PageRestriction.php

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<?php
namespace MediaWiki\Block\Restriction;

class PageRestriction extends AbstractRestriction {

    const TYPE = 'page';

    const TYPE_ID = 1;

    protected $title;

    public function matches( \Title $title ) {
        if ( !$this->getTitle() ) {
            return false;
        }

        return $title->equals( $this->getTitle() );
    }

    public function setTitle( \Title $title ) {
        $this->title = $title;

        return $this;
    }

    public function getTitle() {
        if ( $this->title === null ) {
            $this->title = \Title::newFromID( $this->value );

            // If the title does not exist, set to false to prevent multiple database
            // queries.
            if ( $this->title === null ) {
                $this->title = false;
            }
        }

        return $this->title ?? null;
    }

    public static function newFromRow( \stdClass $row ) {
        $restriction = parent::newFromRow( $row );

        // If the page_namespace and the page_title were provided, add the title to
        // the restriction.
        if ( isset( $row->page_namespace ) && isset( $row->page_title ) ) {
            // Clone the row so it is not mutated.
            $row = clone $row;
            $row->page_id = $row->ir_value;
            $title = \Title::newFromRow( $row );
            $restriction->setTitle( $title );
        }

        return $restriction;
    }
}