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 use Wikimedia\Rdbms\IDatabase;
  27
  28 /**
  29  * A special page that lists last changes made to the wiki,
  30  * limited to user-defined list of titles.
  31  *
  32  * @ingroup SpecialPage
  33  */
  34 class SpecialWatchlist extends ChangesListSpecialPage {
  35         private $maxDays;
  36
  37         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  38                 parent::__construct( $page, $restriction );
  39
  40                 $this->maxDays = $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 );
  41         }
  42
  43         public function doesWrites() {
  44                 return true;
  45         }
  46
  47         /**
  48          * Main execution point
  49          *
  50          * @param string $subpage
  51          */
  52         function execute( $subpage ) {
  53                 // Anons don't get a watchlist
  54                 $this->requireLogin( 'watchlistanontext' );
  55
  56                 $output = $this->getOutput();
  57                 $request = $this->getRequest();
  58                 $this->addHelpLink( 'Help:Watching pages' );
  59                 $output->addModules( [
  60                         'mediawiki.special.changeslist.visitedstatus',
  61                         'mediawiki.special.watchlist',
  62                 ] );
  63                 $output->addModuleStyles( [ 'mediawiki.special.watchlist.styles' ] );
  64
  65                 $mode = SpecialEditWatchlist::getMode( $request, $subpage );
  66                 if ( $mode !== false ) {
  67                         if ( $mode === SpecialEditWatchlist::EDIT_RAW ) {
  68                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'raw' );
  69                         } elseif ( $mode === SpecialEditWatchlist::EDIT_CLEAR ) {
  70                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'clear' );
  71                         } else {
  72                                 $title = SpecialPage::getTitleFor( 'EditWatchlist' );
  73                         }
  74
  75                         $output->redirect( $title->getLocalURL() );
  76
  77                         return;
  78                 }
  79
  80                 $this->checkPermissions();
  81
  82                 $user = $this->getUser();
  83                 $opts = $this->getOptions();
  84
  85                 $config = $this->getConfig();
  86                 if ( ( $config->get( 'EnotifWatchlist' ) || $config->get( 'ShowUpdatedMarker' ) )
  87                         && $request->getVal( 'reset' )
  88                         && $request->wasPosted()
  89                         && $user->matchEditToken( $request->getVal( 'token' ) )
  90                 ) {
  91                         $user->clearAllNotifications();
  92                         $output->redirect( $this->getPageTitle()->getFullURL( $opts->getChangedValues() ) );
  93
  94                         return;
  95                 }
  96
  97                 parent::execute( $subpage );
  98
  99                 if ( $this->isStructuredFilterUiEnabled() ) {
 100                         $output->addModuleStyles( [ 'mediawiki.rcfilters.highlightCircles.seenunseen.styles' ] );
 101
 102                         $output->addJsConfigVars( 'wgStructuredChangeFiltersLiveUpdateSupported', false );
 103                         $output->addJsConfigVars(
 104                                 'wgStructuredChangeFiltersSavedQueriesPreferenceName',
 105                                 'rcfilters-wl-saved-queries'
 106                         );
 107                         $output->addJsConfigVars(
 108                                 'wgStructuredChangeFiltersEditWatchlistUrl',
 109                                 SpecialPage::getTitleFor( 'EditWatchlist' )->getLocalURL()
 110                         );
 111                 }
 112         }
 113
 114         protected function isStructuredFilterUiEnabled() {
 115                 return parent::isStructuredFilterUiEnabled()
 116                         && ( $this->getConfig()->get( 'StructuredChangeFiltersOnWatchlist' )
 117                                 || $this->getRequest()->getBool( 'rcfilters' ) );
 118         }
 119
 120         /**
 121          * Return an array of subpages that this special page will accept.
