ConfigurableNavigationHandlerWrapper.java

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package javax.faces.application;

import java.util.Map;
import java.util.Set;

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

/**
 * <p class="changed_added_2_2"><span class="changed_modified_2_3">Provides</span> a simple implementation of
 * {@link ConfigurableNavigationHandler} that can be subclassed by developers wishing
 * to provide specialized behavior to an existing {@link
 * ConfigurableNavigationHandler} instance.  The default implementation of all methods
 * is to call through to the wrapped {@link ConfigurableNavigationHandler}.</p>
 *
 * <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 2.2
 */
public abstract class ConfigurableNavigationHandlerWrapper extends ConfigurableNavigationHandler implements FacesWrapper<ConfigurableNavigationHandler>{

    private ConfigurableNavigationHandler wrapped;

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

    }

    /**
     * <p class="changed_added_2_3">If this configurable navigation handler 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.
     * @since 2.3
     */
    public ConfigurableNavigationHandlerWrapper(ConfigurableNavigationHandler wrapped) {
        this.wrapped = wrapped;
    }

    @Override
    public ConfigurableNavigationHandler getWrapped() {
        return wrapped;
    }

    @Override
    public NavigationCase getNavigationCase(FacesContext context, String fromAction, String outcome) {
        return getWrapped().getNavigationCase(context, fromAction, outcome);
    }

    @Override
    public Map<String, Set<NavigationCase>> getNavigationCases() {
        return getWrapped().getNavigationCases();
    }

    @Override
    public NavigationCase getNavigationCase(FacesContext context, String fromAction, String outcome, String toFlowDocumentId) {
        return getWrapped().getNavigationCase(context, fromAction, outcome, toFlowDocumentId);
    }

    @Override
    public void handleNavigation(FacesContext context, String fromAction, String outcome) {
        getWrapped().handleNavigation(context, fromAction, outcome);
    }

    @Override
    public void performNavigation(String outcome) {
        getWrapped().performNavigation(outcome);
    }

    @Override
    public void inspectFlow(FacesContext context, Flow flow) {
        getWrapped().inspectFlow(context, flow);
    }

}