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; 018 019import org.apache.wicket.Component; 020 021/** 022 * This is a marker interface for models that can be inherited from components higher in the 023 * hierarchy. 024 * 025 * If a model implements this interface then you can give the parent container this model and all 026 * the child (recursively) components will also get and then set that model on their own if they are 027 * created with a null model 028 * 029 * <pre> 030 * Form form = new Form("form", new ModelImplementingIInheritableModel()); 031 * new TextField("textfield"); // notice textfield is created with a null model 032 * </pre> 033 * 034 * @author jcompagner 035 * @author Igor Vaynberg (ivaynberg) 036 * @param <T> 037 * The model object type 038 */ 039public interface IComponentInheritedModel<T> extends IModel<T> 040{ 041 /** 042 * @param <W> 043 * the model object type of the wrapped model 044 * @param component 045 * @return The WrapModel that wraps this model 046 */ 047 <W> IWrapModel<W> wrapOnInheritance(Component component); 048}