QStateMachine: add internal transitions.

The behavior of "external" and "internal" transitions is identical,
except in the case of a transition whose source state is a compound
state and whose target(s) is a descendant of the source. In such a case,
an internal transition will not exit and re-enter its source state,
while an external one will.

[ChangeLog][State machine] Added support for internal transitions.

Change-Id: I9efb1e7368ee52aa2544eb84709a00ae3d5350d3
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/corelib/statemachine/qabstracttransition.h b/src/corelib/statemachine/qabstracttransition.h
index 768a364a4b..bf32b3e825 100644
--- a/src/corelib/statemachine/qabstracttransition.h
+++ b/src/corelib/statemachine/qabstracttransition.h
@@ -59,7 +59,14 @@ class Q_CORE_EXPORT QAbstractTransition : public QObject
     Q_PROPERTY(QState* sourceState READ sourceState)
     Q_PROPERTY(QAbstractState* targetState READ targetState WRITE setTargetState NOTIFY targetStateChanged)
     Q_PROPERTY(QList<QAbstractState*> targetStates READ targetStates WRITE setTargetStates NOTIFY targetStatesChanged)
+    Q_PROPERTY(TransitionType transitionType READ transitionType WRITE setTransitionType)
 public:
+    enum TransitionType {
+        ExternalTransition,
+        InternalTransition
+    };
+    Q_ENUM(TransitionType)
+
     QAbstractTransition(QState *sourceState = 0);
     virtual ~QAbstractTransition();
 
@@ -69,6 +76,9 @@ public:
     QList<QAbstractState*> targetStates() const;
     void setTargetStates(const QList<QAbstractState*> &targets);
 
+    TransitionType transitionType() const;
+    void setTransitionType(TransitionType type);
+
     QStateMachine *machine() const;
 
 #ifndef QT_NO_ANIMATION