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Re: DHTML Keyboard Meeting: discussion about grid navigation

From: Earl Johnson <earlj.biker@gmail.com>
Date: Thu, 21 Aug 2008 11:24:13 -0700
Message-ID: <f9806ac80808211124k7994785bu2ce8e66a71fd1ab5@mail.gmail.com>
To: "Schnabel, Stefan" <stefan.schnabel@sap.com>
Cc: wai-xtech@w3.org, donald.evans@corp.aol.com, "Keim, Oliver" <oliver.keim@sap.com>, "Schaus, Martin" <martin.schaus@sap.com>
Hi Stefan;

This navigation model uses the Tab key to move input focus out of a grid in
display only mode. or to the next grid cell [in edit mode]. The input focus
moves in a fashion closer to how it would work if javascript was turned off..
The data table grid name suggests spreadsheet-like behavior to me.
   - If this is the type data table grid your write up refers to then what
happens when an arrow key is pressed?

I believe a grid in grid type scenario was discussed and is being used in a
product:
   - I can see how focus would move up a grid level when it's pressed in the
writeup but how does the user navigate down into a child grid?
       = Maybe a Tab press move focus down then back up if a grid cell
contains a grid?

To all - it seemed to me the discussion went between navigating from grid to
grid and navigating in tabular data formatted in a spreadsheet-like format.
   - Is one goal to define how to travel between data table grids and from
cell to cell in a data table grid?
      = The two types of grid navigation, intra and extra, should be clearly
separated in the styleguide if yes.

Earl


On Thu, Aug 21, 2008 at 1:02 AM, Schnabel, Stefan
<stefan.schnabel@sap.com>wrote:

>  Hi all,
>
> This is what I understood from Tuesdays discussion what makes sense for
> "SAP and Oracle type grids" having one potentially editable item per cell:
>
> Begin Edit Mode:
>
> - Enter or F2 on editable cell
>
> - Alphanumeric key on editable cell
>
> End Edit Mode:
>
> - Enter to confirm last changes
>
> - ESC to undo last changes
>
> TAB in Display-Only Mode:
>
> - Leaves Grid
>
> TAB in Edit Mode:
>
> - Confirms last changes, moves to the next editable cell and activates its
> edit mode
>
> - If next cell is not editable, simply focuses next cell*** and restores
> Display-Only mode*
>
>  If we allow for grids with MORE than one item per grid cell (Jon
> Gunderson idea of grids) we need to*** change the TAB meaning entirely.***
> * Here, TAB here is not any more used to leave and re-enter the grid.*****
>
> ***Therefore, w****e need an additional skipping key* to leave anytime the
> grid and focus the next element after the grid and an inverse key
> combination to restore the focus on the last position in the grid. We have
> already proposed (and implemented, it works!):
>
> ->  CTRL+TAB / SHIFT+CTRL+TAB (or F6 / SHIFT+F6) for that
>
> The idea is as follows:
>
> 0) Navigation between grid cells with multiple items is done with arrow
> keys as usual
>
> 1) TAB shall be used to *enter* a grid cell having multiple items
>
> 2) TAB shall be used for navigation within the different cell items of a
> grid cell
>
> 3) TAB will *exit* this cell also again and focus the next cell
>
> 4) Navigation with arrow keys will be re-activated (if next cell contains
> also multiple items, it is necessary to press TAB again to enter)
>
> Note that this approach requires that there  *should* be a (custom)
> property of a grid cell that it contains multiple items and the JS/User
> Agent keyboard handler will adjust TAB key behavior accordingly (on single
> content, TAB will simply go to next cell like arrow right)
>
> Of course, the skipping approach with CTRL+TAB instead of TAB can be also
> been applied to ordinary "SAP grids" as we actually already do.
>
> Best Regards
>
> Stefan
>
> *****Dr. Stefan Schnabel*
> Accessibility Expert
> User Experience - Accessibility
>
> *******SAP AG*
> Dietmar-Hopp-Allee 16,
>
> 69190 Walldorf, Germany
>
> T: +49 (6227) 7-65652
> F: +49 (6227) 78-29877
>
> ***mailto:stefan.schnabel@sap.com* <stefan.schnabel@sap.com>
>
>
> W: ***www.sap.com*; ***http://www.sapdesignguild.org*<http://www.sapdesignguild.org>
>
>
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Received on Friday, 22 August 2008 21:55:39 UTC

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