/*
 * Example written by Bruno Lowagie in answer to the following question:
 * http://stackoverflow.com/questions/26755315/how-can-i-convert-xhtml-nested-list-to-pdf-with-itext
 */
package sandbox.xmlworker;

import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.ElementList;
import com.itextpdf.tool.xml.XMLWorker;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import com.itextpdf.tool.xml.html.Tags;
import com.itextpdf.tool.xml.parser.XMLParser;
import com.itextpdf.tool.xml.pipeline.css.CSSResolver;
import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;
import com.itextpdf.tool.xml.pipeline.end.ElementHandlerPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import sandbox.WrapToTest;

/**
 *
 * @author Bruno Lowagie (iText Software)
 */
@WrapToTest
public class NestedListHtml {
    
    public static final String HTML = "resources/xml/list.html";
    public static final String DEST = "results/xmlworker/nested_list.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new NestedListHtml().createPdf(DEST);
    }
    
    
    public void createPdf(String file) throws IOException, DocumentException {
        
        // Parse HTML into Element list
        
        // CSS
        CSSResolver cssResolver =
                XMLWorkerHelper.getInstance().getDefaultCssResolver(true);
        
        // HTML
        HtmlPipelineContext htmlContext = new HtmlPipelineContext(null);
        htmlContext.setTagFactory(Tags.getHtmlTagProcessorFactory());
        htmlContext.autoBookmark(false);
        
        // Pipelines
        ElementList elements = new ElementList();
        ElementHandlerPipeline end = new ElementHandlerPipeline(elements, null);
        HtmlPipeline html = new HtmlPipeline(htmlContext, end);
        CssResolverPipeline css = new CssResolverPipeline(cssResolver, html);
        
        // XML Worker
        XMLWorker worker = new XMLWorker(css, true);
        XMLParser p = new XMLParser(worker);
        p.parse(new FileInputStream(HTML));
        
        // step 1
        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream(file));
        document.open();
        for (Element e : elements) {
            document.add(e);
        }
        document.add(Chunk.NEWLINE);
        Paragraph para = new Paragraph();
        for (Element e : elements) {
            para.add(e);
        }
        document.add(para);
        document.add(Chunk.NEWLINE);
        PdfPTable table = new PdfPTable(2);
        table.addCell("Nested lists don't work in a cell");
        PdfPCell cell = new PdfPCell();
        for (Element e : elements) {
            cell.addElement(e);
        }
        table.addCell(cell);
        document.add(table);
        
        document.close();
    }
        
}