W3C home > Mailing lists > Public > w3c-wai-ig@w3.org > April to June 2017

RE: Grid and aria-owns question

From: Matt King <a11ythinker@gmail.com>
Date: Fri, 28 Apr 2017 16:20:12 -0700
To: "'Bryan Garaventa'" <bryan.garaventa@ssbbartgroup.com>, 'Lars Holm Sørensen' <lhs@diversa.dk>, <w3c-wai-ig@w3.org>
Message-ID: <049201d2c075$fd697820$f83c6860$@gmail.com>


In your final suggestion, you have it right. The aria-readonly attribute is
most useful in  a grid in a spreadsheet-like application where there is a
mix of editable cells and read-only cells. Then you might want to consider
using aria-readonly as the way of distinguishing among them. 


But, aria-readonly is not the only way you can communicate a distinction
between editable and non-editable content.


For instance, if most of the grid is static text and links, instead of
marking all the static text readonly, which would be super annoying, in the
few cells where text is editable, you could put a button in that cell where
the button label is the cell text. Activating the button places the user in
an edit field. You can see this technique demonstrated in the second example
on this page:



On the other hand, if you are making something that is more like a
spreadsheet, then you probably want to put aria-readonly on cells where the
user cannot change the content.


The purpose of aria-readonly is not to make the affordances of the grid
itself perceivable. Generally speaking, there are many aspects of the design
of an application that tell users what capabilities are present.  So, users
will know from various aspects of the design and context whether or not they
are using something that is like a spreadsheet where they should be able to
change the content of any cell. 


Basically, putting aria-readonly on the grid is a short cut for propagation
to cells for situations where all cells need to have a value for
aria-readonly specified. Such grids are rare. 


The aria-readonly attribute, when applied to the grid,  says nothing about
the grid itself. So, one of the things I am hoping we get away from is
screen readers calling the grid itself editable or readonly. 


This is an issue I have been hoping the new 1.1 spec text as well as the
authoring practices design pattern and examples will clear up.




From: Bryan Garaventa [mailto:bryan.garaventa@ssbbartgroup.com] 
Sent: Friday, April 28, 2017 3:06 PM
To: Matt King <a11ythinker@gmail.com>; 'Lars Holm Sørensen'
<lhs@diversa.dk>; w3c-wai-ig@w3.org
Subject: RE: Grid and aria-owns question


“Also, you do not need aria-readonly.”


Hi Matt,

When would you use aria-readonly on a grid?


It was my understanding that when you have an interactive grid, if the cells
are not meant to do anything when activated it is readonly, but if they are
meant to do something when activated, then it is not.


E.G The following landing page shows a readonly interactive Grid:



To make this actionable, check the Selectable checkbox and if you wish
toggle aria-selected to checked as well, then focus back on the Grid and use
the Spacebar to toggle selection.


I guess it can be argued that this still doesn’t need aria-readonly, but
what about the case when you have a row that includes some cells that are
editable and others that are not, which is the case in this Grid if you
check the Editable checkbox, where the row header cells are not editable
wheras some of the others are.



Bryan Garaventa

Accessibility Fellow

SSB BART Group, Inc.

bryan.garaventa@ssbbartgroup.com <mailto:bryan.garaventa@ssbbartgroup.com> 

415.624.2709 (o)

www.SSBBartGroup.com <http://www.SSBBartGroup.com> 


From: Matt King [mailto:a11ythinker@gmail.com] 
Sent: Thursday, April 27, 2017 10:50 AM
To: 'Lars Holm Sørensen' <lhs@diversa.dk <mailto:lhs@diversa.dk> >;
w3c-wai-ig@w3.org <mailto:w3c-wai-ig@w3.org> 
Subject: RE: Grid and aria-owns question




This is a creative structure– very interesting.


Your use of aria-owns is correct. You have found a Firefox bug that you
should report to Mozilla.


It is not likely this will ever work in IE unless you can get screen reader
devs to make it a priority.


Note that you should have role=”presentation” on the `ul` elements.


Also, you do not need aria-readonly.


We now have a complete ARIA grid pattern and multiple functional examples in
the ARIA Authoring Practices that I recommend you read:



Matt King


From: Lars Holm Sørensen [mailto:lhs@diversa.dk] 
Sent: Thursday, April 27, 2017 7:40 AM
To: w3c-wai-ig@w3.org <mailto:w3c-wai-ig@w3.org> 
Subject: Grid and aria-owns question


Hello WAI list


I am trying to construct a simple data table, from some list data by
applying role=”grid”, role=”row”, role=”columnheader”, role=”gridcell” and


In my simple example I try to construct a grid with 2 columns and 3 rows.
Column 1 for fruits and column 2 for vegetables.

The first row is a header row and then follows two rows with data.



When testing with Jaws I get the expected result in Chrome. A grid with 2
columns and 3 rows and I can navigate it using the Jaws table navigation


However in IE and FF I get different results.


They both show the header row perfectly.


Then follows two rows where each row only has a single column, but still in
that single column it reads the data from both column 1 and column 2.


Then follows four columns, each showing data from one of the four gridcells.


Here comes the Jaws output from going through the grid by just pressing down
arrow IN ff:


grid with 2 columns and 5 rows
Apple Potato
Banana Cucumber
grid end



Here comes the code:


<div role="grid" aria-readonly="true">


<!-- The header row. -->

<div role="row">


<li role="columnheader">Fruits</li>

<li role="columnheader">Vegetables</li>



<!-- eof header row-->



<!-- Add content to row one in the accessibility tree by using aria-owns.-->

<div role="row" id="row1" aria-owns="row1_col1 row1_col2"></div>


<!-- Add content to row to in the accessibility tree by using aria-owns.-->

<div role="row" id="row2" aria-owns="row2_col1 row2_col2"></div>




<!-- The two lists with the data we want to go into the grid.-->

<ul   id="col1">

<li role="gridcell" id="row1_col1">Apple</li>

<li role="gridcell" id="row2_col1">Banana</li>



<ul  id="col2">

<li role="gridcell" id="row1_col2">Potato</li>

<li role="gridcell"  id="row2_col2" >Cucumber</li>




<!-- eof grid-->



Do you have any ideas why it doesn’t  work the way I expect it to in IE and


Am I using aria-owns in an inappropriate way?



Best regards:

Lars Holm Sørensen 




De bedste hilsner

Lars Holm Sørensen

Diversa ApS

Tlf: 25 21 17 41

www.Diversa.dk <http://www.diversa.dk/> 


Udelukker du 10% - 20% af brugerne fra din hjemmeside? Se videoen!



(image/png attachment: image001.png)

Received on Friday, 28 April 2017 23:20:50 UTC

This archive was generated by hypermail 2.3.1 : Friday, 28 April 2017 23:20:50 UTC