--- /dev/null
+<?php
+
+namespace Drupal\system\Plugin\Condition;
+
+use Drupal\Component\Utility\Unicode;
+use Drupal\Core\Condition\ConditionPluginBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Path\AliasManagerInterface;
+use Drupal\Core\Path\CurrentPathStack;
+use Drupal\Core\Path\PathMatcherInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+/**
+ * Provides a 'Request Path' condition.
+ *
+ * @Condition(
+ * id = "request_path",
+ * label = @Translation("Request Path"),
+ * )
+ */
+class RequestPath extends ConditionPluginBase implements ContainerFactoryPluginInterface {
+
+ /**
+ * An alias manager to find the alias for the current system path.
+ *
+ * @var \Drupal\Core\Path\AliasManagerInterface
+ */
+ protected $aliasManager;
+
+ /**
+ * The path matcher.
+ *
+ * @var \Drupal\Core\Path\PathMatcherInterface
+ */
+ protected $pathMatcher;
+
+ /**
+ * The request stack.
+ *
+ * @var \Symfony\Component\HttpFoundation\RequestStack
+ */
+ protected $requestStack;
+
+ /**
+ * The current path.
+ *
+ * @var \Drupal\Core\Path\CurrentPathStack
+ */
+ protected $currentPath;
+
+ /**
+ * Constructs a RequestPath condition plugin.
+ *
+ * @param \Drupal\Core\Path\AliasManagerInterface $alias_manager
+ * An alias manager to find the alias for the current system path.
+ * @param \Drupal\Core\Path\PathMatcherInterface $path_matcher
+ * The path matcher service.
+ * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
+ * The request stack.
+ * @param \Drupal\Core\Path\CurrentPathStack $current_path
+ * The current path.
+ * @param array $configuration
+ * A configuration array containing information about the plugin instance.
+ * @param string $plugin_id
+ * The plugin_id for the plugin instance.
+ * @param array $plugin_definition
+ * The plugin implementation definition.
+ */
+ public function __construct(AliasManagerInterface $alias_manager, PathMatcherInterface $path_matcher, RequestStack $request_stack, CurrentPathStack $current_path, array $configuration, $plugin_id, array $plugin_definition) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+ $this->aliasManager = $alias_manager;
+ $this->pathMatcher = $path_matcher;
+ $this->requestStack = $request_stack;
+ $this->currentPath = $current_path;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static(
+ $container->get('path.alias_manager'),
+ $container->get('path.matcher'),
+ $container->get('request_stack'),
+ $container->get('path.current'),
+ $configuration,
+ $plugin_id,
+ $plugin_definition);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function defaultConfiguration() {
+ return ['pages' => ''] + parent::defaultConfiguration();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+ $form['pages'] = [
+ '#type' => 'textarea',
+ '#title' => $this->t('Pages'),
+ '#default_value' => $this->configuration['pages'],
+ '#description' => $this->t("Specify pages by using their paths. Enter one path per line. The '*' character is a wildcard. An example path is %user-wildcard for every user page. %front is the front page.", [
+ '%user-wildcard' => '/user/*',
+ '%front' => '<front>',
+ ]),
+ ];
+ return parent::buildConfigurationForm($form, $form_state);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+ $this->configuration['pages'] = $form_state->getValue('pages');
+ parent::submitConfigurationForm($form, $form_state);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function summary() {
+ $pages = array_map('trim', explode("\n", $this->configuration['pages']));
+ $pages = implode(', ', $pages);
+ if (!empty($this->configuration['negate'])) {
+ return $this->t('Do not return true on the following pages: @pages', ['@pages' => $pages]);
+ }
+ return $this->t('Return true on the following pages: @pages', ['@pages' => $pages]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function evaluate() {
+ // Convert path to lowercase. This allows comparison of the same path
+ // with different case. Ex: /Page, /page, /PAGE.
+ $pages = Unicode::strtolower($this->configuration['pages']);
+ if (!$pages) {
+ return TRUE;
+ }
+
+ $request = $this->requestStack->getCurrentRequest();
+ // Compare the lowercase path alias (if any) and internal path.
+ $path = $this->currentPath->getPath($request);
+ // Do not trim a trailing slash if that is the complete path.
+ $path = $path === '/' ? $path : rtrim($path, '/');
+ $path_alias = Unicode::strtolower($this->aliasManager->getAliasByPath($path));
+
+ return $this->pathMatcher->matchPath($path_alias, $pages) || (($path != $path_alias) && $this->pathMatcher->matchPath($path, $pages));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCacheContexts() {
+ $contexts = parent::getCacheContexts();
+ $contexts[] = 'url.path';
+ return $contexts;
+ }
+
+}