/* * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */  package javax.print.attribute; /** * Interface DocAttributeSet specifies the interface for a set of doc * attributes, i.e. printing attributes that implement interface {@link * DocAttribute DocAttribute}. In the Print Service API, the client uses a * DocAttributeSet to specify the characteristics of an individual doc and * the print job settings to be applied to an individual doc. * <P> * A DocAttributeSet is just an {@link AttributeSet AttributeSet} whose * constructors and mutating operations guarantee an additional invariant, * namely that all attribute values in the DocAttributeSet must be instances * of interface {@link DocAttribute DocAttribute}. * The {@link #add(Attribute) <CODE>add(Attribute)</CODE>}, and * {@link #addAll(AttributeSet) <CODE>addAll(AttributeSet)</CODE>} operations * are respecified below to guarantee this additional invariant. * <P> * * @author  Alan Kaminsky */public interface DocAttributeSet extends AttributeSet {      /**     * Adds the specified attribute value to this attribute set if it is not     * already present, first removing any existing value in the same     * attribute category as the specified attribute value (optional     * operation).     *     * @param  attribute  Attribute value to be added to this attribute set.     *     * @return  <tt>true</tt> if this attribute set changed as a result of     *          the call, i.e., the given attribute value was not already a     *          member of this attribute set.     *     * @throws  UnmodifiableSetException     *     (unchecked exception) Thrown if this attribute set does not     *     support the <CODE>add()</CODE> operation.     * @throws  ClassCastException     *     (unchecked exception) Thrown if the <CODE>attribute</CODE> is     *     not an instance of interface     *     {@link DocAttribute DocAttribute}.     * @throws  NullPointerException     *    (unchecked exception) Thrown if the <CODE>attribute</CODE> is null.     */    public boolean add(Attribute attribute);     /**     * Adds all of the elements in the specified set to this attribute.     * The outcome is  the same as if the     * {@link #add(Attribute) <CODE>add(Attribute)</CODE>}     * operation had been applied to this attribute set successively with     * each element from the specified set. If none of the categories in the     * specified set  are the same as any categories in this attribute set,     * the <tt>addAll()</tt> operation effectively modifies this attribute     * set so that its value is the <i>union</i> of the two sets.     * <P>     * The behavior of the <CODE>addAll()</CODE> operation is unspecified if     * the specified set is modified while the operation is in progress.     * <P>     * If the <CODE>addAll()</CODE> operation throws an exception, the effect     * on this attribute set's state is implementation dependent; elements     * from the specified set before the point of the exception may or     * may not have been added to this attribute set.     *     * @param  attributes  whose elements are to be added to this attribute     *            set.     *     * @return  <tt>true</tt> if this attribute set changed as a result of     *          the call.     *     * @throws  UnmodifiableSetException     *     (Unchecked exception) Thrown if this attribute set does not     *     support the <tt>addAll()</tt> method.     * @throws  ClassCastException     *     (Unchecked exception) Thrown if some element in the specified     *     set is not an instance of interface {@link DocAttribute     *     DocAttribute}.     * @throws  NullPointerException     *     (Unchecked exception) Thrown if the specified  set is null.     *     * @see #add(Attribute)     */   public boolean addAll(AttributeSet attributes);}