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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Html2Wt\DOMHandlers; |
| 5 | |
| 6 | use Wikimedia\Parsoid\DOM\Element; |
| 7 | use Wikimedia\Parsoid\DOM\Node; |
| 8 | use Wikimedia\Parsoid\Html2Wt\SerializerState; |
| 9 | use Wikimedia\Parsoid\Utils\DiffDOMUtils; |
| 10 | use Wikimedia\Parsoid\Utils\DOMCompat; |
| 11 | use Wikimedia\Parsoid\Utils\DOMUtils; |
| 12 | use Wikimedia\Parsoid\Utils\WTUtils; |
| 13 | |
| 14 | class ListHandler extends DOMHandler { |
| 15 | |
| 16 | /** @var string[] List of tag names which van be first children of the list */ |
| 17 | public $firstChildNames; |
| 18 | |
| 19 | /** |
| 20 | * @param string[] $firstChildNames List of tag names which van be first children of the list |
| 21 | */ |
| 22 | public function __construct( array $firstChildNames ) { |
| 23 | parent::__construct( true ); |
| 24 | $this->firstChildNames = $firstChildNames; |
| 25 | } |
| 26 | |
| 27 | /** @inheritDoc */ |
| 28 | public function handle( |
| 29 | Element $node, SerializerState $state, bool $wrapperUnmodified = false |
| 30 | ): ?Node { |
| 31 | // Disable single-line context here so that separators aren't |
| 32 | // suppressed between nested list elements. |
| 33 | $state->singleLineContext->disable(); |
| 34 | |
| 35 | $firstChildElt = DiffDOMUtils::firstNonSepChild( $node ); |
| 36 | |
| 37 | // Skip builder-inserted wrappers |
| 38 | // Ex: <ul><s auto-inserted-start-and-end-><li>..</li><li>..</li></s>...</ul> |
| 39 | // output from: <s>\n*a\n*b\n*c</s> |
| 40 | while ( $firstChildElt && $this->isBuilderInsertedElt( $firstChildElt ) ) { |
| 41 | $firstChildElt = DiffDOMUtils::firstNonSepChild( $firstChildElt ); |
| 42 | } |
| 43 | |
| 44 | if ( !$firstChildElt || !in_array( DOMCompat::nodeName( $firstChildElt ), $this->firstChildNames, true ) |
| 45 | || WTUtils::isLiteralHTMLNode( $firstChildElt ) |
| 46 | ) { |
| 47 | $state->emitChunk( $this->getListBullets( $state, $node ), $node ); |
| 48 | } |
| 49 | |
| 50 | $liHandler = static function ( $state, $text, $opts ) use ( $node ) { |
| 51 | return $state->serializer->wteHandlers->liHandler( $node, $state, $text, $opts ); |
| 52 | }; |
| 53 | $state->serializeChildren( $node, $liHandler ); |
| 54 | $state->singleLineContext->pop(); |
| 55 | return $node->nextSibling; |
| 56 | } |
| 57 | |
| 58 | /** @inheritDoc */ |
| 59 | public function before( Element $node, Node $otherNode, SerializerState $state ): array { |
| 60 | if ( DOMUtils::atTheTop( $otherNode ) ) { |
| 61 | return [ 'min' => 0, 'max' => 0 ]; |
| 62 | } |
| 63 | |
| 64 | // node is in a list & otherNode has the same list parent |
| 65 | // => exactly 1 newline |
| 66 | if ( DOMUtils::isListItem( $node->parentNode ) && $otherNode->parentNode === $node->parentNode ) { |
| 67 | return [ 'min' => 1, 'max' => 1 ]; |
| 68 | } |
| 69 | |
| 70 | // A list in a block node (<div>, <td>, etc) doesn't need a leading empty line |
| 71 | // if it is the first non-separator child (ex: <div><ul>...</div>) |
| 72 | if ( |
| 73 | DOMUtils::isWikitextBlockNode( $node->parentNode ) && |
| 74 | DiffDOMUtils::firstNonSepChild( $node->parentNode ) === $node |
| 75 | ) { |
| 76 | return [ 'min' => 1, 'max' => 2 ]; |
| 77 | } elseif ( DOMUtils::isFormattingElt( $otherNode ) ) { |
| 78 | return [ 'min' => 1, 'max' => 1 ]; |
| 79 | } else { |
| 80 | return [ |
| 81 | 'min' => WTUtils::isNewElt( $node ) && !WTUtils::isMarkerAnnotation( $otherNode ) |
| 82 | ? 2 : 1, |
| 83 | 'max' => 2 |
| 84 | ]; |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | /** @inheritDoc */ |
| 89 | public function after( Element $node, Node $otherNode, SerializerState $state ): array { |
| 90 | return $this->wtListEOL( $node, $otherNode ); |
| 91 | } |
| 92 | |
| 93 | } |