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Julian GuySubject: XSL help needed for recursive nested list menu
Author: Julian Guy
Date: 27 Feb 2006 04:41 AM
I have an XML file like this:

<menu>
<page id="1" name="home" url="default.asp">
<page id="2" name="second level 1" url="">
<page id="5" name="third level 1" url="">
<page id="8" name="fourth level 1" url=""/>
<page id="9" name="fourth level 2" url=""/>
</page>
<page id="6" name="third level 2" url=""/>
<page id="7" name="third level 3" url=""/>
</page>
<page id="3" name="second level 2" url=""/>
<page id="4" name="second level 3" url=""/>
</page>
</menu>

I need to write an XSL that writes out an unordered HTML list for the section based on a parameter of the current page. So. If i'm on page with id="9" I need:

Code:

<ul>
<li class="parent"><a href="">second level 1</a>
<li class="parent"><a href="">third level 1</a>
<li><a href="">fourth level 1</a>
<li class="selected"><a href="">fourth level 2</a>
</li>
<li/><a href="">third level 2</a></li>
<li/><a href="">third level 3</a></li>
</li>
</ul>



I'm really stuck. I've got this far:

Code:

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" indent="yes"/>

<xsl:param name="pageId" />

<xsl:template match="page">
<ul>
<xsl:choose>
<xsl:when test="descendant-or-self::page[@id=$pageId]">

<li class="parent"><xsl:value-of select="@name"/><xsl:apply-templates select="page"/></li>
</xsl:when>
<xsl:otherwise>

<li><xsl:value-of select="@name"/><xsl:apply-templates select="page"/></li>
</xsl:otherwise>
</xsl:choose>
</ul>
</xsl:template>

</xsl:stylesheet>



Nearly but not quite. can anyone tell me how to limit it to match within a specified depth?

Posttop
Minollo I.Subject: XSL help needed for recursive nested list menu
Author: Minollo I.
Date: 27 Feb 2006 09:59 AM
Julian,
I'm not sure I understand your constraints.

Does something like this work any better for you?
<xsl:choose>
<xsl:when test="descendant-or-self::page[@id=$pageId]">
<li class="parent">
<xsl:value-of select="@name"/>
<xsl:apply-templates select="page"/>
</li>
</xsl:when>
<xsl:when test="preceding-sibling::page/page[@id=$pageId] or following-sibling::page/page[@id=$pageId]">
<li class="parent">
<xsl:value-of select="@name"/>
<xsl:apply-templates select="page"/>
</li>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates select="page"/>
</xsl:otherwise>
</xsl:choose>

From what you wrote, I couldn't understand what you are try to show/hide when specifying a specific page id, and if what you want to display is a flat or hierarchical list.

Minollo
   
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