kill the stateactions api

It just didn't give us that much.
Typically you just reimplement onEntry/onExit/onTransition
when you want to do something.
We go back to the signals-and-slots approach: states have
entered() and exited() signals that you can connect to.
It's still possible to have an action-based API, but then
you build it on top of the core API, which is OK.
Replacing 4 public classes (and one layer in the hierarchy)
with 2 signals feels good.

1 files changed, 11 insertions, 4 deletions

diff --git a/src/corelib/statemachine/qsignaltransition.cpp b/src/corelib/statemachine/qsignaltransition.cpp
index 32f2d02acb..064ac6ec04 100644
--- a/src/corelib/statemachine/qsignaltransition.cpp
+++ b/src/corelib/statemachine/qsignaltransition.cpp
@@ -137,7 +137,7 @@ void QSignalTransitionPrivate::invalidate()
   Constructs a new signal transition with the given \a sourceState.
 */
 QSignalTransition::QSignalTransition(QState *sourceState)
-    : QActionTransition(*new QSignalTransitionPrivate, sourceState)
+    : QAbstractTransition(*new QSignalTransitionPrivate, sourceState)
 {
 }
 
@@ -147,7 +147,7 @@ QSignalTransition::QSignalTransition(QState *sourceState)
 */
 QSignalTransition::QSignalTransition(QObject *sender, const char *signal,
                                      QState *sourceState)
-    : QActionTransition(*new QSignalTransitionPrivate, sourceState)
+    : QAbstractTransition(*new QSignalTransitionPrivate, sourceState)
 {
     Q_D(QSignalTransition);
     d->sender = sender;
@@ -162,7 +162,7 @@ QSignalTransition::QSignalTransition(QObject *sender, const char *signal,
 QSignalTransition::QSignalTransition(QObject *sender, const char *signal,
                                      const QList<QAbstractState*> &targets,
                                      QState *sourceState)
-    : QActionTransition(*new QSignalTransitionPrivate, targets, sourceState)
+    : QAbstractTransition(*new QSignalTransitionPrivate, targets, sourceState)
 {
     Q_D(QSignalTransition);
     d->sender = sender;
@@ -245,9 +245,16 @@ bool QSignalTransition::eventTest(QEvent *event) const
 /*!
   \reimp
 */
+void QSignalTransition::onTransition()
+{
+}
+
+/*!
+  \reimp
+*/
 bool QSignalTransition::event(QEvent *e)
 {
-    return QActionTransition::event(e);
+    return QAbstractTransition::event(e);
 }
 
 QT_END_NAMESPACE