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This is the master POM file for Sun's Implementation of the JSF 2.1 Specification.
There is a newer version: 2.2.20
/*
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 * 
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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 * exception as provided by Oracle in the GPL Version 2 section of the License
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package javax.faces.lifecycle;

import javax.faces.FacesWrapper;
import javax.faces.context.FacesContext;

/**
 * Create {@link ClientWindow} instances based on 
 * the incoming request.
 * 
 * 
 * @since 2.2
 */
public abstract class ClientWindowFactory implements FacesWrapper {

    
    /**
     * If this factory has been decorated, the 
     * implementation doing the decorating may override this method to provide
     * access to the implementation being wrapped.  A default implementation
     * is provided that returns null.
     * 
     * @since 2.2
     */
    
    @Override
    public ClientWindowFactory getWrapped() {
        return null;
    }
    
    /**
     * The implementation is responsible
     * for creating the {@link ClientWindow} instance for this request.
     * If {@link ClientWindow#CLIENT_WINDOW_MODE_PARAM_NAME}
     * is "none" or unspecified, this method must return {@code null}.  
     * If {@link ClientWindow#CLIENT_WINDOW_MODE_PARAM_NAME}
     * is "url" the implementation must return a ClientWindow
     * instance that implements the url-mode semantics described in
     * {@link ClientWindow}.
     * 
     * @param context the {@link FacesContext} for this request.
     * @return the {@link ClientWindow} for this request, or {@code null} 
     * 
     * @since 2.2
     */
    
    public abstract ClientWindow getClientWindow(FacesContext context);
    
}