package net.sf.tomp.xtcl.filter;
   
   import org.apache.commons.logging.Log;
   import org.apache.commons.logging.LogFactory;
   import org.xml.sax.SAXException;
   
   import javax.xml.transform.Transformer;
   import javax.xml.transform.sax.TransformerHandler;
   
  import java.util.Properties;
  
  /***
   * DOCUMENT ME!
   * 
   * @author tomp
   */
  public class TransformerFilterImpl extends XSLTFilter implements
          HasOutputProperties {
  
  	private static final Log log = LogFactory.getLog(TransformerFilterImpl.class);
  
      /*** DOCUMENT ME! */
      protected Transformer transformer;
  
      /*** DOCUMENT ME! */
      protected TransformerHandler handler;
  
      /*** DOCUMENT ME! */
      protected HasOutputProperties outputPropertiesListener = null;
  
      /***
       * Creates a new TransformerFilterImpl object.
       * 
       * @param handler DOCUMENT ME!
       */
      protected TransformerFilterImpl(TransformerHandler handler) {
          super(handler);
          this.handler = handler;
          transformer = handler.getTransformer();
      }
  
      /***
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
      public Transformer getTransformer() {
          return transformer;
      }
  
      /***
       * DOCUMENT ME!
       * 
       * @return DOCUMENT ME!
       */
      public Properties getOutputProperties() {
          Properties p = transformer.getOutputProperties();
  
          //System.out.println(this+" ********************** "+p);
          return p;
      }
  
      /***
       * DOCUMENT ME!
       * 
       * @param p DOCUMENT ME!
       */
      public void setOutputProperties(Properties p) {
          transformer.setOutputProperties(p);
      }
  
      /***
       * DOCUMENT ME!
       * 
       * @param l DOCUMENT ME!
       */
      public void setOutputPropertiesListener(HasOutputProperties l) {
          outputPropertiesListener = l;
      }
  
      /***
       * DOCUMENT ME!
       * 
       * @param k DOCUMENT ME!
       * @param v DOCUMENT ME!
       */
      public void setParameter(String k, Object v) {
  //    	System.out.println("TransfFilter Setting param "+k+"="+v);
          transformer.setParameter(k, v);
  
          //System.out.println("Setting param to " + this + ": "+k+"="+v);
      }
  
      ////////////////////////////////////////////////////////////////////
      // Implementation of the LexicalHandler.
      ////////////////////////////////////////////////////////////////////
  
      /***
       * Callback interface for SAX (part of LexicalHandler interface): not for
      * application use
      * 
      * @param ch DOCUMENT ME!
      * @param start DOCUMENT ME!
      * @param length DOCUMENT ME!
      * @throws SAXException DOCUMENT ME!
      */
 
     /*
      * public void startDocument() throws SAXException { super.startDocument();
      * System.out.println("%%%%% TransformerFilterImpl.startDocument sent"); }
      * public void endDocument() throws SAXException { System.out.println("%%%%%
      * TransformerFilterImpl.endDocument trying..."); super.endDocument();
      * System.out.println("%%%%% TransformerFilterImpl.endDocument sent"); }
      * public void startElement (String uri, String localName, String qName,
      * Attributes atts) throws SAXException { super.startElement(uri, localName,
      * qName, atts); System.out.println("%%%%%
      * TransformerFilterImpl.startElement="+localName); } public void endElement
      * (String uri, String localName, String qName) throws SAXException {
      * super.endElement(uri, localName, qName); System.out.println("%%%%%
      * TransformerFilterImpl.endElement="+localName); }
      */
     public void comment(char[] ch, int start, int length) throws SAXException {
         handler.comment(ch, start, length);
 
         //System.out.println("%%%%% TransformerFilterImpl.comment");
     }
 
     // No-op methods to satisfy lexical handler interface
 
     /***
      * Register the start of the DTD. Comments in the DTD are skipped because
      * they are not part of the XPath data model
      * 
      * @param name DOCUMENT ME!
      * @param publicId DOCUMENT ME!
      * @param systemId DOCUMENT ME!
      * @throws SAXException DOCUMENT ME!
      */
     public void startDTD(String name, String publicId, String systemId)
             throws SAXException {
         handler.startDTD(name, publicId, systemId);
     }
 
     /***
      * Register the end of the DTD. Comments in the DTD are skipped because they
      * are not part of the XPath data model
      * 
      * @throws SAXException DOCUMENT ME!
      */
     public void endDTD() throws SAXException {
         handler.endDTD();
     }
 
     /***
      * DOCUMENT ME!
      * 
      * @param name DOCUMENT ME!
      * @throws SAXException DOCUMENT ME!
      */
     public void startEntity(String name) throws SAXException {
         handler.startEntity(name);
     }
 
     /***
      * DOCUMENT ME!
      * 
      * @param name DOCUMENT ME!
      * @throws SAXException DOCUMENT ME!
      */
     public void endEntity(String name) throws SAXException {
         handler.endEntity(name);
     }
 
     /***
      * DOCUMENT ME!
      * 
      * @throws SAXException DOCUMENT ME!
      */
     public void startCDATA() throws SAXException {
         handler.startCDATA();
     }
 
     /***
      * DOCUMENT ME!
      * 
      * @throws SAXException DOCUMENT ME!
      */
     public void endCDATA() throws SAXException {
         handler.endCDATA();
     }
 }
 
 /*
  * The contents of this file are subject to the Mozilla Public License Version
  * 1.1 (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.mozilla.org/MPL/
  * Software distributed under the License is distributed on an "AS IS" basis,
  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
  * the specific language governing rights and limitations under the License. The
  * Original Code is: all this file. The Initial Developer of the Original Code
  * is: Tomas Pitner, Masaryk University in Brno, Czech Republic. Contributor(s):
  */