edu.nrao.sss.webapp.faces
Class FacesMessagePhaseListener

java.lang.Object
  edu.nrao.sss.webapp.faces.FacesMessagePhaseListener

All Implemented Interfaces:

Serializable, EventListener, PhaseListener

public class FacesMessagePhaseListener
extends Object
implements PhaseListener

This class attempts to retain FacesMessages that would other wise be lost due to a panelDivider being resized. This class only listens to events for the RENDER_RESPONSE phase. During the afterPhase() method, we cache all existing FacesMessages in a Map keyed by the associated HttpSession's Id. During the beforePhase() method, the request parameters are searched for a parameter name ending in InPercent. If such a parameter exists and its value is an integer, then the messages found in the cache are added to the FacesContext. Either way, the cache is cleared at the end of the beforePhase() method to make sure we're not holding onto stale FacesMessages.

See Also:

Serialized Form

Constructor Summary

FacesMessagePhaseListener()

Method Summary

void	afterPhase(PhaseEvent event) Always caches all FacesMessages for possible later use in the beforePhase method.
void	beforePhase(PhaseEvent event) If the request has a parameter ending in "InPercent" defined to a non-empty string (an integer to be exact), then add the cached FacesMessages back to the FacesContext.
PhaseId	getPhaseId()

Methods inherited from class java.lang.Object

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

Constructor Detail

FacesMessagePhaseListener

public FacesMessagePhaseListener()

Method Detail

getPhaseId

public PhaseId getPhaseId()

Specified by:

getPhaseId in interface PhaseListener

beforePhase

public void beforePhase(PhaseEvent event)

If the request has a parameter ending in "InPercent" defined to a non-empty string (an integer to be exact), then add the cached FacesMessages back to the FacesContext. Either way, empty the cache.

Specified by:

beforePhase in interface PhaseListener

afterPhase

public void afterPhase(PhaseEvent event)

Always caches all FacesMessages for possible later use in the beforePhase method.

Specified by:

afterPhase in interface PhaseListener