My Personal Commander Variant

// This file is part of the Lobster.Components library
// Copyright: Andreas Raczek
// This file is published under the The Code Project Open License (CPOL) 
// See the file "CPOL.html" for the full license governing this code.

using System.ComponentModel;

namespace Lobster.Components.Collections.Joiner
{
    /// <summary>
    /// If the output type for a CollectionJoiner is derived from
    /// this interface, the members presented here are automatically
    /// filled.
    /// </summary>
    public interface IItemPositionInfo : INotifyPropertyChanged
    {
        /// <summary>
        /// Delivers the index of the item in its
        /// collection in CollectionJoiner.Collections. The index
        /// is 0-based.
        /// </summary>
        int X { get; set; }

        /// <summary>
        /// Delivers the index of this items collection 
        /// in CollectionJoiner.Collections. The index is 
        /// 0-based.
        /// </summary>
        int Y { get; set; }
    }

    public class ItemPositionInfo : ChangeNotifyingObject, IItemPositionInfo
    {
        private int x;
        public int X
        {
            get { return x; }
            set
            {
                if (value != x)
                {
                    x = value;
                    OnPropertyChanged("X");
                }
            }
        }

        private int y;
        public int Y
        {
            get { return y; }
            set
            {
                if (value != y)
                {
                    y = value;
                    OnPropertyChanged("Y");
                }
            }
        }
    }

    public class ItemBox : ItemPositionInfo
    {
        public object Item { get; set; }
    }

    public class ItemBox<T> : ItemPositionInfo
    {
        public T Item { get; set; }
    }
}