 122          *
 123          * @see also SpecialEditWatchlist::getSubpagesForPrefixSearch
 124          * @return string[] subpages
 125          */
 126         public function getSubpagesForPrefixSearch() {
 127                 return [
 128                         'clear',
 129                         'edit',
 130                         'raw',
 131                 ];
 132         }
 133
 134         /**
 135          * @inheritDoc
 136          */
 137         protected function transformFilterDefinition( array $filterDefinition ) {
 138                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 139                         $filterDefinition['showHide'] = 'wl' . $filterDefinition['showHideSuffix'];
 140                 }
 141
 142                 return $filterDefinition;
 143         }
 144
 145         /**
 146          * @inheritDoc
 147          */
 148         protected function registerFilters() {
 149                 parent::registerFilters();
 150
 151                 // legacy 'extended' filter
 152                 $this->registerFilterGroup( new ChangesListBooleanFilterGroup( [
 153                         'name' => 'extended-group',
 154                         'filters' => [
 155                                 [
 156                                         'name' => 'extended',
 157                                         'isReplacedInStructuredUi' => true,
 158                                         'activeValue' => false,
 159                                         'default' => $this->getUser()->getBoolOption( 'extendwatchlist' ),
 160                                         'queryCallable' => function ( $specialClassName, $ctx, $dbr, &$tables,
 161                                                                                                   &$fields, &$conds, &$query_options, &$join_conds ) {
 162                                                 $nonRevisionTypes = [ RC_LOG ];
 163                                                 Hooks::run( 'SpecialWatchlistGetNonRevisionTypes', [ &$nonRevisionTypes ] );
 164                                                 if ( $nonRevisionTypes ) {
 165                                                         $conds[] = $dbr->makeList(
 166                                                                 [
 167                                                                         'rc_this_oldid=page_latest',
 168                                                                         'rc_type' => $nonRevisionTypes,
 169                                                                 ],
 170                                                                 LIST_OR
 171                                                         );
 172                                                 }
 173                                         },
 174                                 ]
 175                         ],
 176
 177                 ] ) );
 178
 179                 if ( $this->isStructuredFilterUiEnabled() ) {
 180                         $this->getFilterGroup( 'lastRevision' )
 181                                 ->getFilter( 'hidepreviousrevisions' )
 182                                 ->setDefault( !$this->getUser()->getBoolOption( 'extendwatchlist' ) );
 183                 }
 184
 185                 $this->registerFilterGroup( new ChangesListStringOptionsFilterGroup( [
 186                         'name' => 'watchlistactivity',
 187                         'title' => 'rcfilters-filtergroup-watchlistactivity',
 188                         'class' => ChangesListStringOptionsFilterGroup::class,
 189                         'priority' => 3,
 190                         'isFullCoverage' => true,
 191                         'filters' => [
 192                                 [
 193                                         'name' => 'unseen',
 194                                         'label' => 'rcfilters-filter-watchlistactivity-unseen-label',
 195                                         'description' => 'rcfilters-filter-watchlistactivity-unseen-description',
 196                                         'cssClassSuffix' => 'watchedunseen',
 197                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
 198                                                 $changeTs = $rc->getAttribute( 'rc_timestamp' );
 199                                                 $lastVisitTs = $rc->getAttribute( 'wl_notificationtimestamp' );
 200                                                 return $lastVisitTs !== null && $changeTs >= $lastVisitTs;
 201                                         },
 202                                 ],
 203                                 [
 204                                         'name' => 'seen',
 205                                         'label' => 'rcfilters-filter-watchlistactivity-seen-label',
 206                                         'description' => 'rcfilters-filter-watchlistactivity-seen-description',
 207                                         'cssClassSuffix' => 'watchedseen',
 208                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
 209                                                 $changeTs = $rc->getAttribute( 'rc_timestamp' );
 210                                                 $lastVisitTs = $rc->getAttribute( 'wl_notificationtimestamp' );
 211                                                 return $lastVisitTs === null || $changeTs < $lastVisitTs;
 212                                         }
 213                                 ],
 214                         ],
 215                         'default' => ChangesListStringOptionsFilterGroup::NONE,
 216                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
 217                                                                                   &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
 218                                 if ( $selectedValues === [ 'seen' ] ) {
 219                                         $conds[] = $dbr->makeList( [
