/**
    * 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.workbench.thumbnail;
  
  import info.magnolia.ui.framework.ioc.AdmincentralFlavour;
  import info.magnolia.ui.vaadin.layout.LazyCardLayout;
  import info.magnolia.ui.vaadin.layout.LazyLayout;
  import info.magnolia.ui.vaadin.layout.LazyThumbnailLayout;
  
  import java.util.LinkedHashSet;
  import java.util.List;
  import java.util.Set;
  
  import com.vaadin.ui.Component;
  import com.vaadin.v7.data.Container;
  
  /**
   * Default Vaadin implementation of the thumbnail view.
   */
  public class ThumbnailViewImpl implements ThumbnailView {
  
      private Listener listener;
  
      private LazyLayout thumbnailLayout;
  
      public ThumbnailViewImpl() {
          if (AdmincentralFlavour.get().isM5()) {
              thumbnailLayout = new LazyThumbnailLayout();
          } else {
              thumbnailLayout = new LazyCardLayout();
          }
          thumbnailLayout.setSizeFull();
          thumbnailLayout.addStyleName("mgnl-workbench-thumbnail-view");
          bindHandlers();
      }
  
      private void bindHandlers() {
          thumbnailLayout.addElementSelectionListener(ids -> listener.onItemSelection(ids));
  
          thumbnailLayout.addDoubleClickListener(itemId -> listener.onDoubleClick(itemId));
  
          thumbnailLayout.addRightClickListener((itemId, clickX, clickY) -> {
              Set<Object> items = new LinkedHashSet<>();
              items.add(itemId);
              listener.onItemSelection(items);
              listener.onRightClick(itemId, clickX, clickY);
          });
      }
  
      @Override
      public void setListener(Listener listener) {
          this.listener = listener;
      }
  
      @Override
      public void select(List<Object> itemIds) {
          // ThumbnailLayout only supports single selection and because the client requests thumbnails we set the
          // selected itemId so it can update selection when that happens
          Object itemId = itemIds == null || itemIds.isEmpty() ? null : itemIds.get(0);
          thumbnailLayout.setSelectedItemId(itemId);
      }
  
      @Override
      public void refresh() {
          thumbnailLayout.refresh();
      }
  
      @Override
     public void setContainer(Container container) {
         thumbnailLayout.setContainerDataSource(container);
     }
 
     @Override
     public void setThumbnailSize(int width, int height) {
         thumbnailLayout.setElementSize(width, height);
     }
 
     @Override
     public Component asVaadinComponent() {
         return thumbnailLayout;
     }
 
     @Override
     public void setMultiselect(boolean multiselect) {
         // does nothing
     }
 
     @Override
     public void onShortcutKey(int keyCode, int[] modifierKeys) {
         if (listener != null) {
             listener.onShortcutKey(keyCode, modifierKeys);
         }
     }
 
     @Override
     public void expand(Object itemId) {
     }
 
 }