qt a11y: Handle all QAccessible::Relation flags

The bits/flags in `QAccessible::Relation` can be set in
any combination, while the previous code would only properly
handle the case that `QAccessible::AllRelations` is set.

This would e.g. mean that

QtAccessibleWidget::relations(QAccessible::FlowsTo | QAccessible::FlowsFrom)

would not return both relations as it should.

The previous handling of the case that just a single flag is set
also looks odd, since it would use the sal_Int16 value of the
UNO relation as an index into the set of relations...

Fix this by always iterating over all relations and
applying the filter in `lcl_appendRelation` (only
append those that match the filter).

(At least for AT-SPI, the previous handling should not have
caused any issues in practice, since Qt's AT-SPI bridge always
passes `QAccessible::AllRelations` from what I can see.)

Change-Id: Icc21ac252db026f607fe8d6041252916b1d9e3a9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/148352
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions