Bug 578816

Summary:	TreeViewerFocusCellManager with Screenreader: only first column read
Product:	[Eclipse Project] Platform	Reporter:	Julia Reuss <julia.reuss>
Component:	SWT	Assignee:	Platform-SWT-Inbox <platform-swt-inbox>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	P3
Version:	4.24
Target Milestone:	---
Hardware:	PC
OS:	Windows 10
Whiteboard:

Description Julia Reuss

2022-02-18 03:12:09 EST

We use a TreeViewer with many columns (> 5) - therefore the keyboard navigation over its columns is enabled. We utilize the TreeViewerFocusCellManager to navigate through the columns of a single row with arrow keys left/right.

When navigating over a row the corresponding column cells are selected as expected - But when using typical screenreaders (e.g. Jaws/Narrator) only the first column of each row is read.
Symptom: independent of the selected column the screenreader only reads the first column cell (Jaws, Narrator), the selection frame of the screenreader remains on the first column entry of the row when using the arrow keys (Narrator).

Similar behavior also occurs in case of a TreeViewerEditor, but when starting to edit the cell the focus of the screenreaders is updated and the editable cell is read correctly. Key difference here seems to be the updateFocusCell Method.

Is a known issue? 
Is the usage of column navigation for TreeViewer in context of accessibility generally not supported?