jakarta.faces.application

Class NavigationHandlerWrapper

java.lang.Object

jakarta.faces.application.NavigationHandler

jakarta.faces.application.NavigationHandlerWrapper

All Implemented Interfaces:

FacesWrapper<NavigationHandler>

public abstract class NavigationHandlerWrapper
extends NavigationHandler
implements FacesWrapper<NavigationHandler>

NavigationHandlerWrapper provides a simple implementation of NavigationHandler that can be subclassed by developers wishing to provide specialized behavior to an existing NavigationHandler instance. The default implementation of all methods is to call through to the wrapped NavigationHandler instance.

Usage: extend this class and push the implementation being wrapped to the constructor and use getWrapped() to access the instance being wrapped.

Since:

2.2

Constructor Summary

Constructors

Constructor and Description
NavigationHandlerWrapper() Deprecated. Use the other constructor taking the implementation being wrapped.
NavigationHandlerWrapper(NavigationHandler wrapped) If this navigation handler has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor.

Method Summary

Modifier and Type	Method and Description
NavigationHandler	getWrapped() A class that implements this interface uses this method to return an instance of the class being wrapped.
void	handleNavigation(FacesContext context, String fromAction, String outcome) Perform navigation processing based on the state information in the specified FacesContext, plus the outcome string returned by an executed application action.
void	handleNavigation(FacesContext context, String fromAction, String outcome, String toFlowDocumentId) Overloaded variant of NavigationHandler.handleNavigation(jakarta.faces.context.FacesContext, java.lang.String, java.lang.String) that allows the caller to provide the defining document id for a flow to be entered by this navigation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NavigationHandlerWrapper

@Deprecated
public NavigationHandlerWrapper()

Deprecated. Use the other constructor taking the implementation being wrapped.

NavigationHandlerWrapper

public NavigationHandlerWrapper(NavigationHandler wrapped)

If this navigation handler has been decorated, the implementation doing the decorating should push the implementation being wrapped to this constructor. The getWrapped() will then return the implementation being wrapped.

Parameters:

wrapped - The implementation being wrapped.

Since:

2.3

Method Detail

getWrapped

public NavigationHandler getWrapped()

Description copied from interface: FacesWrapper

A class that implements this interface uses this method to return an instance of the class being wrapped.

Specified by:

getWrapped in interface FacesWrapper<NavigationHandler>

Returns:

the wrapped instance.

handleNavigation

public void handleNavigation(FacesContext context,
                             String fromAction,
                             String outcome)

Description copied from class: NavigationHandler

Perform navigation processing based on the state information in the specified FacesContext, plus the outcome string returned by an executed application action.

If the implementation class also extends ConfigurableNavigationHandler, the implementation must guarantee that the logic used in a call to ConfigurableNavigationHandler.getNavigationCase(jakarta.faces.context.FacesContext, java.lang.String, java.lang.String) is used in this method to determine the correct navigation.

This method must set the render targets (used in partial rendering) to render all invoking PartialViewContext.setRenderAll(boolean)) if the view identifier has changed as the result of an application action (to take into account Ajax requests).

Specified by:

handleNavigation in class NavigationHandler

Parameters:

context - The FacesContext for the current request

fromAction - The action binding expression that was evaluated to retrieve the specified outcome, or null if the outcome was acquired by some other means

outcome - The logical outcome returned by a previous invoked application action (which may be null)

handleNavigation

public void handleNavigation(FacesContext context,
                             String fromAction,
                             String outcome,
                             String toFlowDocumentId)

Description copied from class: NavigationHandler

Overloaded variant of NavigationHandler.handleNavigation(jakarta.faces.context.FacesContext, java.lang.String, java.lang.String) that allows the caller to provide the defining document id for a flow to be entered by this navigation. For backward compatibility with decorated NavigationHandler implementations that conform to an earlier version of the specification, an implementation is provided that calls through to NavigationHandler.handleNavigation(jakarta.faces.context.FacesContext, java.lang.String, java.lang.String), ignoring the toFlowDocumentId parameter.

Overrides:

handleNavigation in class NavigationHandler

Parameters:

context - The FacesContext for the current request

fromAction - The action binding expression that was evaluated to retrieve the specified outcome, or null if the outcome was acquired by some other means

outcome - The logical outcome returned by a previous invoked application action (which may be null)

toFlowDocumentId - The defining document id of the flow into which this navigation will cause entry.