/**
 * 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.cxf.bus.spring;

import org.apache.cxf.Bus;
import org.apache.cxf.bus.CXFBusImpl;
import org.apache.cxf.buslifecycle.BusLifeCycleManager;
import org.apache.cxf.common.injection.NoJSR250Annotations;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.context.support.AbstractApplicationContext;

/**
 * 
 */
@NoJSR250Annotations
public class BusApplicationListener implements ApplicationListener, ApplicationContextAware {
    AbstractApplicationContext ctx;
    
    /** {@inheritDoc}*/
    public void onApplicationEvent(ApplicationEvent event) {
        if (ctx == null) {
            return;
        }
        boolean doIt = false;
        ApplicationContext ac = ctx;
        while (ac != null && !doIt) {
            if (event.getSource() == ac) {
                doIt = true;
                break;
            }
            ac = ac.getParent();
        }
        
        if (doIt) {
            if (event instanceof ContextRefreshedEvent) {
                Bus bus = (Bus)ctx.getBean("cxf");
                ((CXFBusImpl)bus).initialize();
                BusLifeCycleManager lcm = (BusLifeCycleManager)
                    ctx.getBean("org.apache.cxf.buslifecycle.BusLifeCycleManager",
                            BusLifeCycleManager.class);
                lcm.initComplete();
            } else if (event instanceof ContextClosedEvent && ctx.isActive()) {
                // To avoid the ctx to be closed twice
                BusLifeCycleManager lcm = (BusLifeCycleManager)ctx
                    .getBean("org.apache.cxf.buslifecycle.BusLifeCycleManager", BusLifeCycleManager.class);
                lcm.postShutdown();

            }
        }
    }

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (applicationContext instanceof AbstractApplicationContext) {
            ctx = (AbstractApplicationContext)applicationContext;
            ctx.addApplicationListener(this);
            ApplicationContext ac = applicationContext.getParent();
            while (ac != null) {
                if (ac instanceof AbstractApplicationContext) {
                    ((AbstractApplicationContext)ac).addApplicationListener(this);
                }
                ac = ac.getParent();
            }
        }        
    }

}
