A Tree Collection

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Globalization;

using Common;

namespace TreeTest
{
	public class Form1 : System.Windows.Forms.Form
	{
		private ITree tree = null;
		private ITree treeClipboard = null;
		private object oSetObject = null;

		private System.Windows.Forms.TreeView TreeView;
		private System.Windows.Forms.ToolBar ToolBar;
		private System.Windows.Forms.ImageList ImageList;
		private System.Windows.Forms.ToolBarButton ToolBarButtonViewRefresh;
		private System.Windows.Forms.ToolBarButton ToolBarButtonFileNew;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox TextBoxCount;
		private System.Windows.Forms.TextBox TextBoxTotal;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Button ButtonDirectChildrenEnumerator;
		private System.Windows.Forms.Button ButtonINodeEnumerator;
		private System.Windows.Forms.Button ButtonITreeEnumerator;
		private System.Windows.Forms.Button ButtonInReverseEnumerator;
		private System.Windows.Forms.Button ButtonAllChildrenEnumerator;
		private System.Windows.Forms.Button ButtonInsertInteger;
		private System.Windows.Forms.Button ButtonInsertNode;
		private System.Windows.Forms.TreeView TreeViewClipboard;
		private System.Windows.Forms.Button ButtonCut;
		private System.Windows.Forms.Button ButtonCopy;
		private System.Windows.Forms.Button ButtonDeepCopy;
		private System.Windows.Forms.Button ButtonDelete;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Button ButtonCopyObject;
		private System.Windows.Forms.Button ButtonDeepCopyObject;
		private System.Windows.Forms.Button ButtonCutObject;
		private System.Windows.Forms.Button ButtonRemoveObject;
		private System.Windows.Forms.Button ButtonContainsObject;
		private System.Windows.Forms.Button ButtonSetObject;
		private System.Windows.Forms.Button ButtonMoveToPrevious;
		private System.Windows.Forms.Button ButtonMoveToNext;
		private System.Windows.Forms.Button ButtonMoveToParent;
		private System.Windows.Forms.Button ButtonMoveToChild;
		private System.Windows.Forms.Button ButtonMoveToFirst;
		private System.Windows.Forms.Button ButtonMoveToLast;
		private System.Windows.Forms.Button ButtonInsertChildTree;
		private System.Windows.Forms.Button ButtonInsertNextTree;
		private System.Windows.Forms.Button ButtonInsertPreviousTree;
		private System.Windows.Forms.Button ButtonAddTree;
		private System.Windows.Forms.Button ButtonAddChildTree;
		private System.Windows.Forms.Button ButtonAddObject;
		private System.Windows.Forms.Button ButtonAddChildObject;
		private System.Windows.Forms.Button ButtonInsertChildObject;
		private System.Windows.Forms.Button ButtonInsertNextObject;
		private System.Windows.Forms.Button ButtonInsertPreviousObject;
		private System.Windows.Forms.Button ButtonCopyToArray;
		private System.Windows.Forms.TextBox TextBoxHandlers;
		private System.Windows.Forms.Button ButtonSetData;
		private System.Windows.Forms.Button ButtonClear;
		private System.ComponentModel.IContainer components;

		public Form1()
		{
			InitializeComponent();

//			tree = NodeTree.NewTree();
			tree = NodeTree.NewTree( typeof( Element ) );

			tree.Validate      += new NodeTreeDataEventHandler     ( Tree_Validate      );
			tree.Clearing      += new EventHandler                 ( Tree_Clearing      );
			tree.Cleared       += new EventHandler                 ( Tree_Cleared       );
			tree.Setting       += new NodeTreeDataEventHandler     ( Tree_Setting       );
			tree.SetDone       += new NodeTreeDataEventHandler     ( Tree_SetDone       );
			tree.Inserting     += new NodeTreeInsertEventHandler   ( Tree_Inserting     );
			tree.Inserted      += new NodeTreeInsertEventHandler   ( Tree_Inserted      );
			tree.Cutting       += new EventHandler                 ( Tree_Cutting       );
			tree.CutDone       += new EventHandler                 ( Tree_CutDone       );
			tree.Copying       += new NodeTreeNodeEventHandler     ( Tree_Copying       );
			tree.Copied        += new NodeTreeNodeEventHandler     ( Tree_Copied        );
			tree.DeepCopying   += new NodeTreeNodeEventHandler     ( Tree_DeepCopying   );
			tree.DeepCopied    += new NodeTreeNodeEventHandler     ( Tree_DeepCopied    );

