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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
package com.sun.star.report.pentaho.parser.rpt;
import com.sun.star.report.OfficeToken;
import com.sun.star.report.pentaho.OfficeNamespaces;
import com.sun.star.report.pentaho.model.ImageElement;
import com.sun.star.report.pentaho.parser.ElementReadHandler;
import com.sun.star.report.pentaho.parser.xlink.XLinkReadHandler;
import org.jfree.report.expressions.FormulaExpression;
import org.jfree.report.structure.Element;
import org.pentaho.reporting.libraries.xmlns.parser.IgnoreAnyChildReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Deals with Image-content. There are two ways to specify the image;
* as formula or as static image data.
*
* @author Thomas Morgner
*/
public class ImageReadHandler extends ElementReadHandler
{
private final ImageElement contentElement;
private XLinkReadHandler xLinkReadHandler;
public ImageReadHandler()
{
contentElement = new ImageElement();
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs) throws SAXException
{
super.startParsing(attrs);
final String formula = attrs.getValue(OfficeNamespaces.OOREPORT_NS, "formula");
// final String preserveIRI = attrs.getValue(OfficeNamespaces.OOREPORT_NS, OfficeToken.PRESERVE_IRI);
if (formula != null && formula.length() != 0)
{
// now, the evaulated content ends up in the 'content' attribute of the
// element.
final FormulaExpression valueExpression = new FormulaExpression();
valueExpression.setFormula(formula);
contentElement.setFormula(valueExpression);
}
contentElement.setNamespace(OfficeNamespaces.FORM_NS);
contentElement.setType(OfficeToken.IMAGE);
}
/**
* Returns the handler for a child element.
*
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final Attributes atts)
throws SAXException
{
if (OfficeNamespaces.DRAWING_NS.equals(uri) && OfficeToken.IMAGE_DATA.equals(tagName))
{
xLinkReadHandler = new XLinkReadHandler();
return xLinkReadHandler;
}
if (OfficeNamespaces.OOREPORT_NS.equals(uri))
{
// expect a report control. The control will modifiy the current
// element (as we do not separate the elements that strictly ..)
if ("report-control".equals(tagName))
{
return new IgnoreAnyChildReadHandler();
}
if ("report-element".equals(tagName))
{
return new ReportElementReadHandler(contentElement);
}
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
// if we have static content (as well or only), that one goes into the
// alternate-content attribute right now. It is part of the output target
// and style rules to deal with them properly ..
if (xLinkReadHandler != null)
{
contentElement.setAttribute(OfficeNamespaces.OOREPORT_NS,
"alternate-content", xLinkReadHandler.getUri());
}
}
public Element getElement()
{
return contentElement;
}
}
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