package org.apache.maven.doxia.book.services.renderer.docbook;
   
   /*
    * 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.
   */
  
  import java.io.Writer;
  
  import javax.swing.text.MutableAttributeSet;
  import javax.swing.text.html.HTML.Tag;
  
  import org.apache.maven.doxia.module.docbook.DocBookSink;
  
  /**
   * An Docbook Sink that doesn't write out head or body elements for every section of a book, and has some convenience
   * methods relating to the construction of a Doxia Book.
   *
   * @author Dave Syer
   * @version $Id: DocBookBookSink.java 808201 2009-08-26 22:04:43Z vsiveton $
   * @since 1.1
   */
  public class DocBookBookSink
      extends DocBookSink
  {
      /** Indicates if we're inside a head. */
      private boolean hasHead = false;
  
      /**
       * Construct a new DocBookSink.
       *
       * @param out the writer for the sink.
       */
      public DocBookBookSink( Writer out )
      {
          super( out );
  
          setSystemId( "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" );
          setPublicId( "-//OASIS//DTD DocBook V4.4//EN" );
      }
  
      // ----------------------------------------------------------------------
      //
      // ----------------------------------------------------------------------
  
      /**
       * {@inheritDoc}
       *
       * Does nothing because we don't want the header from each document to crop up in the middle of a book.
       */
      public void head()
      {
          // noop
      }
  
      /**
       * {@inheritDoc}
       *
       * Does nothing because we don't want the header from each document to crop up in the middle of a book.
       */
      public void head_()
      {
          // noop
      }
  
      /**
       * {@inheritDoc}
       *
       * Marks the skip flag to true so that this element's text is not emitted by the base class.
       */
      public void title()
      {
          setSkip( true );
      }
  
      /**
       * {@inheritDoc}
       *
       * Marks the skip flag to false so that rendering can resume.
       */
      public void title_()
      {
          setSkip( false );
      }
  
     /**
      * {@inheritDoc}
      *
      * Marks the skip flag to true so that this element's text is not emitted by the base class.
      */
     public void author()
     {
         setSkip( true );
     }
 
     /**
      * {@inheritDoc}
      *
      * Marks the skip flag to false so that rendering can resume.
      */
     public void author_()
     {
         setSkip( false );
     }
 
     /**
      * {@inheritDoc}
      *
      * Does nothing because we don't want the header from each document to crop up in the middle of a book.
      */
     public void body()
     {
         // noop
     }
 
     /**
      * {@inheritDoc}
      *
      * Does nothing because we don't want the header from each document to crop up in the middle of a book.
      */
     public void body_()
     {
         // noop
     }
 
     /**
      * Emit the start tag for the book.
      *
      * @see org.apache.maven.doxia.module.docbook.DocbookMarkup#BOOK_TAG
      */
     public void book()
     {
         init();
 
         MutableAttributeSet att = writeXmlHeader( "book" );
 
         writeStartTag( BOOK_TAG, att );
 
     }
 
     /**
      * Emit the end tag for the book.
      *
      * @see org.apache.maven.doxia.module.docbook.DocbookMarkup#BOOK_TAG
      */
     public void book_()
     {
         writeEndTag( BOOK_TAG );
         flush();
     }
 
     /** If no header matter has yet been encountered emit the book info start tag. */
     private void bookHead()
     {
         if ( !hasHead )
         {
             writeStartTag( BOOKINFO_TAG );
             hasHead = true;
         }
     }
 
     /**
      * If some header matter has been encountered emit the book info end tag.
      */
     public void bookHead_()
     {
         if ( hasHead )
         {
             writeEndTag( BOOKINFO_TAG );
             hasHead = false;
         }
     }
 
     /**
      * Emit the title start tag for the whole book.
      */
     public void bookTitle()
     {
         bookHead();
         writeStartTag( Tag.TITLE );
     }
 
     /**
      * Emit the title end tag for the whole book.
      */
     public void bookTitle_()
     {
         super.title_();
     }
 
     /**
      * Emit the author start tag for the whole book.
      */
     public void bookAuthor()
     {
         bookHead();
         super.author();
     }
 
    /**
     * Emit the author end tag for the whole book.
     */
    public void bookAuthor_()
     {
         super.author_();
     }
 
    /**
     * Emit the date start tag for the whole book.
     */
    public void bookDate()
     {
         bookHead();
         super.date();
     }
 
     /**
      * Emit the date end tag for the whole book.
      */
     public void bookDate_()
     {
         super.date_();
     }
 
     /**
      * Emit the chapter start tag.
      */
     public void chapter()
     {
         writeStartTag( CHAPTER_TAG );
     }
 
     /**
      * Emit the chapter end tag.
      */
     public void chapter_()
     {
         writeEndTag( CHAPTER_TAG );
     }
 
     /**
      * Emit the chapter title start tag.
      */
     public void chapterTitle()
     {
         writeStartTag( Tag.TITLE );
     }
 
     /**
      * Emit the chapter title end tag.
      */
     public void chapterTitle_()
     {
         writeEndTag( Tag.TITLE );
     }
 }