Add Source Delivery awareness to Order page

app/code/Magento/InventorySales/Block/Adminhtml/Order/View/Tab/Sources.php

@@ -0,0 +1,138 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\InventorySales\Block\Adminhtml\Order\View\Tab;
+
+use Magento\Backend\Block\Template;
+use Magento\Backend\Block\Template\Context;
+use Magento\Backend\Block\Widget\Tab\TabInterface;
+use Magento\Framework\Api\SearchCriteriaBuilder;
+use Magento\Framework\Registry;
+use Magento\InventoryApi\Api\Data\SourceItemInterface;
+use Magento\InventoryApi\Api\SourceItemRepositoryInterface;
+use Magento\InventoryApi\Api\SourceRepositoryInterface;
+
+/**
+ * Tab for source items display on the order editing page
+ *
+ * @api
+ */
+class Sources extends Template implements TabInterface
+{
+    /**
+     * @var Registry
+     */
+    private $registry;
+
+    /**
+     * @var SearchCriteriaBuilder
+     */
+    private $searchCriteriaBuilder;
+
+    /**
+     * @var SourceItemRepositoryInterface
+     */
+    private $sourceItemRepository;
+
+    /**
+     * @var SourceRepositoryInterface
+     */
+    private $sourceRepository;
+
+    /**
+     * @param Context $context
+     * @param Registry $registry
+     * @param SearchCriteriaBuilder $searchCriteriaBuilder
+     * @param SourceItemRepositoryInterface $sourceItemRepository
+     * @param SourceRepositoryInterface $sourceRepository
+     * @param array $data
+     */
+    public function __construct(
+        Context $context,
+        Registry $registry,
+        SearchCriteriaBuilder $searchCriteriaBuilder,
+        SourceItemRepositoryInterface $sourceItemRepository,
+        SourceRepositoryInterface $sourceRepository,
+        array $data = []
+    ) {
+        parent::__construct($context, $data);
+        $this->registry = $registry;
+        $this->searchCriteriaBuilder = $searchCriteriaBuilder;
+        $this->sourceItemRepository = $sourceItemRepository;
+        $this->sourceRepository = $sourceRepository;
+    }
+
+    /**
+     * Getting source items for order
+     *
+     * @return array
+     */
+    public function getSourceItemsData()
+    {
+        $order = $this->registry->registry('current_order');
+
+        $sourceItemsData = [];
+        foreach ($order->getAllVisibleItems() as $orderItem) {
+            $sourceItems = $this->getSourceItemsBySku($orderItem->getSku());
+
+            foreach ($sourceItems as $sourceItem) {
+                $sourceName = $this->sourceRepository->get((int)$sourceItem->getSourceId())->getName();
+                $sourceItemsData[$sourceName][] = [
+                    'sku' => $sourceItem->getSku(),
+                    'qty' => $sourceItem->getQuantity(),
+                ];
+            }
+        }
+        return $sourceItemsData;
+    }
+
+    /**
+     * @param string $sku
+     * @return SourceItemInterface[]
+     */
+    private function getSourceItemsBySku(string $sku): array
+    {
+        $searchCriteria = $this->searchCriteriaBuilder
+            ->addFilter(SourceItemInterface::SKU, $sku)
+            ->create();
+
+        $sourceItemSearchResult = $this->sourceItemRepository->getList($searchCriteria);
+        return $sourceItemSearchResult->getItems();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getTabLabel()
+    {
+        return __('Source Delivery');
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getTabTitle()
+    {
+        return __('Source Delivery');
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function canShowTab()
+    {
+        return true;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function isHidden()
+    {
+        return false;
+    }
+}

app/code/Magento/InventorySales/view/adminhtml/layout/sales_order_view.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="admin-2columns-left" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
+    <body>
+        <referenceBlock name="sales_order_tabs">
+            <block class="Magento\InventorySales\Block\Adminhtml\Order\View\Tab\Sources" name="order_tab_sources" template="Magento_InventorySales::order/view/tab/sources.phtml"/>
+            <action method="addTab">
+                <argument name="name" xsi:type="string">order_sources</argument>
+                <argument name="block" xsi:type="string">order_tab_sources</argument>
+            </action>
+        </referenceBlock>
+    </body>
+</page>

app/code/Magento/InventorySales/view/adminhtml/templates/order/view/tab/sources.phtml

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+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+// @codingStandardsIgnoreFile
+
+/** @var \Magento\InventorySales\Block\Adminhtml\Order\View\Tab\Sources $block */
+?>
+<?php foreach ($block->getSourceItemsData() as $sourceName => $sourceItems): ?>
+    <table class="data-table admin__table-primary edit-order-table">
+        <div class="admin__page-section-item-title">
+            <span class="title"><?= $block->escapeHtml($sourceName) ?></span>
+        </div>
+        <thead>
+            <tr class="headings">
+                <th><span><?= $block->escapeHtml(__('Sku')) ?></span></th>
+                <th><span><?= $block->escapeHtml(__('Qty')) ?></span></th>
+            </tr>
+        </thead>
+        <?php foreach ($sourceItems as $sourceItem): ?>
+            <tr>
+                <td><?= $block->escapeHtml($sourceItem['sku']) ?></td>
+                <td><?= $block->escapeHtml($sourceItem['qty']) ?></td>
+            </tr>
+        <?php endforeach; ?>
+    </table>
+<?php endforeach; ?>