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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.tools.example.debug.gui; | ||
| 27 | |||
| 28 | import javax.swing.*; | ||
| 29 | import javax.swing.event.*; | ||
| 30 | import java.awt.*; | ||
| 31 | import com.sun.jdi.*; | ||
| 32 | import com.sun.tools.example.debug.bdi.*; | ||
| 33 | |||
| 34 | public class StackTraceTool extends JPanel { | ||
| 35 | |||
| 36 | private static final long serialVersionUID = 9140041989427965718L; | ||
| 37 | |||
| 38 | private Environment env; | ||
| 39 | |||
| 40 | private ExecutionManager runtime; | ||
| 41 | private ContextManager context; | ||
| 42 | |||
| 43 | private ThreadInfo tinfo; | ||
| 44 | |||
| 45 | private JList list; | ||
| 46 | private ListModel stackModel; | ||
| 47 | |||
| 48 | public StackTraceTool(Environment env) { | ||
| 49 | |||
| 50 | super(new BorderLayout()); | ||
| 51 | |||
| 52 | this.env = env; | ||
| 53 | this.runtime = env.getExecutionManager(); | ||
| 54 | this.context = env.getContextManager(); | ||
| 55 | |||
| 56 | stackModel = new DefaultListModel(); // empty | ||
| 57 | |||
| 58 | list = new JList(stackModel); | ||
| 59 | list.setCellRenderer(new StackFrameRenderer()); | ||
| 60 | |||
| 61 | JScrollPane listView = new JScrollPane(list); | ||
| 62 | add(listView); | ||
| 63 | |||
| 64 | // Create listener. | ||
| 65 | StackTraceToolListener listener = new StackTraceToolListener(); | ||
| 66 | context.addContextListener(listener); | ||
| 67 | list.addListSelectionListener(listener); | ||
| 68 | |||
| 69 | //### remove listeners on exit! | ||
| 70 | } | ||
| 71 | |||
| 72 | private class StackTraceToolListener | ||
| 73 | implements ContextListener, ListSelectionListener | ||
| 74 | { | ||
| 75 | |||
| 76 | // ContextListener | ||
| 77 | |||
| 78 | // If the user selects a new current frame, display it in | ||
| 79 | // this view. | ||
| 80 | |||
| 81 | //### I suspect we handle the case badly that the VM is not interrupted. | ||
| 82 | |||
| 83 | @Override | ||
| 84 | public void currentFrameChanged(CurrentFrameChangedEvent e) { | ||
| 85 | // If the current frame of the thread appearing in this | ||
| 86 | // view is changed, move the selection to track it. | ||
| 87 | int frameIndex = e.getIndex(); | ||
| 88 | ThreadInfo ti = e.getThreadInfo(); | ||
| 89 | if (e.getInvalidate() || tinfo != ti) { | ||
| 90 | tinfo = ti; | ||
| 91 | showStack(ti, frameIndex); | ||
| 92 | } else { | ||
| 93 | if (frameIndex < stackModel.getSize()) { | ||
| 94 | list.setSelectedIndex(frameIndex); | ||
| 95 | list.ensureIndexIsVisible(frameIndex); | ||
| 96 | } | ||
| 97 | } | ||
| 98 | } | ||
| 99 | |||
| 100 | // ListSelectionListener | ||
| 101 | |||
| 102 | @Override | ||
| 103 | public void valueChanged(ListSelectionEvent e) { | ||
| 104 | int index = list.getSelectedIndex(); | ||
| 105 | if (index != -1) { | ||
| 106 | //### should use listener? | ||
| 107 | try { | ||
| 108 | context.setCurrentFrameIndex(index); | ||
| 109 | } catch (VMNotInterruptedException exc) { | ||
| 110 | } | ||
| 111 | } | ||
| 112 | } | ||
| 113 | } | ||
| 114 | |||
| 115 | private class StackFrameRenderer extends DefaultListCellRenderer { | ||
| 116 | |||
| 117 | @Override | ||
| 118 | public Component getListCellRendererComponent(JList list, | ||
| 119 | Object value, | ||
| 120 | int index, | ||
| 121 | boolean isSelected, | ||
| 122 | boolean cellHasFocus) { | ||
| 123 | |||
| 124 | //### We should indicate the current thread independently of the | ||
| 125 | //### selection, e.g., with an icon, because the user may change | ||
| 126 | //### the selection graphically without affecting the current | ||
| 127 | //### thread. | ||
| 128 | |||
| 129 | super.getListCellRendererComponent(list, value, index, | ||
| 130 | isSelected, cellHasFocus); | ||
| 131 | if (value == null) { | ||
| 132 | this.setText("<unavailable>"); | ||
| 133 | } else { | ||
| 134 | StackFrame frame = (StackFrame)value; | ||
| 135 | Location loc = frame.location(); | ||
| 136 | Method meth = loc.method(); | ||
| 137 | String methName = | ||
| 138 | meth.declaringType().name() + '.' + meth.name(); | ||
| 139 | String position = ""; | ||
| 140 | if (meth.isNative()) { | ||
| 141 | position = " (native method)"; | ||
| 142 | } else if (loc.lineNumber() != -1) { | ||
| 143 | position = ":" + loc.lineNumber(); | ||
| 144 | } else { | ||
| 145 | long pc = loc.codeIndex(); | ||
| 146 | if (pc != -1) { | ||
| 147 | position = ", pc = " + pc; | ||
| 148 | } | ||
| 149 | } | ||
| 150 | // Indices are presented to the user starting from 1, not 0. | ||
| 151 | this.setText("[" + (index+1) +"] " + methName + position); | ||
| 152 | } | ||
| 153 | return this; | ||
| 154 | } | ||
| 155 | } | ||
| 156 | |||
| 157 | // Point this view at the given thread and frame. | ||
| 158 | |||
| 159 | private void showStack(ThreadInfo tinfo, int selectFrame) { | ||
| 160 | StackTraceListModel model = new StackTraceListModel(tinfo); | ||
| 161 | stackModel = model; | ||
| 162 | list.setModel(stackModel); | ||
| 163 | list.setSelectedIndex(selectFrame); | ||
| 164 | list.ensureIndexIsVisible(selectFrame); | ||
| 165 | } | ||
| 166 | |||
| 167 | private static class StackTraceListModel extends AbstractListModel { | ||
| 168 | |||
| 169 | private final ThreadInfo tinfo; | ||
| 170 | |||
| 171 | public StackTraceListModel(ThreadInfo tinfo) { | ||
| 172 | this.tinfo = tinfo; | ||
| 173 | } | ||
| 174 | |||
| 175 | @Override | ||
| 176 | public Object getElementAt(int index) { | ||
| 177 | try { | ||
| 178 | return tinfo == null? null : tinfo.getFrame(index); | ||
| 179 | } catch (VMNotInterruptedException e) { | ||
| 180 | //### Is this the right way to handle this? | ||
| 181 | //### Would happen if user scrolled stack trace | ||
| 182 | //### while not interrupted -- should probably | ||
| 183 | //### block user interaction in this case. | ||
| 184 | return null; | ||
| 185 | } | ||
| 186 | } | ||
| 187 | |||
| 188 | @Override | ||
| 189 | public int getSize() { | ||
| 190 | try { | ||
| 191 | return tinfo == null? 1 : tinfo.getFrameCount(); | ||
| 192 | } catch (VMNotInterruptedException e) { | ||
| 193 | //### Is this the right way to handle this? | ||
| 194 | return 0; | ||
| 195 | } | ||
| 196 | } | ||
| 197 | } | ||
| 198 | } | ||