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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\MathSearch\Wikidata\Content; |
| 4 | |
| 5 | use DataValues\StringValue; |
| 6 | use InvalidArgumentException; |
| 7 | use MediaWiki\Extension\Math\MathLaTeXML; |
| 8 | use MediaWiki\Html\Html; |
| 9 | use ValueFormatters\Exceptions\MismatchingDataValueTypeException; |
| 10 | use ValueFormatters\ValueFormatter; |
| 11 | use Wikibase\Lib\Formatters\SnakFormatter; |
| 12 | |
| 13 | /* |
| 14 | * Formats the tex string based on the known formats |
| 15 | * * text/plain: used in the value input field of Wikidata |
| 16 | * * text/x-wiki: wikitext |
| 17 | * * text/html: used in Wikidata to display the value of properties |
| 18 | * Formats can look like this: "text/html; disposition=diff" |
| 19 | * or just "text/plain" |
| 20 | */ |
| 21 | |
| 22 | class ContentMathFormatter implements ValueFormatter { |
| 23 | |
| 24 | /** |
| 25 | * @var string One of the SnakFormatter::FORMAT_... constants. |
| 26 | */ |
| 27 | private $format; |
| 28 | |
| 29 | /** |
| 30 | * Loads format to distinguish the type of formatting |
| 31 | * |
| 32 | * @param string $format One of the SnakFormatter::FORMAT_... constants. |
| 33 | */ |
| 34 | public function __construct( $format ) { |
| 35 | $this->format = $format; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * @param StringValue $value |
| 40 | * |
| 41 | * @return string |
| 42 | * @throws MismatchingDataValueTypeException |
| 43 | */ |
| 44 | public function format( $value ): string { |
| 45 | if ( !( $value instanceof StringValue ) ) { |
| 46 | throw new InvalidArgumentException( '$value must be a StringValue' ); |
| 47 | } |
| 48 | |
| 49 | $tex = $value->getValue(); |
| 50 | |
| 51 | switch ( $this->format ) { |
| 52 | case SnakFormatter::FORMAT_PLAIN: |
| 53 | return $tex; |
| 54 | case SnakFormatter::FORMAT_WIKI: |
| 55 | return "<math>$tex</math>"; |
| 56 | default: |
| 57 | $renderer = new MathLaTeXML( $tex ); |
| 58 | |
| 59 | if ( $renderer->checkTeX() && $renderer->render() ) { |
| 60 | $html = $renderer->getHtmlOutput(); |
| 61 | $renderer->writeCache(); |
| 62 | } else { |
| 63 | $html = $renderer->getLastError(); |
| 64 | } |
| 65 | |
| 66 | if ( $this->format === SnakFormatter::FORMAT_HTML_DIFF ) { |
| 67 | $html = $this->formatDetails( $html, $tex ); |
| 68 | } |
| 69 | |
| 70 | // TeX string is not valid or rendering failed |
| 71 | return $html; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Constructs a detailed HTML rendering for use in diff views. |
| 77 | * |
| 78 | * @param string $valueHtml |
| 79 | * @param string $tex |
| 80 | * |
| 81 | * @return string HTML |
| 82 | */ |
| 83 | private function formatDetails( $valueHtml, $tex ) { |
| 84 | $html = ''; |
| 85 | $html .= Html::rawElement( 'h4', |
| 86 | [ 'class' => 'wb-details wb-math-details wb-math-rendered' ], |
| 87 | $valueHtml |
| 88 | ); |
| 89 | |
| 90 | $html .= Html::rawElement( 'div', |
| 91 | [ 'class' => 'wb-details wb-math-details' ], |
| 92 | Html::element( 'code', [], $tex ) |
| 93 | ); |
| 94 | |
| 95 | return $html; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * @return string One of the SnakFormatter::FORMAT_... constants. |
| 100 | */ |
| 101 | public function getFormat() { |
| 102 | return $this->format; |
| 103 | } |
| 104 | |
| 105 | } |