W3C home > Mailing lists > Public > www-style@w3.org > March 2010

Re: [CSS21] Proposal for a replacement for section 17.2.1 (table anonymous objects)

From: fantasai <fantasai.lists@inkedblade.net>
Date: Wed, 31 Mar 2010 11:21:21 -0500
To: Boris Zbarsky <bzbarsky@MIT.EDU>
Cc: www-style list <www-style@w3.org>
Message-ID: <3d5631c23d23d516a08b30e1a6dba79a@inkedblade.net>
On 03/31/2010 06:02 AM, Boris Zbarsky wrote:
> On 3/31/10 2:39 AM, fantasai wrote:
>> | 1.3 If a child C of a tabular container P is an anonymous inline box
>> | that contains only white space, and its immediately preceding
>> | and following siblings, if any, are proper table descendants of P
>> | and are either 'table-caption' or internal table boxes,
>> | then it is treated as if it had 'display: none'.
>> | A box D is a proper table descendant of A if D can be a descendant
>> | of A without causing the generation of any intervening 'table' or
>> | 'inline-table' boxes.
>> | [current rule 5, adjusted to match bz]
>> | 1.4 If a box B is an anonymous inline containing only white space,
and
>> | it has two immediate siblings both of which are internal table boxes,
>> | then it is treated as if it had 'display: none'.
>> [new]
>
> Still thinking through this, but why is rule 1.3 needed given rule 1.4?

To handle
   <table>
     <td>A</td>
   </table>
which should have only one cell.

> And shouldn't table-caption be mentioned in rule 1.4?

Yes.


Replace the list of rules in 17.2.1 with the following:

   | For the purposes of these rules, the following terms are defined:
   |
   |   row group box
   |     A 'table-row-group', 'table-header-group', or
'table-footer-group'
   |   proper table child
   |     A 'table-row' box, row group box, 'table-column' box,
'table-column-group'
   |     box, or 'table-caption-box'.
   |   proper table row parent
   |     A 'table' or 'inline-table' box or row group box
   |   internal table box
   |     A 'table-cell' box, 'table-row' box, row group box,
'table-column' box,
   |     or 'table-column-group' box.
   |   tabular container
   |     A 'table-row' box or proper table row parent
   |   consecutive
   |     Two sibling boxes are consecutive if they are both in flow and
have no
   |     intervening in-flow siblings other than, optionally, an anonymous
inline
   |     containing only white spaces. A sequence of sibling boxes is
consecutive
   |     if each box in the sequence is consecutive to the one before it
in the
   |     sequence.
   |
   | The following steps are performed in three stages.
   |
   |   1. Remove irrelevant boxes:
   |       1.1 All child boxes of a 'table-column' parent are treated as
if
   |           they had 'display: none'.
   |           [new]
   |       1.2 If a child C of a 'table-column-group' parent is not a
   |           'table-column' box, then it is treated as if it had
   |           'display: none'.
   |           [new]
   |       1.3 If a child C of a tabular container P is an anonymous
inline box
   |           that contains only white space, and its immediately
preceding
   |           and following siblings, if any, are proper table
descendants of P
   |           and are either 'table-caption' or internal table boxes,
   |           then it is treated as if it had 'display: none'.
   |           A box D is a proper table descendant of A if D can be a
descendant
   |           of A without causing the generation of any intervening
'table' or
   |           'inline-table' boxes.
   |           [current rule 5, adjusted to match bz]
   |       1.4 If a box B is an anonymous inline containing only white
space, and
   |           is between two immediate siblings each of which is either
an internal
   |           table box or a 'table-caption' box then B is treated as if
it had
   |           'display: none'.
   |           [new]
   |
   |   2. Generate missing child wrappers:
   |       2.1 If a child C of a 'table' or 'inline-table' box is not a
proper
   |           table child, then generate an anonymous 'table-row' box
around C
   |           and all consecutive siblings of C that are not proper table
children.
   |           [current rule 6]
   |       2.2 If a child C of a row group box is not a 'table-row' box,
then
   |           generate an anonymous 'table-row' box around C and all
consecutive
   |           siblings of C that are not 'table-row' boxes.
   |           [current rule 7]
   |       2.3 If a child C of a 'table-row' box is not a 'table-cell',
   |           then generate an anonymous 'table-cell' box around C and
all
   |           consecutive siblings of C that are not 'table-cell' boxes.
   |           [current rule 8]
   |
   |   3. Generate missing parents:
   |        3.1 For each 'table-cell' box C in a sequence of consecutive
internal
   |            table and 'table-caption' siblings, if C's parent is not a
   |            'table-row' then generate an anonymous 'table-row' box
around C
   |            and all consecutive siblings of C that are 'table-cell'
boxes.
   |            [current rule 1]
   |        3.2 For each proper table child C in a sequence of consecutive
proper
   |            table children, if C is misparented then generate an
anonymous
   |            'table' or 'inline-table' box T around C and all
consecutive
   |            siblings of C that are proper table children. (If C's
parent is
   |            an 'inline' box, then T must be an 'inline-table' box;
otherwise
   |            it must be a 'table' box.)
   |              * A 'table-row' is misparented if its parent is neither
   |                a row group box or a 'table' or 'inline-table' box.
   |              * A 'table-column' box is misparented if its parent is
neither
   |                a 'table-column-group' box nor a 'table' or
'inline-table' box.
   |              * A row group box, 'table-column-group' box, or
'table-caption'
   |                box is misparented if its parent is neither a 'table'
box nor
   |                an 'inline-table' box.
   |            [current rules 2, 3, 4]

~fantasai
Received on Wednesday, 31 March 2010 16:21:55 GMT

This archive was generated by hypermail 2.3.1 : Tuesday, 26 March 2013 17:20:25 GMT