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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | * @author Kunal Mehta <legoktm@debian.org> |
| 20 | */ |
| 21 | namespace MediaWiki\Linker; |
| 22 | |
| 23 | use HtmlArmor; |
| 24 | use Language; |
| 25 | use MediaWiki\Cache\LinkCache; |
| 26 | use MediaWiki\Config\ServiceOptions; |
| 27 | use MediaWiki\HookContainer\HookContainer; |
| 28 | use MediaWiki\HookContainer\HookRunner; |
| 29 | use MediaWiki\Html\Html; |
| 30 | use MediaWiki\Page\PageReference; |
| 31 | use MediaWiki\Parser\Sanitizer; |
| 32 | use MediaWiki\SpecialPage\SpecialPageFactory; |
| 33 | use MediaWiki\Title\Title; |
| 34 | use MediaWiki\Title\TitleFormatter; |
| 35 | use MediaWiki\Title\TitleValue; |
| 36 | use Wikimedia\Assert\Assert; |
| 37 | |
| 38 | /** |
| 39 | * Class that generates HTML for internal links. |
| 40 | * See the Linker class for other kinds of links. |
| 41 | * |
| 42 | * @see https://www.mediawiki.org/wiki/Manual:LinkRenderer |
| 43 | * @since 1.28 |
| 44 | */ |
| 45 | class LinkRenderer { |
| 46 | |
| 47 | public const CONSTRUCTOR_OPTIONS = [ |
| 48 | 'renderForComment', |
| 49 | ]; |
| 50 | |
| 51 | /** |
| 52 | * Whether to force the pretty article path |
| 53 | * |
| 54 | * @var bool |
| 55 | */ |
| 56 | private $forceArticlePath = false; |
| 57 | |
| 58 | /** |
| 59 | * A PROTO_* constant or false |
| 60 | * |
| 61 | * @var string|bool|int |
| 62 | */ |
| 63 | private $expandUrls = false; |
| 64 | |
| 65 | /** |
| 66 | * Whether links are being rendered for comments. |
| 67 | * |
| 68 | * @var bool |
| 69 | */ |
| 70 | private $comment = false; |
| 71 | |
| 72 | /** |
| 73 | * @var TitleFormatter |
| 74 | */ |
| 75 | private $titleFormatter; |
| 76 | |
| 77 | /** |
| 78 | * @var LinkCache |
| 79 | */ |
| 80 | private $linkCache; |
| 81 | |
| 82 | /** @var HookRunner */ |
| 83 | private $hookRunner; |
| 84 | |
| 85 | /** |
| 86 | * @var SpecialPageFactory |
| 87 | */ |
| 88 | private $specialPageFactory; |
| 89 | |
| 90 | /** |
| 91 | * @internal For use by LinkRendererFactory |
| 92 | * |
| 93 | * @param TitleFormatter $titleFormatter |
| 94 | * @param LinkCache $linkCache |
| 95 | * @param SpecialPageFactory $specialPageFactory |
| 96 | * @param HookContainer $hookContainer |
| 97 | * @param ServiceOptions $options |
| 98 | */ |
| 99 | public function __construct( |
| 100 | TitleFormatter $titleFormatter, |
| 101 | LinkCache $linkCache, |
| 102 | SpecialPageFactory $specialPageFactory, |
| 103 | HookContainer $hookContainer, |
| 104 | ServiceOptions $options |
| 105 | ) { |
| 106 | $options->assertRequiredOptions( self::CONSTRUCTOR_OPTIONS ); |
| 107 | $this->comment = $options->get( 'renderForComment' ); |
| 108 | |
| 109 | $this->titleFormatter = $titleFormatter; |
| 110 | $this->linkCache = $linkCache; |
| 111 | $this->specialPageFactory = $specialPageFactory; |
| 112 | $this->hookRunner = new HookRunner( $hookContainer ); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Whether to force the link to use the article path ($wgArticlePath) even if |
| 117 | * a query string is present, resulting in URLs like /wiki/Main_Page?action=foobar. |
| 118 | * |
| 119 | * @param bool $force |
| 120 | */ |
| 121 | public function setForceArticlePath( $force ) { |
| 122 | $this->forceArticlePath = $force; |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * @return bool |
| 127 | * @see setForceArticlePath() |
| 128 | */ |
| 129 | public function getForceArticlePath() { |
| 130 | return $this->forceArticlePath; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Whether/how to expand URLs. |
