private void setupNavigator() {
navigator = new Navigator(DemoUI.getCurrent(), content);
registerViews();
// Add view change listeners so we can do things like select the correct menu item and update
// the page title
navigator.addViewChangeListener(navBar);
navigator.addViewChangeListener(new PageTitleUpdater());
navigator.navigateTo(navigator.getState());
}
public MainView() {
Navigator navigator = new Navigator(UI.getCurrent(), scroll_panel);
navigator.addView(DashboardView.VIEW_NAME, DashboardView.class);
navigator.addView(OrderView.VIEW_NAME, OrderView.class);
navigator.addView(AboutView.VIEW_NAME, AboutView.class);
if (navigator.getState().isEmpty()) {
navigator.navigateTo(DashboardView.VIEW_NAME);
}
// menuButton1.addClickListener(event -> scroll_panel.setContent(new DashboardView()));
// menuButton2.addClickListener(event -> scroll_panel.setContent(new OrderView()));
// menuButton3.addClickListener(event -> scroll_panel.setContent(new AboutView()));
menuButton1.addClickListener(event -> doNavigate(DashboardView.VIEW_NAME));
menuButton2.addClickListener(event -> doNavigate(OrderView.VIEW_NAME));
menuButton3.addClickListener(event -> doNavigate(AboutView.VIEW_NAME));
}
public void checkAccessRestrictionForRequestedView(Navigator navigator) {
final View targetView = viewProvider.getView(navigator.getState());
if (targetView != null) {
final Collection<ConfigAttribute> attributes =
new SecuredAnnotationSecurityMetadataSource()
.getAttributes(
new SimpleMethodInvocation(
targetView,
ReflectionUtils.findMethod(
View.class, "enter", ViewChangeListener.ViewChangeEvent.class)));
try {
accessDecisionManager.decide(
SecurityContextHolder.getContext().getAuthentication(), targetView, attributes);
} catch (AccessDeniedException adExc) {
// must be ignored as this exception is already handled in the AccessDecisionManager
}
}
}
/**
* Internal initialization method, should not be overridden. This method is not declared as final
* because that would break compatibility with e.g. CDI.
*
* @param request the initialization request
* @param uiId the id of the new ui
*/
public void doInit(VaadinRequest request, int uiId) {
if (this.uiId != -1) {
throw new IllegalStateException("UI id has already been defined");
}
this.uiId = uiId;
// Actual theme - used for finding CustomLayout templates
theme = request.getParameter("theme");
getPage().init(request);
// Call the init overridden by the application developer
init(request);
Navigator navigator = getNavigator();
if (navigator != null) {
// Kickstart navigation if a navigator was attached in init()
navigator.navigateTo(navigator.getState());
}
}
@Override
protected void init(VaadinRequest request) {
setLocale(Locale.ENGLISH);
// Let's register a custom error handler to make the 'access denied' messages a bit friendlier.
setErrorHandler(
new DefaultErrorHandler() {
@Override
public void error(com.vaadin.server.ErrorEvent event) {
if (SecurityExceptionUtils.isAccessDeniedException(event.getThrowable())) {
Notification.show("Sorry, you don't have access to do that.");
} else {
super.error(event);
}
}
});
VerticalLayout layout = new VerticalLayout();
Panel viewContent = new Panel();
MenuBar menu = new MenuBar();
menu.addStyleName("navigation-menu");
layout.addComponents(menu, viewContent);
layout.setSizeFull();
viewContent.setSizeFull();
layout.setExpandRatio(viewContent, 1);
menu.addItem("Trading Area", e -> onDashboardClicked());
menu.addItem("Users", e -> onCustomersClicked());
navigator = new Navigator(this, viewContent);
springViewProvider.setAccessDeniedViewClass(AccessDeniedView.class);
navigator.addProvider(springViewProvider);
navigator.setErrorView(ErrorView.class);
setContent(layout);
String state = navigator.getState();
if (state != null && !state.isEmpty()) {
navigator.navigateTo(state);
} else {
navigator.navigateTo(TradingAreaView.NAME);
}
}