/**
    * This file Copyright (c) 2016-2017 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.dam.app.assets.field;
  
  import info.magnolia.event.EventBus;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.api.context.UiContext;
  import info.magnolia.ui.api.event.AdmincentralEventBus;
  import info.magnolia.ui.api.event.ChooseDialogEventBus;
  import info.magnolia.ui.api.event.ContentChangedEvent;
  import info.magnolia.ui.api.i18n.I18NAuthoringSupport;
  import info.magnolia.ui.form.field.factory.AbstractFieldFactory;
  import info.magnolia.ui.imageprovider.ImageProvider;
  import info.magnolia.ui.vaadin.integration.contentconnector.ContentConnector;
  import info.magnolia.ui.workbench.WorkbenchPresenter;
  import info.magnolia.ui.workbench.event.SelectionChangedEvent;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  import org.apache.commons.collections4.CollectionUtils;
  
  import com.vaadin.v7.data.Item;
  import com.vaadin.v7.ui.Field;
  
  /**
   * Factory capable of producing {@link DamWorkbenchField}.
   */
  public class DamWorkbenchFieldFactory extends AbstractFieldFactory<DamWorkbenchFieldDefinition, Object> {
  
      private final DamWorkbenchFieldDefinition definition;
  
      private final WorkbenchPresenter workbenchPresenter;
      private final ContentConnector contentConnector;
  
      private final EventBus chooseDialogEventBus;
      private final EventBus admincentralEventBus;
  
      private final ComponentProvider componentProvider;
      private final SimpleTranslator i18n;
  
      @Inject
      public DamWorkbenchFieldFactory(
              DamWorkbenchFieldDefinition definition, Item relatedFieldItem, UiContext uiContext, I18NAuthoringSupport i18nAuthoringSupport,
              WorkbenchPresenter workbenchPresenter, ContentConnector contentConnector,
              @Named(ChooseDialogEventBus.NAME) EventBus chooseDialogEventBus,
              @Named(AdmincentralEventBus.NAME) EventBus admincentralEventBus, ComponentProvider componentProvider, SimpleTranslator i18n) {
  
          super(definition, relatedFieldItem, uiContext, i18nAuthoringSupport);
          this.definition = definition;
          this.workbenchPresenter = workbenchPresenter;
          this.contentConnector = contentConnector;
          this.chooseDialogEventBus = chooseDialogEventBus;
          this.admincentralEventBus = admincentralEventBus;
          this.componentProvider = componentProvider;
          this.i18n = i18n;
      }
  
      @Override
      protected Field<Object> createFieldComponent() {
          final DamWorkbenchField workbenchField = new DamWorkbenchField(definition.getWorkbench(), definition.getImageProvider(), workbenchPresenter, chooseDialogEventBus, i18n);
  
          if (admincentralEventBus != null) {
              admincentralEventBus.addHandler(ContentChangedEvent.class, event -> {
                  Object itemId = event.getItemId();
                  if (contentConnector.canHandleItem(itemId)) {
                      workbenchField.getPresenter().refresh();
                     workbenchField.getPresenter().select(itemId);
                 }
             });
         }
 
         ImageProvider imageProvider = componentProvider.newInstance(definition.getImageProvider().getImageProviderClass(), definition.getImageProvider());
 
         if (imageProvider != null) {
             Object thumbnailResource = imageProvider.getThumbnailResource(workbenchField.getValue(), ImageProvider.PORTRAIT_GENERATOR);
             workbenchField.setPreviewResource(thumbnailResource);
 
             this.chooseDialogEventBus.addHandler(SelectionChangedEvent.class, event -> {
                 Object selectedThumbnailResource = null;
                 // Only shows preview for single selection
                 if (CollectionUtils.isNotEmpty(event.getItemIds()) && event.getItemIds().size() == 1) {
                     selectedThumbnailResource = imageProvider.getThumbnailResource(event.getFirstItemId(), ImageProvider.PORTRAIT_GENERATOR);
                 }
                 workbenchField.setPreviewResource(selectedThumbnailResource);
             });
         }
 
         return workbenchField;
     }
 }