1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.integration.beans;
21
22 import java.beans.PropertyEditor;
23 import java.beans.PropertyEditorSupport;
24
25 /**
26 * An abstract bi-directional {@link PropertyEditor}.
27 *
28 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
29 */
30 public abstract class AbstractPropertyEditor extends PropertyEditorSupport {
31
32 private String text;
33
34 private Object value;
35
36 private boolean trimText = true;
37
38 protected void setTrimText(boolean trimText) {
39 this.trimText = trimText;
40 }
41
42 /**
43 * {@inheritDoc}
44 */
45 @Override
46 public String getAsText() {
47 return text;
48 }
49
50 /**
51 * {@inheritDoc}
52 */
53 @Override
54 public Object getValue() {
55 return value;
56 }
57
58 /**
59 * {@inheritDoc}
60 */
61 @Override
62 public void setAsText(String text) {
63 this.text = text;
64
65 if (text == null) {
66 value = defaultValue();
67 } else {
68 value = toValue(trimText ? text.trim() : text);
69 }
70 }
71
72 /**
73 * {@inheritDoc}
74 */
75 @Override
76 public void setValue(Object value) {
77 this.value = value;
78
79 if (value == null) {
80 text = defaultText();
81 } else {
82 text = toText(value);
83 }
84 }
85
86 /**
87 * @return The default text
88 */
89 protected String defaultText() {
90 return null;
91 }
92
93 /**
94 * @return The default value
95 */
96 protected Object defaultValue() {
97 return null;
98 }
99
100 /**
101 * Returns a String representation of the given value
102 *
103 * @param value The value
104 * @return A String representation of the value
105 */
106 protected abstract String toText(Object value);
107
108 /**
109 * Returns an instance from a String representation of an object
110 *
111 * @param text The String representation to convert
112 * @return A instance of an object
113 */
114 protected abstract Object toValue(String text);
115 }