<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:Stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]>
<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:math="urn:schemas-hizi-nl:math"
    exclude-result-prefixes="msxml umbraco.library math">


<xsl:output method="xml" omit-xml-declaration="yes"/>

<xsl:param name="currentPage"/>
<xsl:variable name="nodes" select="$currentPage/ancestor-or-self::node[@level=2]/descendant::node [@nodeTypeAlias = 'NewsEventsListPage']/node [string(data [@alias='umbracoNaviHide']) != '1'] [string(data [@alias = ' NewsFeatureSidebarImage']) != '']" />

<msxml:script language="JavaScript" implements-prefix="math">
function random(numDie,numMax,numMin){
if (numMin==null){numMin=1;}
var sum=0;
for (var index=0;index&lt;numDie;index++){
sum+=Math.floor(Math.random()*(numMax-numMin) + numMin);
}
return "" + sum;
}
function floorme(numFloor){
return "" + Math.floor(numFloor);
}
</msxml:script>


   <xsl:template match="/">
         <xsl:call-template name="panels">
            <xsl:with-param name="newnodes" select="$nodes"/>
            <xsl:with-param name="count" select="1"/>
         </xsl:call-template>
   </xsl:template>

   <xsl:template name="panels">
      <xsl:param name="newnodes" />
      <xsl:param name="count"/>

      <xsl:if test="$count &lt;= 3">

        <xsl:for-each select="$newnodes">
        <xsl:if test="position() = math:random(1, count($newnodes), 1)">
            <xsl:value-of select="$count"/> / <xsl:value-of select="@id"/><br />
            <xsl:call-template name="panels">
                <xsl:with-param name="newnodes" select="$newnodes [@id != @id]" />
                <xsl:with-param name="count" select="$count+1" />
            </xsl:call-template>
        </xsl:if>    
            </xsl:for-each>

      </xsl:if>
   </xsl:template>


</xsl:stylesheet>

<?xml version="1.0" encoding="utf-8" ?>
<XsltExtensions>
<ext assembly="/bin/Mvp.Xml" type="Mvp.Xml.Exslt.ExsltRandom" alias="Mvp.Xml.Exslt.ExsltRandom"/>
</XsltExtensions>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:Stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]>
<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.ExsltMath="urn:Exslt.ExsltMath"
    xmlns:Mvp.Xml.Exslt.ExsltRandom="urn:Mvp.Xml.Exslt.ExsltRandom"
    exclude-result-prefixes="msxml umbraco.library Exslt.ExsltMath Mvp.Xml.Exslt.ExsltRandom">

<!-- Ver. 1.03-080721 -->

<xsl:output method="xml" omit-xml-declaration="yes"/>

<xsl:param name="currentPage"/>

<xsl:variable name="noRandom">
    <xsl:choose>
        <xsl:when test="/macro/noRandom != ''">
            <xsl:value-of select="/macro/noRandom"/>
        </xsl:when>
        <xsl:otherwise>
            <xsl:text>12</xsl:text>
        </xsl:otherwise>
    </xsl:choose>
</xsl:variable>
<xsl:variable name="noRandomRecordsDivideBy">
    <xsl:choose>
        <xsl:when test="/macro/noRandomRecordsDivideBy != ''">
            <xsl:value-of select="/macro/noRandomRecordsDivideBy"/>
        </xsl:when>
        <xsl:otherwise>
            <xsl:text>4</xsl:text>
        </xsl:otherwise>
    </xsl:choose>
</xsl:variable>
<xsl:variable name="parentNode">
    <xsl:choose>
        <xsl:when test="/macro/parentNode != ''">
            <xsl:choose>
                <xsl:when test="/macro/parentNode > 0">
                    <xsl:value-of select="/macro/parentNode"/>
                </xsl:when>
                <xsl:otherwise>
                    <xsl:value-of select="$currentPage/@id"/>
                </xsl:otherwise>
            </xsl:choose>
        </xsl:when>
        <xsl:otherwise>
            <xsl:value-of select="$currentPage/@id"/>
        </xsl:otherwise>
    </xsl:choose>
</xsl:variable>

<xsl:template match="/">
    <!-- Displays random records of a specific group of groups -->
    <ul class="m-lp-r">
        <xsl:call-template name="randomNodes"/>
    </ul>
</xsl:template>

