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\IResultWrapper;
  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         protected static $savedQueriesPreferenceName = 'rcfilters-wl-saved-queries';
  36         protected static $daysPreferenceName = 'watchlistdays';
  37         protected static $limitPreferenceName = 'wllimit';
  38         protected static $collapsedPreferenceName = 'rcfilters-wl-collapsed';
  39
  40         /** @var float|int */
  41         private $maxDays;
  42         /** WatchedItemStore */
  43         private $watchStore;
  44
  45         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  46                 parent::__construct( $page, $restriction );
  47
  48                 $this->maxDays = $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 );
  49                 $this->watchStore = MediaWikiServices::getInstance()->getWatchedItemStore();
  50         }
  51
  52         public function doesWrites() {
  53                 return true;
  54         }
  55
  56         /**
  57          * Main execution point
  58          *
  59          * @param string $subpage
  60          */
  61         function execute( $subpage ) {
  62                 // Anons don't get a watchlist
  63                 $this->requireLogin( 'watchlistanontext' );
  64
  65                 $output = $this->getOutput();
  66                 $request = $this->getRequest();
  67                 $this->addHelpLink( 'Help:Watching pages' );
  68                 $output->addModuleStyles( [ 'mediawiki.special' ] );
  69                 $output->addModules( [
  70                         'mediawiki.special.recentchanges',
  71                         'mediawiki.special.watchlist',
  72                 ] );
  73
  74                 $mode = SpecialEditWatchlist::getMode( $request, $subpage );
  75                 if ( $mode !== false ) {
  76                         if ( $mode === SpecialEditWatchlist::EDIT_RAW ) {
  77                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'raw' );
  78                         } elseif ( $mode === SpecialEditWatchlist::EDIT_CLEAR ) {
  79                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'clear' );
  80                         } else {
  81                                 $title = SpecialPage::getTitleFor( 'EditWatchlist' );
  82                         }
  83
  84                         $output->redirect( $title->getLocalURL() );
  85
  86                         return;
  87                 }
  88
  89                 $this->checkPermissions();
  90
  91                 $user = $this->getUser();
  92                 $opts = $this->getOptions();
  93
  94                 $config = $this->getConfig();
  95                 if ( ( $config->get( 'EnotifWatchlist' ) || $config->get( 'ShowUpdatedMarker' ) )
  96                         && $request->getVal( 'reset' )
  97                         && $request->wasPosted()
  98                         && $user->matchEditToken( $request->getVal( 'token' ) )
  99                 ) {
 100                         $user->clearAllNotifications();
 101                         $output->redirect( $this->getPageTitle()->getFullURL( $opts->getChangedValues() ) );
 102
 103                         return;
 104                 }
 105
 106                 parent::execute( $subpage );
 107
 108                 if ( $this->isStructuredFilterUiEnabled() ) {
 109                         $output->addModuleStyles( [ 'mediawiki.rcfilters.highlightCircles.seenunseen.styles' ] );
 110                 }
 111         }
 112
 113         public static function checkStructuredFilterUiEnabled( Config $config, User $user ) {
 114                 return !$user->getOption( 'wlenhancedfilters-disable' );
 115         }
 116
 117         /**
 118          * Return an array of subpages that this special page will accept.
