SpecialResetTokens.php

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<?php
class SpecialResetTokens extends FormSpecialPage {
    private $tokensList;

    public function __construct() {
        parent::__construct( 'ResetTokens' );
    }

    protected function getTokensList() {
        global $wgHiddenPrefs;

        if ( !isset( $this->tokensList ) ) {
            $tokens = array(
                array( 'preference' => 'watchlisttoken', 'label-message' => 'resettokens-watchlist-token' ),
            );
            wfRunHooks( 'SpecialResetTokensTokens', array( &$tokens ) );

            $tokens = array_filter( $tokens, function ( $tok ) use ( $wgHiddenPrefs ) {
                return !in_array( $tok['preference'], $wgHiddenPrefs );
            } );

            $this->tokensList = $tokens;
        }

        return $this->tokensList;
    }

    public function execute( $par ) {
        // This is a preferences page, so no user JS for y'all.
        $this->getOutput()->disallowUserJs();

        parent::execute( $par );

        $this->getOutput()->addReturnTo( SpecialPage::getTitleFor( 'Preferences' ) );
    }

    public function onSuccess() {
        $this->getOutput()->wrapWikiMsg(
            "<div class='successbox'>\n$1\n</div>",
            'resettokens-done'
        );
    }

    protected function getFormFields() {
        $user = $this->getUser();
        $tokens = $this->getTokensList();

        if ( $tokens ) {
            $tokensForForm = array();
            foreach ( $tokens as $tok ) {
                $label = $this->msg( 'resettokens-token-label' )
                    ->rawParams( $this->msg( $tok['label-message'] )->parse() )
                    ->params( $user->getTokenFromOption( $tok['preference'] ) )
                    ->escaped();
                $tokensForForm[ $label ] = $tok['preference'];
            }

            $desc = array(
                'label-message' => 'resettokens-tokens',
                'type' => 'multiselect',
                'options' => $tokensForForm,
            );
        } else {
            $desc = array(
                'label-message' => 'resettokens-no-tokens',
                'type' => 'info',
            );
        }

        return array(
            'tokens' => $desc,
        );
    }

    protected function alterForm( HTMLForm $form ) {
        if ( $this->getTokensList() ) {
            $form->setSubmitTextMsg( 'resettokens-resetbutton' );
        } else {
            $form->suppressDefaultSubmit();
        }
    }

    public function onSubmit( array $formData ) {
        if ( $formData['tokens'] ) {
            $user = $this->getUser();
            foreach ( $formData['tokens'] as $tokenPref ) {
                $user->resetTokenFromOption( $tokenPref );
            }
            $user->saveSettings();

            return true;
        }

        return false;
    }

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

    public function isListed() {
        return (bool)$this->getTokensList();
    }
}