More work on context actions.

src/AddIns/BackendBindings/CSharpBinding/Project/Src/Refactoring/SDScript.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using CSharpBinding.Parser;
 using ICSharpCode.AvalonEdit.Document;
 using ICSharpCode.NRefactory;
 using ICSharpCode.NRefactory.CSharp;
@@ -10,6 +11,7 @@ using ICSharpCode.NRefactory.CSharp.Refactoring;
 using ICSharpCode.NRefactory.Editor;
 using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.SharpDevelop.Editor;
+using ICSharpCode.SharpDevelop.Parser;
 
 namespace CSharpBinding.Refactoring
 {
@@ -20,33 +22,32 @@ namespace CSharpBinding.Refactoring
 	{
 		int indentationSize = 4;
 		readonly ITextEditor editor;
-		readonly TextSegmentCollection<TextSegment> textSegmentCollection = new TextSegmentCollection<TextSegment>();
-		readonly OffsetChangeMap offsetChangeMap = new OffsetChangeMap();
-		readonly List<Action> actions = new List<Action>();
+		readonly IDocument originalDocument;
+		readonly TextSegmentCollection<TextSegment> textSegmentCollection;
+		readonly IDisposable undoGroup;
 		
 		public SDScript(ITextEditor editor, string eolMarker) : base(eolMarker, new CSharpFormattingOptions())
 		{
 			this.editor = editor;
+			this.textSegmentCollection = new TextSegmentCollection<TextSegment>((TextDocument)editor.Document);
+			this.originalDocument = editor.Document.CreateDocumentSnapshot();
+			undoGroup = editor.Document.OpenUndoGroup();
 		}
 		
 		public override int GetCurrentOffset(TextLocation originalDocumentLocation)
 		{
-			int offset = editor.Document.GetOffset(originalDocumentLocation);
-			return offsetChangeMap.GetNewOffset(offset, AnchorMovementType.Default);
+			int offset = originalDocument.GetOffset(originalDocumentLocation);
+			return GetCurrentOffset(offset);
 		}
 		
 		public override int GetCurrentOffset(int originalDocumentOffset)
 		{
-			return offsetChangeMap.GetNewOffset(originalDocumentOffset, AnchorMovementType.Default);
+			return originalDocument.Version.MoveOffsetTo(editor.Document.Version, originalDocumentOffset, AnchorMovementType.Default);
 		}
 		
 		public override void Replace(int offset, int length, string newText)
 		{
-			var changeMapEntry = new OffsetChangeMapEntry(offset, length, newText.Length);
-			textSegmentCollection.UpdateOffsets(changeMapEntry);
-			offsetChangeMap.Add(changeMapEntry);
-			
-			actions.Add(delegate { editor.Document.Replace(offset, length, newText); });
+			editor.Document.Replace(offset, length, newText);
 		}
 		
 		protected override ISegment CreateTrackedSegment(int offset, int length)
@@ -60,7 +61,7 @@ namespace CSharpBinding.Refactoring
 		
 		protected override int GetIndentLevelAt(int offset)
 		{
-			int oldOffset = offsetChangeMap.Invert().GetNewOffset(offset, AnchorMovementType.Default);
+			int oldOffset = editor.Document.Version.MoveOffsetTo(originalDocument.Version, offset, AnchorMovementType.Default);
 			var line = editor.Document.GetLineByOffset(oldOffset);
 			int spaces = 0;
 			int indentationLevel = 0;
@@ -84,29 +85,53 @@ namespace CSharpBinding.Refactoring
 		
 		public override void Rename(IEntity entity, string name)
 		{
+			// TODO
 		}
 		
 		public override void InsertWithCursor(string operation, AstNode node, InsertPosition defaultPosition)
 		{
+			// TODO
 		}
 		
