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From: Bryan Garaventa
Date: Sat, Nov 09 2013 4:18PM
Subject: Regarding expected functionality for an ARIA editable data grid control
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Hi, I'm currently designing an ARIA Data Grid control, which is going to do all sorts of stuff. The intent is to make this as scalable and as accessible as absolutely possible for desktop and mobile platforms for keyboard and screen reader users. It will also normalize equally across jQuery, Dojo, and MooTools.

I have a question though about the expected functionality of pagination.

Pagination is handled automatically, where you can arrow down or up past the bounds of the rendered grid rows and cause the previous or next page to load automatically for infinite scrolling, and the same is true by pressing PageUp or PageDown to navigate by page.

Pressing Control+Home and Control+End though will render the first and last pages respectively.

So if you press Control+Home, the row that receives focus is row 1 on the first page.

When Control+End is pressed though, would it make more sense to set focus to row1 on the last page, or on the last row on the last page?

It's mostly done, but more details about what the grid is supposed to do are available at
http://lnkd.in/bj465ZD

Thanks,
Bryan

From: Birkir R. Gunnarsson
Date: Sun, Nov 10 2013 1:44PM
Subject: Re: Regarding expected functionality for an ARIA editable data grid control
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I would say that ctrl-end puts focus on the last row of the last page.
As long as ctrl-page up will move to the first row of that page.
This is more in line with the expected functionality of this key
combination in other situations, such as in a text editor.
Keep up the good work.
Cheers
-Birkir
Birkir Gunnarsson
Accessibility SME | Deque Systems


On 11/9/13, Bryan Garaventa < = EMAIL ADDRESS REMOVED = > wrote:
> Hi, I'm currently designing an ARIA Data Grid control, which is going to do
> all sorts of stuff. The intent is to make this as scalable and as accessible
> as absolutely possible for desktop and mobile platforms for keyboard and
> screen reader users. It will also normalize equally across jQuery, Dojo, and
> MooTools.
>
> I have a question though about the expected functionality of pagination.
>
> Pagination is handled automatically, where you can arrow down or up past the
> bounds of the rendered grid rows and cause the previous or next page to load
> automatically for infinite scrolling, and the same is true by pressing
> PageUp or PageDown to navigate by page.
>
> Pressing Control+Home and Control+End though will render the first and last
> pages respectively.
>
> So if you press Control+Home, the row that receives focus is row 1 on the
> first page.
>
> When Control+End is pressed though, would it make more sense to set focus to
> row1 on the last page, or on the last row on the last page?
>
> It's mostly done, but more details about what the grid is supposed to do are
> available at
> http://lnkd.in/bj465ZD
>
> Thanks,
> Bryan
> > > >

From: Bryan Garaventa
Date: Sun, Nov 10 2013 4:09PM
Subject: Re: Regarding expected functionality for an ARIA editable data grid control
← Previous message | Next message →

Thanks, that makes sense to me as well.

Unfortunately I'm coming up against browser/AT key interception issues, so
the choices are somewhat limited.

For example, ctrl+PageUp/PageDown won't work. It works fine from the
keyboard, but if you have JAWS running and Applications Mode is active, the
screen reader intercepts this combination and it never gets passed to the
grid. The same is true for ctrl+Up/Down as well.

Similarly, alt+Home can't be used because the browser intercepts this and
opens the home page, and alt+Left/Right will activate the Back and Forward
buttons respectively.

So here are the keyboard combinations that appear to work best in a
focusable grid:

Up/Down = Navigate by row
alt+Up/Down = Navigate to the first or last row on the current page
Left/Right = Navigate by column
Home/End = Navigate to the first or last column on the current row
ctrl+Home/End = Navigate to the first row on the first page or the last row
on the last page
PageUp/PageDown = Navigate by page
alt+PageUp/PageDown = Navigate to the first row on the first or last page

These key combinations appear to have the least amount of browser and AT
conflicts.

