Added IHostApplicationWindow.GetCurrentEditor() function

CSharp/Environments/GTK/Engines/UniversalEditor.Environments.GTK/MainWindow.cs

@@ -15,6 +15,11 @@ namespace UniversalEditor.Engines.GTK
 			InitializeMenuBar();
 		}
 		
+		public IEditorImplementation GetCurrentEditor()
+		{
+			return null;
+		}
+		
 		protected override bool OnFocused (DirectionType direction)
 		{
 			Engine.CurrentEngine.LastWindow = this;

CSharp/Libraries/UniversalEditor.UserInterface/IHostApplicationWindow.cs

@@ -29,6 +29,8 @@ namespace UniversalEditor.UserInterface
 
 		void CloseFile();
 		void CloseWindow();
+		
+		IEditorImplementation GetCurrentEditor();
 
         bool FullScreen { get; set; }