Package jakarta.faces.event

Class SystemEvent

java.lang.Object

java.util.EventObject

jakarta.faces.event.SystemEvent

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ComponentSystemEvent, ExceptionQueuedEvent, PostConstructApplicationEvent, PostConstructCustomScopeEvent, PostKeepFlashValueEvent, PostPutFlashValueEvent, PreClearFlashEvent, PreDestroyApplicationEvent, PreDestroyCustomScopeEvent, PreRemoveFlashValueEvent

public abstract class SystemEvent
extends EventObject

SystemEvent is the base class for non-application specific events that can be fired by arbitrary objects.

Since:

2.0

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor	Description
SystemEvent(FacesContext facesContext, Object source)	Pass the argument source to the superclass constructor.
SystemEvent(Object source)	Pass the argument source to the superclass constructor.

Method Summary

Modifier and Type	Method	Description
FacesContext	getFacesContext()	Get the Faces context.
boolean	isAppropriateListener(FacesListener listener)	Return true if this FacesListener is an instance of a the appropriate listener class that this event supports.
void	processListener(FacesListener listener)	Broadcast this event instance to the specified FacesListener, by whatever mechanism is appropriate.

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Constructor Details

SystemEvent

public SystemEvent(Object source)

Pass the argument source to the superclass constructor.

Parameters:

source - the source reference to be passed to the superclass constructor.

Throws:

IllegalArgumentException - if the argument is null.

SystemEvent

public SystemEvent(FacesContext facesContext,
 Object source)

Pass the argument source to the superclass constructor.

Parameters:

facesContext - the Faces context.

source - the source reference to be passed to the superclass constructor.

Throws:

IllegalArgumentException - if the argument is null.

Method Details

getFacesContext

public FacesContext getFacesContext()

Get the Faces context.

If the constructor was passed a FacesContext we return it, otherwise we call FacesContext.getCurrentInstance() and return it.

Returns:

the Faces context.

Since:

2.3

isAppropriateListener

public boolean isAppropriateListener(FacesListener listener)

Return true if this FacesListener is an instance of a the appropriate listener class that this event supports. The default implementation returns true if the listener is a ComponentSystemEventListener.

Parameters:

listener - FacesListener to evaluate

Returns:

the result as specified above

processListener

public void processListener(FacesListener listener)

Broadcast this event instance to the specified FacesListener, by whatever mechanism is appropriate. Typically, this will be accomplished by calling an event processing method, and passing this instance as a parameter.

Parameters:

listener - FacesListener to send this FacesEvent to

Throws:

AbortProcessingException - Signal the Jakarta Faces implementation that no further processing on the current event should be performed