includes/specials/SpecialDeletedContributions.php

   1 <?php
   2 /**
   3  * Implements Special:DeletedContributions
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:DeletedContributions to display archived revisions
  26  * @ingroup SpecialPage
  27  */
  28 class DeletedContribsPager extends IndexPager {
  29         public $mDefaultDirection = IndexPager::DIR_DESCENDING;
  30         public $messages;
  31         public $target;
  32         public $namespace = '';
  33         public $mDb;
  34
  35         /**
  36          * @var string Navigation bar with paging links.
  37          */
  38         protected $mNavigationBar;
  39
  40         function __construct( IContextSource $context, $target, $namespace = false ) {
  41                 parent::__construct( $context );
  42                 $msgs = [ 'deletionlog', 'undeleteviewlink', 'diff' ];
  43                 foreach ( $msgs as $msg ) {
  44                         $this->messages[$msg] = $this->msg( $msg )->escaped();
  45                 }
  46                 $this->target = $target;
  47                 $this->namespace = $namespace;
  48                 $this->mDb = wfGetDB( DB_SLAVE, 'contributions' );
  49         }
  50
  51         function getDefaultQuery() {
  52                 $query = parent::getDefaultQuery();
  53                 $query['target'] = $this->target;
  54
  55                 return $query;
  56         }
  57
  58         function getQueryInfo() {
  59                 list( $index, $userCond ) = $this->getUserCond();
  60                 $conds = array_merge( $userCond, $this->getNamespaceCond() );
  61                 $user = $this->getUser();
  62                 // Paranoia: avoid brute force searches (bug 17792)
  63                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
  64                         $conds[] = $this->mDb->bitAnd( 'ar_deleted', Revision::DELETED_USER ) . ' = 0';
  65                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
  66                         $conds[] = $this->mDb->bitAnd( 'ar_deleted', Revision::SUPPRESSED_USER ) .
  67                                 ' != ' . Revision::SUPPRESSED_USER;
  68                 }
  69
  70                 return [
  71                         'tables' => [ 'archive' ],
  72                         'fields' => [
  73                                 'ar_rev_id', 'ar_namespace', 'ar_title', 'ar_timestamp', 'ar_comment',
  74                                 'ar_minor_edit', 'ar_user', 'ar_user_text', 'ar_deleted'
  75                         ],
  76                         'conds' => $conds,
  77                         'options' => [ 'USE INDEX' => $index ]
  78                 ];
  79         }
  80
  81         /**
  82          * This method basically executes the exact same code as the parent class, though with
  83          * a hook added, to allow extensions to add additional queries.
  84          *
  85          * @param string $offset Index offset, inclusive
  86          * @param int $limit Exact query limit
  87          * @param bool $descending Query direction, false for ascending, true for descending
  88          * @return ResultWrapper
  89          */
  90         function reallyDoQuery( $offset, $limit, $descending ) {
  91                 $data = [ parent::reallyDoQuery( $offset, $limit, $descending ) ];
  92
  93                 // This hook will allow extensions to add in additional queries, nearly
  94                 // identical to ContribsPager::reallyDoQuery.
