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<?php
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namespace PhpOffice\PhpSpreadsheet\Worksheet;
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use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
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class SheetView
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{
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    // Sheet View types
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    const SHEETVIEW_NORMAL = 'normal';
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    const SHEETVIEW_PAGE_LAYOUT = 'pageLayout';
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    const SHEETVIEW_PAGE_BREAK_PREVIEW = 'pageBreakPreview';
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    private const SHEET_VIEW_TYPES = [
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        self::SHEETVIEW_NORMAL,
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        self::SHEETVIEW_PAGE_LAYOUT,
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        self::SHEETVIEW_PAGE_BREAK_PREVIEW,
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    ];
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    /**
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     * ZoomScale.
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     *
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     * Valid values range from 10 to 400.
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     *
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     * @var ?int
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     */
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    private $zoomScale = 100;
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    /**
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     * ZoomScaleNormal.
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     *
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     * Valid values range from 10 to 400.
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     *
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     * @var ?int
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     */
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    private $zoomScaleNormal = 100;
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    /**
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     * ShowZeros.
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     *
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     * If true, "null" values from a calculation will be shown as "0". This is the default Excel behaviour and can be changed
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     * with the advanced worksheet option "Show a zero in cells that have zero value"
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     *
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     * @var bool
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     */
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    private $showZeros = true;
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    /**
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     * View.
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     *
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     * Valid values range from 10 to 400.
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     *
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     * @var string
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     */
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    private $sheetviewType = self::SHEETVIEW_NORMAL;
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    /**
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     * Create a new SheetView.
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     */
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    public function __construct()
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    {
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    }
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    /**
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     * Get ZoomScale.
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     *
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     * @return ?int
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     */
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    public function getZoomScale()
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    {
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        return $this->zoomScale;
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    }
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    /**
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     * Set ZoomScale.
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     * Valid values range from 10 to 400.
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     *
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     * @param ?int $zoomScale
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     *
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     * @return $this
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     */
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    public function setZoomScale($zoomScale)
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    {
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        // Microsoft Office Excel 2007 only allows setting a scale between 10 and 400 via the user interface,
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        // but it is apparently still able to handle any scale >= 1
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        if ($zoomScale === null || $zoomScale >= 1) {
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            $this->zoomScale = $zoomScale;
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        } else {
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            throw new PhpSpreadsheetException('Scale must be greater than or equal to 1.');
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        }
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        return $this;
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    }
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    /**
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     * Get ZoomScaleNormal.
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     *
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     * @return ?int
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     */
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    public function getZoomScaleNormal()
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    {
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        return $this->zoomScaleNormal;
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    }
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    /**
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     * Set ZoomScale.
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     * Valid values range from 10 to 400.
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     *
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     * @param ?int $zoomScaleNormal
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     *
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     * @return $this
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     */
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    public function setZoomScaleNormal($zoomScaleNormal)
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    {
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        if ($zoomScaleNormal === null || $zoomScaleNormal >= 1) {
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            $this->zoomScaleNormal = $zoomScaleNormal;
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        } else {
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            throw new PhpSpreadsheetException('Scale must be greater than or equal to 1.');
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        }
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        return $this;
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    }
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    /**
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     * Set ShowZeroes setting.
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     *
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     * @param bool $showZeros
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     */
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    public function setShowZeros($showZeros): void
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    {
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        $this->showZeros = $showZeros;
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    }
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    /**
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     * @return bool
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     */
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    public function getShowZeros()
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    {
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        return $this->showZeros;
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    }
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    /**
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     * Get View.
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     *
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     * @return string
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     */
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    public function getView()
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    {
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        return $this->sheetviewType;
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    }
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    /**
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     * Set View.
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     *
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     * Valid values are
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     *        'normal'            self::SHEETVIEW_NORMAL
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     *        'pageLayout'        self::SHEETVIEW_PAGE_LAYOUT
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     *        'pageBreakPreview'  self::SHEETVIEW_PAGE_BREAK_PREVIEW
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     *
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     * @param ?string $sheetViewType
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     *
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     * @return $this
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     */
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    public function setView($sheetViewType)
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    {
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        // MS Excel 2007 allows setting the view to 'normal', 'pageLayout' or 'pageBreakPreview' via the user interface
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        if ($sheetViewType === null) {
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            $sheetViewType = self::SHEETVIEW_NORMAL;
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        }
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        if (in_array($sheetViewType, self::SHEET_VIEW_TYPES)) {
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            $this->sheetviewType = $sheetViewType;
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        } else {
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            throw new PhpSpreadsheetException('Invalid sheetview layout type.');
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        }
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        return $this;
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    }
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}