 119          *
 120          * @see also SpecialEditWatchlist::getSubpagesForPrefixSearch
 121          * @return string[] subpages
 122          */
 123         public function getSubpagesForPrefixSearch() {
 124                 return [
 125                         'clear',
 126                         'edit',
 127                         'raw',
 128                 ];
 129         }
 130
 131         /**
 132          * @inheritDoc
 133          */
 134         protected function transformFilterDefinition( array $filterDefinition ) {
 135                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 136                         $filterDefinition['showHide'] = 'wl' . $filterDefinition['showHideSuffix'];
 137                 }
 138
 139                 return $filterDefinition;
 140         }
 141
 142         /**
 143          * @inheritDoc
 144          */
 145         protected function registerFilters() {
 146                 parent::registerFilters();
 147
 148                 // legacy 'extended' filter
 149                 $this->registerFilterGroup( new ChangesListBooleanFilterGroup( [
 150                         'name' => 'extended-group',
 151                         'filters' => [
 152                                 [
 153                                         'name' => 'extended',
 154                                         'isReplacedInStructuredUi' => true,
 155                                         'activeValue' => false,
 156                                         'default' => $this->getUser()->getBoolOption( 'extendwatchlist' ),
 157                                         'queryCallable' => function ( $specialClassName, $ctx, $dbr, &$tables,
 158                                                         &$fields, &$conds, &$query_options, &$join_conds ) {
 159                                                 $nonRevisionTypes = [ RC_LOG ];
 160                                                 Hooks::run( 'SpecialWatchlistGetNonRevisionTypes', [ &$nonRevisionTypes ] );
 161                                                 if ( $nonRevisionTypes ) {
 162                                                         $conds[] = $dbr->makeList(
 163                                                                 [
 164                                                                         'rc_this_oldid=page_latest',
 165                                                                         'rc_type' => $nonRevisionTypes,
 166                                                                 ],
 167                                                                 LIST_OR
 168                                                         );
 169                                                 }
 170                                         },
 171                                 ]
 172                         ],
 173
 174                 ] ) );
 175
 176                 if ( $this->isStructuredFilterUiEnabled() ) {
 177                         $this->getFilterGroup( 'lastRevision' )
 178                                 ->getFilter( 'hidepreviousrevisions' )
 179                                 ->setDefault( !$this->getUser()->getBoolOption( 'extendwatchlist' ) );
 180                 }
 181
 182                 $this->registerFilterGroup( new ChangesListStringOptionsFilterGroup( [
 183                         'name' => 'watchlistactivity',
 184                         'title' => 'rcfilters-filtergroup-watchlistactivity',
 185                         'class' => ChangesListStringOptionsFilterGroup::class,
 186                         'priority' => 3,
 187                         'isFullCoverage' => true,
 188                         'filters' => [
 189                                 [
 190                                         'name' => 'unseen',
 191                                         'label' => 'rcfilters-filter-watchlistactivity-unseen-label',
 192                                         'description' => 'rcfilters-filter-watchlistactivity-unseen-description',
 193                                         'cssClassSuffix' => 'watchedunseen',
 194                                         'isRowApplicableCallable' => function ( $ctx, RecentChange $rc ) {
 195                                                 $changeTs = $rc->getAttribute( 'rc_timestamp' );
 196                                                 $lastVisitTs = $this->watchStore->getLatestNotificationTimestamp(
 197                                                         $rc->getAttribute( 'wl_notificationtimestamp' ),
 198                                                         $rc->getPerformer(),
 199                                                         $rc->getTitle()
 200                                                 );
 201                                                 return $lastVisitTs !== null && $changeTs >= $lastVisitTs;
 202                                         },
 203                                 ],
 204                                 [
 205                                         'name' => 'seen',
 206                                         'label' => 'rcfilters-filter-watchlistactivity-seen-label',
 207                                         'description' => 'rcfilters-filter-watchlistactivity-seen-description',