 220                                                 'wl_notificationtimestamp IS NULL',
 221                                                 'rc_timestamp < wl_notificationtimestamp'
 222                                         ], LIST_OR );
 223                                 } elseif ( $selectedValues === [ 'unseen' ] ) {
 224                                         $conds[] = $dbr->makeList( [
 225                                                 'wl_notificationtimestamp IS NOT NULL',
 226                                                 'rc_timestamp >= wl_notificationtimestamp'
 227                                         ], LIST_AND );
 228                                 }
 229                         }
 230                 ] ) );
 231
 232                 $user = $this->getUser();
 233
 234                 $significance = $this->getFilterGroup( 'significance' );
 235                 $hideMinor = $significance->getFilter( 'hideminor' );
 236                 $hideMinor->setDefault( $user->getBoolOption( 'watchlisthideminor' ) );
 237
 238                 $automated = $this->getFilterGroup( 'automated' );
 239                 $hideBots = $automated->getFilter( 'hidebots' );
 240                 $hideBots->setDefault( $user->getBoolOption( 'watchlisthidebots' ) );
 241
 242                 $registration = $this->getFilterGroup( 'registration' );
 243                 $hideAnons = $registration->getFilter( 'hideanons' );
 244                 $hideAnons->setDefault( $user->getBoolOption( 'watchlisthideanons' ) );
 245                 $hideLiu = $registration->getFilter( 'hideliu' );
 246                 $hideLiu->setDefault( $user->getBoolOption( 'watchlisthideliu' ) );
 247
 248                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 249                 if ( $reviewStatus !== null ) {
 250                         // Conditional on feature being available and rights
 251                         $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 252                         $hidePatrolled->setDefault( $user->getBoolOption( 'watchlisthidepatrolled' ) );
 253                 }
 254
 255                 $authorship = $this->getFilterGroup( 'authorship' );
 256                 $hideMyself = $authorship->getFilter( 'hidemyself' );
 257                 $hideMyself->setDefault( $user->getBoolOption( 'watchlisthideown' ) );
 258
 259                 $changeType = $this->getFilterGroup( 'changeType' );
 260                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 261                 if ( $hideCategorization !== null ) {
 262                         // Conditional on feature being available
 263                         $hideCategorization->setDefault( $user->getBoolOption( 'watchlisthidecategorization' ) );
 264                 }
 265         }
 266
 267         /**
 268          * Get a FormOptions object containing the default options
 269          *
 270          * @return FormOptions
 271          */
 272         public function getDefaultOptions() {
 273                 $opts = parent::getDefaultOptions();
 274                 $user = $this->getUser();
 275
 276                 $opts->add( 'days', $user->getOption( 'watchlistdays' ), FormOptions::FLOAT );
 277                 $opts->add( 'limit', $user->getIntOption( 'wllimit' ), FormOptions::INT );
 278
 279                 return $opts;
 280         }
 281
 282         public function validateOptions( FormOptions $opts ) {
 283                 $opts->validateBounds( 'days', 0, $this->maxDays );
 284                 $opts->validateIntBounds( 'limit', 0, 5000 );
 285                 parent::validateOptions( $opts );
 286         }
 287
 288         /**
 289          * Get all custom filters
 290          *
 291          * @return array Map of filter URL param names to properties (msg/default)
 292          */
 293         protected function getCustomFilters() {
 294                 if ( $this->customFilters === null ) {
 295                         $this->customFilters = parent::getCustomFilters();
 296                         Hooks::run( 'SpecialWatchlistFilters', [ $this, &$this->customFilters ], '1.23' );
 297                 }
 298
 299                 return $this->customFilters;
 300         }
 301
 302         /**
 303          * Fetch values for a FormOptions object from the WebRequest associated with this instance.
 304          *
 305          * Maps old pre-1.23 request parameters Watchlist used to use (different from Recentchanges' ones)
 306          * to the current ones.
 307          *
 308          * @param FormOptions $opts
 309          * @return FormOptions
 310          */
 311         protected function fetchOptionsFromRequest( $opts ) {
 312                 static $compatibilityMap = [
 313                         'hideMinor' => 'hideminor',
 314                         'hideBots' => 'hidebots',
 315                         'hideAnons' => 'hideanons',
 316                         'hideLiu' => 'hideliu',
 317                         'hidePatrolled' => 'hidepatrolled',
 318                         'hideOwn' => 'hidemyself',
 319                 ];
 320
 321                 $params = $this->getRequest()->getValues();
 322                 foreach ( $compatibilityMap as $from => $to ) {
 323                         if ( isset( $params[$from] ) ) {
 324                                 $params[$to] = $params[$from];
 325                                 unset( $params[$from] );
 326                         }
 327                 }
 328
 329                 if ( $this->getRequest()->getVal( 'action' ) == 'submit' ) {
 330                         $allBooleansFalse = [];
 331
 332                         // If the user submitted the form, start with a baseline of "all
 333                         // booleans are false", then change the ones they checked.  This
 334                         // means we ignore the defaults.
 335
 336                         // This is how we handle the fact that HTML forms don't submit
 337                         // unchecked boxes.
