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Re: [css21][css22][css-tables][css-break][css-page][css-multicol][css-regions] repeating table headers and footers

From: Gérard Talbot <www-style@gtalbot.org>
Date: Wed, 20 Jan 2016 13:02:48 -0500
To: Florian Rivoal <florian@rivoal.net>
Cc: CSS public list <www-style@w3.org>
Message-ID: <7759acdeb971f93ed11d982e826392d1@gtalbot.org>
Le 2016-01-20 08:21, Florian Rivoal a écrit :
> When a table is fragmented over several fragmentainers (pages,
> columns...) should table headers and footers be repeated?
> 
> CSS2.1 is the only spec I know of to speak about this[1], and it
> doesn't actually decide:
> 
>> Print user agents may repeat header rows on each page spanned by a 
>> table.
> 
>> Print user agents may repeat footer rows on each page spanned by a 
>> table.


Personally, I think CSS2.2 should actually decide.


> First, I don't think we behavior should depend on categories of UAs
> (print vs non print).


Well, shouldn't it apply to paged media only?


> Second, this is not clear whether this should also apply to
> fragmentainers other than pages, introduced after CSS2.1.
> 
> And last, I am not too happy about this being up to the UA. If anyone,
> it feels like something that should be up to the author.
> 
> As far as I can tell, today:
> * Firefox, IE, and many print oriented formatters do repeat the
> headers/footers on page breaks
> * Webkit, Blink, and Vivliostyle don't (but we're considering 
> switching).
> * Some print formatters also repeat on column breaks.

[snip]

For your information, we have 2 tests on this:

http://test.csswg.org/suites/css2.1/nightly-unstable/html4/table-footer-group-004.htm

http://test.csswg.org/suites/css2.1/nightly-unstable/html4/table-header-group-004.htm

Based on these 2 tests

Firefox 43.0.4 repeat headers/footers on page breaks.

Prince 10 rev 4 repeat headers/footers on page breaks.

Opera 12.17 (Presto engine) does not repeat headers/footers on page 
breaks.

Gérard

> [1] https://www.w3.org/TR/CSS21/tables.html
> [2] https://www.w3.org/TR/xsl/#table-omit-header-at-break
> [3] https://www.w3.org/TR/xsl/#table-omit-footer-at-break
Received on Wednesday, 20 January 2016 18:03:20 UTC

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