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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">Provides 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>
 *
 * <div class="changed_added_2_2">
 *
 * <p>Usage: extend this class and override {@link #getWrapped} to
 * return the instance we are wrapping.</p>
 *
 * </div>
 *
 * @since 2.2
 */
public abstract class ConfigurableNavigationHandlerWrapper extends ConfigurableNavigationHandler implements FacesWrapper<ConfigurableNavigationHandler>{

    /**
     * @return the instance that we are wrapping.
     */ 
    @Override
    public abstract ConfigurableNavigationHandler getWrapped();
    
    
    @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);
    }

    
}
