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 org.beryl.gui.InternationalizationManager;
25: import org.beryl.gui.View;
26: import org.beryl.gui.widgets.TextField;
27:
28: ;
29:
30: /**
31: * A strict validator which only accepts certain ASCII characters
32: */
33: public class StrictTextFieldValidator implements Validator {
34: public void validate(View view) throws ValidationException {
35: TextField field = (TextField) view;
36:
37: String text = field.getText().toLowerCase();
38: for (int i = 0; i < text.length(); i++) {
39: char c = text.charAt(i);
40:
41: if ((c >= 'a' && c <= 'z') || (c >= '0' && c <= '9')
42: || c == '-' || c == '_' || c == '@' || c == '.')
43: ;
44: else
45: throw new ValidationException(
46: view,
47: InternationalizationManager
48: .getString("xmlgui.validator.character.invalid")
49: + " \"" + text.charAt(i) + "\"");
50: }
51: }
52: }
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