<xsl:template name="randomNodes">
    <!-- Check number of available nodes -->
    <xsl:variable name="noAvailableNodes" select="count(umbraco.library:GetXmlNodeById($parentNode)/descendant-or-self::node [string(data [@alias='umbracoNaviHide']) != '1' and @nodeTypeAlias = 'Product'])"/>
    <!-- Calculate number of nodes to display -->
    <!-- This is only done for listing n numbers of products side-by-side -->
    <xsl:variable name="noNodes">
        <xsl:choose>
            <xsl:when test="number($noAvailableNodes) > number($noRandom)">
                <xsl:value-of select="$noRandom"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="number($noAvailableNodes)-(number($noAvailableNodes) mod number($noRandomRecordsDivideBy))"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <!-- Start randomizing - we'll do this even though we'll sometimes be displaying all products due to positioning etc. -->
    <xsl:variable name="noRandom" select="floor(number(concat('0.',substring-after(Mvp.Xml.Exslt.ExsltRandom:randomSequence(1),',')))*$noAvailableNodes)+1"/>
    <xsl:call-template name="randomizeNodes">
        <xsl:with-param name="i" select="1"/>
        <xsl:with-param name="i2" select="1"/>
        <xsl:with-param name="arrayNodes" select="concat(concat('pos',$noRandom),';')"/>
        <xsl:with-param name="noAvailableNodes" select="$noAvailableNodes"/>
        <xsl:with-param name="noNodes" select="$noNodes"/>
        <xsl:with-param name="noRandom" select="$noRandom"/>
        <xsl:with-param name="printNode" select="1"/>
    </xsl:call-template>
</xsl:template>

<xsl:template name="randomizeNodes">
    <xsl:param name="i"/>
    <xsl:param name="i2"/>
    <xsl:param name="arrayNodes"/>
    <xsl:param name="noAvailableNodes"/>
    <xsl:param name="noNodes"/>
    <xsl:param name="noRandom"/>
    <xsl:param name="printNode"/>

    <!-- We'll check if we're printing the node pulled out of the hat last time -->
    <xsl:if test="$printNode=1">
        <xsl:variable name="randomNode" select="umbraco.library:GetXmlNodeById($parentNode)/descendant-or-self::node [string(data [@alias='umbracoNaviHide']) != '1' and @nodeTypeAlias = 'Product']"/>
        <!-- Call template for listing nodes -->
        <xsl:call-template name="listNodes">
            <xsl:with-param name="nodeID" select="$randomNode[$noRandom]/@id"/>
            <xsl:with-param name="nodeName" select="$randomNode[$noRandom]/@nodeName"/>
            <xsl:with-param name="nodeParent" select="$randomNode[$noRandom]/@parentID"/>
            <xsl:with-param name="nodeSummary" select="$randomNode[$noRandom]/data[@alias='bodyText']"/>
        </xsl:call-template>
    </xsl:if>
    <!-- As the randomSequence function() we're using will give you the same number over and over again we'll feed it with a different seed number each time -->
    <xsl:variable name="seed" select="$noRandom*$noRandom*$noRandom*$i"/>
    <!-- We'll make a new random number based on the seed -->
    <xsl:variable name="tempRandomPosition" select="floor(number(concat('0.',substring-after(Mvp.Xml.Exslt.ExsltRandom:randomSequence(1,$seed),',')))*$noAvailableNodes)+1"/>
    <!-- Now we'll check to see if the number already has been used - we'll surround the number starting with a "pos" and ending with a ";" to make sure we're not thinking the number 1 equals the number 10 etc. -->
    <xsl:variable name="tempArrayNodes">
        <xsl:choose>
            <xsl:when test="contains($arrayNodes,concat(concat('pos',$tempRandomPosition),';')) = false">
                <xsl:value-of select="concat($arrayNodes,concat(concat('pos',$tempRandomPosition),';'))"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="$arrayNodes"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <!-- We're always adding a number to i as to always have the seed number change -->
    <!-- The iNew is for counting how many random numbers we've actually made -->
    <xsl:variable name="iNew">
        <xsl:choose>
            <xsl:when test="contains($arrayNodes,concat(concat('pos',$tempRandomPosition),';')) = false">
                <xsl:value-of select="$i2+1"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="$i2"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <!-- We're giving the param value printNode a bool value telling it whether to print or not print next time -->
    <xsl:variable name="positionUnique">
        <xsl:choose>
            <xsl:when test="contains($arrayNodes,concat(concat('pos',$tempRandomPosition),';')) = false">
                <xsl:value-of select="1"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="0"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <!-- As long as we need more numbers we're doing it all over again -->
    <xsl:if test="$i2 &lt; $noNodes">
        <xsl:call-template name="randomizeNodes">
            <xsl:with-param name="i" select="$i+1"/>
            <xsl:with-param name="i2" select="$iNew"/>
            <xsl:with-param name="arrayNodes" select="$tempArrayNodes"/>
            <xsl:with-param name="noAvailableNodes" select="$noAvailableNodes"/>
            <xsl:with-param name="noNodes" select="$noNodes"/>
            <xsl:with-param name="noRandom" select="$tempRandomPosition"/>
            <xsl:with-param name="printNode" select="$positionUnique"/>
        </xsl:call-template>
    </xsl:if>
</xsl:template>

</xsl:stylesheet>