  95                 Hooks::run(
  96                         'DeletedContribsPager::reallyDoQuery',
  97                         [ &$data, $this, $offset, $limit, $descending ]
  98                 );
  99
 100                 $result = [];
 101
 102                 // loop all results and collect them in an array
 103                 foreach ( $data as $query ) {
 104                         foreach ( $query as $i => $row ) {
 105                                 // use index column as key, allowing us to easily sort in PHP
 106                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 107                         }
 108                 }
 109
 110                 // sort results
 111                 if ( $descending ) {
 112                         ksort( $result );
 113                 } else {
 114                         krsort( $result );
 115                 }
 116
 117                 // enforce limit
 118                 $result = array_slice( $result, 0, $limit );
 119
 120                 // get rid of array keys
 121                 $result = array_values( $result );
 122
 123                 return new FakeResultWrapper( $result );
 124         }
 125
 126         function getUserCond() {
 127                 $condition = [];
 128
 129                 $condition['ar_user_text'] = $this->target;
 130                 $index = 'usertext_timestamp';
 131
 132                 return [ $index, $condition ];
 133         }
 134
 135         function getIndexField() {
 136                 return 'ar_timestamp';
 137         }
 138
 139         function getStartBody() {
 140                 return "<ul>\n";
 141         }
 142
 143         function getEndBody() {
 144                 return "</ul>\n";
 145         }
 146
 147         function getNavigationBar() {
 148                 if ( isset( $this->mNavigationBar ) ) {
 149                         return $this->mNavigationBar;
 150                 }
 151
 152                 $linkTexts = [
 153                         'prev' => $this->msg( 'pager-newer-n' )->numParams( $this->mLimit )->escaped(),
 154                         'next' => $this->msg( 'pager-older-n' )->numParams( $this->mLimit )->escaped(),
 155                         'first' => $this->msg( 'histlast' )->escaped(),
 156                         'last' => $this->msg( 'histfirst' )->escaped()
 157                 ];
 158
 159                 $pagingLinks = $this->getPagingLinks( $linkTexts );
 160                 $limitLinks = $this->getLimitLinks();
 161                 $lang = $this->getLanguage();
 162                 $limits = $lang->pipeList( $limitLinks );
 163
 164                 $firstLast = $lang->pipeList( [ $pagingLinks['first'], $pagingLinks['last'] ] );
 165                 $firstLast = $this->msg( 'parentheses' )->rawParams( $firstLast )->escaped();
 166                 $prevNext = $this->msg( 'viewprevnext' )
 167                         ->rawParams(
 168                                 $pagingLinks['prev'],
 169                                 $pagingLinks['next'],
 170                                 $limits
 171                         )->escaped();
 172                 $separator = $this->msg( 'word-separator' )->escaped();
 173                 $this->mNavigationBar = $firstLast . $separator . $prevNext;
 174
 175                 return $this->mNavigationBar;
 176         }
 177
 178         function getNamespaceCond() {
 179                 if ( $this->namespace !== '' ) {
 180                         return [ 'ar_namespace' => (int)$this->namespace ];
 181                 } else {
 182                         return [];
 183                 }
 184         }
 185
 186         /**
 187          * Generates each row in the contributions list.
 188          *
 189          * @todo This would probably look a lot nicer in a table.
 190          * @param stdClass $row
 191          * @return string
 192          */
 193         function formatRow( $row ) {
 194                 $ret = '';
 195                 $classes = [];
 196
 197                 /*
 198                  * There may be more than just revision rows. To make sure that we'll only be processing
 199                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 200                  * notices though) and then trying to grab data from the built object. If we succeed,
 201                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 202                  * to extensions to subscribe to the hook to parse the row.
 203                  */
 204                 MediaWiki\suppressWarnings();
 205                 try {
 206                         $rev = Revision::newFromArchiveRow( $row );
 207                         $validRevision = (bool)$rev->getId();
 208                 } catch ( Exception $e ) {
 209                         $validRevision = false;
 210                 }
 211                 MediaWiki\restoreWarnings();
 212
 213                 if ( $validRevision ) {
 214                         $ret = $this->formatRevisionRow( $row );
 215                 }
 216
 217                 // Let extensions add data
 218                 Hooks::run( 'DeletedContributionsLineEnding', [ $this, &$ret, $row, &$classes ] );
 219
 220                 if ( $classes === [] && $ret === '' ) {
 221                         wfDebug( "Dropping Special:DeletedContribution row that could not be formatted\n" );
 222                         $ret = "<!-- Could not format Special:DeletedContribution row. -->\n";
 223                 } else {
 224                         $ret = Html::rawElement( 'li', [ 'class' => $classes ], $ret ) . "\n";
 225                 }
 226
 227                 return $ret;
 228         }
 229
 230         /**
 231          * Generates each row in the contributions list for archive entries.
 232          *
 233          * Contributions which are marked "top" are currently on top of the history.
 234          * For these contributions, a [rollback] link is shown for users with sysop
 235          * privileges. The rollback link restores the most recent version that was not
 236          * written by the target user.
 237          *
 238          * @todo This would probably look a lot nicer in a table.
