gt:         Object o = getDialogObject();
context: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software GmbH, please see the
   * company website: http://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: http://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.workplace.tools.workplace;
  
  import org.opencms.db.CmsUserSettings;
  import org.opencms.jsp.CmsJspActionElement;
  import org.opencms.synchronize.CmsSynchronizeSettings;
  import org.opencms.widgets.CmsCheckboxWidget;
  import org.opencms.widgets.CmsInputWidget;
  import org.opencms.widgets.CmsVfsFileWidget;
  import org.opencms.workplace.CmsWidgetDialog;
  import org.opencms.workplace.CmsWidgetDialogParameter;
  import org.opencms.workplace.CmsWorkplaceSettings;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.jsp.PageContext;
  
  /**
   * Dialog to edit the synchronize settings of the OpenCms Workplace.<p>
   *
   * @since 6.0.0
   */
  public class CmsSynchronizeSettingsDialog extends CmsWidgetDialog {
  
      /** Defines which pages are valid for this dialog. */
      public static final String[] PAGES = {"page1"};
  
      /** localized messages Keys prefix. */
      public static final String KEY_PREFIX = "sync";
  
      /** The synchronize settings which are edited on this dialog. */
      private CmsSynchronizeSettings m_synchronizeSettings;
  
      /**
       * Public constructor with JSP action element.<p>
       *
       * @param jsp an initialized JSP action element
       */
      public CmsSynchronizeSettingsDialog(CmsJspActionElement jsp) {
  
          super(jsp);
      }
  
      /**
       * Public constructor with JSP variables.<p>
       *
       * @param context the JSP page context
       * @param req the JSP request
       * @param res the JSP response
       */
      public CmsSynchronizeSettingsDialog(PageContext context, HttpServletRequest req, HttpServletResponse res) {
  
          this(new CmsJspActionElement(context, req, res));
      }
  
      /**
       * Commits the edited synchronize settings to the user settings.<p>
       */
      @Override
      public void actionCommit() {
  
          List<Throwable> errors = new ArrayList<Throwable>();
  
          try {
              // set the synchronize settings
              CmsUserSettings userSettings = new CmsUserSettings(getCms());
              m_synchronizeSettings.checkValues(getCms());
              userSettings.setSynchronizeSettings(m_synchronizeSettings);
              userSettings.save(getCms());
              setDialogObject(null);
          } catch (Throwable t) {
              errors.add(t);
          }
  
          // set the list of errors to display when saving failed
          setCommitErrors(errors);
      }
  
      /**
       * Creates the dialog HTML for all defined widgets of the named dialog (page).<p>
       *
       * This overwrites the method from the super class to create a layout variation for the widgets.<p>
       *
       * @param dialog the dialog (page) to get the HTML for
       * @return the dialog HTML for all defined widgets of the named dialog (page)
       */
      @Override
      protected String createDialogHtml(String dialog) {
  
          StringBuffer result = new StringBuffer(1024);
  
          // create widget table
          result.append(createWidgetTableStart());
  
          // show error header once if there were validation errors
          result.append(createWidgetErrorHeader());
  
          // create the widgets for the first dialog page
          result.append(dialogBlockStart(key(Messages.GUI_EDITOR_LABEL_ACTIVATE_SYNC_BLOCK_0)));
          result.append(createWidgetTableStart());
          result.append(createDialogRowsHtml(0, 0));
          result.append(createWidgetTableEnd());
          result.append(dialogBlockEnd());
          result.append(dialogBlockStart(key(Messages.GUI_EDITOR_LABEL_SOURCE_LIST_VFS_BLOCK_0)));
          result.append(createWidgetTableStart());
          result.append(createDialogRowsHtml(1, 1));
          result.append(createWidgetTableEnd());
          result.append(dialogBlockEnd());
          result.append(dialogBlockStart(key(Messages.GUI_EDITOR_LABEL_DESTINATION_RFS_BLOCK_0)));
          result.append(createWidgetTableStart());
          result.append(createDialogRowsHtml(2, 2));
          result.append(createWidgetTableEnd());
          result.append(dialogBlockEnd());
  
          // close widget table
          result.append(createWidgetTableEnd());
  
          return result.toString();
      }
  
      /**
       * Creates the list of widgets for this dialog.<p>
       */
      @Override
      protected void defineWidgets() {
  
          // initialize the object to use for the dialog
          initSynchronizeSettingsObject();
          setKeyPrefix(KEY_PREFIX);
          addWidget(new CmsWidgetDialogParameter(m_synchronizeSettings, "enabled", PAGES[0], new CmsCheckboxWidget()));
          addWidget(
              new CmsWidgetDialogParameter(
                  m_synchronizeSettings,
                  "destinationPathInRfs",
                  PAGES[0],
                  new CmsInputWidget()));
          addWidget(
              new CmsWidgetDialogParameter(
                  m_synchronizeSettings,
                  "sourceListInVfs",
                  "/",
                  PAGES[0],
                  new CmsVfsFileWidget(false, ""),
                  1,
                  CmsWidgetDialogParameter.MAX_OCCURENCES));
  
      }
  
      /**
       * @see org.opencms.workplace.CmsWidgetDialog#getPageArray()
       */
      @Override
      protected String[] getPageArray() {
  
          return PAGES;
      }
  
      /**
       * @see org.opencms.workplace.CmsWorkplace#initMessages()
       */
      @Override
      protected void initMessages() {
  
          // add specific dialog resource bundle
          addMessages(Messages.get().getBundleName());
          // add default resource bundles
          super.initMessages();
      }
  
      /**
       * Initializes the synchronize settings object for this dialog.<p>
       */
      protected void initSynchronizeSettingsObject() {
  
  