--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/bugspot/StackTracePanel.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.bugspot;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.util.*;
+import javax.swing.*;
+import sun.jvm.hotspot.debugger.cdbg.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.ui.*;
+
+/** This panel contains a ListBox with all of the stack frames in a
+    given thread. When a given entry is selected, an event is
+    fired. */
+
+public class StackTracePanel extends JPanel {
+  public interface Listener {
+    public void frameChanged(CFrame fr, JavaVFrame jfr);
+  }
+
+  class Model extends AbstractListModel implements ComboBoxModel {
+    private Object selectedItem;
+    public Object getElementAt(int index) {
+      if (trace == null) return null;
+      return trace.get(index);
+    }
+    public int getSize() {
+      if (trace == null) return 0;
+      return trace.size();
+    }
+    public Object getSelectedItem() {
+      return selectedItem;
+    }
+    public void setSelectedItem(Object item) {
+      selectedItem = item;
+    }
+    public void dataChanged() {
+      fireContentsChanged(this, 0, trace.size());
+    }
+  }
+
+  private java.util.List trace;
+  private Model model;
+  private JComboBox list;
+  private java.util.List listeners;
+
+  public StackTracePanel() {
+    super();
+
+    model = new Model();
+
+    // Build user interface
+    setLayout(new BorderLayout());
+    setBorder(GraphicsUtilities.newBorder(5));
+    list = new JComboBox(model);
+    list.setPrototypeDisplayValue("ZZZZZZZZZZZZZZZZZZZZZZZZZZZZ");
+    add(list, BorderLayout.CENTER);
+
+    // Add selection listener
+    list.addItemListener(new ItemListener() {
+        public void itemStateChanged(ItemEvent e) {
+          if (e.getStateChange() == ItemEvent.SELECTED) {
+            fireFrameChanged();
+          }
+        }
+      });
+  }
+
+  /** Takes a List of StackTraceEntry objects */
+  public void setTrace(java.util.List trace) {
+    this.trace = trace;
+    model.dataChanged();
+    list.setSelectedIndex(0);
+    fireFrameChanged();
+  }
+
+  public void addListener(Listener listener) {
+    if (listeners == null) {
+      listeners = new ArrayList();
+    }
+    listeners.add(listener);
+  }
+
+  protected void fireFrameChanged() {
+    if (listeners != null) {
+      StackTraceEntry entry = (StackTraceEntry) trace.get(list.getSelectedIndex());
+      for (Iterator iter = listeners.iterator(); iter.hasNext(); ) {
+        ((Listener) iter.next()).frameChanged(entry.getCFrame(), entry.getJavaFrame());
+      }
+    }
+  }
+}