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Parses XML to PDF, with CSS support, using iText
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/*
 * $Id: 2ffcb78e182b4d0472210b6cf6d89be2ddc3df3c $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2015 iText Group NV
 * Authors: Bruno Lowagie, 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
 * ITEXT GROUP. ITEXT GROUP 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, a
 * covered work 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:
 * [email protected]
 */
 package com.itextpdf.tool.xml.util;

import java.util.ArrayList;
import java.util.List;

import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.html.HTML;

/**
 * Util class for everything related to a ParentTree of a Tag
 * 
 * 
 * @author Jeroen Nouws
 *
 */
public class ParentTreeUtil {
	
    /**
     * creates a parentTree of all parents of a given Tag
     * 
     * @param t Tag the tag where you want to know it's parentTree of
     * @return parentTree a arrayList containing the parents of Tag t
     */
    public List getParentTree(Tag t){
        List parentTree = new ArrayList();
        Tag parent = t.getParent();
        while(parent!=null&&!(parent.getName().equals(HTML.Tag.BODY))){
            parentTree.add(parent.getName());
            parent = parent.getParent();
        }
        return parentTree;
    }

    /**
     * creates a parentTree of all parent Tag objects of a given Tag
     * 
     * @param tag Tag the tag where you want to know it's parentTree of
     * @param tree
     * @return parentTree arrayList containing the parent tags of Tag t
     */
    public List getParentTagTree(final Tag tag, final List tree) {
        List parentTree = new ArrayList();
        Tag parent = tag.getParent();
        while (parent != null && !(parent.getName().equals(HTML.Tag.HTML))) {
            parentTree.add(parent);
            parent = parent.getParent();
        }
        return parentTree;
    }
}