001/* 002 * $Id: PdfLayerMembership.java 4242 2010-01-02 23:22:20Z xlv $ 003 * 004 * This file is part of the iText (R) project. 005 * Copyright (c) 1998-2011 1T3XT BVBA 006 * Authors: Bruno Lowagie, Paulo Soares, et al. 007 * 008 * This program is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Affero General Public License version 3 010 * as published by the Free Software Foundation with the addition of the 011 * following permission added to Section 15 as permitted in Section 7(a): 012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. 014 * 015 * This program is distributed in the hope that it will be useful, but 016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 017 * or FITNESS FOR A PARTICULAR PURPOSE. 018 * See the GNU Affero General Public License for more details. 019 * You should have received a copy of the GNU Affero General Public License 020 * along with this program; if not, see http://www.gnu.org/licenses or write to 021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 022 * Boston, MA, 02110-1301 USA, or download the license from the following URL: 023 * http://itextpdf.com/terms-of-use/ 024 * 025 * The interactive user interfaces in modified source and object code versions 026 * of this program must display Appropriate Legal Notices, as required under 027 * Section 5 of the GNU Affero General Public License. 028 * 029 * In accordance with Section 7(b) of the GNU Affero General Public License, 030 * a covered work must retain the producer line in every PDF that is created 031 * or manipulated using iText. 032 * 033 * You can be released from the requirements of the license by purchasing 034 * a commercial license. Buying such a license is mandatory as soon as you 035 * develop commercial activities involving the iText software without 036 * disclosing the source code of your own applications. 037 * These activities include: offering paid services to customers as an ASP, 038 * serving PDFs on the fly in a web application, shipping iText with a closed 039 * source product. 040 * 041 * For more information, please contact iText Software Corp. at this 042 * address: sales@itextpdf.com 043 */ 044package com.itextpdf.text.pdf; 045 046import com.itextpdf.text.error_messages.MessageLocalization; 047 048/** 049 * An array specifying a visibility expression, used to compute visibility 050 * of content based on a set of optional content groups. 051 * @since 5.0.2 052 */ 053public class PdfVisibilityExpression extends PdfArray { 054 055 /** A boolean operator. */ 056 public static final int OR = 0; 057 /** A boolean operator. */ 058 public static final int AND = 1; 059 /** A boolean operator. */ 060 public static final int NOT = -1; 061 062 /** 063 * Creates a visibility expression. 064 * @param type should be AND, OR, or NOT 065 */ 066 public PdfVisibilityExpression(int type) { 067 super(); 068 switch(type) { 069 case OR: 070 super.add(PdfName.OR); 071 break; 072 case AND: 073 super.add(PdfName.AND); 074 break; 075 case NOT: 076 super.add(PdfName.NOT); 077 break; 078 default: 079 throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value")); 080 } 081 } 082 083 /** 084 * @see com.itextpdf.text.pdf.PdfArray#add(int, com.itextpdf.text.pdf.PdfObject) 085 */ 086 @Override 087 public void add(int index, PdfObject element) { 088 throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value")); 089 } 090 091 /** 092 * @see com.itextpdf.text.pdf.PdfArray#add(com.itextpdf.text.pdf.PdfObject) 093 */ 094 @Override 095 public boolean add(PdfObject object) { 096 if (object instanceof PdfLayer) 097 return super.add(((PdfLayer)object).getRef()); 098 if (object instanceof PdfVisibilityExpression) 099 return super.add(object); 100 throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value")); 101 } 102 103 /** 104 * @see com.itextpdf.text.pdf.PdfArray#addFirst(com.itextpdf.text.pdf.PdfObject) 105 */ 106 @Override 107 public void addFirst(PdfObject object) { 108 throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value")); 109 } 110 111 /** 112 * @see com.itextpdf.text.pdf.PdfArray#add(float[]) 113 */ 114 @Override 115 public boolean add(float[] values) { 116 throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value")); 117 } 118 119 /** 120 * @see com.itextpdf.text.pdf.PdfArray#add(int[]) 121 */ 122 @Override 123 public boolean add(int[] values) { 124 throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value")); 125 } 126 127}