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