| 135 | * |
| 136 | * @param string|bool|int $expand A PROTO_* constant or false for no expansion |
| 137 | * @see UrlUtils::expand() |
| 138 | */ |
| 139 | public function setExpandURLs( $expand ) { |
| 140 | $this->expandUrls = $expand; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * @return string|bool|int a PROTO_* constant or false for no expansion |
| 145 | * @see setExpandURLs() |
| 146 | */ |
| 147 | public function getExpandURLs() { |
| 148 | return $this->expandUrls; |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * True when the links will be rendered in an edit summary or log comment. |
| 153 | * |
| 154 | * @return bool |
| 155 | */ |
| 156 | public function isForComment(): bool { |
| 157 | // This option only exists to power a hack in Wikibase's onHtmlPageLinkRendererEnd hook. |
| 158 | return $this->comment; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Render a wikilink. |
| 163 | * Will call makeKnownLink() or makeBrokenLink() as appropriate. |
| 164 | * |
| 165 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 166 | * @param-taint $target none |
| 167 | * @param string|HtmlArmor|null $text Text that the user can click on to visit the link. |
| 168 | * @param-taint $text escapes_html |
| 169 | * @param array $extraAttribs Attributes you would like to add to the <a> tag. For example, if |
| 170 | * you would like to add title="Text when hovering!", you would set this to [ 'title' => 'Text |
| 171 | * when hovering!' ] |
| 172 | * @param-taint $extraAttribs none |
| 173 | * @param array $query Parameters you would like to add to the URL. For example, if you would |
| 174 | * like to add ?redirect=no&debug=1, you would set this to [ 'redirect' => 'no', 'debug' => '1' ] |
| 175 | * @param-taint $query none |
| 176 | * @return string HTML |
| 177 | * @return-taint escaped |
| 178 | */ |
| 179 | public function makeLink( |
| 180 | $target, $text = null, array $extraAttribs = [], array $query = [] |
| 181 | ) { |
| 182 | Assert::parameterType( [ LinkTarget::class, PageReference::class ], $target, '$target' ); |
| 183 | if ( $this->castToTitle( $target )->isKnown() ) { |
| 184 | return $this->makeKnownLink( $target, $text, $extraAttribs, $query ); |
| 185 | } else { |
| 186 | return $this->makeBrokenLink( $target, $text, $extraAttribs, $query ); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | private function runBeginHook( $target, &$text, &$extraAttribs, &$query ) { |
| 191 | $ret = null; |
| 192 | if ( !$this->hookRunner->onHtmlPageLinkRendererBegin( |
| 193 | // @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args |
| 194 | $this, $this->castToTitle( $target ), $text, $extraAttribs, $query, $ret ) |
| 195 | ) { |
| 196 | return $ret; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Make a link that's styled as if the target page exists (a "blue link"), with a specified |
| 202 | * class attribute. |
| 203 | * |
| 204 | * Usually you should use makeLink() or makeKnownLink() instead, which will select the CSS |
| 205 | * classes automatically. Use this method if the exact styling doesn't matter and you want |
| 206 | * to ensure no extra DB lookup happens, e.g. for links generated by the skin. |
| 207 | * |
| 208 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 209 | * @param-taint $target none |
| 210 | * @param string|HtmlArmor|null $text Text that the user can click on to visit the link. |
| 211 | * @param-taint $text escapes_html |
| 212 | * @param string $classes CSS classes to add |
| 213 | * @param-taint $classes none |
| 214 | * @param array $extraAttribs Attributes you would like to add to the <a> tag. For example, if |
