Re: Action-1293 Proposal

Hi. I still dislike the definition of aria-colindex

"Defines an element's cell or gridcell column number or position in the
current set of columns table"

since it allows to move table cells in the table. You can easily do sorting:

<table role="grid">
  <row>
    <td role="gridcell" aria-colindex="8" aria-csize="16">A</td>
    <td role="gridcell" aria-colindex="7" aria-csize="16">B</td>
    <td role="gridcell" aria-colindex="6" aria-csize="16">C</td>
    <td role="gridcell" aria-colindex="5" aria-csize="16">D</td>
  </row>
...
</table>

This statement is incorrect in case of IA2 and ATK

"This property is not automatically caldulated by the user agent."

because every cell has to have column and row index in these APIs, so if
it's not provided by ARIA then the browser has to calculate it.

Same concerns are applicable to aria-rowindex property.

Thanks.
Alex.

On Mon, Mar 9, 2015 at 10:46 AM, Richard Schwerdtfeger <schwer@us.ibm.com>
wrote:

> for role="row" add aria-rowindex and aria-rsize
> for role="cell" and gridcell add aria-colindex, and aria-csize
>
> *aria-colindex** (property)*
>
> Defines an element's cell or gridcell column number or position in the
> current set of columns table, grid, or treegrid. See related aria-csize.
>
> This property is not automatically caldulated by the user agent. The
> default value is -1 which means indeterminant.
>
> The following example shows columns 5 through 8 in a set of 16.
>
> <table role="grid">
>   <row>
>      <td role="gridcell" aria-colindex="5" aria-csize="16">A</td>
>      <td role="gridcell" aria-colindex="6" aria-csize="16">B</td>
>     <td role="gridcell" aria-colindex="7" aria-csize="16">C</td>
>     <td role="gridcell" aria-colindex="8" aria-csize="16">D</td>
>   </row>
> ...
> </table>
>
>
> *aria-rowindex** (property)*
>
> Defines a *element* <http://www.w3.org/TR/wai-aria-1.1/#dfn-element>'s
> row number or position in the current set of rows table, grid, or treegrid.
> It is not required if all row elements in the set are present in the DOM.
> See related aria-rsize
>
> If all items in a set are present in the document structure, it is not
> necessary to set this *attribute*
> <http://www.w3.org/TR/wai-aria-1.1/#dfn-attribute>, as the *user agent*
> <http://www.w3.org/TR/wai-aria-1.1/#dfn-user-agent> can automatically
> calculate the set size and position for each item. However, if only a
> portion of the set is present in the document structure at a given moment,
> this *property* <http://www.w3.org/TR/wai-aria-1.1/#dfn-property> is
> needed to provide an explicit indication of an element's position.
>
> When applied to an element having a role of "row" the user agent must
> expose the proprety to assistive technologies on all descendant cells and
> gridcells in addition to the row it is applied to.
>
> The following example shows rows 3 through 5 in a set of 5.
>
> <table>
>   <row aria-rowindex="3" aria-rsize="5">
>      <td>A</td>
>      <td>B</td>
>      <td>C</td>
>   </row>
>   <row aria-rowindex="4" aria-rsize="5">
>      <td>A</td>
>      <td>B</td>
>      <td>C</td>
>   </row>
>   <row aria-rowindex="5" aria-rsize="5">
>      <td>A</td>
>      <td>B</td>
>      <td>C</td>
>   </row>
> </table>
>
> *aria-csize** (property) *
>
> Defines the number of columns in the current table or grid's set of
> columns.
>
> This *property* <http://www.w3.org/TR/wai-aria-1.1/#dfn-property> is
> marked on the members of a set, not the container element that collects the
> members of the set. To orient the user by saying an element is "item X out
> of Y," the *assistive technologies*
> <http://www.w3.org/TR/wai-aria-1.1/#dfn-assistive-technologies> would use
> X equal to the aria-colindex attribute and aria-csize equal to the
> aria-colsize attribute.
>
> This property is not automatically caldulated by the user agent. The
> default value is -1 which means indeterminate.
>
> The following example shows items 5 through 8 in a set of 16.
>
> <table role="grid">
>   <row>
>      <td role="gridcell" aria-colindex="5" aria-csize="16">A</td>
>      <td role="gridcell" aria-colindex="6" aria-csize="16">B</td>
>     <td role="gridcell" aria-colindex="7" aria-csize="16">C</td>
>     <td role="gridcell" aria-colindex="8" aria-csize="16">D</td>
>   </row>
> ...
> </table>
>
>
> *aria-rsize** (property)*
>
> Defines the number of rows in the current set of rows within a table,
> grid, or treegrid. Not required if all elements in the set are present in
> the DOM. See related *aria-posinset*
> <http://www.w3.org/TR/wai-aria-1.1/#aria-posinset>.
>
> This *property* <http://www.w3.org/TR/wai-aria-1.1/#dfn-property> is
> marked on rows, or cells or gridcells contained within the containing row.
> To orient the user by saying an element is "item X out of Y," the *assistive
> technologies*
> <http://www.w3.org/TR/wai-aria-1.1/#dfn-assistive-technologies> would use
> X equal to the aria-rowindex *attribute*
> <http://www.w3.org/TR/wai-aria-1.1/#dfn-attribute> and Y equal to the
> aria-rsize attribute.
>
> If all items in a set are present in the document structure, it is not
> necessary to set this property, as the *user agent*
> <http://www.w3.org/TR/wai-aria-1.1/#dfn-user-agent> can automatically
> calculate the set size and position for each item. However, if only a
> portion of the set is present in the document structure at a given moment
> (in order to reduce document size), this property is needed to provide an
> explicit indication of set size.
>
> When applied to an element having a role of "row" the user agent must
> expose the proprety to assistive technologies on all descendant cells and
> gridcells unless overridden by  applying the property directly to a
> descendant cell or gridcell.
>
> The following example shows rows 3 through 5 in a set of 5.
>
> <table>
>   <row aria-rowindex="3" aria-rsize="5">
>      <td>A</td>
>      <td>B</td>
>      <td>C</td>
>   </row>
>   <row aria-rowindex="4" aria-rsize="5">
>      <td>A</td>
>      <td>B</td>
>      <td>C</td>
>   </row>
>   <row aria-rowindex="5" aria-rsize="5">
>      <td>A</td>
>      <td>B</td>
>      <td>C</td>
>   </row>
> </table>
>
> Note: need to coordinate with Steve Faulkner new native host language
> semantics for TD and Table elements.
>
>
> Rich Schwerdtfeger
>
>