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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Language\ReplacementArray; |
| 4 | use MediaWiki\MediaWikiServices; |
| 5 | use MediaWiki\Output\OutputPage; |
| 6 | use MediaWiki\Parser\Parser; |
| 7 | use MediaWiki\Parser\ParserOutput; |
| 8 | use MediaWiki\Parser\PPFrame; |
| 9 | use MediaWiki\Title\Title; |
| 10 | |
| 11 | class LqtParserFunctions { |
| 12 | |
| 13 | private const LQT_REPLACEMENTS_DATA_KEY = 'liquidthreads_replacements'; |
| 14 | |
| 15 | public static function useLiquidThreads( Parser $parser, $param = '1' ) { |
| 16 | $offParams = [ 'no', 'off', 'disable' ]; |
| 17 | // Figure out if they want to turn it off or on. |
| 18 | $param = trim( strtolower( $param ) ); |
| 19 | |
| 20 | if ( in_array( $param, $offParams ) || !$param ) { |
| 21 | $param = '0'; |
| 22 | } else { |
| 23 | $param = '1'; |
| 24 | } |
| 25 | |
| 26 | $parser->getOutput()->setUnsortedPageProperty( 'use-liquid-threads', $param ); |
| 27 | } |
| 28 | |
| 29 | public static function lqtPageLimit( Parser $parser, $param = null ) { |
| 30 | if ( $param && $param > 0 ) { |
| 31 | $parser->getOutput()->setUnsortedPageProperty( 'lqt-page-limit', $param ); |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Adds $data under $text key to ParserOutput $out extension data |
| 37 | * LQT_REPLACEMENTS_DATA_KEY property. |
| 38 | * |
| 39 | * @param ParserOutput $pout |
| 40 | * @param string $text |
| 41 | * @param array $data |
| 42 | */ |
| 43 | private static function addToExtensionData( ParserOutput $pout, string $text, array $data ) { |
| 44 | $lqtReplacements = $pout->getExtensionData( self::LQT_REPLACEMENTS_DATA_KEY ) ?? []; |
| 45 | $lqtReplacements[$text] = $data; |
| 46 | $pout->setExtensionData( self::LQT_REPLACEMENTS_DATA_KEY, $lqtReplacements ); |
| 47 | } |
| 48 | |
| 49 | /** To bypass the parser cache just for the LiquidThreads part, we have a cute trick. |
| 50 | * We leave a placeholder comment in the HTML, which we expand out in a hook. This way, |
| 51 | * most of the page can be cached, but the LiquidThreads dynamism still works. |
| 52 | * Thanks to Tim for the idea. |
| 53 | * @param string $content |
| 54 | * @param array $args |
| 55 | * @param Parser $parser |
| 56 | * @param PPFrame $frame |
| 57 | * @return string |
| 58 | */ |
| 59 | public static function lqtTalkPage( $content, $args, $parser, $frame ) { |
| 60 | $pout = $parser->getOutput(); |
| 61 | |
| 62 | // Prepare information. |
| 63 | $title = null; |
| 64 | if ( !empty( $args['talkpage'] ) ) { |
| 65 | $title = Title::newFromText( $args['talkpage'] ); |
| 66 | } |
| 67 | $title ??= $parser->getTitle(); |
| 68 | |
| 69 | $talkpage = new Article( $title, 0 ); |
| 70 | $article = new Article( $parser->getTitle(), 0 ); |
| 71 | |
| 72 | $data = [ |
| 73 | 'type' => 'talkpage', |
| 74 | 'args' => $args, |
| 75 | 'article' => $article, |
| 76 | 'title' => $article->getTitle(), |
| 77 | 'talkpage' => $talkpage, |
| 78 | ]; |
| 79 | |
| 80 | // Generate a token |
| 81 | $tok = MWCryptRand::generateHex( 32 ); |
| 82 | $text = '<!--LQT-PAGE-' . $tok . '-->'; |
| 83 | self::addToExtensionData( $pout, $text, $data ); |
| 84 | return $text; |
| 85 | } |
| 86 | |
| 87 | public static function lqtThread( $content, $args, $parser, $frame ) { |
| 88 | $pout = $parser->getOutput(); |
| 89 | |
| 90 | // Prepare information. |
| 91 | $title = Title::newFromText( $args['thread'] ); |
| 92 | $thread = null; |
| 93 | if ( $args['thread'] ) { |
| 94 | if ( is_numeric( $args['thread'] ) ) { |
| 95 | $thread = Threads::withId( $args['thread'] ); |
| 96 | } elseif ( $title ) { |
| 97 | $thread = Threads::withRoot( |
