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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\EditPage; |
| 4 | |
| 5 | use MediaWiki\Context\RequestContext; |
| 6 | use MediaWiki\Page\PageIdentity; |
| 7 | use MediaWiki\Permissions\Authority; |
| 8 | use MediaWiki\SpecialPage\SpecialPageFactory; |
| 9 | use MediaWiki\Specials\SpecialMyLanguage; |
| 10 | use MediaWiki\Title\Title; |
| 11 | |
| 12 | /** |
| 13 | * Helper methods for resolving EditPage parameters that deal with page titles. |
| 14 | * |
| 15 | * @internal |
| 16 | * @property SpecialPageFactory $specialPageFactory |
| 17 | */ |
| 18 | trait ParametersHelper { |
| 19 | |
| 20 | /** |
| 21 | * If the given Title is Special:MyLanguage/Foo, resolve the language chain for the |
| 22 | * actual target title desired. |
| 23 | * |
| 24 | * @param ?Title $title |
| 25 | * @return ?Title |
| 26 | */ |
| 27 | private function getTargetTitleIfSpecialMyLanguage( ?Title $title ): ?Title { |
| 28 | if ( $title && $title->isSpecialPage() ) { |
| 29 | [ $spName, $spParam ] = $this->specialPageFactory->resolveAlias( $title->getText() ); |
| 30 | if ( $spName ) { |
| 31 | $specialPage = $this->specialPageFactory->getPage( $spName ); |
| 32 | if ( $specialPage instanceof SpecialMyLanguage ) { |
| 33 | // TODO This should pass a language as a parameter, instead of the whole context |
| 34 | $specialPage->setContext( RequestContext::getMain() ); |
| 35 | $title = $specialPage->findTitleForTransclusion( $spParam ); |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | return $title; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Verify if a given title exists and the given user is allowed to view it |
| 45 | * |
| 46 | * @param PageIdentity|null $page |
| 47 | * @param Authority $performer |
| 48 | * @return bool |
| 49 | * @phan-assert-true-condition $page |
| 50 | */ |
| 51 | private function isPageExistingAndViewable( ?PageIdentity $page, Authority $performer ): bool { |
| 52 | return $page && $page->exists() && $performer->authorizeRead( 'read', $page ); |
| 53 | } |
| 54 | } |