added ICompletionItemHandler

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@5560 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

SharpDevelop.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 11.00
 # Visual Studio 2010
-# SharpDevelop 4.0.0.5498
+# SharpDevelop 4.0.0.5490
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Main", "Main", "{256F5C28-532C-44C0-8AB8-D8EC5E492E01}"
 	ProjectSection(SolutionItems) = postProject
 	EndProjectSection

src/Main/Base/Project/ICSharpCode.SharpDevelop.csproj

@@ -74,6 +74,7 @@
     <Compile Include="Src\Editor\AvalonEdit\AvalonEditTextEditorAdapter.cs" />
     <Compile Include="Src\Editor\AvalonEdit\AvalonEditTextSourceAdapter.cs" />
     <Compile Include="Src\Editor\AvalonEdit\IndentationStrategyAdapter.cs" />
+    <Compile Include="Src\Editor\CodeCompletion\ICompletionItemHandler.cs" />
     <Compile Include="Src\Editor\IEditorUIService.cs" />
     <Compile Include="Src\Editor\CodeCompletion\AttributesItemProvider.cs" />
     <Compile Include="Src\Editor\CodeCompletion\CodeCompletionBinding.cs" />

src/Main/Base/Project/Src/Editor/CodeCompletion/ICompletionItemHandler.cs

@@ -0,0 +1,17 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Siegfried Pammer" email="siegfriedpammer@gmail.com" />
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+
+namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
+{
+	public interface ICompletionItemHandler
+	{
+		void Insert(CompletionContext context);
+		bool Handles(ICompletionItem item);
+	}
+}

src/Main/Base/Project/Src/Editor/CodeCompletion/OverrideCompletionItem.cs

@@ -6,6 +6,8 @@
 // </file>
 
 using System;
+using System.Collections.Generic;
+using ICSharpCode.Core;
 using ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor;
 using ICSharpCode.SharpDevelop.Dom;
 using ICSharpCode.SharpDevelop.Dom.Refactoring;
@@ -18,6 +20,8 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 		string text;
 		IImage image;
 		
+		static readonly List<ICompletionItemHandler> handlers = AddInTree.BuildItems<ICompletionItemHandler>("/SharpDevelop/ViewContent/TextEditor/OverrideCompletionHandler", null, false);
+		
 		public OverrideCompletionItem(IMember member)
 		{
 			if (member == null)
@@ -67,13 +71,25 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 					return;
 				}
 			}
+			
 			string indentation = lineText.Substring(0, lineText.Length - lineText.TrimStart().Length);
+
+			editor.Document.Remove(line.Offset, caretPosition - line.Offset);
+			
+			foreach (ICompletionItemHandler handler in handlers) {
+				if (handler.Handles(this)) {
+					editor.Document.Insert(line.Offset, indentation);
+					handler.Insert(context);
+					return;
+				}
+			}
 			
 			CodeGenerator codeGen = ParserService.CurrentProjectContent.Language.CodeGenerator;
 			
 			string text = codeGen.GenerateCode(codeGen.GetOverridingMethod(member, classFinder), indentation);
 			text = text.TrimEnd(); // remove newline from end
-			editor.Document.Replace(line.Offset, caretPosition - line.Offset, text);
+			
+			editor.Document.Insert(line.Offset, text);
 			
 			int endPos = line.Offset + text.Length;
 			line = editor.Document.GetLineForOffset(endPos);