 239          * @param stdClass $row
 240          * @return string
 241          */
 242         function formatRevisionRow( $row ) {
 243                 $page = Title::makeTitle( $row->ar_namespace, $row->ar_title );
 244
 245                 $rev = new Revision( [
 246                         'title' => $page,
 247                         'id' => $row->ar_rev_id,
 248                         'comment' => $row->ar_comment,
 249                         'user' => $row->ar_user,
 250                         'user_text' => $row->ar_user_text,
 251                         'timestamp' => $row->ar_timestamp,
 252                         'minor_edit' => $row->ar_minor_edit,
 253                         'deleted' => $row->ar_deleted,
 254                 ] );
 255
 256                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 257
 258                 $logs = SpecialPage::getTitleFor( 'Log' );
 259                 $dellog = Linker::linkKnown(
 260                         $logs,
 261                         $this->messages['deletionlog'],
 262                         [],
 263                         [
 264                                 'type' => 'delete',
 265                                 'page' => $page->getPrefixedText()
 266                         ]
 267                 );
 268
 269                 $reviewlink = Linker::linkKnown(
 270                         SpecialPage::getTitleFor( 'Undelete', $page->getPrefixedDBkey() ),
 271                         $this->messages['undeleteviewlink']
 272                 );
 273
 274                 $user = $this->getUser();
 275
 276                 if ( $user->isAllowed( 'deletedtext' ) ) {
 277                         $last = Linker::linkKnown(
 278                                 $undelete,
 279                                 $this->messages['diff'],
 280                                 [],
 281                                 [
 282                                         'target' => $page->getPrefixedText(),
 283                                         'timestamp' => $rev->getTimestamp(),
 284                                         'diff' => 'prev'
 285                                 ]
 286                         );
 287                 } else {
 288                         $last = $this->messages['diff'];
 289                 }
 290
 291                 $comment = Linker::revComment( $rev );
 292                 $date = $this->getLanguage()->userTimeAndDate( $rev->getTimestamp(), $user );
 293                 $date = htmlspecialchars( $date );
 294
 295                 if ( !$user->isAllowed( 'undelete' ) || !$rev->userCan( Revision::DELETED_TEXT, $user ) ) {
 296                         $link = $date; // unusable link
 297                 } else {
 298                         $link = Linker::linkKnown(
 299                                 $undelete,
 300                                 $date,
 301                                 [ 'class' => 'mw-changeslist-date' ],
 302                                 [
 303                                         'target' => $page->getPrefixedText(),
 304                                         'timestamp' => $rev->getTimestamp()
 305                                 ]
 306                         );
 307                 }
 308                 // Style deleted items
 309                 if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 310                         $link = '<span class="history-deleted">' . $link . '</span>';
 311                 }
 312
 313                 $pagelink = Linker::link(
 314                         $page,
 315                         null,
 316                         [ 'class' => 'mw-changeslist-title' ]
 317                 );
 318
 319                 if ( $rev->isMinor() ) {
 320                         $mflag = ChangesList::flag( 'minor' );
 321                 } else {
 322                         $mflag = '';
 323                 }
 324
 325                 // Revision delete link
 326                 $del = Linker::getRevDeleteLink( $user, $rev, $page );
 327                 if ( $del ) {
 328                         $del .= ' ';
 329                 }
 330
 331                 $tools = Html::rawElement(
 332                         'span',
 333                         [ 'class' => 'mw-deletedcontribs-tools' ],
 334                         $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->pipeList(
 335                                 [ $last, $dellog, $reviewlink ] ) )->escaped()
 336                 );
 337
 338                 $separator = '<span class="mw-changeslist-separator">. .</span>';
 339                 $ret = "{$del}{$link} {$tools} {$separator} {$mflag} {$pagelink} {$comment}";
 340
 341                 # Denote if username is redacted for this edit
 342                 if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 343                         $ret .= " <strong>" . $this->msg( 'rev-deleted-user-contribs' )->escaped() . "</strong>";
 344                 }
 345
 346                 return $ret;
 347         }
 348
 349         /**
 350          * Get the Database object in use
 351          *
 352          * @return IDatabase
 353          */
 354         public function getDatabase() {
 355                 return $this->mDb;
 356         }
 357 }
 358
 359 class DeletedContributionsPage extends SpecialPage {
 360         function __construct() {
 361                 parent::__construct( 'DeletedContributions', 'deletedhistory',
 362                         /*listed*/true, /*function*/false, /*file*/false );
 363         }
 364
 365         /**
 366          * Special page "deleted user contributions".
 367          * Shows a list of the deleted contributions of a user.