 		public override void FormatText(int offset, int length)
 		{
+			var parseInfo = ParserService.Parse(editor.FileName, editor.Document) as CSharpFullParseInformation;
+			if (parseInfo != null) {
+				//var startLocation = editor.Document.GetLocation(offset);
+				//var endLocation = editor.Document.GetLocation(offset + length);
+				//var node = parseInfo.CompilationUnit.GetNodeContaining(startLocation, endLocation);
+				var formatter = new AstFormattingVisitor(new CSharpFormattingOptions(), editor.Document, false, 4);
+				parseInfo.CompilationUnit.AcceptVisitor(formatter);
+				formatter.ApplyChanges(offset, length);
+			}
+		}
+		
+		public override void Select(AstNode node)
+		{
+			var segment = GetSegment(node);
+			int startOffset = segment.Offset;
+			int endOffset = segment.EndOffset;
+			// If the area to select includes a newline (e.g. node is a statement),
+			// exclude that newline from the selection.
+			if (endOffset > startOffset && editor.Document.GetLineByOffset(endOffset).Offset == endOffset) {
+				endOffset = editor.Document.GetLineByOffset(endOffset).PreviousLine.EndOffset;
+			}
+			editor.Select(startOffset, endOffset - startOffset);
 		}
 		
 		public override void Select(int offset, int length)
 		{
-			actions.Add(delegate { editor.Select(offset, length); });
+			editor.Select(offset, length);
 		}
 		
 		public override void Link(params AstNode[] nodes)
 		{
+			// TODO
 		}
 		
 		public override void Dispose()
 		{
-			foreach (var action in actions)
-				action();
+			undoGroup.Dispose();
 		}
 	}
 }

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

@@ -67,7 +67,6 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		public void Dispose()
 		{
 			WorkbenchSingleton.Workbench.ActiveViewContentChanged -= WorkbenchSingleton_Workbench_ActiveViewContentChanged;
-			delayMoveTimer.Stop();
 			ClosePopup();
 		}
 		
@@ -75,8 +74,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		{
 			if (this.popup == null)
 				return;
-			if (e.Key == Key.T && Keyboard.Modifiers == ModifierKeys.Control)
-			{
+			if (e.Key == Key.T && Keyboard.Modifiers == ModifierKeys.Control) {
 				if (popup.ViewModel != null && popup.ViewModel.Actions != null && popup.ViewModel.Actions.Count > 0) {
 					popup.IsDropdownOpen = true;
 					popup.Focus();
@@ -87,18 +85,20 @@ namespace ICSharpCode.AvalonEdit.AddIn
 					this.cancellationTokenSourceForPopupBeingOpened = new CancellationTokenSource();
 					var cancellationToken = cancellationTokenSourceForPopupBeingOpened.Token;
 					try {
-						await Task.WhenAll(popupVM.LoadActionsAsync(cancellationToken), popupVM.LoadHiddenActionsAsync(cancellationToken));
+						await popupVM.LoadActionsAsync(cancellationToken);
+						if (popupVM.Actions.Count == 0)
+							await popupVM.LoadHiddenActionsAsync(cancellationToken);
 					} catch (OperationCanceledException) {
 						return;
 					}
 					if (cancellationToken.IsCancellationRequested)
 						return;
 					this.cancellationTokenSourceForPopupBeingOpened = null;
-					if (popupVM.HiddenActions.Count == 0)
+					if (popupVM.Actions.Count == 0 && popupVM.HiddenActions.Count == 0)
 						return;
 					this.popup.ViewModel = popupVM;
 					this.popup.IsDropdownOpen = true;
-					this.popup.IsHiddenActionsExpanded = true;
+					this.popup.IsHiddenActionsExpanded = popupVM.Actions.Count == 0;
 					this.popup.OpenAtLineStart(this.Editor);
 					this.popup.Focus();
 				}
@@ -107,17 +107,18 @@ namespace ICSharpCode.AvalonEdit.AddIn
 
 		void ScrollChanged(object sender, EventArgs e)
 		{
-			ClosePopup();
+			StartTimer();
 		}
 		
 		CancellationTokenSource cancellationTokenSourceForPopupBeingOpened;
 		
 		async void TimerMoveTick(object sender, EventArgs e)
 		{
-			this.delayMoveTimer.Stop();
-			if (!IsEnabled)
+			if (!delayMoveTimer.IsEnabled)
 				return;
 			ClosePopup();
+			if (!IsEnabled)
+				return;
 			
