ArrayTreeRenderer.php

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<?php
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Core\Tree\TableConfiguration;
 
use ‪TYPO3\CMS\Backend\Tree\AbstractTree;
use ‪TYPO3\CMS\Backend\Tree\Renderer\AbstractTreeRenderer;
use ‪TYPO3\CMS\Backend\Tree\TreeNodeCollection;
use ‪TYPO3\CMS\Backend\Tree\TreeRepresentationNode;
 
class ‪ArrayTreeRenderer extends ‪AbstractTreeRenderer
{
    protected ‪$recursionLevel = 0;
 
    public function ‪renderNode(‪TreeRepresentationNode $node, $recursive = true)
    {
        $nodeArray = [];
        $nodeArray[] = $this->‪getNodeArray($node);
        if ($recursive && $node->‪hasChildNodes()) {
            $this->recursionLevel++;
            $children = $this->‪renderNodeCollection($node->‪getChildNodes());
            foreach ($children as $child) {
                $nodeArray[] = $child;
            }
            $this->recursionLevel--;
        }
        return $nodeArray;
    }
 
    protected function ‪getNodeArray(‪TreeRepresentationNode $node)
    {
        $overlayIconName = '';
        if (is_object($node->‪getIcon())) {
            $iconName = $node->‪getIcon()->‪getIdentifier();
            if (is_object($node->‪getIcon()->‪getOverlayIcon())) {
                $overlayIconName = $node->‪getIcon()->‪getOverlayIcon()->getIdentifier();
            }
        } else {
            $iconName = $node->‪getIcon();
        }
        $nodeArray = [
            'identifier' => htmlspecialchars($node->‪getId()),
            // No need for htmlspecialchars() here as d3 is using 'textContent' property of the HTML DOM node
            'name' => $node->‪getLabel(),
            'icon' => $iconName,
            'overlayIcon' => $overlayIconName,
            'depth' => ‪$this->recursionLevel,
            'hasChildren' => (bool)$node->‪hasChildNodes(),
            'selectable' => true,
        ];
        if ($node instanceof ‪DatabaseTreeNode) {
            $nodeArray['checked'] = (bool)$node->getSelected();
            if (!$node->getSelectable()) {
                $nodeArray['checked'] = false;
                $nodeArray['selectable'] = false;
            }
        }
        return $nodeArray;
    }
 
    public function ‪renderTree(‪AbstractTree $tree, $recursive = true)
    {
        $this->recursionLevel = 0;
        return $this->‪renderNode($tree->‪getRoot(), $recursive);
    }
 
    public function ‪renderNodeCollection(‪TreeNodeCollection $collection, $recursive = true)
    {
        $treeItems = [];
        foreach ($collection as $node) {
            $allNodes = $this->‪renderNode($node, $recursive);
            if ($allNodes[0]) {
                $treeItems[] = $allNodes[0];
            }
            $nodeCount = count($allNodes);
            if ($nodeCount > 1) {
                for ($i = 1; $i < $nodeCount; $i++) {
                    $treeItems[] = $allNodes[$i];
                }
            }
        }
        return $treeItems;
    }
}