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Parses XML to PDF, with CSS support, using iText
There is a newer version: 5.5.13.4
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Balder Van Camp, Emiel Ackermann, 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.html;

import com.itextpdf.text.Chunk;
import com.itextpdf.text.Element;
import com.itextpdf.text.FontProvider;
import com.itextpdf.text.List;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfDiv;
import com.itextpdf.text.pdf.draw.LineSeparator;
import com.itextpdf.text.Image;
import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.css.apply.*;
import com.itextpdf.tool.xml.html.pdfelement.HtmlCell;
import com.itextpdf.tool.xml.html.pdfelement.NoNewLineParagraph;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;
import com.itextpdf.tool.xml.pipeline.html.ImageProvider;
import com.itextpdf.tool.xml.pipeline.html.NoImageProviderException;
import com.itextpdf.tool.xml.pipeline.html.UrlLinkResolver;

import java.util.HashMap;
import java.util.Map;

/**
 * Applies CSS to an Element using the appliers from the com.itextpdf.tool.xml.css.apply.
 *
 * @author redlab_b
 *
 *
 */
public class CssAppliersImpl implements CssAppliers {

	/*
	 * private static CssAppliersImpl myself = new CssAppliersImpl();
	 *
	 * public static CssAppliersImpl getInstance() { return myself; }
	 */
    private Map, CssApplier> map;
	/**
	 *
	 */
	public CssAppliersImpl() {
            map = new HashMap, CssApplier>();
            map.put(Chunk.class, new ChunkCssApplier(null));
            map.put(Paragraph.class, new ParagraphCssApplier(this));
            map.put(NoNewLineParagraph.class, new NoNewLineParagraphCssApplier());
            map.put(HtmlCell.class, new HtmlCellCssApplier());
            map.put(List.class, new ListStyleTypeCssApplier());
            map.put(LineSeparator.class, new LineSeparatorCssApplier());
            map.put(Image.class, new ImageCssApplier());
            map.put(PdfDiv.class, new DivCssApplier());
	}

        public CssAppliersImpl(FontProvider fontProvider) {
            this();
            ((ChunkCssApplier) map.get(Chunk.class)).setFontProvider(fontProvider);
	}
        
        public void putCssApplier(Class s, CssApplier c) {
            map.put(s, c);
        }
        
        public CssApplier getCssApplier(Class s) {
            return map.get(s);
        }

	/* (non-Javadoc)
	 * @see com.itextpdf.tool.xml.html.CssAppliers#apply(com.itextpdf.text.Element, com.itextpdf.tool.xml.Tag, com.itextpdf.tool.xml.css.apply.MarginMemory, com.itextpdf.tool.xml.css.apply.PageSizeContainable, com.itextpdf.tool.xml.pipeline.html.ImageProvider)
	 */
	public Element apply(Element e, final Tag t, final MarginMemory mm, final PageSizeContainable psc, final HtmlPipelineContext ctx) {
            CssApplier c = null;
            for (Map.Entry, CssApplier> entry : map.entrySet()) {
                if (entry.getKey().isInstance(e)) {
                    c = entry.getValue();
                    break;
                }
            }
            if (c == null) {
                throw new RuntimeException();
            }
            e = c.apply(e, t, mm, psc, ctx);
            return e;
	}

	/* (non-Javadoc)
	 * @see com.itextpdf.tool.xml.html.CssAppliers#apply(com.itextpdf.text.Element, com.itextpdf.tool.xml.Tag, com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext)
	 */
	public Element apply(final Element e, final Tag t, final HtmlPipelineContext ctx) {
		return this.apply(e, t, ctx, ctx, ctx);
	}

	public ChunkCssApplier getChunkCssAplier() {
        return (ChunkCssApplier) map.get(Chunk.class);
    }

    public void setChunkCssAplier(final ChunkCssApplier chunkCssAplier) {
        map.put(Chunk.class, chunkCssAplier);
    }

    public CssAppliers clone() {
        CssAppliersImpl clone = getClonedObject();
        clone.map = new HashMap, CssApplier>(this.map);
        return clone;
    }
    
    protected CssAppliersImpl getClonedObject() {
        return new CssAppliersImpl();
    }
}