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}