/*
* $Id: SvgPipeline.java 341 2012-06-18 14:38:54Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2012 1T3XT BVBA
* Authors: VVB, 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 1T3XT,
* 1T3XT 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: sales@itextpdf.com
*/
package com.itextpdf.tool.xml.svg;
import java.util.List;
import com.itextpdf.text.Element;
import com.itextpdf.tool.xml.Pipeline;
import com.itextpdf.tool.xml.PipelineException;
import com.itextpdf.tool.xml.ProcessObject;
import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.WorkerContext;
import com.itextpdf.tool.xml.Writable;
import com.itextpdf.tool.xml.exceptions.LocaleMessages;
import com.itextpdf.tool.xml.exceptions.NoTagProcessorException;
import com.itextpdf.tool.xml.html.TagProcessor;
import com.itextpdf.tool.xml.pipeline.AbstractPipeline;
import com.itextpdf.tool.xml.pipeline.html.NoStackException;
import com.itextpdf.tool.xml.pipeline.html.StackKeeper;
import com.itextpdf.tool.xml.svg.tags.Graphic;
public class SvgPipeline extends AbstractPipeline<SvgPipelineContext>{
private final SvgPipelineContext hpc;
public SvgPipeline(final SvgPipelineContext hpc, final Pipeline<?> next){
super(next);
this.hpc = hpc;
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.pipeline.Pipeline#open(com.itextpdf.tool.
* xml.Tag, com.itextpdf.tool.xml.pipeline.ProcessObject)
*/
@Override
public Pipeline<?> open(final WorkerContext context, final Tag t, final ProcessObject po) throws PipelineException {
SvgPipelineContext hcc = getLocalContext(context);
try {
TagProcessor tp = hcc.resolveProcessor(t.getName(), t.getNameSpace());
if (tp.isStackOwner()) {
hcc.addFirst(new StackKeeper(t));
}
List<Element> content = tp.startElement(context, t);
if (content.size() > 0) {
if (tp.isStackOwner()) {
StackKeeper peek;
try {
peek = hcc.peek();
for (Element elem : content) {
peek.add(elem);
}
} catch (NoStackException e) {
throw new PipelineException(String.format(LocaleMessages.STACK_404, t.toString()), e);
}
} else {
if(!hcc.isDefinition()){
for (Element elem : content) {
po.add((Graphic)elem);
}
}
}
}
} catch (NoTagProcessorException e) {
if (!hcc.acceptUnknown()) {
throw e;
}
}
return getNext();
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.pipeline.Pipeline#content(com.itextpdf.tool
* .xml.Tag, java.lang.String, com.itextpdf.tool.xml.pipeline.ProcessObject)
*/
@Override
public Pipeline<?> content(final WorkerContext context, final Tag t, final String text, final ProcessObject po)
throws PipelineException {
SvgPipelineContext hcc = getLocalContext(context);
TagProcessor tp;
try {
tp = hcc.resolveProcessor(t.getName(), t.getNameSpace());
// String ctn = null;
// if (null != hcc.charSet()) {
// try {
// ctn = new String(b, hcc.charSet().name());
// } catch (UnsupportedEncodingException e) {
// throw new RuntimeWorkerException(LocaleMessages.getInstance().getMessage(
// LocaleMessages.UNSUPPORTED_CHARSET), e);
// }
// } else {
// ctn = new String(b);
// }
List<Element> elements = tp.content(context, t, text);
if (elements.size() > 0) {
StackKeeper peek;
try {
peek = hcc.peek();
for (Element e : elements) {
peek.add(e);
}
} catch (NoStackException e) {
if(!hcc.isDefinition()){
for (Element elem : elements) {
po.add((Writable)elem);
}
}
// po.add(writableElement);
}
}
} catch (NoTagProcessorException e) {
if (!hcc.acceptUnknown()) {
throw e;
}
}
return getNext();
}
@Override
public Pipeline<?> init(final WorkerContext context) throws PipelineException {
try {
SvgPipelineContext clone = hpc.clone();
context.put(getContextKey(), clone);
} catch (CloneNotSupportedException e) {
String message = String.format(LocaleMessages.getInstance().getMessage(LocaleMessages.UNSUPPORTED_CLONING),
hpc.getClass().toString());
throw new PipelineException(message, e);
}
return getNext();
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.pipeline.Pipeline#close(com.itextpdf.tool
* .xml.Tag, com.itextpdf.tool.xml.pipeline.ProcessObject)
*/
@Override
public Pipeline<?> close(final WorkerContext context, final Tag t, final ProcessObject po) throws PipelineException {
SvgPipelineContext hcc = getLocalContext(context);
TagProcessor tp;
List<Element> elements = null;
try {
tp = hcc.resolveProcessor(t.getName(), t.getNameSpace());
if (tp.isStackOwner()) {
// remove the element from the StackKeeper Queue if end tag is found
StackKeeper tagStack;
try {
tagStack = hcc.poll();
} catch (NoStackException e) {
throw new PipelineException(String.format(
LocaleMessages.getInstance().getMessage(LocaleMessages.STACK_404), t.toString()), e);
}
elements = tp.endElement(context, t, tagStack.getElements());
} else {
elements = tp.endElement(context, t, hcc.currentContent());
hcc.currentContent().clear();
}
if (elements != null && elements.size() > 0) {
try {
StackKeeper stack = hcc.peek();
for (Element elem : elements) {
stack.add(elem);
}
} catch (NoStackException e) {
//don't write definities, part of defs
if(!hcc.isDefinition()){
for (Element elem : elements) {
po.add((Writable)elem);
}
}
}
}
} catch (NoTagProcessorException e) {
if (!hcc.acceptUnknown()) {
throw e;
}
}
return getNext();
}
}