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 GmbH & Co. KG, 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.workplace.list;
  
  import java.util.Comparator;
  import java.util.Iterator;
  import java.util.Locale;
  
  /**
   * Comparator for column sorting by first direct action icon names.<p>
   *
   * If the list items column definition has at least one direct action,
   * the icon of the first visible action is used for sorting
   * (using the <code>{@link I_CmsListDirectAction#setItem(CmsListItem)}</code> method);
   * if not, the <code>{@link Comparable}</code> interface is used.<p>
   *
   * @since 6.0.0
   *
   * @see org.opencms.workplace.list.CmsListColumnDefinition
   */
  public class CmsListItemActionIconComparator implements I_CmsListItemComparator {
  
      /**
       * Default Constructor.<p>
       */
      public CmsListItemActionIconComparator() {
  
          // no-op
      }
  
      /**
       * @see org.opencms.workplace.list.I_CmsListItemComparator#getComparator(java.lang.String, java.util.Locale)
       */
      public Comparator<CmsListItem> getComparator(final String columnId, final Locale locale) {
  
          return new Comparator<CmsListItem>() {
  
              /**
               * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
               */
              @SuppressWarnings({"unchecked", "rawtypes"})
              public int compare(CmsListItem li1, CmsListItem li2) {
  
                  if (li1 == li2) {
                      return 0;
                  }
  
                  CmsListColumnDefinition col = li1.getMetadata().getColumnDefinition(columnId);
                  if (col.getDirectActions().size() > 0) {
                      String i1 = null;
                      String i2 = null;
                      Iterator<I_CmsListDirectAction> it = col.getDirectActions().iterator();
                      while (it.hasNext()) {
                          I_CmsListDirectAction action = it.next();
                          CmsListItem tmp = action.getItem();
                          action.setItem(li1);
                          if (action.isVisible()) {
                              i1 = action.getIconPath();
                          }
                          action.setItem(li2);
                          if (action.isVisible()) {
                              i2 = action.getIconPath();
                          }
                          action.setItem(tmp);
                      }
                      if (i1 != null) {
                          if (i2 == null) {
                              return 1;
                          }
                          return i1.compareTo(i2);
                      } else if (i2 != null) {
                          return -1;
                      }
                      return 0;
                  } else {
  
                      Object o1 = li1.get(columnId);
                      Object o2 = li2.get(columnId);
  
                      if (o1 != null) {
                          if (o2 == null) {
                              return 1;
                          }
                          return ((Comparable)o1).compareTo(o2);
                      } else if (o2 != null) {
                          return -1;
                      }
                      return 0;
                  }
              }
          };
      }
  }