Add bookmark markers (red/yellow).

Debugger/ILSpy.Debugger/AvalonEdit/ITextMarker.cs

@@ -0,0 +1,126 @@
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+// 
+// 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.Collections.Generic;
+using System.Windows.Media;
+
+namespace ILSpy.Debugger.AvalonEdit
+{
+	/// <summary>
+	/// Represents a text marker.
+	/// </summary>
+	public interface ITextMarker
+	{
+		/// <summary>
+		/// Gets the start offset of the marked text region.
+		/// </summary>
+		int StartOffset { get; }
+		
+		/// <summary>
+		/// Gets the end offset of the marked text region.
+		/// </summary>
+		int EndOffset { get; }
+		
+		/// <summary>
+		/// Gets the length of the marked region.
+		/// </summary>
+		int Length { get; }
+		
+		/// <summary>
+		/// Deletes the text marker.
+		/// </summary>
+		void Delete();
+		
+		/// <summary>
+		/// Gets whether the text marker was deleted.
+		/// </summary>
+		bool IsDeleted { get; }
+		
+		/// <summary>
+		/// Event that occurs when the text marker is deleted.
+		/// </summary>
+		event EventHandler Deleted;
+		
+		/// <summary>
+		/// Gets/Sets the background color.
+		/// </summary>
+		Color? BackgroundColor { get; set; }
+		
+		/// <summary>
+		/// Gets/Sets the foreground color.
+		/// </summary>
+		Color? ForegroundColor { get; set; }
+		
+		/// <summary>
+		/// Gets/Sets the type of the marker. Use TextMarkerType.None for normal markers.
+		/// </summary>
+		TextMarkerType MarkerType { get; set; }
+		
+		/// <summary>
+		/// Gets/Sets the color of the marker.
+		/// </summary>
+		Color MarkerColor { get; set; }
+		
+		/// <summary>
+		/// Gets/Sets an object with additional data for this text marker.
+		/// </summary>
+		object Tag { get; set; }
+		
+		/// <summary>
+		/// Gets/Sets an object that will be displayed as tooltip in the text editor.
+		/// </summary>
+		object ToolTip { get; set; }
+	}
+	
+	public enum TextMarkerType
+	{
+		/// <summary>
+		/// Use no marker
+		/// </summary>
+		None,
+		/// <summary>
+		/// Use squiggly underline marker
+		/// </summary>
+		SquigglyUnderline
+	}
+	
+	public interface ITextMarkerService
+	{
+		/// <summary>
+		/// Creates a new text marker. The text marker will be invisible at first,
+		/// you need to set one of the Color properties to make it visible.
+		/// </summary>
+		ITextMarker Create(int startOffset, int length);
+		
+		/// <summary>
+		/// Gets the list of text markers.
+		/// </summary>
+		IEnumerable<ITextMarker> TextMarkers { get; }
+		
+		/// <summary>
+		/// Removes the specified text marker.
+		/// </summary>
+		void Remove(ITextMarker marker);
+		
+		/// <summary>
+		/// Removes all text markers that match the condition.
+		/// </summary>
+		void RemoveAll(Predicate<ITextMarker> predicate);
+	}
+}

Debugger/ILSpy.Debugger/AvalonEdit/IconBarMargin.cs

@@ -81,7 +81,7 @@ namespace ILSpy.Debugger.AvalonEdit
 				foreach (var bm in BookmarkManager.Bookmarks) {
 					if (CurrentType == null || bm.TypeName != CurrentType.FullName)
 						continue;
-					if (bm is BreakpointBookmark && 
+					if (bm is BreakpointBookmark &&
 					    ((BreakpointBookmark)bm).Language != DebuggerService.CurrentDebugger.Language)
 						continue;
 					
@@ -219,7 +219,7 @@ namespace ILSpy.Debugger.AvalonEdit
 				b.LineNumber == GetLineFromMousePosition(e)
 				&& b is BreakpointBookmark) as BreakpointBookmark;
 			
