/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.cayenne.swing;

import java.awt.Component;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

/**
 * A binding for connecting to children that implement BoundComponent.
 * 
 * @since 1.2
 * @author Andrei Adamchik
 */
public class PropertyBinding extends BindingBase {

    protected BoundComponent boundComponent;
    protected String boundExpression;

    public PropertyBinding(BoundComponent boundComponent, String propertyExpression,
            String boundExpression) {
        super(propertyExpression);

        this.boundExpression = boundExpression;
        this.boundComponent = boundComponent;
        this.boundComponent.addPropertyChangeListener(boundExpression,
                new PropertyChangeListener() {

                    public void propertyChange(PropertyChangeEvent event) {
                        setValue(event.getNewValue());
                    }

                });
    }

    public Component getView() {
        return boundComponent.getView();
    }

    public void updateView() {
        boundComponent.bindingUpdated(boundExpression, getValue());
    }
}
