Is it possible to get the state of the Overview Map?

Is it possible to get the state of the Overview Map? I need to know whether the widget is open or closed but it is returning a state of null.

Also, is there a way to programmatically open the Overview Map Widget like other widgets?
I've tried this with no luck:
AppEvent.dispatch(AppEvent.WIDGET_RUN, overviewMapWidgetId);

Thanks!