Declare variable inside if, and use it inside the next if - xslt

Question

I have met a problem at my work, I am currently developing on an already built website (that i havn't developed myself), and I'm not really familiar with Umbraco and xslt..
This is the code im working on:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp " "> ]>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxml="urn:schemas-microsoft-com:xslt"
xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets"
exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets ">
<xsl:output method="xml" omit-xml-declaration="yes"/>
<xsl:template match="/">
<style>
span.cc { font-size:9px;border:1px solid #000;margin-right:3px; }
</style>
<xsl:variable name="lcletters">abcdefghijklmnopqrstuvwxyz</xsl:variable>
<xsl:variable name="ucletters">ABCDEFGHIJKLMNOPQRSTUVWXYZ</xsl:variable>
<table width="100%">
<xsl:variable name="loc" select="umbraco.library:GetXmlDocument('/media/31087/data.xml', 1)"/>
<xsl:for-each select="$loc/rdsppGenData/generatorData">
<xsl:variable name="tags">
<xsl:if test="(OA23) and (not(OA23 = '-'))">cat_1223 </xsl:if>
<xsl:if test="(OA30) and (not(OA30 = '-'))">cat_1868 </xsl:if>
<xsl:if test="(OA36) and (not(OA36 = '-'))">cat_1227 </xsl:if>
<xsl:if test="(OA60) and (not(OA60 = '-'))">cat_1881 </xsl:if>
<xsl:if test="(F0) and (F0 = 'Z01')">cat_1229 </xsl:if>
<xsl:if test="(F0) and (F0 = 'X01')">cat_1802 </xsl:if>
</xsl:variable>
<xsl:variable name="system">
<xsl:choose>
<xsl:when test="F0">
<xsl:value-of select="F1"/>
</xsl:when>
<xsl:when test="(OA23) or (OA30) or (OA36) or (OA60)">
<xsl:value-of select="system"/>
</xsl:when>
</xsl:choose>
</xsl:variable>
<xsl:variable name="TE">
<xsl:choose>
<xsl:when test="F0">
<xsl:value-of select="F2"/>
</xsl:when>
<xsl:when test="(OA23) or (OA30) or (OA36) or (OA60)">
<xsl:value-of select="TE"/>
</xsl:when>
</xsl:choose>
</xsl:variable>
<xsl:variable name="P1">
<xsl:choose>
<xsl:when test="F0">
<xsl:value-of select="P1s"/>
</xsl:when>
<xsl:when test="(OA23) or (OA30) or (OA36) or (OA60)">
<xsl:value-of select="P1"/>
</xsl:when>
</xsl:choose>
</xsl:variable>
<xsl:variable name="P2">
<xsl:choose>
<xsl:when test="F0">
<xsl:value-of select="P2s"/>
</xsl:when>
<xsl:when test="(OA23) or (OA30) or (OA36) or (OA60)">
<xsl:value-of select="P2"/>
</xsl:when>
</xsl:choose>
</xsl:variable>
<xsl:variable name="description">
<xsl:choose>
<xsl:when test="F0">
<xsl:value-of select="Sdescription"/>
</xsl:when>
<xsl:when test="(OA23) or (OA30) or (OA36) or (OA60)">
<xsl:value-of select="description"/>
</xsl:when>
</xsl:choose>
</xsl:variable>
<xsl:if test="not(contains($system,'_'))">
<xsl:if test="3 = string-length($system)">
<tr class="sys ovs_{generate-id(msxml:node-set($system))} {$tags}" id="sys_{generate-id(msxml:node-set($system))}" >
<td onclick="sys('{generate-id(msxml:node-set($system))}',1)" class="label">
<xsl:value-of select="$system"/>
</td>
<xsl:variable name="systemname" select="translate($system,$ucletters,$lcletters)" />
<td onclick="sys('{generate-id(msxml:node-set($system))}',1)" class="color">
<xsl:if test="(OA23) and (not(OA23 = '-'))">
<span class="cc" style="width:8px;background-color:#4DAA5B;"> </span>
</xsl:if>
<xsl:if test="(OA30) and (not(OA30 = '-'))">
