RegionTagHandler.java

/**********************************************************************************
* $URL:https://source.sakaiproject.org/svn/osp/trunk/presentation/tool/src/java/org/theospi/portfolio/presentation/render/RegionTagHandler.java $
* $Id:RegionTagHandler.java 9134 2006-05-08 20:28:42Z chmaurer@iupui.edu $
***********************************************************************************
*
 * Copyright (c) 2005, 2006, 2008 The Sakai Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.opensource.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*
**********************************************************************************/
package org.theospi.portfolio.presentation.render;

import java.io.IOException;

import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;

import org.theospi.jsf.intf.ComponentWrapper;
import org.theospi.jsf.intf.XmlDocumentContainer;
import org.theospi.jsf.intf.XmlTagFactory;
import org.theospi.portfolio.presentation.component.RegionComponent;
import org.theospi.portfolio.presentation.component.SequenceComponent;
import org.xml.sax.Attributes;

/**
 * Created by IntelliJ IDEA.
 * User: John Ellis
 * Date: Dec 29, 2005
 * Time: 3:10:07 PM
 * To change this template use File | Settings | File Templates.
 */
public class RegionTagHandler extends LayoutPageHandlerBase {

   public RegionTagHandler(XmlTagFactory factory) {
      super(factory);
   }

   public ComponentWrapper startElement(FacesContext context, ComponentWrapper parent, String uri, String localName,
                                        String qName, Attributes attributes) throws IOException {
      UIViewRoot root = context.getViewRoot();
      String regionId = attributes.getValue("id");
      RegionComponent container = (RegionComponent) context.getApplication().createComponent(RegionComponent.COMPONENT_TYPE);
      container.setRegionId(regionId);
      container.setId(root.createUniqueId());

      parent.getComponent().getChildren().add(container);

      XmlDocumentContainer parentContainer = getParentContainer(parent.getComponent());
      String mapVar = parentContainer.getVariableName();

      if (parentContainer instanceof SequenceComponent) {
         XmlDocumentContainer parentParentContainer = getParentContainer(((UIComponent)parentContainer).getParent());
         String globalMapVar = parentParentContainer.getVariableName();

         ValueBinding vb = context.getApplication().createValueBinding("#{"+globalMapVar+ "." + regionId + "}");
         ((SequenceComponent)parentContainer).addRegion(vb);
      }

      return new ComponentWrapper(parent, container, this);
   }

   public void characters(FacesContext context, ComponentWrapper current, char[] ch, int start, int length) throws IOException {
   }

   public void endElement(FacesContext context, ComponentWrapper current, String uri, String localName, String qName) throws IOException {
   }
}