Renderer.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Bundle\Block\Sales\Order\Items;

use Magento\Catalog\Model\Product\Type\AbstractType;
use Magento\Framework\Serialize\Serializer\Json;

/**
 * Order item render block
 * @api
 * @since 100.0.2
 */
class Renderer extends \Magento\Sales\Block\Order\Item\Renderer\DefaultRenderer
{
    /**
     * Serializer
     *
     * @var Json
     */
    private $serializer;

    /**
     * @param \Magento\Framework\View\Element\Template\Context $context
     * @param \Magento\Framework\Stdlib\StringUtils $string
     * @param \Magento\Catalog\Model\Product\OptionFactory $productOptionFactory
     * @param array $data
     * @param \Magento\Framework\Serialize\Serializer\Json $serializer
     */
    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Framework\Stdlib\StringUtils $string,
        \Magento\Catalog\Model\Product\OptionFactory $productOptionFactory,
        array $data = [],
        Json $serializer = null
    ) {
        $this->serializer = $serializer ?: \Magento\Framework\App\ObjectManager::getInstance()
            ->get(Json::class);

        parent::__construct($context, $string, $productOptionFactory, $data);
    }

    /**
     * @param mixed $item
     * @return bool
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     */
    public function isShipmentSeparately($item = null)
    {
        if ($item) {
            if ($item->getOrderItem()) {
                $item = $item->getOrderItem();
            }
            $parentItem = $item->getParentItem();
            if ($parentItem) {
                $options = $parentItem->getProductOptions();
                if ($options) {
                    return (isset($options['shipment_type'])
                        && $options['shipment_type'] == AbstractType::SHIPMENT_SEPARATELY);
                }
            } else {
                $options = $item->getProductOptions();
                if ($options) {
                    return !(isset($options['shipment_type'])
                        && $options['shipment_type'] == AbstractType::SHIPMENT_SEPARATELY);
                }
            }
        }

        $options = $this->getOrderItem()->getProductOptions();
        if ($options) {
            if (isset($options['shipment_type']) && $options['shipment_type'] == AbstractType::SHIPMENT_SEPARATELY) {
                return true;
            }
        }
        return false;
    }

    /**
     * @param mixed $item
     * @return bool
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     */
    public function isChildCalculated($item = null)
    {
        if ($item) {
            if ($item->getOrderItem()) {
                $item = $item->getOrderItem();
            }
            $parentItem = $item->getParentItem();
            if ($parentItem) {
                $options = $parentItem->getProductOptions();
                if ($options) {
                    return (isset($options['product_calculations'])
                        && $options['product_calculations'] == AbstractType::CALCULATE_CHILD);
                }
            } else {
                $options = $item->getProductOptions();
                if ($options) {
                    return !(isset($options['product_calculations'])
                        && $options['product_calculations'] == AbstractType::CALCULATE_CHILD);
                }
            }
        }

        $options = $this->getOrderItem()->getProductOptions();
        if ($options) {
            if (isset($options['product_calculations'])
                && $options['product_calculations'] == AbstractType::CALCULATE_CHILD
            ) {
                return true;
            }
        }
        return false;
    }

    /**
     * @param mixed $item
     * @return mixed|null
     */
    public function getSelectionAttributes($item)
    {
        if ($item instanceof \Magento\Sales\Model\Order\Item) {
            $options = $item->getProductOptions();
        } else {
            $options = $item->getOrderItem()->getProductOptions();
        }
        if (isset($options['bundle_selection_attributes'])) {
            return $this->serializer->unserialize($options['bundle_selection_attributes']);
        }
        return null;
    }

    /**
     * @param mixed $item
     * @return string
     */
    public function getValueHtml($item)
    {
        if ($attributes = $this->getSelectionAttributes($item)) {
            return sprintf('%d', $attributes['qty']) . ' x ' . $this->escapeHtml($item->getName()) . " "
                . $this->getOrder()->formatPrice($attributes['price']);
        }
        return $this->escapeHtml($item->getName());
    }

    /**
     * Getting all available children for Invoice, Shipment or CreditMemo item
     *
     * @param \Magento\Framework\DataObject $item
     * @return array
     */
    public function getChildren($item)
    {
        $itemsArray = [];

        $items = null;
        if ($item instanceof \Magento\Sales\Model\Order\Invoice\Item) {
            $items = $item->getInvoice()->getAllItems();
        } elseif ($item instanceof \Magento\Sales\Model\Order\Shipment\Item) {
            $items = $item->getShipment()->getAllItems();
        } elseif ($item instanceof \Magento\Sales\Model\Order\Creditmemo\Item) {
            $items = $item->getCreditmemo()->getAllItems();
        }

        if ($items) {
            foreach ($items as $value) {
                $parentItem = $value->getOrderItem()->getParentItem();
                if ($parentItem) {
                    $itemsArray[$parentItem->getId()][$value->getOrderItemId()] = $value;
                } else {
                    $itemsArray[$value->getOrderItem()->getId()][$value->getOrderItemId()] = $value;
                }
            }
        }

        if (isset($itemsArray[$item->getOrderItem()->getId()])) {
            return $itemsArray[$item->getOrderItem()->getId()];
        }
        return null;
    }

    /**
     * @param mixed $item
     * @return bool
     */
    public function canShowPriceInfo($item)
    {
        if ($item->getOrderItem()->getParentItem() && $this->isChildCalculated() ||
            !$item->getOrderItem()->getParentItem() && !$this->isChildCalculated()
        ) {
            return true;
        }
        return false;
    }

    /**
     * Get the html for item price
     *
     * @param OrderItem|InvoiceItem|CreditmemoItem $item
     * @return string
     */
    public function getItemPrice($item)
    {
        $block = $this->getLayout()->getBlock('item_price');
        $block->setItem($item);
        return $block->toHtml();
    }
}