Designer: port away from the deprecated QAction APIs

The deprecation of QAction::associatedWidgets() results in a bit more
code, because the list of associated objects can also contain
QGraphicsWidget instances. So we need to explicitly qobject_cast them
to QWidget* before using.
Apart from that the changes are rather straightforward.

Task-number: QTBUG-104968
Change-Id: I2e7c94de069cd5c9cde5e6d41ac86004a8bae6c9
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
(cherry picked from commit ca8a71e1997650a0ecf497d667cfab5a72858c18)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 7 insertions, 8 deletions

diff --git a/src/designer/src/lib/shared/qdesigner_menu.cpp b/src/designer/src/lib/shared/qdesigner_menu.cpp
index a098c757c..a2c8793c7 100644
--- a/src/designer/src/lib/shared/qdesigner_menu.cpp
+++ b/src/designer/src/lib/shared/qdesigner_menu.cpp
@@ -1035,16 +1035,15 @@ QDesignerMenu *QDesignerMenu::findOrCreateSubMenu(QAction *action)
 
 bool QDesignerMenu::canCreateSubMenu(QAction *action) const // ### improve it's a bit too slow
 {
-    const QWidgetList &associatedWidgets = action->associatedWidgets();
-    for (const QWidget *aw : associatedWidgets) {
-        if (aw != this) {
-            if (const QMenu *m = qobject_cast<const QMenu *>(aw)) {
+    const QObjectList associatedObjects = action->associatedObjects();
+    for (const QObject *ao : associatedObjects) {
+        if (ao != this) {
+            if (const QMenu *m = qobject_cast<const QMenu *>(ao)) {
                 if (m->actions().contains(action))
                     return false; // sorry
-            } else {
-                if (const QToolBar *tb = qobject_cast<const QToolBar *>(aw))
-                    if (tb->actions().contains(action))
-                        return false; // sorry
+            } else if (const QToolBar *tb = qobject_cast<const QToolBar *>(ao)) {
+                if (tb->actions().contains(action))
+                    return false; // sorry
             }
         }
     }