Windows QPA: Fix accessibility focus event for table/tree/list

The focused element within a table, tree or list was not being informed
in the UI Automation focus change events, causing the focused element
to be missed by screen readers.

Fixes: QTBUG-91029
Change-Id: I738502e6871358508b4510763018837c304b618e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
(cherry picked from commit f1eccab04e01b3acc1a4b4c6a5fe7b3af3e2dcba)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
index 18becd4ab0..171a3c268b 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiamainprovider.cpp
@@ -107,6 +107,17 @@ QWindowsUiaMainProvider::~QWindowsUiaMainProvider()
 void QWindowsUiaMainProvider::notifyFocusChange(QAccessibleEvent *event)
 {
     if (QAccessibleInterface *accessible = event->accessibleInterface()) {
+        // If this is a table/tree/list, raise event for the focused cell/item instead.
+        if (accessible->tableInterface()) {
+            int count = accessible->childCount();
+            for (int i = 0; i < count; ++i) {
+                QAccessibleInterface *item = accessible->child(i);
+                if (item && item->isValid() && item->state().focused) {
+                    accessible = item;
+                    break;
+                }
+            }
+        }
         if (QWindowsUiaMainProvider *provider = providerForAccessible(accessible)) {
             QWindowsUiaWrapper::instance()->raiseAutomationEvent(provider, UIA_AutomationFocusChangedEventId);
         }