1 /***
2 * Copyright (C) 2006 Philipp Mpalampanis
3 *
4 * License: MPL 1.1/GPL 2.0/LGPL 2.1
5 *
6 * The contents of this file are subject to the Mozilla Public License Version
7 * 1.1 (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 * http://www.mozilla.org/MPL/
10 *
11 * Software distributed under the License is distributed on an "AS IS" basis,
12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 * for the specific language governing rights and limitations under the
14 * License.
15 *
16 * Alternatively, the contents of this file may be used under the terms of
17 * either the GNU General Public License Version 2 or later (the "GPL"), or
18 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
19 * in which case the provisions of the GPL or the LGPL are applicable instead
20 * of those above. If you wish to allow use of your version of this file only
21 * under the terms of either the GPL or the LGPL, and not to allow others to
22 * use your version of this file under the terms of the MPL, indicate your
23 * decision by deleting the provisions above and replace them with the notice
24 * and other provisions required by the GPL or the LGPL. If you do not delete
25 * the provisions above, a recipient may use your version of this file under
26 * the terms of any one of the MPL, the GPL or the LGPL.
27 */
28
29 package net.sf.echobinding.controls;
30
31 import net.sf.echobinding.binding.BindingContext;
32
33 /***
34 * @param <T>
35 *
36 */
37 public class BoundButtonGroup<T> extends nextapp.echo2.app.button.ButtonGroup {
38
39 private static final long serialVersionUID = -6501961132887549165L;
40
41 private String _adapterId;
42 private BindingContext _ctx;
43
44 /***
45 * Creates a bound button group.
46 *
47 * @param adapterId
48 * @param context
49 */
50 public BoundButtonGroup(String adapterId, BindingContext context) {
51 super();
52 _adapterId = adapterId;
53 _ctx = context;
54 }
55
56 /***
57 * Creates a bound radio button and adds it to this group.
58 *
59 * @param adapterId The adapter id for the radio button option
60 * @param label The label of the radio button
61 * @return
62 */
63 public RadioButton<T> createButton(String adapterId, String label) {
64
65 RadioButton<T> button = new RadioButton<T>(adapterId, _ctx, label);
66 addButton( button );
67 button.setGroup( this );
68 button.update();
69 return button;
70 }
71
72 /***
73 * Returns the value saved in the model.
74 *
75 * @return
76 */
77 public Object load() {
78 return _ctx.getValue(_adapterId);
79 }
80
81 /***
82 * Update the model's value with the value of the selected button.
83 *
84 * @param value
85 */
86 public void update(Object value) {
87 _ctx.setValue(_adapterId, value);
88 }
89
90 /***
91 * Checks if the selected value is the sames as the value in the model.
92 *
93 * @param value
94 * @return
95 */
96 public boolean isDirty(Object value) {
97 return _ctx.isDirty(_adapterId, value);
98 }
99
100 /***
101 * Returns the value of the selected button.
102 *
103 * @return the value of the selected button
104 */
105 public Object getValue() {
106 for(Object rButton : getButtons() ) {
107 RadioButton button = (RadioButton) rButton;
108 if(button.isSelected())
109 return button.getOptionValue();
110 }
111 return null;
112 }
113
114 /***
115 * Selects the button whose option equals the given value.
116 * @param value
117 */
118 public void setValue(Object value) {
119 if(value == null) return;
120 for(Object rButton : getButtons() ) {
121 RadioButton button = (RadioButton) rButton;
122 button.setSelected(button.getOptionValue().equals( value ));
123 }
124 }
125 }