includes/specials/SpecialWatchlist.php

   1 <?php
   2 /**
   3  * Implements Special:Watchlist
   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 use MediaWiki\MediaWikiServices;
  25 use Wikimedia\Rdbms\ResultWrapper;
  26
  27 /**
  28  * A special page that lists last changes made to the wiki,
  29  * limited to user-defined list of titles.
  30  *
  31  * @ingroup SpecialPage
  32  */
  33 class SpecialWatchlist extends ChangesListSpecialPage {
  34         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  35                 parent::__construct( $page, $restriction );
  36         }
  37
  38         public function doesWrites() {
  39                 return true;
  40         }
  41
  42         /**
  43          * Main execution point
  44          *
  45          * @param string $subpage
  46          */
  47         function execute( $subpage ) {
  48                 // Anons don't get a watchlist
  49                 $this->requireLogin( 'watchlistanontext' );
  50
  51                 $output = $this->getOutput();
  52                 $request = $this->getRequest();
  53                 $this->addHelpLink( 'Help:Watching pages' );
  54                 $output->addModules( [
  55                         'mediawiki.special.changeslist.visitedstatus',
  56                         'mediawiki.special.watchlist',
  57                 ] );
  58
  59                 $mode = SpecialEditWatchlist::getMode( $request, $subpage );
  60                 if ( $mode !== false ) {
  61                         if ( $mode === SpecialEditWatchlist::EDIT_RAW ) {
  62                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'raw' );
  63                         } elseif ( $mode === SpecialEditWatchlist::EDIT_CLEAR ) {
  64                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'clear' );
  65                         } else {
  66                                 $title = SpecialPage::getTitleFor( 'EditWatchlist' );
  67                         }
  68
  69                         $output->redirect( $title->getLocalURL() );
  70
  71                         return;
  72                 }
  73
  74                 $this->checkPermissions();
  75
  76                 $user = $this->getUser();
  77                 $opts = $this->getOptions();
  78
  79                 $config = $this->getConfig();
  80                 if ( ( $config->get( 'EnotifWatchlist' ) || $config->get( 'ShowUpdatedMarker' ) )
  81                         && $request->getVal( 'reset' )
  82                         && $request->wasPosted()
  83                 ) {
  84                         $user->clearAllNotifications();
  85                         $output->redirect( $this->getPageTitle()->getFullURL( $opts->getChangedValues() ) );
  86
  87                         return;
  88                 }
  89
  90                 parent::execute( $subpage );
  91         }
  92
  93         /**
  94          * Return an array of subpages that this special page will accept.
  95          *
  96          * @see also SpecialEditWatchlist::getSubpagesForPrefixSearch
  97          * @return string[] subpages
  98          */
  99         public function getSubpagesForPrefixSearch() {
 100                 return [
 101                         'clear',
 102                         'edit',
 103                         'raw',
 104                 ];
 105         }
 106
 107         /**
 108          * @inheritdoc
 109          */
 110         protected function registerFiltersFromDefinitions( array $definition ) {
 111                 foreach ( $definition as $groupName => &$groupDefinition ) {
 112                         foreach ( $groupDefinition['filters'] as &$filterDefinition ) {
 113                                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 114                                         $filterDefinition['showHide'] = 'wl' . $filterDefinition['showHideSuffix'];
 115                                 }
 116                         }
 117                 }
 118
 119                 parent::registerFiltersFromDefinitions( $definition );
 120         }
 121
 122         /**
 123          * @inheritdoc
 124          */
 125         protected function registerFilters() {
 126                 parent::registerFilters();
 127
 128                 $user = $this->getUser();
 129
 130                 $significance = $this->getFilterGroup( 'significance' );
 131                 $hideMinor = $significance->getFilter( 'hideminor' );
 132                 $hideMinor->setDefault( $user->getBoolOption( 'watchlisthideminor' ) );
 133
 134                 $automated = $this->getFilterGroup( 'automated' );
 135                 $hideBots = $automated->getFilter( 'hidebots' );
 136                 $hideBots->setDefault( $user->getBoolOption( 'watchlisthidebots' ) );
 137
