+<?php
+/**
+ * Special page for replacing manually disabled special pages
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup SpecialPage
+ */
+
+/**
+ * This class is a drop-in replacement for other special pages that need to be manually
+ * disabled. To use it, just put something like
+ *
+ * $wgSpecialPages['Name'] = DisabledSpecialPage::getCallback( 'Name', 'message' );
+ *
+ * in the local configuration (where 'Name' is the canonical name of the special page
+ * to be disabled, and 'message' is a message key for explaining the reason for disabling).
+ *
+ * @since 1.33
+ */
+class DisabledSpecialPage extends UnlistedSpecialPage {
+
+ /** @var Message */
+ protected $errorMessage;
+
+ /**
+ * Create a callback suitable for use in $wgSpecialPages.
+ * @param string $name Canonical name of the special page that's being replaced.
+ * @param Message|string|null $errorMessage Error message to show when users try to use the page.
+ * @return Closure
+ */
+ public static function getCallback( $name, $errorMessage = null ) {
+ return function () use ( $name, $errorMessage ) {
+ return new DisabledSpecialPage( $name, $errorMessage );
+ };
+ }
+
+ /**
+ * @param string $name Canonical name of the special page that's being replaced.
+ * @param Message|string|null $errorMessage Error message to show when users try to use the page.
+ */
+ public function __construct( $name, $errorMessage = null ) {
+ parent::__construct( $name );
+ $this->errorMessage = $errorMessage ?: 'disabledspecialpage-disabled';
+ }
+
+ public function execute( $subPage ) {
+ $this->setHeaders();
+ $this->outputHeader();
+
+ $error = Html::rawElement( 'div', [
+ 'class' => 'error',
+ ], $this->msg( $this->errorMessage )->parseAsBlock() );
+ $this->getOutput()->addHTML( $error );
+ }
+
+}