crow ide toolbox, syntax tree depth and generalize node handling accross parser

1 files changed, 0 insertions, 794 deletions

diff --git a/src/GraphicObjects/ScrollingTextBox.cs b/src/GraphicObjects/ScrollingTextBox.cs
deleted file mode 100644
index d3c4276e..00000000
--- a/src/GraphicObjects/ScrollingTextBox.cs
+++ /dev/null
@@ -1,794 +0,0 @@
-//
-// ScrollingTextBox.cs
-//
-// Author:
-//       Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
-//
-// Copyright (c) 2013-2017 Jean-Philippe Bruyère
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-using System;
-using System.Xml.Serialization;
-using System.ComponentModel;
-using System.Collections;
-using Cairo;
-using System.Text;
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-using System.Linq;
-
-namespace Crow
-{
-	/// <summary>
-	/// Scrolling text box optimized for monospace fonts, for coding
-	/// </summary>
-	public class ScrollingTextBox : ScrollingObject
-	{
-		#region CTOR
-		protected ScrollingTextBox ():base()
-		{
-			KeyEventsOverrides = true;
-		}
-		public ScrollingTextBox (Interface iface):base(iface){
-			KeyEventsOverrides = true;
-		}
-		#endregion
-
-		public event EventHandler TextChanged;
-
-		public virtual void OnTextChanged(Object sender, EventArgs e)
-		{
-			TextChanged.Raise (this, e);
-		}
-
-		#region private and protected fields
-		string lineBreak = Interface.LineBreak;
-		int visibleLines = 1;
-		List<string> lines;
-		string _text = "label";
-		Color selBackground;
-		Color selForeground;
-		Point mouseLocalPos = 0;//mouse coord in widget space
-		int _currentCol;        //0 based cursor position in string
-		int _currentLine;
-		Point _selBegin = -1;	//selection start (row,column)
-		Point _selRelease = -1;	//selection end (row,column)
-
-		protected Rectangle rText;
-		protected FontExtents fe;
-		protected TextExtents te;
-		#endregion
-
-		[XmlAttributeAttribute][DefaultValue("label")]
-		public string Text
-		{
-			get {
-				return lines == null ?
-					_text : lines.Aggregate((i, j) => i + Interface.LineBreak + j);
-			}
-			set
-			{
-				if (string.Equals (value, _text, StringComparison.Ordinal))
-					return;
-
-				_text = value;
-
-				if (string.IsNullOrEmpty(_text))
-					_text = "";
-
-				lines = getLines;
-				MaxScrollY = Math.Max (0, lines.Count - visibleLines);
-
-				OnTextChanged (this, null);
-				RegisterForGraphicUpdate ();
-			}
-		}
-
-
-		[XmlAttributeAttribute][DefaultValue("BlueGray")]
-		public virtual Color SelectionBackground {
-			get { return selBackground; }
-			set {
-				if (value == selBackground)
-					return;
-				selBackground = value;
-				NotifyValueChanged ("SelectionBackground", selBackground);
-				RegisterForRedraw ();
-			}
-		}
-		[XmlAttributeAttribute][DefaultValue("White")]
-		public virtual Color SelectionForeground {
-			get { return selForeground; }
-			set {
-				if (value == selForeground)
-					return;
-				selForeground = value;
-				NotifyValueChanged ("SelectionForeground", selForeground);
-				RegisterForRedraw ();
-			}
-		}
-		[XmlAttributeAttribute][DefaultValue(0)]
-		public int CurrentColumn{
-			get { return _currentCol; }
-			set {
-				if (value == _currentCol)
-					return;
-				if (value < 0)
-					_currentCol = 0;
-				else if (value > lines [_currentLine].Length)
-					_currentCol = lines [_currentLine].Length;
-				else
-					_currentCol = value;
-				NotifyValueChanged ("CurrentColumn", _currentCol);
-			}
-		}
-		[XmlAttributeAttribute][DefaultValue(0)]
-		public int CurrentLine{
-			get { return _currentLine; }
-			set {
-				if (value == _currentLine)
