itextpdf-master/xmlworker/src/test/java/examples/XMLWorkerHelperExample.java
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
 * Authors: Balder Van Camp, Emiel Ackermann, et al.
 *
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 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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package examples;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.List;

import org.junit.Test;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.ElementHandler;
import com.itextpdf.tool.xml.Writable;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import com.itextpdf.tool.xml.pipeline.WritableElement;

/**
 * @author itextpdf.com
 *
 */
public class XMLWorkerHelperExample extends Setup {

	/**
	 * Parse html to a PDF.
	 * With the XMLWorkerHelper this is done in no time. Create a Document and a
	 * PdfWriter. Don't forget to open the document and call
	 * <code>XMLWorkerHelper.getInstance().parseXHtml()</code>. This test takes
	 * html from <code>columbus.html</code>. This document contains &lt;img&gt;
	 * tags with relative src attributes. You'll see that the images are not
	 * added, unless they are absolute url's or file paths.
	 *
	 * @throws DocumentException
	 * @throws IOException
	 */
	@Test
	public void defaultSetup() throws DocumentException, IOException {
		Document doc = new Document(PageSize.A4);
		PdfWriter instance = PdfWriter.getInstance(doc, new FileOutputStream(new File(
				"./src/test/resources/examples/columbus.pdf")));
		doc.open();
		XMLWorkerHelper.getInstance().parseXHtml(instance, doc,
				XMLWorkerHelperExample.class.getResourceAsStream("columbus.html"), Charset.defaultCharset());
		doc.close();
	}

	/**
	 * Create lists of {@link Element} instead of a document
	 * @throws IOException
	 */
	@Test
	public void defaultSetupWithoutDocument() throws IOException {
		XMLWorkerHelper.getInstance().parseXHtml(new ElementHandler() {

			public void add(final Writable w) {
				if (w instanceof WritableElement) {
					List<Element> elements = ((WritableElement)w).elements();
					// do something with the lists of elements
				}

			}
		}, XMLWorkerHelperExample.class.getResourceAsStream("columbus.html"), Charset.defaultCharset());
	}
}
