DO NOT REPLY [Bug 40798] page-position="last" doesn't work for 1 page document

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https://issues.apache.org/bugzilla/show_bug.cgi?id=40798





--- Comment #9 from Andreas L. Delmelle <ad...@apache.org>  2008-09-20 06:40:26 PST ---
Created an attachment (id=22617)
 --> (https://issues.apache.org/bugzilla/attachment.cgi?id=22617)
Changes necessary to implement page-position="last"

Just thought I'd have a look into this, and AFAICT, implementing
page-position="only" would not really be that complex. Parts of it already
have, but org.apache.fop.layoutmgr.PageProvider always passes false for the
'isOnlyPage' parameter.

Now, I'm wondering whether this should be a parameter at all... If we pass
isFirstPage and isLastPage, then isOnlyPage is always implied (?)

Looking at the tests in ConditionalPageMasterReference.isValid() a little
closer, this also needed some work to /properly/ take into account
page-position="only". Before the patch, a master-reference with this
attribute-value will make isValid() always return true, even if isOnlyPage is
set to false.

The small patch in attach fixes the issue in PageProvider (but does not yet
eliminate the superfluous parameter). The changes in
ConditionalPageMasterReference, IMO, perfectly reflect the definition of the
values in the XSL-FO 1.1 Rec 6.4.12: ... "first", "last", "only" (both first
and last), "rest" (not first nor last) or "any" (all of the previous).

So, it does not really 'fix' the issue of not being able to use a 'last'
page-master-reference for a first page. The only ones eligible in that case are
those with page-position 'only' or 'any'.

The correct specification for the document in attachment 22237 would be (IIC):

...
   <page-sequence-master master-name="whatever">
     <repeatable-page-master-alternatives maximum-repeats="no-limit">
       <conditional-page-master-reference master-reference="only-page-layout"
                                          page-position="only"/>
       <conditional-page-master-reference master-reference="first-page-layout"
                                          page-position="first"/>
       <conditional-page-master-reference master-reference="last-page-layout"
                                          page-position="last"/>
       <conditional-page-master-reference master-reference="rest-page-layout"
                                          page-position="rest"/>
     </repeatable-page-master-alternatives>
   </page-sequence-master>
...

This works perfectly after applying the patch, and breaks no other testcases,
so I'm contemplating a commit.


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