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.error; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener; import com.vaadin.spring.annotation.SpringView; import com.vaadin.spring.annotation.UIScope; import com.vaadin.ui.Label; import com.vaadin.ui.VerticalLayout; import management.limbr.ui.PrivilegeLevels; import management.limbr.ui.RequiresPrivilege; @RequiresPrivilege(level = PrivilegeLevels.NONE) @UIScope @SpringView(name = ErrorView.VIEW_NAME) @SuppressWarnings({ "squid:S2160" }) // don't need to override equals here public class ErrorView extends VerticalLayout implements View { public static final String VIEW_NAME = "error"; // TODO: Figure out how to handle localization and such in this class. // It gets instantiated directly with new ErrorView(), not with Spring, // so @Autowired doesn't work. @Override public void enter(ViewChangeListener.ViewChangeEvent event) { addComponent(new Label("An error happened.")); } }