com.cookingfox.lapasse.impl.state.manager

Class DefaultStateManager<S extends State>

java.lang.Object

com.cookingfox.lapasse.impl.state.manager.DefaultStateManager<S>

Type Parameters:

S - The concrete type of the state object.

All Implemented Interfaces:

StateManager<S>, StateObserver<S>

public class DefaultStateManager<S extends State>
extends Object
implements StateManager<S>

Default implementation of StateManager.

Field Summary

Fields

Modifier and Type	Field and Description
protected S	currentState The current state object.
protected Set<OnStateChanged<S>>	subscribers List of subscribers of when the state changes.

Constructor Summary

Constructors

Constructor and Description
DefaultStateManager(S initialState)

Method Summary

Modifier and Type	Method and Description
S	getCurrentState() Returns the current state.
void	handleNewState(S newState, Event event) Validate and set a new state object.
void	subscribe(OnStateChanged<S> subscriber) Subscribe to when the state changes.
void	unsubscribe(OnStateChanged<S> subscriber) Remove previously added subscriber.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

currentState

protected S extends State currentState

The current state object.

subscribers

protected final Set<OnStateChanged<S extends State>> subscribers

List of subscribers of when the state changes.

Constructor Detail

DefaultStateManager

public DefaultStateManager(S initialState)

Method Detail

getCurrentState

public S getCurrentState()

Description copied from interface: StateObserver

Returns the current state.

Specified by:

getCurrentState in interface StateObserver<S extends State>

Returns:

The current state.

handleNewState

public void handleNewState(S newState,
                           Event event)

Description copied from interface: StateManager

Validate and set a new state object. Calls subscribers if the new state is different from the previous state.

Specified by:

handleNewState in interface StateManager<S extends State>

Parameters:

newState - The new state object to set.

event - The event that triggered the state change.

subscribe

public void subscribe(OnStateChanged<S> subscriber)

Description copied from interface: StateObserver

Subscribe to when the state changes.

Specified by:

subscribe in interface StateObserver<S extends State>

Parameters:

subscriber - The subscriber to notify when the state changes.

unsubscribe

public void unsubscribe(OnStateChanged<S> subscriber)

Description copied from interface: StateObserver

Remove previously added subscriber.

Specified by:

unsubscribe in interface StateObserver<S extends State>

Parameters:

subscriber - The subscriber to remove.