			OnFileNew();
		}

		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
			this.TreeView = new System.Windows.Forms.TreeView();
			this.ToolBar = new System.Windows.Forms.ToolBar();
			this.ToolBarButtonFileNew = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonViewRefresh = new System.Windows.Forms.ToolBarButton();
			this.ImageList = new System.Windows.Forms.ImageList(this.components);
			this.label1 = new System.Windows.Forms.Label();
			this.TextBoxCount = new System.Windows.Forms.TextBox();
			this.TextBoxTotal = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.ButtonDirectChildrenEnumerator = new System.Windows.Forms.Button();
			this.ButtonINodeEnumerator = new System.Windows.Forms.Button();
			this.ButtonITreeEnumerator = new System.Windows.Forms.Button();
			this.ButtonInReverseEnumerator = new System.Windows.Forms.Button();
			this.ButtonAllChildrenEnumerator = new System.Windows.Forms.Button();
			this.ButtonInsertChildTree = new System.Windows.Forms.Button();
			this.ButtonInsertNextTree = new System.Windows.Forms.Button();
			this.ButtonInsertPreviousTree = new System.Windows.Forms.Button();
			this.ButtonInsertInteger = new System.Windows.Forms.Button();
			this.ButtonInsertNode = new System.Windows.Forms.Button();
			this.TreeViewClipboard = new System.Windows.Forms.TreeView();
			this.ButtonCut = new System.Windows.Forms.Button();
			this.ButtonCopy = new System.Windows.Forms.Button();
			this.ButtonDeepCopy = new System.Windows.Forms.Button();
			this.ButtonDelete = new System.Windows.Forms.Button();
			this.label3 = new System.Windows.Forms.Label();
			this.ButtonCopyObject = new System.Windows.Forms.Button();
			this.ButtonDeepCopyObject = new System.Windows.Forms.Button();
			this.ButtonCutObject = new System.Windows.Forms.Button();
			this.ButtonRemoveObject = new System.Windows.Forms.Button();
			this.ButtonContainsObject = new System.Windows.Forms.Button();
			this.ButtonSetObject = new System.Windows.Forms.Button();
			this.ButtonMoveToPrevious = new System.Windows.Forms.Button();
			this.ButtonMoveToChild = new System.Windows.Forms.Button();
			this.ButtonMoveToNext = new System.Windows.Forms.Button();
			this.ButtonMoveToParent = new System.Windows.Forms.Button();
			this.ButtonMoveToFirst = new System.Windows.Forms.Button();
			this.ButtonMoveToLast = new System.Windows.Forms.Button();
			this.ButtonAddTree = new System.Windows.Forms.Button();
			this.ButtonAddChildTree = new System.Windows.Forms.Button();
			this.ButtonAddObject = new System.Windows.Forms.Button();
			this.ButtonAddChildObject = new System.Windows.Forms.Button();
			this.ButtonInsertChildObject = new System.Windows.Forms.Button();
			this.ButtonInsertNextObject = new System.Windows.Forms.Button();
			this.ButtonInsertPreviousObject = new System.Windows.Forms.Button();
			this.ButtonCopyToArray = new System.Windows.Forms.Button();
			this.TextBoxHandlers = new System.Windows.Forms.TextBox();
			this.ButtonSetData = new System.Windows.Forms.Button();
			this.ButtonClear = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// TreeView
			// 
			this.TreeView.FullRowSelect = true;
			this.TreeView.HideSelection = false;
			this.TreeView.ImageIndex = -1;
			this.TreeView.Location = new System.Drawing.Point(8, 56);
			this.TreeView.Name = "TreeView";
			this.TreeView.SelectedImageIndex = -1;
			this.TreeView.ShowRootLines = false;
			this.TreeView.Size = new System.Drawing.Size(160, 344);
			this.TreeView.TabIndex = 5;
			this.TreeView.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.TreeView_AfterSelect);
			// 
			// ToolBar
			// 
			this.ToolBar.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
			this.ToolBar.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
																					   this.ToolBarButtonFileNew,
																					   this.ToolBarButtonViewRefresh});
			this.ToolBar.DropDownArrows = true;
			this.ToolBar.ImageList = this.ImageList;
			this.ToolBar.Location = new System.Drawing.Point(0, 0);
			this.ToolBar.Name = "ToolBar";
			this.ToolBar.ShowToolTips = true;
			this.ToolBar.Size = new System.Drawing.Size(848, 28);
			this.ToolBar.TabIndex = 0;
			this.ToolBar.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.ToolBar_ButtonClick);
			// 
			// ToolBarButtonFileNew
			// 
			this.ToolBarButtonFileNew.ImageIndex = 0;
			this.ToolBarButtonFileNew.ToolTipText = "New";
			// 
			// ToolBarButtonViewRefresh
			// 
			this.ToolBarButtonViewRefresh.ImageIndex = 1;
			this.ToolBarButtonViewRefresh.ToolTipText = "Refresh";
			// 
			// ImageList
			// 
			this.ImageList.ImageSize = new System.Drawing.Size(16, 16);
			this.ImageList.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("ImageList.ImageStream")));
			this.ImageList.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 32);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(40, 20);
			this.label1.TabIndex = 1;
			this.label1.Text = "Count";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// TextBoxCount
			// 
			this.TextBoxCount.Location = new System.Drawing.Point(72, 32);
			this.TextBoxCount.Name = "TextBoxCount";
			this.TextBoxCount.ReadOnly = true;
			this.TextBoxCount.Size = new System.Drawing.Size(40, 20);
			this.TextBoxCount.TabIndex = 2;
			this.TextBoxCount.Text = "";
			this.TextBoxCount.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
			// 
			// TextBoxTotal
			// 
			this.TextBoxTotal.Location = new System.Drawing.Point(128, 32);
			this.TextBoxTotal.Name = "TextBoxTotal";
			this.TextBoxTotal.ReadOnly = true;
			this.TextBoxTotal.Size = new System.Drawing.Size(40, 20);
			this.TextBoxTotal.TabIndex = 4;
			this.TextBoxTotal.Text = "";
			this.TextBoxTotal.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(112, 32);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(16, 20);
			this.label2.TabIndex = 3;
			this.label2.Text = "/";
			this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// ButtonDirectChildrenEnumerator
			// 
			this.ButtonDirectChildrenEnumerator.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonDirectChildrenEnumerator.Location = new System.Drawing.Point(680, 504);
			this.ButtonDirectChildrenEnumerator.Name = "ButtonDirectChildrenEnumerator";
			this.ButtonDirectChildrenEnumerator.Size = new System.Drawing.Size(160, 23);
			this.ButtonDirectChildrenEnumerator.TabIndex = 42;
			this.ButtonDirectChildrenEnumerator.Text = "DirectChildren Enumerator";
			this.ButtonDirectChildrenEnumerator.Click += new System.EventHandler(this.ButtonDirectChildrenEnumerator_Click);
			// 
			// ButtonINodeEnumerator
			// 
			this.ButtonINodeEnumerator.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonINodeEnumerator.Location = new System.Drawing.Point(680, 408);
			this.ButtonINodeEnumerator.Name = "ButtonINodeEnumerator";
			this.ButtonINodeEnumerator.Size = new System.Drawing.Size(160, 23);
