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1 /*
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2 * Copyright 2001 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.bugspot;
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26
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27 import java.awt.*;
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28 import java.awt.event.*;
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29 import java.util.*;
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30 import javax.swing.*;
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31 import sun.jvm.hotspot.debugger.cdbg.*;
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32 import sun.jvm.hotspot.runtime.*;
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33 import sun.jvm.hotspot.ui.*;
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34
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35 /** This panel contains a ListBox with all of the stack frames in a
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36 given thread. When a given entry is selected, an event is
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37 fired. */
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38
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39 public class StackTracePanel extends JPanel {
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40 public interface Listener {
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41 public void frameChanged(CFrame fr, JavaVFrame jfr);
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42 }
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43
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44 class Model extends AbstractListModel implements ComboBoxModel {
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45 private Object selectedItem;
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46 public Object getElementAt(int index) {
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47 if (trace == null) return null;
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48 return trace.get(index);
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49 }
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50 public int getSize() {
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51 if (trace == null) return 0;
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52 return trace.size();
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53 }
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54 public Object getSelectedItem() {
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55 return selectedItem;
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56 }
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57 public void setSelectedItem(Object item) {
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58 selectedItem = item;
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59 }
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60 public void dataChanged() {
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61 fireContentsChanged(this, 0, trace.size());
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62 }
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63 }
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64
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65 private java.util.List trace;
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66 private Model model;
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67 private JComboBox list;
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68 private java.util.List listeners;
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69
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70 public StackTracePanel() {
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71 super();
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72
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73 model = new Model();
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74
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75 // Build user interface
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76 setLayout(new BorderLayout());
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77 setBorder(GraphicsUtilities.newBorder(5));
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78 list = new JComboBox(model);
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79 list.setPrototypeDisplayValue("ZZZZZZZZZZZZZZZZZZZZZZZZZZZZ");
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80 add(list, BorderLayout.CENTER);
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81
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82 // Add selection listener
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83 list.addItemListener(new ItemListener() {
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84 public void itemStateChanged(ItemEvent e) {
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85 if (e.getStateChange() == ItemEvent.SELECTED) {
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86 fireFrameChanged();
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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
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92 /** Takes a List of StackTraceEntry objects */
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93 public void setTrace(java.util.List trace) {
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94 this.trace = trace;
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95 model.dataChanged();
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96 list.setSelectedIndex(0);
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97 fireFrameChanged();
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98 }
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99
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100 public void addListener(Listener listener) {
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101 if (listeners == null) {
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102 listeners = new ArrayList();
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103 }
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104 listeners.add(listener);
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105 }
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106
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107 protected void fireFrameChanged() {
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108 if (listeners != null) {
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109 StackTraceEntry entry = (StackTraceEntry) trace.get(list.getSelectedIndex());
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110 for (Iterator iter = listeners.iterator(); iter.hasNext(); ) {
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111 ((Listener) iter.next()).frameChanged(entry.getCFrame(), entry.getJavaFrame());
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112 }
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113 }
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114 }
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115 }
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