inabox/inabox.wpf/Converters/FuncConverter.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace InABox.Wpf;

public class FuncConverter<TIn, TOut>(Func<TIn, TOut> convert, Func<TOut, TIn>? convertBack) : IValueConverter
{
    public Func<TIn, TOut> ConvertFunc { get; set; } = convert;

    public Func<TOut, TIn>? ConvertBackFunc { get; set; } = convertBack;

    public object? Convert(object? value, Type targetType, object parameter, CultureInfo culture)
    {
        if(value is TIn tIn)
        {
            return ConvertFunc(tIn);
        }
        return null;
    }

    public object? ConvertBack(object? value, Type targetType, object parameter, CultureInfo culture)
    {
        if(value is TOut tOut && ConvertBackFunc is not null)
        {
            return ConvertBackFunc.Invoke(tOut);
        }
        return null;
    }
}