1 /*
2 * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.beans;
27
28 import java.awt.Image;
29 import java.awt.Toolkit;
30 import java.io.InputStream;
31 import java.security.AccessController;
32 import java.security.PrivilegedAction;
33
34 /**
35 * This is a support class to make it easier for people to provide
36 * BeanInfo classes.
37 * <p>
38 * It defaults to providing "noop" information, and can be selectively
39 * overriden to provide more explicit information on chosen topics.
40 * When the introspector sees the "noop" values, it will apply low
41 * level introspection and design patterns to automatically analyze
42 * the target bean.
43 *
44 * @since 1.1
45 */
46 public class SimpleBeanInfo implements BeanInfo {
47
48 /**
49 * Deny knowledge about the class and customizer of the bean.
50 * You can override this if you wish to provide explicit info.
165 */
166 private Image loadImage(final String resourceName, final String suffix) {
167 final String prefix = "/javax/swing/beaninfo/images/";
168 final Image image = loadStandardImage(prefix + resourceName + suffix);
169 return image == null ? loadStandardImage(prefix + "JComponent" + suffix)
170 : image;
171 }
172
173 /**
174 * This is a utility method to help in loading icon images.
175 * It takes the name of a resource file associated with the
176 * current object's class file and loads an image object
177 * from that file. Typically images will be GIFs.
178 *
179 * @param resourceName A pathname relative to the directory
180 * holding the class file of the current class. For example,
181 * "wombat.gif".
182 * @return an image object. May be null if the load failed.
183 */
184 public Image loadImage(final String resourceName) {
185 try (InputStream in = getClass().getResourceAsStream(resourceName)) {
186 return Toolkit.getDefaultToolkit().createImage(in.readAllBytes());
187 } catch (final Exception ignored) {
188 }
189 return null;
190 }
191 }
|
1 /*
2 * Copyright (c) 1996, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.beans;
27
28 import java.awt.Image;
29 import java.awt.Toolkit;
30 import java.awt.image.ImageProducer;
31 import java.net.URL;
32 import java.security.AccessController;
33 import java.security.PrivilegedAction;
34
35 /**
36 * This is a support class to make it easier for people to provide
37 * BeanInfo classes.
38 * <p>
39 * It defaults to providing "noop" information, and can be selectively
40 * overriden to provide more explicit information on chosen topics.
41 * When the introspector sees the "noop" values, it will apply low
42 * level introspection and design patterns to automatically analyze
43 * the target bean.
44 *
45 * @since 1.1
46 */
47 public class SimpleBeanInfo implements BeanInfo {
48
49 /**
50 * Deny knowledge about the class and customizer of the bean.
51 * You can override this if you wish to provide explicit info.
166 */
167 private Image loadImage(final String resourceName, final String suffix) {
168 final String prefix = "/javax/swing/beaninfo/images/";
169 final Image image = loadStandardImage(prefix + resourceName + suffix);
170 return image == null ? loadStandardImage(prefix + "JComponent" + suffix)
171 : image;
172 }
173
174 /**
175 * This is a utility method to help in loading icon images.
176 * It takes the name of a resource file associated with the
177 * current object's class file and loads an image object
178 * from that file. Typically images will be GIFs.
179 *
180 * @param resourceName A pathname relative to the directory
181 * holding the class file of the current class. For example,
182 * "wombat.gif".
183 * @return an image object. May be null if the load failed.
184 */
185 public Image loadImage(final String resourceName) {
186 try {
187 final URL url = getClass().getResource(resourceName);
188 if (url != null) {
189 final ImageProducer ip = (ImageProducer) url.getContent();
190 if (ip != null) {
191 return Toolkit.getDefaultToolkit().createImage(ip);
192 }
193 }
194 } catch (final Exception ignored) {
195 }
196 return null;
197 }
198 }
|