content: /*
   * Copyright (c) 2000 World Wide Web Consortium,
   * (Massachusetts Institute of Technology, Institut National de
   * Recherche en Informatique et en Automatique, Keio University). All
   * Rights Reserved. This program is distributed under the W3C's Software
   * Intellectual Property License. This program is distributed in the
   * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
   * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
   * PURPOSE. See W3C License http://www.w3.org/Consortium/Legal/ for more
   * details.
   */
  
  package org.w3c.dom.smil;
  
  import org.w3c.dom.NodeList;
  
  /**
   *  This is a placeholder - subject to change. This represents generic 
   * timelines. 
   */
  public interface ElementTimeContainer extends ElementTime {
      /**
       *  A NodeList that contains all timed childrens of this node. If there are
       *  no timed children, the <code>Nodelist</code> is empty.  An iterator 
       * is more appropriate here than a node list but it requires Traversal 
       * module support. 
       */
      public NodeList getTimeChildren();
  
      /**
       *  Returns a list of child elements active at the specified invocation. 
       * @param instant  The desired position on the local timeline in 
       *   milliseconds. 
       * @return  List of timed child-elements active at instant. 
       */
      public NodeList getActiveChildrenAt(float instant);
  
  }
  
  