CollectionSelector


1   /*
2     Copyright (C) 2003 Laurent Martelli <laurent@aopsys.com>
3     
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU Lesser General Public License as
6     published by the Free Software Foundation; either version 2 of the
7     License, or (at your option) any later version.
8   
9     This program is distributed in the hope that it will be useful, but
10    WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12    Lesser General Public License for more details.
13  
14    You should have received a copy of the GNU Lesser General Public
15    License along with this program; if not, write to the Free Software
16    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17    USA */
18  
19  package org.objectweb.jac.aspects.gui.web;
20  
21  import java.io.PrintWriter  ;
22  import java.util.List  ;
23  import java.util.Vector  ;
24  import org.objectweb.jac.core.NameRepository;
25  
26  /**
27   * Selects objects from a collection with check boxes
28   */
29  public class CollectionSelector extends AbstractView 
30      implements JacRequestReader
31  {
32      Vector   selection = new Vector  ();
33      /**
34       * @param name the name for generated HTML <input> elements
35       */
36      public CollectionSelector(String   name) {
37          this.label = name;
38      }
39  
40      NameRepository nameRepository = (NameRepository)NameRepository.get();
41  
42      /**
43       * Generate a checkbox for an item of the collection
44       */
45      public void genHTML(PrintWriter   out, Object   object) {
46          out.print("<input type=\"checkbox\" name=\""+label+"\" "+
47                    "value=\""+nameRepository.getName(object)+"\"");
48          printAttributes(out);
49          out.println(">");
50      }
51  
52      public void readValue(JacRequest request) {
53          selection.clear();
54          String  [] names = (String  [])request.getParameters(label);
55          if (names!=null) {
56              for (int i=0; i<names.length; i++) {
57                  selection.add(nameRepository.getObject(names[i]));
58              }
59          }
60      }
61  
62      public List getSelection() {
63          return selection;
64      }
65  }
66  
67
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