org.apache.cayenne.swing.PropertyBinding Maven / Gradle / Ivy

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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
 */
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());
    }
}