| 215 | * you would like to add title="Text when hovering!", you would set this to [ 'title' => 'Text |
| 216 | * when hovering!' ] |
| 217 | * @param-taint $extraAttribs none |
| 218 | * @param array $query Parameters you would like to add to the URL. For example, if you would |
| 219 | * like to add ?redirect=no&debug=1, you would set this to [ 'redirect' => 'no', 'debug' => '1' ] |
| 220 | * @param-taint $query none |
| 221 | * @return string |
| 222 | * @return-taint escaped |
| 223 | */ |
| 224 | public function makePreloadedLink( |
| 225 | $target, $text = null, $classes = '', array $extraAttribs = [], array $query = [] |
| 226 | ) { |
| 227 | Assert::parameterType( [ LinkTarget::class, PageReference::class ], $target, '$target' ); |
| 228 | |
| 229 | // Run begin hook |
| 230 | $ret = $this->runBeginHook( $target, $text, $extraAttribs, $query ); |
| 231 | if ( $ret !== null ) { |
| 232 | return $ret; |
| 233 | } |
| 234 | $target = $this->normalizeTarget( $target ); |
| 235 | $url = $this->getLinkURL( $target, $query ); |
| 236 | $attribs = [ 'class' => $classes ]; |
| 237 | $prefixedText = $this->titleFormatter->getPrefixedText( $target ); |
| 238 | if ( $prefixedText !== '' ) { |
| 239 | $attribs['title'] = $prefixedText; |
| 240 | } |
| 241 | |
| 242 | $attribs = [ |
| 243 | 'href' => $url, |
| 244 | ] + $this->mergeAttribs( $attribs, $extraAttribs ); |
| 245 | |
| 246 | $text ??= $this->getLinkText( $target ); |
| 247 | |
| 248 | return $this->buildAElement( $target, $text, $attribs, true ); |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Make a link that's styled as if the target page exists (usually a "blue link", although the |
| 253 | * styling might depend on e.g. whether the target is a redirect). |
| 254 | * |
| 255 | * This will result in a DB lookup if the title wasn't cached yet. If you want to avoid that, |
| 256 | * and don't care about matching the exact styling of links within page content, you can use |
| 257 | * makePreloadedLink() instead. |
| 258 | * |
| 259 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 260 | * @param-taint $target none |
| 261 | * @param string|HtmlArmor|null $text Text that the user can click on to visit the link. |
| 262 | * @param-taint $text escapes_html |
| 263 | * @param array $extraAttribs Attributes you would like to add to the <a> tag. For example, if |
| 264 | * you would like to add title="Text when hovering!", you would set this to [ 'title' => 'Text |
| 265 | * when hovering!' ] |
| 266 | * @param-taint $extraAttribs none |
| 267 | * @param array $query Parameters you would like to add to the URL. For example, if you would |
| 268 | * like to add ?redirect=no&debug=1, you would set this to [ 'redirect' => 'no', 'debug' => '1' ] |
| 269 | * @param-taint $query none |
| 270 | * @return string HTML |
| 271 | * @return-taint escaped |
| 272 | */ |
| 273 | public function makeKnownLink( |
| 274 | $target, $text = null, array $extraAttribs = [], array $query = [] |
| 275 | ) { |
| 276 | Assert::parameterType( [ LinkTarget::class, PageReference::class ], $target, '$target' ); |
| 277 | if ( $target instanceof LinkTarget ) { |
| 278 | $isExternal = $target->isExternal(); |
| 279 | } else { |
| 280 | // $target instanceof PageReference |
| 281 | // treat all PageReferences as local for now |
| 282 | $isExternal = false; |
| 283 | } |
| 284 | $classes = []; |
| 285 | if ( $isExternal ) { |
| 286 | $classes[] = 'extiw'; |
| 287 | } |
| 288 | $colour = $this->getLinkClasses( $target ); |
| 289 | if ( $colour !== '' ) { |
| 290 | $classes[] = $colour; |
