/**
    * This file Copyright (c) 2013-2014 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.about.app;
  
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.ui.vaadin.layout.SmallAppLayout;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Map.Entry;
  
  import javax.inject.Inject;
  
  import com.vaadin.data.Item;
  import com.vaadin.data.Property;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.FormLayout;
  import com.vaadin.ui.Label;
  
  /**
   * Implementation of the {@link AboutView} interface, for the community edition.
   */
  public class AboutViewImpl implements AboutView {
  
      protected final SmallAppLayout root = new SmallAppLayout();
  
      private Item dataSource;
  
      private Map<String, Property.Viewer> dataBindings = new HashMap<String, Property.Viewer>();
  
      protected final SimpleTranslator i18n;
  
      @Inject
      public AboutViewImpl(SimpleTranslator i18n) {
          this.i18n = i18n;
          root.setDescription(i18n.translate("about.app.main.description"));
          root.addSection(createInstallationSection());
      }
  
      private Component createInstallationSection() {
  
          // build and bind fields
          Component mgnlEdition = buildAndBind(AboutView.MAGNOLIA_EDITION_KEY, i18n.translate("about.app.main.mgnledition"));
          Component mgnlVersion = buildAndBind(AboutView.MAGNOLIA_VERSION_KEY, i18n.translate("about.app.main.mgnlversion"));
          Component mgnlInstance = buildAndBind(AboutView.MAGNOLIA_INSTANCE_KEY, i18n.translate("about.app.main.instance"));
  
          Component osInfo = buildAndBind(AboutView.OS_INFO_KEY, i18n.translate("about.app.main.os"));
          Component javaInfo = buildAndBind(AboutView.JAVA_INFO_KEY, i18n.translate("about.app.main.java"));
          Component serverInfo = buildAndBind(AboutView.SERVER_INFO_KEY, i18n.translate("about.app.main.server"));
          Component dbInfo = buildAndBind(AboutView.DB_INFO_KEY, i18n.translate("about.app.main.dbinfo"));
          Component dbDriverInfo = buildAndBind(AboutView.DB_DRIVER_INFO_KEY, i18n.translate("about.app.main.dbdriverinfo"));
          Component jcrInfo = buildAndBind(AboutView.JCR_INFO_KEY, i18n.translate("about.app.main.repository"));
  
          // layout
          FormLayout layout = new FormLayout();
  
          Label sectionTitle = new Label(i18n.translate("about.app.main.installation.title"));
          sectionTitle.addStyleName("section-title");
          layout.addComponent(sectionTitle);
  
          layout.addComponent(createFieldsetTitle(i18n.translate("about.app.main.magnolia.title")));
          layout.addComponent(mgnlEdition);
          layout.addComponent(mgnlVersion);
          layout.addComponent(mgnlInstance);
  
          Component environmentTitle = createFieldsetTitle(i18n.translate("about.app.main.environment.title"));
          environmentTitle.addStyleName("spacer");
          layout.addComponent(environmentTitle);
         layout.addComponent(osInfo);
         layout.addComponent(javaInfo);
         layout.addComponent(serverInfo);
         layout.addComponent(dbInfo);
         layout.addComponent(dbDriverInfo);
         layout.addComponent(jcrInfo);
 
         return layout;
     }
 
     protected Component createFieldsetTitle(String title) {
         Label fieldsetTitle = new Label(title);
         fieldsetTitle.addStyleName("fieldset-title");
         return fieldsetTitle;
     }
 
     protected Component buildAndBind(String key, String caption) {
         Label field = new Label();
         field.setCaption(caption);
         dataBindings.put(key, field);
         return field;
     }
 
     @Override
     public void setDataSource(Item item) {
         this.dataSource = item;
         refresh();
     }
 
     private void refresh() {
         for (Entry<String, Property.Viewer> entry : dataBindings.entrySet()) {
             Property.Viewer field = entry.getValue();
             Property<?> property = dataSource.getItemProperty(entry.getKey());
             field.setPropertyDataSource(property);
         }
     }
 
     @Override
     public Component asVaadinComponent() {
         return root;
     }
 
 }