Merge pull request #22 from yellowisher/improve/force_nesting

Force nesting when there is any sub menu in AddTypeMenu attribute.

Author: mackysoft

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/AdvancedTypePopup.cs

@@ -44,6 +44,11 @@ public static void AddTo (AdvancedDropdownItem root,IEnumerable<Type> types) {
 				if (splittedTypePath.Length <= 1) {
 					continue;
 				}
+				// If they explicitly want sub category, let them do.
+				if (TypeMenuUtility.GetAttribute(type) != null) {
+					isSingleNamespace = false;
+					break;
+				}
 				for (int k = 0;(splittedTypePath.Length - 1) > k;k++) {
 					string ns = namespaces[k];
 					if (ns == null) {
@@ -54,6 +59,10 @@ public static void AddTo (AdvancedDropdownItem root,IEnumerable<Type> types) {
 						break;
 					}
 				}
+
+				if (!isSingleNamespace) {
+					break;
+				}
 			}
 
 			// Add type items.