ContextCallback (Java EE 5 SDK)

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Java EE 5 SDK

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javax.faces.component Interface ContextCallback

public interface ContextCallback

A simple callback interace that enables taking action on a specific UIComponent (either facet or child) in the view while preserving any contextual state for that component instance in the view.

方法摘要
`void`	`invokeContextCallback(FacesContext context, UIComponent target)` This method will be called by an implementation of `UIComponent.invokeOnComponent(javax.faces.context.FacesContext, java.lang.String, javax.faces.component.ContextCallback)` and must be passed the component with the `clientId` given as an argument to `invokeOnComponent`.

方法详细信息

invokeContextCallback

void invokeContextCallback(FacesContext context,
                           UIComponent target)

This method will be called by an implementation of UIComponent.invokeOnComponent(javax.faces.context.FacesContext, java.lang.String, javax.faces.component.ContextCallback) and must be passed the component with the clientId given as an argument to invokeOnComponent. At the point in time when this method is called, the argument target is guaranteed to be in the proper state with respect to its ancestors in the View.

参数:: context - the FacesContext for this request.; target - the UIComponent that was located by clientId by a call to UIComponent.invokeOnComponent(javax.faces.context.FacesContext, java.lang.String, javax.faces.component.ContextCallback).

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