-					return;
-				if (value >= lines.Count)
-					_currentLine = lines.Count-1;
-				else if (value < 0)
-					_currentLine = 0;
-				else
-					_currentLine = value;
-				//force recheck of currentCol for bounding
-				int cc = _currentCol;
-				_currentCol = 0;
-				CurrentColumn = cc;
-				NotifyValueChanged ("CurrentLine", _currentLine);
-
-				if (CurrentLine < ScrollY)
-					ScrollY = CurrentLine;
-				else if (CurrentLine >= ScrollY + visibleLines)
-					ScrollY = Math.Max (0, CurrentLine - visibleLines + 1);
-			}
-		}
-		[XmlIgnore]public Point CurrentPosition {
-			get { return new Point(CurrentColumn, CurrentLine); }
-		}
-		//TODO:using HasFocus for drawing selection cause SelBegin and Release binding not to work
-		/// <summary>
-		/// Selection begin position in char units (line, column)
-		/// </summary>
-		[XmlAttributeAttribute][DefaultValue("-1")]
-		public Point SelBegin {
-			get { return _selBegin; }
-			set {
-				if (value == _selBegin)
-					return;
-				_selBegin = value;
-				System.Diagnostics.Debug.WriteLine ("SelBegin=" + _selBegin);
-				NotifyValueChanged ("SelBegin", _selBegin);
-				NotifyValueChanged ("SelectedText", SelectedText);
-			}
-		}
-		/// <summary>
-		/// Selection release position in char units (line, column)
-		/// </summary>
-		[XmlAttributeAttribute][DefaultValue("-1")]
-		public Point SelRelease {
-			get {
-				return _selRelease;
-			}
-			set {
-				if (value == _selRelease)
-					return;
-				_selRelease = value;
-				NotifyValueChanged ("SelRelease", _selRelease);
-				NotifyValueChanged ("SelectedText", SelectedText);
-			}
-		}
-		/// <summary>
-		/// return char at CurrentLine, CurrentColumn
-		/// </summary>
-		[XmlIgnore]protected Char CurrentChar
-		{
-			get {
-				return lines [CurrentLine] [CurrentColumn];
-			}
-		}
-		/// <summary>
-		/// ordered selection start and end positions in char units
-		/// </summary>
-		[XmlIgnore]protected Point selectionStart
-		{
-			get {
-				return SelRelease < 0 || SelBegin.Y < SelRelease.Y ? SelBegin :
-					SelBegin.Y > SelRelease.Y ? SelRelease :
-					SelBegin.X < SelRelease.X ? SelBegin : SelRelease;
-			}
-		}
-		[XmlIgnore]public Point selectionEnd
-		{
-			get {
-				return SelRelease < 0 || SelBegin.Y > SelRelease.Y ? SelBegin :
-					SelBegin.Y < SelRelease.Y ? SelRelease :
-					SelBegin.X > SelRelease.X ? SelBegin : SelRelease;
-			}
-		}
-		[XmlIgnore]public string SelectedText
-		{
-			get {
-
-				if (SelRelease < 0 || SelBegin < 0)
-					return "";
-				if (selectionStart.Y == selectionEnd.Y)
-					return lines [selectionStart.Y].Substring (selectionStart.X, selectionEnd.X - selectionStart.X);
-				string tmp = "";
-				tmp = lines [selectionStart.Y].Substring (selectionStart.X);
-				for (int l = selectionStart.Y + 1; l < selectionEnd.Y; l++) {
-					tmp += Interface.LineBreak + lines [l];
-				}
-				tmp += Interface.LineBreak + lines [selectionEnd.Y].Substring (0, selectionEnd.X);
-				return tmp;
-			}
-		}
-		[XmlIgnore]public bool selectionIsEmpty
-		{ get { return SelRelease == SelBegin; } }
-
-		List<string> getLines {
-			get {
-				return Regex.Split (_text, "\r\n|\r|\n|\\\\n").ToList();
-			}
-		}
-		/// <summary>
-		/// Moves cursor one char to the left.
-		/// </summary>
-		/// <returns><c>true</c> if move succeed</returns>
-		public bool MoveLeft(){
-			int tmp = _currentCol - 1;
-			if (tmp < 0) {
-				if (_currentLine == 0)
-					return false;
-				CurrentLine--;
-				CurrentColumn = int.MaxValue;
-			} else
-				CurrentColumn = tmp;
-			return true;
-		}
-		/// <summary>
-		/// Moves cursor one char to the right.
