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.ui.contextmenu;
  
  import org.opencms.file.CmsObject;
  import org.opencms.file.CmsResource;
  import org.opencms.main.CmsException;
  import org.opencms.main.CmsLog;
  import org.opencms.ui.CmsVaadinUtils;
  import org.opencms.ui.I_CmsDialogContext;
  import org.opencms.ui.Messages;
  import org.opencms.ui.components.CmsLockedResourcesList;
  import org.opencms.util.CmsUUID;
  
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.commons.logging.Log;
  
  import com.google.common.collect.Lists;
  
  /**
   * A wrapper context menu action which first checks whether the resources for which the action is executed have any children
   * locked by different users.<p>
   *
   * If so, a dialog showing these resources will be displayed; otherwise the wrapped context menu action
   * will be executed.<p>
   */
  public class CmsBlockingLockCheck implements I_CmsContextMenuAction {
  
      /** Log instance for this class. */
      private static final Log LOG = CmsLog.getLog(CmsBlockingLockCheck.class);
  
      /** Context menu to execute if we don't have blocking locked resources. */
      private I_CmsContextMenuAction m_nextAction;
  
      /**
       * Creates a new instance.<p>
       *
       * @param nextAction the action to execute if we don't have blocking locked resources
       *
       */
      public CmsBlockingLockCheck(I_CmsContextMenuAction nextAction) {
          m_nextAction = nextAction;
      }
  
      /**
       * @see org.opencms.ui.contextmenu.I_CmsContextMenuAction#executeAction(org.opencms.ui.I_CmsDialogContext)
       */
      public void executeAction(final I_CmsDialogContext context) {
  
          CmsObject cms = context.getCms();
          List<CmsResource> resources = context.getResources();
          List<CmsResource> blocked = Lists.newArrayList();
          for (CmsResource resource : resources) {
              try {
                  blocked.addAll(cms.getBlockingLockedResources(resource));
              } catch (CmsException e) {
                  LOG.error(e.getLocalizedMessage(), e);
              }
          }
          if (blocked.isEmpty()) {
              m_nextAction.executeAction(context);
          } else {
  
              CmsLockedResourcesList dialog = new CmsLockedResourcesList(
                  cms,
                  blocked,
                  CmsVaadinUtils.getMessageText(Messages.GUI_CANT_PERFORM_OPERATION_BECAUSE_OF_LOCKED_RESOURCES_0),
                  new Runnable() {
  
                      public void run() {
  
                          List<CmsUUID> noStructureIds = Collections.emptyList();
                          context.finish(noStructureIds);
                      }
  
                  },
                  null);
  
              context.start(
                  CmsVaadinUtils.getMessageText(org.opencms.workplace.explorer.Messages.GUI_EXPLORER_CONTEXT_LOCKS_0),
                  dialog);
          }
      }
  
      /**
       * @see java.lang.Object#toString()
       */
      @Override
      public String toString() {
  
          return "CmsBlockingLockCheck[" + m_nextAction.toString() + "]";
      }
  }
  