Java tutorial
/* * Copyright (c) 2016 Tyrel Haveman and contributors. * * This file is part of Limbr. * * Limbr is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Limbr is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Limbr. If not, see <http://www.gnu.org/licenses/>. */ package management.limbr.ui.view; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener; import com.vaadin.spring.annotation.SpringView; import com.vaadin.ui.Label; import com.vaadin.ui.VerticalLayout; import management.limbr.ui.PrivilegeLevels; import management.limbr.ui.RequiresPrivilege; import javax.annotation.PostConstruct; @RequiresPrivilege(level = PrivilegeLevels.None) @SpringView(name = DefaultView.VIEW_NAME) public class DefaultView extends VerticalLayout implements View { public static final String VIEW_NAME = ""; @PostConstruct void init() { addComponent(new Label("I don't have anything for you yet.")); } @Override public void enter(ViewChangeListener.ViewChangeEvent event) { // constructed in init(), nothing here } }