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( '', $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 ]; } }