org.jpedal.examples.viewer.commands.PageGrouping Maven / Gradle / Ivy
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* PageGrouping.java
* ---------------
*/
package org.jpedal.examples.viewer.commands;
import org.jpedal.PdfDecoderInt;
import org.jpedal.exception.PdfException;
/**
* Group Pages in Viewer
*/
public class PageGrouping {
public static Object execute(final Object[] args, final PdfDecoderInt decode_pdf) {
Object status = null;
if (args != null) {
final int i = (Integer) args[0];
if (i == decode_pdf.getlastPageDecoded()) {
try {
status = decode_pdf.getGroupingObject();
} catch (final PdfException e) {
e.printStackTrace();
}
} else {
try {
decode_pdf.decodePageInBackground(i);
status = decode_pdf.getBackgroundGroupingObject();
} catch (final Exception e) {
e.printStackTrace();
}
}
//ensure done
decode_pdf.waitForDecodingToFinish();
}
return status;
}
}