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These are Java extensions for use with the DocBook XML stylesheets and the Xalan-Java XSLT engine.

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package com.nwalsh.xalan;

import org.xml.sax.helpers.AttributesImpl;
import org.xml.sax.SAXException;
import org.w3c.dom.*;
import org.apache.xml.utils.DOMBuilder;
import com.nwalsh.xalan.Callout;
import org.apache.xml.utils.AttList;

/**
 * Utility class for the Verbatim extension (ignore this).
 *
 * $Id: FormatDingbatCallout.java 7007 2007-07-11 07:09:12Z mzjn $
 *
 * Copyright (C) 2000, 2001 Norman Walsh.
 *
 * Change Log:
 * 
 * 1.0
 * Initial release.
 * 
 *
 * @author Norman Walsh
 * [email protected]
 *
 * @see Verbatim
 *
 * @version $Id: FormatDingbatCallout.java 7007 2007-07-11 07:09:12Z mzjn $
 **/

public class FormatDingbatCallout extends FormatCallout {
  int graphicsMax = 0;

  public FormatDingbatCallout(int max, boolean fo) {
    graphicsMax = max;
    stylesheetFO = fo;
  }

  public void formatCallout(DOMBuilder rtf,
			    Callout callout) {
    Element area = callout.getArea();
    int num = callout.getCallout();
    String label = areaLabel(area);

    try {
      if (label == null && num <= graphicsMax) {
	AttributesImpl imgAttr = new AttributesImpl();
	String ns = "";
	String prefix = "";
	String imgName = "";

	if (stylesheetFO) {
	  ns = foURI;
	  prefix = "fo:"; // FIXME: this could be a problem...
	  imgName = "inline";
	  imgAttr.addAttribute("", "font-family", "font-family", "CDATA",
			       "ZapfDingbats");
	} else {
	  ns = "";
	  prefix = "";
	  imgName = "font";
	  imgAttr.addAttribute("", "face", "face", "CDATA",
			       "ZapfDingbats");
	}

	startSpan(rtf, "");  // empty dummy id
	rtf.startElement(ns, imgName, prefix+imgName, imgAttr);

	char chars[] = new char[1];
	chars[0] = (char) (0x2775 + num);
	rtf.characters(chars, 0, 1);

	rtf.endElement(ns, imgName, prefix+imgName);
	endSpan(rtf);
      } else {
	formatTextCallout(rtf, callout);
      }
    } catch (SAXException e) {
      System.out.println("SAX Exception in graphics formatCallout");
    }
  }
}