/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: ImageReadHandler.java,v $
*
* $Revision: 1.3 $
*
* last change: $Author: hr $ $Date: 2007/11/02 11:24:47 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2007 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
* Copyright 2007 by Pentaho Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
package com.sun.star.report.pentaho.parser.rpt;
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.jfree.xmlns.parser.IgnoreAnyChildReadHandler;
import org.jfree.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 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, "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("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))
{
if ("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;
}
}