ContextCallback.java

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package javax.faces.component;

import javax.faces.context.FacesContext;

/**
 *
 * <p>
 * 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.
 * </p>
 *
 */
public interface ContextCallback {

    /**
     * <p>
     * This method will be called by an implementation of {@link UIComponent#invokeOnComponent} and
     * must be passed the component with the <code>clientId</code> given as an argument to
     * <code>invokeOnComponent</code>. At the point in time when this method is called, the argument
     * <code>target</code> is guaranteed to be in the proper state with respect to its ancestors in
     * the View.
     * </p>
     *
     * @param context the <code>FacesContext</code> for this request.
     *
     * @param target the {@link UIComponent} that was located by <code>clientId</code> by a call to
     *            {@link UIComponent#invokeOnComponent}.
     */
    public void invokeContextCallback(FacesContext context, UIComponent target);

}