using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
using VEPROMS.CSLA.Library;
using Volian.Controls.Library;
using System.Reflection;
using LBWordLibrary;

namespace Volian.Controls.Library
{
	public partial class DSOTabPanel : DevComponents.DotNetBar.PanelDockContainer
	{
		#region Private Fields
		private DisplayTabControl _MyDisplayTabControl;
		private static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		private AxDSOFramer.AxFramerControl _MyDSOFramer;
		private TransparentPanel _MyTransparentPanel;
		private static int _Count = 0;
		private DocumentInfo _MyDocumentInfo;
		private int _MyCount;
		private DisplayTabItem _MyDisplayTabItem;
		private DSOFile _DSOFile;
		public static int MSWordLimit = 10;
		#endregion
		#region Public Properties
		private String _SearchString;
		public String SearchString
		{
			get { return _SearchString; }
			set { _SearchString = value; FindSearchString(); }
		}
		/// <summary>
		/// Count of DSO Pages open.  Limited to 18 in DisplayTabControl
		/// </summary>
		public static int Count
		{
			get { return _Count; }
			set { _Count = value; }
		}
		/// <summary>
		/// Pointer to the related DisplayTabItem
		/// </summary>
		public DisplayTabItem MyDisplayTabItem
		{
			get { return _MyDisplayTabItem; }
			set 
			{ 
				_MyDisplayTabItem = value;
				_MyDisplayTabItem.Visible = false;
				_MyDisplayTabItem.Visible = true;
			}
		}
		/// <summary>
		/// DocumentInfo record for the Word document
		/// </summary>
		public DocumentInfo MyDocumentInfo
		{
			get { return _MyDocumentInfo; }
		}
		/// <summary>
		/// Temporary Word file used for editing.
		/// </summary>
		internal DSOFile MyDSOFile
		{
			get
			{
				if (_DSOFile == null)
					_DSOFile = new DSOFile(_MyDocumentInfo);
				return _DSOFile;
			}
		}
		/// <summary>
		/// Dirty status.  Only saved if dirty.
		/// </summary>
		public bool IsDirty
		{
			get 
			{
				if (_MyDSOFramer == null) return false;
				LBDocumentClass doc = new LBDocumentClass(_MyDSOFramer.ActiveDocument);
				return !doc.Saved; 
			}
		}
		public E_ViewMode PanelViewEditMode = E_ViewMode.Edit;
		#endregion
		//private frmPG _frm = null;
		#region Constructors
		private Timer _RefreshTimer;
		public DSOTabPanel(DocumentInfo documentInfo, DisplayTabControl myDisplayTabControl)
		{
			_MyDisplayTabControl = myDisplayTabControl;
			InitializeComponent();
			SetupDSOTabPanel();
			_MyDocumentInfo = documentInfo;
			SetupDSO();
			_RefreshTimer = new Timer();	// Enabled is false and interval is 1/10th of second.
			ClientSizeChanged += new EventHandler(DSOTabPanel_ClientSizeChanged);
			_RefreshTimer.Tick += new EventHandler(_RefreshTimer_Tick);
			//_frm = new frmPG(_MyDSOFramer);
			//_frm.Show();
		}
		void _RefreshTimer_Tick(object sender, EventArgs e)
		{
			_RefreshTimer.Enabled = false;
			if(_MyDSOFramer != null)
				_MyDSOFramer.Focus();
		}
		void DSOTabPanel_ClientSizeChanged(object sender, EventArgs e)
		{
			_RefreshTimer.Enabled = false;		// This assures that interval is used from last event.
