- java.lang.Object
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- java.util.EventObject
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- javax.faces.event.FacesEvent
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- javax.faces.event.ValueChangeEvent
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- All Implemented Interfaces:
- Serializable
public class ValueChangeEvent extends FacesEvent
A
ValueChangeEventis a notification that the local value of the source component has been change as a result of user interface activity. It is not fired unless validation of the new value was completed successfully.- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class java.util.EventObject
source
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Constructor Summary
Constructors Constructor and Description ValueChangeEvent(UIComponent component, Object oldValue, Object newValue)Construct a new event object from the specified source component, old value, and new value.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description ObjectgetNewValue()Return the current local value of the sourceUIComponent.ObjectgetOldValue()Return the previous local value of the sourceUIComponent.booleanisAppropriateListener(FacesListener listener)Returntrueif thisFacesListeneris an instance of a listener class that this event supports.voidprocessListener(FacesListener listener)Broadcast thisFacesEventto the specifiedFacesListener, by whatever mechanism is appropriate.-
Methods inherited from class javax.faces.event.FacesEvent
getComponent, getPhaseId, queue, setPhaseId
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Constructor Detail
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ValueChangeEvent
public ValueChangeEvent(UIComponent component, Object oldValue, Object newValue)
Construct a new event object from the specified source component, old value, and new value.
The default
PhaseIdfor this event isPhaseId.ANY_PHASE.- Parameters:
component- SourceUIComponentfor this eventoldValue- The previous local value of thisUIComponentnewValue- The new local value of thieUIComponent- Throws:
IllegalArgumentException- ifcomponentisnull
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Method Detail
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getOldValue
public Object getOldValue()
Return the previous local value of the source
UIComponent.
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getNewValue
public Object getNewValue()
Return the current local value of the source
UIComponent.
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isAppropriateListener
public boolean isAppropriateListener(FacesListener listener)
Description copied from class:FacesEventReturn
trueif thisFacesListeneris an instance of a listener class that this event supports. Typically, this will be accomplished by an "instanceof" check on the listener class.- Specified by:
isAppropriateListenerin classFacesEvent- Parameters:
listener-FacesListenerto evaluate
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processListener
public void processListener(FacesListener listener)
Description copied from class:FacesEventBroadcast this
FacesEventto the specifiedFacesListener, by whatever mechanism is appropriate. Typically, this will be accomplished by calling an event processing method, and passing thisFacesEventas a paramter.- Specified by:
processListenerin classFacesEvent- Parameters:
listener-FacesListenerto send thisFacesEventto- Throws:
AbortProcessingException- Signal the JavaServer Faces implementation that no further processing on the current event should be performed
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Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/faces/event/ValueChangeEvent.html
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