using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing;
using VEPROMS.CSLA.Library;
using System.Text.RegularExpressions;
using System.Reflection;

namespace Volian.Controls.Library
{
	public partial class StepRTBSimple : RichTextBox, IStepRTB
	{
		#region Fields
		private RTBItem _MyRTBItem;
		private IContainer _Container = null;
		private ItemInfo _MyItemInfo;
		private Size _AdjustSize;
		private Rectangle _ContentsRectangle;
		private E_EditPrintMode _EpMode;
		private string _MyClassName;
		private E_ViewMode _VwMode;
		#endregion
		#region RTB 4.1 Not being used
		//[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
		//static extern IntPtr LoadLibrary(string lpFileName);

		//protected override CreateParams CreateParams
		//{
		//  get
		//  {
		//    CreateParams prams = base.CreateParams;
		//    if (LoadLibrary("msftedit.dll") != IntPtr.Zero)
		//    {
		//      //prams.ExStyle |= 0x020; // transparent
		//      prams.ClassName = "RICHEDIT50W";
		//    }
		//    return prams;
		//  }
		//}

		//[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
		//static extern IntPtr LoadLibrary(string lpFileName);

		//protected override CreateParams CreateParams
		//{
		//  get
		//  {
		//    CreateParams prams = base.CreateParams;
		//    if (LoadLibrary("riched20.dll") != IntPtr.Zero)
		//    {
		//      //prams.ExStyle |= 0x020; // transparent
		//      prams.ClassName = "RICHEDIT20W";
		//    }
		//    return prams;
		//  }
		//}
		#endregion
		#region Events
		/// <summary>
		/// Occurs in response to Link GoTo
		/// </summary>
		public event StepRTBLinkEvent LinkGoTo;
		/// <summary>
		/// Checks to see if the LinkGoTo event is handled and launches it.
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="args"></param>
		private void OnLinkGoTo(object sender, StepPanelLinkEventArgs args)
		{
			if (LinkGoTo != null) LinkGoTo(sender, args);
		}
		/// <summary>
		/// Occurs when a content or format change causes the box to get taller or shorter 
		/// </summary>
		public event StepRTBEvent HeightChanged;
		/// <summary>
		/// Checks to see if the HeightChanged event is handled and launches it
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="args"></param>
		private void OnHeightChanged(object sender, EventArgs args)
		{
			if (HeightChanged != null) HeightChanged(sender, args);
		}
		#endregion
		#region Properties
		/// <summary>
		/// ItemInfo object associated with the control
		/// </summary>
		/// <param name="match"></param>
		/// <returns></returns>
		public ItemInfo MyItemInfo
		{
			get { return _MyItemInfo; }
			set
			{
				_MyItemInfo = value;
				if (value != null)
				{
				//// TIMING: DisplayItem.TimeIt("rtbMyItem Start");
					//if (value.ItemID == 90)
					//	if(_MyLog.IsInfoEnabled)_MyLog.InfoFormat(value.MyContent.Text);
					string txt = _MyItemInfo.MyContent.Text;
					txt = txt.Replace("\n", "\r\n\\par ");
					//txt = Regex.Replace(txt, "(.){([0-9]*){([0-9 ]*)}}",FixTransition);
					//txt = Regex.Replace(txt, @"(.)\\v TRAN", FixTransition);
					MatchCollection mc = Regex.Matches(txt, @"(.)\\v (TRAN|ReferencedObject)\\v0 ([^\\]*)\\v ([^\\]*)\\v0");
					//string[] parts = Regex.Split(txt, "(.){{(.*)}{(.*)}}");
					if (mc.Count > 0)
					{
						int lastIndex = 0;
						foreach (Match m in mc)
						{
							if(m.Index > lastIndex) AddRtf(txt.Substring(lastIndex,m.Index - lastIndex));
							string linkUrl = "Link:" + ((LinkType)Convert.ToInt32(m.Groups[1].Value[0])).ToString() + ":" + m.Groups[4].Value;
							string linkValue = (m.Groups[2].Value == "TRAN" ? FixTransition(m) : m.Groups[3].Value);
							if (CreateParams.ClassName == "RICHEDIT50W")
								AddLink50(linkUrl, linkValue);
							else
								AddLink20(linkUrl, linkValue);
							//AddRtf(string.Format("{0} \\v ReferencedObject - {1} \\v0",ROValue,ROID));
							lastIndex = m.Index + m.Length;
						}
						AddRtf(txt.Substring(lastIndex, txt.Length - lastIndex));
					}
					else
					{
						AddRtf(txt);
					}
					//// TIMING: DisplayItem.TimeIt("rtbMyItem End");
				}
			}
		}
		public RTBItem MyRTBItem
		{
			get { return _MyRTBItem; }
			set { _MyRTBItem = value; }
		}
		public Size AdjustSize
		{
			get { return _AdjustSize; }
			set { _AdjustSize = value; }
		}
		public Rectangle ContentsRectangle
		{
			get { return _ContentsRectangle; }
			set { _ContentsRectangle = value; }
		}
		public E_EditPrintMode EpMode
		{
			get { return _EpMode; }
			set { _EpMode = value; }
		}
		public string MyClassName
		{
			get { return _MyClassName; }
			set { _MyClassName = value; }
		}
		public E_ViewMode VwMode
		{
			get { return _VwMode; }
			set { _VwMode = value; }
		}
		#endregion
		#region Private Methods
		private string FixTransition(Match match)
		{
			//int transitionID = Convert.ToInt32(match.Groups[2].Value);
			int transitionID = Convert.ToInt32(match.Groups[4].Value.Split(" ".ToCharArray())[1]);
			// Find the transition
			foreach (TransitionInfo ti in _MyItemInfo.MyContent.ContentTransitions)
			{
				if (ti.TransitionID == transitionID)
				{
					string path = ti.PathTo.Replace(" Section PROCEDURE STEPS ", ", ");
					path = path.Replace(" Section PROCEDURE STEPS", "");
					return path;
				}
			}
			return match.Value;
		}
		/// <summary>
		/// Adds the text and hypertext link and sets the style to link
		/// </summary>
		/// <param name="linkUrl">URL - Uniform Resource Locator (Address)</param>
		/// <param name="linkValue">Text descibing location</param>
		private void AddLink20(string linkUrl, string linkValue)
		{
			this.DetectUrls = false;
			RTBAPI.CharFormatTwo charFormat = RTBAPI.GetCharFormat(this, RTBAPI.RTBSelection.SCF_SELECTION);
			int position = SelectionStart = this.TextLength;
			SelectionLength = 0;
			SelectedRtf = @"{\rtf1\ansi " + linkValue + @"\v #" + linkUrl + @"\v0}";
			Select(position, linkValue.Length + linkUrl.Length + 1);
			// Protect the link text to avoid manual changes
			charFormat.dwMask = RTBAPI.CharFormatMasks.CFM_LINK | RTBAPI.CharFormatMasks.CFM_PROTECTED;
			charFormat.dwEffects = RTBAPI.CharFormatEffects.CFE_LINK | RTBAPI.CharFormatEffects.CFE_PROTECTED;
			RTBAPI.SetCharFormat((RichTextBox)this, RTBAPI.RTBSelection.SCF_SELECTION, charFormat);
			this.SelectionStart = this.TextLength;
			this.SelectionLength = 0;
		}
		/// <summary>
		/// Adds a hypertext link to the Rich Text
		/// </summary>
		/// <param name="linkUrl">URL - Uniform Resource Locator (Address)</param>
		/// <param name="linkValue">Text descibing location</param>
		private void AddLink50(string linkUrl, string linkValue)
		{
			this.DetectUrls = false;
			int position = SelectionStart = this.TextLength;
			SelectionLength = 0;
			SelectedRtf = string.Format(@"{{\rtf\field{{\*\fldinst{{HYPERLINK ""www.volian.com #{0}"" }}}}{{\fldrslt{{\cf2\ul {1}}}}}}}", linkUrl, linkValue);
			this.SelectionStart = this.TextLength;
			this.SelectionLength = 0;
		}
		/// <summary>
		/// Adds Rich Text
		/// </summary>
		/// <param name="rtf">this is any text and can include RTF commands or not</param>
		private void AddRtf(string rtf)
		{
			this.SelectedRtf = @"{\rtf1 " + rtf + "}";
		}
		/// <summary>
		/// Used by the constructors to do any standard configuration
		/// </summary>
		private void SetUp()
		{
			BorderStyle = System.Windows.Forms.BorderStyle.None;
			this.DetectUrls = true;
			//ContextMenuStrip = this.contextMenuStrip1;
			//ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.None;
			//this.TextChanged += new EventHandler(VERichTextBox_TextChanged);
			this.ContentsResized += new ContentsResizedEventHandler(StepRTBSimple_ContentsResized);
			//if (Text != "") ResizeForText();
			this.LinkClicked += new LinkClickedEventHandler(StepRTBSimple_LinkClicked);
		}

