<?php
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namespace PhpOffice\PhpSpreadsheet\Worksheet;
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use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
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abstract class CellIterator implements \Iterator
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{
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/**
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* Worksheet to iterate.
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*
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* @var Worksheet
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*/
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protected $worksheet;
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/**
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* Iterate only existing cells.
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*
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* @var bool
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*/
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protected $onlyExistingCells = false;
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/**
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* Destructor.
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*/
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public function __destruct()
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{
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unset($this->worksheet);
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}
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/**
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* Get loop only existing cells.
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*
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* @return bool
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*/
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public function getIterateOnlyExistingCells()
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{
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return $this->onlyExistingCells;
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}
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/**
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* Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary.
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*
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* @throws PhpSpreadsheetException
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*/
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abstract protected function adjustForExistingOnlyRange();
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/**
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* Set the iterator to loop only existing cells.
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*
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* @param bool $value
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*
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* @throws PhpSpreadsheetException
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*/
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public function setIterateOnlyExistingCells($value)
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{
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$this->onlyExistingCells = (bool) $value;
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$this->adjustForExistingOnlyRange();
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}
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}
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