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 
  26 package javax.print.event;
  27 
  28 import javax.print.PrintService;
  29 import javax.print.attribute.AttributeSetUtilities;
  30 import 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  */
  37 public 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 }