			this.ButtonINodeEnumerator.TabIndex = 39;
			this.ButtonINodeEnumerator.Text = "INode Enumerator";
			this.ButtonINodeEnumerator.Click += new System.EventHandler(this.ButtonINodeEnumerator_Click);
			// 
			// ButtonITreeEnumerator
			// 
			this.ButtonITreeEnumerator.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonITreeEnumerator.Location = new System.Drawing.Point(680, 440);
			this.ButtonITreeEnumerator.Name = "ButtonITreeEnumerator";
			this.ButtonITreeEnumerator.Size = new System.Drawing.Size(160, 23);
			this.ButtonITreeEnumerator.TabIndex = 40;
			this.ButtonITreeEnumerator.Text = "ITree Enumerator";
			this.ButtonITreeEnumerator.Click += new System.EventHandler(this.ButtonITreeEnumerator_Click);
			// 
			// ButtonInReverseEnumerator
			// 
			this.ButtonInReverseEnumerator.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInReverseEnumerator.Location = new System.Drawing.Point(680, 536);
			this.ButtonInReverseEnumerator.Name = "ButtonInReverseEnumerator";
			this.ButtonInReverseEnumerator.Size = new System.Drawing.Size(160, 23);
			this.ButtonInReverseEnumerator.TabIndex = 43;
			this.ButtonInReverseEnumerator.Text = "InReverse Enumerator";
			this.ButtonInReverseEnumerator.Click += new System.EventHandler(this.ButtonInReverseEnumerator_Click);
			// 
			// ButtonAllChildrenEnumerator
			// 
			this.ButtonAllChildrenEnumerator.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonAllChildrenEnumerator.Location = new System.Drawing.Point(680, 472);
			this.ButtonAllChildrenEnumerator.Name = "ButtonAllChildrenEnumerator";
			this.ButtonAllChildrenEnumerator.Size = new System.Drawing.Size(160, 23);
			this.ButtonAllChildrenEnumerator.TabIndex = 41;
			this.ButtonAllChildrenEnumerator.Text = "AllChildren Enumerator";
			this.ButtonAllChildrenEnumerator.Click += new System.EventHandler(this.ButtonAllChildrenEnumerator_Click);
			// 
			// ButtonInsertChildTree
			// 
			this.ButtonInsertChildTree.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertChildTree.Location = new System.Drawing.Point(176, 312);
			this.ButtonInsertChildTree.Name = "ButtonInsertChildTree";
			this.ButtonInsertChildTree.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertChildTree.TabIndex = 14;
			this.ButtonInsertChildTree.Text = "Insert Child Tree";
			this.ButtonInsertChildTree.Click += new System.EventHandler(this.ButtonInsertChildTree_Click);
			// 
			// ButtonInsertNextTree
			// 
			this.ButtonInsertNextTree.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertNextTree.Location = new System.Drawing.Point(176, 280);
			this.ButtonInsertNextTree.Name = "ButtonInsertNextTree";
			this.ButtonInsertNextTree.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertNextTree.TabIndex = 13;
			this.ButtonInsertNextTree.Text = "Insert Next Tree";
			this.ButtonInsertNextTree.Click += new System.EventHandler(this.ButtonInsertNextTree_Click);
			// 
			// ButtonInsertPreviousTree
			// 
			this.ButtonInsertPreviousTree.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertPreviousTree.Location = new System.Drawing.Point(176, 248);
			this.ButtonInsertPreviousTree.Name = "ButtonInsertPreviousTree";
			this.ButtonInsertPreviousTree.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertPreviousTree.TabIndex = 12;
			this.ButtonInsertPreviousTree.Text = "Insert Previous Tree";
			this.ButtonInsertPreviousTree.Click += new System.EventHandler(this.ButtonInsertPreviousTree_Click);
			// 
			// ButtonInsertInteger
			// 
			this.ButtonInsertInteger.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertInteger.Location = new System.Drawing.Point(344, 56);
			this.ButtonInsertInteger.Name = "ButtonInsertInteger";
			this.ButtonInsertInteger.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertInteger.TabIndex = 17;
			this.ButtonInsertInteger.Text = "Insert Child Integer";
			this.ButtonInsertInteger.Click += new System.EventHandler(this.ButtonInsertInteger_Click);
			// 
			// ButtonInsertNode
			// 
			this.ButtonInsertNode.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertNode.Location = new System.Drawing.Point(344, 88);
			this.ButtonInsertNode.Name = "ButtonInsertNode";
			this.ButtonInsertNode.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertNode.TabIndex = 18;
			this.ButtonInsertNode.Text = "Insert Child Node";
			this.ButtonInsertNode.Click += new System.EventHandler(this.ButtonInsertNode_Click);
			// 
			// TreeViewClipboard
			// 
			this.TreeViewClipboard.FullRowSelect = true;
			this.TreeViewClipboard.HideSelection = false;
			this.TreeViewClipboard.ImageIndex = -1;
			this.TreeViewClipboard.Location = new System.Drawing.Point(680, 56);
			this.TreeViewClipboard.Name = "TreeViewClipboard";
			this.TreeViewClipboard.SelectedImageIndex = -1;
			this.TreeViewClipboard.ShowRootLines = false;
			this.TreeViewClipboard.Size = new System.Drawing.Size(160, 344);
			this.TreeViewClipboard.TabIndex = 38;
			// 
			// ButtonCut
			// 
			this.ButtonCut.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonCut.Location = new System.Drawing.Point(512, 56);
			this.ButtonCut.Name = "ButtonCut";
			this.ButtonCut.Size = new System.Drawing.Size(160, 23);
			this.ButtonCut.TabIndex = 21;
			this.ButtonCut.Text = "Cut";
			this.ButtonCut.Click += new System.EventHandler(this.ButtonCut_Click);
			// 
			// ButtonCopy
			// 
			this.ButtonCopy.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonCopy.Location = new System.Drawing.Point(512, 88);
			this.ButtonCopy.Name = "ButtonCopy";
			this.ButtonCopy.Size = new System.Drawing.Size(160, 23);
			this.ButtonCopy.TabIndex = 22;
			this.ButtonCopy.Text = "Copy";
			this.ButtonCopy.Click += new System.EventHandler(this.ButtonCopy_Click);
			// 
			// ButtonDeepCopy
			// 
			this.ButtonDeepCopy.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonDeepCopy.Location = new System.Drawing.Point(512, 120);
			this.ButtonDeepCopy.Name = "ButtonDeepCopy";
			this.ButtonDeepCopy.Size = new System.Drawing.Size(160, 23);
			this.ButtonDeepCopy.TabIndex = 23;
			this.ButtonDeepCopy.Text = "Deep Copy";
			this.ButtonDeepCopy.Click += new System.EventHandler(this.ButtonDeepCopy_Click);
			// 
			// ButtonDelete
			// 
			this.ButtonDelete.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonDelete.Location = new System.Drawing.Point(512, 152);
			this.ButtonDelete.Name = "ButtonDelete";
			this.ButtonDelete.Size = new System.Drawing.Size(160, 23);
			this.ButtonDelete.TabIndex = 24;
			this.ButtonDelete.Text = "Remove";
			this.ButtonDelete.Click += new System.EventHandler(this.ButtonDelete_Click);
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(696, 32);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(64, 20);
			this.label3.TabIndex = 37;
			this.label3.Text = "Clipboard";
			this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// ButtonCopyObject
