001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.mina.integration.beans;
021
022import java.beans.PropertyEditor;
023import java.beans.PropertyEditorSupport;
024
025/**
026 * An abstract bi-directional {@link PropertyEditor}.
027 * 
028 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
029 */
030public abstract class AbstractPropertyEditor extends PropertyEditorSupport {
031
032    private String text;
033
034    private Object value;
035
036    private boolean trimText = true;
037
038    protected void setTrimText(boolean trimText) {
039        this.trimText = trimText;
040    }
041
042    @Override
043    public String getAsText() {
044        return text;
045    }
046
047    @Override
048    public Object getValue() {
049        return value;
050    }
051
052    @Override
053    public void setAsText(String text) throws IllegalArgumentException {
054        this.text = text;
055        if (text == null) {
056            value = defaultValue();
057        } else {
058            value = toValue(trimText ? text.trim() : text);
059        }
060    }
061
062    @Override
063    public void setValue(Object value) {
064        this.value = value;
065        if (value == null) {
066            text = defaultText();
067        } else {
068            text = toText(value);
069        }
070    }
071
072    protected String defaultText() {
073        return null;
074    }
075
076    protected Object defaultValue() {
077        return null;
078    }
079
080    protected abstract String toText(Object value);
081
082    protected abstract Object toValue(String text) throws IllegalArgumentException;
083
084}