class MenuTreeStorage in Colossal Menu 8

Provides a menu tree storage using the database.

Hierarchy

• class \Drupal\colossal_menu\Menu\MenuTreeStorage implements MenuTreeStorageInterface

1 string reference to 'MenuTreeStorage'

colossal_menu.services.yml in ./colossal_menu.services.yml

colossal_menu.services.yml

1 service uses MenuTreeStorage

colossal_menu.tree_storage in ./colossal_menu.services.yml

Drupal\colossal_menu\Menu\MenuTreeStorage

File

src/Menu/MenuTreeStorage.php, line 15

Namespace

Drupal\colossal_menu\Menu

class MenuTreeStorage implements MenuTreeStorageInterface {

  /**
   * The maximum depth of a menu links tree.
   *
   * This storage has no theoretical limit, but we'll set a reasonable limit.
   */
  const MAX_DEPTH = 20;

  /**
   * The database connection.
   *
   * @var \Drupal\Core\Database\Connection
   */
  protected $connection;

  /**
   * The entity manager.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $storage;

  /**
   * The current route match.
   *
   * @var \Drupal\Core\Routing\RouteMatchInterface
   */
  protected $currentRouteMatch;

  /**
   * The database table name.
   *
   * @var string
   */
  protected $table;

  /**
   * Constructs a new \Drupal\Core\Menu\MenuTreeStorage.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   A Database connection to use for reading and writing configuration data.
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The EntityTypeManager service.
   * @param \Drupal\Core\Routing\RouteMatchInterface $current_route_match
   *   The currently active route match object.
   * @param string $entity_type
   *   The entity type name.
   * @param string $table
   *   A database table name to store configuration data in.
   */
  public function __construct(Connection $connection, EntityTypeManagerInterface $entity_type_manager, RouteMatchInterface $current_route_match, string $entity_type, string $table) {
    $this->connection = $connection;
    $this->storage = $entity_type_manager
      ->getStorage($entity_type);
    $this->currentRouteMatch = $current_route_match;
    $this->table = $table;
  }

  /**
   * {@inheritdoc}
   */
  public function maxDepth() {
    return self::MAX_DEPTH;
  }

  /**
   * {@inheritdoc}
   *
   * Allow the entity system to cache the results.
   */
  public function resetDefinitions() {
  }

  /**
   * {@inheritdoc}
   *
   * Allow the entity system to cache the results.
   */
  public function rebuild(array $definitions) {
  }

  /**
   * {@inheritdoc}
   */
  public function load($id) {
    return $this->storage
      ->load($id);
  }

  /**
   * {@inheritdoc}
   */
  public function loadMultiple(array $ids) {
    return $this->storage
      ->loadMultiple($ids);
  }

  /**
   * {@inheritdoc}
   */
  public function loadByProperties(array $properties) {
    return $this->storage
      ->loadByProperties($properties);
  }

  /**
   * {@inheritdoc}
   */
  public function loadByRoute($route_name, array $route_parameters = [], $menu_name = NULL) {
    $url = new Url($route_name, $route_parameters);
    $query = $this->storage
      ->getQuery();
    $query
      ->condition('link__uri', $url
      ->getUri());
    if ($menu_name) {
      $query
        ->condition('menu', $menu_name);
    }
    return $query
      ->execute();
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $definition) {
    return $this->storage
      ->create($definition);
  }

  /**
   * {@inheritdoc}
   */
  public function delete($id) {
    return $this->storage
      ->delete($this->storage
      ->load($id));
  }

  /**
   * {@inheritdoc}
   */
  public function loadTreeData($menu_name, MenuTreeParameters $parameters) {
    $query = $this->connection
      ->select($this->table, 't')
      ->fields('t', [
      'ancestor',
      'descendant',
      'depth',
    ])
      ->condition('e.menu', $menu_name)
      ->orderBy('t.depth', 'ASC')
      ->orderBy('e.weight', 'ASC');
    $query
      ->innerJoin($this->storage
      ->getEntityType()
      ->get('base_table'), 'e', 't.ancestor = e.id');
    if ($parameters->root) {
      $query
        ->condition('t.ancestor', $parameters->root);
    }
    if ($parameters->minDepth > 1) {

