Add getListMethodName on Listboxes.

Fix code indention.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@8879 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/ListBox.py

@@ -2897,6 +2897,16 @@ class ListBox(ZMIField):
     else:
       return ZMIField.get_value(self, id, **kw)
 
+  security.declareProtected('Access contents information', 'getListMethodName')
+  def getListMethodName(self):
+    """Return the name of the list method. If not defined, return None.
+    """
+    list_method = self.get_value('list_method')
+    try:
+      name = getattr(list_method, 'method_name')
+    except AttributeError:
+      name = list_method
+    return name or None
 
 
 class ListBoxLine: