public MainLayout(@Autowired RSocketBrokerHandlerRegistry handlerRegistry,
                  @Autowired ServiceRoutingSelector serviceRoutingSelector,
                  @Autowired RSocketBrokerManager rSocketBrokerManager,
                  @Autowired DnsResolveService resolveService,
                  @Autowired ConfigurationService configurationService,
                  @Autowired AuthenticationService authenticationService,
                  @Autowired RSocketFilterChain filterChain,
                  @Autowired @Qualifier("notificationProcessor") TopicProcessor<String> notificationProcessor) {
    this.handlerRegistry = handlerRegistry;
    this.serviceRoutingSelector = serviceRoutingSelector;
    this.rSocketBrokerManager = rSocketBrokerManager;
    this.resolveService = resolveService;
    this.configurationService = configurationService;
    this.authenticationService = authenticationService;
    this.filterChain = filterChain;
    this.notificationProcessor = notificationProcessor;
    //init the Layout
    Image logo = new Image("/rsocket-logo.svg", "RSocket Logo");
    logo.setHeight("44px");
    logo.setAlt("RSocket Cluster");
    addToNavbar(new DrawerToggle(), logo);

    final Tabs tabs = new Tabs(dashBoard(), apps(), dns(), appConfig(), services(), serviceTesting(), serviceMesh(), brokers(), filters(), jwt(), system(), faq());
    tabs.setOrientation(Tabs.Orientation.VERTICAL);
    tabs.addSelectedChangeListener(event -> {
        final Tab selectedTab = event.getSelectedTab();
        final Component component = tab2Workspace.get(selectedTab);
        setContent(component);
    });
    addToDrawer(tabs);
    setContent(new Span("click in the menu ;-) , you will see me never again.."));
}
 

private Tab dashBoard() {
    final Span label = new Span("Dashboard");
    final Icon icon = DASHBOARD.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new DashboardView(this.handlerRegistry, this.serviceRoutingSelector, this.rSocketBrokerManager));
    return tab;
}
 

private Tab apps() {
    final Span label = new Span("Apps");
    final Icon icon = BULLETS.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new AppsView(this.handlerRegistry));
    return tab;
}
 

private Tab dns() {
    final Span label = new Span("DNS");
    final Icon icon = RECORDS.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new DNSView(this.resolveService));
    return tab;
}
 

private Tab appConfig() {
    final Span label = new Span("AppConfig");
    final Icon icon = DATABASE.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new AppConfigView(this.configurationService, this.rSocketBrokerManager));
    return tab;
}
 

private Tab services() {
    final Span label = new Span("Services");
    final Icon icon = BULLETS.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new ServicesView(this.handlerRegistry, this.serviceRoutingSelector));
    return tab;
}
 

private Tab serviceMesh() {
    final Span label = new Span("ServiceMesh");
    final Icon icon = CLUSTER.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new ServiceMeshView(this.handlerRegistry));
    return tab;
}
 

private Tab brokers() {
    final Span label = new Span("Brokers");
    final Icon icon = CUBES.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new BrokersView(this.rSocketBrokerManager));
    return tab;
}
 

private Tab system() {
    final Span label = new Span("Server");
    final Icon icon = SERVER.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new SystemView());
    return tab;
}
 

private Tab serviceTesting() {
    final Span label = new Span("Service Testing");
    final Icon icon = TOOLS.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new ServiceTestingView(this.handlerRegistry, this.serviceRoutingSelector));
    return tab;
}
 

private Tab faq() {
    final Span label = new Span("FAQ");
    final Icon icon = QUESTION.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new FAQView());
    return tab;
}
 

private Tab jwt() {
    final Span label = new Span("JWT");
    final Icon icon = PASSWORD.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new JwtGeneratorView(this.authenticationService));
    return tab;
}
 

private Tab filters() {
    final Span label = new Span("RSocket Filters");
    final Icon icon = FILTER.create();
    final Tab tab = new Tab(new HorizontalLayout(icon, label));
    tab2Workspace.put(tab, new RSocketFiltersView(this.filterChain, this.rSocketBrokerManager));
    return tab;
}
 

public View1() {
    VerticalLayout horizontalLayout = new VerticalLayout();
    horizontalLayout.getStyle().set("border", "1px black solid").set("padding", "10px").set("margin", "0px");
    add(horizontalLayout);

    Tab tab1 = new Tab("Tab one");
    Div page1 = new Div();
    page1.setText("Page#1");

    Tab tab2 = new Tab("Tab two");
    Div page2 = new Div();
    page2.setText("Page#2");
    page2.setVisible(false);

    Tab tab3 = new Tab("Tab three");
    Div page3 = new Div();
    page3.setText("Page#3");
    page3.setVisible(false);

    Map<Tab, Component> tabsToPages = new HashMap<>();
    tabsToPages.put(tab1, page1);
    tabsToPages.put(tab2, page2);
    tabsToPages.put(tab3, page3);
    Tabs tabs = new Tabs(tab1, tab2, tab3);
    Div pages = new Div(page1, page2, page3);

    Set<Component> pagesShown = Stream.of(page1)
            .collect(Collectors.toSet());

    tabs.addSelectedChangeListener(event -> {
        pagesShown.forEach(page -> page.setVisible(false));
        pagesShown.clear();
        Component selectedPage = tabsToPages.get(tabs.getSelectedTab());
        selectedPage.setVisible(true);
        pagesShown.add(selectedPage);
    });

    horizontalLayout.add(tabs, pages);

    horizontalLayout.add(new Button("Test", buttonClickEvent -> {
        Checkbox l = null;
        l.getLabel();
    }), new Checkbox("My Checkbox"));
    setMargin(false);
    setPadding(false);
    setSpacing(false);
    setAlignItems(Alignment.STRETCH);
    setFlexGrow(1, horizontalLayout);
    setSizeFull();
}
 

private void addTab(Class<? extends HasComponents> clazz) {
    Tab tab = new Tab(DemoUtils.getViewName(clazz));
    tabs.add(tab);
    tabToView.put(tab, clazz);
    viewToTab.put(clazz, tab);
}