package org.pentaho.reporting.engine.classic.core.imagemap.parser;
import java.util.ArrayList;
import org.pentaho.reporting.engine.classic.core.imagemap.ImageMap;
import org.pentaho.reporting.engine.classic.core.imagemap.ImageMapEntry;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Todo: Document me!
* <p/>
* Date: 26.02.2010
* Time: 15:00:58
*
* @author Thomas Morgner.
*/
public class ImageMapReadHandler extends AbstractXmlReadHandler
{
private ImageMap imageMap;
private ArrayList readHandlerArrayList;
public ImageMapReadHandler()
{
readHandlerArrayList = new ArrayList();
imageMap = new ImageMap();
}
/**
* 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
{
final int length = attrs.getLength();
for (int i = 0; i < length; i++)
{
if ("xmlns".equals(attrs.getQName(i)) ||
attrs.getQName(i).startsWith("xmlns:"))
{
// workaround for buggy parsers
continue;
}
final String name = attrs.getLocalName(i);
if (name.indexOf(':') > -1)
{
// attribute with ':' are not valid and indicate a namespace definition or so
continue;
}
final String namespace = attrs.getURI(i);
final String attributeValue = attrs.getValue(i);
if (isSameNamespace(namespace))
{
if ("shape".equals(name))
{
continue;
}
if ("coords".equals(name))
{
continue;
}
}
imageMap.setAttribute(namespace, name, attributeValue);
}
}
/**
* Returns the handler for a child element.
*
* @param uri the URI of the namespace of the current 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 (isSameNamespace(uri) == false)
{
return null;
}
if ("area".equals(tagName))
{
final AreaReadHandler readHandler = new AreaReadHandler();
readHandlerArrayList.add(readHandler);
return readHandler;
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
for (int i = 0; i < readHandlerArrayList.size(); i++)
{
final AreaReadHandler readHandler = (AreaReadHandler) readHandlerArrayList.get(i);
imageMap.addMapEntry((ImageMapEntry) readHandler.getObject());
}
}
/**
* Returns the object for this element or null, if this element does
* not create an object.
*
* @return the object.
* @throws org.xml.sax.SAXException if an parser error occured.
*/
public Object getObject() throws SAXException
{
return imageMap;
}
}