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.model.util; 018 019import java.util.ArrayList; 020import java.util.List; 021 022 023/** 024 * Based on <code>Model</code> but for lists of serializable objects. 025 * 026 * @author Timo Rantalaiho 027 * @param <T> 028 * type of object inside list 029 */ 030public class ListModel<T> extends GenericBaseModel<List<T>> 031{ 032 private static final long serialVersionUID = 1L; 033 034 /** 035 * Creates empty model 036 */ 037 public ListModel() 038 { 039 } 040 041 /** 042 * Creates model that will contain <code>list</code> 043 * 044 * @param list 045 */ 046 public ListModel(List<T> list) 047 { 048 setObject(list); 049 } 050 051 @Override 052 protected List<T> createSerializableVersionOf(List<T> object) 053 { 054 if (object == null) 055 { 056 return null; 057 } 058 else 059 { 060 return new ArrayList<>(object); 061 } 062 } 063}