| 291 | } |
| 292 | |
| 293 | return $this->makePreloadedLink( |
| 294 | $target, |
| 295 | $text, |
| 296 | implode( ' ', $classes ), |
| 297 | $extraAttribs, |
| 298 | $query |
| 299 | ); |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Make a link that's styled as if the target page doesn't exist (a "red link"). |
| 304 | * |
| 305 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 306 | * @param-taint $target none |
| 307 | * @param string|HtmlArmor|null $text Text that the user can click on to visit the link. |
| 308 | * @param-taint $text escapes_html |
| 309 | * @param array $extraAttribs Attributes you would like to add to the <a> tag. For example, if |
| 310 | * you would like to add title="Text when hovering!", you would set this to [ 'title' => 'Text |
| 311 | * when hovering!' ] |
| 312 | * @param-taint $extraAttribs none |
| 313 | * @param array $query Parameters you would like to add to the URL. For example, if you would |
| 314 | * like to add ?redirect=no&debug=1, you would set this to [ 'redirect' => 'no', 'debug' => '1' ] |
| 315 | * @param-taint $query none |
| 316 | * @return string |
| 317 | * @return-taint escaped |
| 318 | */ |
| 319 | public function makeBrokenLink( |
| 320 | $target, $text = null, array $extraAttribs = [], array $query = [] |
| 321 | ) { |
| 322 | Assert::parameterType( [ LinkTarget::class, PageReference::class ], $target, '$target' ); |
| 323 | // Run legacy hook |
| 324 | $ret = $this->runBeginHook( $target, $text, $extraAttribs, $query ); |
| 325 | if ( $ret !== null ) { |
| 326 | return $ret; |
| 327 | } |
| 328 | |
| 329 | if ( $target instanceof LinkTarget ) { |
| 330 | # We don't want to include fragments for broken links, because they |
| 331 | # generally make no sense. |
| 332 | if ( $target->hasFragment() ) { |
| 333 | $target = $target->createFragmentTarget( '' ); |
| 334 | } |
| 335 | } |
| 336 | $target = $this->normalizeTarget( $target ); |
| 337 | |
| 338 | if ( !isset( $query['action'] ) && $target->getNamespace() !== NS_SPECIAL ) { |
| 339 | $query['action'] = 'edit'; |
| 340 | $query['redlink'] = '1'; |
| 341 | } |
| 342 | |
| 343 | $url = $this->getLinkURL( $target, $query ); |
| 344 | $attribs = [ 'class' => 'new' ]; |
| 345 | $prefixedText = $this->titleFormatter->getPrefixedText( $target ); |
| 346 | if ( $prefixedText !== '' ) { |
| 347 | // This ends up in parser cache! |
| 348 | $attribs['title'] = wfMessage( 'red-link-title', $prefixedText ) |
| 349 | ->inContentLanguage() |
| 350 | ->text(); |
| 351 | } |
| 352 | |
| 353 | $attribs = [ |
| 354 | 'href' => $url, |
| 355 | ] + $this->mergeAttribs( $attribs, $extraAttribs ); |
| 356 | |
| 357 | $text ??= $this->getLinkText( $target ); |
| 358 | |
| 359 | return $this->buildAElement( $target, $text, $attribs, false ); |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * Return the HTML for the top of a redirect page |
| 364 | * |
| 365 | * Chances are you should just be using the ParserOutput from |
| 366 | * WikitextContent::getParserOutput (which will have this header added |
| 367 | * automatically) instead of calling this for redirects. |
| 368 | * |
| 369 | * If creating your own redirect-alike, please use return value of |
| 370 | * this method to set the 'core:redirect-header' extension data field |
| 371 | * in your ParserOutput, rather than concatenating HTML directly. |
| 372 | * See WikitextContentHandler::fillParserOutput(). |
| 373 | * |
| 374 | * @since 1.41 |
| 375 | * @param Language $lang |
| 376 | * @param Title $target Destination to redirect |
