interface CKEditorPluginInterface

interface CKEditorPluginInterface extends PluginInspectionInterface {
    
    /**
     * Indicates if this plugin is part of the optimized CKEditor build.
     *
     * Plugins marked as internal are implicitly loaded as part of CKEditor.
     *
     * @return bool
     */
    public function isInternal();
    
    /**
     * Returns a list of plugins this plugin requires.
     *
     * @param \Drupal\editor\Entity\Editor $editor
     *   A configured text editor object.
     *
     * @return array
     *   An unindexed array of plugin names this plugin requires. Each plugin is
     *   is identified by its annotated ID.
     */
    public function getDependencies(Editor $editor);
    
    /**
     * Returns a list of libraries this plugin requires.
     *
     * These libraries will be attached to the text_format element on which the
     * editor is being loaded.
     *
     * @param \Drupal\editor\Entity\Editor $editor
     *   A configured text editor object.
     *
     * @return array
     *   An array of libraries suitable for usage in a render API #attached
     *   property.
     */
    public function getLibraries(Editor $editor);
    
    /**
     * Returns the Drupal root-relative file path to the plugin JavaScript file.
     *
     * Note: this does not use a Drupal library because this uses CKEditor's API.
     * @see https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_resourceManager.html#method-addExternal
     *
     * @return string|false
     *   The Drupal root-relative path to the file, FALSE if an internal plugin.
     */
    public function getFile();
    
    /**
     * Returns the additions to CKEDITOR.config for a specific CKEditor instance.
     *
     * The editor's settings can be retrieved via $editor->getSettings(), but be
     * aware that it may not yet contain plugin-specific settings, because the
     * user may not yet have configured the form.
     * If there are plugin-specific settings (verify with isset()), they can be
     * found at
     * @code
     * $settings = $editor->getSettings();
     * $plugin_specific_settings = $settings['plugins'][$plugin_id];
     * @endcode
     *
     * @param \Drupal\editor\Entity\Editor $editor
     *   A configured text editor object.
     *
     * @return array
     *   A keyed array, whose keys will end up as keys under CKEDITOR.config.
     */
    public function getConfig(Editor $editor);

}