/**
* Show all navigation groups
*
* @return void
*/
public function index()
{
$groups = $this->adjacency_list->get_all_groups();
$data['groups'] = array();
foreach ($groups as $group) {
$items = $this->adjacency_list->get_all($group['id']);
$data['groups'][$group['id']] = $group;
$data['groups'][$group['id']]['items'] = parse_children($items);
}
$data['title'] = 'Navigation';
$this->load->view('adjacency/list/index', $data);
}
/**
* Get all items from group to dropdown array
*
* @param int $group_id Group id
* @param int $exclude Excluded id
* @param int $level Current level
* @param array &$tree Tree array
*
* @return array
*/
public function get_all_for_dropdown($group_id = 1, $exclude = 0, $level = 0, &$tree = array())
{
$output = array();
if ($level === 0) {
$tree = $this->get_all($group_id);
$tree = parse_children($tree);
$output[0] = $this->dropdown['parent'];
}
if (!empty($tree)) {
foreach ($tree as &$leaf) {
if ($exclude != (int) $leaf['id']) {
$output[$leaf['id']] = str_repeat($this->dropdown['space'], $level) . ' ' . htmlspecialchars($leaf['name'], ENT_QUOTES, 'UTF-8');
if ($this->max_levels !== 0 && $this->max_levels > $level + 1 || $this->max_levels === 0 || $exclude === 0) {
if (isset($leaf['children']) && !empty($leaf['children'])) {
$output += $this->get_all_for_dropdown($group_id, $exclude, $level + 1, $leaf['children']);
}
}
}
}
}
return $output;
}
/**
* Build tree item
*
* Creates adjacency list based on group (id or slug) and shows leafs related only to current item
*
* @param mixed $group Group id or slug
* @param int $item_id Current item id
* @param array $attributes Any attributes
* @param array &$tree Tree array
* @param array &$in_array Output tree array
*
* @return string
*/
function build_tree_item($group, $item_id, $attributes = array(), &$tree = NULL, &$in_array = array())
{
if (empty($tree)) {
$CI =& get_instance();
$CI->load->library('adjacency_list');
$tree = $CI->adjacency_list->get_all($group);
}
if (!empty($tree)) {
foreach ($tree as &$leaf) {
if ($item_id === (int) $leaf['id']) {
array_push($in_array, $leaf['id']);
build_tree_item($group, (int) $leaf['parent_id'], $attributes, $tree, $in_array);
}
}
$tree = parse_children($tree);
$in_array = array_reverse($in_array);
return format_tree($tree, $in_array, $attributes);
}
return '';
}
