EVOLUTION-NINJA

Edit File: TrendLine.php

<?php

namespace PhpOffice\PhpSpreadsheet\Chart;

class TrendLine extends Properties
{
    const TRENDLINE_EXPONENTIAL = 'exp';
    const TRENDLINE_LINEAR = 'linear';
    const TRENDLINE_LOGARITHMIC = 'log';
    const TRENDLINE_POLYNOMIAL = 'poly'; // + 'order'
    const TRENDLINE_POWER = 'power';
    const TRENDLINE_MOVING_AVG = 'movingAvg'; // + 'period'
    const TRENDLINE_TYPES = [
        self::TRENDLINE_EXPONENTIAL,
        self::TRENDLINE_LINEAR,
        self::TRENDLINE_LOGARITHMIC,
        self::TRENDLINE_POLYNOMIAL,
        self::TRENDLINE_POWER,
        self::TRENDLINE_MOVING_AVG,
    ];

/** @var string */
    private $trendLineType = 'linear'; // TRENDLINE_LINEAR

/** @var int */
    private $order = 2;

/** @var int */
    private $period = 3;

/** @var bool */
    private $dispRSqr = false;

/** @var bool */
    private $dispEq = false;

/** @var string */
    private $name = '';

/** @var float */
    private $backward = 0.0;

/** @var float */
    private $forward = 0.0;

/** @var float */
    private $intercept = 0.0;

/**
     * Create a new TrendLine object.
     */
    public function __construct(
        string $trendLineType = '',
        ?int $order = null,
        ?int $period = null,
        bool $dispRSqr = false,
        bool $dispEq = false,
        ?float $backward = null,
        ?float $forward = null,
        ?float $intercept = null,
        ?string $name = null
    ) {
        parent::__construct();
        $this->setTrendLineProperties(
            $trendLineType,
            $order,
            $period,
            $dispRSqr,
            $dispEq,
            $backward,
            $forward,
            $intercept,
            $name
        );
    }

public function getTrendLineType(): string
    {
        return $this->trendLineType;
    }

public function setTrendLineType(string $trendLineType): self
    {
        $this->trendLineType = $trendLineType;

return $this;
    }

public function getOrder(): int
    {
        return $this->order;
    }

public function setOrder(int $order): self
    {
        $this->order = $order;

return $this;
    }

public function getPeriod(): int
    {
        return $this->period;
    }

public function setPeriod(int $period): self
    {
        $this->period = $period;

return $this;
    }

public function getDispRSqr(): bool
    {
        return $this->dispRSqr;
    }

public function setDispRSqr(bool $dispRSqr): self
    {
        $this->dispRSqr = $dispRSqr;

return $this;
    }

public function getDispEq(): bool
    {
        return $this->dispEq;
    }

public function setDispEq(bool $dispEq): self
    {
        $this->dispEq = $dispEq;

return $this;
    }

public function getName(): string
    {
        return $this->name;
    }

public function setName(string $name): self
    {
        $this->name = $name;

return $this;
    }

public function getBackward(): float
    {
        return $this->backward;
    }

public function setBackward(float $backward): self
    {
        $this->backward = $backward;

return $this;
    }

public function getForward(): float
    {
        return $this->forward;
    }

public function setForward(float $forward): self
    {
        $this->forward = $forward;

return $this;
    }

public function getIntercept(): float
    {
        return $this->intercept;
    }

public function setIntercept(float $intercept): self
    {
        $this->intercept = $intercept;

return $this;
    }

public function setTrendLineProperties(
        ?string $trendLineType = null,
        ?int $order = 0,
        ?int $period = 0,
        ?bool $dispRSqr = false,
        ?bool $dispEq = false,
        ?float $backward = null,
        ?float $forward = null,
        ?float $intercept = null,
        ?string $name = null
    ): self {
        if (!empty($trendLineType)) {
            $this->setTrendLineType($trendLineType);
        }
        if ($order !== null) {
            $this->setOrder($order);
        }
        if ($period !== null) {
            $this->setPeriod($period);
        }
        if ($dispRSqr !== null) {
            $this->setDispRSqr($dispRSqr);
        }
        if ($dispEq !== null) {
            $this->setDispEq($dispEq);
        }
        if ($backward !== null) {
            $this->setBackward($backward);
        }
        if ($forward !== null) {
            $this->setForward($forward);
        }
        if ($intercept !== null) {
            $this->setIntercept($intercept);
        }
        if ($name !== null) {
            $this->setName($name);
        }

return $this;
    }
}