Java tutorial
/* * Copyright (C) 2011 wusel * * This program 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. * * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package de.wusel.partyplayer.gui; import de.wusel.partyplayer.gui.dialog.ChangePasswordDialog; import de.wusel.partyplayer.gui.dialog.DialogStatus; import de.wusel.partyplayer.gui.dialog.SettingsDialog; import de.wusel.partyplayer.settings.Settings; import de.wusel.partyplayer.util.PathUtil; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.IOException; import java.util.ArrayList; import java.util.List; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JProgressBar; import javax.swing.JToggleButton; import org.apache.commons.codec.digest.DigestUtils; import org.apache.log4j.Logger; import org.jdesktop.application.Application; import org.jdesktop.swingx.JXStatusBar; import org.jdesktop.swingx.prompt.PromptSupport; /** * * @author wusel */ public class LockingStatusbar extends JXStatusBar { private static final Logger log = Logger.getLogger(LockingStatusbar.class); private JProgressBar fileReaderProgressBar; private JLabel statusLabel; private JToggleButton lockButton; private JButton settingsButton; private JPasswordField pinCodeInputField; private final Application application; private final Settings settings; private final List<LockingListener> listeners = new ArrayList<LockingListener>(); private final PropertyChangeListener listener = new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { if (evt.getPropertyName().equals("message")) { statusLabel.setText(evt.getNewValue().toString()); } else if (evt.getPropertyName().equals("progress")) { fileReaderProgressBar.setValue((Integer) evt.getNewValue()); } } }; private final JFrame mainFrame; public LockingStatusbar(Application application, final JFrame mainFrame, final Settings settings) { this.application = application; this.settings = settings; this.application.getContext().getTaskMonitor().addPropertyChangeListener(listener); statusLabel = new JLabel("Ready"); fileReaderProgressBar = new JProgressBar(0, 100); pinCodeInputField = new JPasswordField(); PromptSupport.setPrompt("pin-code", pinCodeInputField); PromptSupport.setForeground(Color.GRAY, pinCodeInputField); pinCodeInputField.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { if (!pinCodeInputField.isEnabled()) { ChangePasswordDialog dialog = new ChangePasswordDialog(mainFrame, settings); dialog.setVisible(true); if (dialog.getStatus() == DialogStatus.CONFIRMED) { settings.setNewPassword(dialog.getPassDigest()); settings.backup(PathUtil.getSettingsFile()); } } } }); pinCodeInputField.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { boolean unlocked = settings .isPasswordValid(DigestUtils.md5Hex(new String(pinCodeInputField.getPassword()))); if (unlocked) { pinCodeInputField.transferFocus(); unlock(); } pinCodeInputField.setText(null); } }); lockButton = new JToggleButton(); lockButton.setIcon(getIcon("lock")); lockButton.setSelectedIcon(getIcon("lock_open")); lockButton.setEnabled(false); lockButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { lock(); } }); this.settingsButton = new JButton(getIcon("cog_edit")); this.settingsButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { showSettings(); } }); add(statusLabel, new JXStatusBar.Constraint(JXStatusBar.Constraint.ResizeBehavior.FILL)); add(fileReaderProgressBar, new JXStatusBar.Constraint(200)); add(pinCodeInputField, new JXStatusBar.Constraint(100)); add(lockButton, new JXStatusBar.Constraint()); add(settingsButton, new JXStatusBar.Constraint()); this.mainFrame = mainFrame; } public void init() { if (this.settings.isPasswordValid(null)) { unlock(); } else { lock(); } } private void lock() { this.lockButton.setEnabled(false); this.pinCodeInputField.setEnabled(true); this.settingsButton.setEnabled(false); PromptSupport.setPrompt("pin-code", pinCodeInputField); for (LockingListener lockingListener : listeners) { lockingListener.lock(); } } private void unlock() { this.lockButton.setEnabled(true); this.lockButton.setSelected(true); this.pinCodeInputField.setEnabled(false); this.settingsButton.setEnabled(true); PromptSupport.setPrompt("Click here to change password", pinCodeInputField); for (LockingListener lockingListener : listeners) { lockingListener.unlock(); } } private ImageIcon getIcon(String iconName) { try { return new ImageIcon( ImageIO.read(LockingStatusbar.class.getResourceAsStream("/icons/" + iconName + ".png"))); } catch (IOException ex) { log.fatal("could not load icon", ex); return null; } } private void showSettings() { SettingsDialog dialog = new SettingsDialog(mainFrame, settings.getSearchDirectories()); dialog.setVisible(true); if (dialog.getStatus() == DialogStatus.CONFIRMED) { settings.setSearchDirectories(dialog.getSelectedDirectories()); settings.backup(PathUtil.getSettingsFile()); for (LockingListener lockingListener : listeners) { lockingListener.settingsChanged(); } } } public void addLockingListener(LockingListener listener) { this.listeners.add(listener); } public void removeListener(LockingListener listener) { this.listeners.remove(listener); } }