StateMachine (milky-common 1.0.13 API)

```
public interface StateMachine
```
The StateMachine lets you organize event handling, if the order of the events are important to you.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addStateChangeListener(StateChangeListener listener)`	Add a new state change listener
`boolean`	`handleEvent(StateEvent event)`	Handle an event in the current state.
`void`	`removeStateChangeListener(StateChangeListener listener)`	Remove a state change listener

- Method Detail
  - addStateChangeListener
```
void addStateChangeListener(StateChangeListener listener)
```
    Add a new state change listener
    
    Parameters:
    
    listener - a reference to the listener that will get information about state changes.
  - removeStateChangeListener
```
void removeStateChangeListener(StateChangeListener listener)
```
    Remove a state change listener
    
    Parameters:
    
    listener - a reference to the listener that will get information about state changes.
  - handleEvent
```
boolean handleEvent(StateEvent event)
```
    Handle an event in the current state.
    
    Parameters:
    
    event - processing event
    
    Returns:
    
    true if staterocessed