ENGCOM-3611: Set view models as shareable by default #18541

 - Merge Pull Request #18541 from thomas-kl1/magento2:patch/layout-block-argument-shareable
 - Merged commits:
   1. 9a7f3e6
   2. 415288f
   3. 32f2813
   4. 02d475c
   5. 3959725

app/code/Magento/Sales/Block/Adminhtml/Order/Create/Search/Grid.php

@@ -5,12 +5,17 @@
  */
 namespace Magento\Sales\Block\Adminhtml\Order\Create\Search;
 
+use Magento\Sales\Block\Adminhtml\Order\Create\Search\Grid\DataProvider\ProductCollection
+    as ProductCollectionDataProvider;
+use Magento\Framework\App\ObjectManager;
+
 /**
  * Adminhtml sales order create search products block
  *
  * @api
  * @author      Magento Core Team <core@magentocommerce.com>
  * @since 100.0.2
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class Grid extends \Magento\Backend\Block\Widget\Grid\Extended
 {
@@ -42,6 +47,11 @@ class Grid extends \Magento\Backend\Block\Widget\Grid\Extended
      */
     protected $_productFactory;
 
+    /**
+     * @var ProductCollectionDataProvider $productCollectionProvider
+     */
+    private $productCollectionProvider;
+
     /**
      * @param \Magento\Backend\Block\Template\Context $context
      * @param \Magento\Backend\Helper\Data $backendHelper
@@ -50,6 +60,7 @@ class Grid extends \Magento\Backend\Block\Widget\Grid\Extended
      * @param \Magento\Backend\Model\Session\Quote $sessionQuote
      * @param \Magento\Sales\Model\Config $salesConfig
      * @param array $data
+     * @param ProductCollectionDataProvider|null $productCollectionProvider
      */
     public function __construct(
         \Magento\Backend\Block\Template\Context $context,
@@ -58,12 +69,15 @@ public function __construct(
         \Magento\Catalog\Model\Config $catalogConfig,
         \Magento\Backend\Model\Session\Quote $sessionQuote,
         \Magento\Sales\Model\Config $salesConfig,
-        array $data = []
+        array $data = [],
+        ProductCollectionDataProvider $productCollectionProvider = null
     ) {
         $this->_productFactory = $productFactory;
         $this->_catalogConfig = $catalogConfig;
         $this->_sessionQuote = $sessionQuote;
         $this->_salesConfig = $salesConfig;
+        $this->productCollectionProvider = $productCollectionProvider
+            ?: ObjectManager::getInstance()->get(ProductCollectionDataProvider::class);
         parent::__construct($context, $backendHelper, $data);
     }
 
@@ -140,20 +154,18 @@ protected function _addColumnFilterToCollection($column)
      */
     protected function _prepareCollection()
     {
+
         $attributes = $this->_catalogConfig->getProductAttributes();
+        $store = $this->getStore();
+
         /* @var $collection \Magento\Catalog\Model\ResourceModel\Product\Collection */
-        $collection = $this->_productFactory->create()->getCollection();
-        $collection->setStore(
-            $this->getStore()
-        )->addAttributeToSelect(
+        $collection = $this->productCollectionProvider->getCollectionForStore($store);
+        $collection->addAttributeToSelect(
             $attributes
-        )->addAttributeToSelect(
-            'sku'
-        )->addStoreFilter()->addAttributeToFilter(
+        );
+        $collection->addAttributeToFilter(
             'type_id',
             $this->_salesConfig->getAvailableProductTypes()
-        )->addAttributeToSelect(
-            'gift_message_available'
         );
 
         $this->setCollection($collection);

app/code/Magento/Sales/Block/Adminhtml/Order/Create/Search/Grid/DataProvider/ProductCollection.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Sales\Block\Adminhtml\Order\Create\Search\Grid\DataProvider;
+
+use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory as ProductCollectionFactory;
+use Magento\Catalog\Model\ResourceModel\Product\Collection;
+use Magento\Store\Model\Store;
+
+/**
+ * Prepares product collection for the grid
+ */
+class ProductCollection
+{
+    /**
+     * @var ProductCollectionFactory
+     */
+    private $collectionFactory;
+
+    /**
+     * @param ProductCollectionFactory $collectionFactory
+     */
+    public function __construct(
+        ProductCollectionFactory $collectionFactory
+    ) {
+        $this->collectionFactory = $collectionFactory;
+    }
+
+    /**
+     * Provide products collection filtered with store
+     *
+     * @param Store $store
+     * @return Collection
+     */
+    public function getCollectionForStore(Store $store):Collection
+    {
+        /** @var Collection $collection */
+        $collection = $this->collectionFactory->create();
+
+        $collection->setStore($store);
+        $collection->addAttributeToSelect(
+            'gift_message_available'
+        );
+        $collection->addAttributeToSelect(
+            'sku'
+        );
+        $collection->addStoreFilter();
+
+        return $collection;
+    }
+}

lib/internal/Magento/Framework/View/Layout/etc/elements.xsd

@@ -14,7 +14,13 @@
                     <xs:sequence>
                         <xs:element name="updater" type="updaterType" minOccurs="0" maxOccurs="1"/>
                     </xs:sequence>
-                    <xs:attribute name="shared" type="xs:boolean" default="true" use="optional"/>
+                </xs:extension>
+            </xs:complexContent>
+        </xs:complexType>
+        <xs:complexType name="object">
+            <xs:complexContent>
+                <xs:extension base="argumentType">
+                    <xs:attribute name="shared" use="optional" type="xs:boolean"/>
                 </xs:extension>
             </xs:complexContent>
         </xs:complexType>