Re: [orca-list] Keybindings for ARIA landmark roles

[Willie Walker <William Walker Sun COM>]

Hi All:

We hear your desires loud and clear and are looking at ways to make this 
performant.  Right now, it can take a very long time to gather this 
information, however, and we have decided to err on the side of trying 
to reduce the number of things that slow Orca down.

BTW, counting up all the landmarks on a page has the potential to be a 
very expensive operation -- much worse than counting up thing like 
links, headings, etc.

As I mention, however, we are looking at ways to potentially make things 
more performant in Orca, which could give us a performance boost overall 
and open the door for other things like the above.

Will

Steve Holmes wrote:
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> I agree; I would not only want to know some characteristics of the
> page but also be told when I navigate into things like forms or
> tables.  Especially tables because then you know you can start using
> the table navigation features.  But this probably  slightly off topic
> from this thread but since the page contents issue came up...
>
> I have run into Krichnakant's situation numerous times when trying to
> find headings.  I guess one could press the numpad-enter key twice to
> hear the counts and your landmarks count could go in there.  But I
> forget half the time to hit that key sequence but that does get us
> around having to have it built in the page loading sequence.
>
> On Fri, Jan 30, 2009 at 11:25:57PM +0530, Krishnakant wrote:
> > hi will,On Fri, 2009-01-30 at 10:14 -0500, Willie Walker wrote:
> > > Hi Krishnakant:
> > >
> > > Determining if there are landmarks can be an expensive operation and can 
> > > slow performance down.  So, it might be best to only do landmark 
> > > operations when the user explicitly requests them.
> > But how does user know if there are area landmarks defined by the
> > designer of that page in the first place?
> >
> > The first rule of Accessibility with Human Computer Interface Design is
> > to facilitate user's anticipation about the structure of the page.
> >
> > For example Imagine if there is a large page and I want to know if there
> > are headings.  Now, i press h and i wait for a few secons or more
> > depending on the size of the page, just to hear "wrapping to top, no
> > more headings found ".
> >
> > Had I known that the page has 0 headings, I won't try the command in the
> > first place which any ways gave orca a performance hit.
> >
> > Same thing will apply for landmarks and I believe every one agrees that
> > on a big page, orca will take a performance hit and would slow down the
> > system and overall response because orca will scann the entire page for
> > the structural element which the user are trying to search.
> >
> > happy hacking.
> > Krishnakant.
> > > In any case, what I'm hearing is that you are joining the list of users 
> > > who want default keybindings.  Do you think the 'm' key is reasonable 
> > > for this?
> > >
> > > Will
> > >
> > > Krishnakant wrote:
> > > > On Fri, 2009-01-30 at 09:46 -0500, Willie Walker wrote:
> > > > > Hi Krishnakant:
> > > > >
> > > > > The content provider provides the landmarks as part of the markup.  What 
> > > > > the Orca feature does is allow the users to navigate between them quickly.
> > > > >
> > > > > Will
> > > > hi will,
> > > > this works perfectly.
> > > > Just a quick suggestion, as soon as the user lands on a certain web
> > > > page, we must announce if there are landmarks set by the page designer
> > > > so that the user knows that the move to landmark (next and previous )
> > > > can be useful on this page.
> > > >
> > > > Since orca is locating landmarks, i believe orca knows that there are
> > > > defined landmarks on the page.
> > > > I believe this is the way the scrip for mozila works?  or is it that the
> > > > first time user presses the move to next landmark key that orca finds if
> > > > there are any landmarks?
> > > >
> > > > happy hacking.
> > > > Krishnakant.
> > _______________________________________________
> > Orca-list mailing list
> > Orca-list gnome org
> > http://mail.gnome.org/mailman/listinfo/orca-list
> > Visit http://live.gnome.org/Orca for more information on Orca
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