using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Text;
using System.Windows.Forms;
using VEPROMS.CSLA.Library;

namespace Volian.Controls.Library
{
	//public delegate void vlnTreeViewEvent(object sender, vlnTreeEventArgs args);
	//public delegate bool vlnTreeViewBoolEvent(object sender, vlnTreeEventArgs args);
	//public delegate TreeNode vlnTreeViewTreeNodeEvent(object sender, vlnTreeEventArgs args);
	//public delegate void vlnTreeViewDDEvent(object sender, System.Windows.Forms.DragEventArgs args);
	public partial class vlnTreeView3 : TreeView
	{
		private static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		#region Events
		public event vlnTreeViewEvent NodeSelectionChange;
		private void OnNodeSelectionChange(object sender, vlnTreeEventArgs args)
		{
			if (NodeSelectionChange != null) NodeSelectionChange(sender, args);
		}
		#endregion
		#region Business Methods
		#endregion
		#region Constructors
		public vlnTreeView3()
		{
			InitializeComponent();
			base.AfterSelect += new TreeViewEventHandler(tv_AfterSelect);
		}
		private void tv_AfterSelect(object sender, TreeViewEventArgs e)
		{
			OnNodeSelectionChange(sender, new vlnTreeEventArgs(e.Node));
		}
		#endregion
		private static TreeNode GetTreeNodeFromData(IDataObject datobj)
		{
			foreach (string s in datobj.GetFormats())
			{
				try
				{
					return (TreeNode)datobj.GetData(s);
				}
				catch (Exception ex)
				{
					if (_MyLog.IsErrorEnabled) _MyLog.Error("GetTreeNodeFromData", ex);
				}
			}
			return null;
		}
		private TreeNode Clone(TreeNode tn)
		{

			TreeNode tmp = (TreeNode)tn.Clone();
			ExpandMatch(tmp, tn);
			return tmp;
		}
		private void ExpandMatch(TreeNode tn1, TreeNode tn2)
		{
			if (tn2.IsExpanded) tn1.Expand();
			foreach (TreeNode tc in tn2.Nodes) ExpandMatch(tn1.Nodes[tc.Index], tc);
		}
		private bool IsChild(TreeNode parent, TreeNode child)
		{
			if (parent.Equals(child)) return true;// Check against self
			foreach (TreeNode tc in parent.Nodes) if (IsChild(tc, child)) return true;//Check all children
			return false;// Must not be a child at this level
		}
	}
}