Re: [xsl] Complex conditional-page-master-reference force last with first

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2009-02-20 15:35 -0700, Karl Stubsjoen wrote:
> Here is the scenario, and will use # of lines to give a feel for the
> amount of available real estate for each conditional template:
>
> only - 20 lines
> first - 30 lines
> any - 40 lines
> last - 30 lines
>
>
> Between 20 and 30 lines of content we have a problem.  On 21-29 lines
> of detail the result is just a first template.  Necessary are the
> summary details on the last page template.  So, it is necessary to
> force the last page, but how?

First I confess I'm not really confident I understand your question at all.

But I *think* you are asking how a one-page formatted document with 
21-30 lines would be formatted using the last-page page master rather 
than the first-page page master.

That would be achieved by ordering your conditional page masters such 
that the first in document order of conditional elements to test true 
for 21-30 lines is the one that formats the last page rather than the 
one that formats the first page:

 <repeatable-page-master-alternatives>
   <conditional-page-master-reference master-reference="frame-only"
                                      page-position="only"/>
   <conditional-page-master-reference master-reference="frame-last"
                                      page-position="last"/>
   <conditional-page-master-reference master-reference="frame-first"
                                      page-position="first"/>
   <conditional-page-master-reference master-reference="frame-other"/>
 </repeatable-page-master-alternatives>

This is because a page with only 21-30 lines satisfies three of the 
four page masters.  Your responsibility as a stylesheet writer is to 
present the options to the formatter *in the order you want the 
decision made*.  The first page master encountered to fit the 
criteria will be the one used by the formatter.

There is no obligation for the stylesheet to order the page masters 
in the order you've cited, but if you've used that order, then the 
formatter will first be satisfied with the "first" page geometry and 
won't bother looking at the "any" or "last" page masters.

In the order I've proposed the formatter will be first satisfied with 
the "last" page master before looking at the "first" or "any" page 
master.  If there are 31 or more lines, then the "last" page master 
doesn't satisfy the first 30 lines because page-position="last" isn't 
true when using that page geometry, and it will correctly use the 
following "first" page master.

I hope I've guessed your requirement correctly and that this helps.

. . . . . . . . . . . Ken


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