implemented SD-631 for VB .NET

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@6329 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/CSharpBinding/Project/Src/CSharpCompletionBinding.cs

@@ -45,8 +45,11 @@ namespace CSharpBinding
 					return true;
 				}*/
 			} else if (ch == ',' && CodeCompletionOptions.InsightRefreshOnComma && CodeCompletionOptions.InsightEnabled) {
-				if (insightHandler.InsightRefreshOnComma(editor, ch))
+				IInsightWindow insightWindow;
+				if (insightHandler.InsightRefreshOnComma(editor, ch, out insightWindow)) {
+					insightHandler.HighlightParameter(insightWindow, -1); // disable highlighting
 					return CodeCompletionKeyPressResult.Completed;
+				}
 			} else if(ch == '=') {
 				var curLine = editor.Document.GetLineForOffset(cursor);
 				string documentText = editor.Document.Text;

src/AddIns/BackendBindings/VBNetBinding/Project/Src/VBNetCompletionBinding.cs

@@ -63,14 +63,24 @@ namespace ICSharpCode.VBNetBinding
 				case '(':
 					if (CodeCompletionOptions.InsightEnabled) {
 						IInsightWindow insightWindow = editor.ShowInsightWindow(new MethodInsightProvider().ProvideInsight(editor));
-						if (insightWindow != null)
+						if (insightWindow != null) {
 							insightHandler.InitializeOpenedInsightWindow(editor, insightWindow);
+							insightHandler.HighlightParameter(insightWindow, 0);
+						}
 						return CodeCompletionKeyPressResult.Completed;
 					}
 					break;
 				case ',':
-					if (CodeCompletionOptions.InsightRefreshOnComma && CodeCompletionOptions.InsightEnabled && insightHandler.InsightRefreshOnComma(editor, ch))
-						return CodeCompletionKeyPressResult.Completed;
+					if (CodeCompletionOptions.InsightRefreshOnComma && CodeCompletionOptions.InsightEnabled) {
+						IInsightWindow insightWindow;
+						editor.Document.Insert(editor.Caret.Offset, ",");
+						if (insightHandler.InsightRefreshOnComma(editor, ch, out insightWindow)) {
+							if (insightWindow != null) {
+								insightHandler.HighlightParameter(insightWindow, GetArgumentIndex(editor) + 1);
+							}
+							return CodeCompletionKeyPressResult.EatKey;
+						}
+					}
 					break;
 				case '\n':
 					TryDeclarationTypeInference(editor, editor.Document.GetLineForOffset(editor.Caret.Offset));
@@ -126,6 +136,21 @@ namespace ICSharpCode.VBNetBinding
 			return CodeCompletionKeyPressResult.None;
 		}
 		
+		static int GetArgumentIndex(ITextEditor editor)
+		{
+			ILexer lexer = ParserFactory.CreateLexer(SupportedLanguage.VBNet, editor.Document.CreateReader());
+			ExpressionFinder ef = new ExpressionFinder();
+			
+			Token t = lexer.NextToken();
+			
+			while (t.Kind != Tokens.EOF && t.EndLocation < editor.Caret.Position) {
+				ef.InformToken(t);
+				t = lexer.NextToken();
+			}
+			
+			return ef.ActiveArgument;
+		}
+		
 		bool IsTypeCharacter(char ch, char prevChar)
 		{
 			ch = char.ToUpperInvariant(ch);

src/Libraries/NRefactory/Project/Src/Lexer/VBNet/ExpressionFinder.atg

@@ -1182,7 +1182,7 @@ InvocationStatement =
 .
 
