SpecialPageData.php

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<?php
namespace MediaWiki\Specials;
 
use HttpError;
use MediaWiki\LinkedData\PageDataRequestHandler;
use MediaWiki\SpecialPage\UnlistedSpecialPage;
 
class SpecialPageData extends UnlistedSpecialPage {
 
    private $requestHandler = null;
 
    public function __construct() {
        parent::__construct( 'PageData' );
    }
 
    public function setRequestHandler( PageDataRequestHandler $requestHandler ) {
        $this->requestHandler = $requestHandler;
    }
 
    protected function initDependencies() {
        if ( $this->requestHandler === null ) {
            $this->requestHandler = $this->newDefaultRequestHandler();
        }
    }
 
    private function newDefaultRequestHandler() {
        return new PageDataRequestHandler();
    }
 
    public function execute( $subPage ) {
        $this->initDependencies();
 
        // If there is no title, show an HTML form
        // TODO: Don't do this if HTML is not acceptable according to HTTP headers.
        if ( !$this->requestHandler->canHandleRequest( $subPage, $this->getRequest() ) ) {
            $this->showForm();
            return;
        }
 
        $this->requestHandler->handleRequest( $subPage, $this->getRequest(), $this->getOutput() );
    }
 
    public function showForm() {
        $this->getOutput()->showErrorPage( 'pagedata-title', 'pagedata-text' );
    }
}
 
class_alias( SpecialPageData::class, 'SpecialPageData' );