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 * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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 */

package java.beans;

import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.ImageProducer;
import java.net.URL;

/**
 * This is a support class to make it easier for people to provide
 * BeanInfo classes.
 * <p>
 * It defaults to providing "noop" information, and can be selectively
 * overriden to provide more explicit information on chosen topics.
 * When the introspector sees the "noop" values, it will apply low
 * level introspection and design patterns to automatically analyze
 * the target bean.
 */

public class SimpleBeanInfo implements BeanInfo {

 /**
 * Deny knowledge about the class and customizer of the bean.
 * You can override this if you wish to provide explicit info.
 */
 public BeanDescriptor getBeanDescriptor() {
 return null;
 }

 /**
 * Deny knowledge of properties. You can override this
 * if you wish to provide explicit property info.
 */
 public PropertyDescriptor[] getPropertyDescriptors() {
 return null;
 }

 /**
 * Deny knowledge of a default property. You can override this
 * if you wish to define a default property for the bean.
 */
 public int getDefaultPropertyIndex() {
 return -1;
 }

 /**
 * Deny knowledge of event sets. You can override this
 * if you wish to provide explicit event set info.
 */
 public EventSetDescriptor[] getEventSetDescriptors() {
 return null;
 }

 /**
 * Deny knowledge of a default event. You can override this
 * if you wish to define a default event for the bean.
 */
 public int getDefaultEventIndex() {
 return -1;
 }

 /**
 * Deny knowledge of methods. You can override this
 * if you wish to provide explicit method info.
 */
 public MethodDescriptor[] getMethodDescriptors() {
 return null;
 }

 /**
 * Claim there are no other relevant BeanInfo objects. You
 * may override this if you want to (for example) return a
 * BeanInfo for a base class.
 */
 public BeanInfo[] getAdditionalBeanInfo() {
 return null;
 }

 /**
 * Claim there are no icons available. You can override
 * this if you want to provide icons for your bean.
 */
 public Image getIcon(int iconKind) {
 return null;
 }

 /**
 * This is a utility method to help in loading icon images.
 * It takes the name of a resource file associated with the
 * current object's class file and loads an image object
 * from that file. Typically images will be GIFs.
 * <p>
 * @param resourceName A pathname relative to the directory
 * holding the class file of the current class. For example,
 * "wombat.gif".
 * @return an image object. May be null if the load failed.
 */
 public Image loadImage(final String resourceName) {
 try {
 final URL url = getClass().getResource(resourceName);
 if (url != null) {
 final ImageProducer ip = (ImageProducer) url.getContent();
 if (ip != null) {
 return Toolkit.getDefaultToolkit().createImage(ip);
 }
 }
 } catch (final Exception ignored) {
 }
 return null;
 }
}