Java tutorial
/******************************************************************************* * Copyright 2014 * Ubiquitous Knowledge Processing (UKP) Lab and FG Language Technology * Technische Universitt Darmstadt * * 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 de.tudarmstadt.ukp.clarin.webanno.webapp.standalone; import java.awt.EventQueue; import java.awt.GraphicsEnvironment; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.context.SmartLifecycle; public class StandaloneShutdownDialog implements SmartLifecycle { private final Log log = LogFactory.getLog(getClass()); private boolean running = false; @Override public void start() { running = true; displayShutdownDialog(); } @Override public void stop() { running = false; } @Override public boolean isRunning() { return running; } @Override public int getPhase() { return Integer.MIN_VALUE; } @Override public boolean isAutoStartup() { return true; } @Override public void stop(Runnable aCallback) { stop(); aCallback.run(); } private void displayShutdownDialog() { String serverId = ServerDetector.getServerId(); log.info("Running in: " + (serverId != null ? serverId : "unknown server")); log.info("Console: " + ((System.console() != null) ? "available" : "not available")); log.info("Headless: " + (GraphicsEnvironment.isHeadless() ? "yes" : "no")); // Show this only when run from the standalone JAR via a double-click if (System.console() == null && !GraphicsEnvironment.isHeadless() && ServerDetector.isWinstone()) { log.info("If you are running WebAnno in a server environment, please use '-Djava.awt.headless=true'"); EventQueue.invokeLater(new Runnable() { @Override public void run() { final JOptionPane optionPane = new JOptionPane(new JLabel( "<HTML>WebAnno is running now and can be accessed via <a href=\"http://localhost:8080\">http://localhost:8080</a>.<br>" + "WebAnno works best with the browsers Google Chrome or Safari.<br>" + "Use this dialog to shut WebAnno down.</HTML>"), JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_OPTION, null, new String[] { "Shutdown" }); final JDialog dialog = new JDialog((JFrame) null, "WebAnno", true); dialog.setContentPane(optionPane); dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE); dialog.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent we) { // Avoid closing window by other means than button } }); optionPane.addPropertyChangeListener(new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent aEvt) { if (dialog.isVisible() && (aEvt.getSource() == optionPane) && (aEvt.getPropertyName().equals(JOptionPane.VALUE_PROPERTY))) { System.exit(0); } } }); dialog.pack(); dialog.setVisible(true); } }); } else { log.info("Running in server environment or from command line: disabling interactive shutdown dialog."); } } }