Re: [platform-swt-dev] SWT_AWT and Accessibility

[Steve Northover <Steve_Northover@xxxxxxxxxx>]

It still makes sense to have a test
case and bug report to track this issue and confirm that it does not work.

Richard Schwerdtfeger <schwer@xxxxxxxxxx>
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05/09/2007 04:41 PM

Please respond to
"Eclipse Platform SWT component developers list."        <platform-swt-dev@xxxxxxxxxxx>

To	"Eclipse Platform SWT component developers list." <platform-swt-dev@xxxxxxxxxxx>
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Subject	Re: [platform-swt-dev] SWT_AWT and Accessibility

Swing applications, currently, interoperate with assistive
technologies through the Java Acces Bridge. Assistive technologies access
Swing applications through a special Java access bridge dll provided by
Sun. This is not how assistive technologies access Eclipse applications.
Eclipse applications interoperate with assistive technologies, on Windows,
using MSAA, offscreen modeling (screen scraping), and propietary APIs used
by ActiveX plug-ins. Even if you installed the bridge, this would be problematic
for ATs as they would not be able to handle the mix between the access
bridge dll and MSAA. 

We have developed an accessibility API extension to MSAA, called IAccessible2
which when combined with MSAA will give you the same level of rich interoperability
as Java. We hope to implement support for it in Eclipse along with Linux
accessibility support. Sun would also need to do a mapping from the Java
Accessibility API ( referred to by Jamie) and MSAA/IAccessible2. This would
provide the consistent framework you desire. Sun has not made that investment
at this time. IAccessible2 should be fully supported by JAWS and Window-Eyes
in their next releases.

So, it is recommended that Swing not be used in Eclipse applications if
you would like them to be accessible. If possible, we recommend using an
existing SWT control. 

Rich


Rich Schwerdtfeger
Distinguished Engineer, SWG Accessibility Architect/Strategist
Chair, IBM Accessibility Architecture Review Board
blog: http://www.ibm.com/developerworks/blogs/page/schwer

Steve
Northover <Steve_Northover@xxxxxxxxxx>

Steve Northover <Steve_Northover@xxxxxxxxxx>
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05/09/2007 03:18 PM

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Subject	Re: [platform-swt-dev] SWT_AWT and Accessibility

Can you confirm that it is working properly running a small Swing only
example? If so, please create a bug report with a stand alone snippet.

jamie.guillemette@xxxxxx
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05/09/2007 04:10 PM

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Subject	[platform-swt-dev] SWT_AWT and Accessibility

Hi All,

Im trying to find out if the SWT_AWT bridge allows accessibility data to
flow from Swing components back to SWT and out to Accessibility
applications.

I have an eclipse application that uses swing for many views. The SWT_AWT
bridge is used to allow the swing panel to be embedded in the views.

Our client relies on Jaws a screen reader application.

In Swing we would call the method getAcessibleContext().setName()  or
setDescription()  on any swing component. This provides the details
the
screen reader needs
to have to work properly.

So far my intial attempts at making this work within our eclipse plugin
have failed. Our SWT components / frames work perfectly.

Does anyone know :

a) is accessiblity supported in swing panels via SWT_AWT?

b) if not is there a best practice work around?



Thanks,
Jamie M. Guillemette
IT Solutions Developer
TD Enterprise Technology Solutions
275 Dundas Street, 11th Floor, London
(519) 663-1952


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