Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Cache / Context / ThemeCacheContext.php

diff --git a/web/core/lib/Drupal/Core/Cache/Context/ThemeCacheContext.php b/web/core/lib/Drupal/Core/Cache/Context/ThemeCacheContext.php
new file mode 100644 (file)
index 0000000..e7aeb89
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Cache/Context/ThemeCacheContext.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace Drupal\Core\Cache\Context;
+
+use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Theme\ThemeManagerInterface;
+
+/**
+ * Defines the ThemeCacheContext service, for "per theme" caching.
+ *
+ * Cache context ID: 'theme'.
+ */
+class ThemeCacheContext implements CacheContextInterface {
+
+  /**
+   * The theme manager.
+   *
+   * @var \Drupal\Core\Theme\ThemeManagerInterface
+   */
+  protected $themeManager;
+
+  /**
+   * Constructs a new ThemeCacheContext service.
+   *
+   * @param \Drupal\Core\Theme\ThemeManagerInterface $theme_manager
+   *   The theme manager.
+   */
+  public function __construct(ThemeManagerInterface $theme_manager) {
+    $this->themeManager = $theme_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getLabel() {
+    return t('Theme');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getContext() {
+    return $this->themeManager->getActiveTheme()->getName() ?: 'stark';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheableMetadata() {
+    return new CacheableMetadata();
+  }
+
+}