/*
 * Copyright 2006 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.
 */
package org.apache.myfaces.custom.conversation;

import java.io.IOException;

import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * add a bean under context control
 * 
 * @author imario@apache.org
 */
public class UIConversation extends AbstractConversationComponent
{


	private final static Log log = LogFactory.getLog(UIConversation.class);
	public static final String COMPONENT_TYPE = "org.apache.myfaces.Conversation";

	public void encodeBegin(FacesContext context) throws IOException
	{
		super.encodeBegin(context);
		
		elevateBean(context);
	}

	public void elevateBean(FacesContext context)
	{
		Conversation conversation = ConversationManager.getInstance().getConversation(getName());
		if (conversation == null)
		{
			throw new IllegalStateException("no conversation named '" + getName() + "' running");
		}

		// Get the Bean
		ValueBinding vb = getValueBinding("value");
		Object bean = vb.getValue(context);
	
		// Get the Managed Bean Name
		String managedBeanName = null;
		try {
			managedBeanName = ConversationUtils.getManagedBeanName(context, bean);
		} catch ( ClassNotFoundException ex ) {
			log.error("elevateBean(): (conversation = " + getName() + ") (bean = " + bean +")");	
		}
	
		if ( managedBeanName != null ) {
			conversation.putBean(managedBeanName, bean);

		
			// remove it from the other contexts
			context.getExternalContext().getRequestMap().remove(managedBeanName);
			context.getExternalContext().getSessionMap().remove(managedBeanName);
		}
	}
}