 			ContextActionsBulbViewModel popupVM = BuildPopupViewModel(this.Editor);
 			this.cancellationTokenSourceForPopupBeingOpened = new CancellationTokenSource();
@@ -144,10 +145,16 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		}
 
 		void CaretPositionChanged(object sender, EventArgs e)
+		{
+			StartTimer();
+		}
+		
+		void StartTimer()
 		{
 			ClosePopup();
-			this.delayMoveTimer.Stop();
-			this.delayMoveTimer.Start();
+			IViewContent activeViewContent = WorkbenchSingleton.Workbench.ActiveViewContent;
+			if (activeViewContent != null && activeViewContent.PrimaryFileName == this.Editor.FileName)
+				delayMoveTimer.Start();
 		}
 		
 		void ClosePopup()
@@ -158,6 +165,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 				cancellationTokenSourceForPopupBeingOpened = null;
 			}
 			
+			this.delayMoveTimer.Stop();
 			this.popup.Close();
 			this.popup.IsDropdownOpen = false;
 			this.popup.IsHiddenActionsExpanded = false;
@@ -166,11 +174,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		void WorkbenchSingleton_Workbench_ActiveViewContentChanged(object sender, EventArgs e)
 		{
 			// open the popup again if in current file
-			IViewContent activeViewContent = WorkbenchSingleton.Workbench.ActiveViewContent;
-			if (activeViewContent != null && activeViewContent.PrimaryFileName == this.Editor.FileName)
-				CaretPositionChanged(this, EventArgs.Empty);
-			else // otherwise close popup
-				ClosePopup();
+			StartTimer();
 		}
 	}
 }

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/Caret.cs

@@ -167,7 +167,14 @@ namespace ICSharpCode.AvalonEdit.Editing
 		{
 			InvalidateVisualColumn();
 			if (storedCaretOffset >= 0) {
-				int newCaretOffset = e.GetNewOffset(storedCaretOffset, AnchorMovementType.Default);
+				// If the caret is at the end of a selection, we don't expand the selection if something
+				// is inserted at the end. Thus we also need to keep the caret in front of the insertion.
+				AnchorMovementType caretMovementType;
+				if (!textArea.Selection.IsEmpty && storedCaretOffset == textArea.Selection.SurroundingSegment.EndOffset)
+					caretMovementType = AnchorMovementType.BeforeInsertion;
+				else
+					caretMovementType = AnchorMovementType.Default;
+				int newCaretOffset = e.GetNewOffset(storedCaretOffset, caretMovementType);
 				TextDocument document = textArea.Document;
 				if (document != null) {
 					// keep visual column

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/SimpleSelection.cs

@@ -89,10 +89,18 @@ namespace ICSharpCode.AvalonEdit.Editing
 		{
 			if (e == null)
 				throw new ArgumentNullException("e");
+			int newStartOffset, newEndOffset;
+			if (startOffset <= endOffset) {
+				newStartOffset = e.GetNewOffset(startOffset, AnchorMovementType.Default);
+				newEndOffset = Math.Max(newStartOffset, e.GetNewOffset(endOffset, AnchorMovementType.BeforeInsertion));
+			} else {
+				newEndOffset = e.GetNewOffset(endOffset, AnchorMovementType.Default);
+				newStartOffset = Math.Max(newEndOffset, e.GetNewOffset(startOffset, AnchorMovementType.BeforeInsertion));
+			}
 			return Selection.Create(
 				textArea,
-				new TextViewPosition(textArea.Document.GetLocation(e.GetNewOffset(startOffset, AnchorMovementType.Default)), start.VisualColumn),
-				new TextViewPosition(textArea.Document.GetLocation(e.GetNewOffset(endOffset, AnchorMovementType.Default)), end.VisualColumn)
+				new TextViewPosition(textArea.Document.GetLocation(newStartOffset), start.VisualColumn),
+				new TextViewPosition(textArea.Document.GetLocation(newEndOffset), end.VisualColumn)
 			);
 		}
 		