 338                         foreach ( $this->filterGroups as $filterGroup ) {
 339                                 if ( $filterGroup instanceof ChangesListBooleanFilterGroup ) {
 340                                         /** @var ChangesListBooleanFilter $filter */
 341                                         foreach ( $filterGroup->getFilters() as $filter ) {
 342                                                 if ( $filter->displaysOnUnstructuredUi() ) {
 343                                                         $allBooleansFalse[$filter->getName()] = false;
 344                                                 }
 345                                         }
 346                                 }
 347                         }
 348
 349                         $params = $params + $allBooleansFalse;
 350                 }
 351
 352                 // Not the prettiest way to achieve this… FormOptions internally depends on data sanitization
 353                 // methods defined on WebRequest and removing this dependency would cause some code duplication.
 354                 $request = new DerivativeRequest( $this->getRequest(), $params );
 355                 $opts->fetchValuesFromRequest( $request );
 356
 357                 return $opts;
 358         }
 359
 360         /**
 361          * @inheritDoc
 362          */
 363         protected function buildQuery( &$tables, &$fields, &$conds, &$query_options,
 364                 &$join_conds, FormOptions $opts
 365         ) {
 366                 $dbr = $this->getDB();
 367                 parent::buildQuery( $tables, $fields, $conds, $query_options, $join_conds,
 368                         $opts );
 369
 370                 // Calculate cutoff
 371                 if ( $opts['days'] > 0 ) {
 372                         $conds[] = 'rc_timestamp > ' .
 373                                 $dbr->addQuotes( $dbr->timestamp( time() - $opts['days'] * 3600 * 24 ) );
 374                 }
 375         }
 376
 377         /**
 378          * @inheritDoc
 379          */
 380         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 381                 $join_conds, FormOptions $opts
 382         ) {
 383                 $dbr = $this->getDB();
 384                 $user = $this->getUser();
 385
 386                 $tables = array_merge( [ 'recentchanges', 'watchlist' ], $tables );
 387                 $fields = array_merge( RecentChange::selectFields(), $fields );
 388
 389                 $join_conds = array_merge(
 390                         [
 391                                 'watchlist' => [
 392                                         'INNER JOIN',
 393                                         [
 394                                                 'wl_user' => $user->getId(),
 395                                                 'wl_namespace=rc_namespace',
 396                                                 'wl_title=rc_title'
 397                                         ],
 398                                 ],
 399                         ],
 400                         $join_conds
 401                 );
 402
 403                 $tables[] = 'page';
 404                 $fields[] = 'page_latest';
 405                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 406
 407                 $fields[] = 'wl_notificationtimestamp';
 408
 409                 // Log entries with DELETED_ACTION must not show up unless the user has
 410                 // the necessary rights.
 411                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 412                         $bitmask = LogPage::DELETED_ACTION;
 413                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 414                         $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 415                 } else {
 416                         $bitmask = 0;
 417                 }
 418                 if ( $bitmask ) {
 419                         $conds[] = $dbr->makeList( [
 420                                 'rc_type != ' . RC_LOG,
 421                                 $dbr->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 422                         ], LIST_OR );
 423                 }
 424
 425                 $tagFilter = $opts['tagfilter'] ? explode( '|', $opts['tagfilter'] ) : [];
 426                 ChangeTags::modifyDisplayQuery(
 427                         $tables,
 428                         $fields,
 429                         $conds,
 430                         $join_conds,
 431                         $query_options,
 432                         $tagFilter
 433                 );
 434
 435                 $this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts );
 436
 437                 if ( $this->areFiltersInConflict() ) {
 438                         return false;
 439                 }
 440
 441                 $orderByAndLimit = [
 442                         'ORDER BY' => 'rc_timestamp DESC',
 443                         'LIMIT' => $opts['limit']
 444                 ];
 445                 if ( in_array( 'DISTINCT', $query_options ) ) {
 446                         // ChangeTags::modifyDisplayQuery() adds DISTINCT when filtering on multiple tags.
