/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cocoon.serialization;
import java.io.OutputStream;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.cocoon.caching.CacheableProcessingComponent;
import org.apache.excalibur.source.SourceValidity;
import org.apache.excalibur.source.impl.validity.NOPValidity;
import org.xml.sax.SAXException;
import com.lowagie.text.Document;
import com.lowagie.text.PageSize;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.xml.SAXiTextHandler;
/**
* @author <a href="mailto:tcurdt@dff.st">Torsten Curdt</a>
* @version CVS $Id: iTextSerializer.java,v 1.7 2004/03/05 13:01:57 bdelacretaz Exp $
*/
final public class iTextSerializer extends AbstractSerializer implements Configurable, CacheableProcessingComponent {
private final static boolean LANDSCAPE = true;
private final static boolean PORTRAIT = false;
private String mimetype = "application/pdf";
private boolean setContentLength = true;
private Rectangle pageSize;
private boolean pageOrientation;
private Document document = null;
private Rectangle getPageSize(final String s) throws ConfigurationException {
// TC: we could use reflection here instead
if ("letter".equalsIgnoreCase(s)) {
return PageSize.LETTER;
}
else if ("a4".equalsIgnoreCase(s)) {
return PageSize.A4;
}
else if ("a5".equalsIgnoreCase(s)) {
return PageSize.A5;
}
else {
throw new ConfigurationException("page size [" + String.valueOf(s) + "] is not yet recognized");
}
}
private boolean getOrientation(final String o) throws ConfigurationException {
if ("portrait".equalsIgnoreCase(o)) {
return PORTRAIT;
}
else if ("landscape".equalsIgnoreCase(o)) {
return LANDSCAPE;
}
else {
throw new ConfigurationException("orientation must be either portrait or landscape but is [" + String.valueOf(o) + "]");
}
}
public void configure(Configuration conf) throws ConfigurationException {
this.setContentLength = conf.getChild("set-content-length").getValueAsBoolean(true);
this.mimetype = conf.getAttribute("mime-type");
this.pageSize = getPageSize(conf.getAttribute("page-size","A4"));
this.pageOrientation = getOrientation(conf.getAttribute("page-orientation","portrait"));
if (pageOrientation == LANDSCAPE) {
pageSize = pageSize.rotate();
}
getLogger().debug("iTextSerializer mime-type:" + mimetype);
}
public String getMimeType() {
return mimetype;
}
public void startDocument() throws SAXException {
getLogger().debug("starting PDF document");
super.startDocument();
}
public void endDocument() throws SAXException {
super.endDocument();
getLogger().debug("finished PDF document");
}
public void setOutputStream(OutputStream out) {
this.document = new Document(this.pageSize);
try {
PdfWriter.getInstance(document, out);
}
catch(Exception e) {
getLogger().error("cannot create pdf writer instance",e);
//TC: FIXME! shouldn't we throw an exception here? what kind?
}
SAXiTextHandler handler = new SAXiTextHandler(document);
handler.setControlOpenClose(true);
this.contentHandler = handler;
}
public java.io.Serializable getKey() {
return "1";
}
public SourceValidity getValidity() {
return NOPValidity.SHARED_INSTANCE;
}
public boolean shouldSetContentLength() {
return this.setContentLength;
}
}