Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/tour/src/TipPluginInterface.php

@@ -0,0 +1,82 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\tour\TipPluginInterface.
+ */
+
+namespace Drupal\tour;
+
+/**
+ * Defines an interface for tour items.
+ *
+ * @see \Drupal\tour\Annotation\Tip
+ * @see \Drupal\tour\TipPluginBase
+ * @see \Drupal\tour\TipPluginManager
+ * @see plugin_api
+ */
+interface TipPluginInterface {
+
+  /**
+   * Returns id of the tip.
+   *
+   * @return string
+   *   The id of the tip.
+   */
+  public function id();
+
+  /**
+   * Returns label of the tip.
+   *
+   * @return string
+   *   The label of the tip.
+   */
+  public function getLabel();
+
+  /**
+   * Returns weight of the tip.
+   *
+   * @return string
+   *   The weight of the tip.
+   */
+  public function getWeight();
+
+  /**
+   * Returns an array of attributes for the tip wrapper.
+   *
+   * @return array
+   *   An array of classes and values.
+   */
+  public function getAttributes();
+
+  /**
+   * Used for returning values by key.
+   *
+   * @var string
+   *   Key of the value.
+   *
+   * @return string
+   *   Value of the key.
+   */
+  public function get($key);
+
+  /**
+   * Used for returning values by key.
+   *
+   * @var string
+   *   Key of the value.
+   *
+   * @var string
+   *   Value of the key.
+   */
+  public function set($key, $value);
+
+  /**
+   * Returns a renderable array.
+   *
+   * @return array
+   *   A renderable array.
+   */
+  public function getOutput();
+
+}