 447                         // In order to prevent DISTINCT from causing query performance problems,
 448                         // we have to GROUP BY the primary key. This in turn requires us to add
 449                         // the primary key to the end of the ORDER BY, and the old ORDER BY to the
 450                         // start of the GROUP BY
 451                         $orderByAndLimit['ORDER BY'] = 'rc_timestamp DESC, rc_id DESC';
 452                         $orderByAndLimit['GROUP BY'] = 'rc_timestamp, rc_id';
 453                 }
 454                 // array_merge() is used intentionally here so that hooks can, should
 455                 // they so desire, override the ORDER BY / LIMIT condition(s)
 456                 $query_options = array_merge( $orderByAndLimit, $query_options );
 457
 458                 return $dbr->select(
 459                         $tables,
 460                         $fields,
 461                         $conds,
 462                         __METHOD__,
 463                         $query_options,
 464                         $join_conds
 465                 );
 466         }
 467
 468         protected function runMainQueryHook( &$tables, &$fields, &$conds, &$query_options,
 469                 &$join_conds, $opts
 470         ) {
 471                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 472                         && Hooks::run(
 473                                 'SpecialWatchlistQuery',
 474                                 [ &$conds, &$tables, &$join_conds, &$fields, $opts ],
 475                                 '1.23'
 476                         );
 477         }
 478
 479         /**
 480          * Return a IDatabase object for reading
 481          *
 482          * @return IDatabase
 483          */
 484         protected function getDB() {
 485                 return wfGetDB( DB_REPLICA, 'watchlist' );
 486         }
 487
 488         /**
 489          * Output feed links.
 490          */
 491         public function outputFeedLinks() {
 492                 $user = $this->getUser();
 493                 $wlToken = $user->getTokenFromOption( 'watchlisttoken' );
 494                 if ( $wlToken ) {
 495                         $this->addFeedLinks( [
 496                                 'action' => 'feedwatchlist',
 497                                 'allrev' => 1,
 498                                 'wlowner' => $user->getName(),
 499                                 'wltoken' => $wlToken,
 500                         ] );
 501                 }
 502         }
 503
 504         /**
 505          * Build and output the actual changes list.
 506          *
 507          * @param ResultWrapper $rows Database rows
 508          * @param FormOptions $opts
 509          */
 510         public function outputChangesList( $rows, $opts ) {
 511                 $dbr = $this->getDB();
 512                 $user = $this->getUser();
 513                 $output = $this->getOutput();
 514
 515                 # Show a message about replica DB lag, if applicable
 516                 $lag = wfGetLB()->safeGetLag( $dbr );
 517                 if ( $lag > 0 ) {
 518                         $output->showLagWarning( $lag );
 519                 }
 520
 521                 # If no rows to display, show message before try to render the list
 522                 if ( $rows->numRows() == 0 ) {
 523                         $output->wrapWikiMsg(
 524                                 "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
 525                         );
 526                         return;
 527                 }
 528
 529                 $dbr->dataSeek( $rows, 0 );
 530
 531                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 532                 $list->setWatchlistDivs();
 533                 $list->initChangesListRows( $rows );
 534                 if ( $user->getOption( 'watchlistunwatchlinks' ) ) {
 535                         $list->setChangeLinePrefixer( function ( RecentChange $rc, ChangesList $cl, $grouped ) {
 536                                 // Don't show unwatch link if the line is a grouped log entry using EnhancedChangesList,
 537                                 // since EnhancedChangesList groups log entries by performer rather than by target article
 538                                 if ( $rc->mAttribs['rc_type'] == RC_LOG && $cl instanceof EnhancedChangesList &&
 539                                         $grouped ) {
 540                                         return '';
 541                                 } else {
 542                                         return $this->getLinkRenderer()
 543                                                         ->makeKnownLink( $rc->getTitle(),
 544                                                                 $this->msg( 'watchlist-unwatch' )->text(), [
 545                                                                         'class' => 'mw-unwatch-link',
 546                                                                         'title' => $this->msg( 'tooltip-ca-unwatch' )->text()
 547                                                                 ], [ 'action' => 'unwatch' ] ) . '&#160;';
 548                                 }
 549                         } );
 550                 }
 551                 $dbr->dataSeek( $rows, 0 );
 552
 553                 if ( $this->getConfig()->get( 'RCShowWatchingUsers' )
 554                         && $user->getOption( 'shownumberswatching' )
 555                 ) {
 556                         $watchedItemStore = MediaWikiServices::getInstance()->getWatchedItemStore();
 557                 }
 558
 559                 $s = $list->beginRecentChangesList();
 560
 561                 if ( $this->isStructuredFilterUiEnabled() ) {
 562                         $s .= $this->makeLegend();
 563                 }
 564
 565                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 566                 $counter = 1;
 567                 foreach ( $rows as $obj ) {
 568                         # Make RC entry
 569                         $rc = RecentChange::newFromRow( $obj );
 570
