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<?php namespace PhpOffice\PhpSpreadsheet\Worksheet; use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException; /** * Copyright (c) 2006 - 2016 PhpSpreadsheet. * * 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 PhpSpreadsheet * * @copyright Copyright (c) 2006 - 2016 PhpSpreadsheet (https://github.com/PHPOffice/PhpSpreadsheet) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL */ abstract class CellIterator { /** * Worksheet to iterate. * * @var \PhpOffice\PhpSpreadsheet\Worksheet */ protected $subject; /** * Current iterator position. * * @var mixed */ protected $position = null; /** * Iterate only existing cells. * * @var bool */ protected $onlyExistingCells = false; /** * Destructor. */ public function __destruct() { unset($this->subject); } /** * Get loop only existing cells. * * @return bool */ public function getIterateOnlyExistingCells() { return $this->onlyExistingCells; } /** * Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary. * * @throws PhpSpreadsheetException */ abstract protected function adjustForExistingOnlyRange(); /** * Set the iterator to loop only existing cells. * * @param bool $value * * @throws PhpSpreadsheetException */ public function setIterateOnlyExistingCells($value) { $this->onlyExistingCells = (bool) $value; $this->adjustForExistingOnlyRange(); } }
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