			_RefreshTimer.Enabled = true;
		}
		#endregion
		#region Private Methods
		private void SetupDSOTabPanel()
		{
			Dock = System.Windows.Forms.DockStyle.Fill; // Automatically Fill the panel
		}
		private void SetupDSO()
		{
			_Count++; // Increment the count of open Word documents (Limit = MSWordLimit)
			_MyCount = _Count;
			this._MyTransparentPanel = new TransparentPanel();
			this._MyDSOFramer = new AxDSOFramer.AxFramerControl();
			((System.ComponentModel.ISupportInitialize)(this._MyDSOFramer)).BeginInit();
			this.Controls.Add(this._MyDSOFramer);
			this.Controls.Add(this._MyTransparentPanel); // A transparent panel is added over top of the DSO Framer window so that
			// the related tab can be activated when the user clicks on a Word Document.  Since the Word document is actually running
			// in a different thread, it does not behave properly with focus events.
			this.components.Add(this._MyDSOFramer);
			this.components.Add(this._MyTransparentPanel);
			this._MyTransparentPanel.Dock = System.Windows.Forms.DockStyle.Fill;
			this._MyTransparentPanel.Font = new System.Drawing.Font("Tahoma", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
			this._MyTransparentPanel.ForeColor = System.Drawing.Color.Brown; // This is the color used to show InActive on the right side on the Word
			// document menu line.
			//this._MyTransPanel.Location = new System.Drawing.Point(0, 0);
			//this._MyTransPanel.Name = "transPanel1";
			//this._MyTransPanel.Size = new System.Drawing.Size(370, 423);
			//this._MyTransPanel.TabIndex = 1;
			this._MyTransparentPanel.Click += new EventHandler(_MyTransparentPanel_Click);
			this._MyDSOFramer.Dock = System.Windows.Forms.DockStyle.Fill;
			//System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(WordDSOTab));
			//this._DSOFramer.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("_FC.OcxState")));
			((System.ComponentModel.ISupportInitialize)(this._MyDSOFramer)).EndInit();
			try
			{
				this._MyDSOFramer.Open(MyDSOFile.MyFile.FullName);
				this._MyDSOFramer.Menubar = false;
				this._MyDSOFramer.Titlebar = false;
				//if (_MyCount < 20)
				//	this._MyDSOFramer.FrameHookPolicy = DSOFramer.dsoFrameHookPolicy.dsoResetNow;
				this._MyDSOFramer.BeforeDocumentClosed += new AxDSOFramer._DFramerCtlEvents_BeforeDocumentClosedEventHandler(_MyDSOFramer_BeforeDocumentClosed);
				this._MyDSOFramer.OnSaveCompleted += new AxDSOFramer._DFramerCtlEvents_OnSaveCompletedEventHandler(_MyDSOFramer_OnSaveCompleted);
				//this._MyDSOFramer.LostFocus += new EventHandler(_MyDSOFramer_LostFocus);
				//this._MyDSOFramer.GotFocus += new EventHandler(_MyDSOFramer_GotFocus);
				//this._MyDSOFramer.Enter += new EventHandler(_MyDSOFramer_Enter);
				//this._MyDSOFramer.Leave += new EventHandler(_MyDSOFramer_Leave);
				//this._MyDSOFramer.OnActivationChange += new AxDSOFramer._DFramerCtlEvents_OnActivationChangeEventHandler(_MyDSOFramer_OnActivationChange);
				this.Enter += new EventHandler(DSOTabPanel_Enter);
				//this.Leave += new EventHandler(DSOTabPanel_Leave);
				//this.GotFocus += new EventHandler(DSOTabPanel_GotFocus);
				//this.LostFocus += new EventHandler(DSOTabPanel_LostFocus);
				Application.DoEvents();
				LBDocumentClass doc = new LBDocumentClass(_MyDSOFramer.ActiveDocument);
				// The following line corrects Symbol characters in MSWord Sections
				// CheckForSymbolCharacters(doc);
				InitializeWordDocument(doc);
				FindSearchString();
			}
			catch (Exception ex)
			{
				string message = ShowException(ex);
				Console.WriteLine("\r\n-------------\r\n{0}{1}{2}\r\n-------------\r\n", MyDSOFile.MyFile.FullName, ex.GetType().Name, message);
				// TODO: Should output a message
				// TODO: Should try to do a direct open using Word.