-			this.ToolTip = (bm != null) ? bm.Tooltip : null;			
+			this.ToolTip = (bm != null) ? bm.Tooltip : null;
 		}
 		
 		protected override void OnMouseUp(MouseButtonEventArgs e)
@@ -263,7 +263,7 @@ namespace ILSpy.Debugger.AvalonEdit
 						
 						// no bookmark on the line: create a new breakpoint
 						DebuggerService.ToggleBreakpointAt(
-							CurrentType.FullName, 
+							CurrentType.FullName,
 							line,
 							DebuggerService.CurrentDebugger.Language);
 					}

Debugger/ILSpy.Debugger/AvalonEdit/TextMarkerService.cs

@@ -0,0 +1,309 @@
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+// 
+// 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.Collections.Generic;
+using System.Linq;
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Threading;
+
+using ICSharpCode.AvalonEdit;
+using ICSharpCode.AvalonEdit.Document;
+using ICSharpCode.AvalonEdit.Rendering;
+using ILSpy.Debugger.Bookmarks;
+
+namespace ILSpy.Debugger.AvalonEdit
+{
+	/// <summary>
+	/// Handles the text markers for a code editor.
+	/// </summary>
+	public sealed class TextMarkerService : DocumentColorizingTransformer, IBackgroundRenderer, ITextMarkerService
+	{
+		readonly TextEditor codeEditor;
+		TextSegmentCollection<TextMarker> markers = new TextSegmentCollection<TextMarker>();
+		
+		public TextMarkerService(TextEditor codeEditor)
+		{
+			if (codeEditor == null)
+				throw new ArgumentNullException("codeEditor");
+			this.codeEditor = codeEditor;
+			
+			BookmarkManager.Added += new BookmarkEventHandler(BookmarkManager_Added);
+			BookmarkManager.Removed += new BookmarkEventHandler(BookmarkManager_Removed);
+		}
+
+		void BookmarkManager_Removed(object sender, BookmarkEventArgs e)
+		{
+			if (e.Bookmark is MarkerBookmark) {
+				var bm = (MarkerBookmark)e.Bookmark;
+				Remove(bm.Marker);
+			}
+		}
+
+		void BookmarkManager_Added(object sender, BookmarkEventArgs e)
+		{
+			if (e.Bookmark is MarkerBookmark) {
+				var bm = (MarkerBookmark)e.Bookmark;
+				DocumentLine line = codeEditor.Document.GetLineByNumber(bm.LineNumber);
+				bm.Marker = bm.CreateMarker(this, line.Offset, line.Length);
+			}
+		}
+		
+		#region ITextMarkerService
+		public ITextMarker Create(int startOffset, int length)
+		{
+			int textLength = codeEditor.TextArea.TextView.Document.TextLength;
+			if (startOffset < 0 || startOffset > textLength)
+				throw new ArgumentOutOfRangeException("startOffset", startOffset, "Value must be between 0 and " + textLength);
+			if (length < 0 || startOffset + length > textLength)
+				throw new ArgumentOutOfRangeException("length", length, "length must not be negative and startOffset+length must not be after the end of the document");
+			
+			TextMarker m = new TextMarker(this, startOffset, length);
+			markers.Add(m);
+			// no need to mark segment for redraw: the text marker is invisible until a property is set
+			return m;
+		}
+		
+		public IEnumerable<ITextMarker> GetMarkersAtOffset(int offset)
+		{
+			return markers.FindSegmentsContaining(offset);
+		}
+		
+		public IEnumerable<ITextMarker> TextMarkers {
+			get { return markers; }
+		}
+		
+		public void RemoveAll(Predicate<ITextMarker> predicate)
+		{
+			if (predicate == null)
+				throw new ArgumentNullException("predicate");
+			foreach (TextMarker m in markers.ToArray()) {
+				if (predicate(m))
+					Remove(m);
+			}
+		}
+		
+		public void Remove(ITextMarker marker)
+		{
+			if (marker == null)
+				throw new ArgumentNullException("marker");
+			TextMarker m = marker as TextMarker;
+			if (markers.Remove(m)) {
+				Redraw(m);
+				m.OnDeleted();
+			}
+		}
+		
+		/// <summary>
+		/// Redraws the specified text segment.
+		/// </summary>
+		public void Redraw(ISegment segment)
+		{
+			codeEditor.TextArea.TextView.Redraw(segment, DispatcherPriority.Normal);
+		}
+		#endregion
+		
+		#region DocumentColorizingTransformer
+		protected override void ColorizeLine(DocumentLine line)
+		{
+			if (markers == null)
+				return;
+			int lineStart = line.Offset;
+			int lineEnd = lineStart + line.Length;
+			foreach (TextMarker marker in markers.FindOverlappingSegments(lineStart, line.Length)) {
+				Brush foregroundBrush = null;
+				if (marker.ForegroundColor != null) {
+					foregroundBrush = new SolidColorBrush(marker.ForegroundColor.Value);
+					foregroundBrush.Freeze();
+				}
+				ChangeLinePart(
+					Math.Max(marker.StartOffset, lineStart),
+					Math.Min(marker.EndOffset, lineEnd),
+					element => {
