def on_item_activated(self, evt=None):
if self.lstItems.curselection():
index = self.lstItems.curselection()[0]
self.obj = unit.Dialog(self, self.engine, index)
self.obj.on_open(self.selected_item, )
else:
messagebox.showwarning(self.engine.title, self.engine.no_selected)
def on_add(self, evt):
self.obj = unit.Dialog(self, self.engine)
self.obj.on_open()