CodeCompletion after dot shows only extension methods from imported namespaces. If Ctrl+Space is pressed, all extension methods from all referenced projects are shown.

Original Ctrl+Space (types shown when user starts typing in the editor) still always shows types from all referenced projects. Maybe we could change this to show only items from imported namespaces by default, and all items for Ctrl+Space press, for consistency (ReSharper-like). If we want this, NRefactoryResolver.CtrlSpace() method is ready for this change. I am not sure yet, I quite like current state (all types shown in CC don't bother me), but it is a little inconsistent.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@5845 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

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

@@ -49,6 +49,11 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 	/// </summary>
 	public class CodeCompletionItemProvider : AbstractCompletionItemProvider
 	{
+		/// <summary>
+		/// Gets/Sets whether items from all namespaces should be included in code completion, regardless of imports.
+		/// </summary>
+		public bool ShowItemsFromAllNamespaces { get; set; }
+		
 		/// <inheritdoc/>
 		public override ICompletionItemList GenerateCompletionList(ITextEditor editor)
 		{
@@ -103,7 +108,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 			if (rr == null)
 				return null;
 			IProjectContent callingContent = rr.CallingClass != null ? rr.CallingClass.ProjectContent : null;
-			List<ICompletionEntry> arr = rr.GetCompletionData(callingContent ?? ParserService.CurrentProjectContent);
+			List<ICompletionEntry> arr = rr.GetCompletionData(callingContent ?? ParserService.CurrentProjectContent, this.ShowItemsFromAllNamespaces);
 			return GenerateCompletionListForCompletionData(arr, context);
 		}
 		

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

@@ -27,17 +27,12 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 		
 		ExpressionContext overrideContext;
 		
-		bool allowCompleteExistingExpression;
-		
 		/// <summary>
 		/// Gets/Sets whether completing an old expression is allowed.
 		/// You have to set this property to true to let the provider run FindExpression, when
 		/// set to false it will use ExpressionContext.Default (unless the constructor with "overrideContext" was used).
 		/// </summary>
-		public bool AllowCompleteExistingExpression {
-			get { return allowCompleteExistingExpression; }
-			set { allowCompleteExistingExpression = value; }
-		}
+		public bool AllowCompleteExistingExpression { get; set; }
 		
 		/// <summary>
 		/// Gets/Sets whether code templates should be included in code completion.
@@ -67,7 +62,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 		ICompletionItemList GenerateCompletionListCore(ITextEditor editor)
 		{
 			preselectionLength = 0;
-			if (!allowCompleteExistingExpression) {
+			if (!AllowCompleteExistingExpression) {
 				ExpressionContext context = overrideContext ?? ExpressionContext.Default;
 				var ctrlSpace = CtrlSpace(editor, context);
 				return GenerateCompletionListForCompletionData(ctrlSpace, context);
@@ -128,7 +123,7 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 				editor.Caret.Line, editor.Caret.Column,
 				ParserService.GetParseInformation(editor.FileName),
 				editor.Document.Text,
-				context);
+				context, this.ShowItemsFromAllNamespaces);
 		}
 	}
 }

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

@@ -64,6 +64,8 @@ namespace ICSharpCode.SharpDevelop.Editor.CodeCompletion
 		{
 			NRefactoryCtrlSpaceCompletionItemProvider provider = new NRefactoryCtrlSpaceCompletionItemProvider(languageProperties);
 			provider.AllowCompleteExistingExpression = true;
+			// on Ctrl+Space, include members (e.g. extension methods) from all namespaces, regardless of imports
+			provider.ShowItemsFromAllNamespaces = true;
 			provider.ShowCompletion(editor);
 			return true;
 		}

src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/CtrlSpaceResolveHelper.cs

