framework/src/main/java/org/apache/felix/moduleloader/ModuleListener.java

/*
 * 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.felix.moduleloader;

import java.util.EventListener;

/**
 * <p>
 * This interface is an event listener for <tt>ModuleEvent</tt> events.
 * To receive events, an implementation of this listener must be added
 * to the <tt>IModuleFactory</tt> instance.
 * </p>
 * @see org.apache.felix.moduleloader.IModuleFactory
 * @see org.apache.felix.moduleloader.ModuleEvent
**/
public interface ModuleListener extends EventListener
{
    /**
     * <p>
     * This method is called after a module is added to the
     * <tt>IModuleFactory</tt>.
     * </p>
     * @param event the event object containing the event details.
    **/
    public void moduleAdded(ModuleEvent event);

    /**
     * <p>
     * This method is called after a module is remove from the
     * <tt>IModuleFactory</tt>.
     * </p>
     * @param event the event object containing the event details.
    **/
    public void moduleRemoved(ModuleEvent event);

    /**
     * This is an experimental method that is likely to change or go
     * away - so don't use it for now.
     *
     * Note to self, we need to think about what the implications of
     * this are and whether we are fine with them.
     */
    public void moduleRefreshed(ModuleEvent event);
}