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| 1 | /* | ||
| 2 | * Copyright (c) 2005, 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 | package java.awt; | ||
| 26 | |||
| 27 | interface EventFilter { | ||
| 28 | |||
| 29 | /** | ||
| 30 | * Enumeration for possible values for <code>acceptEvent(AWTEvent ev)</code> method. | ||
| 31 | * @see EventDispatchThread#pumpEventsForFilters(EventFilter) | ||
| 32 | */ | ||
| 33 | static enum FilterAction { | ||
| 34 | /** | ||
| 35 | * ACCEPT means that this filter do not filter the event and allowes other | ||
| 36 | * active filters to proceed it. If all the active filters accept the event, it | ||
| 37 | * is dispatched by the <code>EventDispatchThread</code> | ||
| 38 | * @see EventDispatchThread#pumpEventsForFilters(EventFilter) | ||
| 39 | */ | ||
| 40 | ACCEPT, | ||
| 41 | /** | ||
| 42 | * REJECT means that this filter filter the event. No other filters are queried, | ||
| 43 | * and the event is not dispatched by the <code>EventDispatchedThread</code> | ||
| 44 | * @see EventDispatchThread#pumpEventsForFilters(EventFilter) | ||
| 45 | */ | ||
| 46 | REJECT, | ||
| 47 | /** | ||
| 48 | * ACCEPT_IMMEDIATELY means that this filter do not filter the event, no other | ||
| 49 | * filters are queried and to proceed it, and it is dispatched by the | ||
| 50 | * <code>EventDispatchThread</code> | ||
| 51 | * It is not recommended to use ACCEPT_IMMEDIATELY as there may be some active | ||
| 52 | * filters not queried yet that do not accept this event. It is primarily used | ||
| 53 | * by modal filters. | ||
| 54 | * @see EventDispatchThread#pumpEventsForFilters(EventFilter) | ||
| 55 | * @see ModalEventFilter | ||
| 56 | */ | ||
| 57 | ACCEPT_IMMEDIATELY | ||
| 58 | }; | ||
| 59 | |||
| 60 | FilterAction acceptEvent(AWTEvent ev); | ||
| 61 | } | ||