All Downloads are FREE. Search and download functionalities are using the official Maven repository.

javax.faces.application.NavigationHandler Maven / Gradle / Ivy

Go to download

This is the master POM file for Oracle's Implementation of the JSF 2.3 Specification.

There is a newer version: 2.3-pfd
Show newest version
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 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.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package javax.faces.application;


import javax.faces.context.FacesContext;


/**
 * 

A * NavigationHandler is passed the outcome string * returned by an application action invoked for this application, and will * use this (along with related state information) to choose the view to * be displayed next.

* *

A default implementation of NavigationHandler must be * provided by the JSF implementation, which will be utilized unless * setNavigationHandler() is called to establish a different one. * An implementation * of this class must be thread-safe. * This default instance will compare the view identifier of the current * view, the specified action binding, and the specified outcome against * any navigation rules provided in faces-config.xml file(s). * If a navigation case matches, the current view will be changed by a call * to FacesContext.setViewRoot(). Note that a null * outcome value will never match any navigation rule, so it can be used as an * indicator that the current view should be redisplayed.

*/ public abstract class NavigationHandler { /** *

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

* *

If the implementation class also * extends {@link ConfigurableNavigationHandler}, the implementation * must guarantee that the logic used in a call to {@link * ConfigurableNavigationHandler#getNavigationCase} 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 {@link javax.faces.context.PartialViewContext#setRenderAll}) * if the view identifier has changed as the result of an application * action (to take into account Ajax requests).

* * @param context The {@link FacesContext} for the current request * @param fromAction The action binding expression that was evaluated * to retrieve the specified outcome, or null if the * outcome was acquired by some other means * @param outcome The logical outcome returned by a previous invoked * application action (which may be null) * * @throws NullPointerException if context * is null */ public abstract void handleNavigation(FacesContext context, String fromAction, String outcome); /** *

Overloaded variant of {@link #handleNavigation(javax.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 {@code NavigationHandler} implementations that conform to an * earlier version of the specification, an implementation is provided that * calls through to {@link #handleNavigation(javax.faces.context.FacesContext, java.lang.String, java.lang.String)}, * ignoring the {@code toFlowDocumentId} parameter.

* * @param context The {@link FacesContext} for the current request * @param fromAction The action binding expression that was evaluated * to retrieve the specified outcome, or null if the * outcome was acquired by some other means * @param outcome The logical outcome returned by a previous invoked * application action (which may be null) * @param toFlowDocumentId The defining document id of the flow into which * this navigation will cause entry. * * @throws NullPointerException if context * is null */ public void handleNavigation(FacesContext context, String fromAction, String outcome, String toFlowDocumentId) { this.handleNavigation(context, fromAction, outcome); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy