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 1.5 2007/11/02 17:50:36 taqua 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    import javax.swing.JMenuItem;
060    import javax.swing.JPanel;
061    import javax.swing.JPopupMenu;
062    import javax.swing.JScrollPane;
063    import javax.swing.JTable;
064    import javax.swing.KeyStroke;
065    import javax.swing.ListSelectionModel;
066    
067    /**
068     * A panel containing a table of system properties.
069     *
070     * @author David Gilbert
071     */
072    public class SystemPropertiesPanel extends JPanel {
073    
074        /** The table that displays the system properties. */
075        private JTable table;
076    
077        /** Allows for a popup menu for copying. */
078        private JPopupMenu copyPopupMenu;
079    
080        /** A copy menu item. */
081        private JMenuItem copyMenuItem;
082    
083        /** A popup listener. */
084        private PopupListener copyPopupListener;
085    
086        /**
087         * Constructs a new panel.
088         */
089        public SystemPropertiesPanel() {
090    
091            final String baseName = "org.jfree.ui.about.resources.AboutResources";
092            final ResourceBundle resources = ResourceBundle.getBundle(baseName);
093    
094            setLayout(new BorderLayout());
095            this.table = SystemProperties.createSystemPropertiesTable();
096            add(new JScrollPane(this.table));
097    
098            // Add a popup menu to copy to the clipboard...
099            this.copyPopupMenu = new JPopupMenu();
100    
101            final String label = resources.getString("system-properties-panel.popup-menu.copy");
102            final KeyStroke accelerator = (KeyStroke)
103                resources.getObject("system-properties-panel.popup-menu.copy.accelerator");
104            this.copyMenuItem = new JMenuItem(label);
105            this.copyMenuItem.setAccelerator(accelerator);
106            this.copyMenuItem.getAccessibleContext().setAccessibleDescription(label);
107            this.copyMenuItem.addActionListener(new ActionListener() {
108                public void actionPerformed(final ActionEvent e) {
109                    copySystemPropertiesToClipboard();
110                }
111            });
112            this.copyPopupMenu.add(this.copyMenuItem);
113    
114            // add popup Listener to the table
115            this.copyPopupListener = new PopupListener();
116            this.table.addMouseListener(this.copyPopupListener);
117    
118        }
119    
120        /**
121         * Copies the selected cells in the table to the clipboard, in tab-delimited format.
122         */
123        public void copySystemPropertiesToClipboard() {
124    
125            final StringBuffer buffer = new StringBuffer();
126            final ListSelectionModel selection = this.table.getSelectionModel();
127            final int firstRow = selection.getMinSelectionIndex();
128            final int lastRow = selection.getMaxSelectionIndex();
129            if ((firstRow != -1) && (lastRow != -1)) {
130                for (int r = firstRow; r <= lastRow; r++) {
131                    for (int c = 0; c < this.table.getColumnCount(); c++) {
132                        buffer.append(this.table.getValueAt(r, c));
133                        if (c != 2) {
134                            buffer.append("\t");
135                        }
136                    }
137                    buffer.append("\n");
138                }
139            }
140            final StringSelection ss = new StringSelection(buffer.toString());
141            final Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
142            cb.setContents(ss, ss);
143    
144        }
145    
146        
147        /**
148         * Returns the copy popup menu.
149         *
150         * @return Returns the copyPopupMenu.
151         */
152        protected final JPopupMenu getCopyPopupMenu()
153        {
154          return copyPopupMenu;
155        }
156        
157        /**
158         * Returns the table containing the system properties.
159         * @return Returns the table.
160         */
161        protected final JTable getTable()
162        {
163          return table;
164        }
165        
166        /**
167         * A popup listener.
168         */
169        private class PopupListener extends MouseAdapter {
170    
171            /**
172             * Default constructor.
173             */
174            public PopupListener() {
175            }
176    
177            /**
178             * Mouse pressed event.
179             *
180             * @param e  the event.
181             */
182            public void mousePressed(final MouseEvent e) {
183                maybeShowPopup(e);
184            }
185    
186            /**
187             * Mouse released event.
188             *
189             * @param e  the event.
190             */
191            public void mouseReleased(final MouseEvent e) {
192                maybeShowPopup(e);
193            }
194    
195            /**
196             * Event handler.
197             *
198             * @param e  the event.
199             */
200            private void maybeShowPopup(final MouseEvent e) {
201                if (e.isPopupTrigger()) {
202                    getCopyPopupMenu().show(
203                        getTable(), e.getX(), e.getY()
204                    );
205                }
206            }
207        }
208    
209    
210    }
211