[access-uk] Re: Firefox, Internet Explorer, and MSAA [was: Re: Re: Dominos Pizza website]

  • From: "Alasdair King" <alasdairking@xxxxxxxxx>
  • To: access-uk@xxxxxxxxxxxxx
  • Date: Sat, 18 Aug 2007 13:21:30 +0100

Steve, forgive me for putting words in your mouth...

Firefox's standards-compliance is irrelevant: it's the ability of
Steve's screenreader to use it that is the issue. His screenreader
will have been built to handle Internet Explorer's presentation of web
pages, and Firefox support has been added at a later date and isn't so
advanced. Firefox support will improve in time if users demand it and
its MSAA implementation doesn't change. Ideally, in terms of support,
its MSAA implementation would be identical to Internet Explorer's,
since this is the de facto standard and the reference implementation
of a web browser for screenreader developers.

I use Firefox myself, but I'm sighted. Much better browser for me.

Best wishes,
Alasdair


On 8/18/07, Benjamin Hawkes-Lewis <bhawkeslewis@xxxxxxxxxxxxxx> wrote:
> Steve Nutt wrote:
>
> > It is one reason I don't use Firefox.  It's MSAA rendering is somewhat bad
> > compared to IE.
>
> Firefox's parsing of HTML into a Document Object Model (DOM) and
> application of JavaScript to that DOM is more standards compliant, and
> its subsequent exposure of that DOM to MSAA is substantially more
> sophisticated than Internet Explorer's:
>
> http://www.mozilla.org/access/windows/at-apis
>
> How did you conclude Firefox's use of MSAA was "somewhat bad"? Did you
> run a side-by-side comparison of what Firefox and IE reveal from roughly
> the same DOM in Microsoft's MSAA inspection tools?
>
> http://urlx.org/microsoft.com/1c4f7
>
> http://urlx.org/microsoft.com/83d8f
>
> Note it needs to be roughly the same DOM, not just the same URL, since:
>
> 1. Sometimes different content is served to different browsers at the
> same URL.
>
> 2. IE and Firefox construct different DOMs from the same standards-based
> source markup, styles, and code. (They have different sets of bugs, and
> Firefox has greater support for standards.)
>
> 3. Hacks are often used to target bits of the source markup, styles, and
> code at particular browsers.
>
> If you did do this, what was your test-case and what problems did you find?
>
> > It misses links, mislabels them sometimes,
>
> Can you give any examples of this? Have you reported them as bugs?
>
> https://bugzilla.mozilla.org/
>
> --
> Benjamin Hawkes-Lewis
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-- 
Alasdair King
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