01: /*
02: * Beryl - A web platform based on XML, XSLT and Java
03: * This file is part of the Beryl XML GUI
04: *
05: * Copyright (C) 2004 Wenzel Jakob <wazlaf@tigris.org>
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11:
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-3107 USA
20: */
21:
22: package org.beryl.gui.validators;
23:
24: import gnu.regexp.RE;
25:
26: import org.beryl.gui.GUIException;
27: import org.beryl.gui.InternationalizationManager;
28: import org.beryl.gui.View;
29: import org.beryl.gui.widgets.TextField;
30:
31: /**
32: * A validator for email addresses
33: */
34: public class EmailValidator implements Validator {
35: private String sPattern = "^[\\w\\d\\.-]{1,50}@[\\w\\d-]{1,50}\\.[\\w\\.]{2,8}$";
36:
37: public void validate(View view) throws ValidationException,
38: GUIException {
39: TextField field = (TextField) view;
40: String validationString = field.getText();
41:
42: RE r = null;
43:
44: try {
45: r = new RE(sPattern);
46: } catch (Exception e) {
47: throw new GUIException(
48: "Error while constructing a regular expression", e);
49: }
50:
51: if (r != null) {
52: if (!r.isMatch(validationString)) {
53: throw new ValidationException(
54: view,
55: InternationalizationManager
56: .getString("xmlgui.validator.email.invalid"));
57: }
58: }
59: }
60: }
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