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Parses XML to PDF, with CSS support, using iText
/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 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 java.util.ArrayList;
import java.util.List;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.WritableDirectElement;
import com.itextpdf.text.log.Level;
import com.itextpdf.text.log.Logger;
import com.itextpdf.text.log.LoggerFactory;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.NoCustomContextException;
import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.WorkerContext;
import com.itextpdf.tool.xml.exceptions.LocaleMessages;
import com.itextpdf.tool.xml.exceptions.RuntimeWorkerException;
import com.itextpdf.tool.xml.html.pdfelement.NoNewLineParagraph;
/**
* @author redlab_b
*
*/
public class Anchor extends AbstractTagProcessor {
private static final Logger LOGGER = LoggerFactory.getLogger(Anchor.class);
/*
* (non-Javadoc)
*
* @see
* com.itextpdf.tool.xml.TagProcessor#content(com.itextpdf.tool.xml.Tag,
* java.util.List, com.itextpdf.text.Document, java.lang.String)
*/
@Override
public List content(final WorkerContext ctx, final Tag tag, final String content) {
return textContent(ctx, tag, content);
}
/*
* (non-Javadoc)
*
* @see
* com.itextpdf.tool.xml.TagProcessor#endElement(com.itextpdf.tool.xml.Tag,
* java.util.List, com.itextpdf.text.Document)
*/
@Override
public List end(final WorkerContext ctx, final Tag tag, final List currentContent) {
try {
final String name = tag.getAttributes().get(HTML.Attribute.NAME);
List elems = new ArrayList(0);
if (currentContent.size() > 0) {
NoNewLineParagraph p = new NoNewLineParagraph();
String url = tag.getAttributes().get(HTML.Attribute.HREF);
for (Element e : currentContent) {
if (e instanceof Chunk) {
if (null != url) {
if (url.startsWith("#")) {
if (LOGGER.isLogging(Level.TRACE)) {
LOGGER.trace(String.format(LocaleMessages.getInstance().getMessage(LocaleMessages.A_LOCALGOTO), url));
}
((Chunk) e).setLocalGoto(url.replaceFirst("#", ""));
} else {
// TODO check url validity?
if (null != getHtmlPipelineContext(ctx).getLinkProvider() && !url.startsWith("http")) {
String root = getHtmlPipelineContext(ctx).getLinkProvider().getLinkRoot();
if (root.endsWith("/") && url.startsWith("/")) {
root = root.substring(0, root.length() - 1);
}
url = root + url;
}
if (LOGGER.isLogging(Level.TRACE)) {
LOGGER.trace(String.format(LocaleMessages.getInstance().getMessage(LocaleMessages.A_EXTERNAL), url));
}
((Chunk) e).setAnchor(url);
}
} else if (null != name) {
((Chunk) e).setLocalDestination(name);
if (LOGGER.isLogging(Level.TRACE)) {
LOGGER.trace(String.format(LocaleMessages.getInstance().getMessage(LocaleMessages.A_SETLOCALGOTO), name));
}
}
}
p.add(e);
}
elems.add(getCssAppliers().apply(p, tag, getHtmlPipelineContext(ctx)));
} else
// !currentContent > 0 ; An empty "a" tag has been encountered.
// we're using an anchor space hack here. without the space, reader
// does
// not jump to destination
if (null != name) {
if (LOGGER.isLogging(Level.TRACE)) {
LOGGER.trace(String.format(LocaleMessages.getInstance().getMessage(LocaleMessages.SPACEHACK), name));
}
elems.add(new WritableDirectElement() {
public void write(final PdfWriter writer, final Document doc) throws DocumentException {
ColumnText c = new ColumnText(writer.getDirectContent());
float verticalPosition = writer.getVerticalPosition(false);
c.setSimpleColumn(new Phrase(new Chunk(" ").setLocalDestination(name)), 1,
verticalPosition - 5, 6, verticalPosition, 5, Element.ALIGN_LEFT);
try {
c.go();
} catch (DocumentException e) {
throw new RuntimeWorkerException(e);
}
}
});
/*
* PdfWriter writer = configuration.getWriter(); ColumnText c =
* new ColumnText(writer.getDirectContent());
* c.setSimpleColumn(new Phrase(dest), 1,
* writer.getVerticalPosition(false), 1,
* writer.getVerticalPosition(false), 5, Element.ALIGN_LEFT);
* try { c.go(); } catch (DocumentException e) { throw new
* RuntimeWorkerException(e); }
*/
}
return elems;
} catch (NoCustomContextException e) {
throw new RuntimeWorkerException(LocaleMessages.getInstance().getMessage(LocaleMessages.NO_CUSTOM_CONTEXT), e);
}
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.TagProcessor#isStackOwner()
*/
@Override
public boolean isStackOwner() {
return true;
}
}