using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.IO;
using System.Windows.Forms;

namespace NiceTracker.Config
{
	/// <summary>
	/// Summary description for FolderDialog.
	/// </summary>
	public class FolderDialog : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TreeView treeViewFolders;
		private const string ROOT_PATH = "\\";
		private System.Windows.Forms.ImageList imageList1;
		private FolderTreeNode rootNode = null;		

		private const int icoClosed = 0;
		private System.Windows.Forms.TextBox textBoxPath;
		private const int icoOpen = 1;
	
		public FolderDialog()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(FolderDialog));
			this.treeViewFolders = new System.Windows.Forms.TreeView();
			this.imageList1 = new System.Windows.Forms.ImageList();
			this.textBoxPath = new System.Windows.Forms.TextBox();
			// 
			// treeViewFolders
			// 
			this.treeViewFolders.ImageList = this.imageList1;
			this.treeViewFolders.Location = new System.Drawing.Point(8, 32);
			this.treeViewFolders.Size = new System.Drawing.Size(224, 232);
			this.treeViewFolders.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeViewFolders_AfterSelect);
			// 
			// imageList1
			// 
			this.imageList1.Images.Add(((System.Drawing.Image)(resources.GetObject("resource"))));
			this.imageList1.Images.Add(((System.Drawing.Image)(resources.GetObject("resource1"))));
			this.imageList1.ImageSize = new System.Drawing.Size(16, 16);
			// 
			// textBoxPath
			// 
			this.textBoxPath.Location = new System.Drawing.Point(8, 8);
			this.textBoxPath.Size = new System.Drawing.Size(224, 20);
			this.textBoxPath.Text = "";
			// 
			// FolderDialog
			// 
			this.Controls.Add(this.textBoxPath);
			this.Controls.Add(this.treeViewFolders);
			this.Text = "FolderDialog";
			this.Load += new System.EventHandler(this.FolderDialog_Load);

		}
		#endregion

		private void FolderDialog_Load(object sender, System.EventArgs e)
		{
			// Create root node
			rootNode = new FolderTreeNode( ROOT_PATH, ROOT_PATH );
			rootNode.Loaded = true;
			rootNode.ImageIndex = icoOpen;

			treeViewFolders.Nodes.Add( rootNode );

			// Recurse
			prepareFolders( rootNode );

			treeViewFolders.SelectedNode = rootNode;
			rootNode.Expand();

			this.treeViewFolders.BeforeExpand += new TreeViewCancelEventHandler(treeViewFolders_BeforeExpand);			

		}

		private void prepareFolders( FolderTreeNode folderTreeNode )
		{			
			string path = folderTreeNode.FolderPath;

			string[] folders = Directory.GetDirectories( path );

			foreach ( string folder in folders )
			{
				FolderTreeNode subNode = new FolderTreeNode( getFolderName( folder ), folder );
				folderTreeNode.Nodes.Add( subNode );
				folderTreeNode.ImageIndex = icoClosed;
				
				FolderTreeNode dummyNode = new FolderTreeNode( "", "" );
				dummyNode.IsDummy = true;
				subNode.Nodes.Add( dummyNode );
			}
		}

		private void treeViewFolders_BeforeExpand(object sender, TreeViewCancelEventArgs e)
		{						
			FolderTreeNode folderTreeNode = e.Node as FolderTreeNode;
			if ( !folderTreeNode.Loaded )
			{
				if ( (folderTreeNode.Nodes[0] as FolderTreeNode).IsDummy )
				{
					folderTreeNode.Nodes.RemoveAt(0);
				}

				prepareFolders( folderTreeNode );
				
				folderTreeNode.Loaded = true;
			}
		}

		private void treeViewFolders_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
		{
			FolderTreeNode folderTreeNode = e.Node as FolderTreeNode;
			textBoxPath.Text = folderTreeNode.FolderPath;
		}

		private string getFolderName( string str )
		{
			int idx = str.LastIndexOf( '\\' );

			if ( idx != -1 && str.Length > 1 )
			{
				int st = idx + 1;
				int len = str.Length - st;
				return str.Substring( st, len );
			}
			else
			{
				return str;
			}
		}

		private string stripExtraSlash(string str) 
		{
			string path = "";
			if ( str.Length > 1 && str[0] == '\\' )
				path = str.Substring( 1, str.Length - 1 );
			else
				path = str;

			return path;
		}

		public string SelectedPath
		{
			get
			{
				return textBoxPath.Text;
			}
			set
			{
				if ( Directory.Exists( value ) )
					textBoxPath.Text = value;
				else
					textBoxPath.Text = ROOT_PATH;
			}
		}
					 
	}
}