Add + and - key options for tree expand/collapse (remove left/right arrow?)

[davidb]

This request came from the Orca screen reader team through Scott Haeger. Currently arrowing right/left will open and close. This ticket proposes to add + and -.

[davidb]

possible fix, but hardcoded charCode checking.

[guest]

After communicating with Will Walker, the Orca team would like to not just add the + and - keys for expanding and collapsing, but would also like to eliminate the use of the arrow keys for this function :) In fact, the following was taken from my Orca bug http://bugzilla.gnome.org/show_bug.cgi?id=462156 related to this topic:

I think we should extend the request to the Dojo team to use +/- for anything that does expanding/collapsing. The team seems accommodating, which is great. :-) IMO, the keyboard gestures should be consistent across the various widgets and they should not conflict with gestures used for other common operations (e.g., caret navigation and text selection). In addition, Eitan also noted that the use of arrow keys can be confusing for people from right-to-left locales.

[davidb]

Notes:

We should look for other cases of expand/collapse within our widget set to make sure we are consistent.

Using left/right arrowing for collapse/expand activity is conflicting with left/right arrowing for caret navigation. We should consider removing the use of left/right arrowing.

[becky]

I would be very concerned about removing left/right key as that is the standard behavior for windows tree controls so those users would be confused when left/right didn't work. This issue should be brought to the HTML style guide working group (wai-xtech.org)

[davidb]

Original request has been reconsidered and is no longer needed. Closing as wontfix.