state-handler: #6 add state controller functions

- HandleState to set an event of the state
- SetState to update current state to new

StateHandler/inc/StateHandler.h

@@ -41,13 +41,27 @@ enum _buttons {
 	BUTTON_CONTROL_TOG_ACTIVE
 };
 
+class StateHandler;
+typedef void (StateHandler::*state_pointer)(const Event &);
+
+
 class StateHandler {
 public:
 	StateHandler();
 	virtual ~StateHandler();
 	int getSetPresuure(); // Get currently set pressure 0-100%
 	int getSetSpeed(); //Get currently set FanSpeed 0-100%
+
+	/** Handle the given event of the current state
+	* @param event event to be handled in the current state 
+	*/
+	void HandleState(const Event &event);
 private:
+	state_pointer current;
+	/** Set a new curremt state
+	* @param newstate new state to be set to current 
+	*/
+	void SetState(state_pointer newstate);
 	bool mode;
 	Counter * bar_pressure;
 	Counter * bar_speed;

StateHandler/src/StateHandler.cpp

@@ -25,3 +25,14 @@ int StateHandler::getSetSpeed(){
 	// TODO
 	return 0;
 }
+
+void StateHandler::HandleState(const Event &event){
+	(this->*current)(event);
+}
+
+void StateHandler::SetState(state_pointer newstate){
+	(this->*current)(Event(Event::eExit));
+	current = newstate;
+	(this->*current)(Event(Event::eEnter));
+
+}