Java tutorial
/* * jGnash, a personal finance application * Copyright (C) 2001-2012 Craig Cavanaugh * * 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 jgnash.ui.components; import com.jgoodies.forms.builder.DefaultFormBuilder; import com.jgoodies.forms.factories.ButtonBarFactory; import com.jgoodies.forms.layout.FormLayout; import java.awt.Frame; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowEvent; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JDialog; import javax.swing.JLabel; import javax.swing.UIManager; import jgnash.util.Resource; /** * A simple yes/no dialog. A substitute for JOption pane that improves * locale support and creates a more consistent user interface * * @author Craig Cavanaugh * */ public class YesNoDialog extends JDialog implements ActionListener { private final Resource rb = Resource.get(); private JButton noButton; private JButton yesButton; private final JComponent component; private boolean result; /** * Used for error messages. */ private static final int ERROR_MESSAGE = 0; /** * Used for information messages. */ private static final int INFORMATION_MESSAGE = 1; /** * Used for warning messages. */ public static final int WARNING_MESSAGE = 2; /** * Used for questions. */ private static final int QUESTION_MESSAGE = 3; public static boolean showYesNoDialog(final Frame parent, final JComponent component, final String title) { return showYesNoDialog(parent, component, title, QUESTION_MESSAGE); } public static boolean showYesNoDialog(final Frame parent, final JComponent component, final String title, final int messageType) { YesNoDialog d = new YesNoDialog(parent, component, title, messageType); d.setVisible(true); return d.result; } private YesNoDialog(final Frame parent, final JComponent component, final String title, final int messageType) { super(parent, true); setTitle(title); this.component = component; layoutMainPanel(messageType); noButton.addActionListener(this); yesButton.addActionListener(this); setDefaultCloseOperation(DISPOSE_ON_CLOSE); setLocationRelativeTo(parent); } private void layoutMainPanel(final int messageType) { FormLayout layout = new FormLayout("p, $lcgap, fill:p:g", "f:p:g, $ugap, f:p"); DefaultFormBuilder builder = new DefaultFormBuilder(layout); builder.setDefaultDialogBorder(); noButton = new JButton(rb.getString("Button.No")); yesButton = new JButton(rb.getString("Button.Yes")); builder.append(new JLabel(getIconForType(messageType)), component); builder.nextLine(); builder.nextLine(); builder.append(ButtonBarFactory.buildOKCancelBar(yesButton, noButton), 3); getContentPane().add(builder.getPanel()); pack(); } static Icon getIconForType(int messageType) { if (messageType < 0 || messageType > 3) { return null; } switch (messageType) { case ERROR_MESSAGE: return UIManager.getIcon("OptionPane.errorIcon"); case INFORMATION_MESSAGE: return UIManager.getIcon("OptionPane.informationIcon"); case WARNING_MESSAGE: return UIManager.getIcon("OptionPane.warningIcon"); case QUESTION_MESSAGE: return UIManager.getIcon("OptionPane.questionIcon"); } return null; } /** * Invoked when an action occurs. */ @Override public void actionPerformed(final ActionEvent e) { if (e.getSource() == noButton) { result = false; dispatchEvent(new WindowEvent(this, WindowEvent.WINDOW_CLOSING)); } else if (e.getSource() == yesButton) { result = true; dispatchEvent(new WindowEvent(this, WindowEvent.WINDOW_CLOSING)); } } }