SpecialPreferences.php

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<?php
use MediaWiki\MediaWikiServices;

class SpecialPreferences extends SpecialPage {
    function __construct() {
        parent::__construct( 'Preferences' );
    }

    public function doesWrites() {
        return true;
    }

    public function execute( $par ) {
        $this->setHeaders();
        $this->outputHeader();
        $out = $this->getOutput();
        $out->disallowUserJs(); # Prevent hijacked user scripts from sniffing passwords etc.

        $this->requireLogin( 'prefsnologintext2' );
        $this->checkReadOnly();

        if ( $par == 'reset' ) {
            $this->showResetForm();

            return;
        }

        $out->addModules( 'mediawiki.special.preferences.ooui' );
        $out->addModuleStyles( 'mediawiki.special.preferences.styles.ooui' );
        $out->addModuleStyles( 'oojs-ui-widgets.styles' );

        $session = $this->getRequest()->getSession();
        if ( $session->get( 'specialPreferencesSaveSuccess' ) ) {
            // Remove session data for the success message
            $session->remove( 'specialPreferencesSaveSuccess' );
            $out->addModuleStyles( 'mediawiki.notification.convertmessagebox.styles' );

            $out->addHTML(
                Html::rawElement(
                    'div',
                    [
                        'class' => 'mw-preferences-messagebox mw-notify-success successbox',
                        'id' => 'mw-preferences-success',
                        'data-mw-autohide' => 'false',
                    ],
                    Html::element( 'p', [], $this->msg( 'savedprefs' )->text() )
                )
            );
        }

        $this->addHelpLink( 'Help:Preferences' );

        // Load the user from the master to reduce CAS errors on double post (T95839)
        if ( $this->getRequest()->wasPosted() ) {
            $user = $this->getUser()->getInstanceForUpdate() ?: $this->getUser();
        } else {
            $user = $this->getUser();
        }

        $htmlForm = $this->getFormObject( $user, $this->getContext() );
        $sectionTitles = $htmlForm->getPreferenceSections();

        $prefTabs = [];
        foreach ( $sectionTitles as $key ) {
            $prefTabs[] = [
                'name' => $key,
                'label' => $htmlForm->getLegend( $key ),
            ];
        }
        $out->addJsConfigVars( 'wgPreferencesTabs', $prefTabs );

        $htmlForm->show();
    }

    protected function getFormObject( $user, IContextSource $context ) {
        $preferencesFactory = MediaWikiServices::getInstance()->getPreferencesFactory();
        $form = $preferencesFactory->getForm( $user, $context, PreferencesFormOOUI::class );
        return $form;
    }

    protected function showResetForm() {
        if ( !$this->getUser()->isAllowed( 'editmyoptions' ) ) {
            throw new PermissionsError( 'editmyoptions' );
        }

        $this->getOutput()->addWikiMsg( 'prefs-reset-intro' );

        $context = new DerivativeContext( $this->getContext() );
        $context->setTitle( $this->getPageTitle( 'reset' ) ); // Reset subpage
        $htmlForm = HTMLForm::factory( 'ooui', [], $context, 'prefs-restore' );

        $htmlForm->setSubmitTextMsg( 'restoreprefs' );
        $htmlForm->setSubmitDestructive();
        $htmlForm->setSubmitCallback( [ $this, 'submitReset' ] );
        $htmlForm->suppressReset();

        $htmlForm->show();
    }

    public function submitReset( $formData ) {
        if ( !$this->getUser()->isAllowed( 'editmyoptions' ) ) {
            throw new PermissionsError( 'editmyoptions' );
        }

        $user = $this->getUser()->getInstanceForUpdate();
        $user->resetOptions( 'all', $this->getContext() );
        $user->saveSettings();

        // Set session data for the success message
        $this->getRequest()->getSession()->set( 'specialPreferencesSaveSuccess', 1 );

        $url = $this->getPageTitle()->getFullUrlForRedirect();
        $this->getOutput()->redirect( $url );

        return true;
    }

    protected function getGroupName() {
        return 'users';
    }
}