      // Since the default depth is 1, and in our storage it's 0, we'll
      // decrement the minimum depth.
      $query
        ->condition('t.depth', '>=', $parameters->minDepth - 1);
    }
    if ($parameters->maxDepth) {
      $query
        ->condition('t.depth', '<=', $parameters->maxDepth);
    }
    $result = $query
      ->execute();
    $flat = [];
    $depth = [];
    while ($row = $result
      ->fetchObject()) {
      $flat[$row->ancestor][] = $row->descendant;
      if (isset($depth[$row->descendant]) && $row->depth > $depth[$row->descendant]) {
        $depth[$row->descendant] = $row->depth;
      }
      elseif (!isset($depth[$row->descendant])) {
        $depth[$row->descendant] = $row->depth;
      }
    }
    $links = $this
      ->loadMultiple(array_keys($flat));
    $routes = [];
    foreach ($links as $link) {
      if (!$link
        ->isExternal() && ($name = $link
        ->getRouteName())) {
        $routes[$link
          ->id()] = $name;
      }
    }
    $tree = $this
      ->treeDataRecursive($flat, $links, $depth, $routes);
    return [
      'tree' => $tree,
      'route_names' => $routes,
    ];
  }

  /**
   * Build the tree from the closure table.
   *
   * @param array $flat
   *   A flat tree returned from the database.
   * @param array $links
   *   An array of Link objects.
   * @param array $depth
   *   An array of depth values.
   * @param array $routes
   *   An array of route names.
   *
   * @return array
   *   A fully-formed link tree.
   */
  protected function treeDataRecursive(array $flat, array $links, array $depth, array $routes) {
    uasort($flat, function ($a, $b) {
      return count($a) - count($b);
    });
    $tree = [];
    foreach ($flat as $id => $decendents) {
      foreach ($decendents as $decendent) {
        if ($id == $decendent) {
          $active = FALSE;
          if (isset($routes[$id]) && $this->currentRouteMatch
            ->getRouteName() == $routes[$id]) {
            $active = TRUE;
          }
          $tree[$id] = [
            'link' => $links[$id],
            'has_children' => FALSE,
            'subtree' => [],
            'depth' => $depth[$id] + 1,
            'in_active_trail' => $active,
          ];
        }
        else {
          if (isset($tree[$decendent])) {
            $tree[$id]['has_children'] = TRUE;
            $tree[$id]['in_active_trail'] = $tree[$decendent]['in_active_trail'];
            $tree[$id]['subtree'][$decendent] = $tree[$decendent];
            unset($tree[$decendent]);
            if (count($tree[$id]['subtree']) > 1) {
              uasort($tree[$id]['subtree'], function ($a, $b) {
                return $a['link']
                  ->getWeight() < $b['link']
                  ->getWeight() ? -1 : 1;
              });
            }
          }
        }
      }
    }
    if (count($tree) > 1) {
      uasort($tree, function ($a, $b) {
        return $a['link']
          ->getWeight() < $b['link']
          ->getWeight() ? -1 : 1;
      });
    }
    return $tree;
  }

  /**
   * {@inheritdoc}
   */
  public function loadAllChildren($id, $max_relative_depth = NULL) {
    $query = $this->connection
      ->select($this->table, 't');
    $query
      ->fields('t', [
      'descendant',
    ]);
    $query
      ->condition('t.ancestor', $id);
    if ($max_relative_depth) {
      $query
        ->condition('t.depth', '<=', $max_relative_depth);
    }
    $query
      ->orderBy('t.depth', 'ASC');
    $ids = $query
      ->execute()
      ->fetchCol();
    return $this->storage
      ->getQuery()
      ->condition('id', $ids)
      ->orderBy('weight', 'ASC');
  }

  /**
   * {@inheritdoc}
   */
  public function getAllChildIds($id) {
    return $this->connection
      ->select($this->table, 't')
      ->fields('t', [
      'descendant',
    ])
      ->condition('t.ancestor', $id)
      ->execute()
      ->fetchCol();
  }

  /**
   * {@inheritdoc}
   */
  public function loadSubtreeData($id, $max_relative_depth = NULL) {
    $link = $this
      ->load($id);
    $params = new MenuTreeParameters();
    $params->root = $id;
    $params
      ->setMaxDepth($max_relative_depth);
    return $this
      ->loadTreeData($link
      ->getMenuName(), $params);
  }

  /**
   * {@inheritdoc}
   */
  public function getRootPathIds($id) {
    return $this->connection
      ->select($this->table, 't')
      ->fields('t', [
      'ancestor',
    ])
      ->condition('t.descendant', $id)
      ->orderBy('t.depth', 'DESC')
      ->execute()
      ->fetchCol();
  }

  /**
   * {@inheritdoc}
   */
  public function getExpanded($menu_name, array $parents) {
    $query = $this->connection
      ->select($this->table, 't')
      ->fields('t', [
      'descendant',
    ])
      ->condition('t.ancestor', $parents)
      ->condition('e.menu', $menu_name)
      ->orderBy('t.depth', 'ASC')
      ->orderBy('e.weight', 'ASC');
    $query
      ->innerJoin($this->storage
      ->getEntityType()
      ->get('base_table'), 'e', 't.ancestor = e.id');
    return $query
      ->execute()
      ->fetchCol();
  }