 368          *
 369          * @param string $par (optional) user name of the user for which to show the contributions
 370          */
 371         function execute( $par ) {
 372                 $this->setHeaders();
 373                 $this->outputHeader();
 374
 375                 $user = $this->getUser();
 376
 377                 if ( !$this->userCanExecute( $user ) ) {
 378                         $this->displayRestrictionError();
 379
 380                         return;
 381                 }
 382
 383                 $request = $this->getRequest();
 384                 $out = $this->getOutput();
 385                 $out->setPageTitle( $this->msg( 'deletedcontributions-title' ) );
 386
 387                 $options = [];
 388
 389                 if ( $par !== null ) {
 390                         $target = $par;
 391                 } else {
 392                         $target = $request->getVal( 'target' );
 393                 }
 394
 395                 if ( !strlen( $target ) ) {
 396                         $out->addHTML( $this->getForm( '' ) );
 397
 398                         return;
 399                 }
 400
 401                 $options['limit'] = $request->getInt( 'limit',
 402                         $this->getConfig()->get( 'QueryPageDefaultLimit' ) );
 403                 $options['target'] = $target;
 404
 405                 $userObj = User::newFromName( $target, false );
 406                 if ( !$userObj ) {
 407                         $out->addHTML( $this->getForm( '' ) );
 408
 409                         return;
 410                 }
 411                 $this->getSkin()->setRelevantUser( $userObj );
 412
 413                 $target = $userObj->getName();
 414                 $out->addSubtitle( $this->getSubTitle( $userObj ) );
 415
 416                 $ns = $request->getVal( 'namespace', null );
 417                 if ( $ns !== null && $ns !== '' ) {
 418                         $options['namespace'] = intval( $ns );
 419                 } else {
 420                         $options['namespace'] = '';
 421                 }
 422
 423                 $out->addHTML( $this->getForm( $options ) );
 424
 425                 $pager = new DeletedContribsPager( $this->getContext(), $target, $options['namespace'] );
 426                 if ( !$pager->getNumRows() ) {
 427                         $out->addWikiMsg( 'nocontribs' );
 428
 429                         return;
 430                 }
 431
 432                 # Show a message about slave lag, if applicable
 433                 $lag = wfGetLB()->safeGetLag( $pager->getDatabase() );
 434                 if ( $lag > 0 ) {
 435                         $out->showLagWarning( $lag );
 436                 }
 437
 438                 $out->addHTML(
 439                         '<p>' . $pager->getNavigationBar() . '</p>' .
 440                                 $pager->getBody() .
 441                                 '<p>' . $pager->getNavigationBar() . '</p>' );
 442
 443                 # If there were contributions, and it was a valid user or IP, show
 444                 # the appropriate "footer" message - WHOIS tools, etc.
 445                 if ( $target != 'newbies' ) {
 446                         $message = IP::isIPAddress( $target ) ?
 447                                 'sp-contributions-footer-anon' :
 448                                 'sp-contributions-footer';
 449
 450                         if ( !$this->msg( $message )->isDisabled() ) {
 451                                 $out->wrapWikiMsg(
 452                                         "<div class='mw-contributions-footer'>\n$1\n</div>",
 453                                         [ $message, $target ]
 454                                 );
 455                         }
 456                 }
 457         }
 458
 459         /**
 460          * Generates the subheading with links
 461          * @param User $userObj User object for the target
 462          * @return string Appropriately-escaped HTML to be output literally
 463          * @todo FIXME: Almost the same as contributionsSub in SpecialContributions.php. Could be combined.
