001/* 002 * GWTEventService 003 * Copyright (c) 2011 and beyond, strawbill UG (haftungsbeschr?nkt) 004 * 005 * This is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as 007 * published by the Free Software Foundation; either version 3 of 008 * the License, or (at your option) any later version. 009 * Other licensing for GWTEventService may also be possible on request. 010 * Please view the license.txt of the project for more information. 011 * 012 * This software is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * You should have received a copy of the GNU Lesser General Public 018 * License along with this software; if not, write to the Free 019 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 020 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 021 */ 022package de.novanic.eventservice.client.connection.callback; 023 024import com.google.gwt.user.client.rpc.AsyncCallback; 025 026/** 027 * Simple wrapper class to wrap another callback. That makes it possible to execute custom actions before or after 028 * the wrapped callback is called. 029 * 030 * @author sstrohschein 031 * <br>Date: 02.08.2010 032 * <br>Time: 21:23:09 033 */ 034public class AsyncCallbackWrapper<T> implements AsyncCallback<T> 035{ 036 private final AsyncCallback<T> myAsyncCallback; 037 038 public AsyncCallbackWrapper(AsyncCallback<T> anAsyncCallback) { 039 myAsyncCallback = anAsyncCallback; 040 } 041 042 public void onSuccess(T anObject) { 043 if(myAsyncCallback != null) { 044 myAsyncCallback.onSuccess(anObject); 045 } 046 } 047 048 public void onFailure(Throwable aThrowable) { 049 if(myAsyncCallback != null) { 050 myAsyncCallback.onFailure(aThrowable); 051 } 052 } 053 054 protected AsyncCallback<T> getCallback() { 055 return myAsyncCallback; 056 } 057}