core/includes/Drupal/Plugin/Core/SystemMenuBlock.php

   1 <?php
   2
   3 namespace Drupal\Plugin\Core;
   4 use Drupal\Plugin\PluginChildrenInterface;
   5
   6 /**
   7  * @file
   8  *   System module block for rendering system menus from the
   9  *   menu_list_system_menus() funtion.
  10  */
  11 class SystemMenuBlock extends AbstractBlock implements PluginChildrenInterface {
  12   protected $children;
  13   protected $child;
  14
  15   /**
  16    * Implements AccessInterface::access().
  17    */
  18   public function access() {
  19     global $user;
  20     if (!$user->uid) {
  21       return FALSE;
  22     }
  23     return parent::access();
  24   }
  25
  26   /**
  27    * Implements PluginChildrenInterface::getChild().
  28    */
  29   public function getChild($child) {
  30     $this->child = $child;
  31     if (!isset($this->children[$child])) {
  32       $this->getChildren();
  33     }
  34     if(isset($this->children[$child])) {
  35       $this->config = $this->children[$child];
  36       return $this->children[$child];
  37     }
  38     return array();
  39   }
  40
  41   /**
  42    * Implements PluginChildrenInterface::getChildren().
  43    */
  44   public function getChildren() {
  45     foreach (menu_list_system_menus() as $menu => $name) {
  46       $this->children[$menu] = clone($this->config);
  47       $this->children[$menu]->delta = $menu;
  48       $this->children[$menu]->subject = $name;
  49     }
  50     return $this->children;
  51   }
  52
  53   /**
  54    * Implements BlockInterface::info().
  55    */
  56   public function info() {
  57     $args = func_get_args();
  58     $child = $this->getChild($args[0]);
  59     if ($child) {
  60       return array(
  61         'info' => $child->subject,
  62         'cache' => DRUPAL_NO_CACHE,
  63       );
  64     }
  65     return array(
  66       'info' => 'Menu Block',
  67       'cache' => DRUPAL_NO_CACHE,
  68     );
  69   }
  70
  71   /**
  72    * Implements BlockInterface::build().
  73    */
  74   public function build() {
  75     return array(
  76       '#block' => $this->children[$this->child],
  77       menu_tree($this->child),
  78     );
  79   }
  80 }