class.ilTestTaxonomyTree.php

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<?php

class ilTestTaxonomyTree extends ilTaxonomyTree
{
    private $allNodes = array();
    private $maxOrderValueLength = 1;
    private $pathNodesByNodeCache = array();
    private $orderingFieldName;

    public function __construct($taxonomyId)
    {
        parent::__construct($taxonomyId);
        $this->readRootId();
    }

    public function initOrderedTreeIndex(ilObjTaxonomy $taxonomy)
    {
        switch ($taxonomy->getSortingMode()) {
            case ilObjTaxonomy::SORT_MANUAL:
                $this->orderingFieldName = 'order_nr';
                break;

            case ilObjTaxonomy::SORT_ALPHABETICAL:
            default:
                $this->orderingFieldName = 'title';
        }

        $this->allNodes = $this->getSubTree($this->getNodeData($this->getRootId()));
        $this->maxOrderValueLength = $this->getMaxOrderValueLength($this->allNodes);
    }

    public function getNodeOrderingPathString($nodeId): string
    {
        $pathNodes = $this->getPathNodes($nodeId);

        $pathString = '';

        foreach ($pathNodes as $n) {
            if (strlen($pathString)) {
                $pathString .= '-';
            }

            switch ($this->orderingFieldName) {
                case 'order_nr':
                    $pathString .= sprintf("%0{$this->maxOrderValueLength}d", (int) $n[$this->orderingFieldName]);
                    break;
                case 'title':
                default:
                    $pathString .= $n[$this->orderingFieldName];
            }
        }

        return $pathString;
    }

    protected function getPathNodes($nodeId)
    {
        if (!isset($this->pathNodesByNodeCache[$nodeId])) {
            $this->pathNodesByNodeCache[$nodeId] = $this->getPathFull($nodeId);
        }

        return $this->pathNodesByNodeCache[$nodeId];
    }

    protected function getMaxOrderValueLength($nodes): int
    {
        $length = 0;

        foreach ($nodes as $n) {
            $l = strlen($n[$this->orderingFieldName]);

            if ($l > $length) {
                $length = $l;
            }
        }

        return $length;
    }
}