/**
    * This file Copyright (c) 2011-2018 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.editor.dom.processor;
  
  import info.magnolia.ui.vaadin.gwt.client.editor.dom.MgnlElement;
  import info.magnolia.ui.vaadin.gwt.client.editor.model.Model;
  import info.magnolia.ui.vaadin.gwt.client.widget.controlbar.AbstractBar;
  
  import com.google.gwt.dom.client.Element;
  import com.google.gwt.dom.client.Node;
  
  /**
   * Abstract processor for {@link MgnlElement}s.
   * Takes care of adding the element the {@link Model} and attaching the widgets at the right place in the DOM.
   */
  public abstract class AbstractMgnlElementProcessor {
  
      private MgnlElement mgnlElement;
  
      private Model model;
  
      private AbstractBar editBar;
  
      public AbstractMgnlElementProcessor(Model model, MgnlElement mgnlElement) {
          this.model = model;
          this.setMgnlElement(mgnlElement);
      }
  
      public abstract void process();
  
      protected void attachWidget() {
          attach();
          addToModel();
      }
  
      public void attach() {
          // if there is a marker for the controlBar insert here
          if (getMgnlElement().getEditElement() != null) {
              Element parent = getMgnlElement().getEditElement();
              parent.insertFirst(getEditBar().getElement());
          } else if (getMgnlElement().getFirstElement() != null && getMgnlElement().getFirstElement() == getMgnlElement().getLastElement()) {
              attach(getMgnlElement());
          } else {
              attach(getMgnlElement().getStartComment());
          }
          getEditBar().onAttach();
      }
  
      public void attach(MgnlElement mgnlElement) {
          Element element = mgnlElement.getFirstElement();
          if (element != null) {
              if (element.hasTagName("DIV")) {
                  element.insertFirst(getEditBar().getElement());
              } else {
                  final Node parentNode = element.getParentNode();
                  parentNode.insertBefore(getEditBar().getElement(), element);
              }
          }
      }
  
      public void attach(Element element) {
          Node parentNode = element.getParentNode();
          parentNode.insertAfter(getEditBar().getElement(), element);
      }
  
      protected void addToModel() {
          getModel().addElements(getMgnlElement(), getEditBar().getElement());
          getMgnlElement().setControlBar(getEditBar());
     }
 
     public void setMgnlElement(MgnlElement mgnlElement) {
         this.mgnlElement = mgnlElement;
     }
 
     public MgnlElement getMgnlElement() {
         return mgnlElement;
     }
 
     public Model getModel() {
         return model;
     }
 
     protected void setEditBar(AbstractBar editBar) {
         this.editBar = editBar;
     }
 
     public AbstractBar getEditBar() {
         return editBar;
     }
 
 }