 138                 $registration = $this->getFilterGroup( 'registration' );
 139                 $hideAnons = $registration->getFilter( 'hideanons' );
 140                 $hideAnons->setDefault( $user->getBoolOption( 'watchlisthideanons' ) );
 141                 $hideLiu = $registration->getFilter( 'hideliu' );
 142                 $hideLiu->setDefault( $user->getBoolOption( 'watchlisthideliu' ) );
 143
 144                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 145                 $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 146                 $hidePatrolled->setDefault( $user->getBoolOption( 'watchlisthidepatrolled' ) );
 147
 148                 $authorship = $this->getFilterGroup( 'authorship' );
 149                 $hideMyself = $authorship->getFilter( 'hidemyself' );
 150                 $hideMyself->setDefault( $user->getBoolOption( 'watchlisthideown' ) );
 151
 152                 $changeType = $this->getFilterGroup( 'changeType' );
 153                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 154                 $hideCategorization->setDefault( $user->getBoolOption( 'watchlisthidecategorization' ) );
 155         }
 156
 157         /**
 158          * Get a FormOptions object containing the default options
 159          *
 160          * @return FormOptions
 161          */
 162         public function getDefaultOptions() {
 163                 $opts = parent::getDefaultOptions();
 164                 $user = $this->getUser();
 165
 166                 $opts->add( 'days', $user->getOption( 'watchlistdays' ), FormOptions::FLOAT );
 167                 $opts->add( 'extended', $user->getBoolOption( 'extendwatchlist' ) );
 168                 if ( $this->getRequest()->getVal( 'action' ) == 'submit' ) {
 169                         // The user has submitted the form, so we dont need the default values
 170                         return $opts;
 171                 }
 172
 173                 return $opts;
 174         }
 175
 176         /**
 177          * Get all custom filters
 178          *
 179          * @return array Map of filter URL param names to properties (msg/default)
 180          */
 181         protected function getCustomFilters() {
 182                 if ( $this->customFilters === null ) {
 183                         $this->customFilters = parent::getCustomFilters();
 184                         Hooks::run( 'SpecialWatchlistFilters', [ $this, &$this->customFilters ], '1.23' );
 185                 }
 186
 187                 return $this->customFilters;
 188         }
 189
 190         /**
 191          * Fetch values for a FormOptions object from the WebRequest associated with this instance.
 192          *
 193          * Maps old pre-1.23 request parameters Watchlist used to use (different from Recentchanges' ones)
 194          * to the current ones.
 195          *
 196          * @param FormOptions $opts
 197          * @return FormOptions
 198          */
 199         protected function fetchOptionsFromRequest( $opts ) {
 200                 static $compatibilityMap = [
 201                         'hideMinor' => 'hideminor',
 202                         'hideBots' => 'hidebots',
 203                         'hideAnons' => 'hideanons',
 204                         'hideLiu' => 'hideliu',
 205                         'hidePatrolled' => 'hidepatrolled',
 206                         'hideOwn' => 'hidemyself',
 207                 ];
 208
 209                 $params = $this->getRequest()->getValues();
 210                 foreach ( $compatibilityMap as $from => $to ) {
 211                         if ( isset( $params[$from] ) ) {
 212                                 $params[$to] = $params[$from];
 213                                 unset( $params[$from] );
 214                         }
 215                 }
 216
 217                 // Not the prettiest way to achieve this… FormOptions internally depends on data sanitization
 218                 // methods defined on WebRequest and removing this dependency would cause some code duplication.
 219                 $request = new DerivativeRequest( $this->getRequest(), $params );
 220                 $opts->fetchValuesFromRequest( $request );
 221
 222                 return $opts;
 223         }
 224
 225         /**
 226          * @inheritdoc
 227          */
 228         protected function buildQuery( &$tables, &$fields, &$conds, &$query_options,
 229                 &$join_conds, FormOptions $opts ) {
 230
 231                 $dbr = $this->getDB();
 232                 parent::buildQuery( $tables, $fields, $conds, $query_options, $join_conds,
 233                         $opts );
 234
 235                 // Calculate cutoff
 236                 if ( $opts['days'] > 0 ) {
 237                         $conds[] = 'rc_timestamp > ' .
