taxonomy-menu-alter-tree-3.patch

diff --git a/config/schema/taxonomy_menu.schema.yml b/config/schema/taxonomy_menu.schema.yml
index 91f73c0..a247492 100644
--- a/config/schema/taxonomy_menu.schema.yml
+++ b/config/schema/taxonomy_menu.schema.yml
@@ -20,6 +20,9 @@ taxonomy_menu.taxonomy_menu.*:
     depth:
       type: integer
       label: 'Depth'
+    limit:
+      type: integer
+      label: 'Limit'
     menu_parent:
       type: string
       label: 'Menu parent'
diff --git a/src/Entity/TaxonomyMenu.php b/src/Entity/TaxonomyMenu.php
index 27f2c23..1d53f24 100644
--- a/src/Entity/TaxonomyMenu.php
+++ b/src/Entity/TaxonomyMenu.php
@@ -67,6 +67,13 @@ class TaxonomyMenu extends ConfigEntityBase implements TaxonomyMenuInterface {
    */
   protected $depth;
 
+  /**
+   * The limit number of items.
+   *
+   * @var int
+   */
+  protected $limit;
+
   /**
    * The menu to embed the vocabulary.
    *
@@ -125,6 +132,13 @@ class TaxonomyMenu extends ConfigEntityBase implements TaxonomyMenuInterface {
     return $this->menu_parent;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getLimit() {
+      return $this->limit;
+  }
+
   /**
    * Return if menu items should be ordered by the terms weight.
    *
@@ -202,6 +216,10 @@ class TaxonomyMenu extends ConfigEntityBase implements TaxonomyMenuInterface {
       $links[$mlid] = $this->buildMenuDefinition($term, $base_plugin_definition);
     }
 
+    if ($this->limit && is_int($this->limit)) {
+      $links = array_slice($links, 0, $this->limit);
+    }
+
     return $links;
   }
 
diff --git a/src/Form/TaxonomyMenuForm.php b/src/Form/TaxonomyMenuForm.php
index 300cf08..c5abc99 100644
--- a/src/Form/TaxonomyMenuForm.php
+++ b/src/Form/TaxonomyMenuForm.php
@@ -22,14 +22,14 @@ class TaxonomyMenuForm extends EntityForm {
    * @var \Drupal\Core\Menu\MenuParentFormSelector
    */
   protected $menuParentSelector;
-  
+
   /**
    * The entity field manager.
    *
    * @var \Drupal\Core\Entity\EntityFieldManager
    */
   protected $entityFieldManager;
-  
+
   /**
    * Constructs a new TaxonomyMenuMenuLink.
    *
@@ -151,6 +151,11 @@ class TaxonomyMenuForm extends EntityForm {
       '#default_value' => $taxonomy_menu->getDepth(),
       '#options' => range(1, 9),
     ];
+    $form['limit'] = [
+      '#type' => 'number',
+      '#title' => $this->t('Limit number of elements'),
+      '#default_value' =>$taxonomy_menu->getLimit(),
+    ];
 
     // Menu selection.
     $custom_menus = Menu::loadMultiple();
diff --git a/src/TaxonomyMenuInterface.php b/src/TaxonomyMenuInterface.php
index 11d7973..e60d347 100644
--- a/src/TaxonomyMenuInterface.php
+++ b/src/TaxonomyMenuInterface.php
@@ -34,6 +34,14 @@ interface TaxonomyMenuInterface extends ConfigEntityInterface {
    */
   public function getDepth();
 
+  /**
+   * Get the limit of items.
+   *
+   * @return int
+   *   The limit.
+   */
+  public function getLimit();
+
   /**
    * Get the menu item to use as the parent for the taxonomy menu.
    *