Java tutorial
package com.morevaadin.vaadin7.springsecurity.ui; /* * #%L * Vaadin 7 Spring Security Integration * %% * Copyright (C) 2012 Nicolas Frnkel * %% * 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. * #L% */ import org.springframework.security.core.context.SecurityContextHolder; import com.google.common.eventbus.EventBus; import com.morevaadin.vaadin7.springsecurity.event.LogoutEvent; import com.vaadin.navigator.View; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.Label; import com.vaadin.ui.Panel; @SuppressWarnings("serial") public class MainView extends Panel implements View { private Label label; public MainView(final EventBus eventBus) { label = new Label(); addComponent(label); Button button = new Button("Logout"); button.addListener(new ClickListener() { @Override public void buttonClick(ClickEvent event) { eventBus.post(new LogoutEvent()); } }); addComponent(button); } @Override public void navigateTo(String fragmentParameters) { String user = SecurityContextHolder.getContext().getAuthentication().getName(); label.setValue("Welcome to " + user); } }