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.gwt.client.ui;
  
  import org.opencms.gwt.client.ui.contextmenu.CmsContextMenuEntry;
  import org.opencms.gwt.client.ui.contextmenu.I_CmsContextMenuCommand;
  import org.opencms.gwt.client.ui.contextmenu.I_CmsContextMenuEntry;
  import org.opencms.gwt.client.ui.contextmenu.I_CmsValidatingContextMenuCommand;
  import org.opencms.gwt.shared.CmsContextMenuEntryBean;
  import org.opencms.util.CmsStringUtil;
  import org.opencms.util.CmsUUID;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Abstract class which implements the common part of all toolbar handler functionality.<p>
   *
   * @since 8.0.0
   */
  public abstract class A_CmsToolbarHandler implements I_CmsToolbarHandler {
  
      /**
       * Transforms a list of context menu entry beans to a list of context menu entries.<p>
       *
       * @param menuBeans the list of context menu entry beans
       * @param structureId the id of the resource for which to transform the context menu entries
       *
       * @return a list of context menu entries
       */
      public List<I_CmsContextMenuEntry> transformEntries(
          List<CmsContextMenuEntryBean> menuBeans,
          final CmsUUID structureId) {
  
          List<I_CmsContextMenuEntry> menuEntries = new ArrayList<I_CmsContextMenuEntry>();
          for (CmsContextMenuEntryBean bean : menuBeans) {
              I_CmsContextMenuEntry entry = transformSingleEntry(structureId, bean);
              if (entry != null) {
                  menuEntries.add(entry);
              }
          }
          return menuEntries;
      }
  
      /**
       * Creates a single context menu entry from a context menu entry bean.<p>
       *
       * @param structureId the structure id of the resource
       * @param bean the context menu entry bean
       *
       * @return the created context menu entry
       */
      protected I_CmsContextMenuEntry transformSingleEntry(final CmsUUID structureId, CmsContextMenuEntryBean bean) {
  
          String name = bean.getName();
          I_CmsContextMenuCommand command = null;
          if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(name)) {
              command = getContextMenuCommands().get(name);
          }
          if ((command == null) && !bean.hasSubMenu()) {
              return null;
          }
          if (command instanceof I_CmsValidatingContextMenuCommand) {
              boolean ok = ((I_CmsValidatingContextMenuCommand)command).validate(bean);
              if (!ok) {
                  return null;
              }
          }
          CmsContextMenuEntry entry = new CmsContextMenuEntry(this, structureId, command);
          entry.setBean(bean);
          if (bean.hasSubMenu()) {
              entry.setSubMenu(transformEntries(bean.getSubMenu(), structureId));
              if (entry.getSubMenu().isEmpty()) {
                  return null;
              }
          }
          return entry;
      }
  
  }
  