efl/src/lib/elementary/efl_ui_model_state.eo

class Efl.Ui.Model_State (Efl.Model_Composite_Boolean)
{
   [[Efl model handling visibility, enable and selected state]]
   implements {
      Efl.Object.constructor;
      Efl.Model.property { set; }
   }
   events {
      enable;
      disable;
      show;
      hide;
      selected;
      unselected;
   }
}