 464          */
 465         function getSubTitle( $userObj ) {
 466                 if ( $userObj->isAnon() ) {
 467                         $user = htmlspecialchars( $userObj->getName() );
 468                 } else {
 469                         $user = Linker::link( $userObj->getUserPage(), htmlspecialchars( $userObj->getName() ) );
 470                 }
 471                 $links = '';
 472                 $nt = $userObj->getUserPage();
 473                 $id = $userObj->getId();
 474                 $talk = $nt->getTalkPage();
 475                 if ( $talk ) {
 476                         # Talk page link
 477                         $tools[] = Linker::link( $talk, $this->msg( 'sp-contributions-talk' )->escaped() );
 478                         if ( ( $id !== null ) || ( $id === null && IP::isIPAddress( $nt->getText() ) ) ) {
 479                                 # Block / Change block / Unblock links
 480                                 if ( $this->getUser()->isAllowed( 'block' ) ) {
 481                                         if ( $userObj->isBlocked() && $userObj->getBlock()->getType() !== Block::TYPE_AUTO ) {
 482                                                 $tools[] = Linker::linkKnown( # Change block link
 483                                                         SpecialPage::getTitleFor( 'Block', $nt->getDBkey() ),
 484                                                         $this->msg( 'change-blocklink' )->escaped()
 485                                                 );
 486                                                 $tools[] = Linker::linkKnown( # Unblock link
 487                                                         SpecialPage::getTitleFor( 'BlockList' ),
 488                                                         $this->msg( 'unblocklink' )->escaped(),
 489                                                         [],
 490                                                         [
 491                                                                 'action' => 'unblock',
 492                                                                 'ip' => $nt->getDBkey()
 493                                                         ]
 494                                                 );
 495                                         } else {
 496                                                 # User is not blocked
 497                                                 $tools[] = Linker::linkKnown( # Block link
 498                                                         SpecialPage::getTitleFor( 'Block', $nt->getDBkey() ),
 499                                                         $this->msg( 'blocklink' )->escaped()
 500                                                 );
 501                                         }
 502                                 }
 503                                 # Block log link
 504                                 $tools[] = Linker::linkKnown(
 505                                         SpecialPage::getTitleFor( 'Log' ),
 506                                         $this->msg( 'sp-contributions-blocklog' )->escaped(),
 507                                         [],
 508                                         [
 509                                                 'type' => 'block',
 510                                                 'page' => $nt->getPrefixedText()
 511                                         ]
 512                                 );
 513                                 # Suppression log link (bug 59120)
 514                                 if ( $this->getUser()->isAllowed( 'suppressionlog' ) ) {
 515                                         $tools[] = Linker::linkKnown(
 516                                                 SpecialPage::getTitleFor( 'Log', 'suppress' ),
 517                                                 $this->msg( 'sp-contributions-suppresslog' )->escaped(),
 518                                                 [],
 519                                                 [ 'offender' => $userObj->getName() ]
 520                                         );
 521                                 }
 522                         }
 523
 524                         # Uploads
 525                         $tools[] = Linker::linkKnown(
 526                                 SpecialPage::getTitleFor( 'Listfiles', $userObj->getName() ),
 527                                 $this->msg( 'sp-contributions-uploads' )->escaped()
 528                         );
 529
 530                         # Other logs link
 531                         $tools[] = Linker::linkKnown(
 532                                 SpecialPage::getTitleFor( 'Log' ),
 533                                 $this->msg( 'sp-contributions-logs' )->escaped(),
 534                                 [],
 535                                 [ 'user' => $nt->getText() ]
 536                         );
 537                         # Link to contributions
 538                         $tools[] = Linker::linkKnown(
 539                                 SpecialPage::getTitleFor( 'Contributions', $nt->getDBkey() ),
 540                                 $this->msg( 'sp-deletedcontributions-contribs' )->escaped()
 541                         );
 542
 543                         # Add a link to change user rights for privileged users
 544                         $userrightsPage = new UserrightsPage();
 545                         $userrightsPage->setContext( $this->getContext() );
 546                         if ( $userrightsPage->userCanChangeRights( $userObj ) ) {
 547                                 $tools[] = Linker::linkKnown(
 548                                         SpecialPage::getTitleFor( 'Userrights', $nt->getDBkey() ),
 549                                         $this->msg( 'sp-contributions-userrights' )->escaped()
 550                                 );
 551                         }
 552
 553                         Hooks::run( 'ContributionsToolLinks', [ $id, $nt, &$tools ] );
 554
 555                         $links = $this->getLanguage()->pipeList( $tools );
 556
 557                         // Show a note if the user is blocked and display the last block log entry.
