ActionEvent (Java EE 5)

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javax.faces.event Class ActionEvent

java.lang.Object
  java.util.EventObject
      javax.faces.event.FacesEvent
          javax.faces.event.ActionEvent

All Implemented Interfaces:: Serializable

public class ActionEvent
extends FacesEvent

Extends: java.util.EventObject > FacesEvent

表示激活用户界面组件（如 UICommand）的 ActionEvent。

英文文档：

An ActionEvent represents the activation of a user interface component (such as a UICommand).

See Also:: Serialized Form

Field Summary

Fields inherited from class java.util.EventObject
`source`

Constructor Summary
`ActionEvent(UIComponent component)` Construct a new event object from the specified source component and action command.

Method Summary
`boolean`	`isAppropriateListener(FacesListener listener)` Return `true` if this `FacesListener` is an instance of a listener class that this event supports.
`void`	`processListener(FacesListener listener)` Broadcast this `FacesEvent` to the specified `FacesListener`, by whatever mechanism is appropriate.

Methods inherited from class javax.faces.event.FacesEvent
`getComponent, getPhaseId, queue, setPhaseId`

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

public ActionEvent(UIComponent component)

根据指定的源组件和操作命令构造一个新的事件对象。

component 此事件的源 `UIComponent`

Throws IllegalArgumentException: 如果 `component` 为 `null`

英文文档：
ActionEvent

public ActionEvent(UIComponent component)

Construct a new event object from the specified source component and action command.

Parameters:: component - Source UIComponent for this event
Throws:: IllegalArgumentException - if component is null

Method Detail

public boolean isAppropriateListener(FacesListener listener)

英文文档：
isAppropriateListener

public boolean isAppropriateListener(FacesListener listener)

Description copied from class: FacesEvent

Return true if this FacesListener is 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:: isAppropriateListener in class FacesEvent

Parameters:: listener - FacesListener to evaluate

public void processListener(FacesListener listener)

Throws AbortProcessingException: NullPointerException 通知 JavaServer Face 实现不应该继续处理当前事件

英文文档：
processListener

public void processListener(FacesListener listener)

Description copied from class: FacesEvent

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

Specified by:: processListener in class FacesEvent

Parameters:: listener - FacesListener to send this FacesEvent to
Throws:: AbortProcessingException - Signal the JavaServer Faces implementation that no further processing on the current event should be performed