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.

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `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`.

- - ### Method Detail

    - #### 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.

      Parameters:
        `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)`.

Copyright © 1996-2013, Oracle and/or its affiliates. All Rights Reserved. Use is subject to license terms.