add timeout transition

libs/main/state_machine/pistatemachine_transition.h

@@ -27,6 +27,7 @@
 #define pistatemachine_transition_H
 
 #include "pistatemachine_base.h"
+#include "pitimer.h"
 
 
 //! \ingroup StateMachine
@@ -39,7 +40,7 @@ class PIP_EXPORT PITransitionBase {
 
 public:
 	PITransitionBase(PIStateBase * source, PIStateBase * target, int event_id);
-	~PITransitionBase();
+	virtual ~PITransitionBase();
 
 	PIStateMachine * machine() const { return root; }
 	PIStateBase * source() const { return source_state; }
@@ -74,6 +75,9 @@ public:
 	void trigger();
 
 protected:
+	virtual void enabled() {}
+	virtual void disabled() {}
+
 	int eventID               = 0;
 	PIStateBase *source_state = nullptr, *target_state = nullptr;
 	PIStateMachine * root                       = nullptr;
@@ -81,4 +85,17 @@ protected:
 	std::function<void()> action;
 };
 
+
+class PIP_EXPORT PITransitionTimeout: public PITransitionBase {
+public:
+	PITransitionTimeout(PIStateBase * source, PIStateBase * target, PISystemTime timeout);
+	~PITransitionTimeout();
+
+private:
+	void enabled() override;
+	void disabled() override;
+
+	PITimer timer;
+};
+
 #endif