/*
* Copyright 2002-2009 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
*
* 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.context.event;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
/**
* Interface to be implemented by objects that can manage a number of
* {@link ApplicationListener} objects, and publish events to them.
*
* <p>An {@link org.springframework.context.ApplicationEventPublisher}, typically
* a Spring {@link org.springframework.context.ApplicationContext}, can use an
* ApplicationEventMulticaster as a delegate for actually publishing events.
*
* @author Rod Johnson
* @author Juergen Hoeller
*/
public interface ApplicationEventMulticaster {
/**
* Add a listener to be notified of all events.
* @param listener the listener to add
*/
void addApplicationListener(ApplicationListener listener);
/**
* Add a listener bean to be notified of all events.
* @param listenerBeanName the name of the listener bean to add
*/
void addApplicationListenerBean(String listenerBeanName);
/**
* Remove a listener from the notification list.
* @param listener the listener to remove
*/
void removeApplicationListener(ApplicationListener listener);
/**
* Remove a listener bean from the notification list.
* @param listenerBeanName the name of the listener bean to add
*/
void removeApplicationListenerBean(String listenerBeanName);
/**
* Remove all listeners registered with this multicaster.
* <p>After a remove call, the multicaster will perform no action
* on event notification until new listeners are being registered.
*/
void removeAllListeners();
/**
* Multicast the given application event to appropriate listeners.
* @param event the event to multicast
*/
void multicastEvent(ApplicationEvent event);
}
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