using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;
using System.Globalization;
using System.Windows.Media;

namespace SudokuWeek4.Models.Converters
{
    internal class BackgroundValueConverter : IValueConverter
    {
        private static readonly BackgroundValueConverter _instance = new BackgroundValueConverter();

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is Boolean && targetType == typeof(Brush))
            {
                Boolean color = (Boolean)value;
                if (color)
                    return Brushes.Red;
                else
                    return Brushes.Transparent;
            }

            // The type is not a brush
            return null;
        }

        // Create a property to get the instance of the BackgroundValue
        public static BackgroundValueConverter Instance
        {
            get { return _instance; }
        }

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