1/* 2 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package javax.imageio.spi; 27 28/** 29 * An optional interface that may be provided by service provider 30 * objects that will be registered with a 31 * {@code ServiceRegistry}. If this interface is present, 32 * notification of registration and deregistration will be performed. 33 * 34 * @see ServiceRegistry 35 * 36 */ 37public interface RegisterableService { 38 39 /** 40 * Called when an object implementing this interface is added to 41 * the given {@code category} of the given 42 * {@code registry}. The object may already be registered 43 * under another category or categories. 44 * 45 * @param registry a {@code ServiceRegistry} where this 46 * object has been registered. 47 * @param category a {@code Class} object indicating the 48 * registry category under which this object has been registered. 49 */ 50 void onRegistration(ServiceRegistry registry, Class<?> category); 51 52 /** 53 * Called when an object implementing this interface is removed 54 * from the given {@code category} of the given 55 * {@code registry}. The object may still be registered 56 * under another category or categories. 57 * 58 * @param registry a {@code ServiceRegistry} from which this 59 * object is being (wholly or partially) deregistered. 60 * @param category a {@code Class} object indicating the 61 * registry category from which this object is being deregistered. 62 */ 63 void onDeregistration(ServiceRegistry registry, Class<?> category); 64} 65