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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] counting preceding identical elements
 Hi, I am at loss whether what I am trying to do is at all possible. I would be able to do it in some other way, but this would mean major rearrangements to what I have so far, and I would prefer to keep things the way they are. I am building a simple Powerpoint-style presentation tool running on top of Cocoon. My XML-structure is simple: <presentation> <info>...</info> <body> <section> <slide>...</slide> <slide>...</slide> ... </section> <section> yes, same stuff here ... </section> </body> </presentation> Using Cocoon's clever parameter-passing, I can access each individual slide using a section and slide number passed through to the stylesheet, using URL's like http://localhost/cocoon/presentation/browse?section=2&slide=4 This is all working very nice. Using a main 'presentation' template, I build the HTML grid and then <xsl:apply-templates select="body/section[position()=$section]/slide[position()=$slide]"/>. Outside of the node context created by this template however, I want to build a little progress indicator showing how far I am in my presentation. This little portion does most of what I want it to do: <b><xsl:value-of select="$section"/></b> <font size="-1" color="gray">/<xsl:value-of select="count(//section)"/></font>  <font size="+2"><b>|</b></font>  <font size="-1"><xsl:value-of select="$slide"/> <font color="gray">/ <xsl:value-of select="count(//section[position()=$section]/slide)"/> </font> </font> builds up a something like this: 2/ 3 | 4/ 6 which is fine, but only depending on the parameters passed into the stylesheet ($section and $slide). The last thing I want to add to the indicator is a percentage - roughly calculated by dividing the number of preceding slides by the total amount of slides. And now I fall into problems because this isn't happening when the context node 'focus' is on the slide element but outside the main loop. What I basically try to do is to calculate the number of preceding slide elements of the slide element which position()=$slide and of which the parent section element's position()=$section. But I get all kinds of odd numbers - can't really figure out what is wrong in my count() argument. I've been trying count(//section[position()=$section]/preceding::sibling[position()=$slide]) to no avail. Then I switched strategies into abusing <xsl:number> like: <xsl:number level="any" count="//section[$section]/slide[$slide]"/> but that made not much sense neither. A long story to ask whether what I am trying to do is really feasible when not at the slide element itself but only with the basic knowledge that there IS a fourth slide in section 2 due to the parameters. Any ideas? I know using position() is considered to be bad practice. Punish me :-) Regards, </Steven> XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list 
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