Add payment gateway order condition rule

CHANGELOG-WIP.md

@@ -0,0 +1,5 @@
+# Release Notes for Craft Commerce (WIP)
+
+## Administration
+
+- Added a new "Payment Gateway" order condition rule. ([#3722](https://github.com/craftcms/commerce/discussions/3722))

src/elements/conditions/orders/OrderCondition.php

@@ -38,6 +38,7 @@ protected function selectableConditionRules(): array
             ItemTotalConditionRule::class,
             OrderStatusConditionRule::class,
             OrderSiteConditionRule::class,
+            PaymentGatewayConditionRule::class,
             ReferenceConditionRule::class,
             ShippingMethodConditionRule::class,
             TotalDiscountConditionRule::class,

src/elements/conditions/orders/PaymentGatewayConditionRule.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace craft\commerce\elements\conditions\orders;
+
+use Craft;
+use craft\base\conditions\BaseMultiSelectConditionRule;
+use craft\base\conditions\BaseSelectConditionRule;
+use craft\base\ElementInterface;
+use craft\commerce\elements\db\OrderQuery;
+use craft\commerce\elements\Order;
+use craft\commerce\Plugin;
+use craft\elements\conditions\ElementConditionRuleInterface;
+use yii\db\QueryInterface;
+
+/**
+ * Payment Gateway condition rule.
+ *
+ * @author Pixel & Tonic, Inc. <[email protected]>
+ * @since 5.3.0
+ */
+class PaymentGatewayConditionRule extends BaseSelectConditionRule implements ElementConditionRuleInterface
+{
+    /**
+     * @inheritdoc
+     */
+    public function getLabel(): string
+    {
+        return Craft::t('commerce', 'Payment Gateway');
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getExclusiveQueryParams(): array
+    {
+        return ['gatewayId'];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function options(): array
+    {
+        return Plugin::getInstance()->getGateways()->getAllGateways()->mapWithKeys(function($gateway) {
+            return [$gateway->id => $gateway->name];
+        })->all();
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function modifyQuery(QueryInterface $query): void
+    {
+        /** @var OrderQuery $query */
+        $query->gatewayId($this->value);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function matchElement(ElementInterface $element): bool
+    {
+        /** @var Order $element */
+        return $this->matchValue($element->gatewayId);
+    }
+}

src/translations/en/commerce.php

@@ -831,6 +831,7 @@
     'Payment Amount' => 'Payment Amount',
     'Payment Currencies' => 'Payment Currencies',
     'Payment Method' => 'Payment Method',
+    'Payment Gateway' => 'Payment Gateway',
     'Payment error: {message}' => 'Payment error: {message}',
     'Payment method issue' => 'Payment method issue',
     'Payment source created.' => 'Payment source created.',