/**
    * 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.vaadin.layout;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.commons.lang3.StringUtils;
  
  import com.vaadin.shared.ui.ContentMode;
  import com.vaadin.ui.Component;
  import com.vaadin.ui.CssLayout;
  import com.vaadin.ui.Label;
  import com.vaadin.ui.VerticalLayout;
  
  /**
   * The SmallAppLayout, offering space for a header component and multiple sections stacked vertically.
   */
  public class SmallAppLayout extends VerticalLayout {
  
      private final CssLayout sectionsLayout = new CssLayout();
  
      private final CssLayout descriptionLayout = new CssLayout();
      private final Label description = new Label();
  
      public SmallAppLayout() {
          addStyleName("smallapp");
          setSizeFull();
          setSpacing(false);
          setMargin(false);
  
          description.addStyleName("smallapp-description");
          description.setContentMode(ContentMode.HTML);
          descriptionLayout.addStyleName("smallapp-description-layout");
          descriptionLayout.setVisible(false);
          descriptionLayout.addComponent(description);
  
          sectionsLayout.addStyleName("smallapp-sections");
          sectionsLayout.setSizeFull();
  
          addComponents(descriptionLayout, sectionsLayout);
          setExpandRatio(descriptionLayout, 0f);
          setExpandRatio(sectionsLayout, 1f);
      }
  
      @Override
      public String getDescription() {
          return description.getValue();
      }
  
      @Override
      public void setDescription(String description) {
          this.description.setValue(description);
          this.descriptionLayout.setVisible(StringUtils.isNoneBlank(description));
      }
  
      public List<Component> getSections() {
          Iterator<Component> it = sectionsLayout.iterator();
          List<Component> sections = new ArrayList<>();
          while (it.hasNext()) {
              sections.add(it.next());
          }
          return sections;
      }
  
      /**
       * Add new section with title into small app layout.
      */
     public void addSection(Component section, String sectionTitle) {
         section.setCaption(sectionTitle);
         addSection(section);
     }
 
     /**
      * Add new section without a title into small app layout.
      */
     public void addSection(Component section) {
         section.addStyleName("smallapp-section");
         sectionsLayout.addComponent(section);
     }
 
     public void removeSection(Component section) {
         sectionsLayout.removeComponent(section);
     }
 }