content: /* ========================================================================
   * JCommon : a free general purpose class library for the Java(tm) platform
   * ========================================================================
   *
   * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jcommon/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library 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 Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
   * in the United States and other countries.]
   *
   * --------------------------
   * SystemPropertiesPanel.java
   * --------------------------
   * (C) Copyright 2001-2008, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * $Id: SystemPropertiesPanel.java,v 1.7 2008/12/18 09:57:32 mungady Exp $
   *
   * Changes
   * -------
   * 26-Nov-2001 : Version 1 (DG);
   * 28-Feb-2002 : Changed package to com.jrefinery.ui.about (DG);
   * 04-Mar-2002 : Added popup menu code by Carl ?? (DG);
   * 15-Mar-2002 : Modified to use ResourceBundle for elements that require
   *               localisation (DG);
   * 26-Jun-2002 : Removed unnecessary import (DG);
   * 08-Oct-2002 : Fixed errors reported by Checkstyle (DG);
   * 18-Dec-2008 : Use ResourceBundleWrapper - see JFreeChart patch 1607918 by
   *               Jess Thrysoee (DG);
   *
   */
  
  package org.jfree.ui.about;
  
  import java.awt.BorderLayout;
  import java.awt.Toolkit;
  import java.awt.datatransfer.Clipboard;
  import java.awt.datatransfer.StringSelection;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.MouseAdapter;
  import java.awt.event.MouseEvent;
  import java.util.ResourceBundle;
  
  import javax.swing.JMenuItem;
  import javax.swing.JPanel;
  import javax.swing.JPopupMenu;
  import javax.swing.JScrollPane;
  import javax.swing.JTable;
  import javax.swing.KeyStroke;
  import javax.swing.ListSelectionModel;
  
  import org.jfree.util.ResourceBundleWrapper;
  
  /**
   * A panel containing a table of system properties.
   *
   * @author David Gilbert
   */
  public class SystemPropertiesPanel extends JPanel {
  
      /** The table that displays the system properties. */
      private JTable table;
  
      /** Allows for a popup menu for copying. */
      private JPopupMenu copyPopupMenu;
  
      /** A copy menu item. */
      private JMenuItem copyMenuItem;
  
      /** A popup listener. */
      private PopupListener copyPopupListener;
  
      /**
       * Constructs a new panel.
       */
      public SystemPropertiesPanel() {
  
          final String baseName = "org.jfree.ui.about.resources.AboutResources";
          final ResourceBundle resources = ResourceBundleWrapper.getBundle(
                  baseName);
  
          setLayout(new BorderLayout());
          this.table = SystemProperties.createSystemPropertiesTable();
          add(new JScrollPane(this.table));
  
          // Add a popup menu to copy to the clipboard...
          this.copyPopupMenu = new JPopupMenu();
  
          final String label = resources.getString(
                  "system-properties-panel.popup-menu.copy");
          final KeyStroke accelerator = (KeyStroke) resources.getObject(
                      "system-properties-panel.popup-menu.copy.accelerator");
          this.copyMenuItem = new JMenuItem(label);
          this.copyMenuItem.setAccelerator(accelerator);
          this.copyMenuItem.getAccessibleContext().setAccessibleDescription(
                  label);
          this.copyMenuItem.addActionListener(new ActionListener() {
              public void actionPerformed(final ActionEvent e) {
                  copySystemPropertiesToClipboard();
              }
          });
          this.copyPopupMenu.add(this.copyMenuItem);
  
          // add popup Listener to the table
          this.copyPopupListener = new PopupListener();
          this.table.addMouseListener(this.copyPopupListener);
  
      }
  
      /**
       * Copies the selected cells in the table to the clipboard, in
       * tab-delimited format.
       */
      public void copySystemPropertiesToClipboard() {
  
          final StringBuffer buffer = new StringBuffer();
          final ListSelectionModel selection = this.table.getSelectionModel();
          final int firstRow = selection.getMinSelectionIndex();
          final int lastRow = selection.getMaxSelectionIndex();
          if ((firstRow != -1) && (lastRow != -1)) {
              for (int r = firstRow; r <= lastRow; r++) {
                  for (int c = 0; c < this.table.getColumnCount(); c++) {
                      buffer.append(this.table.getValueAt(r, c));
                      if (c != 2) {
                          buffer.append("\t");
                      }
                  }
                  buffer.append("\n");
              }
          }
          final StringSelection ss = new StringSelection(buffer.toString());
          final Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
          cb.setContents(ss, ss);
  
      }
  
  
      /**
       * Returns the copy popup menu.
       *
       * @return Returns the copyPopupMenu.
       */
      protected final JPopupMenu getCopyPopupMenu()
      {
        return this.copyPopupMenu;
      }
  
      /**
       * Returns the table containing the system properties.
       * @return Returns the table.
       */
      protected final JTable getTable()
      {
        return this.table;
      }
  
      /**
       * A popup listener.
       */
      private class PopupListener extends MouseAdapter {
  
          /**
           * Default constructor.
           */
          public PopupListener() {
          }
  
          /**
           * Mouse pressed event.
           *
           * @param e  the event.
           */
          public void mousePressed(final MouseEvent e) {
              maybeShowPopup(e);
          }
  
          /**
           * Mouse released event.
           *
           * @param e  the event.
           */
          public void mouseReleased(final MouseEvent e) {
              maybeShowPopup(e);
          }
  
          /**
           * Event handler.
           *
           * @param e  the event.
           */
          private void maybeShowPopup(final MouseEvent e) {
              if (e.isPopupTrigger()) {
                  getCopyPopupMenu().show(
                      getTable(), e.getX(), e.getY()
                  );
              }
          }
      }
  
  }
  
  