 208                                         'cssClassSuffix' => 'watchedseen',
 209                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
 210                                                 $changeTs = $rc->getAttribute( 'rc_timestamp' );
 211                                                 $lastVisitTs = $rc->getAttribute( 'wl_notificationtimestamp' );
 212                                                 return $lastVisitTs === null || $changeTs < $lastVisitTs;
 213                                         }
 214                                 ],
 215                         ],
 216                         'default' => ChangesListStringOptionsFilterGroup::NONE,
 217                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
 218                                         &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
 219                                 if ( $selectedValues === [ 'seen' ] ) {
 220                                         $conds[] = $dbr->makeList( [
 221                                                 'wl_notificationtimestamp IS NULL',
 222                                                 'rc_timestamp < wl_notificationtimestamp'
 223                                         ], LIST_OR );
 224                                 } elseif ( $selectedValues === [ 'unseen' ] ) {
 225                                         $conds[] = $dbr->makeList( [
 226                                                 'wl_notificationtimestamp IS NOT NULL',
 227                                                 'rc_timestamp >= wl_notificationtimestamp'
 228                                         ], LIST_AND );
 229                                 }
 230                         }
 231                 ] ) );
 232
 233                 $user = $this->getUser();
 234
 235                 $significance = $this->getFilterGroup( 'significance' );
 236                 $hideMinor = $significance->getFilter( 'hideminor' );
 237                 $hideMinor->setDefault( $user->getBoolOption( 'watchlisthideminor' ) );
 238
 239                 $automated = $this->getFilterGroup( 'automated' );
 240                 $hideBots = $automated->getFilter( 'hidebots' );
 241                 $hideBots->setDefault( $user->getBoolOption( 'watchlisthidebots' ) );
 242
 243                 $registration = $this->getFilterGroup( 'registration' );
 244                 $hideAnons = $registration->getFilter( 'hideanons' );
 245                 $hideAnons->setDefault( $user->getBoolOption( 'watchlisthideanons' ) );
 246                 $hideLiu = $registration->getFilter( 'hideliu' );
 247                 $hideLiu->setDefault( $user->getBoolOption( 'watchlisthideliu' ) );
 248
 249                 // Selecting both hideanons and hideliu on watchlist preferances
 250                 // gives mutually exclusive filters, so those are ignored
 251                 if ( $user->getBoolOption( 'watchlisthideanons' ) &&
 252                         !$user->getBoolOption( 'watchlisthideliu' )
 253                 ) {
 254                         $this->getFilterGroup( 'userExpLevel' )
 255                                 ->setDefault( 'registered' );
 256                 }
 257
 258                 if ( $user->getBoolOption( 'watchlisthideliu' ) &&
 259                         !$user->getBoolOption( 'watchlisthideanons' )
 260                 ) {
 261                         $this->getFilterGroup( 'userExpLevel' )
 262                                 ->setDefault( 'unregistered' );
 263                 }
 264
 265                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 266                 if ( $reviewStatus !== null ) {
 267                         // Conditional on feature being available and rights
 268                         if ( $user->getBoolOption( 'watchlisthidepatrolled' ) ) {
 269                                 $reviewStatus->setDefault( 'unpatrolled' );
 270                                 $legacyReviewStatus = $this->getFilterGroup( 'legacyReviewStatus' );
 271                                 $legacyHidePatrolled = $legacyReviewStatus->getFilter( 'hidepatrolled' );
 272                                 $legacyHidePatrolled->setDefault( true );
 273                         }
 274                 }
 275
 276                 $authorship = $this->getFilterGroup( 'authorship' );
 277                 $hideMyself = $authorship->getFilter( 'hidemyself' );
 278                 $hideMyself->setDefault( $user->getBoolOption( 'watchlisthideown' ) );
 279
 280                 $changeType = $this->getFilterGroup( 'changeType' );
 281                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 282                 if ( $hideCategorization !== null ) {
 283                         // Conditional on feature being available
 284                         $hideCategorization->setDefault( $user->getBoolOption( 'watchlisthidecategorization' ) );
 285                 }
 286         }
 287
 288         /**
 289          * Fetch values for a FormOptions object from the WebRequest associated with this instance.
 290          *
 291          * Maps old pre-1.23 request parameters Watchlist used to use (different from Recentchanges' ones)
 292          * to the current ones.
