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

namespace Volian.Controls.Library
{
	public partial class DisplayRO : UserControl
	{
		#region Properties
		private ROFST _CurROFST = null;
		private ROFST _MyROFST;
		public ROFST MyROFST
		{
			get { return _MyROFST; }
			set
			{ 
				_MyROFST = value;
				LoadTree();
			}
		}
		private string _CurROLink;
		public string CurROLink
		{
			get { return _CurROLink; }
			set
			{
				_CurROLink = value;
				if (_CurROLink != null)
				{
					UpdateROTree();
					_SavCurROLink = _CurROLink;
				}
			}
		}
		private string _SavCurROLink;
		private ItemInfo _CurItem;
		public ItemInfo CurItem
		{
			get { return _CurItem; }
			set { _CurItem = value; }
		}
		private DisplayRTB _MyRTB;
		public DisplayRTB MyRTB
		{
			get { return _MyRTB; }
			set { _MyRTB = value; }
		}
		#endregion
		#region Constructors
		public DisplayRO()
		{
			InitializeComponent();
		}
		//public DisplayRO(ROFST rofst, ItemInfo curitm, bool modify, DisplayRTB rtb)
		//{
		//    _MyROFST = rofst;
		//    _CurItem = curitm;
		//    _MyRTB = rtb;
		//    InitializeComponent();
		//    LoadTree();
		//}
		#endregion
		#region Events
		private void tvROFST_AfterSelect(object sender, TreeViewEventArgs e)
		{
			if (e.Node.Tag is ROFST.rochild)
			{
				ROFST.rochild chld = (ROFST.rochild)e.Node.Tag;
				if (chld.type == 1 && chld.value != null) tbROValue.Text = chld.value;
				else tbROValue.Text = null;
			}
			else
				tbROValue.Text = null;
		}

		private void tvROFST_BeforeExpand(object sender, TreeViewCancelEventArgs e)
		{
			LoadChildren(e.Node);
		}
		private void LoadChildren(TreeNode tn)
		{
			object tag = tn.Tag;
			if (tn.FirstNode != null && tn.FirstNode.Text != "VLN_DUMMY_FOR_TREE") return;  // already loaded.
			if (tn.FirstNode != null && tn.FirstNode.Text == "VLN_DUMMY_FOR_TREE") tn.FirstNode.Remove();
			ROFST.rochild[] chld = null;

			if (tn.Tag is ROFST.rodbi)
			{
				ROFST.rodbi db = (ROFST.rodbi)tn.Tag;
				chld = db.children;
			}
			else if (tn.Tag is ROFST.rochild)
			{
				ROFST.rochild ch = (ROFST.rochild)tn.Tag;
				chld = ch.children;
			}
			else
			{
				Console.WriteLine("error - no type");
				return;
			}
			// if children, add dummy node
			if (chld != null && chld.Length > 0)
			{
				for (int i = 0; i < chld.Length; i++)
				{
					TreeNode tmp = null;
					// if this is a group, i.e. type 0, add a dummy node
					if (chld[i].type == 0 && chld[i].children == null)
						//skip it.
						Console.WriteLine("ro junk");
					else if (chld[i].type == 1 && chld[i].value == null)
					{
						tmp = new TreeNode(chld[i].title);
						tmp.Tag = chld[i];
						tn.Nodes.Add(tmp);
						TreeNode sub = new TreeNode("VLN_DUMMY_FOR_TREE");
						tmp.Nodes.Add(sub);
					}
					else
					{
						tmp = new TreeNode(chld[i].title);
						tmp.Tag = chld[i];
						tn.Nodes.Add(tmp);
					}
				}
			}
		}
		private void LoadTree()
		{
			if (_MyROFST == null) return;
			if (_MyROFST == _CurROFST) return;
			_CurROFST = _MyROFST;
			for (int i = 0; i < _MyROFST.myHdr.myDbs.Length; i++)
			{
				TreeNode tn = new TreeNode(_MyROFST.myHdr.myDbs[i].dbiTitle);
				tn.Tag = _MyROFST.myHdr.myDbs[i];
				tvROFST.Nodes.Add(tn);
				AddDummyGroup(_MyROFST.myHdr.myDbs[i], tn);
			}
		}
		private void AddDummyGroup(ROFST.rodbi rodbi, TreeNode tn)
		{
			if (rodbi.children != null && rodbi.children.Length > 0)
			{
				TreeNode tmp = new TreeNode("VLN_DUMMY_FOR_TREE");
				tn.Nodes.Add(tmp);
			}
		}
		private void UpdateROTree()
		{
			// walk down from root of tree, expanding values in the string
			// that represents the ro link.
			string tmpstr = _CurROLink;
			int sp = tmpstr.IndexOf(" ");	// because parse of ro info is wrong!!
			int rousageid = System.Convert.ToInt32(tmpstr.Substring(0, sp));
			string roid = tmpstr.Substring(sp + 1, tmpstr.Length - sp - 1);
			string db = roid.Substring(0, 4);

			ROFST.rochild rochld = MyROFST.GetRoChild(roid.Substring(0, 12).ToUpper());
			// use this to walk up tree until database - this is used to expand tree.
			List<int> path = new List<int>();
			int myid = rochld.ID;
			while (myid > 0)
			{
				path.Insert(0,myid);
				myid = rochld.ParentID;
				rochld = MyROFST.GetRoChildFromID(myid);
				if (rochld.ID == -1) myid = -1;
			}
			TreeNode tnExpand = null;
			int titm = System.Convert.ToInt32(db);
			// find database first
			foreach (TreeNode tn in tvROFST.Nodes)
			{
				ROFST.rodbi thisdb = (ROFST.rodbi)tn.Tag;
				if (thisdb.dbiID == titm)
				{
					LoadChildren(tn);
					tnExpand = tn;
					break;
				}
			}
			if (tnExpand == null) return;  // something went wrong?
			// use the path id list to load/find the treeview's nodes.
			foreach (int citm in path)
			{
				if (citm != System.Convert.ToInt32(db))
				{
					LoadChildren(tnExpand);
					tnExpand.Expand();
					foreach (TreeNode tn in tnExpand.Nodes)
					{
						ROFST.rochild chld = (ROFST.rochild)tn.Tag;
						if (chld.ID == citm)
						{
							tnExpand = tn;
							break;
						}
					}
				}
			}

			if (tnExpand != null) tvROFST.SelectedNode = tnExpand;
		}
		private void btnSaveRO_Click(object sender, EventArgs e)
		{
			if (tbROValue.Text == null || tbROValue.Text == "")
			{
				MessageBox.Show("Must select an RO Value from the tree.");
				return;
			}
			Object obj = tvROFST.SelectedNode.Tag;
			if (obj is ROFST.rochild)
			{
				ROFST.rochild roch = (ROFST.rochild) obj;
				string linktxt = string.Format("#Link:ReferencedObject: #xx {0}", roch.roid);
				_MyRTB.InsertRO(tbROValue.Text, linktxt);
			}
		}
		#endregion

		private void btnCancelRO_Click(object sender, EventArgs e)
		{
			_CurROLink = _SavCurROLink;
			UpdateROTree();
		}
	}
}