/*
* $Id: PdfLayerMembership.java 4242 2010-01-02 23:22:20Z xlv $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2011 1T3XT BVBA
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
* 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.error_messages.MessageLocalization;
/**
* An array specifying a visibility expression, used to compute visibility
* of content based on a set of optional content groups.
* @since 5.0.2
*/
public class PdfVisibilityExpression extends PdfArray {
/** A boolean operator. */
public static final int OR = 0;
/** A boolean operator. */
public static final int AND = 1;
/** A boolean operator. */
public static final int NOT = -1;
/**
* Creates a visibility expression.
* @param type should be AND, OR, or NOT
*/
public PdfVisibilityExpression(int type) {
super();
switch(type) {
case OR:
super.add(PdfName.OR);
break;
case AND:
super.add(PdfName.AND);
break;
case NOT:
super.add(PdfName.NOT);
break;
default:
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value"));
}
}
/**
* @see com.itextpdf.text.pdf.PdfArray#add(int, com.itextpdf.text.pdf.PdfObject)
*/
@Override
public void add(int index, PdfObject element) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value"));
}
/**
* @see com.itextpdf.text.pdf.PdfArray#add(com.itextpdf.text.pdf.PdfObject)
*/
@Override
public boolean add(PdfObject object) {
if (object instanceof PdfLayer)
return super.add(((PdfLayer)object).getRef());
if (object instanceof PdfVisibilityExpression)
return super.add(object);
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value"));
}
/**
* @see com.itextpdf.text.pdf.PdfArray#addFirst(com.itextpdf.text.pdf.PdfObject)
*/
@Override
public void addFirst(PdfObject object) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value"));
}
/**
* @see com.itextpdf.text.pdf.PdfArray#add(float[])
*/
@Override
public boolean add(float[] values) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value"));
}
/**
* @see com.itextpdf.text.pdf.PdfArray#add(int[])
*/
@Override
public boolean add(int[] values) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("illegal.ve.value"));
}
}
|