1<?php
2
3/*
4 * This file is part of the league/commonmark package.
5 *
6 * (c) Colin O'Dell <colinodell@gmail.com>
7 *
8 * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
9 *  - (c) John MacFarlane
10 *
11 * For the full copyright and license information, please view the LICENSE
12 * file that was distributed with this source code.
13 */
14
15namespace League\CommonMark\Block\Renderer;
16
17use League\CommonMark\Block\Element\AbstractBlock;
18use League\CommonMark\Block\Element\ListItem;
19use League\CommonMark\Block\Element\Paragraph;
20use League\CommonMark\ElementRendererInterface;
21use League\CommonMark\Extension\TaskList\TaskListItemMarker;
22use League\CommonMark\HtmlElement;
23
24final class ListItemRenderer implements BlockRendererInterface
25{
26    /**
27     * @param ListItem                 $block
28     * @param ElementRendererInterface $htmlRenderer
29     * @param bool                     $inTightList
30     *
31     * @return string
32     */
33    public function render(AbstractBlock $block, ElementRendererInterface $htmlRenderer, bool $inTightList = false)
34    {
35        if (!($block instanceof ListItem)) {
36            throw new \InvalidArgumentException('Incompatible block type: ' . \get_class($block));
37        }
38
39        $contents = $htmlRenderer->renderBlocks($block->children(), $inTightList);
40        if (\substr($contents, 0, 1) === '<' && !$this->startsTaskListItem($block)) {
41            $contents = "\n" . $contents;
42        }
43        if (\substr($contents, -1, 1) === '>') {
44            $contents .= "\n";
45        }
46
47        $attrs = $block->getData('attributes', []);
48
49        $li = new HtmlElement('li', $attrs, $contents);
50
51        return $li;
52    }
53
54    private function startsTaskListItem(ListItem $block): bool
55    {
56        $firstChild = $block->firstChild();
57
58        return $firstChild instanceof Paragraph && $firstChild->firstChild() instanceof TaskListItemMarker;
59    }
60}
61