			// 
			this.ButtonCopyObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonCopyObject.Location = new System.Drawing.Point(512, 312);
			this.ButtonCopyObject.Name = "ButtonCopyObject";
			this.ButtonCopyObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonCopyObject.TabIndex = 28;
			this.ButtonCopyObject.Text = "Copy Object";
			this.ButtonCopyObject.Click += new System.EventHandler(this.ButtonCopyObject_Click);
			// 
			// ButtonDeepCopyObject
			// 
			this.ButtonDeepCopyObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonDeepCopyObject.Location = new System.Drawing.Point(512, 344);
			this.ButtonDeepCopyObject.Name = "ButtonDeepCopyObject";
			this.ButtonDeepCopyObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonDeepCopyObject.TabIndex = 29;
			this.ButtonDeepCopyObject.Text = "Deep Copy Object";
			this.ButtonDeepCopyObject.Click += new System.EventHandler(this.ButtonDeepCopyObject_Click);
			// 
			// ButtonCutObject
			// 
			this.ButtonCutObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonCutObject.Location = new System.Drawing.Point(512, 280);
			this.ButtonCutObject.Name = "ButtonCutObject";
			this.ButtonCutObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonCutObject.TabIndex = 27;
			this.ButtonCutObject.Text = "Cut Object";
			this.ButtonCutObject.Click += new System.EventHandler(this.ButtonCutObject_Click);
			// 
			// ButtonRemoveObject
			// 
			this.ButtonRemoveObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonRemoveObject.Location = new System.Drawing.Point(512, 376);
			this.ButtonRemoveObject.Name = "ButtonRemoveObject";
			this.ButtonRemoveObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonRemoveObject.TabIndex = 30;
			this.ButtonRemoveObject.Text = "Remove Object";
			this.ButtonRemoveObject.Click += new System.EventHandler(this.ButtonRemoveObject_Click);
			// 
			// ButtonContainsObject
			// 
			this.ButtonContainsObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonContainsObject.Location = new System.Drawing.Point(512, 248);
			this.ButtonContainsObject.Name = "ButtonContainsObject";
			this.ButtonContainsObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonContainsObject.TabIndex = 26;
			this.ButtonContainsObject.Text = "Contains Object";
			this.ButtonContainsObject.Click += new System.EventHandler(this.ButtonContainsObject_Click);
			// 
			// ButtonSetObject
			// 
			this.ButtonSetObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonSetObject.Location = new System.Drawing.Point(512, 216);
			this.ButtonSetObject.Name = "ButtonSetObject";
			this.ButtonSetObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonSetObject.TabIndex = 25;
			this.ButtonSetObject.Text = "Set Object";
			this.ButtonSetObject.Click += new System.EventHandler(this.ButtonSetObject_Click);
			// 
			// ButtonMoveToPrevious
			// 
			this.ButtonMoveToPrevious.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonMoveToPrevious.Location = new System.Drawing.Point(512, 472);
			this.ButtonMoveToPrevious.Name = "ButtonMoveToPrevious";
			this.ButtonMoveToPrevious.Size = new System.Drawing.Size(160, 23);
			this.ButtonMoveToPrevious.TabIndex = 32;
			this.ButtonMoveToPrevious.Text = "Move To Previous";
			this.ButtonMoveToPrevious.Click += new System.EventHandler(this.ButtonMoveToPrevious_Click);
			// 
			// ButtonMoveToChild
			// 
			this.ButtonMoveToChild.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonMoveToChild.Location = new System.Drawing.Point(512, 536);
			this.ButtonMoveToChild.Name = "ButtonMoveToChild";
			this.ButtonMoveToChild.Size = new System.Drawing.Size(160, 23);
			this.ButtonMoveToChild.TabIndex = 34;
			this.ButtonMoveToChild.Text = "Move To Child";
			this.ButtonMoveToChild.Click += new System.EventHandler(this.ButtonMoveToChild_Click);
			// 
			// ButtonMoveToNext
			// 
			this.ButtonMoveToNext.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonMoveToNext.Location = new System.Drawing.Point(512, 504);
			this.ButtonMoveToNext.Name = "ButtonMoveToNext";
			this.ButtonMoveToNext.Size = new System.Drawing.Size(160, 23);
			this.ButtonMoveToNext.TabIndex = 33;
			this.ButtonMoveToNext.Text = "Move To Next";
			this.ButtonMoveToNext.Click += new System.EventHandler(this.ButtonMoveToNext_Click);
			// 
			// ButtonMoveToParent
			// 
			this.ButtonMoveToParent.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonMoveToParent.Location = new System.Drawing.Point(512, 440);
			this.ButtonMoveToParent.Name = "ButtonMoveToParent";
			this.ButtonMoveToParent.Size = new System.Drawing.Size(160, 23);
			this.ButtonMoveToParent.TabIndex = 31;
			this.ButtonMoveToParent.Text = "Move To Parent";
			this.ButtonMoveToParent.Click += new System.EventHandler(this.ButtonMoveToParent_Click);
			// 
			// ButtonMoveToFirst
			// 
			this.ButtonMoveToFirst.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonMoveToFirst.Location = new System.Drawing.Point(512, 568);
			this.ButtonMoveToFirst.Name = "ButtonMoveToFirst";
			this.ButtonMoveToFirst.Size = new System.Drawing.Size(160, 23);
			this.ButtonMoveToFirst.TabIndex = 35;
			this.ButtonMoveToFirst.Text = "Move To First";
			this.ButtonMoveToFirst.Click += new System.EventHandler(this.ButtonMoveToFirst_Click);
			// 
			// ButtonMoveToLast
			// 
			this.ButtonMoveToLast.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonMoveToLast.Location = new System.Drawing.Point(512, 600);
			this.ButtonMoveToLast.Name = "ButtonMoveToLast";
			this.ButtonMoveToLast.Size = new System.Drawing.Size(160, 23);
			this.ButtonMoveToLast.TabIndex = 36;
			this.ButtonMoveToLast.Text = "Move To Last";
			this.ButtonMoveToLast.Click += new System.EventHandler(this.ButtonMoveToLast_Click);
			// 
			// ButtonAddTree
			// 
			this.ButtonAddTree.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonAddTree.Location = new System.Drawing.Point(176, 344);
			this.ButtonAddTree.Name = "ButtonAddTree";
			this.ButtonAddTree.Size = new System.Drawing.Size(160, 23);
			this.ButtonAddTree.TabIndex = 15;
			this.ButtonAddTree.Text = "Add Tree";
			this.ButtonAddTree.Click += new System.EventHandler(this.ButtonAddTree_Click);
			// 
			// ButtonAddChildTree
			// 
			this.ButtonAddChildTree.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonAddChildTree.Location = new System.Drawing.Point(176, 376);
			this.ButtonAddChildTree.Name = "ButtonAddChildTree";
			this.ButtonAddChildTree.Size = new System.Drawing.Size(160, 23);
			this.ButtonAddChildTree.TabIndex = 16;
			this.ButtonAddChildTree.Text = "Add Child Tree";
			this.ButtonAddChildTree.Click += new System.EventHandler(this.ButtonAddChildTree_Click);
			// 
			// ButtonAddObject
			// 
			this.ButtonAddObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonAddObject.Location = new System.Drawing.Point(176, 152);
