PropertyChangeProxyTargetBinding.java example

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/*
 * Copyright 2008 the original author or authors.
 *
 * 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.codehaus.groovy.binding;

import org.codehaus.groovy.runtime.InvokerHelper;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;

public class PropertyChangeProxyTargetBinding implements TargetBinding {
    Object proxyObject;
    String propertyName;
    PropertyChangeListener listener;

    public PropertyChangeProxyTargetBinding(Object proxyObject, String propertyName, PropertyChangeListener listener) {
        this.proxyObject = proxyObject;
        this.propertyName = propertyName;
        this.listener = listener;
    }

    public void updateTargetValue(Object value) {
        listener.propertyChange(new PropertyChangeEvent(proxyObject, propertyName,
                InvokerHelper.getProperty(proxyObject, propertyName), value));
    }
}