Version 1

[yaffs-website] / web / core / modules / system / src / Plugin / Condition / CurrentThemeCondition.php

diff --git a/web/core/modules/system/src/Plugin/Condition/CurrentThemeCondition.php b/web/core/modules/system/src/Plugin/Condition/CurrentThemeCondition.php
new file mode 100644 (file)
index 0000000..d282963
--- /dev/null
+++ b/web/core/modules/system/src/Plugin/Condition/CurrentThemeCondition.php
@@ -0,0 +1,130 @@
+<?php
+
+namespace Drupal\system\Plugin\Condition;
+
+use Drupal\Core\Condition\ConditionPluginBase;
+use Drupal\Core\Extension\ThemeHandlerInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Theme\ThemeManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a 'Current Theme' condition.
+ *
+ * @Condition(
+ *   id = "current_theme",
+ *   label = @Translation("Current Theme"),
+ * )
+ */
+class CurrentThemeCondition extends ConditionPluginBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * The theme manager.
+   *
+   * @var \Drupal\Core\Theme\ThemeManagerInterface
+   */
+  protected $themeManager;
+
+  /**
+   * The theme handler.
+   *
+   * @var \Drupal\Core\Extension\ThemeHandlerInterface
+   */
+  protected $themeHandler;
+
+  /**
+   * Constructs a CurrentThemeCondition condition plugin.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Theme\ThemeManagerInterface $theme_manager
+   *   The theme manager.
+   * @param \Drupal\Core\Extension\ThemeHandlerInterface $theme_handler
+   *   The theme handler.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, ThemeManagerInterface $theme_manager, ThemeHandlerInterface $theme_handler) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->themeManager = $theme_manager;
+    $this->themeHandler = $theme_handler;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('theme.manager'),
+      $container->get('theme_handler')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    return ['theme' => ''] + parent::defaultConfiguration();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    $form['theme'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Theme'),
+      '#default_value' => $this->configuration['theme'],
+      '#options' => array_map(function ($theme_info) {
+        return $theme_info->info['name'];
+      }, $this->themeHandler->listInfo()),
+    ];
+    return parent::buildConfigurationForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+    $this->configuration['theme'] = $form_state->getValue('theme');
+    parent::submitConfigurationForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function evaluate() {
+    if (!$this->configuration['theme']) {
+      return TRUE;
+    }
+
+    return $this->themeManager->getActiveTheme()->getName() == $this->configuration['theme'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function summary() {
+    if ($this->isNegated()) {
+      return $this->t('The current theme is not @theme', ['@theme' => $this->configuration['theme']]);
+    }
+
+    return $this->t('The current theme is @theme', ['@theme' => $this->configuration['theme']]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheContexts() {
+    $contexts = parent::getCacheContexts();
+    $contexts[] = 'theme';
+    return $contexts;
+  }
+
+}