 238                                 $dbr->addQuotes( $dbr->timestamp( time() - intval( $opts['days'] * 86400 ) ) );
 239                 }
 240         }
 241
 242         /**
 243          * @inheritdoc
 244          */
 245         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 246                 $join_conds, FormOptions $opts ) {
 247
 248                 $dbr = $this->getDB();
 249                 $user = $this->getUser();
 250
 251                 # Toggle watchlist content (all recent edits or just the latest)
 252                 if ( $opts['extended'] ) {
 253                         $limitWatchlist = $user->getIntOption( 'wllimit' );
 254                         $usePage = false;
 255                 } else {
 256                         # Top log Ids for a page are not stored
 257                         $nonRevisionTypes = [ RC_LOG ];
 258                         Hooks::run( 'SpecialWatchlistGetNonRevisionTypes', [ &$nonRevisionTypes ] );
 259                         if ( $nonRevisionTypes ) {
 260                                 $conds[] = $dbr->makeList(
 261                                         [
 262                                                 'rc_this_oldid=page_latest',
 263                                                 'rc_type' => $nonRevisionTypes,
 264                                         ],
 265                                         LIST_OR
 266                                 );
 267                         }
 268                         $limitWatchlist = 0;
 269                         $usePage = true;
 270                 }
 271
 272                 $tables = array_merge( [ 'recentchanges', 'watchlist' ], $tables );
 273                 $fields = array_merge( RecentChange::selectFields(), $fields );
 274
 275                 $query_options = array_merge( [ 'ORDER BY' => 'rc_timestamp DESC' ], $query_options );
 276                 $join_conds = array_merge(
 277                         [
 278                                 'watchlist' => [
 279                                         'INNER JOIN',
 280                                         [
 281                                                 'wl_user' => $user->getId(),
 282                                                 'wl_namespace=rc_namespace',
 283                                                 'wl_title=rc_title'
 284                                         ],
 285                                 ],
 286                         ],
 287                         $join_conds
 288                 );
 289
 290                 if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 291                         $fields[] = 'wl_notificationtimestamp';
 292                 }
 293                 if ( $limitWatchlist ) {
 294                         $query_options['LIMIT'] = $limitWatchlist;
 295                 }
 296
 297                 $rollbacker = $user->isAllowed( 'rollback' );
 298                 if ( $usePage || $rollbacker ) {
 299                         $tables[] = 'page';
 300                         $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 301                         if ( $rollbacker ) {
 302                                 $fields[] = 'page_latest';
 303                         }
 304                 }
 305
 306                 // Log entries with DELETED_ACTION must not show up unless the user has
 307                 // the necessary rights.
 308                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 309                         $bitmask = LogPage::DELETED_ACTION;
 310                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 311                         $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 312                 } else {
 313                         $bitmask = 0;
 314                 }
 315                 if ( $bitmask ) {
 316                         $conds[] = $dbr->makeList( [
 317                                 'rc_type != ' . RC_LOG,
 318                                 $dbr->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 319                         ], LIST_OR );
 320                 }
 321
 322                 ChangeTags::modifyDisplayQuery(
 323                         $tables,
 324                         $fields,
 325                         $conds,
 326                         $join_conds,
 327                         $query_options,
 328                         ''
 329                 );
 330
 331                 $this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts );
 332
 333                 return $dbr->select(
 334                         $tables,
 335                         $fields,
 336                         $conds,
 337                         __METHOD__,
 338                         $query_options,
 339                         $join_conds
 340                 );
 341         }
 342
 343         protected function runMainQueryHook( &$tables, &$fields, &$conds, &$query_options,
 344                 &$join_conds, $opts
 345         ) {
 346                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 347                         && Hooks::run(
 348                                 'SpecialWatchlistQuery',
 349                                 [ &$conds, &$tables, &$join_conds, &$fields, $opts ],
 350                                 '1.23'
 351                         );
 352         }
 353
 354         /**
 355          * Return a IDatabase object for reading
 356          *
 357          * @return IDatabase
 358          */
 359         protected function getDB() {
 360                 return wfGetDB( DB_REPLICA, 'watchlist' );
 361         }
 362
 363         /**
 364          * Output feed links.
