1/*
2 * Copyright (c) 2000, 2017, 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
26package javax.print.event;
27
28import javax.print.PrintService;
29import javax.print.attribute.AttributeSetUtilities;
30import javax.print.attribute.PrintServiceAttributeSet;
31
32/**
33 * Class {@code PrintServiceAttributeEvent} encapsulates an event a Print
34 * Service instance reports to let the client know of changes in the print
35 * service state.
36 */
37public class PrintServiceAttributeEvent extends PrintEvent {
38
39    /**
40     * Use serialVersionUID from JDK 1.4 for interoperability.
41     */
42    private static final long serialVersionUID = -7565987018140326600L;
43
44    /**
45     * The printing service attributes that changed.
46     */
47    private PrintServiceAttributeSet attributes;
48
49    /**
50     * Constructs a {@code PrintServiceAttributeEvent} object.
51     *
52     * @param  source the print job generating this event
53     * @param  attributes the attribute changes being reported
54     * @throws IllegalArgumentException if {@code source} is {@code null}
55     */
56    public PrintServiceAttributeEvent(PrintService source,
57                                      PrintServiceAttributeSet attributes) {
58
59        super(source);
60        this.attributes = AttributeSetUtilities.unmodifiableView(attributes);
61    }
62
63    /**
64     * Returns the print service.
65     *
66     * @return {@code PrintService} object
67     */
68    public PrintService getPrintService() {
69
70        return (PrintService) getSource();
71    }
72
73    /**
74     * Determine the printing service attributes that changed and their new
75     * values.
76     *
77     * @return attributes containing the new values for the service attributes
78     *         that changed. The returned set may be unmodifiable.
79     */
80    public PrintServiceAttributeSet getAttributes() {
81
82        return attributes;
83    }
84}
85