01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
39: * made subject to such option by the copyright holder.
40: */
41: package com.sun.rave.web.ui.util;
42:
43: /**
44: * This class provides a typesafe enumeration of value types (see also
45: * ValueTypeEvaluator). The ValueTypeEvaluator and the
46: * ValueTypes are helper classes for UIComponents which accept
47: * value bindings that can be either single objects or a collection of
48: * objects (for example, an array). Typically, these components have
49: * to process input differently depending on the type of the value
50: * object.
51: *@see com.sun.rave.web.ui.util.ValueTypeEvaluator
52: *
53: */
54: public class ValueType {
55:
56: private String type;
57:
58: /** Indicates that the value binding is an array (of primitives
59: * or of objects). */
60: public static final ValueType ARRAY = new ValueType("array");
61: /** Indicates that the value binding is assigneable to a
62: * java.util.List. */
63: public static final ValueType LIST = new ValueType("list");
64: /** Indicates that the value binding is neither an array, nor
65: * does it implement java.util.List. */
66: public static final ValueType OBJECT = new ValueType("object");
67: /** Indicates that the value binding is invalid. This is a place
68: * holder, currently the ValueTypeEvaluator does not return this.
69: * It should be used to help page authors identify what the valid
70: * types are (e.g. java.util.List works, but java.util.Collection
71: *does not). */
72: public static final ValueType INVALID = new ValueType("invalid");
73: /** Indicates that no value was specified for the component. */
74: public static final ValueType NONE = new ValueType("none");
75:
76: private ValueType(String s) {
77: type = s;
78: }
79:
80: /**
81: * Get a String representation of the action
82: * @return A String representation of the value type.
83: */
84: public String toString() {
85: return type;
86: }
87: }
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