522         return self.Controler.GetBufferState()

   522         return self.Controler.GetBufferState()

   523         

   523         

   524     def Undo(self):

   524     def Undo(self):

   525         self.Controler.LoadPrevious()

   525         self.Controler.LoadPrevious()

   526         self.ParentWindow.CloseTabsWithoutModel()

   526         self.ParentWindow.CloseTabsWithoutModel()

   528             

   527             

   529     def Redo(self):

   528     def Redo(self):

   530         self.Controler.LoadNext()

   529         self.Controler.LoadNext()

   531         self.ParentWindow.CloseTabsWithoutModel()

   530         self.ParentWindow.CloseTabsWithoutModel()

   533     

   531     

   534     def HasNoModel(self):

   532     def HasNoModel(self):

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

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

   536         

   534         

   537     def RefreshView(self):

   535     def RefreshView(self):