-		/// </summary>
-		/// <returns><c>true</c> if move succeed</returns>
-		public bool MoveRight(){
-			int tmp = _currentCol + 1;
-			if (tmp > lines [_currentLine].Length){
-				if (CurrentLine == lines.Count - 1)
-					return false;
-				CurrentLine++;
-				CurrentColumn = 0;
-			} else
-				CurrentColumn = tmp;
-			return true;
-		}
-		public void GotoWordStart(){
-			if (lines[CurrentLine].Length == 0)
-				return;
-			CurrentColumn--;
-			//skip white spaces
-			while (!char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn > 0)
-				CurrentColumn--;
-			while (char.IsLetterOrDigit (lines [CurrentLine] [CurrentColumn]) && CurrentColumn > 0)
-				CurrentColumn--;
-			if (!char.IsLetterOrDigit (this.CurrentChar))
-				CurrentColumn++;
-		}
-		public void GotoWordEnd(){
-			//skip white spaces
-			if (CurrentColumn >= lines [CurrentLine].Length - 1)
-				return;
-			while (!char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn < lines [CurrentLine].Length-1)
-				CurrentColumn++;
-			while (char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn < lines [CurrentLine].Length-1)
-				CurrentColumn++;
-			if (char.IsLetterOrDigit (this.CurrentChar))
-				CurrentColumn++;
-		}
-		public void DeleteChar()
-		{
-			if (selectionIsEmpty) {
-				if (CurrentColumn == 0) {
-					if (CurrentLine == 0 && lines.Count == 1)
-						return;
-					CurrentLine--;
-					CurrentColumn = lines [CurrentLine].Length;
-					lines [CurrentLine] += lines [CurrentLine + 1];
-					lines.RemoveAt (CurrentLine + 1);
-					OnTextChanged (this, null);
-					return;
-				}
-				CurrentColumn--;
-				lines [CurrentLine] = lines [CurrentLine].Remove (CurrentColumn, 1);
-			} else {
-				int linesToRemove = selectionEnd.Y - selectionStart.Y + 1;
-				int l = selectionStart.Y;
-
-				if (linesToRemove > 0) {
-					lines [l] = lines [l].Remove (selectionStart.X, lines [l].Length - selectionStart.X) +
-						lines [selectionEnd.Y].Substring (selectionEnd.X, lines [selectionEnd.Y].Length - selectionEnd.X);
-					l++;
-					for (int c = 0; c < linesToRemove-1; c++)
-						lines.RemoveAt (l);
-					CurrentLine = selectionStart.Y;
-					CurrentColumn = selectionStart.X;
-				} else
-					lines [l] = lines [l].Remove (selectionStart.X, selectionEnd.X - selectionStart.X);
-				CurrentColumn = selectionStart.X;
-				SelBegin = -1;
-				SelRelease = -1;
-			}
-			OnTextChanged (this, null);
-		}
-
-		#region GraphicObject overrides
-		public override Font Font {
-			get { return base.Font; }
-			set {
-				base.Font = value;
-
-				using (ImageSurface img = new ImageSurface (Format.Argb32, 1, 1)) {
-					using (Context gr = new Context (img)) {
-						gr.SelectFontFace (Font.Name, Font.Slant, Font.Wheight);
-						gr.SetFontSize (Font.Size);
-
-						fe = gr.FontExtents;
-					}
-				}
-				MaxScrollY = 0;
-				RegisterForGraphicUpdate ();
-			}
-		}
-		protected override int measureRawSize(LayoutingType lt)
-		{
-			if (lt == LayoutingType.Height)
-				return (int)Math.Ceiling(fe.Height * lines.Count) + Margin * 2;
-
-			string txt = _text.Replace("\t", new String (' ', Interface.TabSize));
-
-
-			int maxChar = 0;
-			foreach (string s in Regex.Split (txt, "\r\n|\r|\n|\\\\n")) {
-				if (maxChar < s.Length)
-					maxChar = s.Length;
-			}
-			return (int)(fe.MaxXAdvance * maxChar) + Margin * 2;
-		}
-		public override void OnLayoutChanges (LayoutingType layoutType)
-		{
-			base.OnLayoutChanges (layoutType);
-
-			if (layoutType == LayoutingType.Height)
-				updateVisibleLines ();
-		}
-		protected override void onDraw (Context gr)
