TreeNodeCollection.php

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<?php
namespace TYPO3\CMS\Backend\Tree;

class TreeNodeCollection extends \ArrayObject {

    public function __construct(array $data = array()) {
        if (count($data)) {
            $this->dataFromArray($data);
        }
    }

    public function asort() {
        $this->uasort(array($this, 'nodeCompare'));
    }

    public function nodeCompare(\TYPO3\CMS\Backend\Tree\TreeNode $node, \TYPO3\CMS\Backend\Tree\TreeNode $otherNode) {
        return $node->compareTo($otherNode);
    }

    public function serialize() {
        return serialize($this->toArray());
    }

    public function unserialize($serializedString) {
        $arrayRepresentation = unserialize($serializedString);
        if ($arrayRepresentation['serializeClassName'] !== get_class($this)) {
            throw new \TYPO3\CMS\Core\Exception('Deserialized object type is not identical!', 1294586647);
        }
        $this->dataFromArray($arrayRepresentation);
    }

    public function toArray() {
        $arrayRepresentation = array(
            'serializeClassName' => get_class($this)
        );
        $iterator = $this->getIterator();
        while ($iterator->valid()) {
            $arrayRepresentation[] = $iterator->current()->toArray();
            $iterator->next();
        }
        return $arrayRepresentation;
    }

    public function dataFromArray($data) {
        unset($data['serializeClassName']);
        foreach ($data as $index => $nodeArray) {
            $node = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($nodeArray['serializeClassName'], $nodeArray);
            $this->offsetSet($index, $node);
        }
    }

}