// ****************************************************************************

// <copyright file="PropertyChangedMessage.cs" company="GalaSoft Laurent Bugnion">

// Copyright © GalaSoft Laurent Bugnion 2009-2011

// </copyright>

// ****************************************************************************

// <author>Laurent Bugnion</author>

// <email>laurent@galasoft.ch</email>

// <date>13.4.2009</date>

// <project>GalaSoft.MvvmLight.Messaging</project>

// <web>http://www.galasoft.ch</web>

// <license>

// See license.txt in this project or http://www.galasoft.ch/license_MIT.txt

// </license>

// ****************************************************************************



////using GalaSoft.Utilities.Attributes;



namespace CBR.Core.Helpers

{

    /// <summary>

    /// Passes a string property name (PropertyName) and a generic value

    /// (<see cref="OldValue" /> and <see cref="NewValue" />) to a recipient.

    /// This message type can be used to propagate a PropertyChanged event to

    /// a recipient using the messenging system.

    /// </summary>

    /// <typeparam name="T">The type of the OldValue and NewValue property.</typeparam>

    ////[ClassInfo(typeof(Messenger))]

    public class PropertyChangedMessage<T> : PropertyChangedMessageBase

    {

        /// <summary>

        /// Initializes a new instance of the <see cref="PropertyChangedMessage{T}" /> class.

        /// </summary>

        /// <param name="sender">The message's sender.</param>

        /// <param name="oldValue">The property's value before the change occurred.</param>

        /// <param name="newValue">The property's value after the change occurred.</param>

        /// <param name="propertyName">The name of the property that changed.</param>

        public PropertyChangedMessage(object sender, T oldValue, T newValue, string propertyName)

            : base(sender, propertyName)

        {

            OldValue = oldValue;

            NewValue = newValue;

        }



        /// <summary>

        /// Initializes a new instance of the <see cref="PropertyChangedMessage{T}" /> class.

        /// </summary>

        /// <param name="oldValue">The property's value before the change occurred.</param>

        /// <param name="newValue">The property's value after the change occurred.</param>

        /// <param name="propertyName">The name of the property that changed.</param>

        public PropertyChangedMessage(T oldValue, T newValue, string propertyName)

            : base(propertyName)

        {

            OldValue = oldValue;

            NewValue = newValue;

        }



        /// <summary>

        /// Initializes a new instance of the <see cref="PropertyChangedMessage{T}" /> class.

        /// </summary>

        /// <param name="sender">The message's sender.</param>

        /// <param name="target">The message's intended target. This parameter can be used

        /// to give an indication as to whom the message was intended for. Of course

        /// this is only an indication, amd may be null.</param>

        /// <param name="oldValue">The property's value before the change occurred.</param>

        /// <param name="newValue">The property's value after the change occurred.</param>

        /// <param name="propertyName">The name of the property that changed.</param>

        public PropertyChangedMessage(object sender, object target, T oldValue, T newValue, string propertyName)

            : base(sender, target, propertyName)

        {

            OldValue = oldValue;

            NewValue = newValue;

        }



        /// <summary>

        /// Gets the value that the property has after the change.

        /// </summary>

        public T NewValue

        {

            get;

            private set;

        }



        /// <summary>

        /// Gets the value that the property had before the change.

        /// </summary>

        public T OldValue

        {

            get;

            private set;

        }

    }

}