<?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;

		}

	}



}

