Merge "Add ss_active_users in SiteStats::isSane"

[mediawiki.git] / includes / specials / SpecialMovepage.php

<?php
/**
 * Implements Special:Movepage
 *
 * 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
 */

/**
 * A special page that allows users to change page titles
 *
 * @ingroup SpecialPage
 */
class MovePageForm extends UnlistedSpecialPage {
        /**
         * Objects
         * @var Title
         */
        var $oldTitle, $newTitle;
        // Text input
        var $reason;
        // Checks
        var $moveTalk, $deleteAndMove, $moveSubpages, $fixRedirects, $leaveRedirect, $moveOverShared;

        private $watch = false;

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

        public function execute( $par ) {
                $this->checkReadOnly();

                $this->setHeaders();
                $this->outputHeader();

                $request = $this->getRequest();
                $target = !is_null( $par ) ? $par : $request->getVal( 'target' );

                // Yes, the use of getVal() and getText() is wanted, see bug 20365

                $oldTitleText = $request->getVal( 'wpOldTitle', $target );
                $this->oldTitle = Title::newFromText( $oldTitleText );

                if ( is_null( $this->oldTitle ) ) {
                        throw new ErrorPageError( 'notargettitle', 'notargettext' );
                }
                if ( !$this->oldTitle->exists() ) {
                        throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
                }

                $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
                $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
                // Backwards compatibility for forms submitting here from other sources
                // which is more common than it should be..
                $newTitleText_bc = $request->getText( 'wpNewTitle' );
                $this->newTitle = strlen( $newTitleText_bc ) > 0
                        ? Title::newFromText( $newTitleText_bc )
                        : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );

                $user = $this->getUser();

                # Check rights
                $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
                if ( count( $permErrors ) ) {
                        // Auto-block user's IP if the account was "hard" blocked
                        $user->spreadAnyEditBlock();
                        throw new PermissionsError( 'move', $permErrors );
                }

                $def = !$request->wasPosted();

                $this->reason = $request->getText( 'wpReason' );
                $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
                $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
                $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
                $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
                $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
                $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
                $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();

                if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
                        && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
                ) {
                        $this->doSubmit();
                } else {
                        $this->showForm( array() );
                }
        }

        /**
         * Show the form
         *
         * @param array $err error messages. Each item is an error message.
         *    It may either be a string message name or array message name and
         *    parameters, like the second argument to OutputPage::wrapWikiMsg().
         */
        function showForm( $err ) {
                global $wgContLang, $wgFixDoubleRedirects, $wgMaximumMovedPages;

                $this->getSkin()->setRelevantTitle( $this->oldTitle );

                $oldTitleLink = Linker::link( $this->oldTitle );

                $out = $this->getOutput();
                $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
                $out->addModules( 'mediawiki.special.movePage' );

                $newTitle = $this->newTitle;

                if ( !$newTitle ) {
                        # Show the current title as a default
                        # when the form is first opened.
                        $newTitle = $this->oldTitle;
                } elseif ( !count( $err ) ) {
                        # If a title was supplied, probably from the move log revert
                        # link, check for validity. We can then show some diagnostic
                        # information and save a click.
                        $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
                        if ( is_array( $newerr ) ) {
                                $err = $newerr;
                        }
                }

                $user = $this->getUser();

                if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
                        && $newTitle->quickUserCan( 'delete', $user )
                ) {
                        $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
                        $movepagebtn = $this->msg( 'delete_and_move' )->text();
                        $submitVar = 'wpDeleteAndMove';
                        $confirm = "
                                <tr>
                                        <td></td>
                                        <td class='mw-input'>" .
                                Xml::checkLabel(
                                        $this->msg( 'delete_and_move_confirm' )->text(),
                                        'wpConfirm',
                                        'wpConfirm'
                                ) .
                                "</td>
                                </tr>";
                        $err = array();
                } else {
                        if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
                                $out->wrapWikiMsg(
                                        "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
                                        'moveuserpage-warning'
                                );
                        }

