content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://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, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://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.ade.sitemap.client.toolbar;
  
  import org.opencms.ade.sitemap.client.CmsSitemapView;
  import org.opencms.ade.sitemap.client.control.CmsSitemapController;
  import org.opencms.ade.sitemap.shared.CmsClientSitemapEntry;
  import org.opencms.gwt.client.CmsCoreProvider;
  import org.opencms.gwt.client.rpc.CmsRpcAction;
  import org.opencms.gwt.client.ui.CmsAlertDialog;
  import org.opencms.gwt.client.ui.CmsPushButton;
  import org.opencms.gwt.client.ui.I_CmsButton;
  import org.opencms.gwt.client.ui.I_CmsButton.ButtonStyle;
  import org.opencms.gwt.client.ui.I_CmsButton.Size;
  import org.opencms.gwt.client.util.CmsMessages;
  import org.opencms.gwt.shared.CmsReturnLinkInfo;
  import org.opencms.util.CmsStringUtil;
  
  import com.google.gwt.event.dom.client.ClickEvent;
  import com.google.gwt.event.dom.client.ClickHandler;
  import com.google.gwt.user.client.Window;
  
  /**
   * The toolbar button for jumping to the last visited container page.<p>
   *
   * @since 8.0.0
   */
  public class CmsToolbarGoBackButton extends CmsPushButton {
  
      /**
       * Constructor.<p>
       *
       * @param toolbar the toolbar instance
       * @param controller the sitemap controller
       */
      public CmsToolbarGoBackButton(final CmsSitemapToolbar toolbar, final CmsSitemapController controller) {
  
          setImageClass(I_CmsButton.ButtonData.BACK.getIconClass());
          setTitle(I_CmsButton.ButtonData.BACK.getTitle());
          setButtonStyle(ButtonStyle.FONT_ICON, null);
          setSize(Size.big);
          addClickHandler(new ClickHandler() {
  
              /**
               * @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent)
               */
              public void onClick(ClickEvent event) {
  
                  toolbar.onButtonActivation(CmsToolbarGoBackButton.this);
                  CmsToolbarGoBackButton.this.clearHoverState();
                  setDown(false);
                  setEnabled(false);
                  goBack(controller.getData().getReturnCode());
              }
          });
      }
  
      /**
       * Opens the publish dialog without changes check.<p>
       *
       * @param returnCode the return code previously passed to the sitemap editor
       */
      public static void goBack(final String returnCode) {
  
          if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(returnCode)) {
              CmsRpcAction<CmsReturnLinkInfo> goBackAction = new CmsRpcAction<CmsReturnLinkInfo>() {
  
                  @Override
                  public void execute() {
  
                      start(300, false);
                      CmsCoreProvider.getService().getLinkForReturnCode(returnCode, this);
                  }
  
                  @Override
                  protected void onResponse(CmsReturnLinkInfo result) {
  
                      stop(false);
                      if (result.getStatus() == CmsReturnLinkInfo.Status.ok) {
                          Window.Location.assign(result.getLink());
                      } else if (result.getStatus() == CmsReturnLinkInfo.Status.notfound) {
                          CmsMessages msg = org.opencms.ade.sitemap.client.Messages.get();
                          String title = msg.key(
                              org.opencms.ade.sitemap.client.Messages.GUI_RETURN_PAGE_NOT_FOUND_TITLE_0);
                          String content = msg.key(
                              org.opencms.ade.sitemap.client.Messages.GUI_RETURN_PAGE_NOT_FOUND_TEXT_0);
                          CmsAlertDialog alert = new CmsAlertDialog(title, content);
                          alert.center();
                      }
                  }
              };
  
              goBackAction.execute();
          } else {
              CmsSitemapController controller = CmsSitemapView.getInstance().getController();
              CmsClientSitemapEntry root = controller.getData().getRoot();
              String newPath = root.getSitePath();
              controller.leaveEditor(newPath);
          }
      }
  
  }
  