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.validation;
30
31 import net.sf.echobinding.BoundControl;
32 import nextapp.echo2.app.*;
33
34
35 /***
36 * The default validation handler. Draws a red border line around invalid bound controls.
37 *
38 */
39 public class DefaultValidationHandler implements ValidationHandler {
40
41 private static Border INVALID_BORDER = new Border(1, Color.RED, Border.STYLE_SOLID );
42
43 private Border _originalBorder;
44
45 /***
46 *
47 */
48 public DefaultValidationHandler(Component widget) {
49 super();
50 if ( ! ( widget instanceof BoundControl ) )
51 throw new RuntimeException("Not a bound control. Unsupported control type.: "+widget.getClass() );
52
53 _originalBorder = ((BoundControl) widget).getBorder();
54 }
55
56
57
58
59 public void markInvalid(Component widget) {
60
61 if (widget instanceof BoundControl) {
62 BoundControl control = ((BoundControl) widget);
63 setBorder( control, INVALID_BORDER );
64 }
65 }
66
67
68
69
70 public void markValid(Component widget) {
71
72 if (widget instanceof BoundControl) {
73 BoundControl control = ((BoundControl) widget);
74 setBorder( control, _originalBorder );
75 }
76 }
77
78 /***
79 * @param widget
80 * @param border The border to set
81 * @return
82 */
83 private void setBorder(BoundControl widget, Border border) {
84 Border currentBorder = widget.getBorder();
85 if( border == null ) {
86 if( currentBorder == null )
87 return;
88 }
89 else if( currentBorder != null && _originalBorder.equals( currentBorder) ) {
90 return;
91 }
92
93 widget.setBorder( border );
94 }
95
96 }