 293          *
 294          * @param FormOptions $opts
 295          * @return FormOptions
 296          */
 297         protected function fetchOptionsFromRequest( $opts ) {
 298                 static $compatibilityMap = [
 299                         'hideMinor' => 'hideminor',
 300                         'hideBots' => 'hidebots',
 301                         'hideAnons' => 'hideanons',
 302                         'hideLiu' => 'hideliu',
 303                         'hidePatrolled' => 'hidepatrolled',
 304                         'hideOwn' => 'hidemyself',
 305                 ];
 306
 307                 $params = $this->getRequest()->getValues();
 308                 foreach ( $compatibilityMap as $from => $to ) {
 309                         if ( isset( $params[$from] ) ) {
 310                                 $params[$to] = $params[$from];
 311                                 unset( $params[$from] );
 312                         }
 313                 }
 314
 315                 if ( $this->getRequest()->getVal( 'action' ) == 'submit' ) {
 316                         $allBooleansFalse = [];
 317
 318                         // If the user submitted the form, start with a baseline of "all
 319                         // booleans are false", then change the ones they checked.  This
 320                         // means we ignore the defaults.
 321
 322                         // This is how we handle the fact that HTML forms don't submit
 323                         // unchecked boxes.
 324                         foreach ( $this->getLegacyShowHideFilters() as $filter ) {
 325                                 $allBooleansFalse[ $filter->getName() ] = false;
 326                         }
 327
 328                         $params = $params + $allBooleansFalse;
 329                 }
 330
 331                 // Not the prettiest way to achieve this… FormOptions internally depends on data sanitization
 332                 // methods defined on WebRequest and removing this dependency would cause some code duplication.
 333                 $request = new DerivativeRequest( $this->getRequest(), $params );
 334                 $opts->fetchValuesFromRequest( $request );
 335
 336                 return $opts;
 337         }
 338
 339         /**
 340          * @inheritDoc
 341          */
 342         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 343                 $join_conds, FormOptions $opts
 344         ) {
 345                 $dbr = $this->getDB();
 346                 $user = $this->getUser();
 347
 348                 $rcQuery = RecentChange::getQueryInfo();
 349                 $tables = array_merge( $tables, $rcQuery['tables'], [ 'watchlist' ] );
 350                 $fields = array_merge( $rcQuery['fields'], $fields );
 351
 352                 $join_conds = array_merge(
 353                         [
 354                                 'watchlist' => [
 355                                         'JOIN',
 356                                         [
 357                                                 'wl_user' => $user->getId(),
 358                                                 'wl_namespace=rc_namespace',
 359                                                 'wl_title=rc_title'
 360                                         ],
 361                                 ],
 362                         ],
 363                         $rcQuery['joins'],
 364                         $join_conds
 365                 );
 366
 367                 $tables[] = 'page';
 368                 $fields[] = 'page_latest';
 369                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 370
 371                 $fields[] = 'wl_notificationtimestamp';
 372
 373                 // Log entries with DELETED_ACTION must not show up unless the user has
 374                 // the necessary rights.
 375                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 376                         $bitmask = LogPage::DELETED_ACTION;
 377                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 378                         $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 379                 } else {
 380                         $bitmask = 0;
 381                 }
 382                 if ( $bitmask ) {
 383                         $conds[] = $dbr->makeList( [
 384                                 'rc_type != ' . RC_LOG,
 385                                 $dbr->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 386                         ], LIST_OR );
 387                 }
 388
 389                 $tagFilter = $opts['tagfilter'] ? explode( '|', $opts['tagfilter'] ) : [];
 390                 ChangeTags::modifyDisplayQuery(
 391                         $tables,
 392                         $fields,
 393                         $conds,
 394                         $join_conds,
 395                         $query_options,
 396                         $tagFilter
 397                 );
 398
 399                 $this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts );
 400
 401                 if ( $this->areFiltersInConflict() ) {
 402                         return false;
 403                 }
 404
 405                 $orderByAndLimit = [
 406                         'ORDER BY' => 'rc_timestamp DESC',
 407                         'LIMIT' => $opts['limit']
 408                 ];
 409                 if ( in_array( 'DISTINCT', $query_options ) ) {
 410                         // ChangeTags::modifyDisplayQuery() adds DISTINCT when filtering on multiple tags.
