gistfile1.txt

private void setupMenu() {
        final MenuFactory.TopLevelMenusBuilder<MenuFactory.MenuBuilder> builder =  newTopLevelMenu("Home").respondsWith(new Command() {
            @Override
            public void execute() {
                placeManager.goTo(new DefaultPlaceRequest("HomePerspective"));
            }
        }).endMenu();
        
        if (userSystemManager.isActive()) {
            builder.newTopLevelMenu("Users management").respondsWith(new Command() {
                @Override
                public void execute() {
                    placeManager.goTo(new DefaultPlaceRequest("UsersManagementPerspective"));
                }
            }).endMenu().
                    newTopLevelMenu("Groups management")
                    .respondsWith(new Command() {
                        @Override
                        public void execute() {
                            placeManager.goTo(new DefaultPlaceRequest("GroupsManagementPerspective"));
                        }
                    }).endMenu();
            
        } else {
            GWT.log("Users management is NOT ACTIVE.");
        }
        
        final Menus menus = builder.build();

        Menus logoutMenus = MenuFactory.newSimpleItem( "Logout" ).respondsWith( new LogoutCommand() ).endMenu().build();
        menubar.addMenus(menus);
        menubar.addMenus(logoutMenus);
    }