Catel - Part 4 of n: Unit testing with Catel

// --------------------------------------------------------------------------------------------------------------------
// <copyright file="RoutedUICommandToContentConverter.cs" company="Catel development team">
//   Copyright (c) 2008 - 2011 Catel development team. All rights reserved.
// </copyright>
// <summary>
//   Converts the inputgestures of the routedUICommand to the Content text.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

using System;
using System.Windows.Data;
using System.Windows.Input;

namespace Catel.Windows.Data.Converters
{
    /// <summary>
    /// Converts the inputgestures of the routedUICommand to the Content text.
    /// </summary>
#if !SILVERLIGHT
    [ValueConversion(typeof(RoutedUICommand), typeof(string))]
#endif
    public class RoutedUICommandToContentConverter : IValueConverter
    {
        /// <summary>
        /// Takes the text representation of the Command
        /// </summary>
        /// <param name="value">The routedUICommand</param>
        /// <param name="targetType">The type of the binding target (string)</param>
        /// <param name="parameter">Any string content that can be displayed before the shortcut</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// The command text. If there are no inputgestures, it returns an empty string
        /// </returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
			// return text when command is not empty
            RoutedUICommand command = value as RoutedUICommand;
			return (command == null) ? string.Empty : command.Text; 
        }

		/// <summary>
		/// Converts a value.
		/// </summary>
		/// <param name="value">The value that is produced by the binding target.</param>
		/// <param name="targetType">The type to convert to.</param>
		/// <param name="parameter">The converter parameter to use.</param>
		/// <param name="culture">The culture to use in the converter.</param>
		/// <returns>
		/// A converted value. If the method returns null, the valid null value is used.
		/// </returns>
		/// <remarks>
		/// This method is currently not supported.
		/// </remarks>
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
		{
            return ConverterHelper.DoNothingBindingValue;
        }
    }
}