-->

                xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"

                xmlns:l="http://docbook2x.sourceforge.net/xsl/localization"

                xmlns="http://docbook2x.sourceforge.net/xmlns/Texi-XML"

                exclude-result-prefixes="doc l"

                version='1.0'

                xml:lang="en">

     $Id: xref.xsl,v 1.23 2004/08/22 22:46:07 stevecheng Exp $

     ********************************************************************

     (C) 2000-2004 Steve Cheng <stevecheng@users.sourceforge.net>

     This file is part of the docbook2X XSLT stylesheets for

     converting DocBook to Texinfo.

     See ../../COPYING for the copyright status of this software.

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

<doc:reference xmlns="">

<title>Handle cross references and links</title>

</doc:reference>

<xsl:template name="anchor">

  <xsl:if test="@id">

    <anchor id="{@id}" />

  </xsl:if>

</xsl:template>

<xsl:template match="anchor">

  <xsl:call-template name="anchor" />

</xsl:template>

<xsl:template name="check-xref">

  <xsl:param name="target" />

  <xsl:param name="content" />

  <xsl:param name="bad-content" />

  <xsl:choose>

    <xsl:when test="not($target)">

      <xsl:call-template name="user-message">

        <xsl:with-param name="arg-1" select="@linkend" />

        <xsl:with-param name="key">reference to non-existent ID</xsl:with-param>

        <xsl:with-param name="content">reference to non-existent ID "<l:a1 />"</xsl:with-param>

      </xsl:call-template>

      <xsl:copy-of select="$bad-content" />

    </xsl:when>

    <xsl:otherwise>

      <xsl:copy-of select="$content" />

    </xsl:otherwise>

  </xsl:choose>

</xsl:template>

<xsl:template match="xref">

  <xsl:variable name="target" select="key('id', @linkend)"/>

  <xsl:call-template name="check-xref">

    <xsl:with-param name="target" select="$target" />

    <xsl:with-param name="bad-content">

      <xsl:call-template name="gentext-rendering">

        <xsl:with-param name="key" select="'dangling-xref'" />

        <xsl:with-param name="content" select="string(@linkend)" />

      </xsl:call-template>

    </xsl:with-param>

    <xsl:with-param name="content">

      <ref>

        <xsl:attribute name="idref">

          <xsl:call-template name="print-id">

            <xsl:with-param name="node" select="$target" />

          </xsl:call-template>

        </xsl:attribute>

        <xsl:apply-templates select="$target" mode="xref-to" />

      </ref>

    </xsl:with-param>

  </xsl:call-template>

</xsl:template>

<xsl:template match="link">

  <xsl:variable name="target" select="key('id', @linkend)"/>

  <xsl:call-template name="check-xref">

    <xsl:with-param name="target" select="$target" />

    <xsl:with-param name="bad-content">

      <xsl:call-template name="gentext-rendering">

        <xsl:with-param name="key" select="'dangling-xref'" />

        <xsl:with-param name="content" select="string(@linkend)" />

      </xsl:call-template>

    </xsl:with-param>

    <xsl:with-param name="content">

    <xsl:choose>

    <xsl:when test="$links-use-pxref">

      <xsl:apply-templates />

      <xsl:text> (</xsl:text>

      <pxref>

        <xsl:attribute name="idref">

          <xsl:call-template name="print-id">

            <xsl:with-param name="node" select="$target" />

          </xsl:call-template>

        </xsl:attribute>

      </pxref>

      <xsl:text>)</xsl:text>

    </xsl:when>

    <xsl:otherwise>

      <ref>

        <xsl:attribute name="idref">

          <xsl:call-template name="print-id">

            <xsl:with-param name="node" select="$target" />

          </xsl:call-template>

        </xsl:attribute>

        <xsl:apply-templates />

      </ref>

    </xsl:otherwise>

    </xsl:choose>

    </xsl:with-param>

  </xsl:call-template>

</xsl:template>

<xsl:template match="ulink">

  <uref>

    <xsl:attribute name="url"><xsl:value-of select="@url"/></xsl:attribute>

    <xsl:apply-templates/>

  </uref>

</xsl:template>

<xsl:template match="olink">

  <xsl:apply-templates/>

</xsl:template>

<doc:mode mode="xref-to" xmlns="">

<refpurpose>Give cross-reference markup</refpurpose>

<refdescription>

<para>

Processing an element with this mode returns the markup/text that should

be used for referring to it in cross-references.</para>

<para>

Since Texinfo already handles cross references to nodes, this mode

does mostly nothing.  FIXME: However we need something for anchors...

</para>

</refdescription>

</doc:mode>

<xsl:template match="*" mode="xref-to">

  <xsl:choose>

    <xsl:when test="@xreflabel">

      <xsl:value-of select="@xreflabel" />

    </xsl:when>

    <xsl:otherwise>

           If the title doesn't exist, $title is empty,

           then we let Texinfo take care of it.

      -->

      <xsl:apply-templates select="." mode="for-title">

        <xsl:with-param name="suppress-error" select="true()" />

      </xsl:apply-templates>

    </xsl:otherwise>

  </xsl:choose>

</xsl:template>

<xsl:template match="co" mode="xref-to">

  <xsl:apply-templates select="." mode="co" />

</xsl:template>

</xsl:stylesheet>