/**
    * This file Copyright (c) 2011-2018 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.form.field.factory;
  
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.api.context.UiContext;
  import info.magnolia.ui.api.i18n.I18NAuthoringSupport;
  import info.magnolia.ui.form.field.definition.TwinColSelectFieldDefinition;
  import info.magnolia.ui.form.field.transformer.Transformer;
  
  import java.util.HashSet;
  
  import javax.inject.Inject;
  
  import com.vaadin.v7.data.Item;
  import com.vaadin.v7.ui.AbstractSelect;
  import com.vaadin.v7.ui.TwinColSelect;
  
  /**
   * Creates and initializes a select field based on a field definition.
   *
   * @param <D> the definition
   */
  public class TwinColSelectFieldFactory<D extends TwinColSelectFieldDefinition> extends SelectFieldFactory<D> {
  
      private ComponentProvider componentProvider;
  
      @Inject
      public TwinColSelectFieldFactory(D definition, Item relatedFieldItem, UiContext uiContext, I18NAuthoringSupport i18nAuthoringSupport, ComponentProvider componentProvider) {
          super(definition, relatedFieldItem, uiContext, i18nAuthoringSupport);
          this.componentProvider = componentProvider;
      }
  
      @Override
      protected AbstractSelect createFieldComponent() {
          super.createFieldComponent();
          int rows = select.getContainerDataSource().size();
          ((TwinColSelect) select).setRows(rows < 20 ? rows : 20);
          select.setMultiSelect(definition.isMultiselect());
          select.setNullSelectionAllowed(true);
          //TODO: remove old i18n mechanism in next major version of ui
          String leftColumnCaption = getMessage(definition.getLeftColumnCaption());
          ((TwinColSelect) select).setLeftColumnCaption(isMessageKey(leftColumnCaption) ? "From" : leftColumnCaption);
          String rightColumnCaption = getMessage(definition.getRightColumnCaption());
          ((TwinColSelect) select).setRightColumnCaption(isMessageKey(rightColumnCaption) ? "To" : rightColumnCaption);
          return select;
      }
  
      @Override
      protected AbstractSelect createSelectionField() {
          return new TwinColSelect();
      }
  
      /**
       * Override in order to define the field property type.<br>
       * In any case set property type as {@link HashSet}, type used by the Vaadin MultiSelect field.
       */
      @Override
      protected Transformer<?> initializeTransformer(Class<? extends Transformer<?>> transformerClass) {
          return this.componentProvider.newInstance(transformerClass, item, definition, HashSet.class);
      }
  }