 411                         // In order to prevent DISTINCT from causing query performance problems,
 412                         // we have to GROUP BY the primary key. This in turn requires us to add
 413                         // the primary key to the end of the ORDER BY, and the old ORDER BY to the
 414                         // start of the GROUP BY
 415                         $orderByAndLimit['ORDER BY'] = 'rc_timestamp DESC, rc_id DESC';
 416                         $orderByAndLimit['GROUP BY'] = 'rc_timestamp, rc_id';
 417                 }
 418                 // array_merge() is used intentionally here so that hooks can, should
 419                 // they so desire, override the ORDER BY / LIMIT condition(s)
 420                 $query_options = array_merge( $orderByAndLimit, $query_options );
 421
 422                 return $dbr->select(
 423                         $tables,
 424                         $fields,
 425                         $conds,
 426                         __METHOD__,
 427                         $query_options,
 428                         $join_conds
 429                 );
 430         }
 431
 432         /**
 433          * Return a IDatabase object for reading
 434          *
 435          * @return IDatabase
 436          */
 437         protected function getDB() {
 438                 return wfGetDB( DB_REPLICA, 'watchlist' );
 439         }
 440
 441         /**
 442          * Output feed links.
 443          */
 444         public function outputFeedLinks() {
 445                 $user = $this->getUser();
 446                 $wlToken = $user->getTokenFromOption( 'watchlisttoken' );
 447                 if ( $wlToken ) {
 448                         $this->addFeedLinks( [
 449                                 'action' => 'feedwatchlist',
 450                                 'allrev' => 1,
 451                                 'wlowner' => $user->getName(),
 452                                 'wltoken' => $wlToken,
 453                         ] );
 454                 }
 455         }
 456
 457         /**
 458          * Build and output the actual changes list.
 459          *
 460          * @param IResultWrapper $rows Database rows
 461          * @param FormOptions $opts
 462          */
 463         public function outputChangesList( $rows, $opts ) {
 464                 $dbr = $this->getDB();
 465                 $user = $this->getUser();
 466                 $output = $this->getOutput();
 467                 $services = MediaWikiServices::getInstance();
 468
 469                 # Show a message about replica DB lag, if applicable
 470                 $lag = $dbr->getSessionLagStatus()['lag'];
 471                 if ( $lag > 0 ) {
 472                         $output->showLagWarning( $lag );
 473                 }
 474
 475                 # If no rows to display, show message before try to render the list
 476                 if ( $rows->numRows() == 0 ) {
 477                         $output->wrapWikiMsg(
 478                                 "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
 479                         );
 480                         return;
 481                 }
 482
 483                 $dbr->dataSeek( $rows, 0 );
 484
 485                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 486                 $list->setWatchlistDivs();
 487                 $list->initChangesListRows( $rows );
 488                 if ( $user->getOption( 'watchlistunwatchlinks' ) ) {
 489                         $list->setChangeLinePrefixer( function ( RecentChange $rc, ChangesList $cl, $grouped ) {
 490                                 // Don't show unwatch link if the line is a grouped log entry using EnhancedChangesList,
 491                                 // since EnhancedChangesList groups log entries by performer rather than by target article
 492                                 if ( $rc->mAttribs['rc_type'] == RC_LOG && $cl instanceof EnhancedChangesList &&
 493                                         $grouped ) {
 494                                         return '';
 495                                 } else {
 496                                         return $this->getLinkRenderer()
 497                                                         ->makeKnownLink( $rc->getTitle(),
 498                                                                 $this->msg( 'watchlist-unwatch' )->text(), [
 499                                                                         'class' => 'mw-unwatch-link',
 500                                                                         'title' => $this->msg( 'tooltip-ca-unwatch' )->text()
 501                                                                 ], [ 'action' => 'unwatch' ] ) . "\u{00A0}";
 502                                 }
 503                         } );
 504                 }
 505                 $dbr->dataSeek( $rows, 0 );
 506
 507                 if ( $this->getConfig()->get( 'RCShowWatchingUsers' )
 508                         && $user->getOption( 'shownumberswatching' )
 509                 ) {
 510                         $watchedItemStore = $services->getWatchedItemStore();
 511                 }
 512
 513                 $s = $list->beginRecentChangesList();
 514
 515                 if ( $this->isStructuredFilterUiEnabled() ) {
 516                         $s .= $this->makeLegend();
 517                 }
 518
 519                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 520                 $counter = 1;
 521                 foreach ( $rows as $obj ) {
 522                         # Make RC entry
 523                         $rc = RecentChange::newFromRow( $obj );
 524
