1858822 - Provide cell content information to screen readers for non-text-based cells in Table View

Status: ASSIGNED

(Thunderbird :: Disability Access, defect, P1)

Description

[Elizabeth Mitchell]

The information about each cell is not yet available to screen readers.

In bug 1856396, we added aria-labels for each column so there is information available about which column a user is navigating to.

In bug 1843486, we added the ability to navigate the Table View of messages by keyboard in Windows and Linux.

However, users can't hear the actual information for each message if the message is not text-based.

Currently in daily, the screen reader will read column information (which column and which column number) and whether or not the message is selected. For text-based columns, the user also hears information about the cell, like the subject name. But for non-text based columns, users should have access to the content information in those cells.