package com.nwalsh.saxon;
import org.xml.sax.SAXException;
import org.w3c.dom.*;
import javax.xml.transform.TransformerException;
import com.icl.saxon.om.NamePool;
import com.icl.saxon.output.Emitter;
import com.icl.saxon.tree.AttributeCollection;
import com.nwalsh.saxon.Callout;
/**
* <p>Utility class for the Verbatim extension (ignore this).</p>
*
* <p>$Id: FormatCallout.java,v 1.2 2001/07/31 18:35:35 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 2001/07/31 18:35:35 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 foStylesheet = false;
protected NamePool namePool = null;
public FormatCallout(NamePool nPool, boolean fo) {
namePool = nPool;
foStylesheet = fo;
}
public String areaLabel(Element area) {
String label = null;
if (area.hasAttribute("label")) {
// If this area has a label, use it
label = area.getAttribute("label");
} else {
// Otherwise, if its parent is an areaset and it has a label, use that
Element parent = (Element) area.getParentNode();
if (parent != null
&& parent.getLocalName().equalsIgnoreCase("areaset")
&& parent.hasAttribute("label")) {
label = parent.getAttribute("label");
}
}
return label;
}
public void startSpan(Emitter rtf)
throws TransformerException {
// no point in doing this for FO, right?
if (!foStylesheet && namePool != null) {
int spanName = namePool.allocate("", "", "span");
AttributeCollection spanAttr = new AttributeCollection(namePool);
int namespaces[] = new int[1];
spanAttr.addAttribute("", "", "class", "CDATA", "co");
rtf.startElement(spanName, spanAttr, namespaces, 0);
}
}
public void endSpan(Emitter rtf)
throws TransformerException {
// no point in doing this for FO, right?
if (!foStylesheet && namePool != null) {
int spanName = namePool.allocate("", "", "span");
rtf.endElement(spanName);
}
}
public void formatTextCallout(Emitter rtfEmitter,
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(rtfEmitter);
rtfEmitter.characters(chars, 0, label.length());
endSpan(rtfEmitter);
} catch (TransformerException e) {
System.out.println("Transformer Exception in formatTextCallout");
}
}
public abstract void formatCallout(Emitter rtfEmitter,
Callout callout);
}