@@ -235,7 +235,7 @@ namespace ICSharpCode.SharpDevelop.Dom
 			return null;
 		}
 		
-		public static IList<IMethodOrProperty> FindAllExtensions(LanguageProperties language, IClass callingClass)
+		public static IList<IMethodOrProperty> FindAllExtensions(LanguageProperties language, IClass callingClass, bool searchInAllNamespaces = false)
 		{
 			if (language == null)
 				throw new ArgumentNullException("language");
@@ -251,9 +251,12 @@ namespace ICSharpCode.SharpDevelop.Dom
 				IMethod dummyMethod = new DefaultMethod("dummy", callingClass.ProjectContent.SystemTypes.Void,
 				                                        ModifierEnum.Static, DomRegion.Empty, DomRegion.Empty, callingClass);
 				CtrlSpaceResolveHelper.AddContentsFromCalling(list, callingClass, dummyMethod);
-				CtrlSpaceResolveHelper.AddImportedNamespaceContents(list, callingClass.CompilationUnit, callingClass);
-				// search extension methods in all referenced projects, no matter the using section
-				//CtrlSpaceResolveHelper.AddReferencedProjectsContents(list, callingClass.CompilationUnit, callingClass);
+				if (searchInAllNamespaces) {
+					// search extension methods in all referenced projects, no matter the using section
+					CtrlSpaceResolveHelper.AddReferencedProjectsContents(list, callingClass.CompilationUnit, callingClass);
+				} else {
+					CtrlSpaceResolveHelper.AddImportedNamespaceContents(list, callingClass.CompilationUnit, callingClass);
+				}
 				
 				bool searchExtensionsInClasses = language.SearchExtensionsInClasses;
 				foreach (object o in list) {

src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/NRefactoryResolver.cs

@@ -1010,13 +1010,13 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 		ReadOnlyCollection<IMethodOrProperty> cachedExtensionMethods;
 		IClass cachedExtensionMethods_LastClass; // invalidate cache when callingClass != LastClass
 		
-		public ReadOnlyCollection<IMethodOrProperty> SearchAllExtensionMethods()
+		public ReadOnlyCollection<IMethodOrProperty> SearchAllExtensionMethods(bool searchInAllNamespaces = false)
 		{
 			if (callingClass == null)
 				return EmptyList<IMethodOrProperty>.Instance;
 			if (callingClass != cachedExtensionMethods_LastClass) {
 				cachedExtensionMethods_LastClass = callingClass;
-				cachedExtensionMethods = new ReadOnlyCollection<IMethodOrProperty>(CtrlSpaceResolveHelper.FindAllExtensions(languageProperties, callingClass));
+				cachedExtensionMethods = new ReadOnlyCollection<IMethodOrProperty>(CtrlSpaceResolveHelper.FindAllExtensions(languageProperties, callingClass, searchInAllNamespaces));
 			}
 			return cachedExtensionMethods;
 		}
@@ -1122,7 +1122,17 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 			}
 		}
 		
-		public List<ICompletionEntry> CtrlSpace(int caretLine, int caretColumn, ParseInformation parseInfo, string fileContent, ExpressionContext context)
+		/// <summary>
+		/// Returns code completion entries for given context.
+		/// </summary>
+		/// <param name="caretLine"></param>
+		/// <param name="caretColumn"></param>
+		/// <param name="parseInfo"></param>
+		/// <param name="fileContent"></param>
+		/// <param name="context"></param>
+		/// <param name="showEntriesFromAllNamespaces">If true, returns entries from all namespaces, regardless of current imports.</param>
+		/// <returns></returns>
+		public List<ICompletionEntry> CtrlSpace(int caretLine, int caretColumn, ParseInformation parseInfo, string fileContent, ExpressionContext context, bool showEntriesFromAllNamespaces = false)
 		{
 			if (!Initialize(parseInfo, caretLine, caretColumn))
 				return null;
@@ -1231,7 +1241,7 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 			}
 		}
 		
-		void CtrlSpaceInternal(List<ICompletionEntry> result, string fileContent)
+		void CtrlSpaceInternal(List<ICompletionEntry> result, string fileContent, bool showEntriesFromAllNamespaces = true)
 		{
 			lookupTableVisitor = new LookupTableVisitor(language);
 			
