+ self.tree.set_model(store)
+
+ def button_back(self, widget, id=None, number=None):
+
+ """return back"""
+ self.show_list(id)
+
+ # delete not use buttons
+ while self.max_buttons - 1 > number:
+ self.buttons[self.max_buttons-1].set_label(" ")
+ self.hbox.remove(self.buttons[self.max_buttons-1])
+ self.max_buttons = self.max_buttons - 1
+
+ print "button back data= %i " % number