using System;
using System.Windows.Data;

namespace JD.WPF.Converters
{
    public class NullToBooleanConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            bool inverted = false;
            if (parameter is bool)
                inverted = (bool)parameter;

            if(inverted)
                return value == null ? false : true;
            else
                return value == null ? true : false;
        }

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