  /**
   * {@inheritdoc}
   */
  public function getSubtreeHeight($id) {
    return $this->conneciton
      ->select($this->table, 't')
      ->fields('t', [
      'depth',
    ])
      ->condition('t.descendant', $id)
      ->orderBy('t.depth', 'DESC')
      ->limit(0, 1)
      ->execute()
      ->fetchField();
  }

  /**
   * {@inheritdoc}
   */
  public function menuNameInUse($menu_name) {
    $links = $this->storage
      ->loadByProperties([
      'menu' => $menu_name,
    ]);
    return empty($links);
  }

  /**
   * {@inheritdoc}
   */
  public function getMenuNames() {
    return $this->connection
      ->select($this->storage
      ->getEntityType()
      ->get('base_table'), 'e')
      ->distinct()
      ->fields('e', [
      'menu',
    ])
      ->execute()
      ->fetchCol();
  }

  /**
   * {@inheritdoc}
   */
  public function countMenuLinks($menu_name = NULL) {
    $query = $this->connection
      ->select($this->storage
      ->getEntityType()
      ->get('base_table'), 'e')
      ->count();
    if ($menu_name) {
      $query
        ->condition('e.menu', $menu_name);
    }
    return $query
      ->execute();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
MenuTreeStorage::$connection	protected	property	The database connection.
MenuTreeStorage::$currentRouteMatch	protected	property	The current route match.
MenuTreeStorage::$storage	protected	property	The entity manager.
MenuTreeStorage::$table	protected	property	The database table name.
MenuTreeStorage::countMenuLinks	public	function	Counts the total number of menu links in one menu or all menus. Overrides MenuTreeStorageInterface::countMenuLinks
MenuTreeStorage::delete	public	function	Deletes a menu link definition from the storage. Overrides MenuTreeStorageInterface::delete
MenuTreeStorage::getAllChildIds	public	function	Loads all the IDs for menu links that are below the given ID. Overrides MenuTreeStorageInterface::getAllChildIds
MenuTreeStorage::getExpanded	public	function	Finds expanded links in a menu given a set of possible parents. Overrides MenuTreeStorageInterface::getExpanded
MenuTreeStorage::getMenuNames	public	function	Returns the used menu names in the tree storage. Overrides MenuTreeStorageInterface::getMenuNames
MenuTreeStorage::getRootPathIds	public	function	Returns all the IDs that represent the path to the root of the tree. Overrides MenuTreeStorageInterface::getRootPathIds
MenuTreeStorage::getSubtreeHeight	public	function	Finds the height of a subtree rooted by the given ID. Overrides MenuTreeStorageInterface::getSubtreeHeight
MenuTreeStorage::load	public	function	Loads a menu link plugin definition from the storage. Overrides MenuTreeStorageInterface::load
MenuTreeStorage::loadAllChildren	public	function	Loads all the enabled menu links that are below the given ID. Overrides MenuTreeStorageInterface::loadAllChildren
MenuTreeStorage::loadByProperties	public	function	Loads multiple plugin definitions from the storage based on properties. Overrides MenuTreeStorageInterface::loadByProperties
MenuTreeStorage::loadByRoute	public	function	Loads multiple plugin definitions from the storage based on route. Overrides MenuTreeStorageInterface::loadByRoute
MenuTreeStorage::loadMultiple	public	function	Loads multiple plugin definitions from the storage. Overrides MenuTreeStorageInterface::loadMultiple
MenuTreeStorage::loadSubtreeData	public	function	Loads a subtree rooted by the given ID. Overrides MenuTreeStorageInterface::loadSubtreeData
MenuTreeStorage::loadTreeData	public	function	Loads a menu link tree from the storage. Overrides MenuTreeStorageInterface::loadTreeData
MenuTreeStorage::maxDepth	public	function	The maximum depth of tree the storage implementation supports. Overrides MenuTreeStorageInterface::maxDepth
MenuTreeStorage::MAX_DEPTH		constant	The maximum depth of a menu links tree.
MenuTreeStorage::menuNameInUse	public	function	Determines whether a specific menu name is used in the tree. Overrides MenuTreeStorageInterface::menuNameInUse
MenuTreeStorage::rebuild	public	function	Allow the entity system to cache the results. Overrides MenuTreeStorageInterface::rebuild
MenuTreeStorage::resetDefinitions	public	function	Allow the entity system to cache the results. Overrides MenuTreeStorageInterface::resetDefinitions
MenuTreeStorage::save	public	function	Saves a plugin definition to the storage. Overrides MenuTreeStorageInterface::save
MenuTreeStorage::treeDataRecursive	protected	function	Build the tree from the closure table.
MenuTreeStorage::__construct	public	function	Constructs a new \Drupal\Core\Menu\MenuTreeStorage.