Java tutorial
/* * Copyright 2015 The original authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.vaadin.spring.samples.mvp.ui.presenter; import javax.inject.Inject; import org.springframework.security.core.Authentication; import org.springframework.security.core.userdetails.User; import org.vaadin.spring.events.annotation.EventBusListenerMethod; import org.vaadin.spring.navigator.Presenter; import org.vaadin.spring.navigator.annotation.VaadinPresenter; import org.vaadin.spring.samples.mvp.ui.view.BannerView; import org.vaadin.spring.security.VaadinSecurity; @VaadinPresenter(viewName = BannerView.NAME) public class BannerPresenter extends Presenter<BannerView> { @Inject VaadinSecurity security; @EventBusListenerMethod(filter = StartupFilter.class) public void onStartup(Action action) { if (security.isAuthenticated()) { Authentication auth = security.getAuthentication(); User user = (User) auth.getPrincipal(); getView().setUser(user.getUsername()); } } }