tdf#136323 qt5: Remember accessible object

'QAccessibleCache::insert' from the Qt library has a
'Q_ASSERT' checking that the corresponding 'QObject' for
which the 'QAccessibleInterface' provides information
is actually the same as the object passed as a parameter:

QAccessible::Id QAccessibleCache::insert(QObject *object, QAccessibleInterface *iface) const
{
// ...
QObject *obj = iface->object();
->      Q_ASSERT(object == obj);

However, 'Qt5AccessibleWidget::object' so far was always returning
'nullptr', triggering this assert when using a Qt version
not built with 'QT_NO_DEBUG'.

To fix this, remember and return the object as needed.

Change-Id: I4015b4c37aa8a073b02465df580a7235884e6cf3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/102196
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

1 files changed, 5 insertions, 4 deletions

diff --git a/vcl/qt5/Qt5AccessibleWidget.cxx b/vcl/qt5/Qt5AccessibleWidget.cxx
index ccca1cd2072f..9933444d9092 100644
--- a/vcl/qt5/Qt5AccessibleWidget.cxx
+++ b/vcl/qt5/Qt5AccessibleWidget.cxx
@@ -59,8 +59,9 @@ using namespace css::accessibility;
 using namespace css::beans;
 using namespace css::uno;
 
-Qt5AccessibleWidget::Qt5AccessibleWidget(const Reference<XAccessible> xAccessible)
+Qt5AccessibleWidget::Qt5AccessibleWidget(const Reference<XAccessible> xAccessible, QObject* pObject)
     : m_xAccessible(xAccessible)
+    , m_pObject(pObject)
 {
     Reference<XAccessibleContext> xContext = xAccessible->getAccessibleContext();
     Reference<XAccessibleEventBroadcaster> xBroadcaster(xContext, UNO_QUERY);
@@ -699,7 +700,7 @@ bool Qt5AccessibleWidget::isValid() const
     return xAc.is();
 }
 
-QObject* Qt5AccessibleWidget::object() const { return nullptr; }
+QObject* Qt5AccessibleWidget::object() const { return m_pObject; }
 
 void Qt5AccessibleWidget::setText(QAccessible::Text /* t */, const QString& /* text */) {}
 
@@ -722,13 +723,13 @@ QAccessibleInterface* Qt5AccessibleWidget::customFactory(const QString& classnam
         vcl::Window* pWindow = pWidget->frame().GetWindow();
 
         if (pWindow)
-            return new Qt5AccessibleWidget(pWindow->GetAccessible());
+            return new Qt5AccessibleWidget(pWindow->GetAccessible(), object);
     }
     if (classname == QLatin1String("Qt5XAccessible") && object)
     {
         Qt5XAccessible* pXAccessible = dynamic_cast<Qt5XAccessible*>(object);
         if (pXAccessible && pXAccessible->m_xAccessible.is())
-            return new Qt5AccessibleWidget(pXAccessible->m_xAccessible);
+            return new Qt5AccessibleWidget(pXAccessible->m_xAccessible, object);
     }
 
     return nullptr;