Add-on class to process XML using XPathNavigator into Lithium Tree Control

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Netron.Lithium;
using System.Xml;
using System.Xml.XPath;
using System.Text;

using ConsumeLithium;

namespace SideProject
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
      private Netron.Lithium.LithiumControl lithiumControl;
      private System.Windows.Forms.GroupBox groupBox1;
      private System.Windows.Forms.CheckBox checkBoxAttributesOn;
      private System.Windows.Forms.CheckBox checkBoxAttributesIncluded;
      private System.Windows.Forms.Button RefreshIt;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

         LoadXml(OTA);
         this.lithiumControl.Root.Expand();
         this.lithiumControl.DrawTree();

      }

      String OTA = @"<?xml version='1.0' encoding='utf-8' ?>
                     <Top CodeProject='online'>
                        <Child index='1'>Child data</Child>
                        <Other Show='f'>Other Data</Other>
                        <Final attr1='This' attr2='is' attr3='Radio' attr4='Clash'/>
                     </Top>";



      private void LoadXml(String Xml)
      {

         try
         {
            ConsumeXml LithiumHighway           = new ConsumeXml(Xml);
            LithiumHighway.AttributesAsChildren = checkBoxAttributesIncluded.Checked;
            LithiumHighway.AttributesShow       = checkBoxAttributesOn.Checked;

            LithiumHighway.Process(this.lithiumControl.Root);

            this.lithiumControl.Root.Move(new Point(20-this.lithiumControl.Root.X, 
                                          Convert.ToInt32(this.lithiumControl.Height/2)-this.lithiumControl.Root.Y));

            // See the Lithium Example for this Node level highlighter, otherwise comment out.			
            ColoringVisitor visitor = new ColoringVisitor(); 

            lithiumControl.BreadthFirstTraversal(visitor);

         }
         catch (System.Exception ex)
         {
            MessageBox.Show("Exception Caught: " + ex.Message);
         }


      }

      ColoringVisitor CV = new ColoringVisitor();

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		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.lithiumControl = new Netron.Lithium.LithiumControl();
         this.groupBox1 = new System.Windows.Forms.GroupBox();
         this.checkBoxAttributesOn = new System.Windows.Forms.CheckBox();
         this.checkBoxAttributesIncluded = new System.Windows.Forms.CheckBox();
         this.RefreshIt = new System.Windows.Forms.Button();
         this.groupBox1.SuspendLayout();
         this.SuspendLayout();
         // 
         // lithiumControl
         // 
         this.lithiumControl.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
            | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
         this.lithiumControl.AutoScroll = true;
         this.lithiumControl.BranchHeight = 120;
         this.lithiumControl.ConnectionType = Netron.Lithium.ConnectionType.Default;
         this.lithiumControl.LayoutDirection = Netron.Lithium.TreeDirection.Horizontal;
         this.lithiumControl.LayoutEnabled = true;
         this.lithiumControl.Location = new System.Drawing.Point(0, 0);
         this.lithiumControl.Name = "lithiumControl";
         this.lithiumControl.Size = new System.Drawing.Size(846, 582);
         this.lithiumControl.TabIndex = 0;
         this.lithiumControl.WordSpacing = 20;
         // 
         // groupBox1
         // 
         this.groupBox1.Controls.Add(this.RefreshIt);
         this.groupBox1.Controls.Add(this.checkBoxAttributesIncluded);
         this.groupBox1.Controls.Add(this.checkBoxAttributesOn);
         this.groupBox1.Location = new System.Drawing.Point(857, 5);
         this.groupBox1.Name = "groupBox1";
         this.groupBox1.Size = new System.Drawing.Size(181, 574);
         this.groupBox1.TabIndex = 1;
         this.groupBox1.TabStop = false;
         this.groupBox1.Text = "Actions";
         // 
         // checkBoxAttributesOn
         // 
         this.checkBoxAttributesOn.Location = new System.Drawing.Point(8, 17);
         this.checkBoxAttributesOn.Name = "checkBoxAttributesOn";
         this.checkBoxAttributesOn.Size = new System.Drawing.Size(155, 24);
         this.checkBoxAttributesOn.TabIndex = 0;
         this.checkBoxAttributesOn.Text = "Attributes On";
         // 
         // checkBoxAttributesIncluded
         // 
         this.checkBoxAttributesIncluded.Location = new System.Drawing.Point(8, 52);
         this.checkBoxAttributesIncluded.Name = "checkBoxAttributesIncluded";
         this.checkBoxAttributesIncluded.Size = new System.Drawing.Size(155, 24);
         this.checkBoxAttributesIncluded.TabIndex = 1;
         this.checkBoxAttributesIncluded.Text = "Attributes As Children";
         // 
         // RefreshIt
         // 
         this.RefreshIt.Location = new System.Drawing.Point(10, 81);
         this.RefreshIt.Name = "RefreshIt";
         this.RefreshIt.TabIndex = 2;
         this.RefreshIt.Text = "Redo";
         this.RefreshIt.Click += new System.EventHandler(this.RefreshIt_Click);
         // 
         // Form1
         // 
         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(1042, 582);
         this.Controls.Add(this.groupBox1);
         this.Controls.Add(this.lithiumControl);
         this.Name = "Form1";
         this.Text = "Form1";
         this.groupBox1.ResumeLayout(false);
         this.ResumeLayout(false);

      }
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

      private void RefreshIt_Click(object sender, System.EventArgs e)
      {
         this.lithiumControl.NewDiagram();
         LoadXml(OTA);
         this.lithiumControl.Root.Expand();
         this.lithiumControl.DrawTree();      
      }

	}


   /// <summary>
   /// This example colors the level in a gradient
   /// which emphasizes the nodes on the same level.
   /// Since the level is stored in the ShapeBase you can use either the 
   /// BFT or the DFT algorithm.
   /// </summary>
   public class ColoringVisitor : IPrePostVisitor
   {
      #region Fields
      public event Messager OnInfo;
      Color[] gradient;
      #endregion

      #region Properties
      public bool IsDone
      {
         get
         {			
            return false;
         }
      }

      #endregion

      #region Constructor
      /// <summary>
      /// Default ctor
      /// </summary>
      public ColoringVisitor()
      {			
         gradient = new Color[10]{
                                    Color.RoyalBlue,
                                    Color.CornflowerBlue,
                                    Color.LightSteelBlue,
                                    Color.SteelBlue,
                                    Color.PowderBlue,
                                    Color.Lavender,
                                    Color.LightCyan,
                                    Color.Azure,
                                    Color.Thistle,
                                    Color.Plum
                                 };

      }
      #endregion

      #region Methods
		
      public void PreVisit(ShapeBase shape)
      {
			
      }

      public  void Visit(ShapeBase shape)
      {
         shape.ShapeColor = gradient[shape.Level%10]; //if above level 9 re-use the array
      }


      public  void Darken(ShapeBase shape)
      {
         shape.ShapeColor = Color.Tomato; //if above level 9 re-use the array
      }

  
      public void PostVisit(ShapeBase shape)
      {
		
      }

      private void RaiseInfo(string msg)
      {
         if(OnInfo!=null)
            OnInfo(msg);
      }

      #endregion

   }
}