function _dhtml_menu_subtree in DHTML Menu 6.3

Same name and namespace in other branches

1. 8 dhtml_menu.theme.inc \_dhtml_menu_subtree()
2. 6.4 dhtml_menu.theme.inc \_dhtml_menu_subtree()
3. 7 dhtml_menu.theme.inc \_dhtml_menu_subtree()

Traverses the menu tree and returns the sub-tree of the item indicated by the parameter.

Parameters

$item: An menu item whose children should be found.

Return value

The items below the passed menu item.

1 call to _dhtml_menu_subtree()

dhtml_menu_theme_menu_item in ./dhtml_menu.module

Preprocessor for menu_item. Checks whether the current item has children that were not rendered, and loads and renders them.

File

./dhtml_menu.module, line 163

dhtml_menu.module Adds preprocessors to the menu theming functions that will add dynamic expansion to their menus.

Code

function _dhtml_menu_subtree($item) {
  static $index = array();
  static $indexed = array();

  // This looks expensive, but menu_tree_all_data uses static caching.
  $tree = menu_tree_all_data($item['menu_name']);

  // Index the tree to find the path to this item.
  if (!isset($indexed[$item['menu_name']])) {
    $index += _dhtml_menu_index($tree);
    $indexed[$item['menu_name']] = TRUE;
  }

  // Traverse the tree.
  foreach ($index[$item['mlid']]['parents'] as $mlid) {
    $key = $index[$mlid]['key'];
    if (!isset($tree[$key])) {
      return array();
    }
    $tree = $tree[$key]['below'];
  }
  $key = $index[$item['mlid']]['key'];
  return isset($tree[$key]['below']) && is_array($tree[$key]['below']) ? $tree[$key]['below'] : array();
}