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.view; import javax.inject.Inject; import org.springframework.core.env.Environment; import org.vaadin.spring.navigator.annotation.VaadinView; import org.vaadin.spring.samples.mvp.security.config.Scheme; import org.vaadin.spring.samples.mvp.ui.component.listener.LogoutLinkListener; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.GridLayout; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Layout; import com.vaadin.ui.Panel; @VaadinUIScope @VaadinView(name = BannerView.NAME) public class BannerView extends Panel implements View { private static final long serialVersionUID = 2140523090860294866L; public static final String NAME = "banner"; @Inject Environment env; @Inject private LogoutLinkListener logoutListener; public void setUser(String username) { setContent(buildRightArea(username)); } protected Layout buildUserArea(String username) { HorizontalLayout userArea = new HorizontalLayout(); String id = env.getProperty("app.security.scheme", Scheme.BASIC.id()); if (id.equals(Scheme.FORM.id())) { Button signOut = new Button("Sign Out"); signOut.addClickListener(logoutListener); userArea.addComponent(signOut); } Label loggedInUser = new Label(); loggedInUser.setValue(username); loggedInUser.setSizeUndefined(); userArea.addComponent(loggedInUser); return userArea; } protected GridLayout buildRightArea(String username) { GridLayout right = new GridLayout(1, 1); right.setWidth(100f, Unit.PERCENTAGE); Layout loggedInUser = buildUserArea(username); right.addComponent(loggedInUser, 0, 0); right.setComponentAlignment(loggedInUser, Alignment.MIDDLE_RIGHT); return right; } @Override public void enter(ViewChangeEvent event) { } }