[Gtk] Implement atk_table_get_column_header

• Component: Accessibility
• Status: RESOLVED FIXED

[Joanmarie Diggs]

The fixes for bug 25534 implemented the bulk of AtkTable. Support for atk_table_get_column_header was removed due to being broken:

* when a cell was returned, it did claim to be in the proper row, but
* it didn't have a child of ROLE_TEXT with the cell contents as expected, and
* often a cell wasn't returned

What's puzzling to me is that the nearly identical implementation for atk_table_get_row_header works like a charm. Unless I'm just missing something (a perfectly reasonably possibility), this might be due to "non-traditional" table hierarchy exposed to Atk apps by WebKitGtk (for which I've opened bug 30895).

[Joanmarie Diggs]

Created attachment 58654 [details]
test case

[Joanmarie Diggs]

Created attachment 58655 [details]
Screenshot with Accerciser showing expected results

(hoping a picture is worth a thousand words. :-) )

[Joanmarie Diggs]

Created attachment 58657 [details]
possible fix?

Not flagging for review for a couple of reasons:

1. No test.

2. Mario had indicated an interest in working on some of these bugs blocking Orca support (yay! thanks!!). One less thing to worry about. :-) So really, I'm attaching this in the hopes that he'll take this bug, refine the patch as needed, and propose a proper fix with a test. :-)

[Mario Sanchez Prada]

(In reply to comment #3)
> Created an attachment (id=58657) [details]
> possible fix?
> 
> Not flagging for review for a couple of reasons:
> 
> 1. No test.
> 
> 2. Mario had indicated an interest in working on some of these bugs blocking Orca support (yay! thanks!!). One less thing to worry about. :-) So really, I'm attaching this in the hopes that he'll take this bug, refine the patch as needed, and propose a proper fix with a test. :-)

That's the plan but first I need to finish some pending things on other bugs, such as bug 36128, which is btw blocker for this one (so it makes sense to finish work first there :-))

[Mario Sanchez Prada]

Created attachment 59528 [details]
Full patch proposal (with unit test)

Hi, after spending most of the time struggling with another bug found while working on this one [*], now that one is fixed I was finally able to finish Joanmarie's work by adding a new unit test in testatk, as well as fixing some small issues in get_row_header() to keep it coherent with get_column_header(), and make it work well.

Hence, attaching now the patch that fixes this stuff. Hope you like it.

[*] https://bugs.freedesktop.org/show_bug.cgi?id=28659

[Xan Lopez]

Comment on attachment 59528 [details]
Full patch proposal (with unit test)

Looks good.

[Mario Sanchez Prada]

Created attachment 59535 [details]
Some cleanup ON TOP of the full patch proposal

Get rid of g_timeout_add() by using g_idle_add() instead. This patch must be applied after the previos one "Full patch proposal (with unit test)".

[Xan Lopez]

Comment on attachment 59535 [details]
Some cleanup ON TOP of the full patch proposal

I'm Krusty the Klown and I approve this message.

[WebKit Commit Bot]

Comment on attachment 59528 [details]
Full patch proposal (with unit test)

Clearing flags on attachment: 59528

Committed r61884: <http://trac.webkit.org/changeset/61884>

[WebKit Commit Bot]

Comment on attachment 59535 [details]
Some cleanup ON TOP of the full patch proposal

Clearing flags on attachment: 59535

Committed r61893: <http://trac.webkit.org/changeset/61893>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.