/**
   * Normally called by the 'Yes' button listener of the virtual entry dialog. This method opens the
   * New Entry dialog in simple mode (or Change Classes dialog). If the user selects one or more
   * object classes they are added to the entry and displayed in the table editor.
   */
  public void processVirtualEntry() {

    ChangeObjectClassWin userData = null;
    if (dataSource.getSchemaOps() == null) {
      JOptionPane.showMessageDialog(
          owner,
          CBIntText.get(
              "Because there is no schema currently published by the\ndirectory, changing an entry's object class is unavailable."),
          CBIntText.get("No Schema"),
          JOptionPane.INFORMATION_MESSAGE);
      return;
    } else {
      shutVirtualEntryDialog(); // TE: kill the prompt window.
      userData =
          new ChangeObjectClassWin(dataSource, currentEntry.getDN(), null, this, owner, true);
      userData.setSize(400, 250);
      CBUtility.center(userData, owner); // TE: centres window.
      userData.setVisible(true);

      while (userData.isVisible()) // TE: don't do anything until the New Entry window is closed.
      {
        try {
          wait();
        } catch (Exception e) {
          userData.dispose();
        }
      }
    }

    if (userData.newObjectClasses
        != null) // TE: if the user has selected one or more object classes - add them to the entry
                 // in the directory.
    {
      try {
        DXOps dxOps = new DXOps(dataSource.getLdapContext());
        dxOps.addAttribute(currentEntry.getDN(), userData.newObjectClasses);
        dataSource.getEntry(
            currentEntry
                .getDN()); // TE: hack??  forces the entry to be read again - otherwise we don't
                           // display the naming value.
      } catch (NamingException e) {
        CBUtility.error(
            TableAttributeEditor.this,
            CBIntText.get(
                "Unable to add new object classes to {0}.",
                new String[] {currentEntry.getDN().toString()}),
            e);
      }
    }
  }
  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.
  }
  /** Opens the change class dialog. */
  public void changeClass() { // JPanel mainPanel
    /*
     *    MINOR MAGIC
     *
     *    This code reuses the 'new entry window'.  In order to make things
     *    sane, we prompt the user to save any serious changes before continuing.
     *    (Things can get really wierd if the user changes the name and then
     *    tries to change the objectclass - best to avoid the whole issue.)
     */
    myEditor.stopCellEditing();

    if (virtualEntry) {
      doVirtualEntryDisplay();
      return;
    }

    /*
     *    classChangedOriginalEntry saves the original state of the entry
     *    between visits to NewEntryWin.  (- I wonder if it would be neater
     *    to just reset the 'oldEntry' state of the table every time? ).
     *    Check it's not been set already (i.e. Pathological User is paying
     *    multiple visits to the NewEntryWin.)
     */
    if (classChangedOriginalEntry == null) classChangedOriginalEntry = tableData.getOldEntry();

    DXEntry newEntry = tableData.getNewEntry();
    DN newDN = newEntry.getDN();

    /*
     *    Pathalogical user has messed with the name, *and* wants to
     *    change the object classes...
     */
    if (newDN.equals(classChangedOriginalEntry.getDN()) == false) {
      checkForUnsavedChanges();
      /*
      if (promptForSave() == false)  // we may need to reset the 'newEntry' data
      {                                   // if the user discards their changes.

          tableData.reset();              // resets the table before going on.

          newEntry = tableData.getNewEntry();
          newDN = newEntry.getDN();
      }
      else // user has saved data - so now we need to reset the 'classChangedOriginalEntry'
      {
      */
      // to the changed (and hopefully saved!) data.
      // NB: If the directory write fails, then the change classes will also fail...
      classChangedOriginalEntry = tableData.getNewEntry();
    }

    /*
     *    Open NewEntryWin, allowing the user to reset the objectclass attribute.
     */

    /*
            NewEntryWin userData = new NewEntryWin(newDN.parentDN(), newDN,
                                    dataSource,
                                    newEntry.getAsNonNullAttributes(),
                                    newDN.getLowestRDN().toString(), TableAttributeEditor.this,
                                    CBUtility.getParentFrame(mainPanel));
    */
    if (dataSource.getSchemaOps() == null) {
      JOptionPane.showMessageDialog(
          owner,
          CBIntText.get(
              "Because there is no schema currently published by the\ndirectory, changing an entry's object class is unavailable."),
          CBIntText.get("No Schema"),
          JOptionPane.INFORMATION_MESSAGE);
      return;
    } else {
      ChangeObjectClassWin userData =
          new ChangeObjectClassWin(
              dataSource,
              newDN,
              newEntry.getAsNonNullAttributes(),
              this,
              CBUtility.getParentFrame(this),
              false);
      userData.setSize(400, 250);
      CBUtility.center(userData, owner); // TE: centres window.
      userData.setVisible(true);
    }
  }