CellIterator.php
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<?php
/**
* PHPExcel_Worksheet_CellIterator
*
* Copyright (c) 2006 - 2015 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_Worksheet
* @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version ##VERSION##, ##DATE##
*/
abstract class PHPExcel_Worksheet_CellIterator
{
/**
* PHPExcel_Worksheet to iterate
*
* @var PHPExcel_Worksheet
*/
protected $subject;
/**
* Current iterator position
*
* @var mixed
*/
protected $position = null;
/**
* Iterate only existing cells
*
* @var boolean
*/
protected $onlyExistingCells = false;
/**
* Destructor
*/
public function __destruct()
{
unset($this->subject);
}
/**
* Get loop only existing cells
*
* @return boolean
*/
public function getIterateOnlyExistingCells()
{
return $this->onlyExistingCells;
}
/**
* Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary
*
* @throws PHPExcel_Exception
*/
abstract protected function adjustForExistingOnlyRange();
/**
* Set the iterator to loop only existing cells
*
* @param boolean $value
* @throws PHPExcel_Exception
*/
public function setIterateOnlyExistingCells($value = true)
{
$this->onlyExistingCells = (boolean) $value;
$this->adjustForExistingOnlyRange();
}
}