Re: [xsl] Walking a tree

[Anton Triest <anton@xxxxxxxx>]

Hi Marcus,

Here's a solution that uses apply-templates with a mode (mode="pageNav") 
instead of call-template. I'm assuming that you can pass the name of the 
clicked node in a global param:

   <xsl:param name="target" select="'node23'"/>

Then, instead of <xsl:call-template 
name="pageNav"><xsl:with-param.../xsl:call-template>

   <xsl:apply-templates select="node" mode="pageNav"/>

and this template:

   <xsl:template match="node | leaf" mode="pageNav">
       <xsl:copy>
           <xsl:copy-of select="@*"/>
           <xsl:apply-templates select="node" mode="pageNav"/>
           <xsl:if test="@name = $target">
               <xsl:apply-templates select="leaf" mode="pageNav"/>
           </xsl:if>
       </xsl:copy>
   </xsl:template>

output:

   <node>
       <node name="node1"/>
       <node name="node2">
           <node name="node22"/>
           <node name="node23">
               <leaf name="leaf231"/>
               <leaf name="leaf232"/>
           </node>
           <node name="node24"/>
       </node>
   </node>

Cheers,
Anton


Marcus Andersson wrote:

> I'm trying to walk a tree with the following structure (more or less):
>
> <node>
>   <node name="node1">
>     <leaf name="leaf1"/>
>     <leaf name="leaf2"/>
>   </node>
>   <node name="node2">
>     <node name="node22">
>       <leaf name="leaf221"/>
>       <leaf name="leaf222"/>
>     </node>
>     <node name="node23">
>       <leaf name="leaf231"/>
>       <leaf name="leaf232"/>
>     </node>
>     <node name="node24">
>       <leaf name="leaf241"/>
>       <leaf name="leaf242"/>
>     </node>
>   </node>
> </node>
>
> Then I want to render a graphical tree based on this and on a selected 
> node (for example, if I have clicked on node24 I want the tree to be 
> unfolded downto that node including it's children. I don't want node23 
> and node22 to be unfolded and neither node1).
>
> I have some almost working code to render this except that a test 
> isn't working so when I click on node24 then node22 and node23 get 
> unfolded as well.
>
>   <xsl:template name="pageNav">
>     <xsl:param name="targetNode"/>
>     <xsl:param name="currentNode"/>
>       <xsl:for-each select="$currentNode/node|$currentNode/leaf">
>     ... lots of presentation code ...
>
>             <!-- I guess it's this test that should be modified -->
>               <xsl:if test=". = $targetNode/ancestor-or-self::node">
>                 <xsl:call-template name="pageNav">
>                   <xsl:with-param name="targetNode" 
> select="$targetNode"/>
>                   <xsl:with-param name="currentNode" select="."/>
>                 </xsl:call-template>
>               </xsl:if>
>       </xsl:for-each>
>   </xsl:template>
>
> Any suggestions? Do you need more input? I'm using MSXML3 so 
> node-set() is acceptable (although it shouldn't be needed)
>
> /Marcus