--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/ui/CommandProcessorPanel.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,226 @@
+/*
+ * Copyright 2005 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.ui;
+
+import java.io.*;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.swing.event.*;
+import javax.swing.text.*;
+
+import sun.jvm.hotspot.CommandProcessor;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.utilities.*;
+
+/** A JPanel subclass containing a scrollable text area displaying the
+    debugger's console, if it has one. This should not be created for
+    a debugger which does not have a console. */
+
+public class CommandProcessorPanel extends JPanel {
+    private CommandProcessor commands;
+    private JTextArea editor;
+    private boolean updating;
+    private int     mark;
+    private String  curText;  // handles multi-line input via '\'
+
+    // Don't run the "main" method of this class unless this flag is set to true first
+    private static final boolean DEBUGGING = false;
+
+    ByteArrayOutputStream baos = new ByteArrayOutputStream(10240);
+
+
+    public CommandProcessorPanel(CommandProcessor cp) {
+
+        commands = cp;
+
+        setLayout(new BorderLayout());
+
+        editor = new JTextArea();
+        editor.setDocument(new EditableAtEndDocument());
+        editor.setFont(GraphicsUtilities.lookupFont("Courier"));
+        JScrollPane scroller = new JScrollPane();
+        scroller.getViewport().add(editor);
+        add(scroller, BorderLayout.CENTER);
+
+        // Set up out
+        PrintStream o = new PrintStream(baos, true);
+        cp.setOutput(o);
+        cp.setErr(o);
+
+        editor.getDocument().addDocumentListener(new DocumentListener() {
+                public void changedUpdate(DocumentEvent e) {
+                }
+
+                public void insertUpdate(DocumentEvent e) {
+                    if (updating) return;
+                    beginUpdate();
+                    editor.setCaretPosition(editor.getDocument().getLength());
+                    if (insertContains(e, '\n')) {
+                        String cmd = getMarkedText();
+                        // Handle multi-line input
+                        if ((cmd.length() == 0) || (cmd.charAt(cmd.length() - 1) != '\\')) {
+                            // Trim "\\n" combinations
+                            final String ln = trimContinuations(cmd);
+                            SwingUtilities.invokeLater(new Runnable() {
+                                    public void run() {
+                                        beginUpdate();
+                                        try {
+                                            commands.executeCommand(ln);
+                                            commands.printPrompt();
+                                            Document d = editor.getDocument();
+                                            try {
+                                                d.insertString(d.getLength(), baos.toString(), null);
+                                            }
+                                            catch (BadLocationException ble) {
+                                                ble.printStackTrace();
+                                            }
+                                            baos.reset();
+                                            editor.setCaretPosition(editor.getDocument().getLength());
+                                            setMark();
+                                        } finally {
+                                            endUpdate();
+                                        }
+                                    }
+                                });
+                        }
+                    } else {
+                        endUpdate();
+                    }
+                }
+
+                public void removeUpdate(DocumentEvent e) {
+                }
+            });
+
+        // This is a bit of a hack but is probably better than relying on
+        // the JEditorPane to update the caret's position precisely the
+        // size of the insertion
+        editor.addCaretListener(new CaretListener() {
+                public void caretUpdate(CaretEvent e) {
+                    int len = editor.getDocument().getLength();
+                    if (e.getDot() > len) {
+                        editor.setCaretPosition(len);
+                    }
+                }
+            });
+
+        Box hbox = Box.createHorizontalBox();
+        hbox.add(Box.createGlue());
+        JButton button = new JButton("Clear Saved Text");
+        button.addActionListener(new ActionListener() {
+                public void actionPerformed(ActionEvent e) {
+                    clear();
+                }
+            });
+        hbox.add(button);
+        hbox.add(Box.createGlue());
+        add(hbox, BorderLayout.SOUTH);
+
+        clear();
+    }
+
+    public void requestFocus() {
+        editor.requestFocus();
+    }
+
+    public void clear() {
+        EditableAtEndDocument d = (EditableAtEndDocument) editor.getDocument();
+        d.clear();
+        commands.executeCommand("");
+        setMark();
+        editor.requestFocus();
+    }
+
+    public void setMark() {
+        ((EditableAtEndDocument) editor.getDocument()).setMark();
+    }
+
+    public String getMarkedText() {
+        try {
+            String s = ((EditableAtEndDocument) editor.getDocument()).getMarkedText();
+            int i = s.length();
+            while ((i > 0) && (s.charAt(i - 1) == '\n')) {
+                i--;
+            }
+            return s.substring(0, i);
+        }
+        catch (BadLocationException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    //--------------------------------------------------------------------------------
+    // Internals only below this point
+    //
+
+    private void beginUpdate() {
+        updating = true;
+    }
+
+    private void endUpdate() {
+        updating = false;
+    }
+
+    private boolean insertContains(DocumentEvent e, char c) {
+        String s = null;
+        try {
+            s = editor.getText(e.getOffset(), e.getLength());
+            for (int i = 0; i < e.getLength(); i++) {
+                if (s.charAt(i) == c) {
+                    return true;
+                }
+            }
+        }
+        catch (BadLocationException ex) {
+            ex.printStackTrace();
+        }
+        return false;
+    }
+
+    private String trimContinuations(String text) {
+        int i;
+        while ((i = text.indexOf("\\\n")) >= 0) {
+            text = text.substring(0, i) + text.substring(i+2, text.length());
+        }
+        return text;
+    }
+
+    public static void main(String[] args) {
+        JFrame frame = new JFrame();
+        frame.getContentPane().setLayout(new BorderLayout());
+        CommandProcessorPanel panel = new CommandProcessorPanel(null);
+        frame.getContentPane().add(panel, BorderLayout.CENTER);
+        frame.addWindowListener(new WindowAdapter() {
+                public void windowClosing(WindowEvent e) {
+                    System.exit(0);
+                }
+            });
+        frame.setSize(500, 500);
+        frame.show();
+        panel.requestFocus();
+    }
+}