/**
    * This file Copyright (c) 2013-2018 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.ui.form.field.component;
  
  import info.magnolia.context.MgnlContext;
  import info.magnolia.ui.imageprovider.ImageProvider;
  import info.magnolia.ui.vaadin.integration.jcr.JcrItemAdapter;
  import info.magnolia.ui.vaadin.integration.jcr.JcrNodeAdapter;
  
  import java.util.List;
  
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.vaadin.server.ExternalResource;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.FormLayout;
  import com.vaadin.ui.Image;
  import com.vaadin.v7.data.Item;
  import com.vaadin.v7.ui.HorizontalLayout;
  
  /**
   * {@link Item} implementation of {@link AbstractContentPreviewComponent}.
   */
  public abstract class AbstractBaseItemContentPreviewComponent extends AbstractContentPreviewComponent<Item> {
  
      private static final Logger log = LoggerFactory.getLogger(AbstractBaseItemContentPreviewComponent.class);
      protected ImageProvider imageProvider;
  
      public AbstractBaseItemContentPreviewComponent(String workspace) {
          super(workspace);
          // Always set the root layout as CompositionRoot.
          this.rootLayout = new HorizontalLayout();
          setCompositionRoot(rootLayout);
      }
  
      public abstract void setImageProvider();
  
      /**
       * Returned components (Label) will be displayed in the order of creation (first display is the first put into the list).
       *
       * @param fileItem
       * @return list of detail components (Generally a Label)
       * @throws RepositoryException
       */
      public abstract List<Component> createFieldDetail(Item fileItem) throws RepositoryException;
  
      @Override
      public Component refreshContentDetail(Item item) {
          FormLayout fileInfo = new FormLayout();
          fileInfo.setSizeUndefined();
          fileInfo.addStyleName("file-details");
          try {
              List<Component> res = createFieldDetail(item);
              fileInfo.addComponents(res.toArray(new Component[res.size()]));
          } catch (RepositoryException e) {
              log.warn("Could not get the related File node", e);
          }
          return fileInfo;
      }
  
      @Override
      public Component refreshContentPreview(Item item) {
          Image thumbnail = new Image();
         String path = imageProvider.getPortraitPath(((JcrItemAdapter)item).getItemId());
         if (StringUtils.isNotBlank(path)) {
             thumbnail = new Image("", new ExternalResource(path));
             thumbnail.addStyleName("file-preview-area");
         }
         return thumbnail;
     }
 
     /**
      * Retrieve an {@link Item} based on the itemPath.<br>
      * This {@link Item} is then used by sub classes to display Item detail and preview.
      */
     @Override
     protected Item refreshItem(String itemPath) {
         Item currentItem = null;
         try {
             Node fileNode = MgnlContext.getJCRSession(workspace).getNode(itemPath);
             if (fileNode != null) {
                 currentItem = new JcrNodeAdapter(fileNode);
             }
         } catch (RepositoryException e) {
             log.warn("Not able to refresh the Preview Component view for the following path: {}", itemPath, e);
         }
         return currentItem;
     }
 
 }