001/*
002 * Copyright 2002-2015 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.web.servlet.tags;
018
019import javax.servlet.jsp.JspTagException;
020
021import org.springframework.lang.Nullable;
022
023/**
024 * Allows implementing tag to utilize nested {@code spring:argument} tags.
025 *
026 * @author Nicholas Williams
027 * @since 4.0
028 * @see ArgumentTag
029 */
030public interface ArgumentAware {
031
032        /**
033         * Callback hook for nested spring:argument tags to pass their value
034         * to the parent tag.
035         * @param argument the result of the nested {@code spring:argument} tag
036         */
037        void addArgument(@Nullable Object argument) throws JspTagException;
038
039}