			}
		}
		public void FixSymbolCharacters()
		{
			CheckForSymbolCharacters(new LBDocumentClass(_MyDSOFramer.ActiveDocument));
		}
		private void CheckForSymbolCharacters(LBDocumentClass doc)
		{
			string fontHasSymbolCharacters = doc.FontHasSymbolCharacters;
			if (fontHasSymbolCharacters != null)
			{
				// do a string for the log message, depending if this is a libdoc.
				string msg = null;
				if (MyDocumentInfo.LibTitle == null || MyDocumentInfo.LibTitle == "")
				{
					if (MyDocumentInfo.DocumentEntryCount>0)
						msg = string.Format("Procedure = {0}, Section {1}", MyDocumentInfo.DocumentEntries[0].MyContent.ContentItems[0].MyProcedure, MyDocumentInfo.DocumentEntries[0].MyContent.ContentItems[0].DisplayText);
					else
					msg = string.Format("Procedure and Section can't be determined");
				}
				else
					msg = string.Format("Library Document: {0}", MyDocumentInfo.LibTitle);
				if (doc.AttemptToFixASymbolCharacter())		// font is installed correctly, 'fix' this file.
				{
					//MessageBox.Show(string.Format("This document uses the font {0}, which previously had an error.\r\nThe program will attempt to fix the problem for this Word section.", fontHasSymbolCharacters),
					//	"Font Being Corrected", MessageBoxButtons.OK);
					doc.FixSymbolCharacters();
					_MyLog.Info(string.Format("Font problem being fixed in Font: {0}, {1}.",fontHasSymbolCharacters, msg));
				}
				else	
				{
					MessageBox.Show(string.Format("This document uses the font {0}, which has an error.\r\n\r\nReinstall this font.", fontHasSymbolCharacters),
						"Reinstall Font", MessageBoxButtons.OK);
					_MyLog.Info(string.Format("Font problem found in Font: {0}, {1}.",fontHasSymbolCharacters, msg));
				}
			}
		}

		private void InitializeWordDocument(LBDocumentClass doc)
		{
			if (MyDocumentInfo.Config == null || MyDocumentInfo.Config == "")
			{
				DocStyle ds = MyDocumentInfo.DocumentEntries[0].MyContent.ContentItems[0].MyDocStyle;
				doc.Application.Selection.Font.Name = ds.Font.Family;
				doc.Application.Selection.Font.Size = (float)ds.Font.Size;
				doc.Application.Selection.ParagraphFormat.SpaceBefore = 0;
				doc.Application.Selection.ParagraphFormat.SpaceAfter = 0;
				doc.Application.Selection.ParagraphFormat.LineSpacingRule = LBWdLineSpacing.wdLineSpaceExactly;
				doc.Application.Selection.ParagraphFormat.LineSpacing = 72 / 6;    // for 6 LPI
				MSWordToPDF.AdjustMargins(ds, doc, false);
			}
		}
		public void FindSearchString()
		{
			if (SearchString == null) return;
			// Get the Document
			LBDocumentClass wordDoc  = new LBDocumentClass(_MyDSOFramer.ActiveDocument);
			//LBSelection sel = wordDoc.Application.Selection;
			LBFind find = wordDoc.Application.Selection.Find;
			find.ClearFormatting();
			bool wildCards = SearchString.Contains("?") || SearchString.Contains("*");
			bool found = find.Execute(SearchString, false, false, wildCards, false, false, true, LBWdFindWrap.wdFindContinue, null, null, null, false, false, false, false);
			//Console.WriteLine("find = {0}", found);
		}
		/// <summary>
		/// Text will either replace current selection or be inserted at the current cursor position if no selection
		/// </summary>
		/// <param name="txt"></param>
		public void InsertText(string txt)
		{
			if (txt == null || txt.Length == 0) return; //nothing to insert
			// Get the Document
			LBDocumentClass wordDoc = new LBDocumentClass(_MyDSOFramer.ActiveDocument);
			//This will get the selected range or just the current cursor position
			LBSelection sel = wordDoc.Application.Selection;
			// This will replace the selection or insert at current position
			sel.Text = txt;
		}

		private string ShowException(Exception ex)
		{
			string sep = "\r\n  ";
