001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.event; 018 019/** 020 * An event 021 * 022 * @author Igor Vaynberg (ivaynberg) 023 * @param <T> 024 * type of event payload 025 */ 026public interface IEvent<T> 027{ 028 /** 029 * Stops any further broadcast of this event 030 */ 031 void stop(); 032 033 /** 034 * @return true iff event has been stopped. 035 */ 036 boolean isStop(); 037 038 /** 039 * Stops the broadcast of this event any deeper into the hierarchy of the current sink 040 */ 041 void dontBroadcastDeeper(); 042 043 /** 044 * @return type of broadcast that should be used to pass this event on 045 */ 046 Broadcast getType(); 047 048 /** 049 * @return the source of event 050 */ 051 IEventSource getSource(); 052 053 /** 054 * @return payload 055 */ 056 T getPayload(); 057}