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/Ast/AstNode.cs

@@ -169,6 +169,13 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public Role Role {
 			get { return role; }
+			set {
+				if (value == null)
+					throw new ArgumentNullException("value");
+				if (!value.IsValid(this))
+					throw new ArgumentException("This node is not valid in the new role.");
+				role = value;
+			}
 		}
 		
 		public AstNode NextSibling {
@@ -350,7 +357,6 @@ namespace ICSharpCode.NRefactory.CSharp
 					parent.lastChild = prevSibling;
 				}
 				parent = null;
-				role = Roles.Root;
 				prevSibling = null;
 				nextSibling = null;
 			}
@@ -408,7 +414,6 @@ namespace ICSharpCode.NRefactory.CSharp
 				parent = null;
 				prevSibling = null;
 				nextSibling = null;
-				role = Roles.Root;
 			}
 		}
 		
@@ -450,7 +455,6 @@ namespace ICSharpCode.NRefactory.CSharp
 			AstNode copy = (AstNode)MemberwiseClone ();
 			// First, reset the shallow pointer copies
 			copy.parent = null;
-			copy.role = Roles.Root;
 			copy.firstChild = null;
 			copy.lastChild = null;
 			copy.prevSibling = null;
@@ -590,6 +594,18 @@ namespace ICSharpCode.NRefactory.CSharp
 			return result;
 		}
 		
+		/// <summary>
+		/// Gets the node that fully contains the range from startLocation to endLocation.
+		/// </summary>
+		public AstNode GetNodeContaining(TextLocation startLocation, TextLocation endLocation)
+		{
+			for (AstNode child = firstChild; child != null; child = child.nextSibling) {
+				if (child.StartLocation <= startLocation && endLocation <= child.EndLocation)
+					return child.GetNodeContaining(startLocation, endLocation);
+			}
+			return this;
+		}
+		
 		public IEnumerable<AstNode> GetNodesBetween (int startLine, int startColumn, int endLine, int endColumn)
 		{
 			return GetNodesBetween (new TextLocation (startLine, startColumn), new TextLocation (endLine, endColumn));

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/Formatter/AstFormattingVisitor.cs

@@ -24,6 +24,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 using System;
+using System.Diagnostics;
 using System.Text;
 using System.Collections.Generic;
 using System.Linq;
@@ -35,10 +36,23 @@ namespace ICSharpCode.NRefactory.CSharp
 {
 	public class AstFormattingVisitor : DepthFirstAstVisitor<object, object>
 	{
+		struct TextReplaceAction
+		{
+			internal readonly int Offset;
+			internal readonly int RemovalLength;
+			internal readonly string NewText;
+			
+			public TextReplaceAction(int offset, int removalLength, string newText)
+			{
+				this.Offset = offset;
+				this.RemovalLength = removalLength;
+				this.NewText = newText;
+			}
+		}
+		
 		CSharpFormattingOptions policy;
 		IDocument document;
-		Script script;
-		//List<TextReplaceAction> changes = new List<TextReplaceAction> ();
+		List<TextReplaceAction> changes = new List<TextReplaceAction> ();
 		Indent curIndent = new Indent ();
 
 		public int IndentLevel {
@@ -67,23 +81,71 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public string EolMarker { get; set; }
 
-		public AstFormattingVisitor (CSharpFormattingOptions policy, IDocument document, Script script, bool tabsToSpaces = false, int indentationSize = 4)
+		public AstFormattingVisitor (CSharpFormattingOptions policy, IDocument document, bool tabsToSpaces = false, int indentationSize = 4)
 		{
 			if (policy == null)
 				throw new ArgumentNullException("policy");
 			if (document == null)
 				throw new ArgumentNullException("document");
-			if (script == null)
-				throw new ArgumentNullException("script");
 			this.policy = policy;
 			this.document = document;
-			this.script = script;
 			this.curIndent.TabsToSpaces = tabsToSpaces;
 			this.curIndent.TabSize = indentationSize;
 			this.EolMarker = Environment.NewLine;
 			CorrectBlankLines = true;
 		}
 		
