PartialViewContextFactory.java

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package javax.faces.context;

import javax.faces.FacesWrapper;

/**
 * <p class="changed_modified_2_0"><span class="changed_modified_2_3">PartialViewContextFactory</span> is a
 * factory object that creates (if needed) and returns new {@link
 * PartialViewContext} instances.</p>
 *
 * <div class="changed_added_2_0">
 *
 * <p>There must be one <code>PartialViewContextFactory</code> instance per web
 * application that is utilizing JavaServer Faces.  This instance can be
 * acquired, in a portable manner, by calling:</p>
 * <pre>
 *   PartialViewContextFactory factory = (PartialViewContextFactory)
 *    FactoryFinder.getFactory(FactoryFinder.PARTIAL_VIEW_CONTEXT_FACTORY);
 * </pre>
 *
 * </div>
 *
 * <p class="changed_added_2_3">Usage: extend this class and push the implementation being wrapped to the
 * constructor and use {@link #getWrapped} to access the instance being wrapped.</p>
 *
 * @since 2.0
 */
public abstract class PartialViewContextFactory implements FacesWrapper<PartialViewContextFactory> {

    private PartialViewContextFactory wrapped;

    /**
     * @deprecated Use the other constructor taking the implementation being wrapped.
     */
    @Deprecated
    public PartialViewContextFactory() {

    }

    /**
     * <p class="changed_added_2_3">If this factory has been decorated,
     * the implementation doing the decorating should push the implementation being wrapped to this constructor.
     * The {@link #getWrapped()} will then return the implementation being wrapped.</p>
     *
     * @param wrapped The implementation being wrapped.
     */
    public PartialViewContextFactory(PartialViewContextFactory wrapped) {
        this.wrapped = wrapped;
    }

    /**
     * <p class="changed_modified_2_3">If this factory has been decorated, the
     * implementation doing the decorating may override this method to provide
     * access to the implementation being wrapped.</p>
     */
    @Override
    public PartialViewContextFactory getWrapped() {
        return wrapped;
    }


    // ---------------------------------------------------------- Public Methods


    /**
     * <p><span class="changed_modified_2_0">Create</span> (if needed)
     * and return a {@link PartialViewContext} instance that is initialized
     * using the current {@link FacesContext} instance.</p>
     *
     * @param context the {@link FacesContext} for the current request.
     *
     * @return the {@link PartialViewContext} as specified above
     */
    public abstract PartialViewContext getPartialViewContext(FacesContext context);

}