/**
    * This file Copyright (c) 2010-2011 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.templating.editor.client;
  
  import info.magnolia.rendering.template.AreaDefinition;
  import info.magnolia.templating.editor.client.dom.MgnlElement;
  
  import com.google.gwt.event.dom.client.MouseDownEvent;
  import com.google.gwt.event.dom.client.MouseDownHandler;
  import com.google.gwt.user.client.ui.Label;
  
  /**
   * A Widget for adding components to area.
   *
   * @version $Id$
   */
  public class ComponentPlaceHolderWidget extends AbstractPlaceHolder {
  
      private boolean optional = false;
      private boolean created = false;
      private boolean showAddButton = false;
      private String availableComponents = "";
      private String type = "";
      private String areaWorkspace = "";
      private String areaPath = "";
      private String name = "";
  
      public ComponentPlaceHolderWidget(PageEditor pageEditor, MgnlElement mgnlElement) {
  
          super(mgnlElement);
          this.showAddButton = Boolean.parseBoolean(mgnlElement.getComment().getAttribute("showAddButton"));
          this.optional = Boolean.parseBoolean(mgnlElement.getComment().getAttribute("optional"));
          this.created = Boolean.parseBoolean(mgnlElement.getComment().getAttribute("created"));
          this.type = mgnlElement.getComment().getAttribute("type");
          this.name = mgnlElement.getComment().getAttribute("name");
  
  
          String areaContent = mgnlElement.getComment().getAttribute("content");
          int i = areaContent.indexOf(':');
          this.areaWorkspace = areaContent.substring(0, i);
          this.areaPath = areaContent.substring(i + 1);
  
          if(AreaDefinition.TYPE_NO_COMPONENT.equals(this.type)) {
              this.availableComponents = "";
          } else {
              this.availableComponents = mgnlElement.getComment().getAttribute("availableComponents");
          }
  
          this.addStyleName("component");
          Label areaName = new Label("Add Component");
  
          setVisible(false);
  
          add(areaName);
  
          createMouseEventsHandlers(pageEditor);
      }
      private void createMouseEventsHandlers(final PageEditor pageEditor) {
  
          if (this.optional) {
              if(!this.created) {
                  addDomHandler(new MouseDownHandler() {
  
                      @Override
                      public void onMouseDown(MouseDownEvent event) {
                          pageEditor.createComponent(areaWorkspace, areaPath, "mgnl:area");
  
                      }
                 }, MouseDownEvent.getType());
             }
             else {
                 // move content away from edit
                 //pageEditor.deleteComponent(path);
             }
         }
 
         else if (this.showAddButton){
             addDomHandler(new MouseDownHandler() {
 
                 @Override
                 public void onMouseDown(MouseDownEvent event) {
                     pageEditor.addComponent(areaWorkspace, areaPath, null, availableComponents);
 
                 }
             }, MouseDownEvent.getType());
         }
     }
 
     public void attach() {
         PageEditor.model.getEditBar(getMgnlElement()).getElement().getParentElement().appendChild(getElement());
         onAttach();
     }
 
 }