PreValidateEvent

java.lang.Object
- java.util.EventObject
- - javax.faces.event.SystemEvent
  - - javax.faces.event.ComponentSystemEvent
    - - javax.faces.event.PreValidateEvent

```
public class PreValidateEvent
extends ComponentSystemEvent
```
When an instance of this event is passed to SystemEventListener.processEvent(javax.faces.event.SystemEvent) or ComponentSystemEventListener.processEvent(javax.faces.event.ComponentSystemEvent), the listener implementation may assume that the source of this event instance is the UIComponent instance that is about to be validated.

Components with children must publish this event before processing their child nodes in UIComponent.processValidators(javax.faces.context.FacesContext). This is especially important for iterating components such as UIData, and form components, such as UIForm.

Since:

2.0

See Also:

Serialized Form

- Field Summary
  - Fields inherited from class java.util.EventObject
    source
- Constructor Summary
  
  Constructors
  Constructor Description
  
  PreValidateEvent(UIComponent component)
- Method Summary
  - Methods inherited from class javax.faces.event.ComponentSystemEvent
    getComponent, isAppropriateListener, processListener
  - 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 Detail
  - PreValidateEvent
```
public PreValidateEvent(UIComponent component)
```
    Parameters:
    
    component - the UIComponent that is about to be validated.