 525                         # Skip CatWatch entries for hidden cats based on user preference
 526                         if (
 527                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 528                                 !$userShowHiddenCats &&
 529                                 $rc->getParam( 'hidden-cat' )
 530                         ) {
 531                                 continue;
 532                         }
 533
 534                         $rc->counter = $counter++;
 535
 536                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 537                                 $updated = $obj->wl_notificationtimestamp;
 538                         } else {
 539                                 $updated = false;
 540                         }
 541
 542                         if ( isset( $watchedItemStore ) ) {
 543                                 $rcTitleValue = new TitleValue( (int)$obj->rc_namespace, $obj->rc_title );
 544                                 $rc->numberofWatchingusers = $watchedItemStore->countWatchers( $rcTitleValue );
 545                         } else {
 546                                 $rc->numberofWatchingusers = 0;
 547                         }
 548
 549                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 550                         if ( $changeLine !== false ) {
 551                                 $s .= $changeLine;
 552                         }
 553                 }
 554                 $s .= $list->endRecentChangesList();
 555
 556                 $output->addHTML( $s );
 557         }
 558
 559         /**
 560          * Set the text to be displayed above the changes
 561          *
 562          * @param FormOptions $opts
 563          * @param int $numRows Number of rows in the result to show after this header
 564          */
 565         public function doHeader( $opts, $numRows ) {
 566                 $user = $this->getUser();
 567                 $out = $this->getOutput();
 568
 569                 $out->addSubtitle(
 570                         $this->msg( 'watchlistfor2', $user->getName() )
 571                                 ->rawParams( SpecialEditWatchlist::buildTools(
 572                                         $this->getLanguage(),
 573                                         $this->getLinkRenderer()
 574                                 ) )
 575                 );
 576
 577                 $this->setTopText( $opts );
 578
 579                 $form = '';
 580
 581                 $form .= Xml::openElement( 'form', [
 582                         'method' => 'get',
 583                         'action' => wfScript(),
 584                         'id' => 'mw-watchlist-form'
 585                 ] );
 586                 $form .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
 587                 $form .= Xml::openElement(
 588                         'fieldset',
 589                         [ 'id' => 'mw-watchlist-options', 'class' => 'cloptions' ]
 590                 );
 591                 $form .= Xml::element(
 592                         'legend', null, $this->msg( 'watchlist-options' )->text()
 593                 );
 594
 595                 if ( !$this->isStructuredFilterUiEnabled() ) {
 596                         $form .= $this->makeLegend();
 597                 }
 598
 599                 $lang = $this->getLanguage();
 600                 $timestamp = wfTimestampNow();
 601                 $now = $lang->userTimeAndDate( $timestamp, $user );
 602                 $wlInfo = Html::rawElement(
 603                         'span',
 604                         [
 605                                 'class' => 'wlinfo',
 606                                 'data-params' => json_encode( [ 'from' => $timestamp, 'fromFormatted' => $now ] ),
 607                         ],
 608                         $this->msg( 'wlnote' )->numParams( $numRows, round( $opts['days'] * 24 ) )->params(
 609                                 $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user )
 610                         )->parse()
 611                 ) . "<br />\n";
 612
 613                 $nondefaults = $opts->getChangedValues();
 614                 $cutofflinks = Html::rawElement(
 615                         'span',
 616                         [ 'class' => 'cldays cloption' ],
 617                         $this->msg( 'wlshowtime' ) . ' ' . $this->cutoffselector( $opts )
 618                 );
 619
 620                 # Spit out some control panel links
 621                 $links = [];
 622                 $namesOfDisplayedFilters = [];
 623                 foreach ( $this->getLegacyShowHideFilters() as $filterName => $filter ) {
 624                         $namesOfDisplayedFilters[] = $filterName;
 625                         $links[] = $this->showHideCheck(
 626                                 $nondefaults,
 627                                 $filter->getShowHide(),
 628                                 $filterName,
 629                                 $opts[ $filterName ],
 630                                 $filter->isFeatureAvailableOnStructuredUi( $this )
 631                         );
 632                 }
 633
 634                 $hiddenFields = $nondefaults;
 635                 $hiddenFields['action'] = 'submit';
 636                 unset( $hiddenFields['namespace'] );
 637                 unset( $hiddenFields['invert'] );
 638                 unset( $hiddenFields['associated'] );
 639                 unset( $hiddenFields['days'] );
 640                 foreach ( $namesOfDisplayedFilters as $filterName ) {
 641                         unset( $hiddenFields[$filterName] );
 642                 }
 643
 644                 # Namespace filter and put the whole form together.