 ArgumentList =
-   Expression { "," [ Expression ] }
+  (. activeArgument = 0; .) Expression { "," (. activeArgument++; .) [ Expression ] }
 |   "," [ Expression ]  { "," [ Expression ] }
 .
 

src/Libraries/NRefactory/Project/Src/Lexer/VBNet/ExpressionFinder.cs

@@ -129,6 +129,10 @@ namespace ICSharpCode.NRefactory.Parser.VB
 			get { return isMissingModifier; }
 		}
 		
+		public int ActiveArgument {
+			get { return activeArgument; }
+		}
+		
 		public List<Token> Errors {
 			get { return errors; }
 		}

src/Libraries/NRefactory/Project/Src/Lexer/VBNet/Parser.cs

@@ -1440,6 +1440,7 @@ partial class ExpressionFinder {
 	bool identifierExpected = false;
 	bool nextTokenIsStartOfImportsOrAccessExpression = false;
 	bool isMissingModifier = false;
+	int activeArgument = 0;
 	List<Token> errors = new List<Token>();
 	
 	public ExpressionFinder()
@@ -1859,6 +1860,7 @@ partial class ExpressionFinder {
 			case 44: {
 				if (la == null) { currentState = 44; break; }
 				if (set[22].Get(la.kind)) {
+					activeArgument = 0;
 					goto case 418;
 				} else {
 					if (la.kind == 22) {
@@ -5639,6 +5641,7 @@ partial class ExpressionFinder {
 				}
 			}
 			case 420: {
+				activeArgument++;
 				nextTokenIsPotentialStartOfExpression = true;
 				goto case 421;
 			}

src/Libraries/NRefactory/Project/Src/Lexer/VBNet/PushParser.frame

@@ -40,6 +40,7 @@ partial class ExpressionFinder {
 	bool identifierExpected = false;
 	bool nextTokenIsStartOfImportsOrAccessExpression = false;
 	bool isMissingModifier = false;
+	int activeArgument = 0;
 	List<Token> errors = new List<Token>();
 	
 	public ExpressionFinder()

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

@@ -175,8 +175,10 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 				case '(':
 					if (enableMethodInsight && CodeCompletionOptions.InsightEnabled) {
 						IInsightWindow insightWindow = editor.ShowInsightWindow(new MethodInsightProvider().ProvideInsight(editor));
-						if (insightWindow != null)
+						if (insightWindow != null) {
 							insightHandler.InitializeOpenedInsightWindow(editor, insightWindow);
+							insightHandler.HighlightParameter(insightWindow, -1); // disable highlighting
+						}
 						return CodeCompletionKeyPressResult.Completed;
 					}
 					break;

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

@@ -6,22 +6,13 @@
 // </file>
 
 using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-
-using ICSharpCode.NRefactory;
-using ICSharpCode.NRefactory.Parser;
-using ICSharpCode.SharpDevelop.Dom;
-using ICSharpCode.SharpDevelop.Dom.NRefactoryResolver;
-using CSTokens = ICSharpCode.NRefactory.Parser.CSharp.Tokens;
-using VBTokens = ICSharpCode.NRefactory.Parser.VB.Tokens;
 
 namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 {
 	public interface IInsightWindowHandler
 	{
 		void InitializeOpenedInsightWindow(ITextEditor editor, IInsightWindow insightWindow);
-		bool InsightRefreshOnComma(ITextEditor editor, char ch);
+		bool InsightRefreshOnComma(ITextEditor editor, char ch, out IInsightWindow insightWindow);
+		void HighlightParameter(IInsightWindow window, int index);
 	}
 }

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

@@ -5,6 +5,8 @@
 //     <version>$Revision$</version>
 // </file>
 
+using System.Windows.Controls;
+using System.Windows.Documents;
 using ICSharpCode.SharpDevelop.Dom;
 using System;
 
@@ -22,6 +24,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 			if (entity == null)
 				throw new ArgumentNullException("entity");
 			this.entity = entity;
+			this.highlightParameter = -1;
 		}
 		
 		public IEntity Entity {
@@ -31,15 +34,60 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 		string headerText;
 		bool descriptionCreated;
 		string description;
+		int highlightParameter;
+		object fancyHeader;
 		
