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<?php |
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/* |
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* This file is part of the league/commonmark package. |
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* |
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* (c) Colin O'Dell <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace League\CommonMark\Extension\TableOfContents\Normalizer; |
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use League\CommonMark\Block\Element\ListBlock; |
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use League\CommonMark\Block\Element\ListItem; |
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use League\CommonMark\Extension\TableOfContents\TableOfContents; |
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final class AsIsNormalizerStrategy implements NormalizerStrategyInterface |
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{ |
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/** @var ListBlock */ |
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private $parentListBlock; |
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/** @var int */ |
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private $parentLevel = 1; |
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/** @var ListItem|null */ |
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private $lastListItem; |
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public function __construct(TableOfContents $toc) |
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{ |
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$this->parentListBlock = $toc; |
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} |
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public function addItem(int $level, ListItem $listItemToAdd) |
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{ |
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while ($level > $this->parentLevel) { |
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// Descend downwards, creating new ListBlocks if needed, until we reach the correct depth |
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if ($this->lastListItem === null) { |
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$this->lastListItem = new ListItem($this->parentListBlock->getListData()); |
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$this->parentListBlock->appendChild($this->lastListItem); |
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} |
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$newListBlock = new ListBlock($this->parentListBlock->getListData()); |
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$this->lastListItem->appendChild($newListBlock); |
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$this->parentListBlock = $newListBlock; |
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$this->lastListItem = null; |
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$this->parentLevel++; |
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} |
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while ($level < $this->parentLevel) { |
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// Search upwards for the previous parent list block |
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while (true) { |
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$this->parentListBlock = $this->parentListBlock->parent(); |
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if ($this->parentListBlock instanceof ListBlock) { |
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break; |
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} |
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} |
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$this->parentLevel--; |
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} |
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$this->parentListBlock->appendChild($listItemToAdd); |
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$this->lastListItem = $listItemToAdd; |
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} |
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} |
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thephpleague /
commonmark
