code: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you under the Apache 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.apache.org/licenses/LICENSE-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.
   */
  /*
   * $Id$
   */
  package org.apache.xml.dtm;
  
  /**
   * This interface is meant to be implemented by a client of the DTM, and allows
   * stripping of whitespace nodes.
   */
  public interface DTMWSFilter
  {
    /**
     * Do not strip whitespace child nodes of this element.
     */
    public static final short NOTSTRIP = 1;
  
    /**
     * Strip whitespace child nodes of this element.
     */
    public static final short STRIP = 2;
  
    /**
     * Inherit whitespace stripping behavior of the parent node.
     */
    public static final short INHERIT = 3;
  
    /**
     * Test whether whitespace-only text nodes are visible in the logical 
     * view of <code>DTM</code>. Normally, this function
     * will be called by the implementation of <code>DTM</code>; 
     * it is not normally called directly from
     * user code.
     * 
     * @param elementHandle int Handle of the element.
     * @return one of NOTSTRIP, STRIP, or INHERIT.
     */
    public short getShouldStripSpace(int elementHandle, DTM dtm);
    
  }
  