 571                         # Skip CatWatch entries for hidden cats based on user preference
 572                         if (
 573                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 574                                 !$userShowHiddenCats &&
 575                                 $rc->getParam( 'hidden-cat' )
 576                         ) {
 577                                 continue;
 578                         }
 579
 580                         $rc->counter = $counter++;
 581
 582                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 583                                 $updated = $obj->wl_notificationtimestamp;
 584                         } else {
 585                                 $updated = false;
 586                         }
 587
 588                         if ( isset( $watchedItemStore ) ) {
 589                                 $rcTitleValue = new TitleValue( (int)$obj->rc_namespace, $obj->rc_title );
 590                                 $rc->numberofWatchingusers = $watchedItemStore->countWatchers( $rcTitleValue );
 591                         } else {
 592                                 $rc->numberofWatchingusers = 0;
 593                         }
 594
 595                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 596                         if ( $changeLine !== false ) {
 597                                 $s .= $changeLine;
 598                         }
 599                 }
 600                 $s .= $list->endRecentChangesList();
 601
 602                 $output->addHTML( $s );
 603         }
 604
 605         /**
 606          * Set the text to be displayed above the changes
 607          *
 608          * @param FormOptions $opts
 609          * @param int $numRows Number of rows in the result to show after this header
 610          */
 611         public function doHeader( $opts, $numRows ) {
 612                 $user = $this->getUser();
 613                 $out = $this->getOutput();
 614
 615                 $out->addSubtitle(
 616                         $this->msg( 'watchlistfor2', $user->getName() )
 617                                 ->rawParams( SpecialEditWatchlist::buildTools(
 618                                         $this->getLanguage(),
 619                                         $this->getLinkRenderer()
 620                                 ) )
 621                 );
 622
 623                 $this->setTopText( $opts );
 624
 625                 $form = '';
 626
 627                 $form .= Xml::openElement( 'form', [
 628                         'method' => 'get',
 629                         'action' => wfScript(),
 630                         'id' => 'mw-watchlist-form'
 631                 ] );
 632                 $form .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
 633                 $form .= Xml::fieldset(
 634                         $this->msg( 'watchlist-options' )->text(),
 635                         false,
 636                         [ 'id' => 'mw-watchlist-options', 'class' => 'cloptions' ]
 637                 );
 638
 639                 if ( !$this->isStructuredFilterUiEnabled() ) {
 640                         $form .= $this->makeLegend();
 641                 }
 642
 643                 $lang = $this->getLanguage();
 644                 if ( $opts['days'] > 0 ) {
 645                         $days = $opts['days'];
 646                 } else {
 647                         $days = $this->maxDays;
 648                 }
 649                 $timestamp = wfTimestampNow();
 650                 $wlInfo = Html::rawElement(
 651                         'span',
 652                         [ 'class' => 'wlinfo' ],
 653                         $this->msg( 'wlnote' )->numParams( $numRows, round( $days * 24 ) )->params(
 654                                 $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user )
 655                         )->parse()
 656                 ) . "<br />\n";
 657
 658                 $nondefaults = $opts->getChangedValues();
 659                 $cutofflinks = Html::rawElement(
 660                         'span',
 661                         [ 'class' => 'cldays cloption' ],
 662                         $this->msg( 'wlshowtime' ) . ' ' . $this->cutoffselector( $opts )
 663                 );
 664
 665                 # Spit out some control panel links
 666                 $links = [];
 667                 $namesOfDisplayedFilters = [];
 668                 foreach ( $this->getFilterGroups() as $groupName => $group ) {
 669                         if ( !$group->isPerGroupRequestParameter() ) {
 670                                 foreach ( $group->getFilters() as $filterName => $filter ) {
 671                                         if ( $filter->displaysOnUnstructuredUi( $this ) ) {
 672                                                 $namesOfDisplayedFilters[] = $filterName;
 673                                                 $links[] = $this->showHideCheck(
 674                                                         $nondefaults,
 675                                                         $filter->getShowHide(),
 676                                                         $filterName,
 677                                                         $opts[$filterName],
 678                                                         $filter->isFeatureAvailableOnStructuredUi( $this )
 679                                                 );
 680                                         }
 681                                 }
 682                         }
 683                 }
 684
 685                 $hiddenFields = $nondefaults;
 686                 $hiddenFields['action'] = 'submit';
 687                 unset( $hiddenFields['namespace'] );
 688                 unset( $hiddenFields['invert'] );
 689                 unset( $hiddenFields['associated'] );
 690                 unset( $hiddenFields['days'] );
 691                 foreach ( $namesOfDisplayedFilters as $filterName ) {
 692                         unset( $hiddenFields[$filterName] );
 693                 }
 694
 695                 # Namespace filter and put the whole form together.
