Catel - Part 4 of n: Unit testing with Catel

// --------------------------------------------------------------------------------------------------------------------
// <copyright file="ControlToViewModelMapping.cs" company="Catel development team">
//   Copyright (c) 2008 - 2011 Catel development team. All rights reserved.
// </copyright>
// <summary>
//   Holds the information for a control to viewmodel mapping. The information is based on the <see cref="ControlToViewModelAttribute"/>.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

using System;
using System.Reflection;
using Catel.Windows.Properties;
using log4net;

namespace Catel.MVVM.UI
{
    /// <summary>
    /// Holds the information for a control to viewmodel mapping. The information is based on the <see cref="ControlToViewModelAttribute"/>.
    /// </summary>
    internal class ControlToViewModelMapping
    {
        #region Variables
        /// <summary>
        /// The <see cref="ILog">log</see> object.
        /// </summary>
        protected static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        #endregion

        #region Constructor & destructor
        /// <summary>
        /// Initializes a new instance of the <see cref="ControlToViewModelMapping"/> class.
        /// </summary>
        /// <param name="controlPropertyName">Name of the control property.</param>
        /// <param name="viewModelPropertyName">Name of the view model property.</param>
        /// <param name="mapping">The mapping type.</param>
        /// <exception cref="ArgumentException">when <paramref name="controlPropertyName"/> is <c>null</c> or empty.</exception>
        /// <exception cref="ArgumentException">when <paramref name="viewModelPropertyName"/> is <c>null</c> or empty.</exception>
        public ControlToViewModelMapping(string controlPropertyName, string viewModelPropertyName, ControlViewModelModelMappingType mapping)
        {
            if (string.IsNullOrEmpty(controlPropertyName))
            {
                throw new ArgumentException(Exceptions.ArgumentCannotBeNullOrEmpty, "controlPropertyName");
            }

            if (string.IsNullOrEmpty(viewModelPropertyName))
            {
                throw new ArgumentException(Exceptions.ArgumentCannotBeNullOrEmpty, "viewModelPropertyName");
            }

            ControlPropertyName = controlPropertyName;
            ViewModelPropertyName = viewModelPropertyName;
            MappingType = mapping;

            Log.Debug(TraceMessages.CreatedControlToViewModelMapping, mapping, controlPropertyName, viewModelPropertyName);
        }
        #endregion

        #region Properties
        /// <summary>
        /// Gets the name of the control property.
        /// </summary>
        /// <value>The name of the control property.</value>
        public string ControlPropertyName { get; private set; }

        /// <summary>
        /// Gets the name of the view model property.
        /// </summary>
        /// <value>The name of the view model property.</value>
        public string ViewModelPropertyName { get; private set; }

        /// <summary>
        /// Gets or sets the mapping type.
        /// </summary>
        /// <value>The mapping type.</value>
        public ControlViewModelModelMappingType MappingType { get; private set; }
        #endregion
    }
}