My Personal Commander Variant

// This file is part of the Lobster.MVVM 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;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.ObjectModel;
using System.Collections;

namespace Lobster.MVVM.VM.TreeVM
{
    internal class TreeStaticNodeVM : TreeNodeVM, ITreeStaticNode
    {
        public TreeStaticNodeVM(Manager manager, object item, string displayNameProperty)
            : base(manager, item, displayNameProperty)
        {
            subItems = new ObservableCollection<ITreeNodeVM>();
            SubItems = new ReadOnlyObservableCollection<ITreeNodeVM>(subItems);
        }

        private ObservableCollection<ITreeNodeVM> subItems;

        public ITreeLeafVM AddLeaf(object item, string displayNameProperty)
        {
            var n = new TreeLeafVM(this.Manager, item, displayNameProperty);
            this.subItems.Add(n);
            return n;
        }

        public ITreeStaticNode AddStaticNode(object item, string displayNameProperty)
        {
            var n = new TreeStaticNodeVM(this.Manager, item, displayNameProperty);
            this.subItems.Add(n);
            return n;

        }

        public ITreeDynamicNode AddDynamicNode(object item, string displayNameProperty, ICollection subItems, TCreateItemBox createItemBox)
        {
            var n = new TreeDynamicNodeVM(this.Manager, item, displayNameProperty, subItems, createItemBox);
            this.subItems.Add(n);
            return n;
        }
    }
}