content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (C) Alkacon Software (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.containerpage;
  
  import org.opencms.file.CmsResource;
  import org.opencms.util.CmsUUID;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  import com.google.gwt.user.client.rpc.IsSerializable;
  
  /**
   * Helper bean used to collect a list of resources (usually relation targets) and keep track of whether any of them
   * have the "changed" state.<p>
   */
  public class CmsRelationTargetListBean implements IsSerializable {
  
      /** True if any of the resources have been changed. */
      private boolean m_changed;
  
      /** The already processed structure IDs, used to eliminate duplicates. */
      private transient Set<CmsUUID> m_processedIds = new HashSet<CmsUUID>();
  
      /** The collected resources. */
      private List<CmsResource> m_resources = new ArrayList<CmsResource>();
  
      /**
       * Creates a new instance.<p>
       */
      public CmsRelationTargetListBean() {
  
      }
  
      /**
       * Adds a new resource.<p>
       *
       * @param resource the resource to add
       */
      public void add(CmsResource resource) {
  
          if (!m_processedIds.contains(resource.getStructureId())) {
              m_resources.add(resource);
              m_processedIds.add(resource.getStructureId());
              m_changed |= !(resource.getState().isUnchanged());
          }
      }
  
      /**
       * Gets the list of resources which have been added.<p>
       *
       * @return the list of added resource
       */
      public List<CmsResource> getResources() {
  
          return Collections.unmodifiableList(m_resources);
      }
  
      /**
       * Returns true if any of the added resources have been changed.<p>
       *
       * @return true if any of the resources have been changed
       */
      public boolean isChanged() {
  
          return m_changed;
      }
  
  }
  