org.jcr_blog.commons.jsf2cdi.scope

Class ViewContext

java.lang.Object

org.jcr_blog.commons.jsf2cdi.scope.ViewContext

All Implemented Interfaces:

EventListener, javax.enterprise.context.spi.Context, javax.faces.event.FacesListener, javax.faces.event.SystemEventListener

public class ViewContext
extends Object
implements javax.enterprise.context.spi.Context, javax.faces.event.SystemEventListener

This class provides the contexts lifecycle for the new JSF-2 @ViewScoped Context. Taken from Seam 3 faces project, for dependency declaration does only works for maven 3 currently. :-( TODO: include dependency when moving to maven 3.

Author:

Mark Struberg, Lincoln Baxter, III, Sebastian Prehn

Constructor Summary

Constructors

Constructor and Description
ViewContext()

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	get(javax.enterprise.context.spi.Contextual<T> component)
<T> T	get(javax.enterprise.context.spi.Contextual<T> component, javax.enterprise.context.spi.CreationalContext<T> creationalContext)
Class<? extends Annotation>	getScope()
boolean	isActive() View scope is active whenever we have a view root.
boolean	isListenerForSource(Object source)
void	processEvent(javax.faces.event.SystemEvent event) We get PreDestroyViewMapEvent events from the JSF servlet and destroy our contextual instances.

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewContext

public ViewContext()

Method Detail

get

public <T> T get(javax.enterprise.context.spi.Contextual<T> component)

Specified by:

get in interface javax.enterprise.context.spi.Context

get

public <T> T get(javax.enterprise.context.spi.Contextual<T> component,
        javax.enterprise.context.spi.CreationalContext<T> creationalContext)

Specified by:

get in interface javax.enterprise.context.spi.Context

isActive

public boolean isActive()

View scope is active whenever we have a view root.

Specified by:

isActive in interface javax.enterprise.context.spi.Context

getScope

public Class<? extends Annotation> getScope()

Specified by:

getScope in interface javax.enterprise.context.spi.Context

isListenerForSource

public boolean isListenerForSource(Object source)

Specified by:

isListenerForSource in interface javax.faces.event.SystemEventListener

processEvent

public void processEvent(javax.faces.event.SystemEvent event)

We get PreDestroyViewMapEvent events from the JSF servlet and destroy our contextual instances. This should (theoretically!) also get fired if the webapp closes, so there should be no need to manually track all view scopes and destroy them at a shutdown.

Specified by:

processEvent in interface javax.faces.event.SystemEventListener

See Also:

SystemEventListener.processEvent(javax.faces.event.SystemEvent)