			StringBuilder sb = new StringBuilder();
			do
			{
				sb.Append(sep + ex.Message);
				sep += "  ";
				ex = ex.InnerException;
			} while (ex != null);
			return sb.ToString();
		}

		//void _MyDSOFramer_Leave(object sender, EventArgs e)
		//{
		//  vlnStackTrace.ShowStack("DSO Leave {0}", this.MyDocumentInfo.DocID);
		//}

		//void _MyDSOFramer_Enter(object sender, EventArgs e)
		//{
		//  vlnStackTrace.ShowStack("DSO Enter {0}", this.MyDocumentInfo.DocID);
		//}

		//void _MyDSOFramer_GotFocus(object sender, EventArgs e)
		//{
		//  vlnStackTrace.ShowStack("DSO Got Focus {0}",this.MyDocumentInfo.DocID);
		//}

		//void _MyDSOFramer_LostFocus(object sender, EventArgs e)
		//{
		//  vlnStackTrace.ShowStack("DSO Lost Focus {0}", this.MyDocumentInfo.DocID);
		//}
		public void EnterPanel()
		{
			DSOTabPanel_Enter(this, new EventArgs());
		}
		//void DSOTabPanel_LostFocus(object sender, EventArgs e)
		//{
		//  vlnStackTrace.ShowStack("DSOTabPanel_LostFocus {0} DocID {1} Index {2} {3}", _In_DSOTabPanel_Enter, this._MyDocumentInfo.DocID, _MyDisplayTabControl.MyBar.SelectedDockTab, sender.GetType().FullName);
		//}
		//void DSOTabPanel_GotFocus(object sender, EventArgs e)
		//{
		//  vlnStackTrace.ShowStack("DSOTabPanel_GotFocus {0} DocID {1} Index {2} {3}", _In_DSOTabPanel_Enter, this._MyDocumentInfo.DocID, _MyDisplayTabControl.MyBar.SelectedDockTab, sender.GetType().FullName);
		//}
		#endregion
		#region Event Handlers
		/// <summary>
		/// Display MyTransparentPanel over the DSOPanel so that the Word "Inactive" appears in the upper right hand corner.
		/// </summary>
		public void InActive()
		{
			_MyTransparentPanel.BringToFront();
		}
		/// <summary>
		/// Force this item to be selected when the transparent window is clicked.
		/// This will in-turn send the Transparent Panel to back and make the DSO Panel
		/// editable.
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		void _MyTransparentPanel_Click(object sender, EventArgs e)
		{
			this.Select();
		}
		/// <summary>
		/// If the user presses the save button, tell the file to save it's contents to the database
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		void _MyDSOFramer_OnSaveCompleted(object sender, AxDSOFramer._DFramerCtlEvents_OnSaveCompletedEvent e)
		{
			// Unfortunately, the only way to handle view mode for DSO Framer is to not save.
			if (PanelViewEditMode == E_ViewMode.View)
			{
				MessageBox.Show("Currently in VIEW mode,\r\n cannot Save " + _MyDisplayTabItem.Tooltip);
				return;
			}
			LBDocumentClass doc = new LBDocumentClass(_MyDSOFramer.ActiveDocument);
			string tmp = GetReflectiveProperty(_MyDSOFramer.ActiveDocument, "FullName");
			if (System.IO.File.Exists(tmp))
				MyDSOFile.FullName = tmp;
			else
				_MyLog.FatalFormat("File does not exist {0}\r\nFile was {1}", tmp, MyDSOFile.FullName);
			// if this was a library document, ask user if it should be saved for all usages.
			bool cvtLibDoc = false;
			EntryInfo myei = MyDisplayTabItem.MyItemInfo.MyContent.MyEntry;
			if (myei != null && myei.MyDocument != null && myei.MyDocument.LibTitle != null && myei.MyDocument.LibTitle != "")
			{
				DialogResult ans = MessageBox.Show("Save as Library Document for all usages?", "Document Save", MessageBoxButtons.YesNo);
				if (ans == DialogResult.No) cvtLibDoc = true;
			}
			MyDSOFile.SaveFile(doc.Length,doc.Ascii,MyDisplayTabItem.MyItemInfo, cvtLibDoc);
			if (cvtLibDoc)
			{
				MyDisplayTabItem.Text = MyDisplayTabItem.MyItemInfo.TabTitle;
				MyDisplayTabItem.Tooltip = MyDisplayTabItem.MyItemInfo.TabToolTip;
				MyDisplayTabItem.SetPrivateTooltip(MyDisplayTabItem.MyItemInfo.TabToolTip);
			}
		}
		/// <summary>
		/// Before a document closes check to see if it's contents should be saved.