 365          */
 366         public function outputFeedLinks() {
 367                 $user = $this->getUser();
 368                 $wlToken = $user->getTokenFromOption( 'watchlisttoken' );
 369                 if ( $wlToken ) {
 370                         $this->addFeedLinks( [
 371                                 'action' => 'feedwatchlist',
 372                                 'allrev' => 1,
 373                                 'wlowner' => $user->getName(),
 374                                 'wltoken' => $wlToken,
 375                         ] );
 376                 }
 377         }
 378
 379         /**
 380          * Build and output the actual changes list.
 381          *
 382          * @param ResultWrapper $rows Database rows
 383          * @param FormOptions $opts
 384          */
 385         public function outputChangesList( $rows, $opts ) {
 386                 $dbr = $this->getDB();
 387                 $user = $this->getUser();
 388                 $output = $this->getOutput();
 389
 390                 # Show a message about replica DB lag, if applicable
 391                 $lag = wfGetLB()->safeGetLag( $dbr );
 392                 if ( $lag > 0 ) {
 393                         $output->showLagWarning( $lag );
 394                 }
 395
 396                 # If no rows to display, show message before try to render the list
 397                 if ( $rows->numRows() == 0 ) {
 398                         $output->wrapWikiMsg(
 399                                 "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
 400                         );
 401                         return;
 402                 }
 403
 404                 $dbr->dataSeek( $rows, 0 );
 405
 406                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 407                 $list->setWatchlistDivs();
 408                 $list->initChangesListRows( $rows );
 409                 $dbr->dataSeek( $rows, 0 );
 410
 411                 if ( $this->getConfig()->get( 'RCShowWatchingUsers' )
 412                         && $user->getOption( 'shownumberswatching' )
 413                 ) {
 414                         $watchedItemStore = MediaWikiServices::getInstance()->getWatchedItemStore();
 415                 }
 416
 417                 $s = $list->beginRecentChangesList();
 418                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 419                 $counter = 1;
 420                 foreach ( $rows as $obj ) {
 421                         # Make RC entry
 422                         $rc = RecentChange::newFromRow( $obj );
 423
 424                         # Skip CatWatch entries for hidden cats based on user preference
 425                         if (
 426                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 427                                 !$userShowHiddenCats &&
 428                                 $rc->getParam( 'hidden-cat' )
 429                         ) {
 430                                 continue;
 431                         }
 432
 433                         $rc->counter = $counter++;
 434
 435                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 436                                 $updated = $obj->wl_notificationtimestamp;
 437                         } else {
 438                                 $updated = false;
 439                         }
 440
 441                         if ( isset( $watchedItemStore ) ) {
 442                                 $rcTitleValue = new TitleValue( (int)$obj->rc_namespace, $obj->rc_title );
 443                                 $rc->numberofWatchingusers = $watchedItemStore->countWatchers( $rcTitleValue );
 444                         } else {
 445                                 $rc->numberofWatchingusers = 0;
 446                         }
 447
 448                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 449                         if ( $changeLine !== false ) {
 450                                 $s .= $changeLine;
 451                         }
 452                 }
 453                 $s .= $list->endRecentChangesList();
 454
 455                 $output->addHTML( $s );
 456         }
 457
 458         /**
 459          * Set the text to be displayed above the changes
 460          *
 461          * @param FormOptions $opts
 462          * @param int $numRows Number of rows in the result to show after this header
 463          */
 464         public function doHeader( $opts, $numRows ) {
 465                 $user = $this->getUser();
 466                 $out = $this->getOutput();
 467
 468                 $out->addSubtitle(
 469                         $this->msg( 'watchlistfor2', $user->getName() )
 470                                 ->rawParams( SpecialEditWatchlist::buildTools(
 471                                         $this->getLanguage(),
 472                                         $this->getLinkRenderer()
 473                                 ) )
 474                 );
 475
 476                 $this->setTopText( $opts );
 477
 478                 $lang = $this->getLanguage();
 479                 if ( $opts['days'] > 0 ) {
 480                         $days = $opts['days'];
