Allow caller to tweak edit behaviour for data coming from listboxes.

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_edit.xml

@@ -121,7 +121,10 @@ def editListBox(listbox_field, listbox):\n
       for key, value in cleaned_v.items():\n
         if value == \'\':\n
           cleaned_v[key] = None\n
-      context.restrictedTraverse(url).edit(edit_order=edit_order, **cleaned_v)\n
+      if listbox_edit is None:\n
+        context.restrictedTraverse(url).edit(edit_order=edit_order, **cleaned_v)\n
+      else:\n
+        listbox_edit(url, edit_order, cleaned_v)\n
 \n
 def editMatrixBox(matrixbox_field, matrixbox):\n
   """ Function called to edit a Matrix box\n
@@ -328,7 +331,7 @@ return result\n
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>form_id, selection_index=0, selection_name=\'\', dialog_id=\'\', ignore_layout=0, editable_mode=1, silent_mode=0, field_prefix=\'my_\', key_prefix=None</string> </value>
+            <value> <string>form_id, selection_index=0, selection_name=\'\', dialog_id=\'\', ignore_layout=0, editable_mode=1, silent_mode=0, field_prefix=\'my_\', key_prefix=None, listbox_edit=None</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>