 558                         $block = Block::newFromTarget( $userObj, $userObj );
 559                         if ( !is_null( $block ) && $block->getType() != Block::TYPE_AUTO ) {
 560                                 if ( $block->getType() == Block::TYPE_RANGE ) {
 561                                         $nt = MWNamespace::getCanonicalName( NS_USER ) . ':' . $block->getTarget();
 562                                 }
 563
 564                                 // LogEventsList::showLogExtract() wants the first parameter by ref
 565                                 $out = $this->getOutput();
 566                                 LogEventsList::showLogExtract(
 567                                         $out,
 568                                         'block',
 569                                         $nt,
 570                                         '',
 571                                         [
 572                                                 'lim' => 1,
 573                                                 'showIfEmpty' => false,
 574                                                 'msgKey' => [
 575                                                         'sp-contributions-blocked-notice',
 576                                                         $userObj->getName() # Support GENDER in 'sp-contributions-blocked-notice'
 577                                                 ],
 578                                                 'offset' => '' # don't use $this->getRequest() parameter offset
 579                                         ]
 580                                 );
 581                         }
 582                 }
 583
 584                 return $this->msg( 'contribsub2' )->rawParams( $user, $links )->params( $userObj->getName() );
 585         }
 586
 587         /**
 588          * Generates the namespace selector form with hidden attributes.
 589          * @param array $options The options to be included.
 590          * @return string
 591          */
 592         function getForm( $options ) {
 593                 $options['title'] = $this->getPageTitle()->getPrefixedText();
 594                 if ( !isset( $options['target'] ) ) {
 595                         $options['target'] = '';
 596                 } else {
 597                         $options['target'] = str_replace( '_', ' ', $options['target'] );
 598                 }
 599
 600                 if ( !isset( $options['namespace'] ) ) {
 601                         $options['namespace'] = '';
 602                 }
 603
 604                 if ( !isset( $options['contribs'] ) ) {
 605                         $options['contribs'] = 'user';
 606                 }
 607
 608                 if ( $options['contribs'] == 'newbie' ) {
 609                         $options['target'] = '';
 610                 }
 611
 612                 $f = Xml::openElement( 'form', [ 'method' => 'get', 'action' => wfScript() ] );
 613
 614                 foreach ( $options as $name => $value ) {
 615                         if ( in_array( $name, [ 'namespace', 'target', 'contribs' ] ) ) {
 616                                 continue;
 617                         }
 618                         $f .= "\t" . Html::hidden( $name, $value ) . "\n";
 619                 }
 620
 621                 $this->getOutput()->addModules( 'mediawiki.userSuggest' );
 622
 623                 $f .= Xml::openElement( 'fieldset' );
 624                 $f .= Xml::element( 'legend', [], $this->msg( 'sp-contributions-search' )->text() );
 625                 $f .= Xml::tags(
 626                         'label',
 627                         [ 'for' => 'target' ],
 628                         $this->msg( 'sp-contributions-username' )->parse()
 629                 ) . ' ';
 630                 $f .= Html::input(
 631                         'target',
 632                         $options['target'],
 633                         'text',
 634                         [
 635                                 'size' => '20',
 636                                 'required' => '',
 637                                 'class' => [
 638                                         'mw-autocomplete-user', // used by mediawiki.userSuggest
 639                                 ],
 640                         ] + ( $options['target'] ? [] : [ 'autofocus' ] )
 641                 ) . ' ';
 642                 $f .= Html::namespaceSelector(
 643                         [
 644                                 'selected' => $options['namespace'],
 645                                 'all' => '',
 646                                 'label' => $this->msg( 'namespace' )->text()
 647                         ],
 648                         [
 649                                 'name' => 'namespace',
 650                                 'id' => 'namespace',
 651                                 'class' => 'namespaceselector',
 652                         ]
 653                 ) . ' ';
 654                 $f .= Xml::submitButton( $this->msg( 'sp-contributions-submit' )->text() );
 655                 $f .= Xml::closeElement( 'fieldset' );
 656                 $f .= Xml::closeElement( 'form' );
 657
 658                 return $f;
 659         }
 660
 661         /**
 662          * Return an array of subpages beginning with $search that this special page will accept.
 663          *
 664          * @param string $search Prefix to search for
 665          * @param int $limit Maximum number of results to return (usually 10)
 666          * @param int $offset Number of results to skip (usually 0)
 667          * @return string[] Matching subpages
 668          */
 669         public function prefixSearchSubpages( $search, $limit, $offset ) {
 670                 $user = User::newFromName( $search );
 671                 if ( !$user ) {
 672                         // No prefix suggestion for invalid user
 673                         return [];
 674                 }
 675                 // Autocomplete subpage as user list - public to allow caching
 676                 return UserNamePrefixSearch::search( 'public', $search, $limit, $offset );
 677         }
 678
 679         protected function getGroupName() {
 680                 return 'users';
 681         }
 682 }