Make planning box works as Listbox when filter the portal types.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15857 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/SelectionTool.py

@@ -1450,8 +1450,13 @@ def makeTreeList(here, form, root_dict, report_path, base_category,
       if hasattr(aq_base(root), 'objectValues'):
         # If this is a folder, try to browse the hierarchy
         object_list = root.searchFolder(sort_on=sort_on)
-    else:
-      object_list = list_method(portal_type=filtered_portal_types)
+    else: 
+      if filtered_portal_types not in [[],None,'']:
+        object_list = list_method(portal_type=filtered_portal_types)
+      else:
+        object_list = list_method()
+      if len(object_list) == 0:
+        object_list = [root]
     for zo in object_list:
       o = zo.getObject()
       if o is not None: