public function __construct($name, $payload = NULL)
{
parent::__construct($name, $payload);
// if entry_id="4|5|6" was given, we filter them here
$parameter = $this->param('entry_id');
if ($parameter) {
$this->_entry_id_fn = 'array_intersect';
if (strncasecmp($parameter, 'not ', 4) == 0) {
$this->_entry_id_fn = 'array_diff';
$parameter = substr($parameter, 4);
}
$parameter = trim($parameter, " |\r\n\t");
$this->_entry_id_opts = explode('|', $parameter);
}
}
/**
* Branch length utility method.
*
*/
protected function _find_longest_branch(EE_TreeNode $tree)
{
$it = new RecursiveIteratorIterator(new ParseNodeIterator(array($tree)), RecursiveIteratorIterator::LEAVES_ONLY);
$longest = 0;
foreach ($it as $leaf) {
$depth = $it->getDepth();
if ($tree->is_root()) {
$depth -= 1;
}
if ($depth > $longest) {
$longest = $depth;
}
}
return $longest;
}
/**
* Branch length utility method.
*
*/
protected function _min_max_branches(EE_TreeNode $tree)
{
$it = new RecursiveIteratorIterator(new ParseNodeIterator(array($tree)), RecursiveIteratorIterator::LEAVES_ONLY);
$shortest = INF;
$longest = 0;
foreach ($it as $leaf) {
$depth = $it->getDepth();
if ($tree->is_root()) {
$depth -= 1;
}
if ($depth < $shortest) {
$shortest = $depth;
}
if ($depth > $longest) {
$longest = $depth;
}
}
if (is_infinite($shortest)) {
$shortest = 0;
}
return compact('shortest', 'longest');
}
/**
* Add a child node to the current node.
*
* Notifies the child of its parent and adds the child name to
* the child name array. Does not enforce unique names since it
* may be desireable to have non-unique named children. It's on
* the developer to not rely on the get() method in that case
*
* @return void
*/
public function add(EE_TreeNode $child)
{
if ($child == $this) {
throw new RuntimeException('Cannot add tree node to itself.');
}
if ($this->_frozen) {
throw new RuntimeException('Cannot add child. Tree node is frozen.');
}
$this->children[] = $child;
$this->children_names[$child->name] = $child;
$child->_set_parent($this);
}