source: sourcecode/application/libraries/PHPExcel/Writer/Excel2007/WriterPart.php @ 1

<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2014 PHPExcel
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Writer_Excel2007
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    1.8.0, 2014-03-02
 */


/**
 * PHPExcel_Writer_Excel2007_WriterPart
 *
 * @category   PHPExcel
 * @package    PHPExcel_Writer_Excel2007
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
abstract class PHPExcel_Writer_Excel2007_WriterPart
{
        /**
         * Parent IWriter object
         *
         * @var PHPExcel_Writer_IWriter
         */
        private $_parentWriter;

        /**
         * Set parent IWriter object
         *
         * @param PHPExcel_Writer_IWriter       $pWriter
         * @throws PHPExcel_Writer_Exception
         */
        public function setParentWriter(PHPExcel_Writer_IWriter $pWriter = null) {
                $this->_parentWriter = $pWriter;
        }

        /**
         * Get parent IWriter object
         *
         * @return PHPExcel_Writer_IWriter
         * @throws PHPExcel_Writer_Exception
         */
        public function getParentWriter() {
                if (!is_null($this->_parentWriter)) {
                        return $this->_parentWriter;
                } else {
                        throw new PHPExcel_Writer_Exception("No parent PHPExcel_Writer_IWriter assigned.");
                }
        }

        /**
         * Set parent IWriter object
         *
         * @param PHPExcel_Writer_IWriter       $pWriter
         * @throws PHPExcel_Writer_Exception
         */
        public function __construct(PHPExcel_Writer_IWriter $pWriter = null) {
                if (!is_null($pWriter)) {
                        $this->_parentWriter = $pWriter;
                }
        }

}