/**
    * This file Copyright (c) 2013-2018 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.dialog.formdialog;
  
  import info.magnolia.context.MgnlContext;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.ui.api.i18n.I18NAuthoringSupport;
  import info.magnolia.ui.dialog.BaseDialogViewImpl;
  import info.magnolia.ui.vaadin.dialog.BaseDialog;
  import info.magnolia.ui.vaadin.dialog.BaseDialog.DescriptionVisibilityEvent;
  import info.magnolia.ui.vaadin.dialog.FormDialog;
  import info.magnolia.ui.vaadin.form.Form;
  import info.magnolia.ui.vaadin.form.FormSection;
  import info.magnolia.ui.vaadin.lightcombobox.LightComboBox;
  
  import java.util.Collection;
  import java.util.List;
  import java.util.Locale;
  
  import javax.inject.Inject;
  
  import com.vaadin.v7.data.Item;
  import com.vaadin.v7.data.Property;
  import com.vaadin.v7.ui.ComboBox;
  import com.vaadin.v7.ui.Field;
  
  /**
   * Owns a Form and Dialog and connects them.
   */
  public class ItemFormView extends BaseDialogViewImpl implements FormView {
  
      private ComboBox languageSelector;
  
      private Form form = new Form();
  
      private final SimpleTranslator i18n;
  
      @Inject
      public ItemFormView(SimpleTranslator i18n) {
          super(new FormDialog());
          this.i18n = i18n;
  
          form.setErrorLabels(i18n.translate("validation.message.errors"), i18n.translate("validation.message.nextError"));
  
          getDialog().setContent(form);
          getDialog().addDescriptionVisibilityHandler(new BaseDialog.DescriptionVisibilityEvent.Handler() {
  
              @Override
              public void onDescriptionVisibilityChanged(DescriptionVisibilityEvent event) {
                  form.setDescriptionVisibility(event.isVisible());
              }
          });
  
          createLocaleSelector();
      }
  
      /**
       * @deprecated since 5.4.2 - use {@link #ItemFormView(SimpleTranslator)} instead.
       */
      @Deprecated
      public ItemFormView(SimpleTranslator i18n, I18NAuthoringSupport i18nAuthoringSupport) {
          this(i18n);
      }
  
      @Override
      public Item getItemDataSource() {
          return form.getItemDataSource();
      }
 
     @Override
     public void setItemDataSource(Item newDataSource) {
         form.setItemDataSource(newDataSource);
     }
 
     @Override
     public void addField(Field<?> field) {
         form.addField(field);
     }
 
     @Override
     public void setDescriptionVisibility(boolean isVisible) {
         form.setDescriptionVisibility(isVisible);
     }
 
     @Override
     public void setCaption(String caption) {
         getDialog().setCaption(caption);
     }
 
     @Override
     public void addFormSection(String tabName, FormSection inputFields) {
         form.addFormSection(tabName, inputFields);
     }
 
     @Override
     public void showValidation(boolean isVisible) {
         form.showValidation(isVisible);
     }
 
     @Override
     public void setShowAllEnabled(boolean enabled) {
         form.getContent().showAllTab(enabled, i18n.translate("form.tabs.all"));
     }
 
     @Override
     public boolean isValid() {
         return form.isValid();
     }
 
     @Override
     @Deprecated
     public Collection<Field<?>> getFields() {
         return form.getFields();
     }
 
     @Override
     public List<FormSection> getFormSections() {
         return form.getFormSections();
     }
 
     @Override
     public void setCurrentLocale(Locale locale) {
         this.languageSelector.setValue(locale);
         // Prevent updating locale in the first opening.
         if (languageSelector.getListeners(Property.ValueChangeEvent.class).isEmpty()) {
             form.setLocale(locale);
             languageSelector.addValueChangeListener(event -> updateLocale((Locale) event.getProperty().getValue()));
         }
     }
 
     @Override
     public void setAvailableLocales(List<Locale> locales) {
         if (locales != null && !locales.isEmpty()) {
             languageSelector.removeAllItems();
             for (Locale locale : locales) {
                 String label = locale.getDisplayLanguage(MgnlContext.getLocale());
                 if (!locale.getDisplayCountry(MgnlContext.getLocale()).isEmpty()) {
                     label += " (" + locale.getDisplayCountry(MgnlContext.getLocale()) + ")";
                 }
                 languageSelector.addItem(locale);
                 languageSelector.setItemCaption(locale, label);
             }
             getActionAreaView().setToolbarComponent(languageSelector);
         }
     }
 
     @Override
     public void setListener(FormView.Listener listener) {
         form.setListener(listener);
     }
 
     private void createLocaleSelector() {
         languageSelector = new LightComboBox();
         // Language selector must have width 125px (include padding right 10px)
         languageSelector.setWidth(115, Unit.PIXELS);
         languageSelector.setDescription(i18n.translate("languageSelector.description"));
     }
 
     protected void updateLocale(Locale locale) {
         boolean isValid = isValid();
         form.showValidation(!isValid);
         if (isValid) {
             form.setLocale(locale);
         } else {
             setCurrentLocale(form.getLocale());
         }
     }
 }