/*
 * Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * 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.springframework.security.web.session;

import javax.servlet.http.HttpSession;

import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.session.SessionDestroyedEvent;

import java.util.*;

/**
 * Published by the {@link HttpSessionEventPublisher} when a HttpSession is created in the
 * container
 *
 * @author Ray Krueger
 * @author Luke Taylor
 * @author Rob Winch
 */
public class HttpSessionDestroyedEvent extends SessionDestroyedEvent {
	// ~ Constructors
	// ===================================================================================================

	public HttpSessionDestroyedEvent(HttpSession session) {
		super(session);
	}

	public HttpSession getSession() {
		return (HttpSession) getSource();
	}

	@SuppressWarnings("unchecked")
	@Override
	public List<SecurityContext> getSecurityContexts() {
		HttpSession session = getSession();

		Enumeration<String> attributes = session.getAttributeNames();

		ArrayList<SecurityContext> contexts = new ArrayList<SecurityContext>();

		while (attributes.hasMoreElements()) {
			String attributeName = attributes.nextElement();
			Object attributeValue = session.getAttribute(attributeName);
			if (attributeValue instanceof SecurityContext) {
				contexts.add((SecurityContext) attributeValue);
			}
		}

		return contexts;
	}

	@Override
	public String getId() {
		return getSession().getId();
	}
}
