1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * ident	"%Z%%M%	%I%	%E% SMI"
24  *
25  * Copyright 2002 by Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  */
28 package com.sun.dhcpmgr.ui;
29 
30 import javax.swing.JButton;
31 import javax.swing.ImageIcon;
32 import java.io.InputStream;
33 import java.io.BufferedInputStream;
34 import java.io.ByteArrayOutputStream;
35 import java.io.IOException;
36 
37 /**
38  * A button with an image loaded from a gif file.  To use this class, extend it
39  * and in your constructor call setImage().
40  */
41 public abstract class ImageButton extends JButton {
42 
43     /**
44      * Sets the button's icon to the image loaded from the file; falls back the
45      * specified text if for some reason the icon can't be loaded.  Base class
46      * is used to find the gif image in the same directory as the class that's
47      * using it, a convention we use.
48      * @param baseClass the name of the class we're doing this on behalf of
49      * @param file the name of the file the gif image is stored in
50      * @param mnText is the mnemonic/text to be used for the button
51      */
setImage(Class baseClass, String file, Mnemonic mnText)52     public void setImage(Class baseClass, String file, Mnemonic mnText) {
53 	try {
54 	    InputStream resource = baseClass.getResourceAsStream(file);
55 	    if (resource != null) {
56 		BufferedInputStream in = new BufferedInputStream(resource);
57 		ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
58 		byte [] buffer = new byte[1024];
59 		int n;
60 		while ((n = in.read(buffer)) > 0) {
61 		    out.write(buffer, 0, n);
62 		}
63 		in.close();
64 		out.flush();
65 		buffer = out.toByteArray();
66 		setIcon(new ImageIcon(buffer));
67 	    }
68 	} catch (IOException ioe) {
69 	}
70 	// Added for accessibility
71 	setText(mnText.getString());
72 	setToolTipText(mnText.getString());
73 	setMnemonic(mnText.getMnemonic());
74     }
75 }
76