1 /* 2 * Copyright (c) 2000, 2014, 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 package javax.print.attribute.standard; 26 27 import java.util.Collection; 28 import java.util.HashSet; 29 30 import javax.print.attribute.Attribute; 31 import javax.print.attribute.PrintJobAttribute; 32 33 /** 34 * Class JobStateReasons is a printing attribute class, a set of enumeration 35 * values, that provides additional information about the job's current state, 36 * i.e., information that augments the value of the job's {@link JobState 37 * JobState} attribute. 38 * <P> 39 * Instances of {@link JobStateReason JobStateReason} do not appear in a Print 40 * Job's attribute set directly. Rather, a JobStateReasons attribute appears in 41 * the Print Job's attribute set. The JobStateReasons attribute contains zero, 42 * one, or more than one {@link JobStateReason JobStateReason} objects which 43 * pertain to the Print Job's status. The printer adds a {@link JobStateReason 44 * JobStateReason} object to the Print Job's JobStateReasons attribute when the 45 * corresponding condition becomes true of the Print Job, and the printer 46 * removes the {@link JobStateReason JobStateReason} object again when the 47 * corresponding condition becomes false, regardless of whether the Print Job's 48 * overall {@link JobState JobState} also changed. 49 * <P> 50 * Class JobStateReasons inherits its implementation from class {@link 51 * java.util.HashSet java.util.HashSet}. Unlike most printing attributes which 52 * are immutable once constructed, class JobStateReasons is designed to be 53 * mutable; you can add {@link JobStateReason JobStateReason} objects to an 54 * existing JobStateReasons object and remove them again. However, like class 55 * {@link java.util.HashSet java.util.HashSet}, class JobStateReasons is not 56 * multiple thread safe. If a JobStateReasons object will be used by multiple 57 * threads, be sure to synchronize its operations (e.g., using a synchronized 58 * set view obtained from class {@link java.util.Collections 59 * java.util.Collections}). 60 * <P> 61 * <B>IPP Compatibility:</B> The string value returned by each individual {@link 62 * JobStateReason JobStateReason} object's <CODE>toString()</CODE> method gives 63 * the IPP keyword value. The category name returned by <CODE>getName()</CODE> 64 * gives the IPP attribute name. 65 * <P> 66 * 67 * @author Alan Kaminsky 68 */ 69 public final class JobStateReasons 70 extends HashSet<JobStateReason> implements PrintJobAttribute { 71 72 private static final long serialVersionUID = 8849088261264331812L; 73 74 /** 75 * Construct a new, empty job state reasons attribute; the underlying hash 76 * set has the default initial capacity and load factor. 77 */ 78 public JobStateReasons() { 79 super(); 80 } 81 82 /** 83 * Construct a new, empty job state reasons attribute; the underlying hash 84 * set has the given initial capacity and the default load factor. 85 * 86 * @param initialCapacity Initial capacity. 87 * @throws IllegalArgumentException if the initial capacity is less 88 * than zero. 89 */ 90 public JobStateReasons(int initialCapacity) { 91 super (initialCapacity); 92 } 93 94 /** 95 * Construct a new, empty job state reasons attribute; the underlying hash 96 * set has the given initial capacity and load factor. 97 * 98 * @param initialCapacity Initial capacity. 99 * @param loadFactor Load factor. 100 * @throws IllegalArgumentException if the initial capacity is less 101 * than zero. 102 */ 103 public JobStateReasons(int initialCapacity, float loadFactor) { 104 super (initialCapacity, loadFactor); 105 } 106 107 /** 108 * Construct a new job state reasons attribute that contains the same 109 * {@link JobStateReason JobStateReason} objects as the given collection. 110 * The underlying hash set's initial capacity and load factor are as 111 * specified in the superclass constructor {@link 112 * java.util.HashSet#HashSet(java.util.Collection) 113 * HashSet(Collection)}. 114 * 115 * @param collection Collection to copy. 116 * 117 * @exception NullPointerException 118 * (unchecked exception) Thrown if <CODE>collection</CODE> is null or 119 * if any element in <CODE>collection</CODE> is null. 120 * @throws ClassCastException 121 * (unchecked exception) Thrown if any element in 122 * <CODE>collection</CODE> is not an instance of class {@link 123 * JobStateReason JobStateReason}. 124 */ 125 public JobStateReasons(Collection<JobStateReason> collection) { 126 super (collection); 127 } 128 129 /** 130 * Adds the specified element to this job state reasons attribute if it is 131 * not already present. The element to be added must be an instance of class 132 * {@link JobStateReason JobStateReason}. If this job state reasons 133 * attribute already contains the specified element, the call leaves this 134 * job state reasons attribute unchanged and returns <tt>false</tt>. 135 * 136 * @param o Element to be added to this job state reasons attribute. 137 * 138 * @return <tt>true</tt> if this job state reasons attribute did not 139 * already contain the specified element. 140 * 141 * @throws NullPointerException 142 * (unchecked exception) Thrown if the specified element is null. 143 * @throws ClassCastException 144 * (unchecked exception) Thrown if the specified element is not an 145 * instance of class {@link JobStateReason JobStateReason}. 146 * @since 1.5 147 */ 148 public boolean add(JobStateReason o) { 149 if (o == null) { 150 throw new NullPointerException(); 151 } 152 return super.add(o); 153 } 154 155 /** 156 * Get the printing attribute class which is to be used as the "category" 157 * for this printing attribute value. 158 * <P> 159 * For class JobStateReasons, the category is class JobStateReasons itself. 160 * 161 * @return Printing attribute class (category), an instance of class 162 * {@link java.lang.Class java.lang.Class}. 163 */ 164 public final Class<? extends Attribute> getCategory() { 165 return JobStateReasons.class; 166 } 167 168 /** 169 * Get the name of the category of which this attribute value is an 170 * instance. 171 * <P> 172 * For class JobStateReasons, the category 173 * name is <CODE>"job-state-reasons"</CODE>. 174 * 175 * @return Attribute category name. 176 */ 177 public final String getName() { 178 return "job-state-reasons"; 179 } 180 181 }