edm/PhpOffice/PhpSpreadsheet/Writer/BaseWriter.php

<?php

namespace PhpOffice\PhpSpreadsheet\Writer;

abstract class BaseWriter implements IWriter
{
    /**
     * Write charts that are defined in the workbook?
     * Identifies whether the Writer should write definitions for any charts that exist in the PhpSpreadsheet object;.
     *
     * @var bool
     */
    protected $includeCharts = false;

    /**
     * Pre-calculate formulas
     * Forces PhpSpreadsheet to recalculate all formulae in a workbook when saving, so that the pre-calculated values are
     * immediately available to MS Excel or other office spreadsheet viewer when opening the file.
     *
     * @var bool
     */
    protected $preCalculateFormulas = true;

    /**
     * Use disk caching where possible?
     *
     * @var bool
     */
    private $useDiskCaching = false;

    /**
     * Disk caching directory.
     *
     * @var string
     */
    private $diskCachingDirectory = './';

    /**
     * Write charts in workbook?
     *        If this is true, then the Writer will write definitions for any charts that exist in the PhpSpreadsheet object.
     *        If false (the default) it will ignore any charts defined in the PhpSpreadsheet object.
     *
     * @return bool
     */
    public function getIncludeCharts()
    {
        return $this->includeCharts;
    }

    /**
     * Set write charts in workbook
     *        Set to true, to advise the Writer to include any charts that exist in the PhpSpreadsheet object.
     *        Set to false (the default) to ignore charts.
     *
     * @param bool $pValue
     *
     * @return IWriter
     */
    public function setIncludeCharts($pValue)
    {
        $this->includeCharts = (bool) $pValue;

        return $this;
    }

    /**
     * Get Pre-Calculate Formulas flag
     *     If this is true (the default), then the writer will recalculate all formulae in a workbook when saving,
     *        so that the pre-calculated values are immediately available to MS Excel or other office spreadsheet
     *        viewer when opening the file
     *     If false, then formulae are not calculated on save. This is faster for saving in PhpSpreadsheet, but slower
     *        when opening the resulting file in MS Excel, because Excel has to recalculate the formulae itself.
     *
     * @return bool
     */
    public function getPreCalculateFormulas()
    {
        return $this->preCalculateFormulas;
    }

    /**
     * Set Pre-Calculate Formulas
     *        Set to true (the default) to advise the Writer to calculate all formulae on save
     *        Set to false to prevent precalculation of formulae on save.
     *
     * @param bool $pValue Pre-Calculate Formulas?
     *
     * @return IWriter
     */
    public function setPreCalculateFormulas($pValue)
    {
        $this->preCalculateFormulas = (bool) $pValue;

        return $this;
    }

    /**
     * Get use disk caching where possible?
     *
     * @return bool
     */
    public function getUseDiskCaching()
    {
        return $this->useDiskCaching;
    }

    /**
     * Set use disk caching where possible?
     *
     * @param bool $pValue
     * @param string $pDirectory Disk caching directory
     *
     * @throws Exception when directory does not exist
     *
     * @return IWriter
     */
    public function setUseDiskCaching($pValue, $pDirectory = null)
    {
        $this->useDiskCaching = $pValue;

        if ($pDirectory !== null) {
            if (is_dir($pDirectory)) {
                $this->diskCachingDirectory = $pDirectory;
            } else {
                throw new Exception("Directory does not exist: $pDirectory");
            }
        }

        return $this;
    }

    /**
     * Get disk caching directory.
     *
     * @return string
     */
    public function getDiskCachingDirectory()
    {
        return $this->diskCachingDirectory;
    }
}