                        $out->addWikiMsg( $wgFixDoubleRedirects ?
                                'movepagetext' :
                                'movepagetext-noredirectfixer'
                        );
                        $movepagebtn = $this->msg( 'movepagebtn' )->text();
                        $submitVar = 'wpMove';
                        $confirm = false;
                }

                if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
                        && $user->isAllowed( 'reupload-shared' )
                ) {
                        $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
                        $submitVar = 'wpMoveOverSharedFile';
                        $err = array();
                }

                $oldTalk = $this->oldTitle->getTalkPage();
                $oldTitleSubpages = $this->oldTitle->hasSubpages();
                $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();

                $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
                        !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );

                # We also want to be able to move assoc. subpage talk-pages even if base page
                # has no associated talk page, so || with $oldTitleTalkSubpages.
                $considerTalk = !$this->oldTitle->isTalkPage() &&
                        ( $oldTalk->exists()
                                || ( $oldTitleTalkSubpages && $canMoveSubpage ) );

                $dbr = wfGetDB( DB_SLAVE );
                if ( $wgFixDoubleRedirects ) {
                        $hasRedirects = $dbr->selectField( 'redirect', '1',
                                array(
                                        'rd_namespace' => $this->oldTitle->getNamespace(),
                                        'rd_title' => $this->oldTitle->getDBkey(),
                                ), __METHOD__ );
                } else {
                        $hasRedirects = false;
                }

                if ( $considerTalk ) {
                        $out->addWikiMsg( 'movepagetalktext' );
                }

                if ( count( $err ) ) {
                        $out->addHTML( "<div class='error'>\n" );
                        $action_desc = $this->msg( 'action-move' )->plain();
                        $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );

                        if ( count( $err ) == 1 ) {
                                $errMsg = $err[0];
                                $errMsgName = array_shift( $errMsg );

                                if ( $errMsgName == 'hookaborted' ) {
                                        $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
                                } else {
                                        $out->addWikiMsgArray( $errMsgName, $errMsg );
                                }
                        } else {
                                $errStr = array();

                                foreach ( $err as $errMsg ) {
                                        if ( $errMsg[0] == 'hookaborted' ) {
                                                $errStr[] = $errMsg[1];
                                        } else {
                                                $errMsgName = array_shift( $errMsg );
                                                $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
                                        }
                                }

                                $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
                        }
                        $out->addHTML( "</div>\n" );
                }

                if ( $this->oldTitle->isProtected( 'move' ) ) {
                        # Is the title semi-protected?
                        if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
                                $noticeMsg = 'semiprotectedpagemovewarning';
                                $classes[] = 'mw-textarea-sprotected';
                        } else {
                                # Then it must be protected based on static groups (regular)
                                $noticeMsg = 'protectedpagemovewarning';
                                $classes[] = 'mw-textarea-protected';
                        }
                        $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
                        $out->addWikiMsg( $noticeMsg );
                        LogEventsList::showLogExtract(
                                $out,
                                'protect',
                                $this->oldTitle,
                                '',
                                array( 'lim' => 1 )
                        );
                        $out->addHTML( "</div>\n" );
                }

                // Byte limit (not string length limit) for wpReason and wpNewTitleMain
                // is enforced in the mediawiki.special.movePage module

                $immovableNamespaces = array();

                foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
                        if ( !MWNamespace::isMovable( $nsId ) ) {
                                $immovableNamespaces[] = $nsId;
                        }
                }

                $handler = ContentHandler::getForTitle( $this->oldTitle );

