40564: Added support for 'disabled' state for individual select options

lib/internal/Magento/Framework/Data/Form/Element/Select.php

@@ -131,6 +131,9 @@ protected function _optionToHtml($option, $selected)
             if (in_array($option['value'], $selected)) {
                 $html .= ' selected="selected"';
             }
+            if ($option['disabled'] ?? false) {
+                $html .= ' disabled="disabled"';
+            }
             $html .= '>' . $this->_escape($option['label']) . '</option>' . "\n";
             if (!empty($option['style'])) {
                 $html .= $this->secureRenderer->renderStyleAsTag($option['style'], "#$optionId");

lib/internal/Magento/Framework/Data/Test/Unit/Form/Element/SelectTest.php

@@ -0,0 +1,128 @@
+<?php
+/**
+ * Copyright 2026 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\Framework\Data\Test\Unit\Form\Element;
+
+use Magento\Framework\Data\Form\AbstractForm;
+use Magento\Framework\Data\Form\Element\CollectionFactory;
+use Magento\Framework\Data\Form\Element\Factory;
+use Magento\Framework\Data\Form\Element\Select;
+use Magento\Framework\Escaper;
+use Magento\Framework\Math\Random;
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
+use Magento\Framework\View\Helper\SecureHtmlRenderer;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(Select::class)]
+class SelectTest extends TestCase
+{
+    private const string ELEMENT_ID = 'test_select_element_id';
+    private const string ELEMENT_NAME = 'test_select_element_name';
+
+    /**
+     * @var Select
+     */
+    private Select $element;
+
+    protected function setUp(): void
+    {
+        $objectManager = new ObjectManager($this);
+
+        $randomMock = $this->createMock(Random::class);
+        $randomMock->method('getRandomString')->willReturn('some-random-string');
+
+        $secureRendererMock = $this->createMock(SecureHtmlRenderer::class);
+        $secureRendererMock->method('renderStyleAsTag')
+            ->willReturnCallback(
+                function (string $style, string $selector): string {
+                    return "<style>{$selector} { {$style} }</style>";
+                }
+            )
+        ;
+
+        /** @var Select $element */
+        $element = $objectManager->getObject(
+            Select::class,
+            [
+                'factoryElement' => $this->createMock(Factory::class),
+                'factoryCollection' => $this->createMock(CollectionFactory::class),
+                '_escaper' => new Escaper(),
+                'random' => $randomMock,
+                'secureRenderer' => $secureRendererMock,
+            ]
+        );
+
+        $element->setForm($this->createMock(AbstractForm::class));
+        $element->setId(self::ELEMENT_ID);
+        $element->setName(self::ELEMENT_NAME);
+
+        $this->element = $element;
+    }
+
+    #[DataProvider('disabledOptionDataProvider')]
+    public function testSelectWithDisabledOptions(array $option, bool $shouldBeDisabled): void
+    {
+        $this->element->setValues([$option]);
+
+        $optionHtml = $this->extractOptionHtml($this->element->getElementHtml(), $option['value']);
+
+        $this->assertNotEmpty($optionHtml);
+
+        if ($shouldBeDisabled) {
+            $this->assertStringContainsString('disabled="disabled"', $optionHtml);
+        } else {
+            $this->assertStringNotContainsString('disabled="disabled"', $optionHtml);
+        }
+    }
+
+    #[DataProvider('disabledOptionDataProvider')]
+    public function testOptgroupWithDisabledOptions(array $option, bool $shouldBeDisabled): void
+    {
+        $this->element->setValues([
+            [
+                'label' => 'Group',
+                'value' => [$option],
+            ],
+        ]);
+
+        $optionHtml = $this->extractOptionHtml($this->element->getElementHtml(), $option['value']);
+
+        $this->assertNotEmpty($optionHtml);
+
+        if ($shouldBeDisabled) {
+            $this->assertStringContainsString('disabled="disabled"', $optionHtml);
+        } else {
+            $this->assertStringNotContainsString('disabled="disabled"', $optionHtml);
+        }
+    }
+
+    public static function disabledOptionDataProvider(): iterable
+    {
+        yield 'explicitly_disabled' => [['value' => '1', 'label' => 'Option', 'disabled' => true], true];
+        yield 'disabled_flag_as_int_1' => [['value' => '1', 'label' => 'Option', 'disabled' => 1], true];
+        yield 'disabled_flag_as_string_foo' => [['value' => '1', 'label' => 'Option', 'disabled' => 'foo'], true];
+        yield 'disabled_flag_as_string_1' => [['value' => '1', 'label' => 'Option', 'disabled' => '1'], true];
+
+        yield 'explicitly_enabled' => [['value' => '1', 'label' => 'Option', 'disabled' => false], false];
+        yield 'disabled_flag_as_int_0' => [['value' => '1', 'label' => 'Option', 'disabled' => 0], false];
+        yield 'disabled_flag_as_string_0' => [['value' => '1', 'label' => 'Option', 'disabled' => '0'], false];
+        yield 'disabled_flag_as_empty_string' => [['value' => '1', 'label' => 'Option', 'disabled' => ''], false];
+        yield 'disabled_flag_as_null' => [['value' => '1', 'label' => 'Option', 'disabled' => null], false];
+        yield 'disabled_flag_not_provided' => [['value' => '1', 'label' => 'Option'], false];
+    }
+
+    private function extractOptionHtml(string $elementHtml, string $value): string
+    {
+        $pattern = '/<option[^>]*value="' . preg_quote($value, '/') . '"[^>]*>.*?<\/option>/s';
+
+        preg_match($pattern, $elementHtml, $matches);
+
+        return $matches[0] ?? '';
+    }
+}