issue #19609 Fixed for 2.2-develop

app/code/Magento/Config/Block/System/Config/Form.php

@@ -143,13 +143,15 @@ public function __construct(
         \Magento\Config\Model\Config\Structure $configStructure,
         \Magento\Config\Block\System\Config\Form\Fieldset\Factory $fieldsetFactory,
         \Magento\Config\Block\System\Config\Form\Field\Factory $fieldFactory,
-        array $data = []
+        array $data = [],
+        SettingChecker $settingChecker = null
     ) {
         parent::__construct($context, $registry, $formFactory, $data);
         $this->_configFactory = $configFactory;
         $this->_configStructure = $configStructure;
         $this->_fieldsetFactory = $fieldsetFactory;
         $this->_fieldFactory = $fieldFactory;
+        $this->settingChecker = $settingChecker ?: ObjectManager::getInstance()->get(SettingChecker::class);
 
         $this->_scopeLabels = [
             self::SCOPE_DEFAULT => __('[GLOBAL]'),
@@ -158,18 +160,6 @@ public function __construct(
         ];
     }
 
-    /**
-     * @deprecated 100.1.2
-     * @return SettingChecker
-     */
-    private function getSettingChecker()
-    {
-        if ($this->settingChecker === null) {
-            $this->settingChecker = ObjectManager::getInstance()->get(SettingChecker::class);
-        }
-        return $this->settingChecker;
-    }
-
     /**
      * Initialize objects required to render config form
      *
@@ -366,9 +356,8 @@ protected function _initElement(
 
         $sharedClass = $this->_getSharedCssClass($field);
         $requiresClass = $this->_getRequiresCssClass($field, $fieldPrefix);
+        $isReadOnly = $this->isReadOnly($field, $path);
 
-        $isReadOnly = $this->getElementVisibility()->isDisabled($field->getPath())
-            ?: $this->getSettingChecker()->isReadOnly($path, $this->getScope(), $this->getStringScopeCode());
         $formField = $fieldset->addField(
             $elementId,
             $field->getType(),
@@ -417,7 +406,7 @@ private function getFieldData(\Magento\Config\Model\Config\Structure\Element\Fie
     {
         $data = $this->getAppConfigDataValue($path);
 
-        $placeholderValue = $this->getSettingChecker()->getPlaceholderValue(
+        $placeholderValue = $this->settingChecker->getPlaceholderValue(
             $path,
             $this->getScope(),
             $this->getStringScopeCode()
@@ -718,6 +707,7 @@ protected function _getAdditionalElementTypes()
      *
      * @TODO delete this methods when {^see above^} is done
      * @return string
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getSectionCode()
     {
@@ -729,6 +719,7 @@ public function getSectionCode()
      *
      * @TODO delete this methods when {^see above^} is done
      * @return string
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getWebsiteCode()
     {
@@ -740,6 +731,7 @@ public function getWebsiteCode()
      *
      * @TODO delete this methods when {^see above^} is done
      * @return string
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getStoreCode()
     {
@@ -797,6 +789,26 @@ private function getAppConfig()
         return $this->appConfig;
     }
 
+    /**
+     * Check Path is Readonly
+     *
+     * @param \Magento\Config\Model\Config\Structure\Element\Field $field
+     * @param string $path
+     * @return boolean
+     */
+    private function isReadOnly(\Magento\Config\Model\Config\Structure\Element\Field $field, $path)
+    {
+        $isReadOnly = $this->settingChecker->isReadOnly(
+            $path,
+            ScopeConfigInterface::SCOPE_TYPE_DEFAULT
+        );
+        if (!$isReadOnly) {
+            $isReadOnly = $this->getElementVisibility()->isDisabled($field->getPath())
+                ?: $this->settingChecker->isReadOnly($path, $this->getScope(), $this->getStringScopeCode());
+        }
+        return $isReadOnly;
+    }
+
     /**
      * Retrieve deployment config data value by path
      *

app/code/Magento/Config/Test/Unit/Block/System/Config/FormTest.php

@@ -103,6 +103,9 @@ protected function setUp()
         $this->_fieldsetFactoryMock = $this->createMock(\Magento\Config\Block\System\Config\Form\Fieldset\Factory::class);
         $this->_fieldFactoryMock = $this->createMock(\Magento\Config\Block\System\Config\Form\Field\Factory::class);
         $this->_coreConfigMock = $this->createMock(\Magento\Framework\App\Config\ScopeConfigInterface::class);
+        $settingCheckerMock = $this->getMockBuilder(SettingChecker::class)
+            ->disableOriginalConstructor()
+            ->getMock();
 
         $this->_backendConfigMock = $this->createMock(\Magento\Config\Model\Config::class);
 
@@ -150,6 +153,7 @@ protected function setUp()
             'fieldsetFactory' => $this->_fieldsetFactoryMock,
             'fieldFactory' => $this->_fieldFactoryMock,
             'context' => $context,
+            'settingChecker' => $settingCheckerMock,
         ];
 
         $objectArguments = $helper->getConstructArguments(\Magento\Config\Block\System\Config\Form::class, $data);
@@ -529,7 +533,7 @@ public function testInitFields(
 
         $elementVisibilityMock = $this->getMockBuilder(ElementVisibilityInterface::class)
             ->getMockForAbstractClass();
-        $elementVisibilityMock->expects($this->once())
+        $elementVisibilityMock->expects($this->any())
             ->method('isDisabled')
             ->willReturn($isDisabled);