-		{
-			base.onDraw (gr);
-
-			gr.SelectFontFace (Font.Name, Font.Slant, Font.Wheight);
-			gr.SetFontSize (Font.Size);
-			gr.FontOptions = Interface.FontRenderingOptions;
-			gr.Antialias = Interface.Antialias;
-
-			Rectangle cb = ClientRectangle;
-
-			Foreground.SetAsSource (gr);
-
-			bool selectionInProgress = false;
-
-			#region draw text cursor
-			if (SelBegin != SelRelease)
-				selectionInProgress = true;
-			else if (HasFocus){
-				gr.SetSourceColor(Color.Red);
-				gr.LineWidth = 2.0;
-				double cursorX = cb.X + (CurrentColumn - ScrollX) * fe.MaxXAdvance;
-				gr.MoveTo (0.5 + cursorX, cb.Y + (CurrentLine - ScrollY) * fe.Height);
-				gr.LineTo (0.5 + cursorX, cb.Y + (CurrentLine + 1 - ScrollY) * fe.Height);
-				gr.Stroke();
-			}
-			#endregion
-
-			Foreground.SetAsSource (gr);
-
-			for (int i = 0; i < visibleLines; i++) {
-				int curL = i + ScrollY;
-				if (curL >= lines.Count)
-					break;
-				string lstr = lines[curL];
-
-				gr.MoveTo (cb.X, cb.Y + fe.Ascent + fe.Height * i);
-				gr.ShowText (lstr);
-				gr.Fill ();
-
-				if (selectionInProgress && curL >= selectionStart.Y && curL <= selectionEnd.Y) {
-
-					double rLineX = cb.X,
-					rLineY = cb.Y + i * fe.Height,
-					rLineW = lstr.Length * fe.MaxXAdvance;
-
-					System.Diagnostics.Debug.WriteLine ("sel start: " + selectionStart + " sel end: " + selectionEnd);
-					if (curL == selectionStart.Y) {
-						rLineX += (selectionStart.X - ScrollX) * fe.MaxXAdvance;
-						rLineW -= selectionStart.X * fe.MaxXAdvance;
-					}
-					if (curL == selectionEnd.Y)
-						rLineW -= (lstr.Length - selectionEnd.X) * fe.MaxXAdvance;
-
-					gr.Save ();
-					gr.Operator = Operator.Source;
-					gr.Rectangle (rLineX, rLineY, rLineW, fe.Height);
-					gr.SetSourceColor (SelectionBackground);
-					gr.FillPreserve ();
-					gr.Clip ();
-					gr.Operator = Operator.Over;
-					gr.SetSourceColor (SelectionForeground);
-					gr.MoveTo (cb.X, cb.Y + fe.Ascent + fe.Height * i);
-					gr.ShowText (lstr);
-					gr.Fill ();
-					gr.Restore ();
-				}
-			}
-		}
-		#endregion
-
-		#region Mouse handling
-		void updatemouseLocalPos(Point mpos){
-			Point mouseLocalPos = mpos - ScreenCoordinates(Slot).TopLeft - ClientRectangle.TopLeft;
-			if (mouseLocalPos.X < 0)
-				CurrentColumn--;
-			else
-				CurrentColumn = ScrollX +  (int)Math.Round (mouseLocalPos.X / fe.MaxXAdvance);
-
-			if (mouseLocalPos.Y < 0)
-				CurrentLine--;
-			else
-				CurrentLine = ScrollY + (int)Math.Floor (mouseLocalPos.Y / fe.Height);
-		}
-		public override void onMouseEnter (object sender, MouseMoveEventArgs e)
-		{
-			base.onMouseEnter (sender, e);
-			IFace.MouseCursor = XCursor.Text;
-		}
-		public override void onMouseLeave (object sender, MouseMoveEventArgs e)
-		{
-			base.onMouseLeave (sender, e);
-			IFace.MouseCursor = XCursor.Default;
-		}
-		protected override void onFocused (object sender, EventArgs e)
-		{
-			base.onFocused (sender, e);
-
-			//			SelBegin = new Point(0,0);
-			//			SelRelease = new Point (lines.LastOrDefault ().Length, lines.Count-1);
-			RegisterForRedraw ();
-		}
-		protected override void onUnfocused (object sender, EventArgs e)
-		{
-			base.onUnfocused (sender, e);
-
-			//			SelBegin = -1;
-			//			SelRelease = -1;
-			RegisterForRedraw ();
-		}
-		public override void onMouseMove (object sender, MouseMoveEventArgs e)
-		{
-			base.onMouseMove (sender, e);
-
-			if (!e.Mouse.IsButtonDown (MouseButton.Left))
-				return;
-			if (!HasFocus || SelBegin < 0)
-				return;
-
-			updatemouseLocalPos (e.Position);
