01: /***************************************************************
02: * This file is part of the [fleXive](R) project.
03: *
04: * Copyright (c) 1999-2007
05: * UCS - unique computing solutions gmbh (http://www.ucs.at)
06: * All rights reserved
07: *
08: * The [fleXive](R) project is free software; you can redistribute
09: * it and/or modify it under the terms of the GNU General Public
10: * License as published by the Free Software Foundation;
11: * either version 2 of the License, or (at your option) any
12: * later version.
13: *
14: * The GNU General Public License can be found at
15: * http://www.gnu.org/copyleft/gpl.html.
16: * A copy is found in the textfile GPL.txt and important notices to the
17: * license from the author are found in LICENSE.txt distributed with
18: * these libraries.
19: *
20: * This library is distributed in the hope that it will be useful,
21: * but WITHOUT ANY WARRANTY; without even the implied warranty of
22: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23: * GNU General Public License for more details.
24: *
25: * For further information about UCS - unique computing solutions gmbh,
26: * please see the company website: http://www.ucs.at
27: *
28: * For further information about [fleXive](R), please see the
29: * project website: http://www.flexive.org
30: *
31: *
32: * This copyright notice MUST APPEAR in all copies of the file!
33: ***************************************************************/package com.flexive.faces.converter;
34:
35: import org.apache.commons.lang.StringUtils;
36:
37: import javax.faces.component.UIComponent;
38: import javax.faces.context.FacesContext;
39: import javax.faces.convert.Converter;
40:
41: /**
42: * Generic JSF enum converter. Drop this as soon as we migrate to JSF 1.2.
43: *
44: * @author Daniel Lichtenberger (daniel.lichtenberger@flexive.com), UCS - unique computing solutions gmbh (http://www.ucs.at)
45: * @version $Rev: 1 $
46: */
47: public class EnumConverter implements Converter {
48:
49: /**
50: * {@inheritDoc}
51: */
52: @SuppressWarnings({"unchecked"})
53: public Object getAsObject(FacesContext facesContext,
54: UIComponent uiComponent, String value) {
55: if (StringUtils.isBlank(value)) {
56: return null;
57: }
58: String[] values = value.split("::");
59: if (values.length != 2) {
60: throw new IllegalArgumentException(
61: "Invalid argument for enum converter: " + value);
62: }
63: try {
64: return Enum.valueOf((Class<? extends Enum>) Class
65: .forName(values[0]), values[1]);
66: } catch (ClassNotFoundException e) {
67: throw new IllegalArgumentException(e);
68: }
69: }
70:
71: /**
72: * {@inheritDoc}
73: */
74: public String getAsString(FacesContext facesContext,
75: UIComponent uiComponent, Object object) {
76: if (object == null) {
77: return null;
78: }
79: Enum value = (Enum) object;
80: // replace inner class suffixes of class name and append enum name
81: return value.getClass().getName().replaceFirst("\\$\\d+$", "")
82: + "::" + value.name();
83: }
84: }
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