-		public object Header {
-			get {
-				if (headerText == null) {
-					IAmbience ambience = AmbienceService.GetCurrentAmbience();
-					ambience.ConversionFlags = ConversionFlags.StandardConversionFlags;
-					headerText = ambience.Convert(entity);
+		public int HighlightParameter {
+			get { return highlightParameter; }
+			set {
+				if (highlightParameter != value) {
+					highlightParameter = value;
+					fancyHeader = GenerateHeader();
 				}
+			}
+		}
+		
+		object GenerateHeader()
+		{
+			IAmbience ambience = AmbienceService.GetCurrentAmbience();
+			ambience.ConversionFlags = ConversionFlags.StandardConversionFlags;
+			
+			if (headerText == null) {
+				headerText = ambience.Convert(entity);
+			}
+			
+			if (highlightParameter < 0)
 				return headerText;
+			
+			if (entity is IMethod) {
+				var method = entity as IMethod;
+				string param = "";
+				if (method.Parameters.Count > highlightParameter)
+					param = ambience.Convert(method.Parameters[highlightParameter]);
+				
+				if (!string.IsNullOrEmpty(param)) {
+					string[] parts = headerText.Split(new[] { param }, StringSplitOptions.None);
+					if (parts.Length != 2)
+						return headerText;
+					return new Span() {
+						Inlines = {
+							parts[0],
+							new Bold() { Inlines = { param } },
+							parts[1]
+						}
+					};
+				}
+			}
+			
+			return headerText;
+		}
+		
+		public object Header {
+			get {
+				if (fancyHeader == null)
+					fancyHeader = GenerateHeader();
+				
+				return fancyHeader;
 			}
 		}
 		

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

@@ -124,6 +124,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 							// method as normal - this is required to show the list of
 							// parameters the method expects.
 							m.IsExtensionMethod = false;
+							m.Modifiers ^= ModifierEnum.Static;
 							m.Parameters.RemoveAt(0);
 							methods.Add(m);
 						}

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

@@ -143,7 +143,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 			return rr;
 		}
 
-		public bool InsightRefreshOnComma(ITextEditor editor, char ch)
+		public bool InsightRefreshOnComma(ITextEditor editor, char ch, out IInsightWindow insightWindow)
 		{
 			// Show MethodInsightWindow or IndexerInsightWindow
 			NRefactoryResolver r = new NRefactoryResolver(languageProperties);
@@ -170,7 +170,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 						if (c == '(' || c == '[') {
 							var insightProvider = new MethodInsightProvider { LookupOffset = offset };
 							var insightItems = insightProvider.ProvideInsight(editor);
-							ShowInsight(editor, insightItems, ResolveCallParameters(editor, call), ch);
+							insightWindow = ShowInsight(editor, insightItems, ResolveCallParameters(editor, call), ch);
 							return true;
 						} else {
 							Core.LoggingService.Warn("Expected '(' or '[' at start position");
@@ -178,6 +178,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 					}
 				}
 			}
+			insightWindow = null;
 			return false;
 		}
 
@@ -191,11 +192,11 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 			}
 		}
 
-		void ShowInsight(ITextEditor editor, IList<IInsightItem> insightItems, ICollection<ResolveResult> parameters, char charTyped)
+		IInsightWindow ShowInsight(ITextEditor editor, IList<IInsightItem> insightItems, ICollection<ResolveResult> parameters, char charTyped)
 		{
 			int paramCount = parameters.Count;
 			if (insightItems == null || insightItems.Count == 0)
-				return;
+				return null;
 			bool overloadIsSure;
 			int defaultIndex;
 			if (insightItems.Count == 1) {
@@ -226,6 +227,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 					ProvideContextCompletion(editor, param.ReturnType, charTyped);
 				}
 			}
+			return insightWindow;
 		}
 
 		// TODO : remove this code duplication!
@@ -274,5 +276,13 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 				return base.ProcessInput(key);
 			}
 		}
+		
+		public void HighlightParameter(IInsightWindow window, int index)
+		{
+			var item = window.SelectedItem as MethodInsightItem;
+			
+			if (item != null)
+				item.HighlightParameter = index;
+		}
 	}
 }