/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.application;
import javax.el.MethodExpression;
import javax.faces.application.Application;
import javax.faces.application.ConfigurableNavigationHandler;
import javax.faces.application.NavigationCase;
import javax.faces.application.NavigationHandler;
import javax.faces.component.ActionSource;
import javax.faces.component.ActionSource2;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.el.MethodBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;
import javax.faces.event.PhaseId;
import org.apache.myfaces.view.facelets.ViewPoolProcessor;
import org.apache.myfaces.view.facelets.pool.ViewPool;
/**
* @author Manfred Geiler (latest modification by $Author: lu4242 $)
* @author Anton Koinov
* @version $Revision: 1550609 $ $Date: 2013-12-13 02:18:08 +0100 (Fri, 13 Dec 2013) $
*/
public class ActionListenerImpl implements ActionListener
{
public void processAction(ActionEvent actionEvent) throws AbortProcessingException
{
FacesContext facesContext = FacesContext.getCurrentInstance();
Application application = facesContext.getApplication();
UIComponent component = actionEvent.getComponent();
MethodExpression methodExpression = null;
MethodBinding methodBinding = null;
String fromAction = null;
String outcome = null;
if (component instanceof ActionSource2)
{
// Must be an instance of ActionSource2, so don't look on action if the actionExpression is set
methodExpression = ((ActionSource2) component).getActionExpression();
}
if (methodExpression == null && component instanceof ActionSource)
{
// Backwards compatibility for pre-1.2.
methodBinding = ((ActionSource) component).getAction();
}
if (methodExpression != null)
{
fromAction = methodExpression.getExpressionString();
Object objOutcome = methodExpression.invoke(facesContext.getELContext(), null);
if (objOutcome != null)
{
outcome = objOutcome.toString();
}
}
else if (methodBinding != null)
{
fromAction = methodBinding.getExpressionString();
Object objOutcome = methodBinding.invoke(facesContext, null);
if (objOutcome != null)
{
outcome = objOutcome.toString();
}
}
UIViewRoot root = facesContext.getViewRoot();
ViewPoolProcessor processor = ViewPoolProcessor.getInstance(facesContext);
ViewPool pool = (processor != null) ? processor.getViewPool(facesContext, root) : null;
if (pool != null && pool.isDeferredNavigationEnabled() &&
processor.isViewPoolStrategyAllowedForThisView(facesContext, root) &&
(PhaseId.INVOKE_APPLICATION.equals(facesContext.getCurrentPhaseId()) ||
PhaseId.APPLY_REQUEST_VALUES.equals(facesContext.getCurrentPhaseId())) )
{
NavigationHandler navigationHandler = application.getNavigationHandler();
if (navigationHandler instanceof ConfigurableNavigationHandler)
{
NavigationCase navigationCase = ((ConfigurableNavigationHandler) navigationHandler).
getNavigationCase(facesContext, fromAction, outcome);
if (navigationCase != null)
{
// Deferred invoke navigation. The first one wins
if (!facesContext.getAttributes().containsKey(ViewPoolProcessor.INVOKE_DEFERRED_NAVIGATION))
{
String toFlowDocumentId = (component != null) ?
(String) component.getAttributes().get(ActionListener.TO_FLOW_DOCUMENT_ID_ATTR_NAME) : null;
if (toFlowDocumentId != null)
{
facesContext.getAttributes().put(ViewPoolProcessor.INVOKE_DEFERRED_NAVIGATION,
new Object[]{fromAction, outcome, toFlowDocumentId});
}
else
{
facesContext.getAttributes().put(ViewPoolProcessor.INVOKE_DEFERRED_NAVIGATION,
new Object[]{fromAction, outcome});
}
}
}
}
}
else
{
NavigationHandler navigationHandler = application.getNavigationHandler();
String toFlowDocumentId = (component != null) ?
(String) component.getAttributes().get(ActionListener.TO_FLOW_DOCUMENT_ID_ATTR_NAME) : null;
if (toFlowDocumentId != null)
{
navigationHandler.handleNavigation(facesContext, fromAction, outcome, toFlowDocumentId);
}
else
{
navigationHandler.handleNavigation(facesContext, fromAction, outcome);
}
//Render Response if needed
facesContext.renderResponse();
}
}
}