/**
    * 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.gwt.client.form.connector;
  
  import info.magnolia.ui.vaadin.form.Form;
  import info.magnolia.ui.vaadin.gwt.client.form.rpc.FormServerRpc;
  import info.magnolia.ui.vaadin.gwt.client.form.widget.FormFieldWrapper;
  import info.magnolia.ui.vaadin.gwt.client.form.widget.FormView;
  import info.magnolia.ui.vaadin.gwt.client.form.widget.FormViewImpl;
  
  import com.google.gwt.user.client.ui.Widget;
  import com.vaadin.client.ComponentConnector;
  import com.vaadin.client.ConnectorHierarchyChangeEvent;
  import com.vaadin.client.Util;
  import com.vaadin.client.communication.RpcProxy;
  import com.vaadin.client.ui.AbstractSingleComponentContainerConnector;
  import com.vaadin.shared.ui.Connect;
  
  /**
   * Client-side connector, a counter-part for {@link Form}.
   */
  @Connect(Form.class)
  public class FormConnector extends AbstractSingleComponentContainerConnector implements FormView.Presenter {
  
      private final FormServerRpc focusRpc = RpcProxy.create(FormServerRpc.class, this);
  
      private FormView view;
  
      @Override
      protected void init() {
          super.init();
          view.setPresenter(this);
          addStateChangeHandler("descriptionsVisible", stateChangeEvent -> getView().setDescriptionVisible(getState().descriptionsVisible));
  
          addStateChangeHandler("errorAmount", stateChangeEvent -> getView().setErrorAmount(getState().errorAmount));
  
          addStateChangeHandler("errorsLabel", stateChangeEvent -> getView().setErrorsLabel(getState().errorsLabel));
  
          addStateChangeHandler("nextErrorLabel", stateChangeEvent -> getView().setNextErrorLabel(getState().nextErrorLabel));
      }
  
      @Override
      protected Widget createWidget() {
          view = new FormViewImpl();
          return view.asWidget();
      }
  
      protected FormView getView() {
          if (view == null) {
              createWidget();
          }
          return view;
      }
  
      @Override
      public FormState getState() {
          return (FormState) super.getState();
      }
  
      @Override
      protected FormState createState() {
          return new FormState();
      }
  
      @Override
      public void jumpToNextError(FormFieldWrapper fieldWrapper) {
          ComponentConnector cc = fieldWrapper == null ? null : Util.findConnectorFor(fieldWrapper.getField());
          focusRpc.focusNextProblematicField(cc);
     }
 
     @Override
     public void updateCaption(ComponentConnector connector) {
         //NOP
     }
 
     @Override
     public void onConnectorHierarchyChange(ConnectorHierarchyChangeEvent connectorHierarchyChangeEvent) {
         updateContent();
     }
 
     protected void updateContent() {
         final ComponentConnector content = getContent();
         if (content != null) {
             this.view.setContent(content.getWidget());
         }
     }
 
     @Override
     public void onErrorsDisplayed() {
         getLayoutManager().setNeedsMeasure(FormConnector.this);
     }
 }