/**
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.mina.integration.beans;

import java.beans.PropertyEditor;
import java.beans.PropertyEditorSupport;

/**
 * An abstract bi-directional {@link PropertyEditor}.
 * 
 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
 */
public abstract class AbstractPropertyEditor extends PropertyEditorSupport {

    private String text;
    private Object value;
    private boolean trimText = true;
    
    protected void setTrimText(boolean trimText) {
        this.trimText = trimText;
    }

    @Override
    public String getAsText() {
        return text;
    }

    @Override
    public Object getValue() {
        return value;
    }

    @Override
    public void setAsText(String text) throws IllegalArgumentException {
        this.text = text;
        if (text == null) {
            value = defaultValue();
        } else {
            value = toValue(trimText? text.trim() : text);
        }
    }

    @Override
    public void setValue(Object value) {
        this.value = value;
        if (value == null) {
            text = defaultText();
        } else {
            text = toText(value);
        }
    }
    
    protected String defaultText() {
        return null;
    }
    
    protected Object defaultValue() {
        return null;
    }

    protected abstract String toText(Object value);
    protected abstract Object toValue(String text) throws IllegalArgumentException;
    
}
