WPF-Demo/Waaagh/Converters/ConditionBinding.cs

using System.Globalization;
using System.Windows.Data;
using System.Windows.Markup;

namespace Waaagh.Converters {
    internal class ConditionBinding: MarkupExtension, IValueConverter {
        public object Target { get; set; } = true;
        public object True { get; set; } = true;
        public object False { get; set; } = false;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
            if (Target == null) {
                return value == null ? True : False;
            }
            return Target.Equals(value) ? True : False;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
            throw new NotImplementedException();
        }

        public override object ProvideValue(IServiceProvider serviceProvider) {
            return this;
        }
    }
}