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.galleries.client;
  
  import org.opencms.ade.galleries.client.ui.CmsResultListItem;
  import org.opencms.ade.galleries.shared.CmsResultItemBean;
  import org.opencms.gwt.client.dnd.CmsDNDHandler;
  import org.opencms.gwt.client.ui.I_CmsAutoHider;
  
  import com.google.gwt.user.client.ui.Widget;
  
  /**
   * A handler interface which allows the gallery dialog to interact with the context it is used in, e.g. the container page editor.
   */
  public interface I_CmsGalleryHandler {
  
      /**
       * This method is used to disable drag-and-drop for specific results.<p>
       *
       * If this returns false, drag and drop should be disabled for the result (however, if true is returned,
       * this does not automatically mean that drag and drop should be enabled.)
       *
       * @param resultBean the result for which drag-and-drop feasibility should be checked
       * @return false if DnD should be prohibited for the element, else true
       */
      boolean filterDnd(CmsResultItemBean resultBean);
  
      /**
       * Gets an additional widget to display in the type tab.<p>
       *
       * @return the additional widget to display
       */
      Widget getAdditionalTypeTabControl();
  
      /**
       * Gets the auto-hide parent.<p>
       *
       * @return the auto-hide parent
       */
      I_CmsAutoHider getAutoHideParent();
  
      /**
       * Gets the drag-and-drop handler for the result list.
       *
       * @return the drag-and-drop handler
       */
      CmsDNDHandler getDndHandler();
  
      /**
       * Processes a result list item.<p>
       *
       * @param item the item to process
       */
      void processResultItem(CmsResultListItem item);
  
  }
  