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MathFormatter.php
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MathFormatter.php
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<?php
namespace MediaWiki\Extension\Math;
use DataValues\StringValue;
use InvalidArgumentException;
use MediaWiki\Html\Html;
use ValueFormatters\ValueFormatter;
use Wikibase\Lib\Formatters\SnakFormatter;
/**
* Formats the tex string based on the known formats
* - text/plain: used in the value input field of Wikidata
* - text/x-wiki: wikitext
* - text/html: used in Wikidata to display the value of properties
* Formats can look like this: "text/html; disposition=diff"
* or just "text/plain"
*/
class MathFormatter implements ValueFormatter {
/**
* @var string One of the SnakFormatter::FORMAT_... constants.
*/
private $format;
/**
* Loads format to distinguish the type of formatting
*
* @param string $format One of the SnakFormatter::FORMAT_... constants.
*/
public function __construct( $format ) {
$this->format = $format;
}
/**
* @param StringValue $value
*
* @throws InvalidArgumentException if not called with a StringValue
* @return string
*/
public function format( $value ) {
if ( !( $value instanceof StringValue ) ) {
throw new InvalidArgumentException( '$value must be a StringValue' );
}
$tex = $value->getValue();
switch ( $this->format ) {
case SnakFormatter::FORMAT_PLAIN:
return $tex;
case SnakFormatter::FORMAT_WIKI:
return "<math>$tex</math>";
// Intentionally fall back to MathML output in all other, possibly unknown cases.
default:
$renderer = new MathMathML( $tex );
if ( $renderer->checkTeX() && $renderer->render() ) {
$html = $renderer->getHtmlOutput();
} else {
$html = $renderer->getLastError();
}
if ( $this->format === SnakFormatter::FORMAT_HTML_DIFF ) {
$html = $this->formatDetails( $html, $tex );
}
return $html;
}
}
/**
* Constructs a detailed HTML rendering for use in diff views.
*
* @param string $valueHtml
* @param string $tex
*
* @return string HTML
*/
private function formatDetails( $valueHtml, $tex ) {
$html = Html::rawElement( 'h4',
[ 'class' => 'wb-details wb-math-details wb-math-rendered' ],
$valueHtml
);
$html .= Html::rawElement( 'div',
[ 'class' => 'wb-details wb-math-details' ],
Html::element( 'code', [], $tex )
);
return $html;
}
/**
* @return string One of the SnakFormatter::FORMAT_... constants.
*/
public function getFormat() {
return $this->format;
}
}

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text/x-php
Expires
Fri, Jul 3, 21:51 (15 h, 30 m)
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local-disk
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Raw Data
Storage Handle
56/bd/b588831433296d85d66fd76d09dc
Default Alt Text
MathFormatter.php (2 KB)

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