package com.nwalsh.xalan;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import org.w3c.dom.*;
import org.apache.xpath.DOMHelper;
import org.apache.xml.utils.DOMBuilder;
import org.apache.xml.utils.AttList;
import com.nwalsh.xalan.Callout;
/**
* <p>Utility class for the Verbatim extension (ignore this).</p>
*
* <p>$Id: FormatCallout.java,v 1.2 2001/05/21 15:00:26 nwalsh Exp $</p>
*
* <p>Copyright (C) 2000, 2001 Norman Walsh.</p>
*
* <p><b>Change Log:</b></p>
* <dl>
* <dt>1.0</dt>
* <dd><p>Initial release.</p></dd>
* </dl>
*
* @author Norman Walsh
* <a href="mailto:ndw@nwalsh.com">ndw@nwalsh.com</a>
*
* @see Verbatim
*
* @version $Id: FormatCallout.java,v 1.2 2001/05/21 15:00:26 nwalsh Exp $
**/
public abstract class FormatCallout {
protected static final String foURI = "http://www.w3.org/1999/XSL/Format";
protected static final String xhURI = "http://www.w3.org/1999/xhtml";
protected boolean stylesheetFO = false;
protected DOMHelper dh = null;
public FormatCallout() {
//nop;
}
public String areaLabel(Element area) {
NamedNodeMap domAttr = area.getAttributes();
AttList attr = new AttList(domAttr, dh);
String label = null;
if (attr.getValue("label") != null) {
// If this area has a label, use it
label = attr.getValue("label");
} else {
// Otherwise, if its parent is an areaset and it has a label, use that
Element parent = (Element) area.getParentNode();
NamedNodeMap pdomAttr = parent.getAttributes();
AttList pAttr = new AttList(pdomAttr, dh);
if (parent != null
&& parent.getNodeName().equals("areaset")
&& pAttr.getValue("label") != null) {
label = pAttr.getValue("label");
}
}
return label;
}
public void startSpan(DOMBuilder rtf)
throws SAXException {
// no point in doing this for FO, right?
if (!stylesheetFO) {
AttributesImpl spanAttr = new AttributesImpl();
spanAttr.addAttribute("", "class", "class", "CDATA", "co");
rtf.startElement("", "span", "span", spanAttr);
}
}
public void endSpan(DOMBuilder rtf)
throws SAXException {
// no point in doing this for FO, right?
if (!stylesheetFO) {
rtf.endElement("", "span", "span");
}
}
public void formatTextCallout(DOMBuilder rtf,
Callout callout) {
Element area = callout.getArea();
int num = callout.getCallout();
String userLabel = areaLabel(area);
String label = "(" + num + ")";
if (userLabel != null) {
label = userLabel;
}
char chars[] = label.toCharArray();
try {
startSpan(rtf);
rtf.characters(chars, 0, label.length());
endSpan(rtf);
} catch (SAXException e) {
System.out.println("SAX Exception in text formatCallout");
}
}
public abstract void formatCallout(DOMBuilder rtf,
Callout callout);
}