<?php

namespace PhpOffice\PhpSpreadsheet\Shared\Escher;

use PhpOffice\PhpSpreadsheet\Exception as SpreadsheetException;
use PhpOffice\PhpSpreadsheet\Shared\Escher\DgContainer\SpgrContainer;

class DgContainer
{
    /**
     * Drawing index, 1-based.
     */
    private ?int $dgId = null;

    /**
     * Last shape index in this drawing.
     */
    private ?int $lastSpId = null;

    private ?SpgrContainer $spgrContainer = null;

    public function getDgId(): ?int
    {
        return $this->dgId;
    }

    public function setDgId(int $value): void
    {
        $this->dgId = $value;
    }

    public function getLastSpId(): ?int
    {
        return $this->lastSpId;
    }

    public function setLastSpId(int $value): void
    {
        $this->lastSpId = $value;
    }

    public function getSpgrContainer(): ?SpgrContainer
    {
        return $this->spgrContainer;
    }

    public function getSpgrContainerOrThrow(): SpgrContainer
    {
        if ($this->spgrContainer !== null) {
            return $this->spgrContainer;
        }

        throw new SpreadsheetException('spgrContainer is unexpectedly null');
    }

    public function setSpgrContainer(SpgrContainer $spgrContainer): SpgrContainer
    {
        return $this->spgrContainer = $spgrContainer;
    }
}