/*
* Copyright 2004 The Apache Software Foundation.
*
* Licensed 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.
*
* $Header:$
*/
package org.apache.beehive.netui.pageflow.faces.internal;
import org.apache.beehive.netui.pageflow.internal.InternalUtils;
import org.apache.struts.action.ActionForm;
import javax.faces.event.ActionListener;
import javax.faces.event.ActionEvent;
import javax.faces.event.AbortProcessingException;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.servlet.ServletRequest;
/**
* Internal class used in JSF/Page Flow integration. This exists to pass form beans from JSF pages to Page Flow
* actions, and to abort event processing if {@link PageFlowNavigationHandler} forwarded to an action.
*
* @see org.apache.beehive.netui.pageflow.faces.PageFlowApplicationFactory
*/
public class PageFlowActionListener
implements ActionListener
{
private ActionListener _delegate;
public PageFlowActionListener( ActionListener delegate )
{
_delegate = delegate;
}
public void processAction( ActionEvent event ) throws AbortProcessingException
{
Object submitFormBean = event.getComponent().getAttributes().get( "submitFormBean" );
FacesContext context = FacesContext.getCurrentInstance();
if ( submitFormBean != null )
{
ValueBinding binding = context.getApplication().createValueBinding( "#{" + submitFormBean + '}' );
Object beanInstance = binding.getValue( context );
Object request = context.getExternalContext().getRequest();
assert request instanceof ServletRequest : request.getClass().getName();
ActionForm wrappedFormBean = InternalUtils.wrapFormBean( beanInstance );
InternalUtils.setForwardedFormBean( ( ServletRequest ) request, wrappedFormBean );
}
_delegate.processAction( event );
Object request = context.getExternalContext().getRequest();
assert request instanceof ServletRequest : request.getClass().getName();
ServletRequest servletRequest = ( ServletRequest ) request;
String actionURI = ( String ) servletRequest.getAttribute( PageFlowNavigationHandler.ALREADY_FORWARDED_ATTR );
if ( actionURI != null )
{
throw new AbortProcessingException( "PageFlowNavigationHandler forwarded to: " + actionURI );
}
}
}