<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:fo="http://www.w3.org/1999/XSL/Format"
                xmlns:exsl="http://exslt.org/common"
                exclude-result-prefixes="exsl"
                version='1.0'>

<!-- ********************************************************************
     $Id: footnote.xsl,v 1.1 2007/09/19 15:49:54 malo_pichot Exp $
     ********************************************************************

     This file is part of the XSL DocBook Stylesheet distribution.
     See ../README or http://nwalsh.com/docbook/xsl/ for copyright
     and other information.

     ******************************************************************** -->

<xsl:template match="footnote">
  <xsl:choose>
    <xsl:when test="ancestor::tgroup">
      <fo:inline baseline-shift="super" font-size="90%">
        <xsl:apply-templates select="." mode="footnote.number"/>
      </fo:inline>
    </xsl:when>
    <xsl:otherwise>
      <fo:footnote>
        <fo:inline baseline-shift="super" font-size="90%">
          <xsl:apply-templates select="." mode="footnote.number"/>
        </fo:inline>
        <fo:footnote-body font-family="{$body.font.family}"
                          font-size="{$footnote.font.size}">
          <xsl:apply-templates/>
        </fo:footnote-body>
      </fo:footnote>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template match="footnoteref">
  <xsl:variable name="footnote" select="key('id',@linkend)"/>
  <fo:inline baseline-shift="super" font-size="90%">
    <xsl:apply-templates select="$footnote" mode="footnote.number"/>
  </fo:inline>
</xsl:template>

<xsl:template match="footnote" mode="footnote.number">
  <xsl:choose>
    <xsl:when test="ancestor::tgroup">
      <xsl:number level="any" from="tgroup" format="a"/>
    </xsl:when>
    <xsl:otherwise>
      <xsl:variable name="pfoot" select="preceding::footnote"/>
      <xsl:variable name="ptfoot" select="preceding::table//footnote
                                          |preceding::informaltable//footnote"/>
      <xsl:number value="count($pfoot) - count($ptfoot) + 1" format="1"/>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<!-- ==================================================================== -->

<xsl:template match="*" mode="footnote.body.number">
  <xsl:variable name="footnote.mark">
    <fo:inline baseline-shift="super" font-size="90%">
      <xsl:apply-templates select="ancestor::footnote" mode="footnote.number"/>
    </fo:inline>
  </xsl:variable>

  <xsl:variable name="fo">
    <xsl:apply-templates select="."/>
  </xsl:variable>

  <xsl:variable name="fo-nodes" select="exsl:node-set($fo)"/>

  <xsl:choose>
    <xsl:when test="$fo-nodes//fo:block">
      <xsl:apply-templates select="$fo-nodes" mode="insert.fo.fnum">
        <xsl:with-param name="mark" select="$footnote.mark"/>
      </xsl:apply-templates>
    </xsl:when>
    <xsl:otherwise>
      <xsl:apply-templates select="$fo-nodes" mode="insert.fo.text">
        <xsl:with-param name="mark" select="$footnote.mark"/>
      </xsl:apply-templates>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<!-- ==================================================================== -->

<xsl:template match="footnote/para[1]
                     |footnote/simpara[1]
                     |footnote/formalpara[1]"
              priority="2">
  <!-- this only works if the first thing in a footnote is a para, -->
  <!-- which is ok, because it usually is. -->
  <fo:block>
    <fo:inline baseline-shift="super" font-size="90%">
      <xsl:apply-templates select="ancestor::footnote" mode="footnote.number"/>
    </fo:inline>
    <xsl:apply-templates/>
  </fo:block>
</xsl:template>

<xsl:template match="footnote" name="process.footnote" mode="table.footnote.mode">
  <xsl:choose>
    <xsl:when test="local-name(*[1]) = 'para' or local-name(*[1]) = 'simpara'">
      <fo:block>
        <xsl:apply-templates/>
      </fo:block>
    </xsl:when>

    <xsl:when test="function-available('exsl:node-set')">
      <fo:block>
        <xsl:apply-templates select="*[1]" mode="footnote.body.number"/>
        <xsl:apply-templates select="*[position() &gt; 1]"/>
      </fo:block>
    </xsl:when>

    <xsl:otherwise>
      <xsl:message>
        <xsl:text>Warning: footnote number may not be generated </xsl:text>
        <xsl:text>correctly; </xsl:text>
        <xsl:value-of select="local-name(*[1])"/>
        <xsl:text> unexpected as first child of footnote.</xsl:text>
      </xsl:message>
      <fo:block>
        <xsl:apply-templates/>
      </fo:block>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

</xsl:stylesheet>
