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https://issues.apache.org/jira/browse/FOP-2293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13939035#comment-13939035
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Seifeddine Dridi commented on FOP-2293:
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I don't want to complicate all of this any further. All I'm saying is that I 
prefer not to see any empty space in my document which may force FOP to make an 
extra page for nothing, because this is what actually happens if a dynamic 
content didn't fit in a page. The glue that you added after the BFP should be 
smart and returns its real width only when there is a previously selected 
variant. Don't you think?

> Whitespace management extension
> -------------------------------
>
>                 Key: FOP-2293
>                 URL: https://issues.apache.org/jira/browse/FOP-2293
>             Project: Fop
>          Issue Type: New Feature
>          Components: general
>    Affects Versions: trunk
>            Reporter: Seifeddine Dridi
>            Priority: Minor
>              Labels: XSL-FO
>             Fix For: trunk
>
>         Attachments: FO_multi-switch_best-fit_ext_rev2.patch, 
> FO_multi-switch_best-fit_ext_rev3.patch, 
> FO_multi-switch_best-fit_ext_rev4.patch, 
> FO_multi-switch_best-fit_ext_rev5.patch, 
> FO_multi-switch_best-fit_ext_rev6.patch, 
> FO_multi-switch_best-fit_ext_rev7.patch, 
> FO_multi-switch_best-fit_ext_rev8.patch, FO_multi-switch_test.fo, 
> FO_multi-switch_with_best-fit_extension.patch, bestfit.fo, doc.pdf, 
> multi-switch-testcases.zip, multi-switch_bestfit.fo, 
> multiple-feasible-nodes.fo, patch-rev1.1.patch, patch-rev1.patch, 
> patch-rev2.patch, patch.patch, two-valid-variants.fo
>
>
> I have been working on an extension for whitespace management, similar to 
> what's described here: 
> http://wiki.apache.org/xmlgraphics-fop/WhitespaceManagement
> The logic of the extension is very simple: the user defines a set of 
> alternatives that he wishes to insert at the end of a page, then if there is 
> enough space left, FOP will pick the alternative that best matches the user's 
> selection criteria (first fit, smallest fit, biggest fit).
> This is my first work on FOP and it took me almost 2 months to reach this 
> stage in development. But it's not the end of course, so I'm relying on your 
> feedback to improve it.
> Thank you



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