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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.
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/**
 * Copyright (C) 2011-2015 The XDocReport Team 
 *
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package fr.opensagres.xdocreport.itext.extension;

import java.util.ArrayList;

import com.lowagie.text.Chunk;
import com.lowagie.text.MarkedSection;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Rectangle;
import com.lowagie.text.Section;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPTable;

public class ExtendedSection
    extends Section
{

    private PdfPCell cell;

    private com.lowagie.text.Paragraph computedTitle;

    private Paragraph bookmarkTitleParagraph;

    public ExtendedSection( Paragraph title, int numberDepth )
    {
        super( title, numberDepth );
    }

    @Override
    public Paragraph getTitle()
    {
        if ( computedTitle == null )
        {
            bookmarkTitleParagraph =
                ExtendedSection.ancestorConstructTitle( getParagraphFactory(), title, numbers, numberDepth, numberStyle );
            computedTitle =
                ExtendedSection.constructTitle( getParagraphFactory(), bookmarkTitleParagraph, numbers, numberDepth,
                                                numberStyle, cell );
        }
        return computedTitle;
    }

    @Override
    public Paragraph getBookmarkTitle()
    {
        return bookmarkTitleParagraph;
    }

    public Section addSection( float indentation, Paragraph title, int numberDepth )
    {
        if ( isAddedCompletely() )
        {
            throw new IllegalStateException( "This LargeElement has already been added to the Document." );
        }
        Section section = new ExtendedSection( title, numberDepth );
        section.setIndentation( indentation );
        add( section );
        return section;
    }

    public MarkedSection addMarkedSection()
    {
        MarkedSection section = new MarkedSection( new ExtendedSection( null, numberDepth + 1 ) );
        add( section );
        return section;
    }

    public static Paragraph constructTitle( IParagraphFactory factory, Paragraph ancestorTitle, ArrayList numbers,
                                            int numberDepth, int numberStyle, PdfPCell cell )
    {
        if ( ancestorTitle != null && cell != null )
        {
            Paragraph newTitle = factory.createParagraph();
            PdfPTable table = new PdfPTable( 1 );
            table.setWidthPercentage( 100f );
            cell.addElement( ancestorTitle );
            table.addCell( cell );
            newTitle.add( table );
            return newTitle;
        }
        return ancestorTitle;
    }

    /**
     * Constructs a Paragraph that will be used as title for a Section or Chapter.
     * 
     * @param title the title of the section
     * @param numbers a list of sectionnumbers
     * @param numberDepth how many numbers have to be shown
     * @param numberStyle the numbering style
     * @return a Paragraph object
     * @since iText 2.0.8
     */
    public static Paragraph ancestorConstructTitle( IParagraphFactory factory, Paragraph title, ArrayList numbers,
                                                    int numberDepth, int numberStyle )
    {
        if ( title == null )
        {
            return null;
        }

        int depth = Math.min( numbers.size(), numberDepth );
        if ( depth < 1 )
        {
            return title;
        }
        StringBuffer buf = new StringBuffer( " " );
        for ( int i = 0; i < depth; i++ )
        {
            buf.insert( 0, "." );
            buf.insert( 0, ( (Integer) numbers.get( i ) ).intValue() );
        }
        if ( numberStyle == NUMBERSTYLE_DOTTED_WITHOUT_FINAL_DOT )
        {
            buf.deleteCharAt( buf.length() - 2 );
        }
        Paragraph result = factory.createParagraph( title );
        result.add( 0, new Chunk( buf.toString(), title.getFont() ) );
        return result;
    }

    public PdfPCell getPdfPCell()
    {
        if ( cell != null )
        {
            return cell;
        }
        cell = createPdfPCell();
        return cell;
    }

    private synchronized PdfPCell createPdfPCell()
    {
        if ( cell != null )
        {
            return cell;
        }
        PdfPCell cell = new PdfPCell();
        cell.setBorder( Rectangle.NO_BORDER );
        cell.setPadding( 0 );
        return cell;
    }

    protected IParagraphFactory getParagraphFactory()
    {
        return ParagraphFactory.getDefault();
    }
}