			this.ButtonAddObject.Name = "ButtonAddObject";
			this.ButtonAddObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonAddObject.TabIndex = 10;
			this.ButtonAddObject.Text = "Add  Object";
			this.ButtonAddObject.Click += new System.EventHandler(this.ButtonAddObject_Click);
			// 
			// ButtonAddChildObject
			// 
			this.ButtonAddChildObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonAddChildObject.Location = new System.Drawing.Point(176, 184);
			this.ButtonAddChildObject.Name = "ButtonAddChildObject";
			this.ButtonAddChildObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonAddChildObject.TabIndex = 11;
			this.ButtonAddChildObject.Text = "Add Child  Object";
			this.ButtonAddChildObject.Click += new System.EventHandler(this.ButtonAddChildObject_Click);
			// 
			// ButtonInsertChildObject
			// 
			this.ButtonInsertChildObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertChildObject.Location = new System.Drawing.Point(176, 120);
			this.ButtonInsertChildObject.Name = "ButtonInsertChildObject";
			this.ButtonInsertChildObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertChildObject.TabIndex = 9;
			this.ButtonInsertChildObject.Text = "Insert Child  Object";
			this.ButtonInsertChildObject.Click += new System.EventHandler(this.ButtonInsertChildObject_Click);
			// 
			// ButtonInsertNextObject
			// 
			this.ButtonInsertNextObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertNextObject.Location = new System.Drawing.Point(176, 88);
			this.ButtonInsertNextObject.Name = "ButtonInsertNextObject";
			this.ButtonInsertNextObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertNextObject.TabIndex = 8;
			this.ButtonInsertNextObject.Text = "Insert Next  Object";
			this.ButtonInsertNextObject.Click += new System.EventHandler(this.ButtonInsertNextObject_Click);
			// 
			// ButtonInsertPreviousObject
			// 
			this.ButtonInsertPreviousObject.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonInsertPreviousObject.Location = new System.Drawing.Point(176, 56);
			this.ButtonInsertPreviousObject.Name = "ButtonInsertPreviousObject";
			this.ButtonInsertPreviousObject.Size = new System.Drawing.Size(160, 23);
			this.ButtonInsertPreviousObject.TabIndex = 7;
			this.ButtonInsertPreviousObject.Text = "Insert Previous Object";
			this.ButtonInsertPreviousObject.Click += new System.EventHandler(this.ButtonInsertPreviousObject_Click);
			// 
			// ButtonCopyToArray
			// 
			this.ButtonCopyToArray.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonCopyToArray.Location = new System.Drawing.Point(680, 600);
			this.ButtonCopyToArray.Name = "ButtonCopyToArray";
			this.ButtonCopyToArray.Size = new System.Drawing.Size(160, 23);
			this.ButtonCopyToArray.TabIndex = 44;
			this.ButtonCopyToArray.Text = "Copy To Array";
			this.ButtonCopyToArray.Click += new System.EventHandler(this.ButtonCopyToArray_Click);
			// 
			// TextBoxHandlers
			// 
			this.TextBoxHandlers.Font = new System.Drawing.Font("Courier New", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.TextBoxHandlers.Location = new System.Drawing.Point(8, 408);
			this.TextBoxHandlers.Multiline = true;
			this.TextBoxHandlers.Name = "TextBoxHandlers";
			this.TextBoxHandlers.ReadOnly = true;
			this.TextBoxHandlers.ScrollBars = System.Windows.Forms.ScrollBars.Both;
			this.TextBoxHandlers.Size = new System.Drawing.Size(496, 216);
			this.TextBoxHandlers.TabIndex = 6;
			this.TextBoxHandlers.Text = "";
			this.TextBoxHandlers.WordWrap = false;
			this.TextBoxHandlers.KeyDown += new System.Windows.Forms.KeyEventHandler(this.TextBoxHandlers_KeyDown);
			this.TextBoxHandlers.DoubleClick += new System.EventHandler(this.TextBoxHandlers_DoubleClick);
			// 
			// ButtonSetData
			// 
			this.ButtonSetData.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonSetData.Location = new System.Drawing.Point(344, 152);
			this.ButtonSetData.Name = "ButtonSetData";
			this.ButtonSetData.Size = new System.Drawing.Size(160, 23);
			this.ButtonSetData.TabIndex = 19;
			this.ButtonSetData.Text = "Set Data";
			this.ButtonSetData.Click += new System.EventHandler(this.ButtonSetData_Click);
			// 
			// ButtonClear
			// 
			this.ButtonClear.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.ButtonClear.Location = new System.Drawing.Point(344, 216);
			this.ButtonClear.Name = "ButtonClear";
			this.ButtonClear.Size = new System.Drawing.Size(160, 23);
			this.ButtonClear.TabIndex = 20;
			this.ButtonClear.Text = "Clear";
			this.ButtonClear.Click += new System.EventHandler(this.ButtonClear_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(848, 636);
			this.Controls.Add(this.TextBoxHandlers);
			this.Controls.Add(this.ButtonDirectChildrenEnumerator);
			this.Controls.Add(this.TextBoxCount);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.TreeView);
			this.Controls.Add(this.ToolBar);
			this.Controls.Add(this.TextBoxTotal);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.ButtonINodeEnumerator);
			this.Controls.Add(this.ButtonITreeEnumerator);
			this.Controls.Add(this.ButtonInReverseEnumerator);
			this.Controls.Add(this.ButtonAllChildrenEnumerator);
			this.Controls.Add(this.ButtonInsertChildTree);
			this.Controls.Add(this.ButtonInsertNextTree);
			this.Controls.Add(this.ButtonInsertPreviousTree);
			this.Controls.Add(this.ButtonInsertInteger);
			this.Controls.Add(this.ButtonInsertNode);
			this.Controls.Add(this.TreeViewClipboard);
			this.Controls.Add(this.ButtonCut);
			this.Controls.Add(this.ButtonCopy);
			this.Controls.Add(this.ButtonDeepCopy);
			this.Controls.Add(this.ButtonDelete);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.ButtonCopyObject);
			this.Controls.Add(this.ButtonDeepCopyObject);
			this.Controls.Add(this.ButtonCutObject);
			this.Controls.Add(this.ButtonRemoveObject);
			this.Controls.Add(this.ButtonContainsObject);
			this.Controls.Add(this.ButtonSetObject);
			this.Controls.Add(this.ButtonMoveToPrevious);
			this.Controls.Add(this.ButtonMoveToChild);
			this.Controls.Add(this.ButtonMoveToNext);
			this.Controls.Add(this.ButtonMoveToParent);
			this.Controls.Add(this.ButtonMoveToFirst);
			this.Controls.Add(this.ButtonMoveToLast);
			this.Controls.Add(this.ButtonAddTree);
			this.Controls.Add(this.ButtonAddChildTree);
			this.Controls.Add(this.ButtonAddObject);
			this.Controls.Add(this.ButtonAddChildObject);
			this.Controls.Add(this.ButtonInsertChildObject);
			this.Controls.Add(this.ButtonInsertNextObject);
			this.Controls.Add(this.ButtonInsertPreviousObject);
			this.Controls.Add(this.ButtonCopyToArray);
			this.Controls.Add(this.ButtonSetData);
			this.Controls.Add(this.ButtonClear);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
			this.MaximizeBox = false;
			this.Name = "Form1";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Tree Test";
			this.ResumeLayout(false);

