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1 /*
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2 * Copyright 2000 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.ui;
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26
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27 import java.io.*;
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28 import java.awt.*;
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29 import java.awt.event.*;
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30 import javax.swing.*;
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31 import javax.swing.text.*;
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32
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33 import sun.jvm.hotspot.debugger.*;
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34 import sun.jvm.hotspot.runtime.*;
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35 import sun.jvm.hotspot.utilities.*;
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36
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37 /** Uses {@link sun.jvm.hotspot.utilities.PointerFinder} to provide a
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38 graphical user interface to the VM's debugging utility "find". */
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39
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40 public class FindPanel extends JPanel {
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41 // UI widgets we need permanent handles to
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42 private JTextField addressField;
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43 private JTextArea textArea;
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44 private JLabel statusLabel;
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45
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46 public FindPanel() {
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47 super();
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48
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49 setLayout(new BorderLayout());
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50 Box hbox = Box.createHorizontalBox();
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51 hbox.add(new JLabel("Address: "));
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52 addressField = new JTextField(20);
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53 hbox.add(addressField);
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54 statusLabel = new JLabel();
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55 hbox.add(statusLabel);
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56 add(hbox, BorderLayout.NORTH);
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57
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58 JScrollPane scroller = new JScrollPane();
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59 textArea = new JTextArea();
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60 textArea.setEditable(false);
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61 textArea.setLineWrap(true);
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62 textArea.setWrapStyleWord(true);
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63 scroller.getViewport().add(textArea);
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64 add(scroller, BorderLayout.CENTER);
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65
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66 addressField.addActionListener(new ActionListener() {
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67 public void actionPerformed(ActionEvent e) {
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68 try {
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69 Address a = VM.getVM().getDebugger().parseAddress(addressField.getText());
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70 PointerLocation loc = PointerFinder.find(a);
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71 ByteArrayOutputStream bos = new ByteArrayOutputStream();
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72 loc.printOn(new PrintStream(bos));
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73 clear();
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74 textArea.append(bos.toString());
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75 statusLabel.setText("");
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76 }
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77 catch (NumberFormatException ex) {
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78 statusLabel.setText("<parse error>");
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79 }
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80 catch (AddressException ex) {
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81 statusLabel.setText("<bad address>");
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82 }
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83 catch (Exception ex) {
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84 ex.printStackTrace();
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85 statusLabel.setText("<error during find>");
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86 }
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87 }
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88 });
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89 }
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90
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91 private void clear() {
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92 Document doc = textArea.getDocument();
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93 if (doc.getLength() > 0) {
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94 try {
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95 doc.remove(0, doc.getLength());
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96 }
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97 catch (BadLocationException e) {
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98 }
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99 }
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100 }
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101 }
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