-			SelRelease = CurrentPosition;
-
-			RegisterForRedraw();
-		}
-		public override void onMouseDown (object sender, MouseButtonEventArgs e)
-		{
-			if (this.HasFocus){
-				updatemouseLocalPos (e.Position);
-				SelBegin = SelRelease = CurrentPosition;
-				RegisterForRedraw();//TODO:should put it in properties
-			}
-
-			//done at the end to set 'hasFocus' value after testing it
-			base.onMouseDown (sender, e);
-		}
-		public override void onMouseUp (object sender, MouseButtonEventArgs e)
-		{
-			base.onMouseUp (sender, e);
-
-			if (SelBegin == SelRelease)
-				SelBegin = SelRelease = -1;
-
-			updatemouseLocalPos (e.Position);
-			RegisterForRedraw ();
-		}
-		public override void onMouseDoubleClick (object sender, MouseButtonEventArgs e)
-		{
-			base.onMouseDoubleClick (sender, e);
-
-			GotoWordStart ();
-			SelBegin = CurrentPosition;
-			GotoWordEnd ();
-			SelRelease = CurrentPosition;
-			RegisterForRedraw ();
-		}
-		#endregion
-
-		#region Keyboard handling
-		public override void onKeyDown (object sender, KeyboardKeyEventArgs e)
-		{
-			base.onKeyDown (sender, e);
-
-			Key key = e.Key;
-
-			switch (key)
-			{
-			case Key.Back:
-				if (CurrentPosition == 0)
-					return;
-				this.DeleteChar();
-				break;
-			case Key.Clear:
-				break;
-			case Key.Delete:
-				if (selectionIsEmpty) {
-					if (!MoveRight ())
-						return;
-				}else if (e.Shift)
-					IFace.Clipboard = this.SelectedText;
-				this.DeleteChar ();
-				break;
-			case Key.Enter:
-			case Key.KeypadEnter:
-				if (!selectionIsEmpty)
-					this.DeleteChar ();
-				this.InsertLineBreak ();
-				break;
-			case Key.Escape:
-				Text = "";
-				CurrentColumn = 0;
-				SelRelease = -1;
-				break;
-			case Key.Home:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = new Point (CurrentColumn, CurrentLine);
-					if (e.Control)
-						CurrentLine = 0;
-					CurrentColumn = 0;
-					SelRelease = new Point (CurrentColumn, CurrentLine);
-					break;
-				}
-				SelRelease = -1;
-				if (e.Control)
-					CurrentLine = 0;
-				CurrentColumn = 0;
-				break;
-			case Key.End:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = CurrentPosition;
-					if (e.Control)
-						CurrentLine = int.MaxValue;
-					CurrentColumn = int.MaxValue;
-					SelRelease = CurrentPosition;
-					break;
-				}
-				SelRelease = -1;
-				if (e.Control)
-					CurrentLine = int.MaxValue;
-				CurrentColumn = int.MaxValue;
-				break;
-			case Key.Insert:
-				if (e.Shift)
-					this.Insert (IFace.Clipboard);
-				else if (e.Control && !selectionIsEmpty)
-					IFace.Clipboard = this.SelectedText;
-				break;
-			case Key.Left:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = new Point(CurrentColumn, CurrentLine);
-					if (e.Control)
-						GotoWordStart ();
-					else if (!MoveLeft ())
-						return;
-					SelRelease = CurrentPosition;
-					break;
-				}
-				SelRelease = -1;
-				if (e.Control)
-					GotoWordStart ();
-				else
-					MoveLeft();
-				break;
-			case Key.Right:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = CurrentPosition;
-					if (e.Control)
-						GotoWordEnd ();
-					else if (!MoveRight ())
-						return;
-					SelRelease = CurrentPosition;
-					break;
-				}
-				SelRelease = -1;
-				if (e.Control)
-					GotoWordEnd ();
-				else
-					MoveRight ();
-				break;
-			case Key.Up:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = CurrentPosition;
-					CurrentLine--;
-					SelRelease = CurrentPosition;
-					break;
-				}
-				SelRelease = -1;
-				CurrentLine--;
-				break;
