BooleanToVisibilityConverter.cs

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// \file BooleanToVisibilityConverter.cs
// bool ↔ Visibility 변환기 (디자인 타임 지원)
using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;
 
namespace Dreamine.Hybrid.Wpf.Converters
{
    [ValueConversion(typeof(bool), typeof(Visibility))]
    public sealed class BooleanToVisibilityConverter : IValueConverter
    {
        public static BooleanToVisibilityConverter Instance { get; } = new();

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is bool b)
                return b ? Visibility.Visible : Visibility.Collapsed;
            return Visibility.Collapsed;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is Visibility v)
                return v == Visibility.Visible;
            return false;
        }
    }
}