<span class="cc" style="width:8px;background-color:#EDEA87;"> </span>
</xsl:if>
<xsl:if test="(OA36) and (not(OA36 = '-'))">
<span class="cc" style="width:8px;background-color:#EA6A00;"> </span>
</xsl:if>
<xsl:if test="(OA60) and (not(OA60 = '-'))">
<span class="cc" style="width:8px;background-color:#C897CC;"> </span>
</xsl:if>
<xsl:if test="(F0) and (F0 = 'Z01')">
<span class="cc" style="width:8px;background-color:#829ED8;"> </span>
</xsl:if>
<xsl:if test="(F0) and (F0 = 'X01')">
<span class="cc" style="width:8px;background-color:#9FAD00;"> </span>
</xsl:if>
</td>
<td onclick="sys('{generate-id(msxml:node-set($system))}',1)" class="kw">
<span class="keyword"><xsl:value-of select="$description"/> </span>
</td>
</tr>
</xsl:if>
<xsl:if test="5 = string-length($system)">
<xsl:if test="(3 > string-length($TE)) or (not($TE))">
<xsl:variable name="tags2">
<xsl:if test="(OA23) and (not(OA23 = '-'))">cat_1223 </xsl:if>
<xsl:if test="(OA30) and (not(OA30 = '-'))">cat_1868 </xsl:if>
<xsl:if test="(OA36) and (not(OA36 = '-'))">cat_1227 </xsl:if>
<xsl:if test="(OA60) and (not(OA60 = '-'))">cat_1881 </xsl:if>
<xsl:if test="(F0) and (F0 = 'Z01')">cat_1229 </xsl:if>
<xsl:if test="(F0) and (F0 = 'X01')">cat_1802 </xsl:if>
</xsl:variable>
<xsl:variable name="second_level_id" select="generate-id(msxml:node-set($system))" />
<tr id="sys_{generate-id(msxml:node-set($system))}" style="display:none" class="sys2 {generate-id(msxml:node-set($system))} {$tags2}">
<td style="padding-left:30px; width:190px;" onclick="sys('{generate-id(msxml:node-set($system))}',2)" class="label">
<xsl:value-of select="$system"/>
</td>
<td class="gallery_icon">
</td>
<td onclick="sys('{generate-id(msxml:node-set($system))}',2)"> </td>
<td class="keyword" onclick="sys('{generate-id(msxml:node-set($system))}',2)">
<xsl:value-of select="$description"/>
</td>
</tr>
</xsl:if>
</xsl:if>
<xsl:if test="($TE) and (not($TE = '-')) and (not($TE = ''))">
<xsl:variable name="tags3">
<xsl:if test="(OA23) and (not(OA23 = '-'))">cat_1223 </xsl:if>
<xsl:if test="(OA30) and (not(OA30 = '-'))">cat_1868 </xsl:if>
<xsl:if test="(OA36) and (not(OA36 = '-'))">cat_1227 </xsl:if>
<xsl:if test="(OA60) and (not(OA60 = '-'))">cat_1881 </xsl:if>
<xsl:if test="(F0) and (F0 = 'Z01')">cat_1229 </xsl:if>
<xsl:if test="(F0) and (F0 = 'X01')">cat_1802 </xsl:if>
</xsl:variable>
<xsl:variable name="third_level_id" select="generate-id(msxml:node-set($TE))" />
<tr id="sys_{generate-id(msxml:node-set($TE))}" style="display:none" class="sys3 sub_{second_level_id} {generate-id(msxml:node-set($TE))} {$tags3}">
<td style="padding-left:60px; width:160px;" onclick="sys('{generate-id(msxml:node-set($TE))}',3)" class="label">
<xsl:value-of select="$TE"/>
</td>
<td class="gallery_icon">
</td>
<td onclick="sys('{generate-id(msxml:node-set($TE))}',3)"> </td>
<td class="keyword" onclick="sys('{generate-id(msxml:node-set($TE))}',3)">
<xsl:value-of select="$description"/>
</td>
</tr>
</xsl:if>
<xsl:if test="($P1) and (not($P1 = '-')) and (not($P1 = ''))">
<xsl:variable name="tags4">
<xsl:if test="(OA23) and (not(OA23 = '-'))">cat_1223 </xsl:if>
<xsl:if test="(OA30) and (not(OA30 = '-'))">cat_1868 </xsl:if>
<xsl:if test="(OA36) and (not(OA36 = '-'))">cat_1227 </xsl:if>
<xsl:if test="(OA60) and (not(OA60 = '-'))">cat_1881 </xsl:if>
