protected void setReadWrite(boolean writeable, DXEntry entry) {
    submit.setEnabled(writeable);
    reset.setEnabled(writeable);
    changeClass.setEnabled(writeable);
    opAttrs.setEnabled(writeable);
    myEditor.setEnabled(writeable);
    popupTableTool.setReadWrite(writeable);

    if (entry != null
        && entry.get("objectclass") != null) // only allow class changes if we can find
    changeClass.setEnabled(true); // some to start with!
  }
  /**
   * Opens a dialog that asks the user if they want to make a virtual entry a non virtual entry. If
   * the user clicks 'Yes' the 'change class' dialog opens.
   */
  public void doVirtualEntryDisplay() {
    virtualEntryDialog = new JDialog(owner, CBIntText.get("Virtual Entry"), true);

    CBButton btnYes =
        new CBButton(CBIntText.get("Yes"), CBIntText.get("Click yes to make a Virtual Entry."));
    CBButton btnNo =
        new CBButton(
            CBIntText.get("No"),
            CBIntText.get("Click no to cancel without making a Virtual Entry."));

    // TE: layout stuff...
    Container pane = virtualEntryDialog.getContentPane();
    pane.setLayout(new BorderLayout());
    CBPanel panel1 = new CBPanel();
    CBPanel panel2 = new CBPanel();
    CBPanel panel3 = new CBPanel();

    panel1.add(
        new JLabel(
            CBIntText.get(
                "This entry is a Virtual Entry.  Are you sure you want to give this entry an object class?")));
    panel2.add(btnYes);
    panel2.add(btnNo);

    panel3.makeWide();
    panel3.addln(panel1);
    panel3.addln(panel2);

    pane.add(panel3);

    btnYes.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            processVirtualEntry();
          }
        });

    btnNo.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            shutVirtualEntryDialog();
          }
        });
    virtualEntryDialog.setSize(475, 125);
    CBUtility.center(virtualEntryDialog, owner);
    virtualEntryDialog.setVisible(true);
  }
  /**
   * Constructor initialises the table and a popup tool, as well as initialising the required GUI
   * elements. It adds action listeners for the three main buttons, which include basic user input
   * validation checking.
   */
  public TableAttributeEditor(JFrame MyOwner) {
    // As usual, it is insanely hard to get the swing components to display
    // and work properly.  If JTable is not displayed in a scroll pane no headers are
    // displayed, and you have to do it manually.  (If you *do* display it
    // in a scrollbar, in this instance, it screws up sizing)
    // The broken header mis-feature is only mentioned in the tutorial,
    // not in the api doco - go figure.

    super();

    owner = MyOwner;

    // final JPanel mainPanel = (JPanel)this;

    tableData = new AttributeTableModel();

    attributeTable = new JTable(tableData);
    // attributeTable.setRowHeight(20);	// This may be needed, depends on how fussy people get about
    // the bottom of letters like 'y' getting cut off when the cell is selected - bug 3013.

    popupTableTool = new SmartPopupTableTool(attributeTable, tableData, (JXplorerBrowser) owner);

    // Set the renderer for the attribute type...
    final AttributeTypeCellRenderer typeRenderer = new AttributeTypeCellRenderer();

    attributeTable.setDefaultRenderer(AttributeNameAndType.class, typeRenderer);

    // Set the renderer for the attribute value...
    final AttributeValueCellRenderer valueRenderer = new AttributeValueCellRenderer();

    attributeTable.setDefaultRenderer(AttributeValue.class, valueRenderer);

    // Set the editor for the attribute value...
    myEditor = new AttributeValueCellEditor(owner);

    attributeTable.setDefaultEditor(AttributeValue.class, myEditor);

    attributeTable.getTableHeader().setReorderingAllowed(false);

    currentDN = null;

    JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
    buttonPanel.add(
        submit =
            new CBButton(
                CBIntText.get("Submit"), CBIntText.get("Submit your changes to the Directory.")));
    buttonPanel.add(
        reset =
            new CBButton(
                CBIntText.get("Reset"),
                CBIntText.get("Reset this entry i.e. cancels any changes.")));
    buttonPanel.add(
        changeClass =
            new CBButton(
                CBIntText.get("Change Classes"),
                CBIntText.get("Change the Object Class of this entry.")));
    buttonPanel.add(
        opAttrs =
            new CBButton(
                CBIntText.get("Properties"),
                CBIntText.get("View the Operational Attributes of this entry.")));

    // I don't really understand why we have to do this...
    // but without it these buttons over ride the default
    // button (Search Bar's search button), if they have
    // been clicked and the user hits the enter key?
    opAttrs.setDefaultCapable(false);
    submit.setDefaultCapable(false);
    reset.setDefaultCapable(false);
    changeClass.setDefaultCapable(false);

    setLayout(new BorderLayout(10, 10));

    tableScroller = new JScrollPane();
    attributeTable.setBackground(Color.white);
    tableScroller.setPreferredSize(new Dimension(300, 285));
    tableScroller.setViewportView(attributeTable);
    add(tableScroller, BorderLayout.CENTER);
    add(buttonPanel, BorderLayout.SOUTH);

    if ("true".equals(JXConfig.getProperty("lock.read.only")))
      title = CBIntText.get("Table Viewer");
    else title = CBIntText.get("Table Editor");

    setVisible(true);

    // triggers adding operational attributes of the current entry.
    opAttrs.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            displayOperationalAttributes();
          }
        });

    reset.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            myEditor.stopCellEditing();
            // tableData.reset();
            displayEntry(originalEntry, dataSource, false);
          }
        });

    submit.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            doSubmit();
          }
        });

