[Ide][AtkCocoa] Add support for Subroles and Value objects

Author: sevoku

main/src/core/MonoDevelop.Ide/MonoDevelop.Components.AtkCocoaHelper/AtkCocoaHelper.cs

@@ -154,6 +154,7 @@ public enum Roles
 		public enum SubRoles
 		{
 			AXCloseButton,
+			AXTabButton,
 		};
 
 		public struct Range

main/src/core/MonoDevelop.Ide/MonoDevelop.Components.AtkCocoaHelper/AtkCocoaHelperMac.cs

@@ -213,13 +213,23 @@ public static void SetMainWindow (this Atk.Object o, Atk.Object mainWindow)
 		}
 
 		public static void SetValue (this Atk.Object o, string stringValue)
+		{
+			SetValue (o, (NSObject) new NSString (stringValue));
+		}
+
+		public static void SetValue (this Atk.Object o, object value)
+		{
+			SetValue (o, NSObject.FromObject (value));
+		}
+
+		static void SetValue (this Atk.Object o, NSObject value)
 		{
 			var nsa = GetNSAccessibilityElement (o);
 			if (nsa == null) {
 				return;
 			}
 
-			nsa.AccessibilityValue = new NSString (stringValue);
+			nsa.AccessibilityValue = value;
 		}
 
 		public static void SetUrl (this Atk.Object o, string url)
@@ -261,6 +271,11 @@ public static void SetSubRole (this Atk.Object o, string subrole)
 			nsa.AccessibilitySubrole = subrole;
 		}
 
+		public static void SetSubRole (this Atk.Object o, AtkCocoa.SubRoles subrole)
+		{
+			o.SetSubRole (subrole.ToString ());
+		}
+
 		public static void SetTitleUIElement (this Atk.Object o, Atk.Object title)
 		{
 			var nsa = GetNSAccessibilityElement (o);