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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Html2Wt\DOMHandlers; |
| 5 | |
| 6 | use Wikimedia\Parsoid\DOM\DocumentFragment; |
| 7 | use Wikimedia\Parsoid\DOM\Element; |
| 8 | use Wikimedia\Parsoid\DOM\Node; |
| 9 | use Wikimedia\Parsoid\Utils\DOMDataUtils; |
| 10 | use Wikimedia\Parsoid\Utils\DOMUtils; |
| 11 | use Wikimedia\Parsoid\Utils\WTUtils; |
| 12 | |
| 13 | /** |
| 14 | * Factory for picking the right DOMHandler for a DOM element. |
| 15 | * FIXME: memoize handlers, maybe? |
| 16 | */ |
| 17 | class DOMHandlerFactory { |
| 18 | |
| 19 | /** |
| 20 | * Get the DOMHandler that's appropriate for serializing a HTML tag. |
| 21 | * |
| 22 | * Porting note: this is the equivalent of DOMHandlers.tagHandlers[tag]. |
| 23 | * @param string $tag |
| 24 | * @return DOMHandler|null |
| 25 | */ |
| 26 | public function newFromTagHandler( string $tag ): ?DOMHandler { |
| 27 | switch ( $tag ) { |
| 28 | case 'a': |
| 29 | return new AHandler(); |
| 30 | case 'audio': |
| 31 | return new MediaHandler(); |
| 32 | case 'b': |
| 33 | return new QuoteHandler( "'''" ); |
| 34 | case 'body': |
| 35 | return new BodyHandler(); |
| 36 | case 'br': |
| 37 | return new BRHandler(); |
| 38 | case 'caption': |
| 39 | return new CaptionHandler(); |
| 40 | case 'dd': |
| 41 | return new DDHandler(); // multi-line dt/dd |
| 42 | case 'dd_row': |
| 43 | return new DDHandler( 'row' ); // single-line dt/dd |
| 44 | case 'dl': |
| 45 | return new ListHandler( [ 'dt', 'dd' ] ); |
| 46 | case 'dt': |
| 47 | return new DTHandler(); |
| 48 | case 'figure': |
| 49 | return new FigureHandler(); |
| 50 | case 'hr': |
| 51 | return new HRHandler(); |
| 52 | case 'h1': |
| 53 | return new HeadingHandler( '=' ); |
| 54 | case 'h2': |
| 55 | return new HeadingHandler( '==' ); |
| 56 | case 'h3': |
| 57 | return new HeadingHandler( '===' ); |
| 58 | case 'h4': |
| 59 | return new HeadingHandler( '====' ); |
| 60 | case 'h5': |
| 61 | return new HeadingHandler( '=====' ); |
| 62 | case 'h6': |
| 63 | return new HeadingHandler( '======' ); |
| 64 | case 'i': |
| 65 | return new QuoteHandler( "''" ); |
| 66 | case 'img': |
| 67 | return new ImgHandler(); |
| 68 | case 'li': |
| 69 | return new LIHandler(); |
| 70 | case 'link': |
| 71 | return new LinkHandler(); |
| 72 | case 'meta': |
| 73 | return new MetaHandler(); |
| 74 | case 'ol': |
| 75 | return new ListHandler( [ 'li' ] ); |
| 76 | case 'p': |
| 77 | return new PHandler(); |
| 78 | case 'pre': |
| 79 | return new PreHandler(); // Wikitext indent pre generated with leading space |
| 80 | case 'pre_html': |
| 81 | return new HTMLPreHandler(); // HTML pre |
| 82 | case 'span': |
| 83 | return new SpanHandler(); |
| 84 | case 'table': |
| 85 | return new TableHandler(); |
| 86 | case 'tbody': |
| 87 | return new JustChildrenHandler(); |
| 88 | case 'td': |
| 89 | return new TDHandler(); |
| 90 | case 'tfoot': |
| 91 | return new JustChildrenHandler(); |
| 92 | case 'th': |
| 93 | return new THHandler(); |
| 94 | case 'thead': |
| 95 | return new JustChildrenHandler(); |
| 96 | case 'tr': |
| 97 | return new TRHandler(); |
| 98 | case 'ul': |
| 99 | return new ListHandler( [ 'li' ] ); |
| 100 | case 'video': |
| 101 | return new MediaHandler(); |
| 102 | default: |
| 103 | return null; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Get a DOMHandler for an element node. |
| 109 | * @param ?Node $node |
| 110 | * @return DOMHandler |
| 111 | */ |
| 112 | public function getDOMHandler( ?Node $node ): DOMHandler { |
| 113 | if ( $node instanceof DocumentFragment ) { |
| 114 | return new BodyHandler(); |
| 115 | } |
| 116 | |
| 117 | if ( !( $node instanceof Element ) ) { |
| 118 | return new DOMHandler(); |
| 119 | } |
| 120 | '@phan-var Element $node';/** @var Element $node */ |
| 121 | |
| 122 | if ( WTUtils::isFirstEncapsulationWrapperNode( $node ) ) { |
| 123 | return new EncapsulatedContentHandler(); |
| 124 | } |
| 125 | |
| 126 | $dp = DOMDataUtils::getDataParsoid( $node ); |
| 127 | |
| 128 | // If available, use a specialized handler for serializing |
| 129 | // to the specialized syntactic form of the tag. |
| 130 | $handler = $this->newFromTagHandler( DOMUtils::nodeName( $node ) . '_' . ( $dp->stx ?? null ) ); |
| 131 | |
| 132 | // Unless a specialized handler is available, use the HTML handler |
| 133 | // for html-stx tags. But, <a> tags should never serialize as HTML. |
| 134 | if ( !$handler && ( $dp->stx ?? null ) === 'html' && DOMUtils::nodeName( $node ) !== 'a' ) { |
| 135 | return new FallbackHTMLHandler(); |
| 136 | } |
| 137 | |
| 138 | // If in a HTML table tag, serialize table tags in the table |
| 139 | // using HTML tags, instead of native wikitext tags. |
| 140 | if ( WTUtils::serializeChildTableTagAsHTML( $node ) ) { |
| 141 | return new FallbackHTMLHandler(); |
| 142 | } |
| 143 | |
| 144 | // If parent node is a list in html-syntax, then serialize |
| 145 | // list content in html-syntax rather than wiki-syntax. |
| 146 | if ( DOMUtils::isListItem( $node ) |
| 147 | && DOMUtils::isList( $node->parentNode ) |
| 148 | && WTUtils::isLiteralHTMLNode( $node->parentNode ) |
| 149 | ) { |
| 150 | return new FallbackHTMLHandler(); |
| 151 | } |
| 152 | |
| 153 | // Pick the best available handler |
| 154 | return $handler ?: $this->newFromTagHandler( DOMUtils::nodeName( $node ) ) ?: new FallbackHTMLHandler(); |
| 155 | } |
| 156 | |
| 157 | } |