// Copyright 2013 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.tapestry5.cdi.extension;

import javax.enterprise.event.Observes;
import javax.enterprise.inject.spi.AfterBeanDiscovery;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.Extension;

/**
 * A Holder that provides the {@link javax.enterprise.inject.spi.BeanManager BeanManager} instance by observing the CDI {@link javax.enterprise.inject.spi.AfterBeanDiscovery AfterBeanDiscovery} event
 *
 */
public class BeanManagerHolder implements Extension {
    private static BeanManagerHolder HOLDER = new BeanManagerHolder();
    private BeanManager beanManager;

    public static BeanManager get() {
        return HOLDER.beanManager;
    }

    /**
     * Store the {@link javax.enterprise.inject.spi.BeanManager BeanManager} during the container startup
     * @param afterBeanDiscovery the CDI event
     * @param bm a BeanManager object
     */
    protected void saveBeanManager(@Observes final AfterBeanDiscovery afterBeanDiscovery, final BeanManager bm) {
    	HOLDER.beanManager = bm;
    }
}