+						if (foregroundBrush != null) {
+							element.TextRunProperties.SetForegroundBrush(foregroundBrush);
+						}
+					}
+				);
+			}
+		}
+		#endregion
+		
+		#region IBackgroundRenderer
+		public KnownLayer Layer {
+			get {
+				// draw behind selection
+				return KnownLayer.Selection;
+			}
+		}
+		
+		public void Draw(TextView textView, DrawingContext drawingContext)
+		{
+			if (textView == null)
+				throw new ArgumentNullException("textView");
+			if (drawingContext == null)
+				throw new ArgumentNullException("drawingContext");
+			if (markers == null || !textView.VisualLinesValid)
+				return;
+			var visualLines = textView.VisualLines;
+			if (visualLines.Count == 0)
+				return;
+			int viewStart = visualLines.First().FirstDocumentLine.Offset;
+			int viewEnd = visualLines.Last().LastDocumentLine.Offset + visualLines.Last().LastDocumentLine.Length;
+			foreach (TextMarker marker in markers.FindOverlappingSegments(viewStart, viewEnd - viewStart)) {
+				if (marker.BackgroundColor != null) {
+					BackgroundGeometryBuilder geoBuilder = new BackgroundGeometryBuilder();
+					geoBuilder.AlignToWholePixels = true;
+					geoBuilder.CornerRadius = 3;
+					geoBuilder.AddSegment(textView, marker);
+					Geometry geometry = geoBuilder.CreateGeometry();
+					if (geometry != null) {
+						Color color = marker.BackgroundColor.Value;
+						SolidColorBrush brush = new SolidColorBrush(color);
+						brush.Freeze();
+						drawingContext.DrawGeometry(brush, null, geometry);
+					}
+				}
+				if (marker.MarkerType != TextMarkerType.None) {
+					foreach (Rect r in BackgroundGeometryBuilder.GetRectsForSegment(textView, marker)) {
+						Point startPoint = r.BottomLeft;
+						Point endPoint = r.BottomRight;
+						
+						Pen usedPen = new Pen(new SolidColorBrush(marker.MarkerColor), 1);
+						usedPen.Freeze();
+						switch (marker.MarkerType) {
+							case TextMarkerType.SquigglyUnderline:
+								double offset = 2.5;
+								
+								int count = Math.Max((int)((endPoint.X - startPoint.X) / offset) + 1, 4);
+								
+								StreamGeometry geometry = new StreamGeometry();
+								
+								using (StreamGeometryContext ctx = geometry.Open()) {
+									ctx.BeginFigure(startPoint, false, false);
+									ctx.PolyLineTo(CreatePoints(startPoint, endPoint, offset, count).ToArray(), true, false);
+								}
+								
+								geometry.Freeze();
+								
+								drawingContext.DrawGeometry(Brushes.Transparent, usedPen, geometry);
+								break;
+						}
+					}
+				}
+			}
+		}
+		
+		IEnumerable<Point> CreatePoints(Point start, Point end, double offset, int count)
+		{
+			for (int i = 0; i < count; i++)
+				yield return new Point(start.X + i * offset, start.Y - ((i + 1) % 2 == 0 ? offset : 0));
+		}
+		#endregion
+	}
+	
+	sealed class TextMarker : TextSegment, ITextMarker
+	{
+		readonly TextMarkerService service;
+		
+		public TextMarker(TextMarkerService service, int startOffset, int length)
+		{
+			if (service == null)
+				throw new ArgumentNullException("service");
+			this.service = service;
+			this.StartOffset = startOffset;
+			this.Length = length;
+			this.markerType = TextMarkerType.None;
+		}
+		
+		public event EventHandler Deleted;
+		
+		public bool IsDeleted {
+			get { return !this.IsConnectedToCollection; }
+		}
+		
+		public void Delete()
+		{
+			service.Remove(this);
+		}
+		
+		internal void OnDeleted()
+		{
+			if (Deleted != null)
+				Deleted(this, EventArgs.Empty);
+		}
+		
+		void Redraw()
+		{
+			service.Redraw(this);
+		}
+		
+		Color? backgroundColor;
+		
+		public Color? BackgroundColor {
+			get { return backgroundColor; }
+			set {
+				if (backgroundColor != value) {
+					backgroundColor = value;
+					Redraw();
+				}
+			}
+		}
+		
+		Color? foregroundColor;
+		
+		public Color? ForegroundColor {
+			get { return foregroundColor; }
+			set {
+				if (foregroundColor != value) {
+					foregroundColor = value;
+					Redraw();
+				}
+			}
+		}
+		
+		public object Tag { get; set; }
+		
+		TextMarkerType markerType;
+		
+		public TextMarkerType MarkerType {
+			get { return markerType; }
+			set {
+				if (markerType != value) {
+					markerType = value;
+					Redraw();
+				}
+			}
+		}
+		
+		Color markerColor;
+		
+		public Color MarkerColor {
+			get { return markerColor; }
+			set {
+				if (markerColor != value) {
+					markerColor = value;
+					Redraw();
+				}
+			}
+		}
+		
+		public object ToolTip { get; set; }
+	}
+}