| 377 | * @param bool $forceKnown Should the image be shown as a bluelink regardless of existence? |
| 378 | * @return string Containing HTML with redirect link |
| 379 | */ |
| 380 | public function makeRedirectHeader( Language $lang, Title $target, bool $forceKnown = false ) { |
| 381 | $html = '<ul class="redirectText">'; |
| 382 | if ( $forceKnown ) { |
| 383 | $link = $this->makeKnownLink( |
| 384 | $target, |
| 385 | $target->getFullText(), |
| 386 | [], |
| 387 | // Make sure wiki page redirects are not followed |
| 388 | $target->isRedirect() ? [ 'redirect' => 'no' ] : [] |
| 389 | ); |
| 390 | } else { |
| 391 | $link = $this->makeLink( |
| 392 | $target, |
| 393 | $target->getFullText(), |
| 394 | [], |
| 395 | // Make sure wiki page redirects are not followed |
| 396 | $target->isRedirect() ? [ 'redirect' => 'no' ] : [] |
| 397 | ); |
| 398 | } |
| 399 | |
| 400 | $redirectToText = wfMessage( 'redirectto' )->inLanguage( $lang )->escaped(); |
| 401 | |
| 402 | return Html::rawElement( |
| 403 | 'div', [ 'class' => 'redirectMsg' ], |
| 404 | Html::rawElement( 'p', [], $redirectToText ) . |
| 405 | Html::rawElement( 'ul', [ 'class' => 'redirectText' ], |
| 406 | Html::rawElement( 'li', [], $link ) ) |
| 407 | ); |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * Builds the final <a> element |
| 412 | * |
| 413 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 414 | * @param-taint $target none |
| 415 | * @param string|HtmlArmor $text |
| 416 | * @param-taint $text escapes_html |
| 417 | * @param array $attribs |
| 418 | * @param-taint $attribs none |
| 419 | * @param bool $isKnown |
| 420 | * @param-taint $isKnown none |
| 421 | * @return null|string |
| 422 | * @return-taint escaped |
| 423 | */ |
| 424 | private function buildAElement( $target, $text, array $attribs, $isKnown ) { |
| 425 | $ret = null; |
| 426 | if ( !$this->hookRunner->onHtmlPageLinkRendererEnd( |
| 427 | // @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args |
| 428 | $this, $this->castToLinkTarget( $target ), $isKnown, $text, $attribs, $ret ) |
| 429 | ) { |
| 430 | return $ret; |
| 431 | } |
| 432 | |
| 433 | return Html::rawElement( 'a', $attribs, HtmlArmor::getHtml( $text ) ); |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 438 | * @return string |
| 439 | */ |
| 440 | private function getLinkText( $target ) { |
| 441 | $prefixedText = $this->titleFormatter->getPrefixedText( $target ); |
| 442 | // If the target is just a fragment, with no title, we return the fragment |
| 443 | // text. Otherwise, we return the title text itself. |
| 444 | if ( $prefixedText === '' && $target instanceof LinkTarget && $target->hasFragment() ) { |
| 445 | return $target->getFragment(); |
| 446 | } |
| 447 | |
| 448 | return $prefixedText; |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 453 | * @param array $query Parameters you would like to add to the URL. For example, if you would |
| 454 | * like to add ?redirect=no&debug=1, you would set this to [ 'redirect' => 'no', 'debug' => '1' ] |
| 455 | * @return string non-escaped text |
| 456 | */ |
| 457 | private function getLinkURL( $target, $query = [] ) { |
| 458 | if ( $this->forceArticlePath ) { |
| 459 | $realQuery = $query; |
| 460 | $query = []; |
| 461 | } else { |
| 462 | $realQuery = []; |
| 463 | } |
| 464 | $url = $this->castToTitle( $target )->getLinkURL( $query, false, $this->expandUrls ); |
| 465 | |
| 466 | if ( $this->forceArticlePath && $realQuery ) { |
| 467 | $url = wfAppendQuery( $url, $realQuery ); |
| 468 | } |
| 469 | |
| 470 | return $url; |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * Normalizes the provided target |
