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<?php
/**
* @package ZOO
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* The helper class for object trees
*
* @package Component.Helpers
* @since 2.0
*/
class TreeHelper extends AppHelper {
/**
* Build tree.
*
* @param array $objects Objects
* @param string $classname the objects classname
* @param int $max_depth
* @param string $parent_property
*
* @return array Object list
* @since 2.0
*/
public function build($objects, $classname, $max_depth = 0, $parent_property = 'parent') {
// create root category
$root = $this->app->object->create($classname);
$root->id = 0;
$root->name = 'ROOT';
$root->alias = '_root';
$objects[0] = $root;
foreach ($objects as $object) {
// set parent and child relations
if (isset($object->$parent_property) && isset($objects[$object->$parent_property])) {
$object->setParent($objects[$object->$parent_property]);
$objects[$object->$parent_property]->addChild($object);
}
}
if ($max_depth) {
foreach ($objects as $object) {
if (count($object->getPathway()) > $max_depth) {
$object->getParent()->removeChild($object);
$object->setParent($objects[0]);
$objects[0]->addChild($object);
}
}
}
return $objects;
}
/**
* Build tree list which reflects the tree structure.
*
* @param string|int $id Object id to start
* @param array $objects Objects collection
* @param array $list Tree list return value
* @param string $prefix Sublevel prefix
* @param string $spacer Spacer
* @param string $indent Indent
* @param int $level Start level
* @param int $maxlevel Maximum level depth
*
* @return array Tree list
* @since 2.0
*/
public function buildList($id, $objects, $list = array(), $prefix = '<sup>|_</sup> ', $spacer = '. ', $indent = '', $level = 0, $maxlevel = 9999) {
if (isset($objects[$id]) && $level <= $maxlevel) {
foreach ($objects[$id]->getChildren() as $child) {
// set treename
$id = $child->id;
$list[$id] = $child;
$list[$id]->treename = $indent.($indent == '' ? $child->name : $prefix.$child->name);
$list = $this->buildList($id, $objects, $list, $prefix, $spacer, $indent.$spacer, $level + 1, $maxlevel);
}
}
return $list;
}
}