Debugger/ILSpy.Debugger/Bookmarks/BreakpointBookmark.cs

@@ -18,8 +18,10 @@
 
 using System;
 using System.Windows.Media;
+using ICSharpCode.AvalonEdit.Document;
 using ICSharpCode.Decompiler;
 using ICSharpCode.NRefactory.CSharp;
+using ILSpy.Debugger.AvalonEdit;
 using ILSpy.Debugger.Services;
 
 namespace ILSpy.Debugger.Bookmarks
@@ -31,7 +33,7 @@ namespace ILSpy.Debugger.Bookmarks
 		Condition
 	}
 	
-	public class BreakpointBookmark : BookmarkBase
+	public class BreakpointBookmark : MarkerBookmark
 	{
 		bool isHealthy = true;
 		bool isEnabled = true;
@@ -97,5 +99,13 @@ namespace ILSpy.Debugger.Bookmarks
 				return ImageService.Breakpoint;
 			}
 		}
+		
+		public override ITextMarker CreateMarker(ITextMarkerService markerService, int offset, int length)
+		{
+			ITextMarker marker = markerService.Create(offset, length);
+			marker.BackgroundColor = Color.FromRgb(180, 38, 38);
+			marker.ForegroundColor = Colors.White;
+			return marker;
+		}
 	}
 }

Debugger/ILSpy.Debugger/Bookmarks/CurrentLineBookmark.cs

@@ -1,15 +1,31 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
-// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+// 
+// 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.Windows.Media;
 using ICSharpCode.NRefactory.CSharp;
+using ILSpy.Debugger.AvalonEdit;
 using ILSpy.Debugger.Services;
 using Mono.CSharp;
 
 namespace ILSpy.Debugger.Bookmarks
 {
-	public class CurrentLineBookmark : BookmarkBase
+	public class CurrentLineBookmark : MarkerBookmark
 	{
 		static CurrentLineBookmark instance;
 		
