/**
    * This file Copyright (c) 2012-2018 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.vaadin.layout;
  
  import info.magnolia.ui.vaadin.gwt.client.layout.lazylayout.rpc.LazyLayoutClientRpc;
  import info.magnolia.ui.vaadin.gwt.client.layout.lazylayout.rpc.LazyLayoutServerRpc;
  import info.magnolia.ui.vaadin.gwt.client.layout.lazylayout.shared.ThumbnailData;
  import info.magnolia.ui.vaadin.gwt.shared.Range;
  import info.magnolia.ui.vaadin.layout.data.ThumbnailContainer;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import com.vaadin.server.Resource;
  
  /**
   * Sub implementaton of {@link LazyLayout} for thumbnails, aka the legacy 5.x UI.
   *
   * @deprecated since 6.0, will be removed with 5.x UI.
   */
  @Deprecated
  public class LazyThumbnailLayout extends LazyLayout {
  
      /**
       * Sub implementaton of {@link LazyLayoutServerRpcImpl} for thumbnails, aka the legacy 5.x UI.
       *
       * TODO: should be removed as soon as 5.x UI support is dropped.
       */
      @Deprecated
      class ThumbnailLayoutServerRpcImpl extends LazyLayoutServerRpcImpl {
          public ThumbnailLayoutServerRpcImpl(DataProviderKeyMapper mapper, LazyLayoutClientRpc clientRpc, LazyLayout lazyLayout) {
              super(mapper, clientRpc, lazyLayout);
          }
      }
  
      public LazyThumbnailLayout() {
          super();
      }
  
      @Override
      LazyLayoutServerRpc getRpc(DataProviderKeyMapper mapper, LazyLayoutClientRpc clientRpc) {
          return new ThumbnailLayoutServerRpcImpl(mapper, getRpc(), this);
      }
  
      @Override
      LazyLayoutClientRpc getRpc() {
          return getRpcProxy(LazyLayoutClientRpc.class);
      }
  
      public List fetchElements(Range range, DataProviderKeyMapper mapper) {
          final List<ThumbnailData> thumbnails = new ArrayList<>(range.length());
          for (int i = range.getStart(); i < range.getEnd(); ++i) {
              final Object id = mapper.itemIdAtIndex(i);
              final Object resource = ((ThumbnailContainer) this.getContainerDataSource()).getThumbnailProperty(id).getValue();
  
              boolean isRealResource = resource instanceof Resource;
              String thumbnailId = mapper.getKey(id);
              String iconFontId = isRealResource ? null : String.valueOf(resource);
              if (isRealResource) {
                  setResource(thumbnailId, (Resource) resource);
              }
              ThumbnailData thumbnailData = new ThumbnailData(thumbnailId, isRealResource);
              thumbnailData.setIconFontId(iconFontId);
              thumbnails.add(thumbnailData);
          }
          return thumbnails;
      }
  }