/*
 * Copyright 2012-2020 the original author or authors.
 *
 * 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
 *
 *      https://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.boot.web.servlet;

import java.util.Map;

import javax.servlet.annotation.WebListener;

import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;

Handler for @WebListener-annotated classes. 
Author:
Andy Wilkinson/**
 * Handler for {@link WebListener @WebListener}-annotated classes.
 *
 * @author Andy Wilkinson
 */
class WebListenerHandler extends ServletComponentHandler {

	WebListenerHandler() {
		super(WebListener.class);
	}

	@Override
	protected void doHandle(Map<String, Object> attributes, AnnotatedBeanDefinition beanDefinition,
			BeanDefinitionRegistry registry) {
		BeanDefinitionBuilder builder = BeanDefinitionBuilder
				.rootBeanDefinition(ServletComponentWebListenerRegistrar.class);
		builder.addConstructorArgValue(beanDefinition.getBeanClassName());
		registry.registerBeanDefinition(beanDefinition.getBeanClassName() + "Registrar", builder.getBeanDefinition());
	}

	static class ServletComponentWebListenerRegistrar implements WebListenerRegistrar {

		private final String listenerClassName;

		ServletComponentWebListenerRegistrar(String listenerClassName) {
			this.listenerClassName = listenerClassName;
		}

		@Override
		public void register(WebListenerRegistry registry) {
			registry.addWebListeners(this.listenerClassName);
		}

	}

}