		void StepRTBSimple_LinkClicked(object sender, LinkClickedEventArgs args)
		{
			OnLinkGoTo(sender, new StepPanelLinkEventArgs(_MyRTBItem, args.LinkText));
		}
		#endregion
		#region Constructors
		public StepRTBSimple()
		{
			InitializeComponent();
			SetUp();
		}
		public StepRTBSimple(IContainer container)
		{
			container.Add(this);
			InitializeComponent();
			_Container = container;
			SetUp();
		}
		#endregion
		#region Event Handlers
		void StepRTBSimple_ContentsResized(object sender, ContentsResizedEventArgs e)
		{
			this.Height = e.NewRectangle.Height;
			OnHeightChanged(sender, new EventArgs());
		}
		#endregion
	}
	[TypeConverter(typeof(ExpandableObjectConverter))]
	public interface IStepRTB
	{
		event StepRTBEvent HeightChanged;
		ItemInfo MyItemInfo { get; set;}
		RTBItem MyRTBItem { get; set;}
		Size AdjustSize { get; set; }
		Rectangle ContentsRectangle { get; set; }
		E_EditPrintMode EpMode { get; set; }
		string MyClassName { get; set; }
		E_ViewMode VwMode { get; set; } 
		// In addition to the HeightChanged event and the MyItem property
		// the constructors below should be created
		// public DisplayRTBSimple()
		// public DisplayRTBSimple(IContainer container)
	}
	public enum LinkType : int
	{
		ReferencedObject = 21,
		Transition = 9516,
		TransitionRange = 9574
	}

}