Gtk.CellArea.prototype.focus

function focus(direction:Gtk.DirectionType):Boolean {
    // Gjs wrapper for gtk_cell_area_focus()
}

This should be called by the area's owning layout widget when focus is to be passed to area, or moved within area for a given direction and row data.

Implementing Gtk.CellArea classes should implement this method to receive and navigate focus in its own way particular to how it lays out cells.

Since 3.0