Folder Tree WPF Control: Part 2 - Folder Selection Model

FolderTree.xaml.cs

namespace GeekJ.FolderTreeControl
{
    public partial class FolderTree : UserControl
    {
        private FolderTreeSelection _selection = new FolderTreeSelection();
        public FolderTreeSelection Selection
        {
            get { return _selection; }
            set
            {
                _selection = value;
            }
        }
    }
}

FolderTreeSelection.cs

namespace GeekJ.FolderTreeControl.Model
{
    public class FolderTreeSelection
    {
        private List<Item> items = new List<Item>();

        public FolderTreeSelection() { }

        public void Add(FolderTreeItem folderTreeItem, bool include = true)
        {
            items.Add(new Item() { TreeItem = folderTreeItem, Include = include});
        }

        public class Item
        {
            public FolderTreeItem TreeItem { get; set; }
            public bool Include { get; set; }

            public Item() { }
        }
    }
}