                $out->addHTML(
                        Xml::openElement(
                                'form',
                                array(
                                        'method' => 'post',
                                        'action' => $this->getTitle()->getLocalURL( 'action=submit' ),
                                        'id' => 'movepage'
                                )
                        ) .
                                Xml::openElement( 'fieldset' ) .
                                Xml::element( 'legend', null, $this->msg( 'move-page-legend' )->text() ) .
                                Xml::openElement( 'table', array( 'id' => 'mw-movepage-table' ) ) .
                                "<tr>
                                <td class='mw-label'>" .
                                $this->msg( 'movearticle' )->escaped() .
                                "</td>
                                <td class='mw-input'>
                                        <strong>{$oldTitleLink}</strong>
                                </td>
                        </tr>
                        <tr>
                                <td class='mw-label'>" .
                                Xml::label( $this->msg( 'newtitle' )->text(), 'wpNewTitleMain' ) .
                                "</td>
                                <td class='mw-input'>" .
                                Html::namespaceSelector(
                                        array(
                                                'selected' => $newTitle->getNamespace(),
                                                'exclude' => $immovableNamespaces
                                        ),
                                        array( 'name' => 'wpNewTitleNs', 'id' => 'wpNewTitleNs' )
                                ) .
                                Xml::input(
                                        'wpNewTitleMain',
                                        60,
                                        $wgContLang->recodeForEdit( $newTitle->getText() ),
                                        array(
                                                'type' => 'text',
                                                'id' => 'wpNewTitleMain',
                                                'maxlength' => 255
                                        )
                                ) .
                                Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
                                "</td>
                        </tr>
                        <tr>
                                <td class='mw-label'>" .
                                Xml::label( $this->msg( 'movereason' )->text(), 'wpReason' ) .
                                "</td>
                                <td class='mw-input'>" .
                                        Xml::input( 'wpReason', 60, $this->reason, array(
                                                'type' => 'text',
                                                'id' => 'wpReason',
                                                'maxlength' => 200,
                                        ) ) .
                                "</td>
                        </tr>"
                );

                if ( $considerTalk ) {
                        $out->addHTML( "
                                <tr>
                                        <td></td>
                                        <td class='mw-input'>" .
                                        Xml::checkLabel(
                                                $this->msg( 'movetalk' )->text(),
                                                'wpMovetalk',
                                                'wpMovetalk',
                                                $this->moveTalk
                                        ) .
                                        "</td>
                                </tr>"
                        );
                }

                if ( $user->isAllowed( 'suppressredirect' ) && $handler->supportsRedirects() ) {
                        $out->addHTML( "
                                <tr>
                                        <td></td>
                                        <td class='mw-input' >" .
                                        Xml::checkLabel(
                                                $this->msg( 'move-leave-redirect' )->text(),
                                                'wpLeaveRedirect',
                                                'wpLeaveRedirect',
                                                $this->leaveRedirect
                                        ) .
                                        "</td>
                                </tr>"
                        );
                }

                if ( $hasRedirects ) {
                        $out->addHTML( "
                                <tr>
                                        <td></td>
                                        <td class='mw-input' >" .
                                        Xml::checkLabel(
                                                $this->msg( 'fix-double-redirects' )->text(),
                                                'wpFixRedirects',
                                                'wpFixRedirects',
                                                $this->fixRedirects
                                        ) .
                                        "</td>
                                </tr>"
                        );
                }

                if ( $canMoveSubpage ) {
                        $out->addHTML( "
                                <tr>
                                        <td></td>
                                        <td class=\"mw-input\">" .
                                        Xml::check(
                                                'wpMovesubpages',
                                                # Don't check the box if we only have talk subpages to
                                                # move and we aren't moving the talk page.
                                                $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
                                                array( 'id' => 'wpMovesubpages' )
                                        ) . '&#160;' .
                                        Xml::tags( 'label', array( 'for' => 'wpMovesubpages' ),
                                                $this->msg(
                                                        ( $this->oldTitle->hasSubpages()
                                                                ? 'move-subpages'
                                                                : 'move-talk-subpages' )
                                                )->numParams( $wgMaximumMovedPages )->params( $wgMaximumMovedPages )->parse()
                                        ) .
                                        "</td>
                                </tr>"
                        );
                }

                $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
                        || $user->isWatched( $this->oldTitle ) );
                # Don't allow watching if user is not logged in
                if ( $user->isLoggedIn() ) {
                        $out->addHTML( "
                        <tr>
                                <td></td>
                                <td class='mw-input'>" .
                                Xml::checkLabel(
                                        $this->msg( 'move-watch' )->text(),
                                        'wpWatch',
                                        'watch',
                                        $watchChecked
                                ) .
                                "</td>
                        </tr>" );
                }

                $out->addHTML( "
                                {$confirm}
                        <tr>
                                <td>&#160;</td>
                                <td class='mw-submit'>" .
                                Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
                                "</td>
                        </tr>" .
                                Xml::closeElement( 'table' ) .
                                Html::hidden( 'wpEditToken', $user->getEditToken() ) .
                                Xml::closeElement( 'fieldset' ) .
                                Xml::closeElement( 'form' ) .
                                "\n"
                );

