1901175 - No event fired for changes to XUL tooltiptext attribute

Status: NEW

(Core :: Disability Access APIs, defect)

Description

[James Teh [:Jamie]]

STR (with a screen reader, assuming browser is set to English):

1. Open https://it.wikipedia.org/
2. Focus the address bar.
3. Press tab and then right arrow to focus the "Translate this page" button.
4. Press space to activate it.
5. Press the Translate button.
   • Observe: Focus should return to the translate button on the toolbar, but it should now be reported by the screen reader as "Translation in progress".
6. Wait 10 seconds.
   • Expected: Within a few seconds, the screen reader should report "Page translated from Italian to English" as the name of the button changes.
   • Actual: Nothing gets reported.
7. Have the screen reader report the button again; e.g. by pressing left arrow, then right arrow.
   • Observe: The screen reader reports "Page translated from Italian to English".

This occurs because the a11y engine isn't firing a name change event when the tooltiptext attribute on the button changes. This should be a relatively straightforward fix, with the one caveat being that we need to fire either a name change or a description change event depending on how tooltiptext was exposed.