CDI support for Vaadin-7

We need to override VaadinServlet, UIProvider and UI class to provide CDI support in Vaadin application.

Servlet Code

	@WebServlet(urlPatterns = "/*")
	public class Servlet extends VaadinServlet {
	private static final long serialVersionUID = 2298654353565 L;
	@Inject
	private Instance applicationProvider;
	@SuppressWarnings("serial")
	private final SessionInitListener listener = new SessionInitListener() {
	public void sessionInit(SessionInitEvent event) throws ServiceException {
	event.getService();
	final VaadinSession session = event.getSession();
	session.addUIProvider(applicationProvider.get());
	}
	};
	public void init(ServletConfig servletConfig) throws ServletException {
	super.init(servletConfig);
	getService().addSessionInitListener(listener);
	}
	}

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UI Provider

	public class RootProvider extends UIProvider {
	@Inject
	private ApplicationUI rootProvider;
	@Override
	public UI createInstance(UICreateEvent event) {
	return rootProvider;
	}
	@Override
	public Class getUIClass(UIClassSelectionEvent event) {
	return ApplicationUI.class;
	}
	}

view raw UIProvider.java hosted with ❤ by GitHub

UI

	@Theme(ApplicationTheme.THEME_NAME)
	@SessionScoped
	public class ApplicationUI extends UI {
	protected void init(VaadinRequest request) {
	initialize(Locale.getDefault());
	}
	public void initialize(Locale locale) {
	user.setLocale(locale);
	addApplicationTitle();
	VerticalLayout view = new VerticalLayout();
	setContent(view);
	view.setStyleName(ApplicationTheme.VIEW);
	view.setWidth("100%");
	view.setHeight("100%");
	view.setSpacing(false);
	view.setMargin(false);
	Header header = CDIComponent.getInstance(Header.class);
	view.addComponent(header);
	header.addDefaultTab();
	}
	}

view raw UI.java hosted with ❤ by GitHub