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

namespace Gestor.Common.Converters
{
	public class NegativoColorConverter : MarkupExtension, IValueConverter
	{
		public NegativoColorConverter()
		{
		}

		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
		{
			if (value == null || string.IsNullOrEmpty(value.ToString()))
			{
				return new SolidColorBrush(Colors.Black);
			}
			if (!value.ToString().Contains("-"))
			{
				return new SolidColorBrush(Colors.Black);
			}
			return new SolidColorBrush(Colors.Red);
		}

		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
		{
			return null;
		}

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