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Accessibility for custom SWT widgets [message #461144]

Sat, 17 September 2005 00:51

Bo Majewski

Messages: 17
Registered: July 2009

Junior Member

I am building a custom SWT widget. It supports "open" and "close"
operations (toggle) when clicked. I need it to support the same with
appropriate key combinations (say close and open with <- and -> arrows
and space bar for toggle). What is the proper way of implementing this? My
component extends Composite, so I can getAccessible() on it. It seems that
AccessibleControlListener is what I need, but how do I code "invoke
close() operation when you see <-"? Thanks in advance for any help.

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Re: Accessibility for custom SWT widgets [message #461196 is a reply to message #461144]

Mon, 19 September 2005 13:26

Grant Gayed

Messages: 2150
Registered: July 2009

Senior Member

Hi Bo,

Actually the accessibility listeners are for specifying/modifying
information that's provided to screen readers and magnifiers, such as
gnopernicus. Unless I'm misreading your question, I think this falls
outside of what you're trying to do.

You can just use a KeyDown listener to listen for arrow keys and space, and
whenever they're pressed while your widget has focus then you'll be notified
and can act accordingly. For a good article on writing custom widgets see
http://eclipse.org/articles/Article-Writing%20Your%20Own%20W idget/Writing%20Your%20Own%20Widget.htm .

Please follow up if I haven't quite addressed what you're trying to do,
thanks.

Grant

"Bo Majewski" <bo@n0spam.majewski.com> wrote in message
news:pan.2005.09.17.00.51.41.869966@n0spam.majewski.com...
> I am building a custom SWT widget. It supports "open" and "close"
> operations (toggle) when clicked. I need it to support the same with
> appropriate key combinations (say close and open with <- and -> arrows
> and space bar for toggle). What is the proper way of implementing this? My
> component extends Composite, so I can getAccessible() on it. It seems that
> AccessibleControlListener is what I need, but how do I code "invoke
> close() operation when you see <-"? Thanks in advance for any help.

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Re: Accessibility for custom SWT widgets [message #461261 is a reply to message #461196]

Mon, 19 September 2005 20:20

Bo Majewski

Messages: 17
Registered: July 2009

Junior Member

On Mon, 19 Sep 2005 09:26:34 -0400, Grant Gayed wrote:

> Actually the accessibility listeners are for specifying/modifying
> information that's provided to screen readers and magnifiers, such as
> gnopernicus.

Thanks for the explanation. I guess I will stick with what I was doing and
what you suggested as a solution: using key listeners to provide keyboard
equivalents to mouse actions.

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