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| 1 | <?php |
| 2 | /** |
| 3 | * MediaWiki math extension |
| 4 | * |
| 5 | * @copyright 2002-2012 Tomasz Wegrzanowski, Brion Vibber, Moritz Schubotz and other MediaWiki |
| 6 | * contributors |
| 7 | * @license GPL-2.0-or-later |
| 8 | * |
| 9 | * Contains everything related to <math> </math> parsing |
| 10 | * @file |
| 11 | */ |
| 12 | |
| 13 | namespace MediaWiki\Extension\Math; |
| 14 | |
| 15 | use LogicException; |
| 16 | use MediaWiki\Html\Html; |
| 17 | |
| 18 | /** |
| 19 | * Takes LaTeX fragments and outputs the source directly to the browser |
| 20 | * |
| 21 | * @author Tomasz Wegrzanowski |
| 22 | * @author Brion Vibber |
| 23 | * @author Moritz Schubotz |
| 24 | * @ingroup Parser |
| 25 | */ |
| 26 | class MathSource extends MathRenderer { |
| 27 | /** |
| 28 | * @param string $tex |
| 29 | * @param array $params |
| 30 | */ |
| 31 | public function __construct( $tex = '', $params = [] ) { |
| 32 | parent::__construct( $tex, $params ); |
| 33 | $this->setMode( MathConfig::MODE_SOURCE ); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Renders TeX by outputting it to the browser in a span tag |
| 38 | * |
| 39 | * @return string span tag with TeX |
| 40 | */ |
| 41 | public function getHtmlOutput() { |
| 42 | # No need to render or parse anything more! |
| 43 | # New lines are replaced with spaces, which avoids confusing our parser (bugs 23190, 22818) |
| 44 | if ( $this->getMathStyle() == 'display' ) { |
| 45 | $class = 'mwe-math-fallback-source-display'; |
| 46 | } else { |
| 47 | $class = 'mwe-math-fallback-source-inline'; |
| 48 | } |
| 49 | return Html::element( 'span', |
| 50 | $this->getAttributes( |
| 51 | 'span', |
| 52 | [ |
| 53 | // the former class name was 'tex' |
| 54 | // for backwards compatibility we keep this classname T348938 |
| 55 | 'class' => $class . ' tex', |
| 56 | 'dir' => 'ltr' |
| 57 | ] |
| 58 | ), |
| 59 | '$ ' . str_replace( "\n", " ", $this->getTex() ) . ' $' |
| 60 | ); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @throws LogicException always |
| 65 | * @return never |
| 66 | */ |
| 67 | protected function getMathTableName() { |
| 68 | throw new LogicException( 'in math source mode no database caching should happen' ); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * No rendering required in plain text mode |
| 73 | * @return bool |
| 74 | */ |
| 75 | public function render() { |
| 76 | // assume unchanged to avoid unnecessary database access |
| 77 | $this->changed = false; |
| 78 | return true; |
| 79 | } |
| 80 | } |