code: package com.sun.xml.xsom.impl.parser.state;
  
  import org.xml.sax.Attributes;
  import org.xml.sax.SAXException;
  
  /**
   * 
   * 
   * @author Kohsuke Kawaguchi (kk@kohsuke.org)
   */
  public interface NGCCEventSource {
      /**
       * Replaces an old handler with a new handler, and returns
       * ID of the EventReceiver thread.
       */
      int replace( NGCCEventReceiver _old, NGCCEventReceiver _new );
      
      /** Sends an enter element event to the specified EventReceiver thread. */
      void sendEnterElement( int receiverThreadId, String uri, String local, String qname, Attributes atts ) throws SAXException;
  
      void sendLeaveElement( int receiverThreadId, String uri, String local, String qname ) throws SAXException;
      void sendEnterAttribute( int receiverThreadId, String uri, String local, String qname ) throws SAXException;
      void sendLeaveAttribute( int receiverThreadId, String uri, String local, String qname ) throws SAXException;
      void sendText( int receiverThreadId, String value ) throws SAXException;
  }
  