Issue #3345071: Add menu setting type

src/Helpers/Menu.php

+<?php
+
+namespace Drupal\ui_patterns_settings\Helpers;
+
+use Drupal\Core\Template\Attribute;
+use Drupal\Core\Url;
+
+/**
+ *
+ */
+class Menu {
+
+  /**
+   * Normalize menu items.
+   *
+   * Don't inject URL object into patterns templates, use "title" as item
+   * label and "url" as item target.
+   *
+   * @param array $items
+   *   The items to convert.
+   *
+   * @return array
+   */
+  public static function normalize(array $items): array {
+    foreach ($items as $index => &$item) {
+      if (!is_array($item)) {
+        unset($items[$index]);
+        continue;
+      }
+      if (array_key_exists("text", $item)) {
+        // Examples: links.html.twig, breadcrumb.html.twig, pager.html.twig,
+        // views_mini_pager.html.twig.
+        $item["title"] = $item["text"];
+        unset($item["text"]);
+      }
+      if (!array_key_exists("title", $item)) {
+        $item["title"] = $index;
+      }
+      if (array_key_exists("href", $item)) {
+        // Examples: pager.html.twig, views_mini_pager.html.twig.
+        $item["url"] = $item["href"];
+        unset($item["href"]);
+      }
+      if (!isset($item["url"]) && isset($item["link"])) {
+        // Example: links.html.twig.
+        $item["url"] = $item["link"]["#url"];
+        $item["url"]->setOptions($item["link"]["#options"]);
+        unset($item["link"]);
+      }
+      if (array_key_exists("url", $item) && ($item["url"] instanceof Url)) {
+        // Examples: menu.html.twig, links.html.twig.
+        $url = $item["url"];
+        $item["url"] = $url->toString();
+        $options = $url->getOptions();
+        if (isset($options["attributes"])) {
+          $item["link_attributes"] = new Attribute($options["attributes"]);
+        }
+      }
+      if (array_key_exists("below", $item)) {
+        $item["below"] = self::normalize($item["below"]);
+      }
+    }
+    $items = array_values($items);
+    return $items;
+  }
+
+  /**
+   * Convert pager to menu.
+   *
+   * Convert pager data structure to menu data structure. Useful for
+   * pager.html.twig presenter template.
+   *
+   * @param array $items
+   *   The pager items to convert.
+   * @param int $current
+   *   The current page.
+   *
+   * @return array
+   */
+  public static function convertPagerToMenu(array $pager, int $current): array {
+    $items = [];
+    if (isset($pager["first"])) {
+      $items[] = $pager["first"];
+    }
+    if (isset($pager["previous"])) {
+      $items[] = $pager["previous"];
+    }
+    if (isset($pager["pages"])) {
+      foreach ($pager["pages"] as $index => $item) {
+        $item["text"] = $index;
+        if ($index == $current) {
+          unset($item["href"]);
+        }
+        $items[] = $item;
+      }
+    }
+    if (isset($pager["next"])) {
+      $items[] = $pager["next"];
+    }
+    if (isset($pager["last"])) {
+      $items[] = $pager["last"];
+    }
+    return $items;
+  }
+
+  /**
+   * Convert mini pager to menu.
+   *
+   * Convert views mini pager data structure to menu data structure. Useful for
+   * views-mini-pager.html.twig presenter template.
+   *
+   * @param array $items
+   *   The pager items to convert.
+   *
+   * @return array
+   */
+  public static function convertMiniPagerToMenu(array $pager): array {
+    $items = [];
+    if ($pager["previous"]) {
+      $items[] = $pager["previous"];
+    }
+    $items[] = [
+      "text" => $pager["current"],
+    ];
+    if ($pager["next"]) {
+      $items[] = $pager["next"];
+    }
+    return $items;
+  }
+
+}