gtk:action-bar-revealed (object)

object -- a gtk:action-bar widget
revealed -- a boolean whether the action bar shows its contents

The accessor for the revealed slot gets or sets whether the action bar shows its contents. Changing the revealed property will make the action bar reveal (true) or conceal (false) itself via a sliding transition. This does not show or hide the action bar in the visible property sense, so revealing has no effect if the visible property is false.