SkinComponentRegistry.php

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<?php
namespace MediaWiki\Skin;
 
use RuntimeException;
use SpecialPage;
 
class SkinComponentRegistry {
    private $components = null;
 
    private $skinContext;
 
    public function __construct( SkinComponentRegistryContext $skinContext ) {
        $this->skinContext = $skinContext;
    }
 
    public function getComponent( string $name ): SkinComponent {
        if ( $this->components === null ) {
            $this->registerComponents();
        }
        $component = $this->components[$name] ?? null;
        if ( !$component ) {
            throw new RuntimeException( 'Unknown component: ' . $name );
        }
        return $component;
    }
 
    public function getComponents() {
        if ( $this->components === null ) {
            $this->registerComponents();
        }
        return $this->components;
    }
 
    private function registerComponent( string $name ) {
        $skin = $this->skinContext;
        $user = $skin->getUser();
        switch ( $name ) {
            case 'logos':
                $component = new SkinComponentLogo(
                    $skin->getConfig(),
                    $skin->getLanguage()
                );
                break;
            case 'search-box':
                $component = new SkinComponentSearch(
                    $skin->getConfig(),
                    $user,
                    $skin->getMessageLocalizer(),
                    SpecialPage::newSearchPage( $user ),
                    $skin->getRelevantTitle()
                );
                break;
            case 'toc':
                $component = new SkinComponentTableOfContents(
                    $skin->getOutput()
                );
                break;
            default:
                throw new RuntimeException( 'Unknown component: ' . $name );
        }
        $this->components[$name] = $component;
    }
 
    private function registerComponents() {
        $this->registerComponent( 'logos' );
        $this->registerComponent( 'toc' );
        $this->registerComponent( 'search-box' );
    }
}