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#region

/* -----------------------------------------------------------------------

 * <copyright file="NullToVisibilityConverter.cs" company="GRNet">

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#endregion

using System;

using System.Globalization;

using System.Windows;

using System.Windows.Data;

namespace Pithos.Client.WPF.Converters

{

    /// <summary>

    /// Returns Visible if the value is not null, Collapsed otherwise

    /// </summary>

    public class NullToVisibilityConverter:IValueConverter

    {

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

        {

            bool invert = (parameter != null);

            if (value==null)

                return invert?Visibility.Visible:Visibility.Collapsed;

            return invert?Visibility.Collapsed:Visibility.Visible;

        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

        {

            throw new NotImplementedException();

        }

    }

}