question: public static boolean hasVisibleChildren ( ActionGroup group , PresentationFactory factory , ActionManager actionManager , PerspectiveManager perspectiveManager ) { ActionEvent event = new ActionEvent ( factory . getPresentation ( group ) , actionManager , perspectiveManager ) ; for ( Action anAction : group . getChildren ( event ) ) { if ( anAction == null ) { Log . error ( Utils . class , "Null action found in group " + group + ", " + factory . getPresentation ( group ) ) ; continue ; } if ( anAction instanceof Separator ) { continue ; } final Presentation presentation = factory . getPresentation ( anAction ) ; anAction . update ( new ActionEvent ( presentation , actionManager , perspectiveManager ) ) ; if ( anAction instanceof ActionGroup ) { ActionGroup childGroup = ( ActionGroup ) anAction ; if ( childGroup . isPopup ( ) ) { if ( ! presentation . isVisible ( ) ) { continue ; } } if ( hasVisibleChildren ( childGroup , factory , actionManager , perspectiveManager ) ) { return true ; } } else if ( presentation . isVisible ( ) ) { return true ; } } return false ; }
target:  Returns true if action group has visible children.