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.util.visit;
018
019/**
020 * Generic visitor interface for traversals.
021 * 
022 * @param <T>
023 *            type of object to be visited
024 * @param <R>
025 *            type of value the visitor should return as the result of the visit/traversal
026 */
027@FunctionalInterface
028public interface IVisitor<T, R>
029{
030        /**
031         * Called at each object in a visit.
032         * 
033         * @param object
034         *            Object being visited
035         * @param visit
036         *            Object used to control the visit/traversal
037         */
038        void component(T object, IVisit<R> visit);
039}