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.ade.galleries.client.preview;
  
  import org.opencms.ade.galleries.client.CmsGalleryController;
  import org.opencms.ade.galleries.client.ui.CmsGalleryDialog;
  import org.opencms.ade.galleries.shared.I_CmsBinaryPreviewProvider;
  import org.opencms.gwt.client.I_CmsHasInit;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * The binary resource preview factory.<p>
   *
   * @since 8.0.3
   */
  public final class CmsBinaryPreviewFactory implements I_CmsPreviewFactory, I_CmsHasInit {
  
      /** The preview registry. */
      private Map<String, CmsBinaryResourcePreview> m_previewRegistry;
  
      /**
       * Constructor.<p>
       */
      private CmsBinaryPreviewFactory() {
  
          m_previewRegistry = new HashMap<String, CmsBinaryResourcePreview>();
      }
  
      /**
       * Initializes this class.<p>
       */
      public static void initClass() {
  
          CmsBinaryPreviewFactory factory = new CmsBinaryPreviewFactory();
          CmsGalleryController.registerPreviewFactory(I_CmsBinaryPreviewProvider.PREVIEW_NAME, factory);
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.I_CmsPreviewFactory#getPreview(org.opencms.ade.galleries.client.ui.CmsGalleryDialog)
       */
      public I_CmsResourcePreview<?> getPreview(CmsGalleryDialog dialog) {
  
          if (!m_previewRegistry.containsKey(dialog.getDialogId())) {
              m_previewRegistry.put(dialog.getDialogId(), new CmsBinaryResourcePreview(dialog));
          }
          return m_previewRegistry.get(dialog.getDialogId());
      }
  
  }
  