 481                 } else {
 482                         $days = $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 );
 483                 }
 484                 $timestamp = wfTimestampNow();
 485                 $wlInfo = $this->msg( 'wlnote' )->numParams( $numRows, round( $days * 24 ) )->params(
 486                         $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user )
 487                 )->parse() . "<br />\n";
 488
 489                 $nondefaults = $opts->getChangedValues();
 490                 $cutofflinks = $this->msg( 'wlshowtime' ) . ' ' . $this->cutoffselector( $opts );
 491
 492                 # Spit out some control panel links
 493                 $links = [];
 494                 $context = $this->getContext();
 495                 $namesOfDisplayedFilters = [];
 496                 foreach ( $this->getFilterGroups() as $groupName => $group ) {
 497                         if ( !$group->isPerGroupRequestParameter() ) {
 498                                 foreach ( $group->getFilters() as $filterName => $filter ) {
 499                                         if ( $filter->displaysOnUnstructuredUi( $this ) ) {
 500                                                 $namesOfDisplayedFilters[] = $filterName;
 501                                                 $links[] = $this->showHideCheck(
 502                                                         $nondefaults,
 503                                                         $filter->getShowHide(),
 504                                                         $filterName,
 505                                                         $opts[$filterName]
 506                                                 );
 507                                         }
 508                                 }
 509                         }
 510                 }
 511
 512                 $hiddenFields = $nondefaults;
 513                 $hiddenFields['action'] = 'submit';
 514                 unset( $hiddenFields['namespace'] );
 515                 unset( $hiddenFields['invert'] );
 516                 unset( $hiddenFields['associated'] );
 517                 unset( $hiddenFields['days'] );
 518                 foreach ( $namesOfDisplayedFilters as $filterName ) {
 519                         unset( $hiddenFields[$filterName] );
 520                 }
 521
 522                 # Create output
 523                 $form = '';
 524
 525                 # Namespace filter and put the whole form together.
 526                 $form .= $wlInfo;
 527                 $form .= $cutofflinks;
 528                 $form .= $this->msg( 'watchlist-hide' ) .
 529                         $this->msg( 'colon-separator' )->escaped() .
 530                         implode( ' ', $links );
 531                 $form .= "\n<br />\n";
 532                 $form .= Html::namespaceSelector(
 533                         [
 534                                 'selected' => $opts['namespace'],
 535                                 'all' => '',
 536                                 'label' => $this->msg( 'namespace' )->text()
 537                         ], [
 538                                 'name' => 'namespace',
 539                                 'id' => 'namespace',
 540                                 'class' => 'namespaceselector',
 541                         ]
 542                 ) . "\n";
 543                 $form .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 544                         $this->msg( 'invert' )->text(),
 545                         'invert',
 546                         'nsinvert',
 547                         $opts['invert'],
 548                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 549                 ) . "</span>\n";
 550                 $form .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 551                         $this->msg( 'namespace_association' )->text(),
 552                         'associated',
 553                         'nsassociated',
 554                         $opts['associated'],
 555                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 556                 ) . "</span>\n";
 557                 $form .= Xml::submitButton( $this->msg( 'watchlist-submit' )->text() ) . "\n";
 558                 foreach ( $hiddenFields as $key => $value ) {
 559                         $form .= Html::hidden( $key, $value ) . "\n";
 560                 }
 561                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 562                 $form .= Xml::closeElement( 'form' ) . "\n";
 563                 $this->getOutput()->addHTML( $form );
 564
 565                 $this->setBottomText( $opts );
 566         }
 567
 568         function cutoffselector( $options ) {
 569                 // Cast everything to strings immediately, so that we know all of the values have the same
 570                 // precision, and can be compared with '==='. 2/24 has a few more decimal places than its
 571                 // default string representation, for example, and would confuse comparisons.
 572
 573                 // Misleadingly, the 'days' option supports hours too.
