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.actions;
  
  import org.opencms.file.CmsObject;
  import org.opencms.file.CmsResource;
  import org.opencms.main.CmsException;
  import org.opencms.main.CmsLog;
  import org.opencms.main.OpenCms;
  import org.opencms.ui.I_CmsDialogContext;
  import org.opencms.ui.contextmenu.CmsMenuItemVisibilityMode;
  import org.opencms.ui.contextmenu.CmsStandardVisibilityCheck;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.apache.commons.logging.Log;
  
  /**
   * Class representing an abstract gallery dialog action.<p>
   */
  public abstract class A_CmsGalleryDialogAction extends A_CmsWorkplaceAction {
  
      /** Logger instance for this class. */
      static final Log LOG = CmsLog.getLog(A_CmsGalleryDialogAction.class);
  
      /**
       * @see org.opencms.ui.contextmenu.I_CmsHasMenuItemVisibility#getVisibility(org.opencms.file.CmsObject, java.util.List)
       */
      public CmsMenuItemVisibilityMode getVisibility(CmsObject cms, List<CmsResource> resources) {
  
          if (resources.size() == 1) {
              CmsResource resource = resources.get(0);
              if (resource.isFolder()) {
                  String type = OpenCms.getResourceManager().getResourceType(resource).getTypeName();
                  if (Arrays.asList(getSupportedGalleryTypes()).contains(type)) {
                      return CmsStandardVisibilityCheck.VISIBLE.getVisibility(cms, resources);
                  }
              } else {
                  CmsResource parentGallery = getParentGallery(cms, resource);
                  if (parentGallery != null) {
                      List<CmsResource> parentList = new ArrayList<CmsResource>();
                      parentList.add(parentGallery);
                      return getVisibility(cms, parentList);
                  }
              }
          }
          return CmsMenuItemVisibilityMode.VISIBILITY_INVISIBLE;
      }
  
      /**
       * Returns the gallery.<p>
       *
       * @param context the dialog context
       * @return the gallery
       */
      protected CmsResource getGallery(I_CmsDialogContext context) {
  
          CmsResource resource = context.getResources().get(0);
          return resource.isFolder() ? resource : getParentGallery(context.getCms(), resource);
      }
  
      /**
       * Returns the gallery types supported by this dialog action.
       *
       * @return the gallery types
       */
      abstract protected String[] getSupportedGalleryTypes();
  
      /**
       * If the context of this gallery dialog action is a gallery item, returns the parent gallery.<p>
       *
       * @param cms the CMS object
       * @param resource the resource that has opened the context menu
       * @return the parent gallery
       */
      private CmsResource getParentGallery(CmsObject cms, CmsResource resource) {
  
          String parentFolder = CmsResource.getParentFolder(resource.getRootPath());
          parentFolder = cms.getRequestContext().removeSiteRoot(parentFolder);
          CmsResource parentGallery = null;
          try {
              parentGallery = cms.readResource(parentFolder);
          } catch (CmsException e) {
              LOG.error(e.getLocalizedMessage(), e);
          }
          return parentGallery;
      }
  }
  