001/*
002 * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
003 *
004 * This file is part of
005 * CleanSheets - a spreadsheet application for the Java platform.
006 *
007 * CleanSheets is free software; you can redistribute it and/or modify
008 * it under the terms of the GNU General Public License as published by
009 * the Free Software Foundation; either version 2 of the License, or
010 * (at your option) any later version.
011 *
012 * CleanSheets is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015 * GNU General Public License for more details.
016 *
017 * You should have received a copy of the GNU General Public License
018 * along with CleanSheets; if not, write to the Free Software
019 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020 */
021package csheets.ui.ctrl;
022
023import java.awt.event.ActionEvent;
024import java.awt.event.KeyEvent;
025
026import javax.swing.ImageIcon;
027import javax.swing.JOptionPane;
028import javax.swing.KeyStroke;
029
030import csheets.CleanSheets;
031import csheets.core.Workbook;
032import csheets.ui.FileChooser;
033
034/**
035 * An action for closing and unloading the active workbook.
036 * @author Einar Pehrson
037 */
038@SuppressWarnings("serial")
039public class CloseAction extends SaveAction {
040
041        /**
042         * Creates a new close action.
043         * @param app the CleanSheets application
044         * @param uiController the user interface controller
045         * @param chooser the file chooser to use when prompting the user for the file to save
046         */
047        public CloseAction(CleanSheets app, UIController uiController, FileChooser chooser) {
048                super(app, uiController, chooser);
049        }
050
051        protected String getName() {
052                return "Close";
053        }
054
055        protected void defineProperties() {
056                putValue(MNEMONIC_KEY, KeyEvent.VK_C);
057                putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_W, ActionEvent.CTRL_MASK));
058                putValue(SMALL_ICON, new ImageIcon(CleanSheets.class.getResource("res/img/close.gif")));
059        }
060
061        public void actionPerformed(ActionEvent e) {
062                Workbook workbook = uiController.getActiveWorkbook();
063                if (workbook != null) {
064                        if (uiController.isWorkbookModified(workbook)) {
065                                // Prompt to discard changes
066                                int option = JOptionPane.showConfirmDialog(
067                                        null,
068                                        "The current workbook has been modified.\n" +
069                                        "Do you want to save the file before closing it?",
070                                        "Save changes before closing?",
071                                        JOptionPane.YES_NO_CANCEL_OPTION,
072                                        JOptionPane.WARNING_MESSAGE
073                                );
074                
075                                if (option == JOptionPane.YES_OPTION)
076                                        // Saves file
077                                        super.actionPerformed(e);
078                
079                                if (!(option == JOptionPane.YES_OPTION
080                                   || option == JOptionPane.NO_OPTION))
081                                        return;
082                        }
083                        app.unload(workbook);
084                }
085        }
086
087        protected boolean requiresModification() {
088                return false;
089        }
090}