+		/// <summary>
+		/// Applies the changes to the input document.
+		/// </summary>
+		public void ApplyChanges()
+		{
+			ApplyChanges(0, document.TextLength, document.Replace);
+		}
+		
+		public void ApplyChanges(int startOffset, int length)
+		{
+			ApplyChanges(startOffset, length, document.Replace);
+		}
+		
+		/// <summary>
+		/// Applies the changes to the given Script instance.
+		/// </summary>
+		public void ApplyChanges(Script script)
+		{
+			ApplyChanges(0, document.TextLength, script.Replace);
+		}
+		
+		public void ApplyChanges(int startOffset, int length, Script script)
+		{
+			ApplyChanges(startOffset, length, script.Replace);
+		}
+		
+		void ApplyChanges(int startOffset, int length, Action<int, int, string> documentReplace)
+		{
+			int endOffset = startOffset + length;
+			int lastChangeEnd = 0;
+			int delta = 0;
+			foreach (var change in changes.OrderBy(c => c.Offset)) {
+				if (change.Offset < lastChangeEnd) {
+					Debug.Fail("Detected overlapping change");
+					continue;
+				}
+				lastChangeEnd = change.Offset + change.RemovalLength;
+				if (change.Offset < startOffset) {
+					// skip all changes in front of the begin offset
+					continue;
+				} else if (change.Offset > endOffset) {
+					// skip this change unless it depends on one that we already applied
+					continue;
+				}
+				
+				documentReplace(change.Offset + delta, change.RemovalLength, change.NewText);
+				delta += change.NewText.Length - change.RemovalLength;
+			}
+			changes.Clear();
+		}
+
 		public override object VisitCompilationUnit (CompilationUnit unit, object data)
 		{
 			base.VisitCompilationUnit (unit, data);
@@ -971,35 +1033,7 @@ namespace ICSharpCode.NRefactory.CSharp
 
 		void AddChange (int offset, int removedChars, string insertedText)
 		{
-			script.Replace(offset, removedChars, insertedText);
-//			if (changes.Any (c => c.Offset == offset && c.RemovedChars == removedChars 
-//				&& c.InsertedText == insertedText))
-//				return;
-//			string currentText = document.GetText (offset, removedChars);
-//			if (currentText == insertedText)
-//				return;
-//			if (currentText.Any (c => !(char.IsWhiteSpace (c) || c == '\r' || c == '\t' || c == '{' || c == '}')))
-//				throw new InvalidOperationException ("Tried to remove non ws chars: '" + currentText + "'");
-//			foreach (var change in changes) {
-//				if (change.Offset == offset) {
-//					if (removedChars > 0 && insertedText == change.InsertedText) {
-//						change.RemovedChars = removedChars;
-////						change.InsertedText = insertedText;
-//						return;
-//					}
-//					if (!string.IsNullOrEmpty (change.InsertedText)) {
-//						change.InsertedText += insertedText;
-//					} else {
-//						change.InsertedText = insertedText;
-//					}
-//					change.RemovedChars = System.Math.Max (removedChars, change.RemovedChars);
-//					return;
-//				}
-//			}
-//			//Console.WriteLine ("offset={0}, removedChars={1}, insertedText={2}", offset, removedChars, insertedText == null ? "<null>" : insertedText.Replace ("\n", "\\n").Replace ("\r", "\\r").Replace ("\t", "\\t").Replace (" ", "."));
-//			//Console.WriteLine (Environment.StackTrace);
-//			
-//			changes.Add (factory.CreateTextReplaceAction (offset, removedChars, insertedText));
+			changes.Add(new TextReplaceAction(offset, removedChars, insertedText));
 		}
 
 		public bool IsLineIsEmptyUpToEol (TextLocation startLocation)

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/OutputVisitor/CSharpOutputVisitor.cs

@@ -1510,7 +1510,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				else if (blockStatement.Parent.Role == CustomEventDeclaration.RemoveAccessorRole)
 					style = policy.EventRemoveBraceStyle;
 				else
-					throw new NotSupportedException ("Unknown type of accessor");
+					style = policy.StatementBraceStyle;
 			} else {
 				style = policy.StatementBraceStyle;
 			}

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/Refactoring/ContextAction/AddAnotherAccessor.cs

@@ -52,7 +52,7 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 				Body = new BlockStatement { accessorStatement }
 			};
 			
-			pdecl.AddChild (accessor, pdecl.Setter.IsNull ? PropertyDeclaration.SetterRole : PropertyDeclaration.GetterRole);
+			accessor.Role = pdecl.Setter.IsNull ? PropertyDeclaration.SetterRole : PropertyDeclaration.GetterRole;
 			
 			using (var script = context.StartScript ()) {
 				script.InsertBefore (pdecl.RBraceToken, accessor);