 696                 $form .= $wlInfo;
 697                 $form .= $cutofflinks;
 698                 $form .= Html::rawElement(
 699                         'span',
 700                         [ 'class' => 'clshowhide' ],
 701                         $this->msg( 'watchlist-hide' ) .
 702                         $this->msg( 'colon-separator' )->escaped() .
 703                         implode( ' ', $links )
 704                 );
 705                 $form .= "\n<br />\n";
 706
 707                 $namespaceForm = Html::namespaceSelector(
 708                         [
 709                                 'selected' => $opts['namespace'],
 710                                 'all' => '',
 711                                 'label' => $this->msg( 'namespace' )->text()
 712                         ], [
 713                                 'name' => 'namespace',
 714                                 'id' => 'namespace',
 715                                 'class' => 'namespaceselector',
 716                         ]
 717                 ) . "\n";
 718                 $namespaceForm .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 719                         $this->msg( 'invert' )->text(),
 720                         'invert',
 721                         'nsinvert',
 722                         $opts['invert'],
 723                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 724                 ) . "</span>\n";
 725                 $namespaceForm .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 726                         $this->msg( 'namespace_association' )->text(),
 727                         'associated',
 728                         'nsassociated',
 729                         $opts['associated'],
 730                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 731                 ) . "</span>\n";
 732                 $form .= Html::rawElement(
 733                         'span',
 734                         [ 'class' => 'namespaceForm cloption' ],
 735                         $namespaceForm
 736                 );
 737
 738                 $form .= Xml::submitButton(
 739                         $this->msg( 'watchlist-submit' )->text(),
 740                         [ 'class' => 'cloption-submit' ]
 741                 ) . "\n";
 742                 foreach ( $hiddenFields as $key => $value ) {
 743                         $form .= Html::hidden( $key, $value ) . "\n";
 744                 }
 745                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 746                 $form .= Xml::closeElement( 'form' ) . "\n";
 747
 748                 // Insert a placeholder for RCFilters
 749                 if ( $this->isStructuredFilterUiEnabled() ) {
 750                         $rcfilterContainer = Html::element(
 751                                 'div',
 752                                 [ 'class' => 'rcfilters-container' ]
 753                         );
 754
 755                         $loadingContainer = Html::rawElement(
 756                                 'div',
 757                                 [ 'class' => 'rcfilters-spinner' ],
 758                                 Html::element(
 759                                         'div',
 760                                         [ 'class' => 'rcfilters-spinner-bounce' ]
 761                                 )
 762                         );
 763
 764                         // Wrap both with rcfilters-head
 765                         $this->getOutput()->addHTML(
 766                                 Html::rawElement(
 767                                         'div',
 768                                         [ 'class' => 'rcfilters-head' ],
 769                                         $rcfilterContainer . $form
 770                                 )
 771                         );
 772
 773                         // Add spinner
 774                         $this->getOutput()->addHTML( $loadingContainer );
 775                 } else {
 776                         $this->getOutput()->addHTML( $form );
 777                 }
 778
 779                 $this->setBottomText( $opts );
 780         }
 781
 782         function cutoffselector( $options ) {
 783                 // Cast everything to strings immediately, so that we know all of the values have the same
 784                 // precision, and can be compared with '==='. 2/24 has a few more decimal places than its
 785                 // default string representation, for example, and would confuse comparisons.
 786
 787                 // Misleadingly, the 'days' option supports hours too.