----- Original Message -----
From: "Birkir R. Gunnarsson" < = EMAIL ADDRESS REMOVED = >
To: "WebAIM Discussion List" < = EMAIL ADDRESS REMOVED = >
Sent: Sunday, November 10, 2013 12:44 PM
Subject: Re: [WebAIM] Regarding expected functionality for an ARIA editable
data grid control


>I would say that ctrl-end puts focus on the last row of the last page.
> As long as ctrl-page up will move to the first row of that page.
> This is more in line with the expected functionality of this key
> combination in other situations, such as in a text editor.
> Keep up the good work.
> Cheers
> -Birkir
> Birkir Gunnarsson
> Accessibility SME | Deque Systems
>
>
> On 11/9/13, Bryan Garaventa < = EMAIL ADDRESS REMOVED = > wrote:
>> Hi, I'm currently designing an ARIA Data Grid control, which is going to
>> do
>> all sorts of stuff. The intent is to make this as scalable and as
>> accessible
>> as absolutely possible for desktop and mobile platforms for keyboard and
>> screen reader users. It will also normalize equally across jQuery, Dojo,
>> and
>> MooTools.
>>
>> I have a question though about the expected functionality of pagination.
>>
>> Pagination is handled automatically, where you can arrow down or up past
>> the
>> bounds of the rendered grid rows and cause the previous or next page to
>> load
>> automatically for infinite scrolling, and the same is true by pressing
>> PageUp or PageDown to navigate by page.
>>
>> Pressing Control+Home and Control+End though will render the first and
>> last
>> pages respectively.
>>
>> So if you press Control+Home, the row that receives focus is row 1 on the
>> first page.
>>
>> When Control+End is pressed though, would it make more sense to set focus
>> to
>> row1 on the last page, or on the last row on the last page?
>>
>> It's mostly done, but more details about what the grid is supposed to do
>> are
>> available at
>> http://lnkd.in/bj465ZD
>>
>> Thanks,
>> Bryan
>> >> >> >>
> > >

From: Don Mauck
Date: Mon, Nov 11 2013 9:53AM
Subject: Re: Regarding expected functionality for an ARIA editable data grid control
← Previous message | Next message →

Bryan --
I agree that the focus should be on the first column of the last row, this sounds good, I'd be interested in the final results.

From: Bryan Garaventa
Date: Mon, Nov 11 2013 2:00PM
Subject: Re: Regarding expected functionality for an ARIA editable data grid control
← Previous message | No next message

I'll be happy to share it when complete.

In the meantime, I've discovered a few NVDA bugs that I'll need to report
later when I have the demos ready to go.

E.G

NVDA won't enter Applications Mode when encountering focusable Gridcell
elements within an ARIA Grid, not when Tabbing through active elements, nor
by pressing Enter on a focusable Gridcell, nor when the focus() method is
used to manually set focus to a Gridcell.

When in Browse Mode, you cannot use the table navigation commands such as
control+alt+Left/Up/Right/Down to navigate the cells within the ARIA Grid
table, even though the underlying markup is a standard data table with
correctly implemented headers .

When Applications Mode is manually invoked using Insert+Space, you can then
use the standard arrow keys and other commands to navigate the ARIA Grid,
however column header cells identified using the 'headers' attribute on the
Gridcell element are not announced when navigating left and right between
cells on the same row,
and when arrowing up and down between rows, adjacent cell content is
announced even though these extra cells do not have focus.

Confirmed using the latest public version of NVDA in Firefox.

----- Original Message -----
From: "Don Mauck" < = EMAIL ADDRESS REMOVED = >
To: "WebAIM Discussion List" < = EMAIL ADDRESS REMOVED = >
Sent: Monday, November 11, 2013 8:53 AM
Subject: Re: [WebAIM] Regarding expected functionality for an ARIA editable
data grid control


> Bryan --
> I agree that the focus should be on the first column of the last row, this
> sounds good, I'd be interested in the final results.
>