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/Refactoring/ContextAction/CreateBackingStore.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // CreateBackingStore.cs
 //
 // Author:
@@ -53,13 +53,17 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			
 			// create new property & implement the get/set bodies
 			var newProperty = (PropertyDeclaration)property.Clone ();
-			var id1 = new IdentifierExpression (backingStoreName);
-			var id2 = new IdentifierExpression (backingStoreName);
+			Expression id1;
+			if (backingStoreName == "value")
+				id1 = new ThisReferenceExpression().Member("value");
+			else
+				id1 = new IdentifierExpression (backingStoreName);
+			Expression id2 = id1.Clone();
 			newProperty.Getter.Body = new BlockStatement () {
 				new ReturnStatement (id1)
 			};
 			newProperty.Setter.Body = new BlockStatement () {
-				new ExpressionStatement (new AssignmentExpression (id2, AssignmentOperatorType.Assign, new IdentifierExpression ("value")))
+				new AssignmentExpression (id2, AssignmentOperatorType.Assign, new IdentifierExpression ("value"))
 			};
 			
 			using (var script = context.StartScript ()) {

src/Libraries/NRefactory/ICSharpCode.NRefactory.CSharp/Refactoring/Script.cs

@@ -178,15 +178,33 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			output.RegisterTrackedSegments(this, startOffset);
 		}
 		
-		public void FormatText (AstNode node)
+		public virtual void FormatText (AstNode node)
 		{
 			var segment = GetSegment(node);
 			FormatText(segment.Offset, segment.Length);
 		}
 		
+		/// <summary>
+		/// Format the specified node and surrounding whitespace.
+		/// </summary>
+		public virtual void FormatTextAround (AstNode node)
+		{
+			int startOffset;
+			if (node.PrevSibling != null)
+				startOffset = GetSegment(node.PrevSibling).EndOffset;
+			else
+				startOffset = GetSegment(node).Offset;
+			int endOffset;
+			if (node.NextSibling != null)
+				endOffset = GetSegment(node.NextSibling).Offset;
+			else
+				endOffset = GetSegment(node).EndOffset;
+			FormatText(startOffset, endOffset - startOffset);
+		}
+		
 		public abstract void FormatText (int offset, int length);
 		
-		public void Select (AstNode node)
+		public virtual void Select (AstNode node)
 		{
 			var segment = GetSegment(node);
 			Select(segment.Offset, segment.Length);

src/Libraries/NRefactory/ICSharpCode.NRefactory/Editor/ReadOnlyDocument.cs

@@ -220,8 +220,9 @@ namespace ICSharpCode.NRefactory.Editor
 			get { return lines.Length; }
 		}
 		
-		ITextSourceVersion ITextSource.Version {
-			get { return null; }
+		/// <inheritdoc/>
+		public ITextSourceVersion Version {
+			get { return textSource.Version; }
 		}
 		
 		/// <inheritdoc/>

src/Main/Base/Project/Src/Services/RefactoringService/ContextActions/ContextActionsBulbViewModel.cs

@@ -39,16 +39,26 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 			this.ActionVisibleChangedCommand = new ActionVisibleChangedCommand(model);
 		}
 		
+		bool actionsLoaded;
+		
 		public async Task LoadActionsAsync(CancellationToken cancellationToken)
 		{
+			if (actionsLoaded)
+				return;
+			actionsLoaded = true;
 			this.Actions.Clear();
 			foreach (var action in await Model.GetVisibleActionsAsync(cancellationToken)) {
 				this.Actions.Add(new ContextActionViewModel(action, this.Model.EditorContext) { IsVisible = true });
 			}
 		}
 		
+		bool hiddenActionsLoaded;
+		
 		public async Task LoadHiddenActionsAsync(CancellationToken cancellationToken)
 		{
+			if (hiddenActionsLoaded)
+				return;
+			hiddenActionsLoaded = true;
 			this.HiddenActions.Clear();
 			foreach (var action in await Model.GetHiddenActionsAsync(cancellationToken)) {
 				this.HiddenActions.Add(new ContextActionViewModel(action, this.Model.EditorContext) { IsVisible = false });