1 files changed, 109 insertions, 0 deletions
diff --git a/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Refactoring/FindDerivedSymbolsHandler.cs b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Refactoring/FindDerivedSymbolsHandler.cs
new file mode 100644
index 0000000000..bfa67762ff
--- /dev/null
+++ b/main/src/addins/CSharpBinding/MonoDevelop.CSharp.Refactoring/FindDerivedSymbolsHandler.cs
@@ -0,0 +1,109 @@
+//
+// FindDerivedSymbolsHandler.cs
+//
+// Author:
+//       Mike Krüger <mkrueger@xamarin.com>
+//
+// Copyright (c) 2013 Xamarin Inc. (http://xamarin.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+using System;
+using MonoDevelop.Ide;
+using MonoDevelop.Ide.FindInFiles;
+using MonoDevelop.Ide.TypeSystem;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using MonoDevelop.Projects;
+using System.Threading;
+using MonoDevelop.Core;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.FindSymbols;
+using ICSharpCode.NRefactory6.CSharp;
+using MonoDevelop.Components.Commands;
+using MonoDevelop.Refactoring;
+
+namespace MonoDevelop.CSharp.Refactoring
+{
+	class FindDerivedSymbolsHandler
+	{
+		public static bool CanFindDerivedSymbols (ISymbol symbol, out string description)
+		{
+			if (symbol.Kind == SymbolKind.NamedType) {
+				var type = (ITypeSymbol)symbol;
+				description = type.TypeKind == TypeKind.Interface ? GettextCatalog.GetString ("Find Implementing Types") : GettextCatalog.GetString ("Find Derived Types");
+				return !type.IsStatic && !type.IsSealed;
+			}
+			if (symbol.ContainingType != null && symbol.ContainingType.TypeKind == TypeKind.Interface) {
+ 				description = GettextCatalog.GetString ("Find Implementing Symbols");
+			} else {
+ 				description = GettextCatalog.GetString ("Find Derived Symbols");
+			}
+			return symbol.IsVirtual || symbol.IsAbstract || symbol.IsOverride;
+		}
+
+		public static void FindDerivedSymbols (ISymbol symbol)
+		{
+			Task.Run (delegate {
+				using (var monitor = IdeApp.Workbench.ProgressMonitors.GetSearchProgressMonitor (true, true)) {
+					IEnumerable<ISymbol> task;
+
+					if (symbol.ContainingType != null && symbol.ContainingType.TypeKind == TypeKind.Interface) {
+						task = SymbolFinder.FindImplementationsAsync (symbol, TypeSystemService.Workspace.CurrentSolution).Result; 
+					} else if (symbol.Kind == SymbolKind.NamedType) {
+						var type = (INamedTypeSymbol)symbol;
+						if (type.TypeKind == TypeKind.Interface) {
+							task = SymbolFinder.FindImplementationsAsync (symbol, TypeSystemService.Workspace.CurrentSolution).Result; 
+						} else {
+							task = type.FindDerivedClassesAsync (TypeSystemService.Workspace.CurrentSolution).Result.Cast<ISymbol> ();
+						}
+					} else {
+						task = SymbolFinder.FindOverridesAsync (symbol, TypeSystemService.Workspace.CurrentSolution).Result;
+					}
+					foreach (var foundSymbol in task) {
+						foreach (var loc in foundSymbol.Locations)
+							monitor.ReportResult (new MemberReference (foundSymbol, loc.SourceTree.FilePath, loc.SourceSpan.Start, loc.SourceSpan.Length));
+					}
+				}
+			});
+		}
+
+		public async void Update (CommandInfo info)
+		{
+			var doc = IdeApp.Workbench.ActiveDocument;
+			if (doc == null || doc.FileName == FilePath.Null || doc.ParsedDocument == null) {
+				info.Enabled = false;
+				return;
+			}
+			var rinfo = await RefactoringSymbolInfo.GetSymbolInfoAsync (doc, doc.Editor.CaretOffset);
+			info.Enabled = rinfo.DeclaredSymbol != null;
+		}
+
+		public async void Run (object data)
+		{
+			var doc = IdeApp.Workbench.ActiveDocument;
+			if (doc == null || doc.FileName == FilePath.Null)
+				return;
+			var info = await RefactoringSymbolInfo.GetSymbolInfoAsync (doc, doc.Editor.CaretOffset);
+			if (info.DeclaredSymbol != null)
+				FindDerivedSymbols (info.DeclaredSymbol);
+		}
+	}
+}
+