code: /**
   * boilerpipe
   *
   * Copyright (c) 2009, 2014 Christian Kohlschütter
   *
   * The author 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.
   */
  package com.kohlschutter.boilerpipe.sax;
  
  import org.xml.sax.Attributes;
  import org.xml.sax.SAXException;
  
  /**
   * Defines an action that is to be performed whenever a particular tag occurs during HTML parsing.
   */
  public interface TagAction {
  
    boolean start(final BoilerpipeHTMLContentHandler instance, final String localName,
        final String qName, final Attributes atts) throws SAXException;
  
    boolean end(final BoilerpipeHTMLContentHandler instance, final String localName,
        final String qName) throws SAXException;
  
    boolean changesTagLevel();
  }