@@ -1265,11 +1275,13 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				result.Add(new DefaultField.ParameterField(callingMember.ReturnType, "value", callingMember.Region, callingClass));
 			}
 			
-			// CC contains contents of all imported namespaces
-			//CtrlSpaceResolveHelper.AddImportedNamespaceContents(result, cu, callingClass);	// FindReferences to AddImportedNamespaceContents results in OutOfMemory
-			
-			// CC contains contents of all referenced assemblies
-			CtrlSpaceResolveHelper.AddReferencedProjectsContents(result, cu, callingClass);
+			if (showEntriesFromAllNamespaces) {
+				// CC contains contents of all referenced assemblies
+				CtrlSpaceResolveHelper.AddReferencedProjectsContents(result, cu, callingClass);
+			} else {
+				// CC contains contents of all imported namespaces
+				CtrlSpaceResolveHelper.AddImportedNamespaceContents(result, cu, callingClass);
+			}
 		}
 		
 		sealed class CompareLambdaByLocation : IEqualityComparer<LambdaExpression>

src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/ResolveResult.cs

@@ -78,6 +78,24 @@ namespace ICSharpCode.SharpDevelop.Dom
 			return this.Clone();
 		}
 		
+		bool showAllNamespacesContentsInCC = false;
+		/// <summary>
+		/// Gets code completion data for this ResolveResult.
+		/// </summary>
+		/// <param name="projectContent"></param>
+		/// <param name="showItemsFromAllNamespaces">If true, items (e.g. extension methods) from all namespaces are returned, regardless current imports. Default is false.</param>
+		/// <returns></returns>
+		public List<ICompletionEntry> GetCompletionData(IProjectContent projectContent, bool showItemsFromAllNamespaces)
+		{
+			// Little hack - store value in a property to pass it to GetCompletionData(LanguageProperties language, bool showStatic)
+			// Otherwise we would have to add it as a parameter to GetCompletionData(IProjectContent projectContent),
+			// which would change signature in classes overriding this method as well.
+			this.showAllNamespacesContentsInCC = showItemsFromAllNamespaces;
+			var result = GetCompletionData(projectContent);
+			this.showAllNamespacesContentsInCC = false;
+			return result;
+		}
+		
 		public virtual List<ICompletionEntry> GetCompletionData(IProjectContent projectContent)
 		{
 			return GetCompletionData(projectContent.Language, false);
@@ -94,7 +112,7 @@ namespace ICSharpCode.SharpDevelop.Dom
 			}
 			
 			if (!showStatic && callingClass != null) {
-				AddExtensions(language, res.Add, callingClass, resolvedType);
+				AddExtensions(language, res.Add, callingClass, resolvedType, this.showAllNamespacesContentsInCC);
 			}
 			
 			return res;
@@ -103,7 +121,7 @@ namespace ICSharpCode.SharpDevelop.Dom
 		/// <summary>
 		/// Adds extension methods to <paramref name="res"/>.
 		/// </summary>
-		public static void AddExtensions(LanguageProperties language, Action<IMethodOrProperty> methodFound, IClass callingClass, IReturnType resolvedType)
+		public static void AddExtensions(LanguageProperties language, Action<IMethodOrProperty> methodFound, IClass callingClass, IReturnType resolvedType, bool searchInAllNamespaces = false)
 		{
 			if (language == null)
 				throw new ArgumentNullException("language");
@@ -117,7 +135,7 @@ namespace ICSharpCode.SharpDevelop.Dom
 			// convert resolvedType into direct type to speed up the IsApplicable lookups
 			resolvedType = resolvedType.GetDirectReturnType();
 			
-			foreach (IMethodOrProperty mp in CtrlSpaceResolveHelper.FindAllExtensions(language, callingClass)) {
+			foreach (IMethodOrProperty mp in CtrlSpaceResolveHelper.FindAllExtensions(language, callingClass, searchInAllNamespaces)) {
 				TryAddExtension(language, methodFound, mp, resolvedType);
 			}
 		}