		}
		#endregion

		[STAThread]
		static void Main() 
		{
			Application.EnableVisualStyles();
			Application.DoEvents();

			Application.Run( new Form1() );
		}

//-----------------------------------------------------------------------------

		private void ToolBar_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
		{
			if ( e.Button == ToolBarButtonFileNew     ) OnFileNew     ();
			if ( e.Button == ToolBarButtonViewRefresh ) OnViewRefresh ();
		}

//-----------------------------------------------------------------------------

		private void OnFileNew()
		{
			tree.Clear();

			while ( tree.Count < 10 )
			{
				tree.Clear();
				TextBoxHandlers.Clear();
				AddNodes( tree.Root, "", 0 );
			}

			OnViewRefresh();
		}

		private static Random Random = new Random();

		private void AddNodes( INode parent, string sParent, int iDepth )
		{
			if ( iDepth > 3 ) return;

			for ( int i = 0 ; Random.Next( 10 ) < 5 ; i++ )
			{
				string s = sParent + i;

				INode child = parent.AddChild( new Element( s ) );

				child.Validate      += new NodeTreeDataEventHandler     ( Node_Validate      );
//				child.Validate      += new NodeTreeDataEventHandler     ( Node_Validate      );
//				child.Clearing      += new EventHandler                 ( Node_Clearing      );
//				child.Cleared       += new EventHandler                 ( Node_Cleared       );
				child.Setting       += new NodeTreeDataEventHandler     ( Node_Setting       );
				child.SetDone       += new NodeTreeDataEventHandler     ( Node_SetDone       );
				child.Inserting     += new NodeTreeInsertEventHandler   ( Node_Inserting     );
				child.Inserted      += new NodeTreeInsertEventHandler   ( Node_Inserted      );
				child.Cutting       += new EventHandler                 ( Node_Cutting       );
				child.CutDone       += new EventHandler                 ( Node_CutDone       );
				child.Copying       += new NodeTreeNodeEventHandler     ( Node_Copying       );
				child.Copied        += new NodeTreeNodeEventHandler     ( Node_Copied        );
				child.DeepCopying   += new NodeTreeNodeEventHandler     ( Node_DeepCopying   );
				child.DeepCopied    += new NodeTreeNodeEventHandler     ( Node_DeepCopied    );

				AddNodes( child, s, iDepth + 1 );
			}
		}

		private void OnViewRefresh()
		{
			TextBoxTotal.Text = tree.Count.ToString( CultureInfo.CurrentUICulture );

