Issue #3231522 by enrico.sato: Limit menus to show inside select field

config/schema/field_menu.schema.yml

@@ -0,0 +1,9 @@
+field_menu.settings:
+  type: mapping
+  label: 'Field Menu settings'
+  mapping:
+    menu_type_checkbox:
+      type: sequence
+      label: 'Available menus'
+      sequence:
+       type: string

src/Plugin/Field/FieldType/MenuItemId.php

@@ -5,6 +5,7 @@
 use Drupal\Core\Field\FieldItemBase;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\TypedData\DataDefinition;
+use Drupal\Core\Form\FormStateInterface;
 
 /**
  * Plugin implementation of the 'field_menu' field type.
@@ -72,4 +73,32 @@ public static function propertyDefinitions(FieldStorageDefinitionInterface $fiel
     return $properties;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultFieldSettings() {
+    return [
+      'menu_type_checkbox' => [],
+    ] + parent::defaultFieldSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fieldSettingsForm(array $form, FormStateInterface $form_state) {
+
+    $element = [];
+    $menu_options = menu_ui_get_menus();
+    $default_value = !empty($this->getSetting('menu_type_checkbox')) ? $this->getSetting('menu_type_checkbox') : [];
+    $element['menu_type_checkbox'] = [
+      '#type' => 'checkboxes',
+      '#title' => $this->t('Available menus'),
+      '#options' => $menu_options,
+      '#default_value' => $default_value,
+      '#description' => $this->t('Select menu to show on select. Leave empty to show all.'),
+    ];
+
+    return $element;
+  }
+
 }

src/Plugin/Field/FieldWidget/TreeWidget.php

@@ -105,7 +105,15 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
      * has access to with a unique key
      * (uses the same fuctionality as when a user adds a menu link to a node)
      */
-    $menu_item_key_field = $this->menuParentSelector->parentSelectElement($menu_parent, $menu_link);
+
+    // Limit menu list from field settings.
+    $menus = NULL;
+    if (!empty($items->getSetting('menu_type_checkbox'))) {
+      $menu_selected = array_diff($items->getSetting('menu_type_checkbox'), [0]);
+      $menus = empty($menu_selected) ? NULL : $menu_selected;
+    }
+
+    $menu_item_key_field = $this->menuParentSelector->parentSelectElement($menu_parent, $menu_link, $menus);
     $menu_item_key_field['#default_value'] = $menu_key_value;
     $menu_item_key_field['#description'] = $this->t('Select a menu root item from the available menu links');
     $menu_item_key_field += [