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[yaffs-website] / web / core / modules / ckeditor / src / CKEditorPluginCssInterface.php

diff --git a/web/core/modules/ckeditor/src/CKEditorPluginCssInterface.php b/web/core/modules/ckeditor/src/CKEditorPluginCssInterface.php
new file mode 100644 (file)
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+++ b/web/core/modules/ckeditor/src/CKEditorPluginCssInterface.php
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+<?php
+
+namespace Drupal\ckeditor;
+
+use Drupal\editor\Entity\Editor;
+
+/**
+ * Defines an interface for CKEditor plugins with associated CSS.
+ *
+ * This allows a CKEditor plugin to add additional CSS in iframe CKEditor
+ * instances without needing to implement hook_ckeditor_css_alter().
+ *
+ * @see \Drupal\ckeditor\CKEditorPluginInterface
+ * @see \Drupal\ckeditor\CKEditorPluginButtonsInterface
+ * @see \Drupal\ckeditor\CKEditorPluginContextualInterface
+ * @see \Drupal\ckeditor\CKEditorPluginConfigurableInterface
+ * @see \Drupal\ckeditor\CKEditorPluginBase
+ * @see \Drupal\ckeditor\CKEditorPluginManager
+ * @see \Drupal\ckeditor\Annotation\CKEditorPlugin
+ * @see plugin_api
+ */
+interface CKEditorPluginCssInterface extends CKEditorPluginInterface {
+
+  /**
+   * Retrieves enabled plugins' iframe instance CSS files.
+   *
+   * Note: this does not use a Drupal asset library because this CSS will be
+   * loaded by CKEditor, not by Drupal.
+   *
+   * @param \Drupal\editor\Entity\Editor $editor
+   *   A configured text editor object.
+   *
+   * @return string[]
+   *   An array of CSS files. This is a flat list of file paths relative to
+   *   the Drupal root.
+   */
+  public function getCssFiles(Editor $editor);
+
+}