Java tutorial
/******************************************************************************* * Copyright (C) 2007 The University of Manchester * * Modifications to the initial code base are copyright of their * respective authors, or their employers as appropriate. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This program 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 ******************************************************************************/ package net.sf.taverna.raven.plugins.ui; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Font; import java.awt.Frame; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.IOException; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.border.CompoundBorder; import javax.swing.border.EmptyBorder; import javax.swing.border.EtchedBorder; import net.sf.taverna.t2.workbench.helper.HelpEnabledDialog; import org.apache.commons.io.FileUtils; import org.apache.log4j.Logger; /** * Dialog that lets user know that there are updates available. * * @author Alex Nenadic * */ @SuppressWarnings("serial") public class CheckForUpdatesDialog extends HelpEnabledDialog { private Logger logger = Logger.getLogger(CheckForUpdatesDialog.class); public CheckForUpdatesDialog() { super((Frame) null, "Updates available", true); initComponents(); } // For testing public static void main(String[] args) { CheckForUpdatesDialog dialog = new CheckForUpdatesDialog(); dialog.setVisible(true); } private void initComponents() { // Base font for all components on the form Font baseFont = new JLabel("base font").getFont().deriveFont(11f); // Message saying that updates are available JPanel messagePanel = new JPanel(new BorderLayout()); messagePanel.setBorder( new CompoundBorder(new EmptyBorder(10, 10, 10, 10), new EtchedBorder(EtchedBorder.LOWERED))); JLabel message = new JLabel( "<html><body>Updates are available for some Taverna components. To review and <br>install them go to 'Updates and plugins' in the 'Advanced' menu.</body><html>"); message.setFont(baseFont.deriveFont(12f)); message.setBorder(new EmptyBorder(5, 5, 5, 5)); message.setIcon(UpdatesAvailableIcon.updateIcon); messagePanel.add(message, BorderLayout.CENTER); // Buttons JPanel buttonsPanel = new JPanel(new FlowLayout(FlowLayout.CENTER)); JButton okButton = new JButton("OK"); // we'll check for updates again in 2 weeks okButton.setFont(baseFont); okButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { okPressed(); } }); buttonsPanel.add(okButton); getContentPane().setLayout(new BorderLayout()); getContentPane().add(messagePanel, BorderLayout.CENTER); getContentPane().add(buttonsPanel, BorderLayout.SOUTH); pack(); setResizable(false); // Center the dialog on the screen (we do not have the parent) Dimension dimension = getToolkit().getScreenSize(); Rectangle abounds = getBounds(); setLocation((dimension.width - abounds.width) / 2, (dimension.height - abounds.height) / 2); setSize(getPreferredSize()); } protected void okPressed() { try { FileUtils.touch(CheckForUpdatesStartupHook.lastUpdateCheckFile); } catch (IOException ioex) { logger.error("Failed to touch the 'Last update check' file for Taverna updates.", ioex); } closeDialog(); } private void closeDialog() { setVisible(false); dispose(); } }