    001    /* ========================================================================
    002     * JCommon : a free general purpose class library for the Java(tm) platform
    003     * ========================================================================
    004     *
    005     * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
    006     *
    007     * Project Info:  http://www.jfree.org/jcommon/index.html
    008     *
    009     * This library is free software; you can redistribute it and/or modify it
    010     * under the terms of the GNU Lesser General Public License as published by
    011     * the Free Software Foundation; either version 2.1 of the License, or
    012     * (at your option) any later version.
    013     *
    014     * This library is distributed in the hope that it will be useful, but
    015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017     * License for more details.
    018     *
    019     * You should have received a copy of the GNU Lesser General Public
    020     * License along with this library; if not, write to the Free Software
    021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022     * USA.
    023     *
    024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
    025     * in the United States and other countries.]
    026     *
    027     * --------------------------
    028     * SystemPropertiesPanel.java
    029     * --------------------------
    030     * (C) Copyright 2001-2004, by Object Refinery Limited.
    031     *
    032     * Original Author:  David Gilbert (for Object Refinery Limited);
    033     * Contributor(s):   -;
    034     *
    035     * $Id: SystemPropertiesPanel.java,v 1.4 2005/10/18 13:19:13 mungady Exp $
    036     *
    037     * Changes
    038     * -------
    039     * 26-Nov-2001 : Version 1 (DG);
    040     * 28-Feb-2002 : Changed package to com.jrefinery.ui.about (DG);
    041     * 04-Mar-2002 : Added popup menu code by Carl ?? (DG);
    042     * 15-Mar-2002 : Modified to use ResourceBundle for elements that require localisation (DG);
    043     * 26-Jun-2002 : Removed unnecessary import (DG);
    044     * 08-Oct-2002 : Fixed errors reported by Checkstyle (DG);
    045     *
    046     */
    047
    048    package org.jfree.ui.about;
    049
    050    import java.awt.BorderLayout;
    051    import java.awt.Toolkit;
    052    import java.awt.datatransfer.Clipboard;
    053    import java.awt.datatransfer.StringSelection;
    054    import java.awt.event.ActionEvent;
    055    import java.awt.event.ActionListener;
    056    import java.awt.event.MouseAdapter;
    057    import java.awt.event.MouseEvent;
    058    import java.util.ResourceBundle;
    059
    060    import javax.swing.JMenuItem;
    061    import javax.swing.JPanel;
    062    import javax.swing.JPopupMenu;
    063    import javax.swing.JScrollPane;
    064    import javax.swing.JTable;
    065    import javax.swing.KeyStroke;
    066    import javax.swing.ListSelectionModel;
    067
    068    /**
    069     * A panel containing a table of system properties.
    070     *
    071     * @author David Gilbert
    072     */
    073    public class SystemPropertiesPanel extends JPanel {
    074
    075        /** The table that displays the system properties. */
    076        private JTable table;
    077
    078        /** Allows for a popup menu for copying. */
    079        private JPopupMenu copyPopupMenu;
    080
    081        /** A copy menu item. */
    082        private JMenuItem copyMenuItem;
    083
    084        /** A popup listener. */
    085        private PopupListener copyPopupListener;
    086
    087        /**
    088         * Constructs a new panel.
    089         */
    090        public SystemPropertiesPanel() {
    091
    092            final String baseName = "org.jfree.ui.about.resources.AboutResources";
    093            final ResourceBundle resources = ResourceBundle.getBundle(baseName);
    094
    095            setLayout(new BorderLayout());
    096            this.table = SystemProperties.createSystemPropertiesTable();
    097            add(new JScrollPane(this.table));
    098
    099            // Add a popup menu to copy to the clipboard...
    100            this.copyPopupMenu = new JPopupMenu();
    101
    102            final String label = resources.getString("system-properties-panel.popup-menu.copy");
    103            final KeyStroke accelerator = (KeyStroke)
    104                resources.getObject("system-properties-panel.popup-menu.copy.accelerator");
    105            this.copyMenuItem = new JMenuItem(label);
    106            this.copyMenuItem.setAccelerator(accelerator);
    107            this.copyMenuItem.getAccessibleContext().setAccessibleDescription(label);
    108            this.copyMenuItem.addActionListener(new ActionListener() {
    109                public void actionPerformed(final ActionEvent e) {
    110                    copySystemPropertiesToClipboard();
    111                }
    112            });
    113            this.copyPopupMenu.add(this.copyMenuItem);
    114
    115            // add popup Listener to the table
    116            this.copyPopupListener = new PopupListener();
    117            this.table.addMouseListener(this.copyPopupListener);
    118
    119        }
    120
    121        /**
    122         * Copies the selected cells in the table to the clipboard, in tab-delimited format.
    123         */
    124        public void copySystemPropertiesToClipboard() {
    125
    126            final StringBuffer buffer = new StringBuffer();
    127            final ListSelectionModel selection = this.table.getSelectionModel();
    128            final int firstRow = selection.getMinSelectionIndex();
    129            final int lastRow = selection.getMaxSelectionIndex();
    130            if ((firstRow != -1) && (lastRow != -1)) {
    131                for (int r = firstRow; r <= lastRow; r++) {
    132                    for (int c = 0; c < this.table.getColumnCount(); c++) {
    133                        buffer.append(this.table.getValueAt(r, c));
    134                        if (c != 2) {
    135                            buffer.append("\t");
    136                        }
    137                    }
    138                    buffer.append("\n");
    139                }
    140            }
    141            final StringSelection ss = new StringSelection(buffer.toString());
    142            final Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
    143            cb.setContents(ss, ss);
    144
    145        }
    146
    147
    148        /**
    149         * Returns the copy popup menu.
    150         *
    151         * @return Returns the copyPopupMenu.
    152         */
    153        protected final JPopupMenu getCopyPopupMenu()
    154        {
    155          return copyPopupMenu;
    156        }
    157
    158        /**
    159         * Returns the table containing the system properties.
    160         * @return Returns the table.
    161         */
    162        protected final JTable getTable()
    163        {
    164          return table;
    165        }
    166
    167        /**
    168         * A popup listener.
    169         */
    170        private class PopupListener extends MouseAdapter {
    171
    172            /**
    173             * Default constructor.
    174             */
    175            public PopupListener() {
    176            }
    177
    178            /**
    179             * Mouse pressed event.
    180             *
    181             * @param e  the event.
    182             */
    183            public void mousePressed(final MouseEvent e) {
    184                maybeShowPopup(e);
    185            }
    186
    187            /**
    188             * Mouse released event.
    189             *
    190             * @param e  the event.
    191             */
    192            public void mouseReleased(final MouseEvent e) {
    193                maybeShowPopup(e);
    194            }
    195
    196            /**
    197             * Event handler.
    198             *
    199             * @param e  the event.
    200             */
    201            private void maybeShowPopup(final MouseEvent e) {
    202                if (e.isPopupTrigger()) {
    203                    getCopyPopupMenu().show(
    204                        getTable(), e.getX(), e.getY()
    205                    );
    206                }
    207            }
    208        }
    209
    210
    211    }
    212