The Tree list for the Expert Configuration dialog does not expose for assistive technology columns other than the Preference Name.
Also, and more troublesome, when using the search and results are returned just the top level Preference Name is exposed--but the actual rows holding each property are not accessible.
Preference name, Property, Type and Value foreach stanza are not exposed to assistive technology tools.
While understandably costly to provide for the whole tree, believe we should expose the column names and cell values when a valid search result is returned -- as is there is no accessibile event emitted and the attributes can not be reviewed or edited using AT.
Oepn a screen reader (NVDA on Windows)
Launch LibreOffice -> Tools -> Options -> Advanced: Expert Configuration
enter "org.openoffice.Office.Common/history" and search
cursor movment up and down in the result
only the first row of search results expose a preference name to AT
All other rows of search result render only their row number and an empty value for the preference name field
that each table row, would sound a column name [Preference Name|Property|Type|Value] and the value for each when occupied
Repro with NVDA.
Win 7 Pro 64-bit Version: 18.104.22.168.alpha1+
Build ID: 3d27afd26f7b85c46a7c7d08498000b9dbcea1c8
CPU Threads: 4; OS Version: Windows 6.1; UI Render: default;
TinderBox: Win-x86@42, Branch:master, Time: 2016-05-09_02:42:15
Locale: fi-FI (fi_FI)
Not strictly a fix for having the information automatically read, and this only works for NVDA, but you can read the other columns by using NVDA's "Move to next object" command. Press NVDA+numpad6 in desktop keyboard layout or NVDA+shift+right arrow in laptop layout. See https://www.nvaccess.org/files/nvda/documentation/userGuide.html#toc29 for information on using Object navigation.
As noted that only works with NVDA. I'm not sure if Orca or other screen readers have similar commands.