1 /*
2 * $Id: PrepareOptionsAction.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
22 package examples.options;
23
24 import java.util.ArrayList;
25 import java.util.HashMap;
26
27 import javax.servlet.http.HttpServletRequest;
28 import javax.servlet.http.HttpServletResponse;
29
30 import org.apache.struts.action.Action;
31 import org.apache.struts.action.ActionForm;
32 import org.apache.struts.action.ActionForward;
33 import org.apache.struts.action.ActionMapping;
34 import org.apache.struts.util.LabelValueBean;
35
36 /**
37 * Perform any tasks and setup any data that
38 * must be prepared before the form is displayed.
39 *
40 * @version $Rev: 471754 $ $Date: 2006-11-06 08:55:09 -0600 (Mon, 06 Nov 2006) $
41 */
42 public class PrepareOptionsAction extends Action {
43
44 // ------------------------------------------------------------ Constructors
45
46 /**
47 * Constructor for PrepareOptionsAction.
48 */
49 public PrepareOptionsAction() {
50 super();
51 }
52
53 // ---------------------------------------------------------- Action Methods
54
55 /**
56 * Process the request and return an <code>ActionForward</code> instance
57 * describing where and how control should be forwarded, or
58 * <code>null</code>if the response has already been completed.
59 *
60 * @param mapping The ActionMapping used to select this instance
61 * @param form The optional ActionForm bean for this request (if any)
62 * @param request The HTTP request we are processing
63 * @param response The HTTP response we are creating
64 *
65 * @exception Exception if an exception occurs
66 *
67 * @return the ActionForward to forward control to
68 */
69 public ActionForward execute(
70 ActionMapping mapping,
71 ActionForm form,
72 HttpServletRequest request,
73 HttpServletResponse response)
74 throws Exception {
75
76 /* An array */
77 String[] fruits =
78 {
79 "Strawberry",
80 "Apple",
81 "Orange",
82 "Pear",
83 "Mango",
84 "Banana",
85 "Pineapple" };
86 request.setAttribute("fruits", fruits);
87
88 /* Two arrays - one for labels and one for values */
89 String[] colors =
90 { "Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet" };
91 request.setAttribute("colors", colors);
92
93 String[] colorCodes =
94 {
95 "#FF0000",
96 "#FFA500",
97 "#FFFF00",
98 "#00FF00",
99 "#0000FF",
100 "#4B0082",
101 "#EE82EE" };
102 request.setAttribute("colorCodes", colorCodes);
103
104 /* A Collection */
105 ArrayList colorList = new ArrayList();
106 colorList.add("Red");
107 colorList.add("Orange");
108 colorList.add("Yellow");
109 colorList.add("Green");
110 colorList.add("Blue");
111 colorList.add("Indigo");
112 colorList.add("Violet");
113 request.setAttribute("colorCollection", colorList);
114
115 /* A Collection of LabelValue beans */
116 ArrayList days = new ArrayList();
117 days.add(new LabelValueBean("Monday", "1"));
118 days.add(new LabelValueBean("Tuesday", "2"));
119 days.add(new LabelValueBean("Wednesday", "3"));
120 days.add(new LabelValueBean("Thursday", "4"));
121 days.add(new LabelValueBean("Friday", "5"));
122 days.add(new LabelValueBean("Saturday", "6"));
123 days.add(new LabelValueBean("Sunday", "7"));
124 request.setAttribute("days", days);
125
126 /* Collection of custom beans */
127 ArrayList books = new ArrayList();
128 books.add(new BookBean("0596003285", "Programming Jakarta Struts"));
129 books.add(new BookBean("1930110502", "Struts in Action"));
130 books.add(
131 new BookBean("1861007817", "Professional Struts Applications"));
132 books.add(new BookBean("0672324725", "Struts Kick Start"));
133 books.add(new BookBean("0471213020", "Mastering Jakarta Struts"));
134 books.add(new BookBean("1558608621", "The Struts Framework"));
135 books.add(new BookBean("0971661901", "Struts Fast Track"));
136 request.setAttribute("books", books);
137
138 /* A Map
139 *
140 * Note: We are using a HashMap which is unsorted - the resulting
141 * options could appear in any order. If you want to your options to be
142 * in a particular order you should you a SortedMap implementation such
143 * as the TreeMap. This behaviour is a feature of the standard Map
144 * implementaions and nothing to to with Struts tags.
145 *
146 * Also, we've used an Integer as the key to demonstrate that the
147 * <html:options> and <html:optionsCollection> tags do not require
148 * String values for the label and values. If they are passed an object
149 * other than a String, they will automatically call the toString()
150 * method and use the result.
151 */
152 HashMap animals = new HashMap();
153 animals.put(new Integer(1), "Cat");
154 animals.put(new Integer(2), "Dog");
155 animals.put(new Integer(3), "Horse");
156 animals.put(new Integer(4), "Rabbit");
157 animals.put(new Integer(5), "Goldfish");
158 request.setAttribute("animals", animals);
159
160 // Forward to form page
161 return mapping.findForward("success");
162
163 }
164
165 }