@@ -73,5 +89,13 @@ namespace ILSpy.Debugger.Bookmarks
 //					DebuggerService.CurrentDebugger.SetInstructionPointer(this.FileName, lineNumber, 1);
 //				});
 		}
+		
+		public override ITextMarker CreateMarker(ITextMarkerService markerService, int offset, int length)
+		{
+			ITextMarker marker = markerService.Create(offset + startColumn - 1, Math.Max(endColumn - startColumn, 1));
+			marker.BackgroundColor = Colors.Yellow;
+			marker.ForegroundColor = Colors.Blue;
+			return marker;
+		}
 	}
 }

Debugger/ILSpy.Debugger/Bookmarks/MarkerBookmark.cs

@@ -0,0 +1,38 @@
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+// 
+// 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 ICSharpCode.NRefactory.CSharp;
+using ILSpy.Debugger.AvalonEdit;
+
+namespace ILSpy.Debugger.Bookmarks
+{
+	/// <summary>
+	/// Description of MarkerBookmark.
+	/// </summary>
+	public abstract class MarkerBookmark : BookmarkBase
+	{
+		public MarkerBookmark(string typeName, AstLocation location) : base(typeName, location)
+		{
+		}
+		
+		public ITextMarker Marker { get; set; }
+		
+		public abstract ITextMarker CreateMarker(ITextMarkerService markerService, int offset, int length);
+	}
+}

Debugger/ILSpy.Debugger/ILSpy.Debugger.csproj

@@ -52,9 +52,11 @@
     <Reference Include="WindowsBase" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="AvalonEdit\ITextMarker.cs" />
     <Compile Include="AvalonEdit\TextEditorWeakEventManager.cs" />
     <Compile Include="AvalonEdit\IconBarMargin.cs" />
     <Compile Include="AvalonEdit\IToolTip.cs" />
+    <Compile Include="AvalonEdit\TextMarkerService.cs" />
     <Compile Include="Bookmarks\BookmarkBase.cs" />
     <Compile Include="Bookmarks\BookmarkEventHandler.cs" />
     <Compile Include="Bookmarks\BookmarkManager.cs" />
@@ -62,6 +64,7 @@
     <Compile Include="Bookmarks\BreakpointBookmarkEventArgs.cs" />
     <Compile Include="Bookmarks\CurrentLineBookmark.cs" />
     <Compile Include="Bookmarks\IBookmark.cs" />
+    <Compile Include="Bookmarks\MarkerBookmark.cs" />
     <Compile Include="Models\TreeModel\ArrayRangeNode.cs" />
     <Compile Include="Models\TreeModel\ChildNodesOfObject.cs" />
     <Compile Include="Models\TreeModel\ExpressionNode.cs" />

ILSpy/TextView/DecompilerTextView.cs

@@ -63,6 +63,7 @@ namespace ICSharpCode.ILSpy.TextView
 		CancellationTokenSource currentCancellationTokenSource;
 		
 		IconBarMargin iconMargin;
+		TextMarkerService textMarkerService;
 		
 		#region Constructor
 		public DecompilerTextView()
@@ -86,7 +87,11 @@ namespace ICSharpCode.ILSpy.TextView
 			textEditor.TextArea.TextView.MouseHover += TextViewMouseHover;
 			textEditor.TextArea.TextView.MouseHoverStopped += TextViewMouseHoverStopped;
 			
-			// add margin
+			// add marker service & margin
+			textMarkerService = new TextMarkerService(textEditor);
+			textEditor.TextArea.TextView.BackgroundRenderers.Add(textMarkerService);
+			textEditor.TextArea.TextView.LineTransformers.Add(textMarkerService);
+			
 			iconMargin = new IconBarMargin();
 			textEditor.TextArea.LeftMargins.Add(iconMargin);