                $this->showLogFragment( $this->oldTitle );
                $this->showSubpages( $this->oldTitle );
        }

        function doSubmit() {
                global $wgMaximumMovedPages, $wgFixDoubleRedirects;

                $user = $this->getUser();

                if ( $user->pingLimiter( 'move' ) ) {
                        throw new ThrottledError;
                }

                $ot = $this->oldTitle;
                $nt = $this->newTitle;

                # don't allow moving to pages with # in
                if ( !$nt || $nt->getFragment() != '' ) {
                        $this->showForm( array( array( 'badtitletext' ) ) );

                        return;
                }

                # Show a warning if the target file exists on a shared repo
                if ( $nt->getNamespace() == NS_FILE
                        && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
                        && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
                        && wfFindFile( $nt )
                ) {
                        $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );

                        return;
                }

                # Delete to make way if requested
                if ( $this->deleteAndMove ) {
                        $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
                        if ( count( $permErrors ) ) {
                                # Only show the first error
                                $this->showForm( $permErrors );

                                return;
                        }

                        $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();

                        // Delete an associated image if there is
                        if ( $nt->getNamespace() == NS_FILE ) {
                                $file = wfLocalFile( $nt );
                                if ( $file->exists() ) {
                                        $file->delete( $reason, false );
                                }
                        }

                        $error = ''; // passed by ref
                        $page = WikiPage::factory( $nt );
                        $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
                        if ( !$deleteStatus->isGood() ) {
                                $this->showForm( $deleteStatus->getErrorsArray() );

                                return;
                        }
                }

                $handler = ContentHandler::getForTitle( $ot );

                if ( !$handler->supportsRedirects() ) {
                        $createRedirect = false;
                } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
                        $createRedirect = $this->leaveRedirect;
                } else {
                        $createRedirect = true;
                }

                # Do the actual move.
                $error = $ot->moveTo( $nt, true, $this->reason, $createRedirect );
                if ( $error !== true ) {
                        $this->showForm( $error );

                        return;
                }

                if ( $wgFixDoubleRedirects && $this->fixRedirects ) {
                        DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
                }

                $out = $this->getOutput();
                $out->setPageTitle( $this->msg( 'pagemovedsub' ) );

                $oldLink = Linker::link(
                        $ot,
                        null,
                        array(),
                        array( 'redirect' => 'no' )
                );
                $newLink = Linker::linkKnown( $nt );
                $oldText = $ot->getPrefixedText();
                $newText = $nt->getPrefixedText();

                if ( $ot->exists() ) {
                        //NOTE: we assume that if the old title exists, it's because it was re-created as
                        // a redirect to the new title. This is not safe, but what we did before was
                        // even worse: we just determined whether a redirect should have been created,
                        // and reported that it was created if it should have, without any checks.
                        // Also note that isRedirect() is unreliable because of bug 37209.
                        $msgName = 'movepage-moved-redirect';
                } else {
                        $msgName = 'movepage-moved-noredirect';
                }

                $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
                        $newLink )->params( $oldText, $newText )->parseAsBlock() );
                $out->addWikiMsg( $msgName );

                wfRunHooks( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );

                # Now we move extra pages we've been asked to move: subpages and talk
                # pages.  First, if the old page or the new page is a talk page, we
                # can't move any talk pages: cancel that.
                if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
                        $this->moveTalk = false;
                }

                if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
                        $this->moveSubpages = false;
                }

                # Next make a list of id's.  This might be marginally less efficient
                # than a more direct method, but this is not a highly performance-cri-
                # tical code path and readable code is more important here.
                #
                # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
                # 4 might get confused.  If so, consider rewriting as a UNION.
                #
                # If the target namespace doesn't allow subpages, moving with subpages
                # would mean that you couldn't move them back in one operation, which
                # is bad.
                # @todo FIXME: A specific error message should be given in this case.