 574                 $days = array_map( 'strval', [ 1/24, 2/24, 6/24, 12/24, 1, 3, 7 ] );
 575
 576                 $userWatchlistOption = (string)$this->getUser()->getOption( 'watchlistdays' );
 577                 // add the user preference, if it isn't available already
 578                 if ( !in_array( $userWatchlistOption, $days ) && $userWatchlistOption !== '0' ) {
 579                         $days[] = $userWatchlistOption;
 580                 }
 581
 582                 $maxDays = (string)( $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 ) );
 583                 // add the maximum possible value, if it isn't available already
 584                 if ( !in_array( $maxDays, $days ) ) {
 585                         $days[] = $maxDays;
 586                 }
 587
 588                 $selected = (string)$options['days'];
 589                 if ( $selected <= 0 ) {
 590                         $selected = $maxDays;
 591                 }
 592
 593                 // add the currently selected value, if it isn't available already
 594                 if ( !in_array( $selected, $days ) ) {
 595                         $days[] = $selected;
 596                 }
 597
 598                 $select = new XmlSelect( 'days', 'days', $selected );
 599
 600                 asort( $days );
 601                 foreach ( $days as $value ) {
 602                         if ( $value < 1 ) {
 603                                 $name = $this->msg( 'hours' )->numParams( $value * 24 )->text();
 604                         } else {
 605                                 $name = $this->msg( 'days' )->numParams( $value )->text();
 606                         }
 607                         $select->addOption( $name, $value );
 608                 }
 609
 610                 return $select->getHTML() . "\n<br />\n";
 611         }
 612
 613         function setTopText( FormOptions $opts ) {
 614                 $nondefaults = $opts->getChangedValues();
 615                 $form = "";
 616                 $user = $this->getUser();
 617
 618                 $numItems = $this->countItems();
 619                 $showUpdatedMarker = $this->getConfig()->get( 'ShowUpdatedMarker' );
 620
 621                 // Show watchlist header
 622                 $form .= "<p>";
 623                 if ( $numItems == 0 ) {
 624                         $form .= $this->msg( 'nowatchlist' )->parse() . "\n";
 625                 } else {
 626                         $form .= $this->msg( 'watchlist-details' )->numParams( $numItems )->parse() . "\n";
 627                         if ( $this->getConfig()->get( 'EnotifWatchlist' )
 628                                 && $user->getOption( 'enotifwatchlistpages' )
 629                         ) {
 630                                 $form .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 631                         }
 632                         if ( $showUpdatedMarker ) {
 633                                 $form .= $this->msg( 'wlheader-showupdated' )->parse() . "\n";
 634                         }
 635                 }
 636                 $form .= "</p>";
 637
 638                 if ( $numItems > 0 && $showUpdatedMarker ) {
 639                         $form .= Xml::openElement( 'form', [ 'method' => 'post',
 640                                 'action' => $this->getPageTitle()->getLocalURL(),
 641                                 'id' => 'mw-watchlist-resetbutton' ] ) . "\n" .
 642                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(),
 643                                 [ 'name' => 'mw-watchlist-reset-submit' ] ) . "\n" .
 644                         Html::hidden( 'reset', 'all' ) . "\n";
 645                         foreach ( $nondefaults as $key => $value ) {
 646                                 $form .= Html::hidden( $key, $value ) . "\n";
 647                         }
 648                         $form .= Xml::closeElement( 'form' ) . "\n";
 649                 }
 650
 651                 $form .= Xml::openElement( 'form', [
 652                         'method' => 'get',
 653                         'action' => wfScript(),
 654                         'id' => 'mw-watchlist-form'
 655                 ] );
 656                 $form .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
 657                 $form .= Xml::fieldset(
 658                         $this->msg( 'watchlist-options' )->text(),
 659                         false,
 660                         [ 'id' => 'mw-watchlist-options' ]
 661                 );
 662
 663                 $form .= $this->makeLegend();
 664
 665                 $this->getOutput()->addHTML( $form );
 666         }
 667
 668         protected function showHideCheck( $options, $message, $name, $value ) {
 669                 $options[$name] = 1 - (int)$value;
 670
 671                 return '<span class="mw-input-with-label">' . Xml::checkLabel(
 672                         $this->msg( $message, '' )->text(),
 673                         $name,
 674                         $name,
 675                         (int)$value
 676                 ) . '</span>';
 677         }
 678
 679         /**
 680          * Count the number of paired items on a user's watchlist.
 681          * The assumption made here is that when a subject page is watched a talk page is also watched.
 682          * Hence the number of individual items is halved.
 683          *
 684          * @return int
 685          */
 686         protected function countItems() {
 687                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 688                 $count = $store->countWatchedItems( $this->getUser() );
 689                 return floor( $count / 2 );
 690         }
 691 }