    // This allows the user to change the objectclass attribute.
    // This is pretty tricky, because it changes what attributes are available.
    changeClass.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            changeClass();
          }
        });

    attributeTable.addMouseListener(
        new MouseAdapter() {
          public void mousePressed(MouseEvent e) {
            if (!doPopupStuff(e)) super.mousePressed(e);
          }

          public void mouseReleased(MouseEvent e) {
            if (!doPopupStuff(e)) super.mouseReleased(e);
          }

          // TODO need to have a way to call this from a keystroke...
          public boolean doPopupStuff(MouseEvent e) {
            if (e.isPopupTrigger() == false) return false;

            int row = attributeTable.rowAtPoint(new Point(e.getX(), e.getY()));

            attributeTable.clearSelection();
            attributeTable.addRowSelectionInterval(row, row);
            attributeTable.repaint();

            popupTableTool.registerCurrentRow(
                (AttributeNameAndType) attributeTable.getValueAt(row, 0),
                (AttributeValue) attributeTable.getValueAt(row, 1),
                row,
                tableData.getRDN()); // active path also set by valueChanged
            popupTableTool.show(attributeTable, e.getX(), e.getY());
            popupTableTool.registerCellEditor(myEditor); // TE: for bug fix 3107.
            return true;
          }
        });
  }
  private void displayEntry(
      DXEntry entry, DataBrokerQueryInterface ds, boolean storeOriginalEntry) {
    myEditor.stopCellEditing();

    //        checkedDN = null; // hack - resets promptForSave.
    // Store original Entry for reset
    if (entry != null && storeOriginalEntry && entry.getStatus() == DXEntry.NORMAL)
      originalEntry = new DXEntry(entry);

    // Set the globals...
    currentEntry = entry;
    dataSource = ds;

    if (entry != null && entry.size() == 0) {
      // If there is an entry and its size is zero - it's probably a virtual entry.
      // We need to give the user the option of adding an object class to it i.e. so that
      // it can be added to the directory as a real entry.
      //
      // Disable all the buttons except the 'Change Class' button - but rename this button
      // to 'Add Class' so the user hopefully has a bit more of an idea about what is going on.

      // Sets editor to a blank screen...
      tableData.clear();

      // Disable all buttons except the 'Change Class' button - rename this one...
      submit.setEnabled(false);
      reset.setEnabled(false);
      changeClass.setText(CBIntText.get("Add Class"));
      changeClass.setEnabled(true);
      opAttrs.setEnabled(false);

      virtualEntry = true;

      return;
    }

    virtualEntry = false;

    // Isn't a virtual entry...
    if (entry != null) currentDN = entry.getDN();

    // May have been changed to 'Add Class'...
    changeClass.setText(CBIntText.get("Change Class"));

    // Some quick faffing around, to see if we're coming back from a
    // change classes operation.
    if (classChangedOriginalEntry != null) {
      // If they have the same name, then we're reviewing the same entry - otherwise we've moved on
      if (entry == null || entry.getDN().equals(classChangedOriginalEntry.getDN()) == false)
        classChangedOriginalEntry = null;
    }

    /*
     *    Check that we're not displaying a new entry, and leaving unsaved changes
     *    behind.
     *
     *    This turns out to be quite tricky, and involves a bunch 'o special cases.
     *
     *    First check whether the table data has changed (if not, do nothing)
     *    ->  if the new entry is null, prompt user to save
     *    ->  OR if the DN has changed, and it wasn't due to a rename, prompt user to save
     *
     */
    if (tableData.changedByUser()) // user made changes - were they saved?  (i.e., are we
    { // displaying the result of those changes?)
      boolean prompt = false;

      DXEntry oldEntry = tableData.getOldEntry();

      if (oldEntry != null) {
        /*
         *    The code below is simply checking to see if the name of the
         *    new entry is different from the old entry, and if it is,
         *    whether that's due to the old entry being renamed.
         */
        if (entry == null) {
          prompt = true;
        }
        // TE: added the isEmpty check see bug: 3194.
        else if (!oldEntry.getDN().isEmpty() && entry.getDN().equals(oldEntry.getDN()) == false) {
          DN oldParent = oldEntry.getDN().getParent();

          DN newParent = entry.getDN().getParent();

          if (oldParent.equals(newParent) == false) {
            prompt = true;
          } else {
            if (entry.getDN().getLowestRDN().equals(tableData.getRDN()) == false) {
              prompt = true;
            }
          }
        }

        if (prompt) // yes, there is a risk of data loss - prompt the user.
        {
          checkForUnsavedChanges(); // see if the user wants to save their data
        }
      }
    }

    myEditor.setDataSource(
        ds); // Sets the DataBrokerQueryInterface in AttributeValueCellEditor used to get the syntax
             // of attributes.

    // only enable buttons if DataBrokerQueryInterface
    // is valid *and* we can modify data...

    if (dataSource == null || entry == null || dataSource.isModifiable() == false) {
      setReadWrite(false, entry);
    } else {
      setReadWrite(true, entry);
    }

    //        myEditor.stopCellEditing();

    if (entry != null) {
      entry.expandAllAttributes();
      currentDN = entry.getDN();

      tableData.insertAttributes(entry);
      popupTableTool.setDN(currentDN); // Sets the DN in SmartPopupTableTool.
      myEditor.setDN(
          currentDN); // Sets the DN in the attributeValueCellEditor which can be used to identify
                      // the entry that is being modified/
    } else {
      tableData.clear(); // Sets editor to a blank screen.
    }

    tableScroller.getVerticalScrollBar().setValue(0); // Sets the scroll bar back to the top.
  }