<xsl:if test="(F0) and (F0 = 'Z01')">cat_1229 </xsl:if>
<xsl:if test="(F0) and (F0 = 'X01')">cat_1802 </xsl:if>
</xsl:variable>
<xsl:variable name="fourth_level_id" select="generate-id(msxml:node-set($P1))" />
<tr id="sys_{generate-id(msxml:node-set($P1))}" style="display:none" class="sys4 sub_{third_level_id} subi_{second_level_id} {generate-id(msxml:node-set($P1))} {$tags4}">
<td style="padding-left:90px; width:130px;" onclick="sys('{generate-id(msxml:node-set($P1))}',4)" class="label">
<xsl:value-of select="$P1"/>
</td>
<td class="gallery_icon">
</td>
<td onclick="sys('{generate-id(msxml:node-set($P1))}',4)"> </td>
<td class="keyword" onclick="sys('{generate-id(msxml:node-set($P1))}',4)">
<xsl:value-of select="$description"/>
</td>
</tr>
</xsl:if>
<xsl:if test="($P2) and (not($P2 = '-')) and (not($P2 = ''))">
<xsl:variable name="tags5">
<xsl:if test="(OA23) and (not(OA23 = '-'))">cat_1223 </xsl:if>
<xsl:if test="(OA30) and (not(OA30 = '-'))">cat_1868 </xsl:if>
<xsl:if test="(OA36) and (not(OA36 = '-'))">cat_1227 </xsl:if>
<xsl:if test="(OA60) and (not(OA60 = '-'))">cat_1881 </xsl:if>
<xsl:if test="(F0) and (F0 = 'Z01')">cat_1229 </xsl:if>
<xsl:if test="(F0) and (F0 = 'X01')">cat_1802 </xsl:if>
</xsl:variable>
<tr id="sys_{generate-id(msxml:node-set($P2))}" style="display:none" class="sys5 subi_{third_level_id} subi_{second_level_id} sub_{fourth_level_id} {generate-id(msxml:node-set($P2))} {$tags5}">
<td style="padding-left:120px; width:100px;" onclick="sys('{generate-id(msxml:node-set($P2))}',5)" class="label">
<xsl:value-of select="$P2"/>
</td>
<td class="gallery_icon">
</td>
<td onclick="sys('{generate-id(msxml:node-set($P2))}',5)"> </td>
<td class="keyword" onclick="sys('{generate-id(msxml:node-set($P2))}',5)">
<xsl:value-of select="$description"/>
</td>
</tr>
</xsl:if>
</xsl:if>
</xsl:for-each>
</table>
</xsl:template>
</xsl:stylesheet>
And i am trying to get the unique ID from the prev. tr and use it in the current row..
I want to use the variable:
<xsl:variable name="second_level_id" select="generate-id(msxml:node-set($system))" />
​in this line:
<tr id="sys_{generate-id(msxml:node-set($TE))}" style="display:none" class="sys3 sub_{second_level_id} {generate-id(msxml:node-set($TE))} {$tags3}">
And so on.
If there is ANY better way of doing all of this, where i would get the exact same output, but with the desired variable thingy from above, i would love to hear about it.
Mathias

Answer 1

Here is a way you should be able to accomplish this:
Replace this:
<xsl:for-each select="$loc/rdsppGenData/generatorData">
with:
<xsl:variable name="locItems" select="$loc/rdsppGenData/generatorData" />
<xsl:apply-templates select="$locItems[1]">
<xsl:with-param name="remainder" select="$locItems[position() > 1" />
</xsl:apply-templates>
Add this to your XSLT:
<xsl:template match="generatorData">
<xsl:param name="remainder" />
<xsl:param name="last_second_level_id" />
<xsl:param name="last_third_level_id" />
<!-- Move the contents of the xsl:for-each in here -->
<xsl:apply-templates select="$remainder[1]">
<xsl:with-param name="remainder" select="$remainder[position() > 1]" />
<xsl:with-param name="last_second_level_id" select="$second_level_id" />
<xsl:with-param name="last_thirdlevel_id" select="$second_level_id" />
</xsl:apply-templates>
</xsl:template>