/*
    * Copyright 2005-2007 The Kuali 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/ecl2.php
   * 
   * 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.kuali.rice.core.util.xml;
  
  import java.util.Date;
  
  import org.jdom.CDATA;
  import org.jdom.Element;
  import org.jdom.Namespace;
  import org.kuali.rice.core.util.RiceConstants;
  
  /**
   * A helper class which helps with building the XML for objects.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class XmlRenderer {
  
      private Namespace namespace;
      
      public XmlRenderer() {}
      
      public XmlRenderer(Namespace namespace) {
          this.namespace = namespace;
      }
      
      public Element renderElement(Element parent, String elementName) {
          Element element = new Element(elementName, namespace);
          if (parent != null) {
              parent.addContent(element);
          }
          return element;
      }
      
      public Element renderTextElement(Element parent, String elementName, String text) {
          Element element = null;
          if (text != null) {
              element = renderElement(parent, elementName);
              element.setText(text);
          }
          return element;
      }
      
      public Element renderBooleanElement(Element parent, String elementName, Boolean bool, boolean defaultValue) {
          if (bool == null) {
              bool = new Boolean(defaultValue);
          }
          return renderTextElement(parent, elementName, (bool.booleanValue() ? "true" : "false"));   
      }
      
      public Element renderDateElement(Element parent, String elementName, Date date) {
          Element element = null;
          if (date != null) {
              element = renderTextElement(parent, elementName, RiceConstants.getDefaultDateFormat().format(date));
          }
          return element;
      }
      
      public void renderAttribute(Element element, String attributeName, String attributeValue) {
          element.setAttribute(attributeName, attributeValue);
      }
      
      public Element renderCDATAElement(Element parent, String elementName, String data) {
      	Element element = null;
          if (data != null) {
              element = renderElement(parent, elementName);
              element.addContent(new CDATA(data));
          }
          return element;
      }
  
  }