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| <?php | |
| declare( strict_types = 1 ); | |
| namespace Wikimedia\Parsoid\Html2Wt\DOMHandlers; | |
| use Wikimedia\Parsoid\DOM\Element; | |
| use Wikimedia\Parsoid\DOM\Node; | |
| use Wikimedia\Parsoid\Html2Wt\SerializerState; | |
| use Wikimedia\Parsoid\Utils\DOMUtils; | |
| use Wikimedia\Parsoid\Utils\WTUtils; | |
| class HeadingHandler extends DOMHandler { | |
| /** @var string Heading open/close wikitext (e.g. '===') */ | |
| public $headingWT; | |
| /** | |
| * @param string $headingWT Heading open/close wikitext (e.g. '===') | |
| */ | |
| public function __construct( string $headingWT ) { | |
| parent::__construct( true ); | |
| $this->headingWT = $headingWT; | |
| } | |
| /** @inheritDoc */ | |
| public function handle( | |
| Element $node, SerializerState $state, bool $wrapperUnmodified = false | |
| ): ?Node { | |
| // For new elements, for prettier wikitext serialization, | |
| // emit a space after the last '=' char. | |
| $space = $this->getLeadingSpace( $state, $node, ' ' ); | |
| $state->emitChunk( $this->headingWT . $space, $node ); | |
| $state->singleLineContext->enforce(); | |
| if ( $node->hasChildNodes() ) { | |
| $state->serializeChildren( $node, null, DOMUtils::firstNonDeletedChild( $node ) ); | |
| } else { | |
| // Deal with empty headings | |
| $state->emitChunk( '<nowiki/>', $node ); | |
| } | |
| // For new elements, for prettier wikitext serialization, | |
| // emit a space before the first '=' char. | |
| $space = $this->getTrailingSpace( $state, $node, ' ' ); | |
| $state->emitChunk( $space . $this->headingWT, $node ); // Why emitChunk here?? | |
| $state->singleLineContext->pop(); | |
| return $node->nextSibling; | |
| } | |
| /** @inheritDoc */ | |
| public function before( Element $node, Node $otherNode, SerializerState $state ): array { | |
| if ( WTUtils::isNewElt( $node ) && DOMUtils::previousNonSepSibling( $node ) && | |
| !WTUtils::isAnnotationStartMarkerMeta( $otherNode ) | |
| ) { | |
| // Default to two preceding newlines for new content | |
| return [ 'min' => 2, 'max' => 2 ]; | |
| } elseif ( WTUtils::isNewElt( $otherNode ) | |
| && DOMUtils::previousNonSepSibling( $node ) === $otherNode | |
| ) { | |
| // T72791: The previous node was newly inserted, separate | |
| // them for readability, except if it's an annotation tag | |
| if ( WTUtils::isAnnotationStartMarkerMeta( $otherNode ) ) { | |
| return [ 'min' => 1, 'max' => 2 ]; | |
| } | |
| return [ 'min' => 2, 'max' => 2 ]; | |
| } else { | |
| return [ 'min' => 1, 'max' => 2 ]; | |
| } | |
| } | |
| /** @inheritDoc */ | |
| public function after( Element $node, Node $otherNode, SerializerState $state ): array { | |
| return [ 'min' => 1, 'max' => 2 ]; | |
| } | |
| } |