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1   /*
2    * $Id$
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.multibox;
23  
24  import jakarta.servlet.http.HttpServletRequest;
25  import jakarta.servlet.http.HttpServletResponse;
26  
27  import org.apache.struts.action.Action;
28  import org.apache.struts.action.ActionForm;
29  import org.apache.struts.action.ActionForward;
30  import org.apache.struts.action.ActionMapping;
31  
32  /**
33   * Perform any tasks and setup any data that
34   * must be prepared before the form is displayed.
35   *
36   * @version $Rev$ $Date$
37   */
38  public class PrepareMultiboxAction extends Action {
39      private static final long serialVersionUID = 5055393276157457523L;
40  
41      // ------------------------------------------------------------ Constructors
42  
43      /**
44       * Constructor for PrepareOptionsAction.
45       */
46      public PrepareMultiboxAction() {
47          super();
48      }
49  
50      // ---------------------------------------------------------- Action Methods
51  
52      /**
53       * Process the request and return an <code>ActionForward</code> instance
54       * describing where and how control should be forwarded, or
55       * <code>null</code>if the response has already been completed.
56       *
57       * @param mapping The ActionMapping used to select this instance
58       * @param form The optional ActionForm bean for this request (if any)
59       * @param request The HTTP request we are processing
60       * @param response The HTTP response we are creating
61       *
62       * @exception Exception if an exception occurs
63       *
64       * @return the ActionForward to forward control to
65       */
66      public ActionForward execute(
67          ActionMapping mapping,
68          ActionForm form,
69          HttpServletRequest request,
70          HttpServletResponse response)
71          throws Exception {
72  
73          System.out.println("Prepare MultiboxActionForm ....");
74  
75          /*
76           * Prepare a String array of color names used to generate
77           * checkboxes using html:multibox tags in the JSP page.
78           */
79          String[] colors =
80              { "Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet" };
81          request.setAttribute("colors", colors);
82  
83          /*
84           * Set default checkbox values.
85           */
86          String[] defaultFruits = { "Orange", "Banana", "Apple" };
87          String[] defaultColors = { "Orange", "Yellow" };
88          MultiboxActionForm multiboxForm = (MultiboxActionForm) form;
89          multiboxForm.setFruits(defaultFruits);
90          multiboxForm.setColors(defaultColors);
91  
92          // Return an ActionForward to the form
93          return mapping.findForward("success");
94      }
95  }