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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      @Override
43      public String getAsText() {
44          return text;
45      }
46  
47      @Override
48      public Object getValue() {
49          return value;
50      }
51  
52      @Override
53      public void setAsText(String text) throws IllegalArgumentException {
54          this.text = text;
55          if (text == null) {
56              value = defaultValue();
57          } else {
58              value = toValue(trimText ? text.trim() : text);
59          }
60      }
61  
62      @Override
63      public void setValue(Object value) {
64          this.value = value;
65          if (value == null) {
66              text = defaultText();
67          } else {
68              text = toText(value);
69          }
70      }
71  
72      protected String defaultText() {
73          return null;
74      }
75  
76      protected Object defaultValue() {
77          return null;
78      }
79  
80      protected abstract String toText(Object value);
81  
82      protected abstract Object toValue(String text) throws IllegalArgumentException;
83  
84  }