make sure signal transition is correctly unregistered/re-registered

When the signal or senderObject is changed while the state is active,
the transition needs to be unregistered _before_ either property is
changed, only _then_ can it be re-registered.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/corelib/statemachine/qsignaltransition_p.h b/src/corelib/statemachine/qsignaltransition_p.h
index a23e58c8c1..339de633d1 100644
--- a/src/corelib/statemachine/qsignaltransition_p.h
+++ b/src/corelib/statemachine/qsignaltransition_p.h
@@ -66,7 +66,8 @@ public:
 
     static QSignalTransitionPrivate *get(QSignalTransition *q);
 
-    void invalidate();
+    void unregister();
+    void maybeRegister();
 
     QObject *sender;
     QByteArray signal;