/**
    * 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.pages.app.data;
  
  import info.magnolia.i18nsystem.I18nizer;
  import info.magnolia.rendering.template.registry.TemplateDefinitionRegistry;
  import info.magnolia.ui.field.SelectFieldSupport;
  
  import javax.inject.Inject;
  
  import com.vaadin.data.Converter;
  import com.vaadin.data.Result;
  import com.vaadin.data.provider.DataProvider;
  import com.vaadin.ui.IconGenerator;
  import com.vaadin.ui.ItemCaptionGenerator;
  
  /**
   * Support for selecting a template for creating a oage or editing a page.
   */
  public class AvailableTemplatesSelectFieldSupport implements SelectFieldSupport<String> {
  
      private final TemplateDefinitionRegistry templateDefinitionRegistry;
      private final I18nizer i18nizer;
      private final DataProvider<String, ?> dataProvider;
  
      @Inject
      public AvailableTemplatesSelectFieldSupport(TemplateDefinitionRegistry templateDefinitionRegistry, I18nizer i18nizer, DataProvider<String, ?> dataProvider) {
          this.templateDefinitionRegistry = templateDefinitionRegistry;
          this.i18nizer = i18nizer;
          this.dataProvider = dataProvider;
      }
  
      @Override
      public DataProvider<String, ?> getDataProvider() {
          return dataProvider;
      }
  
      @Override
      public ItemCaptionGenerator<String> getItemCaptionGenerator() {
          return id -> i18nizer.decorate(templateDefinitionRegistry.getProvider(id).get()).getTitle();
      }
  
      @Override
      public IconGenerator<String> getIconGenerator() {
          return definition -> null;
      }
  
      @Override
      public Converter<String, String> defaultConverter() {
          return new Converter<String, String>() {
              @Override
              public Result<String> convertToModel(String value, com.vaadin.data.ValueContext context) {
                  return Result.ok(value);
              }
  
              @Override
              public String convertToPresentation(String value, com.vaadin.data.ValueContext context) {
                  return value;
              }
          };
      }
  }