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.protocol.ws.api.event; 018 019import org.apache.wicket.protocol.ws.api.WebSocketRequestHandler; 020import org.apache.wicket.util.lang.Args; 021 022/** 023 * A base class for all event broadcasting payloads for WebSocket messages. 024 * 025 * @since 6.0 026 */ 027public abstract class WebSocketPayload<T> 028{ 029 private final WebSocketRequestHandler handler; 030 031 public WebSocketPayload(final WebSocketRequestHandler handler) 032 { 033 this.handler = Args.notNull(handler, "handler"); 034 } 035 036 public abstract T getMessage(); 037 038 public final WebSocketRequestHandler getHandler() 039 { 040 return handler; 041 } 042}