/**
    * This file Copyright (c) 2010-2018 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.form;
  
  import info.magnolia.ui.vaadin.gwt.client.form.formsection.connector.FormSectionState;
  import info.magnolia.ui.vaadin.gwt.client.form.rpc.FormSectionClientRpc;
  
  import java.util.Iterator;
  import java.util.LinkedList;
  import java.util.List;
  
  import com.vaadin.shared.Connector;
  import com.vaadin.ui.AbstractLayout;
  import com.vaadin.ui.Component;
  import com.vaadin.v7.ui.AbstractField;
  
  /**
   * Form layout server side implementation.
   */
  public class FormSection extends AbstractLayout {
  
      private final List<Component> components = new LinkedList<Component>();
  
      private String name;
  
      public FormSection() {
          addStyleName("v-form-layout");
      }
  
      @Override
      protected FormSectionState getState() {
          return (FormSectionState) super.getState();
      }
  
      @Override
      protected FormSectionState getState(boolean markAsDirty) {
          return (FormSectionState) super.getState(markAsDirty);
      }
  
      public void setComponentHelpDescription(Component c, String description) {
          if (components.contains(c)) {
              getState().helpDescriptions.put(c, description);
          } else {
              throw new IllegalArgumentException("Layout doesn't contain this component.");
          }
      }
  
      @Override
      public void addComponent(Component c) {
          super.addComponent(c);
          components.add(c);
          c.addStyleName("v-form-field");
          markAsDirty();
      }
  
      @Override
      public void removeComponent(Component c) {
          super.removeComponent(c);
          components.remove(c);
          markAsDirty();
      }
  
      @Override
      public void replaceComponent(Component oldComponent, Component newComponent) {
      }
  
      @Override
      public Iterator<Component> iterator() {
         return components.iterator();
     }
 
     public void setValidationVisible(boolean isVisible) {
         getState().isValidationVisible = isVisible;
     }
 
     @Override
     public int getComponentCount() {
         return components.size();
     }
 
     public Component getNextProblematicField(Connector currentFocused) {
         int startIndex = components.indexOf(currentFocused) + 1;
         while (startIndex < components.size()) {
             Component c = components.get(startIndex++);
             if (c instanceof AbstractField && !((AbstractField<?>) c).isValid()) {
                 return c;
             }
         }
         return null;
     }
 
     public void focusField(Component field) {
         getRpcProxy(FormSectionClientRpc.class).focus(field);
     }
 
     public String getName() {
         return name;
     }
 
     public void setName(String name) {
         this.name = name;
     }
 
     public List<Component> getComponents() {
         return this.components;
     }
 }