KeyBox_KeyDown(object? sender, KeyEventArgs e)
    {
        ChosenKey = MapKey(e.Key);
        if (this.FindControl<TextBox>("KeyBox") is TextBox box)
            box.Text = ChosenKey;
        e.Handled = true;
    }

    private void OK_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        if (this.FindControl<TextBox>("KeyBox") is TextBox box && !string.IsNullOrWhiteSpace(box.Text))
            ChosenKey = box.Text.Trim().ToUpper();
        Close();
    }

    private void Cancel_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        ChosenKey = null;
        Close();
    }

    private static string MapKey(Key key) => key switch
    {
        >= Key.D0 and <= Key.D9 => ((char)('0' + (key - Key.D0))).ToString(),
        Key.F1 => "F1", Key.F2 => "F2", Key.F3 => "F3", Key.F4 => "F4",
        Key.F5 => "F5", Key.F6 => "F6", Key.F7 => "F7", Key.F8 => "F8",
        Key.F9 => "F9", Key.F10 => "F10", Key.F11 => "F11", Key.F12 => "F12",
        Key.Insert => "INS", Key.Delete => "DEL",
        Key.Home => "HOME", Key.End => "END",
        Key.PageUp => "PGUP", Key.PageDown => "PGDN",
        Key.NumPad0 => "KP_INS", Key.NumPad1 => "KP_END",
        Key.NumPad2 => "KP_DOWNARROW", Key.NumPad3 => "KP_PGDN",
        Key.NumPad4 => "KP_LEFTARROW", Key.NumPad5 => "KP_5",
        Key.NumPad6 => "KP_RIGHTARROW", Key.NumPad7 => "KP_HOME",
        Key.NumPad8 => "KP_UPARROW", Key.NumPad9 => "KP_PGUP",
        Key.Multiply => "KP_MULTIPLY", Key.Add => "KP_PLUS",
        Key.Subtract => "KP_MINUS", Key.Divide => "KP_SLASH",
        Key.OemMinus => "MINUS", Key.OemPlus => "EQUALS",
        Key.OemOpenBrackets => "LBRACKET", Key.OemCloseBrackets => "RBRACKET",
        Key.OemSemicolon => "SEMICOLON", Key.OemQuotes => "APOSTROPHE",
        Key.OemBackslash => "BACKSLASH", Key.OemComma => "COMMA",
        Key.OemPeriod => "PERIOD",
        _ => key.ToString().ToUpper()
    };
}