| 475 | * |
| 476 | * @internal For use by Linker::getImageLinkMTOParams() |
| 477 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 478 | * @return LinkTarget |
| 479 | */ |
| 480 | public function normalizeTarget( $target ) { |
| 481 | $target = $this->castToLinkTarget( $target ); |
| 482 | if ( $target->getNamespace() === NS_SPECIAL && !$target->isExternal() ) { |
| 483 | [ $name, $subpage ] = $this->specialPageFactory->resolveAlias( |
| 484 | $target->getDBkey() |
| 485 | ); |
| 486 | if ( $name ) { |
| 487 | return new TitleValue( |
| 488 | NS_SPECIAL, |
| 489 | $this->specialPageFactory->getLocalNameFor( $name, $subpage ), |
| 490 | $target->getFragment() |
| 491 | ); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | return $target; |
| 496 | } |
| 497 | |
| 498 | /** |
| 499 | * Merges two sets of attributes |
| 500 | * |
| 501 | * @param array $defaults |
| 502 | * @param array $attribs |
| 503 | * |
| 504 | * @return array |
| 505 | */ |
| 506 | private function mergeAttribs( $defaults, $attribs ) { |
| 507 | if ( !$attribs ) { |
| 508 | return $defaults; |
| 509 | } |
| 510 | # Merge the custom attribs with the default ones, and iterate |
| 511 | # over that, deleting all "false" attributes. |
| 512 | $ret = []; |
| 513 | $merged = Sanitizer::mergeAttributes( $defaults, $attribs ); |
| 514 | foreach ( $merged as $key => $val ) { |
| 515 | # A false value suppresses the attribute |
| 516 | if ( $val !== false ) { |
| 517 | $ret[$key] = $val; |
| 518 | } |
| 519 | } |
| 520 | return $ret; |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * Returns CSS classes to add to a known link. |
| 525 | * |
| 526 | * Note that most CSS classes set on wikilinks are actually handled elsewhere (e.g. in |
| 527 | * makeKnownLink() or in LinkHolderArray). |
| 528 | * |
| 529 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 530 | * @return string CSS class |
| 531 | */ |
| 532 | public function getLinkClasses( $target ) { |
| 533 | Assert::parameterType( [ LinkTarget::class, PageReference::class ], $target, '$target' ); |
| 534 | $target = $this->castToLinkTarget( $target ); |
| 535 | // Don't call LinkCache if the target is "non-proper" |
| 536 | if ( $target->isExternal() || $target->getText() === '' || $target->getNamespace() < 0 ) { |
| 537 | return ''; |
| 538 | } |
| 539 | // Make sure the target is in the cache |
| 540 | $id = $this->linkCache->addLinkObj( $target ); |
| 541 | if ( $id == 0 ) { |
| 542 | // Doesn't exist |
| 543 | return ''; |
| 544 | } |
| 545 | |
| 546 | if ( $this->linkCache->getGoodLinkFieldObj( $target, 'redirect' ) ) { |
| 547 | # Page is a redirect |
| 548 | return 'mw-redirect'; |
| 549 | } |
| 550 | |
| 551 | return ''; |
| 552 | } |
| 553 | |
| 554 | /** |
| 555 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 556 | * @return Title |
| 557 | */ |
| 558 | private function castToTitle( $target ): Title { |
| 559 | if ( $target instanceof LinkTarget ) { |
| 560 | return Title::newFromLinkTarget( $target ); |
| 561 | } |
| 562 | // $target instanceof PageReference |
| 563 | return Title::newFromPageReference( $target ); |
| 564 | } |
| 565 | |
| 566 | /** |
| 567 | * @param LinkTarget|PageReference $target Page that will be visited when the user clicks on the link. |
| 568 | * @return LinkTarget |
| 569 | */ |
| 570 | private function castToLinkTarget( $target ): LinkTarget { |
| 571 | if ( $target instanceof PageReference ) { |
| 572 | return Title::newFromPageReference( $target ); |
| 573 | } |
| 574 | // $target instanceof LinkTarget |
| 575 | return $target; |
| 576 | } |
| 577 | } |