1 /*

     2  * Copyright (c) 2001, 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.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 package sun.jvm.hotspot.bugspot;

    26 

    27 import java.awt.*;

    28 import java.awt.event.*;

    29 import java.util.*;

    30 import javax.swing.*;

    31 import sun.jvm.hotspot.debugger.cdbg.*;

    32 import sun.jvm.hotspot.runtime.*;

    33 import sun.jvm.hotspot.ui.*;

    34 

    35 /** This panel contains a ListBox with all of the stack frames in a

    36     given thread. When a given entry is selected, an event is

    37     fired. */

    38 

    39 public class StackTracePanel extends JPanel {

    40   public interface Listener {

    41     public void frameChanged(CFrame fr, JavaVFrame jfr);

    42   }

    43 

    44   class Model extends AbstractListModel implements ComboBoxModel {

    45     private Object selectedItem;

    46     public Object getElementAt(int index) {

    47       if (trace == null) return null;

    48       return trace.get(index);

    49     }

    50     public int getSize() {

    51       if (trace == null) return 0;

    52       return trace.size();

    53     }

    54     public Object getSelectedItem() {

    55       return selectedItem;

    56     }

    57     public void setSelectedItem(Object item) {

    58       selectedItem = item;

    59     }

    60     public void dataChanged() {

    61       fireContentsChanged(this, 0, trace.size());

    62     }

    63   }

    64 

    65   private java.util.List trace;

    66   private Model model;

    67   private JComboBox list;

    68   private java.util.List listeners;

    69 

    70   public StackTracePanel() {

    71     super();

    72 

    73     model = new Model();

    74 

    75     // Build user interface

    76     setLayout(new BorderLayout());

    77     setBorder(GraphicsUtilities.newBorder(5));

    78     list = new JComboBox(model);

    79     list.setPrototypeDisplayValue("ZZZZZZZZZZZZZZZZZZZZZZZZZZZZ");

    80     add(list, BorderLayout.CENTER);

    81 

    82     // Add selection listener

    83     list.addItemListener(new ItemListener() {

    84         public void itemStateChanged(ItemEvent e) {

    85           if (e.getStateChange() == ItemEvent.SELECTED) {

    86             fireFrameChanged();

    87           }

    88         }

    89       });

    90   }

    91 

    92   /** Takes a List of StackTraceEntry objects */

    93   public void setTrace(java.util.List trace) {

    94     this.trace = trace;

    95     model.dataChanged();

    96     list.setSelectedIndex(0);

    97     fireFrameChanged();

    98   }

    99 

   100   public void addListener(Listener listener) {

   101     if (listeners == null) {

   102       listeners = new ArrayList();

   103     }

   104     listeners.add(listener);

   105   }

   106 

   107   protected void fireFrameChanged() {

   108     if (listeners != null) {

   109       StackTraceEntry entry = (StackTraceEntry) trace.get(list.getSelectedIndex());

   110       for (Iterator iter = listeners.iterator(); iter.hasNext(); ) {

   111         ((Listener) iter.next()).frameChanged(entry.getCFrame(), entry.getJavaFrame());

   112       }

   113     }

   114   }

   115 }