833     

   833     

   834     def Undo(self):

   834     def Undo(self):

   835         if not self.Debug:

   835         if not self.Debug:

   836             self.Controler.LoadPrevious()

   836             self.Controler.LoadPrevious()

   837             self.ParentWindow.CloseTabsWithoutModel()

   837             self.ParentWindow.CloseTabsWithoutModel()

   839             

   838             

   840     def Redo(self):

   839     def Redo(self):

   841         if not self.Debug:

   840         if not self.Debug:

   842             self.Controler.LoadNext()

   841             self.Controler.LoadNext()

   843             self.ParentWindow.CloseTabsWithoutModel()

   842             self.ParentWindow.CloseTabsWithoutModel()

   846     def HasNoModel(self):

   844     def HasNoModel(self):

   847         if not self.Debug:

   845         if not self.Debug:

   848             return self.Controler.GetEditedElement(self.TagName) is None

   846             return self.Controler.GetEditedElement(self.TagName) is None

   849         return False

   847         return False

   850     

   848