-			case Key.Down:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = CurrentPosition;
-					CurrentLine++;
-					SelRelease = CurrentPosition;
-					break;
-				}
-				SelRelease = -1;
-				CurrentLine++;
-				break;
-			case Key.Menu:
-				break;
-			case Key.NumLock:
-				break;
-			case Key.PageDown:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = CurrentPosition;
-					CurrentLine += visibleLines;
-					SelRelease = CurrentPosition;
-					break;
-				}
-				SelRelease = -1;				
-				CurrentLine += visibleLines;
-				break;
-			case Key.PageUp:
-				if (e.Shift) {
-					if (selectionIsEmpty)
-						SelBegin = CurrentPosition;
-					CurrentLine -= visibleLines;
-					SelRelease = CurrentPosition;
-					break;
-				}				
-				CurrentLine -= visibleLines;
-				break;
-			case Key.RWin:
-				break;
-			case Key.Tab:
-				this.Insert ("\t");
-				break;
-			default:
-				break;
-			}
-			RegisterForGraphicUpdate();
-		}
-		public override void onKeyPress (object sender, KeyPressEventArgs e)
-		{
-			base.onKeyPress (sender, e);
-
-			this.Insert (e.KeyChar.ToString());
-
-			SelRelease = -1;
-			SelBegin = -1; //new Point(CurrentColumn, SelBegin.Y);
-
-			RegisterForGraphicUpdate();
-		}
-		#endregion
-
-
-		/// <summary> Compute x offset in cairo unit from text position </summary>
-		double GetXFromTextPointer(Context gr, Point pos)
-		{
-			try {
-				string l = lines [pos.Y].Substring (0, pos.X).
-					Replace ("\t", new String (' ', Interface.TabSize));
-				return gr.TextExtents (l).XAdvance;
-			} catch{
-				return -1;
-			}
-		}
-
-		/// <summary> line break could be '\r' or '\n' or '\r\n' </summary>
-		string detectLineBreakKind(){
-			string strLB = "";
-
-			if (string.IsNullOrEmpty(_text))
-				return Interface.LineBreak;
-			int i = 0;
-			while ( i < _text.Length) {
-				if (_text [i] == '\r') {
-					strLB += '\r';
-					i++;
-				}
-				if (i < _text.Length) {
-					if (_text [i] == '\r')
-						return "\r";
-					if (_text [i] == '\n')
-						strLB += '\n';
-				}
-				if (!string.IsNullOrEmpty (strLB))
-					return strLB;
-				i++;
-			}
-			return Interface.LineBreak;
-		}
-
-		void updateVisibleLines(){
-			visibleLines = (int)Math.Floor ((double)ClientRectangle.Height / fe.Height);
-			MaxScrollY = Math.Max (0, lines.Count - visibleLines);
-
-			System.Diagnostics.Debug.WriteLine ("update visible lines: " + visibleLines);
-			System.Diagnostics.Debug.WriteLine ("update MaxScrollY: " + MaxScrollY);
-		}
-
-
-		/// <summary>
-		/// Insert new string at caret position, should be sure no line break is inside.
-		/// </summary>
-		/// <param name="str">String.</param>
-		protected void Insert(string str)
-		{
-			if (!selectionIsEmpty)
-				this.DeleteChar ();
-			string[] strLines = Regex.Split (str, "\r\n|\r|\n|" + @"\\n").ToArray();
-			lines [CurrentLine] = lines [CurrentLine].Insert (CurrentColumn, strLines[0]);
-			CurrentColumn += strLines[0].Length;
-			for (int i = 1; i < strLines.Length; i++) {
-				InsertLineBreak ();
-				lines [CurrentLine] = lines [CurrentLine].Insert (CurrentColumn, strLines[i]);
-				CurrentColumn += strLines[i].Length;
-			}
-			OnTextChanged (this, null);
-			RegisterForGraphicUpdate();
-		}
-
-		/// <summary>
-		/// Insert a line break.
-		/// </summary>
-		protected void InsertLineBreak()
-		{
-			lines.Insert(CurrentLine + 1, lines[CurrentLine].Substring(CurrentColumn));
-			lines [CurrentLine] = lines [CurrentLine].Substring (0, CurrentColumn);
-			CurrentLine++;
-			CurrentColumn = 0;
-			OnTextChanged (this, null);
-		}
-	}
-}
\ No newline at end of file