/**
    * This file Copyright (c) 2019 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.contentapp.browser;
  
  import info.magnolia.ui.contentapp.browser.actions.ContextAwareActionPopup;
  import info.magnolia.ui.ValueContext;
  import info.magnolia.ui.contentapp.browser.preview.PreviewProvider;
  import info.magnolia.ui.contentapp.configuration.ThumbnailViewDefinition;
  import info.magnolia.ui.vaadin.layout.LazyThumbnailLayout;
  
  import java.util.Optional;
  
  import javax.inject.Inject;
  
  import com.vaadin.ui.Composite;
  import com.vaadin.ui.IconGenerator;
  import com.vaadin.ui.ItemCaptionGenerator;
  
  /**
   * Content view presenting a flat dataset via resizable thumbnails.
   * @param <T> item type.
   */
  public class ThumbnailView<T> extends Composite implements ContentView {
  
      private ContextAwareActionPopup<T> actionPopup;
  
      /**
       * @deprecated since 6.2.2, use {@link ThumbnailView#ThumbnailView(ValueContext, PreviewProvider, ThumbnailViewDefinition)} instead.
       */
      @Deprecated
      public ThumbnailView(ValueContext<T> valueContext, PreviewProvider<T> previewProvider) {
          this(valueContext, previewProvider, new ThumbnailViewDefinition<>());
      }
  
      @Inject
      public ThumbnailView(ValueContext<T> valueContext, PreviewProvider<T> previewProvider, ThumbnailViewDefinition<T> definition) {
          ThumbnailPresenter<T> presenter = create(ThumbnailPresenter.class);
  
          LazyThumbnailLayout<T> thumbnailLayout = new LazyThumbnailLayout<T>(presenter.dataProvider()) {
  
              @Override
              protected ItemCaptionGenerator<T> getItemCaptionGenerator() {
                  return presenter::getCaption;
              }
  
              @Override
              protected IconGenerator<T> getItemResourceGenerator() {
                  return item -> previewProvider.getResource(item).orElse(null);
              }
          };
          thumbnailLayout.addStyleName("mgnl-workbench-thumbnail-view");
          setCompositionRoot(thumbnailLayout);
          setSizeFull();
  
          thumbnailLayout.setElementSize(150, 120);
  
          if (!definition.isReadOnly()) {
              actionPopup = create(ContextAwareActionPopup.class, thumbnailLayout);
          }
          thumbnailLayout.refresh();
  
          valueContext.get().findFirst().ifPresent(thumbnailLayout::setSelectedItem);
          thumbnailLayout.addRightClickListener((item, clickX, clickY) -> valueContext.set(item));
          thumbnailLayout.addElementSelectionListener(valueContext::set);
          thumbnailLayout.addDoubleClickListener(item -> {
              valueContext.set(item);
              Optional.ofNullable(actionPopup).ifPresent(ContextAwareActionPopup::fireDefaultAction);
          });
     }
 }