			FillTreeView( TreeView, tree );
			FillTreeView( TreeViewClipboard, treeClipboard );
		}

		private class TreeViewUpdate : IDisposable
		{
			private TreeView TreeView = null;

			public TreeViewUpdate( TreeView TreeView )
			{
				this.TreeView = TreeView;
				TreeView.BeginUpdate();
			}

			public void Dispose()
			{
				TreeView.EndUpdate();
			}
		}


		private void FillTreeView( TreeView TreeView, ITree tree )
		{
			object oSelected = null;
			if ( TreeView.SelectedNode != null ) oSelected = TreeView.SelectedNode.Tag;

			using ( new TreeViewUpdate( TreeView ) )
			{
				TreeView.Nodes.Clear();

				if ( tree == null ) return;

				TreeNode Root = TreeView.Nodes.Add( tree.Root.ToString() );
				Root.Tag = tree.Root;

				TreeNode nSelected = AddNodes( Root.Nodes, tree.Root, oSelected );

				TreeView.ExpandAll();

				if ( nSelected != null )
					TreeView.SelectedNode = nSelected;
				else
				if ( TreeView.Nodes.Count > 0 )
					TreeView.SelectedNode = TreeView.Nodes[ 0 ];
			}
		}

		private TreeNode AddNodes( TreeNodeCollection nodes, INode parent, object oSelected )
		{
			TreeNode nSelected = null;

			foreach ( INode child in parent.DirectChildren )
//			for ( INode child = parent.child ; child != null ; child = child.next )
			{
				TreeNode node = nodes.Add( child.ToString() );
				node.Tag = child;

				if ( child == oSelected ) nSelected = node;

				TreeNode n = AddNodes( node.Nodes, child, oSelected );
				if ( n != null ) nSelected = n;
			}

			return nSelected;
		}

		private void TreeView_AfterSelect( object sender, System.Windows.Forms.TreeViewEventArgs e )
		{
			INode n = e.Node.Tag as INode;

			TextBoxCount.Text = ( n == null ) ? "NULL" : n.Count.ToString( CultureInfo.CurrentUICulture );
		}

//-----------------------------------------------------------------------------

		private void TextBoxHandlers_KeyDown( object sender, System.Windows.Forms.KeyEventArgs e )
		{
			if ( e.KeyCode == Keys.Delete ) TextBoxHandlers.Clear();
			if ( e.KeyCode == Keys.Back   ) TextBoxHandlers.Clear();
		}

		private void TextBoxHandlers_DoubleClick( object sender, System.EventArgs e )
		{
			TextBoxHandlers.Clear();
		}

//-----------------------------------------------------------------------------

		private void Tree_Validate( object sender, NodeTreeDataEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Validate : " + e.Data + "\r\n";
		}

		private void Tree_Clearing( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Clearing\r\n";
		}

		private void Tree_Cleared( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Cleared\r\n";
		}

		private void Tree_Setting( object sender, NodeTreeDataEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Setting : " + e.Data + "\r\n";
		}

		private void Tree_SetDone( object sender, NodeTreeDataEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : SetDone : " + e.Data + "\r\n";
		}

		private void Tree_Inserting( object sender, NodeTreeInsertEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Inserting " + e.Operation + " : " + e.Node + "\r\n";
		}

		private void Tree_Inserted( object sender, NodeTreeInsertEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Inserted  " + e.Operation + " : " + e.Node + "\r\n";
		}

		private void Tree_Cutting( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Cutting\r\n";
		}

		private void Tree_CutDone( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : CutDone\r\n";
		}

		private void Tree_Copying( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Copying : " + e.Node + "\r\n";
		}

		private void Tree_Copied( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : Copied  : " + e.Node + "\r\n";
		}

		private void Tree_DeepCopying( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : DeepCopying : " + e.Node + "\r\n";
		}

		private void Tree_DeepCopied( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Tree: " + sender + " : DeepCopied  : " + e.Node + "\r\n";
		}

//-----------------------------------------------------------------------------

		private void Node_Validate( object sender, NodeTreeDataEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Validate : " + e.Data + "\r\n";
		}
/*
		private void Node_Clearing( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Clearing\r\n";
		}

		private void Node_Cleared( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Cleared\r\n";
		}
*/
		private void Node_Setting( object sender, NodeTreeDataEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Setting : " + e.Data + "\r\n";
		}

		private void Node_SetDone( object sender, NodeTreeDataEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : SetDone : " + e.Data + "\r\n";
		}

		private void Node_Inserting( object sender, NodeTreeInsertEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Inserting " + e.Operation + " : " + e.Node + "\r\n";
		}

		private void Node_Inserted( object sender, NodeTreeInsertEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Inserted  " + e.Operation + " : " + e.Node + "\r\n";
		}

		private void Node_Cutting( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Cutting\r\n";
		}

		private void Node_CutDone( object sender, EventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : CutDone\r\n";
		}

		private void Node_Copying( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Copying : " + e.Node + "\r\n";
		}

		private void Node_Copied( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : Copied  : " + e.Node + "\r\n";
		}

		private void Node_DeepCopying( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : DeepCopying : " + e.Node + "\r\n";
		}

		private void Node_DeepCopied( object sender, NodeTreeNodeEventArgs e )
		{
			TextBoxHandlers.Text += "Node: " + sender + " : DeepCopied  : " + e.Node + "\r\n";
		}

//-----------------------------------------------------------------------------

		private object CreateLittleObject()
		{
			return new Element( "New Element" );
		}

		private void ButtonInsertPreviousObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.InsertPrevious( CreateLittleObject() );

			OnViewRefresh();
		}

		private void ButtonInsertNextObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.InsertNext( CreateLittleObject() );

			OnViewRefresh();
		}

		private void ButtonInsertChildObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.InsertChild( CreateLittleObject() );

			OnViewRefresh();
		}

		private void ButtonAddObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.Add( CreateLittleObject() );

			OnViewRefresh();
		}

		private void ButtonAddChildObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.AddChild( CreateLittleObject() );

			OnViewRefresh();
		}

//-----------------------------------------------------------------------------

		private ITree CreateLittleTree()
		{
			ITree t = NodeTree.NewTree();
			t.AddChild( new Element( "New node 1" ) );
			t.AddChild( new Element( "New node 2" ) )
				.AddChild( new Element( "New node 21" ) )
				.InsertNext( new Element( "New node 22" ) )
					.AddChild( new Element( "New node 221" ) );

			return t;
		}

		private void ButtonInsertPreviousTree_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.InsertPrevious( CreateLittleTree() );

