code: def reset(self):
          
          self.filename = None
          self.groups = []
  
          self.tabs.clear()
  
          self.setEnabled(False)
          self.button_color.setEnabled(False)
          self.button_del.setEnabled(False)
          self.button_apply.setEnabled(False)
          self.action['load_channels'].setEnabled(False)
          self.action['save_channels'].setEnabled(False)
docs: Reset all the information of this widget.