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		void _MyDSOFramer_BeforeDocumentClosed(object sender, AxDSOFramer._DFramerCtlEvents_BeforeDocumentClosedEvent e)
		{
			try
			{
				if (!IsBeingDeleted)
					SaveDirty();
				this.Enter -= new EventHandler(DSOTabPanel_Enter);
				// this.Leave -= new EventHandler(DSOTabPanel_Leave);
				// SaveDirty();   // SaveDirty happens in CloseDSO(bool)
			}
			catch (Exception ex)
			{
				_MyLog.Warn("Before Closing Document ", ex);
			}
		}
		public static bool IgnoreEnter = false;
		private bool _In_DSOTabPanel_Enter=false;
		/// <summary>
		/// When a Word document is selected make sure it's tab is activated and 
		/// the SelectedItem for the DisplayTabControl is updated.
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void DSOTabPanel_Enter(object sender, EventArgs e)
		{
			if (IgnoreEnter) return;
			_MyTransparentPanel.SendToBack();

			// Set whether this worddoc is in view/edit mode by checking whether the
			// procedure is in view/edit mode (based on the steppanel.  This occurs on 
			// the enter event so that the mode is determined any time this panel becomes 
			// active.
			// find steptabpanel and its view/edit.  If it doesn't have a steptabpanel
			// use default - edit.  Later when we have ownership, need to use that.
			PanelViewEditMode = E_ViewMode.Edit;	 // default to edit
			if (MyDisplayTabItem.MyItemInfo != null) // lib doc with no associated active procedure defaults to edit
			{
				StepTabPanel stpanel = _MyDisplayTabControl.GetProcedureTabPanel(MyDisplayTabItem.MyItemInfo);
				PanelViewEditMode = (stpanel == null) ? E_ViewMode.Edit : stpanel.MyStepPanel.VwMode;
			}
			try
			{
				_MyDSOFramer.EventsEnabled = true;
				_MyDSOFramer.FrameHookPolicy = DSOFramer.dsoFrameHookPolicy.dsoResetNow;
			}
			catch (Exception ex)
			{
				if (_MyLog.IsErrorEnabled) _MyLog.ErrorFormat("DSOTabPage_Enter", ex);
			}
			if (_In_DSOTabPanel_Enter) return;
			//vlnStackTrace.ShowStack("DSOTabPanel_Enter {0} DocID {1} Index {2} {3}",_In_DSOTabPanel_Enter, this._MyDocumentInfo.DocID, _MyDisplayTabControl.MyBar.SelectedDockTab, sender.GetType().FullName);
			_In_DSOTabPanel_Enter = true;
            if (MyDisplayTabItem.MyItemInfo != null)
    			_MyDisplayTabControl.OnItemSelectedChanged(this,new ItemSelectedChangedEventArgs(MyDisplayTabItem.MyItemInfo));
			_MyDSOFramer.Focus();
			_In_DSOTabPanel_Enter = false;
			_MyDisplayTabControl.SelectedDisplayTabItem = MyDisplayTabItem;
		}
		#endregion
		#region Public Methods
		/// <summary>
		/// Save the contents of the Word Document to a file
		/// and save the file to the database
		/// </summary>
		/// <returns></returns>
		public bool SaveDSO()
		{
			bool result = true;
			try
			{
				_MyDSOFramer.Save();
				_MyDSOFramer_OnSaveCompleted(this, null);
				// These are handled in the method above
				//LBDocumentClass doc = new LBDocumentClass(_MyDSOFramer.ActiveDocument);
				//MyDSOFile.FullName = GetReflectiveProperty(_MyDSOFramer.ActiveDocument, "FullName");
				//MyDSOFile.SaveFile(doc.Length, doc.Ascii);
			}
			catch (Exception ex)
			{
				if (_MyLog.IsErrorEnabled) _MyLog.Error("SaveDSO", ex);
				result = false;
			}
			return result;
		}
		/// <summary>
		/// Check to see if a Word document should be saved.  If it is dirty ask the user if the
		/// changes should be changed.  Save the changes if the user says "yes".