			OnViewRefresh();
		}

		private void ButtonInsertNextTree_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.InsertNext( CreateLittleTree() );

			OnViewRefresh();
		}

		private void ButtonInsertChildTree_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.InsertChild( CreateLittleTree() );

			OnViewRefresh();
		}

		private void ButtonAddTree_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.Add( CreateLittleTree() );

			OnViewRefresh();
		}

		private void ButtonAddChildTree_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.AddChild( CreateLittleTree() );

			OnViewRefresh();
		}


//-----------------------------------------------------------------------------

		private void ButtonInsertInteger_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			ITree t = NodeTree.NewTree();
			t.AddChild( 42 );
		
			n.InsertChild( t );

			OnViewRefresh();
		}

		private void ButtonInsertNode_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			ITree t = NodeTree.NewTree();
			INode NewNode = t.AddChild( "NewNode" );

			n.InsertChild( NewNode );

			OnViewRefresh();	
		}


//-----------------------------------------------------------------------------

		private void ButtonINodeEnumerator_Click(object sender, System.EventArgs e)
		{
			INode parent = TreeView.SelectedNode.Tag as INode;
			if ( parent == null ) return;

			string s = parent + " :\n\n";
			foreach ( INode child in parent )
				s += child + "\n";

			MessageBox.Show( s, "Tree Test" );
		}

		private void ButtonITreeEnumerator_Click(object sender, System.EventArgs e)
		{
			INode parent = TreeView.SelectedNode.Tag as INode;
			if ( parent == null ) return;

			ITree tree = parent.Tree;

			string s = tree + " :\n\n";
			foreach ( INode child in tree )
				s += child + "\n";

			MessageBox.Show( s, "Tree Test" );
		}

		private void ButtonAllChildrenEnumerator_Click(object sender, System.EventArgs e)
		{
			INode parent = TreeView.SelectedNode.Tag as INode;
			if ( parent == null ) return;

			string s = parent + " :\n\n";
			foreach ( INode child in parent.AllChildren )
				s += child + "\n";

			MessageBox.Show( s, "Tree Test" );
		}

		private void ButtonDirectChildrenEnumerator_Click( object sender, System.EventArgs e )
		{
			INode parent = TreeView.SelectedNode.Tag as INode;
			if ( parent == null ) return;

			string s = parent + " :\n\n";
			foreach ( INode child in parent.DirectChildren )
				s += child + "\n";

			MessageBox.Show( s, "Tree Test" );
		}

		private void ButtonInReverseEnumerator_Click(object sender, System.EventArgs e)
		{
			INode parent = TreeView.SelectedNode.Tag as INode;
			if ( parent == null ) return;

			string s = parent + " :\n\n";
			foreach ( INode child in parent.DirectChildrenInReverse )
				s += child + "\n";

			MessageBox.Show( s, "Tree Test" );
		}

//-----------------------------------------------------------------------------

		private void ButtonCopyToArray_Click( object sender, System.EventArgs e )
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			Element[] a = new Element[ n.Count ];

			n.CopyTo( a, 0 );

			string s = n + " :\n\n";
			foreach ( Element o in a )
				s += o + "\n";

			MessageBox.Show( s );
		}


//-----------------------------------------------------------------------------

		private void ButtonCut_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			treeClipboard = n.Cut();

			OnViewRefresh();		
		}

		private void ButtonCopy_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			treeClipboard = n.Copy();

			OnViewRefresh();		
		}

		private void ButtonDeepCopy_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			treeClipboard = n.DeepCopy();

			OnViewRefresh();		
		}

		private void ButtonDelete_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.Remove();

			OnViewRefresh();		
		}

//-----------------------------------------------------------------------------

		private void ButtonSetObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			oSetObject = n.Data;
		}

		private void ButtonContainsObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			if ( n.Contains( oSetObject ) )
				MessageBox.Show( "Node contains object", "Tree Test" );
			else
				MessageBox.Show( "Node does not contain object", "Tree Test" );
		}

		private void ButtonCutObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;
		
			treeClipboard = n.Cut( oSetObject );

			OnViewRefresh();		
		}

		private void ButtonCopyObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;
		
			treeClipboard = n.Copy( oSetObject );

			OnViewRefresh();		
		}

		private void ButtonDeepCopyObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;
		
			treeClipboard = n.DeepCopy( oSetObject );

			OnViewRefresh();		
		}

		private void ButtonRemoveObject_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.Remove( oSetObject );

			OnViewRefresh();		
		}


//-----------------------------------------------------------------------------

		private void ButtonMoveToParent_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.MoveToParent();

			OnViewRefresh();
		}

		private void ButtonMoveToPrevious_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.MoveToPrevious();

			OnViewRefresh();
		}

		private void ButtonMoveToNext_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.MoveToNext();

			OnViewRefresh();
		}

		private void ButtonMoveToChild_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.MoveToChild();

			OnViewRefresh();
		}

		private void ButtonMoveToFirst_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.MoveToFirst();

			OnViewRefresh();
		}

		private void ButtonMoveToLast_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.MoveToLast();

			OnViewRefresh();
		}

		private void ButtonSetData_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			n.Data = new Element( "Element" );

			OnViewRefresh();
		}

		private void ButtonClear_Click(object sender, System.EventArgs e)
		{
			INode n = TreeView.SelectedNode.Tag as INode;
			if ( n == null ) return;

			( (NodeTree) n ).Clear();

			OnViewRefresh();
		}

//-----------------------------------------------------------------------------

	}

//-----------------------------------------------------------------------------

	internal class Element //: IDeepCopy
	{
		private string _data = null;

		public Element( string s )
		{
			_data = s;
		}

#if true
		public Element( Element o )
		{
			_data = o._data + " *COPYCTOR*";
		}
#endif

		public override string ToString()
		{
			return _data;
		}

		public object CreateDeepCopy()
		{
			return new Element( _data + " *DEEPCOPY*" );
		}
	}

//-----------------------------------------------------------------------------

}