using System;
using iTextSharp.text.error_messages;

/*
 * This file is part of the iText project.
 * Copyright (c) 1998-2012 1T3XT BVBA
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * 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 the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * you must retain the producer line in every PDF that is created or manipulated
 * using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */

namespace iTextSharp.text {

    /**
    * Chapter with auto numbering.
    *
    * @author Michael Niedermair
    */
    public class ChapterAutoNumber : Chapter {

        /**
        * Is the chapter number already set?
        * @since	2.1.4
        */
        protected bool numberSet = false;

        /**
        * Create a new object.
        *
        * @param para     the Chapter title (as a <CODE>Paragraph</CODE>)
        */
        public ChapterAutoNumber(Paragraph para) : base(para, 0) {
        }

        /**
        * Create a new objet.
        * 
        * @param title     the Chapter title (as a <CODE>String</CODE>)
        */
        public ChapterAutoNumber(String title) : base(title, 0) {
        }

        /**
        * Create a new section for this chapter and ad it.
        *
        * @param title  the Section title (as a <CODE>String</CODE>)
        * @return Returns the new section.
        */
        public override Section AddSection(String title) {
    	    if (AddedCompletely) {
    		    throw new InvalidOperationException(MessageLocalization.GetComposedMessage("this.largeelement.has.already.been.added.to.the.document"));
    	    }
            return AddSection(title, 2);
        }

        /**
        * Create a new section for this chapter and add it.
        *
        * @param title  the Section title (as a <CODE>Paragraph</CODE>)
        * @return Returns the new section.
        */
        public override Section AddSection(Paragraph title) {
    	    if (AddedCompletely) {
    		    throw new InvalidOperationException(MessageLocalization.GetComposedMessage("this.largeelement.has.already.been.added.to.the.document"));
    	    }
            return AddSection(title, 2);
        }

        /**
        * Changes the Chapter number.
        * @param	number	the new chapter number
        * @since 2.1.4
        */
        public int SetAutomaticNumber(int number) {
    	    if (!numberSet) {
        	    number++;
        	    base.SetChapterNumber(number);
        	    numberSet = true;
    	    }
		    return number;
        }
    }
}
