    001    // Copyright 2006, 2011 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    //     http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.ioc.services;
    016
    017    /**
    018     * Event hub for notifications when the IOC {@link org.apache.tapestry5.ioc.Registry} shuts down.
    019     */
    020    public interface RegistryShutdownHub
    021    {
    022        /**
    023         * Adds a listener for eventual notification.
    024         */
    025        void addRegistryShutdownListener(RegistryShutdownListener listener);
    026
    027        /**
    028         * Adds a listener for eventual notification when the registry shuts down.  Runtime exceptions thrown by the listener
    029         * will be logged and ignored.
    030         *
    031         * @since 5.3
    032         */
    033        void addRegistryShutdownListener(Runnable listener);
    034
    035        /**
    036         * Adds a listener for eventual notification. RegistryWillShutdownListeners are notified before any standard listeners,
    037         * and before service proxies and other parts of the Registry are  disabled. Runtime exceptions thrown by the listener will
    038         * be logged and ignored.
    039         *
    040         * @since 5.3
    041         */
    042        void addRegistryWillShutdownListener(Runnable listener);
    043    }