| 98 | MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $title ) |
| 99 | ); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | if ( $thread === null ) { |
| 104 | return ''; |
| 105 | } |
| 106 | |
| 107 | $data = [ |
| 108 | 'type' => 'thread', |
| 109 | 'args' => $args, |
| 110 | 'thread' => $thread->id(), |
| 111 | 'title' => $thread->title(), |
| 112 | ]; |
| 113 | |
| 114 | // Generate a token |
| 115 | $tok = MWCryptRand::generateHex( 32 ); |
| 116 | $text = '<!--LQT-THREAD-' . $tok . '-->'; |
| 117 | self::addToExtensionData( $pout, $text, $data ); |
| 118 | return $text; |
| 119 | } |
| 120 | |
| 121 | private static function runLqtTalkPage( $details, OutputPage $out ) { |
| 122 | $title = $details["title"]; |
| 123 | $article = $details["article"]; |
| 124 | $talkpage = $details["talkpage"]; |
| 125 | $args = $details["args"]; |
| 126 | |
| 127 | global $wgRequest; |
| 128 | $oldOut = $out->getHTML(); |
| 129 | $out->clearHTML(); |
| 130 | |
| 131 | $user = $out->getUser(); |
| 132 | $view = new TalkpageView( $out, $article, $title, $user, $wgRequest ); |
| 133 | $view->setTalkPage( $talkpage ); |
| 134 | |
| 135 | // Handle show/hide preferences. Header gone by default. |
| 136 | $view->hideItems( 'header' ); |
| 137 | |
| 138 | if ( array_key_exists( 'show', $args ) ) { |
| 139 | $show = explode( ' ', $args['show'] ); |
| 140 | $view->setShownItems( $show ); |
| 141 | } |
| 142 | |
| 143 | $view->show(); |
| 144 | |
| 145 | $html = $out->getHTML(); |
| 146 | $out->clearHTML(); |
| 147 | |
| 148 | return $html; |
| 149 | } |
| 150 | |
| 151 | private static function showLqtThread( $details, OutputPage $out ) { |
| 152 | $title = $details["title"]; |
| 153 | $article = $details["article"]; |
| 154 | |
| 155 | global $wgRequest; |
| 156 | $oldOut = $out->getHTML(); |
| 157 | $out->clearHTML(); |
| 158 | |
| 159 | $thread = Threads::withRoot( MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $title ) ); |
| 160 | |
| 161 | $user = $out->getUser(); |
| 162 | $view = new LqtView( $out, $article, $title, $user, $wgRequest ); |
| 163 | |
| 164 | $view->showThread( $thread ); |
| 165 | |
| 166 | $html = $out->getHTML(); |
| 167 | $out->clearHTML(); |
| 168 | |
| 169 | return $html; |
| 170 | } |
| 171 | |
| 172 | public static function onAddParserOutput( OutputPage $out, ParserOutput $pout ) { |
| 173 | if ( !$pout->getExtensionData( self::LQT_REPLACEMENTS_DATA_KEY ) ) { |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | if ( !isset( $out->mLqtReplacements ) ) { |
| 178 | $out->mLqtReplacements = []; |
| 179 | } |
| 180 | |
| 181 | $lqtReplacements = $pout->getExtensionData( self::LQT_REPLACEMENTS_DATA_KEY ); |
| 182 | foreach ( $lqtReplacements as $text => $details ) { |
| 183 | $result = ''; |
| 184 | |
| 185 | if ( !is_array( $details ) ) { |
| 186 | continue; |
| 187 | } |
| 188 | |
| 189 | if ( $details['type'] == 'talkpage' ) { |
| 190 | $result = self::runLqtTalkPage( $details, $out ); |
| 191 | } elseif ( $details['type'] == 'thread' ) { |
| 192 | $result = self::showLqtThread( $details, $out ); |
| 193 | } |
| 194 | |
| 195 | $out->mLqtReplacements[$text] = $result; |
| 196 | $out->addModules( 'ext.liquidThreads' ); |
| 197 | } |
| 198 | |
| 199 | return true; |
| 200 | } |
| 201 | |
| 202 | public static function onAddHTML( OutputPage $out, &$text ) { |
| 203 | if ( !isset( $out->mLqtReplacements ) || !count( $out->mLqtReplacements ) ) { |
| 204 | return true; |
| 205 | } |
| 206 | |
| 207 | $replacements = $out->mLqtReplacements; |
| 208 | |
| 209 | $replacer = new ReplacementArray( $replacements ); |
| 210 | $text = $replacer->replace( $text ); |
| 211 | |
| 212 | return true; |
| 213 | } |
| 214 | } |