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.

5 files changed, 11 insertions, 11 deletions

diff --git a/examples/animation/example/mainwindow.cpp b/examples/animation/example/mainwindow.cpp
index 2b0e035..bec755c 100644
--- a/examples/animation/example/mainwindow.cpp
+++ b/examples/animation/example/mainwindow.cpp
@@ -173,9 +173,9 @@ MainWindow::MainWindow() : QMainWindow(0)
 
     setCentralWidget(view);
 
-    state3->invokeMethodOnEntry(this, "onEnterState3");
-    state2->invokeMethodOnEntry(this, "onEnterState2");
-    state1->invokeMethodOnEntry(this, "onEnterState1");
+    QObject::connect(state3, SIGNAL(entered()), this, SLOT(onEnterState3()));
+    QObject::connect(state2, SIGNAL(entered()), this, SLOT(onEnterState2()));
+    QObject::connect(state1, SIGNAL(entered()), this, SLOT(onEnterState1()));
 
     connect(listWidget, SIGNAL(itemClicked(QListWidgetItem*)), this, SLOT(onItemClicked(QListWidgetItem*)));
     connect(button3, SIGNAL(clicked()), this, SLOT(onRemoveClicked()));
diff --git a/examples/animation/moveblocks/main.cpp b/examples/animation/moveblocks/main.cpp
index 1f253f3..639fff3 100644
--- a/examples/animation/moveblocks/main.cpp
+++ b/examples/animation/moveblocks/main.cpp
@@ -172,7 +172,7 @@ int main(int argc, char **argv)
     QTimer timer;
     timer.setInterval(1250);
     timer.setSingleShot(true);
-    group->invokeMethodOnEntry(&timer, "start");
+    QObject::connect(group, SIGNAL(entered()), &timer, SLOT(start()));
 
     QState *state1;
     QState *state2;
diff --git a/examples/animation/stickman/lifecycle.cpp b/examples/animation/stickman/lifecycle.cpp
index 9233760..e67b32d 100644
--- a/examples/animation/stickman/lifecycle.cpp
+++ b/examples/animation/stickman/lifecycle.cpp
@@ -86,8 +86,8 @@ LifeCycle::LifeCycle(StickMan *stickMan, GraphicsView *keyReceiver)
     QTimer *timer = new QTimer(lightningBlink);
     timer->setSingleShot(true);
     timer->setInterval(100);
-    lightningBlink->invokeMethodOnEntry(timer, "start");
-    lightningBlink->invokeMethodOnExit(timer, "stop");
+    QObject::connect(lightningBlink, SIGNAL(entered()), timer, SLOT(start()));
+    QObject::connect(lightningBlink, SIGNAL(exited()), timer, SLOT(stop()));
   
     m_dead = new QState(m_machine->rootState());
     m_dead->setRestorePolicy(QState::DoNotRestoreProperties);
diff --git a/examples/statemachine/composition/main.cpp b/examples/statemachine/composition/main.cpp
index 24b823c..927fc62 100644
--- a/examples/statemachine/composition/main.cpp
+++ b/examples/statemachine/composition/main.cpp
@@ -63,7 +63,7 @@ int main(int argc, char **argv)
       s1_timer->setObjectName("s1_timer");
       QTimer t1;
       t1.setInterval(2000);
-      s1_timer->invokeMethodOnEntry(&t1, "start");
+      QObject::connect(s1_timer, SIGNAL(entered()), &t1, SLOT(start()));
       QFinalState *s1_done = new QFinalState(s1);
       s1_done->setObjectName("s1_done");
       s1_timer->addTransition(&t1, SIGNAL(timeout()), s1_done);
@@ -80,7 +80,7 @@ int main(int argc, char **argv)
       s2_timer->setObjectName("s2_timer");
       QTimer t2;
       t2.setInterval(2000);
-      s2_timer->invokeMethodOnEntry(&t2, "start");
+      QObject::connect(s2_timer, SIGNAL(entered()), &t2, SLOT(start()));
       QFinalState *s2_done = new QFinalState(s2);
       s2_done->setObjectName("s2_done");
       s2_timer->addTransition(&t2, SIGNAL(timeout()), s2_done);
diff --git a/examples/statemachine/trafficlight/main.cpp b/examples/statemachine/trafficlight/main.cpp
index 528ed00..115ecad 100644
--- a/examples/statemachine/trafficlight/main.cpp
+++ b/examples/statemachine/trafficlight/main.cpp
@@ -97,9 +97,9 @@ public:
         timer->setInterval(duration);
         timer->setSingleShot(true);
         QState *timing = new QState(this);
-        timing->invokeMethodOnEntry(light, "turnOn");
-        timing->invokeMethodOnEntry(timer, "start");
-        timing->invokeMethodOnExit(light, "turnOff");
+        QObject::connect(timing, SIGNAL(entered()), light, SLOT(turnOn()));
+        QObject::connect(timing, SIGNAL(entered()), timer, SLOT(start()));
+        QObject::connect(timing, SIGNAL(exited()), light, SLOT(turnOff()));
         QFinalState *done = new QFinalState(this);
         timing->addTransition(timer, SIGNAL(timeout()), done);
         setInitialState(timing);