                // @todo FIXME: Use Title::moveSubpages() here
                $dbr = wfGetDB( DB_MASTER );
                if ( $this->moveSubpages && (
                        MWNamespace::hasSubpages( $nt->getNamespace() ) || (
                                $this->moveTalk &&
                                        MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
                        )
                ) ) {
                        $conds = array(
                                'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
                                        . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
                        );
                        $conds['page_namespace'] = array();
                        if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
                                $conds['page_namespace'][] = $ot->getNamespace();
                        }
                        if ( $this->moveTalk &&
                                MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
                        ) {
                                $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
                        }
                } elseif ( $this->moveTalk ) {
                        $conds = array(
                                'page_namespace' => $ot->getTalkPage()->getNamespace(),
                                'page_title' => $ot->getDBkey()
                        );
                } else {
                        # Skip the query
                        $conds = null;
                }

                $extraPages = array();
                if ( !is_null( $conds ) ) {
                        $extraPages = TitleArray::newFromResult(
                                $dbr->select( 'page',
                                        array( 'page_id', 'page_namespace', 'page_title' ),
                                        $conds,
                                        __METHOD__
                                )
                        );
                }

                $extraOutput = array();
                $count = 1;
                foreach ( $extraPages as $oldSubpage ) {
                        if ( $ot->equals( $oldSubpage ) ) {
                                # Already did this one.
                                continue;
                        }

                        $newPageName = preg_replace(
                                '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
                                StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
                                $oldSubpage->getDBkey()
                        );

                        if ( $oldSubpage->isTalkPage() ) {
                                $newNs = $nt->getTalkPage()->getNamespace();
                        } else {
                                $newNs = $nt->getSubjectPage()->getNamespace();
                        }

                        # Bug 14385: we need makeTitleSafe because the new page names may
                        # be longer than 255 characters.
                        $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
                        if ( !$newSubpage ) {
                                $oldLink = Linker::linkKnown( $oldSubpage );
                                $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink     )
                                        ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
                                continue;
                        }

                        # This was copy-pasted from Renameuser, bleh.
                        if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
                                $link = Linker::linkKnown( $newSubpage );
                                $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
                        } else {
                                $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );

                                if ( $success === true ) {
                                        if ( $this->fixRedirects ) {
                                                DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
                                        }
                                        $oldLink = Linker::link(
                                                $oldSubpage,
                                                null,
                                                array(),
                                                array( 'redirect' => 'no' )
                                        );

                                        $newLink = Linker::linkKnown( $newSubpage );
                                        $extraOutput[] = $this->msg( 'movepage-page-moved' )->rawParams( $oldLink, $newLink )->escaped();
                                        ++$count;

                                        if ( $count >= $wgMaximumMovedPages ) {
                                                $extraOutput[] = $this->msg( 'movepage-max-pages' )->numParams( $wgMaximumMovedPages )->escaped();
                                                break;
                                        }
                                } else {
                                        $oldLink = Linker::linkKnown( $oldSubpage );
                                        $newLink = Linker::link( $newSubpage );
                                        $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink, $newLink )->escaped();
                                }
                        }
                }

                if ( $extraOutput !== array() ) {
                        $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
                }

                # Deal with watches (we don't watch subpages)
                if ( $this->watch && $user->isLoggedIn() ) {
                        $user->addWatch( $ot );
                        $user->addWatch( $nt );
                } else {
                        $user->removeWatch( $ot );
                        $user->removeWatch( $nt );
                }

                # Re-clear the file redirect cache, which may have been polluted by
                # parsing in messages above. See CR r56745.
                # @todo FIXME: Needs a more robust solution inside FileRepo.
                if ( $ot->getNamespace() == NS_FILE ) {
                        RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $ot );
                }
        }

        function showLogFragment( $title ) {
                $moveLogPage = new LogPage( 'move' );
                $out = $this->getOutput();
                $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
                LogEventsList::showLogExtract( $out, 'move', $title );
        }

        function showSubpages( $title ) {
                if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
                        return;
                }

                $subpages = $title->getSubpages();
                $count = $subpages instanceof TitleArray ? $subpages->count() : 0;

                $out = $this->getOutput();
                $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );

                # No subpages.
                if ( $count == 0 ) {
                        $out->addWikiMsg( 'movenosubpage' );

                        return;
                }

                $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
                $out->addHTML( "<ul>\n" );

                foreach ( $subpages as $subpage ) {
                        $link = Linker::link( $subpage );
                        $out->addHTML( "<li>$link</li>\n" );
                }
                $out->addHTML( "</ul>\n" );
        }

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