		/// </summary>
		/// <returns></returns>
		public bool SaveDirty()
		{
			if (IsDirty)
			{
				// Unfortunately, the only way to handle view mode for DSO Framer is to not save.
				if (PanelViewEditMode == E_ViewMode.View)
				{
					MessageBox.Show("Currently in VIEW mode,\r\n cannot Save " + _MyDisplayTabItem.Tooltip);
					return false;
				}
				//if (MessageBox.Show("Save changes to " + _MyDisplayTabItem.MyItemInfo.TabTitle + "\r\n" + _MyDisplayTabItem.MyItemInfo.TabToolTip, "Document has Changed", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                if (MessageBox.Show("Save changes to " + _MyDisplayTabItem.Text + "\r\n" + _MyDisplayTabItem.Tooltip, "Document has Changed", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
					return SaveDSO();
				return false;
			}
			return true;
		}
		private bool _IsBeingDeleted = false;
		public bool IsBeingDeleted
		{
			get { return _IsBeingDeleted; }
			set { _IsBeingDeleted = value; }
		}
		/// <summary>
		/// Cleans-up the DSO Framer window
		/// </summary>
		/// <returns></returns>
		public bool CloseDSO()
		{
			return CloseDSO(false);
		}
		/// <summary>
		/// Cleans-up the DSO Framer window
		/// </summary>
		/// <param name="force"></param>
		/// <returns></returns>
		public bool CloseDSO(bool force)
		{
			_MyLog.Debug("CloseDSO");
			bool result = true;
			try
			{
				if (_MyDSOFramer != null)
				{
					_MyDSOFramer.Close();
					Controls.Remove(_MyDSOFramer);
					components.Remove(_MyDSOFramer);
					_MyDSOFramer.Dispose();
					_MyDSOFramer = null;
					_Count--;
				}
			}
			catch (Exception ex)
			{
				if (_MyLog.IsErrorEnabled) _MyLog.Error("SaveDSO - " + this.Name, ex);
				result = false;
			}
			return result;
		}
		/// <summary>
		/// Activates the current DSO Framer window (Word)
		/// </summary>
		public void Activate()
		{
			try
			{
				this._MyDSOFramer.Activate();
				if (_MyCount <= MSWordLimit)
					this._MyDSOFramer.FrameHookPolicy = DSOFramer.dsoFrameHookPolicy.dsoResetNow;
			}
			catch (Exception ex)
			{
				if (_MyLog.IsErrorEnabled) _MyLog.Error("Activate", ex);
			}
		}
		#endregion
		#region DocumentProperties

		private string GetReflectiveProperty(object objectToInspect, string propertyName)
		{
			string returnString = "";
			//To use reflection on an object, you
			// first need to get an instance
			// of that object's type.
			Type objectType = objectToInspect.GetType();
			//After you have the object's type, you can get
			// information on that type. In this case, we're
			// asking the type to tell us all the
			// properties that it contains.
			PropertyInfo[] properties = objectType.GetProperties();
			//You can then use the PropertyInfo array
			// to loop through each property of the type.
			foreach (PropertyInfo property in properties)
			{
				//The interest part of this code
				// is the GetValue method. This method
				// returns the value of the property.
				if(property.Name == propertyName)
					return property.GetValue(objectToInspect, null).ToString();
			}
			return null;
		}
		#endregion
		public override string ToString()
		{
			return string.Format("DSOTabPanel Document {0}", MyDocumentInfo.DocID);
		}
	}
}