 788                 $days = array_map( 'strval', [ 1 / 24, 2 / 24, 6 / 24, 12 / 24, 1, 3, 7 ] );
 789
 790                 $userWatchlistOption = (string)$this->getUser()->getOption( 'watchlistdays' );
 791                 // add the user preference, if it isn't available already
 792                 if ( !in_array( $userWatchlistOption, $days ) && $userWatchlistOption !== '0' ) {
 793                         $days[] = $userWatchlistOption;
 794                 }
 795
 796                 $maxDays = (string)$this->maxDays;
 797                 // add the maximum possible value, if it isn't available already
 798                 if ( !in_array( $maxDays, $days ) ) {
 799                         $days[] = $maxDays;
 800                 }
 801
 802                 $selected = (string)$options['days'];
 803                 if ( $selected <= 0 ) {
 804                         $selected = $maxDays;
 805                 }
 806
 807                 // add the currently selected value, if it isn't available already
 808                 if ( !in_array( $selected, $days ) ) {
 809                         $days[] = $selected;
 810                 }
 811
 812                 $select = new XmlSelect( 'days', 'days', $selected );
 813
 814                 asort( $days );
 815                 foreach ( $days as $value ) {
 816                         if ( $value < 1 ) {
 817                                 $name = $this->msg( 'hours' )->numParams( $value * 24 )->text();
 818                         } else {
 819                                 $name = $this->msg( 'days' )->numParams( $value )->text();
 820                         }
 821                         $select->addOption( $name, $value );
 822                 }
 823
 824                 return $select->getHTML() . "\n<br />\n";
 825         }
 826
 827         function setTopText( FormOptions $opts ) {
 828                 $nondefaults = $opts->getChangedValues();
 829                 $form = '';
 830                 $user = $this->getUser();
 831
 832                 $numItems = $this->countItems();
 833                 $showUpdatedMarker = $this->getConfig()->get( 'ShowUpdatedMarker' );
 834
 835                 // Show watchlist header
 836                 $watchlistHeader = '';
 837                 if ( $numItems == 0 ) {
 838                         $watchlistHeader = $this->msg( 'nowatchlist' )->parse();
 839                 } else {
 840                         $watchlistHeader .= $this->msg( 'watchlist-details' )->numParams( $numItems )->parse() . "\n";
 841                         if ( $this->getConfig()->get( 'EnotifWatchlist' )
 842                                 && $user->getOption( 'enotifwatchlistpages' )
 843                         ) {
 844                                 $watchlistHeader .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 845                         }
 846                         if ( $showUpdatedMarker ) {
 847                                 $watchlistHeader .= $this->msg(
 848                                         $this->isStructuredFilterUiEnabled() ?
 849                                                 'rcfilters-watchlist-showupdated' :
 850                                                 'wlheader-showupdated'
 851                                 )->parse() . "\n";
 852                         }
 853                 }
 854                 $form .= Html::rawElement(
 855                         'div',
 856                         [ 'class' => 'watchlistDetails' ],
 857                         $watchlistHeader
 858                 );
 859
 860                 if ( $numItems > 0 && $showUpdatedMarker ) {
 861                         $form .= Xml::openElement( 'form', [ 'method' => 'post',
 862                                 'action' => $this->getPageTitle()->getLocalURL(),
 863                                 'id' => 'mw-watchlist-resetbutton' ] ) . "\n" .
 864                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(),
 865                                 [ 'name' => 'mw-watchlist-reset-submit' ] ) . "\n" .
 866                         Html::hidden( 'token', $user->getEditToken() ) . "\n" .
 867                         Html::hidden( 'reset', 'all' ) . "\n";
 868                         foreach ( $nondefaults as $key => $value ) {
 869                                 $form .= Html::hidden( $key, $value ) . "\n";
 870                         }
 871                         $form .= Xml::closeElement( 'form' ) . "\n";
 872                 }
 873
 874                 $this->getOutput()->addHTML( $form );
 875         }
 876
 877         protected function showHideCheck( $options, $message, $name, $value, $inStructuredUi ) {
 878                 $options[$name] = 1 - (int)$value;
 879
 880                 $attribs = [ 'class' => 'mw-input-with-label clshowhideoption cloption' ];
 881                 if ( $inStructuredUi ) {
 882                         $attribs[ 'data-feature-in-structured-ui' ] = true;
 883                 }
 884
 885                 return Html::rawElement(
 886                         'span',
 887                         $attribs,
 888                         Xml::checkLabel(
 889                                 $this->msg( $message, '' )->text(),
 890                                 $name,
 891                                 $name,
 892                                 (int)$value
 893                         )
 894                 );
 895         }
 896
 897         /**
 898          * Count the number of paired items on a user's watchlist.
 899          * The assumption made here is that when a subject page is watched a talk page is also watched.
 900          * Hence the number of individual items is halved.
 901          *
 902          * @return int
 903          */
 904         protected function countItems() {
 905                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 906                 $count = $store->countWatchedItems( $this->getUser() );
 907                 return floor( $count / 2 );
 908         }
 909
 910         function getDefaultLimit() {
 911                 return $this->getUser()->getIntOption( 'wllimit' );
 912         }
 913
 914         function getDefaultDays() {
 915                 return $this->getUser()->getIntOption( 'watchlistdays' );
 916         }
 917 }