added ChangeMarkerMargin

src/AddIns/DisplayBindings/AvalonEdit.AddIn/AvalonEdit.AddIn.csproj

@@ -82,6 +82,7 @@
     <Compile Include="Src\AvalonEditViewContent.cs" />
     <Compile Include="Src\BracketHighlightRenderer.cs" />
     <Compile Include="Src\CaretReferencesRenderer.cs" />
+    <Compile Include="Src\ChangeMarkerMargin.cs" />
     <Compile Include="Src\ChooseEncodingDialog.xaml.cs">
       <DependentUpon>ChooseEncodingDialog.xaml</DependentUpon>
       <SubType>Code</SubType>

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/ChangeMarkerMargin.cs

@@ -0,0 +1,122 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows;
+using System.Windows.Media;
+using ICSharpCode.AvalonEdit.Document;
+using ICSharpCode.AvalonEdit.Editing;
+using ICSharpCode.AvalonEdit.Rendering;
+using ICSharpCode.SharpDevelop;
+using ICSharpCode.SharpDevelop.Editor;
+
+namespace ICSharpCode.AvalonEdit.AddIn
+{
+	/// <summary>
+	/// Description of ChangeMarkerMargin.
+	/// </summary>
+	public class ChangeMarkerMargin : AbstractMargin, ILineTracker, IDisposable
+	{
+		WeakLineTracker lineTracker;
+		List<DocumentLine> changedLines;
+		List<DocumentLine> lastSavedChangedLines;
+		bool changed;
+		OpenedFile openedFile;
+		
+		public ChangeMarkerMargin()
+		{
+			changedLines = new List<DocumentLine>();
+			lastSavedChangedLines = new List<DocumentLine>();
+			changed = false;
+		}
+		
+		protected override void OnRender(DrawingContext drawingContext)
+		{
+			Size renderSize = this.RenderSize;
+			TextView textView = this.TextView;
+			
+			if (textView != null && textView.VisualLinesValid) {
+				ITextEditor editor = textView.Services.GetService(typeof(ITextEditor)) as ITextEditor;
+				openedFile = FileService.GetOpenedFile(editor.FileName);
+				openedFile.IsDirtyChanged += IsDirtyChanged;
+				textView.ScrollOffsetChanged += ScrollOffsetChanged;
+				
+				if (lineTracker == null)
+					lineTracker = WeakLineTracker.Register(textView.Document, this);
+				
+				foreach (VisualLine line in textView.VisualLines) {
+					Rect rect = new Rect(0, line.VisualTop - textView.ScrollOffset.Y, renderSize.Width, line.Height);
+					if (lastSavedChangedLines.Contains(line.FirstDocumentLine))
+						drawingContext.DrawRectangle(Brushes.LightGreen, null, rect);
+					else if (changedLines.Contains(line.FirstDocumentLine))
+						drawingContext.DrawRectangle(Brushes.Yellow, null, rect);
+				}
+			}
+		}
+
+		void ScrollOffsetChanged(object sender, EventArgs e)
+		{
+			InvalidateVisual();
+		}
+
+		void IsDirtyChanged(object sender, EventArgs e)
+		{
+			if (changed && !openedFile.IsDirty) {
+				lastSavedChangedLines = lastSavedChangedLines.Concat(changedLines).Distinct().ToList();
+				changedLines.Clear();
+				changed = false;
+				InvalidateVisual();
+			}
+		}
+		
+		protected override Size MeasureOverride(Size availableSize)
+		{
+			return new Size(5, 0);
+		}
+		
+		public void BeforeRemoveLine(DocumentLine line)
+		{
+			changedLines.Remove(line);
+			lastSavedChangedLines.Remove(line);
+			changed = true;
+			InvalidateVisual();
+		}
+		
+		public void SetLineLength(DocumentLine line, int newTotalLength)
+		{
+			if (!changedLines.Contains(line))
+				changedLines.Add(line);
+			lastSavedChangedLines.Remove(line);
+			changed = true;
+			InvalidateVisual();
+		}
+		
+		public void LineInserted(DocumentLine insertionPos, DocumentLine newLine)
+		{
+			if (!changedLines.Contains(insertionPos))
+				changedLines.Add(insertionPos);
+			lastSavedChangedLines.Remove(insertionPos);
+			changedLines.Add(newLine);
+			changed = true;
+			InvalidateVisual();
+		}
+		
+		public void RebuildDocument()
+		{
+			InvalidateVisual();
+		}
+		
+		bool disposed = false;
+		
+		public void Dispose()
+		{
+			if (!disposed) {
+				lineTracker.Deregister();
+				openedFile.IsDirtyChanged -= IsDirtyChanged;
+				disposed = true;
+			}
+		}
+	}
+}

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CodeEditor.cs

@@ -199,6 +199,8 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			textView.Services.AddService(typeof(IBookmarkMargin), iconBarManager);
 			codeEditorView.TextArea.LeftMargins.Insert(0, new IconBarMargin(iconBarManager));
 			
+			codeEditorView.TextArea.LeftMargins.Add(new ChangeMarkerMargin());
+			
 			textView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(textView));
 			
 			codeEditorView.TextArea.MouseRightButtonDown += TextAreaMouseRightButtonDown;