1 /* 2 * $Id: NestedOptionsTag.java 471754 2006-11-06 14:55:09Z husted $ 3 * 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 package org.apache.struts.taglib.nested.html; 22 23 import org.apache.struts.taglib.html.Constants; 24 import org.apache.struts.taglib.html.OptionsTag; 25 import org.apache.struts.taglib.nested.NestedNameSupport; 26 import org.apache.struts.taglib.nested.NestedPropertyHelper; 27 28 import javax.servlet.http.HttpServletRequest; 29 import javax.servlet.jsp.JspException; 30 31 /** 32 * NestedOptionsTag. 33 * 34 * @version $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004) 35 * $ 36 * @since Struts 1.1 37 */ 38 public class NestedOptionsTag extends OptionsTag implements NestedNameSupport { 39 /* the usual private member variables */ 40 private String originalName = null; 41 private String originalProperty = null; 42 private String originalLabelProperty = null; 43 44 /** 45 * Overriding method of the heart of the matter. Gets the relative 46 * property and leaves the rest up to the original tag implementation. 47 * Sweet. 48 * 49 * @return int JSP continuation directive. This is in the hands of the 50 * super class. 51 */ 52 public int doStartTag() throws JspException { 53 // get the original properties 54 originalName = getName(); 55 originalProperty = getProperty(); 56 originalLabelProperty = getLabelProperty(); 57 58 // request 59 HttpServletRequest request = 60 (HttpServletRequest) pageContext.getRequest(); 61 62 // if we have a label property 63 if (originalLabelProperty != null) { 64 // do the label property first 65 if ((getName() == null) || Constants.BEAN_KEY.equals(getName())) { 66 super.setLabelProperty(NestedPropertyHelper.getAdjustedProperty( 67 request, originalLabelProperty)); 68 } else { 69 super.setLabelProperty(originalLabelProperty); 70 } 71 } 72 73 // set the other properties 74 NestedPropertyHelper.setNestedProperties(request, this); 75 76 // let the super do it's thing 77 return super.doStartTag(); 78 } 79 80 /** 81 * Complete the processing of the tag. The nested tags here will restore 82 * all the original value for the tag itself and the nesting context. 83 * 84 * @return int to describe the next step for the JSP processor 85 * @throws JspException for the bad things JSP's do 86 */ 87 public int doEndTag() throws JspException { 88 // do the super's ending part 89 int i = super.doEndTag(); 90 91 // reset the properties 92 setName(originalName); 93 setProperty(originalProperty); 94 setLabelProperty(originalLabelProperty); 95 96 // continue 97 return i; 98 } 99 100 /** 101 * Release the tag's resources and reset the values. 102 */ 103 public void release() { 104 super.release(); 105 106 // reset the originals 107 originalName = null; 108 originalProperty = null; 109 originalLabelProperty = null; 110 } 111 }