add code skeleton creation code in OverrideToStringMethod

src/AddIns/Misc/SharpRefactoring/Project/Src/OverrideToStringMethodRefactoring.cs

@@ -2,8 +2,10 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Linq;
 using ICSharpCode.AvalonEdit.Editing;
 using ICSharpCode.AvalonEdit.Snippets;
+using ICSharpCode.NRefactory.Ast;
 using ICSharpCode.SharpDevelop;
 using ICSharpCode.SharpDevelop.Dom;
 using ICSharpCode.SharpDevelop.Dom.Refactoring;
@@ -17,6 +19,14 @@ namespace SharpRefactoring
 	{
 		public void Insert(CompletionContext context, ICompletionItem item)
 		{
+			if (item == null)
+				throw new ArgumentNullException("item");
+			
+			if (!(item is OverrideCompletionItem))
+				throw new ArgumentException("item is not an OverrideCompletionItem");
+			
+			OverrideCompletionItem completionItem = item as OverrideCompletionItem;
+			
 			ITextEditor textEditor = context.Editor;
 			
 			IEditorUIService uiService = textEditor.GetService(typeof(IEditorUIService)) as IEditorUIService;
@@ -31,21 +41,35 @@ namespace SharpRefactoring
 			
 			CodeGenerator generator = parseInfo.CompilationUnit.Language.CodeGenerator;
 			IClass current = parseInfo.CompilationUnit.GetInnermostClass(textEditor.Caret.Line, textEditor.Caret.Column);
+			ClassFinder finder = new ClassFinder(current, textEditor.Caret.Line, textEditor.Caret.Column);
 			
 			if (current == null)
 				return;
 			
-			ITextAnchor anchor = textEditor.Document.CreateAnchor(textEditor.Caret.Offset);
+			ITextAnchor endAnchor = textEditor.Document.CreateAnchor(textEditor.Caret.Offset);
-			anchor.MovementType = AnchorMovementType.AfterInsertion;
+			endAnchor.MovementType = AnchorMovementType.AfterInsertion;
 			
 			ITextAnchor startAnchor = textEditor.Document.CreateAnchor(textEditor.Caret.Offset);
-			anchor.MovementType = AnchorMovementType.BeforeInsertion;
+			startAnchor.MovementType = AnchorMovementType.BeforeInsertion;
+			
+			MethodDeclaration member = (MethodDeclaration)generator.GetOverridingMethod(completionItem.Member, finder);
+			
+			string indent = DocumentUtilitites.GetWhitespaceBefore(textEditor.Document, textEditor.Caret.Offset);
+			string codeForBaseCall = generator.GenerateCode(member.Body.Children.OfType<AbstractNode>().First(), "");
+			string code = generator.GenerateCode(member, indent);
+			int marker = code.IndexOf(codeForBaseCall);
+			
+			textEditor.Document.Insert(startAnchor.Offset, code.Substring(0, marker).TrimStart());
+			
+			ITextAnchor insertionPos = textEditor.Document.CreateAnchor(endAnchor.Offset);
+			insertionPos.MovementType = AnchorMovementType.BeforeInsertion;
 			
 			InsertionContext insertionContext = new InsertionContext(textEditor.GetService(typeof(TextArea)) as TextArea, startAnchor.Offset);
 			
-			AbstractInlineRefactorDialog dialog = new OverrideToStringMethodDialog(insertionContext, textEditor, startAnchor, anchor, current.Fields);
+			AbstractInlineRefactorDialog dialog = new OverrideToStringMethodDialog(insertionContext, textEditor, startAnchor, insertionPos, current.Fields);
+			dialog.Element = uiService.CreateInlineUIElement(insertionPos, dialog);
 			
-			dialog.Element = uiService.CreateInlineUIElement(anchor, dialog);
+			textEditor.Document.InsertNormalized(endAnchor.Offset, Environment.NewLine + code.Substring(marker + codeForBaseCall.Length));
 			
 			insertionContext.RegisterActiveElement(new InlineRefactorSnippetElement(cxt => null, ""), dialog);
 			insertionContext.RaiseInsertionCompleted(EventArgs.Empty);