 645                 $form .= $wlInfo;
 646                 $form .= $cutofflinks;
 647                 $form .= Html::rawElement(
 648                         'span',
 649                         [ 'class' => 'clshowhide' ],
 650                         $this->msg( 'watchlist-hide' ) .
 651                         $this->msg( 'colon-separator' )->escaped() .
 652                         implode( ' ', $links )
 653                 );
 654                 $form .= "\n<br />\n";
 655
 656                 $namespaceForm = Html::namespaceSelector(
 657                         [
 658                                 'selected' => $opts['namespace'],
 659                                 'all' => '',
 660                                 'label' => $this->msg( 'namespace' )->text(),
 661                                 'in-user-lang' => true,
 662                         ], [
 663                                 'name' => 'namespace',
 664                                 'id' => 'namespace',
 665                                 'class' => 'namespaceselector',
 666                         ]
 667                 ) . "\n";
 668                 $hidden = $opts['namespace'] === '' ? ' mw-input-hidden' : '';
 669                 $namespaceForm .= '<span class="mw-input-with-label' . $hidden . '">' . Xml::checkLabel(
 670                         $this->msg( 'invert' )->text(),
 671                         'invert',
 672                         'nsinvert',
 673                         $opts['invert'],
 674                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 675                 ) . "</span>\n";
 676                 $namespaceForm .= '<span class="mw-input-with-label' . $hidden . '">' . Xml::checkLabel(
 677                         $this->msg( 'namespace_association' )->text(),
 678                         'associated',
 679                         'nsassociated',
 680                         $opts['associated'],
 681                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 682                 ) . "</span>\n";
 683                 $form .= Html::rawElement(
 684                         'span',
 685                         [ 'class' => 'namespaceForm cloption' ],
 686                         $namespaceForm
 687                 );
 688
 689                 $form .= Xml::submitButton(
 690                         $this->msg( 'watchlist-submit' )->text(),
 691                         [ 'class' => 'cloption-submit' ]
 692                 ) . "\n";
 693                 foreach ( $hiddenFields as $key => $value ) {
 694                         $form .= Html::hidden( $key, $value ) . "\n";
 695                 }
 696                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 697                 $form .= Xml::closeElement( 'form' ) . "\n";
 698
 699                 // Insert a placeholder for RCFilters
 700                 if ( $this->isStructuredFilterUiEnabled() ) {
 701                         $rcfilterContainer = Html::element(
 702                                 'div',
 703                                 // TODO: Remove deprecated rcfilters-container class
 704                                 [ 'class' => 'rcfilters-container mw-rcfilters-container' ]
 705                         );
 706
 707                         $loadingContainer = Html::rawElement(
 708                                 'div',
 709                                 [ 'class' => 'mw-rcfilters-spinner' ],
 710                                 Html::element(
 711                                         'div',
 712                                         [ 'class' => 'mw-rcfilters-spinner-bounce' ]
 713                                 )
 714                         );
 715
 716                         // Wrap both with rcfilters-head
 717                         $this->getOutput()->addHTML(
 718                                 Html::rawElement(
 719                                         'div',
 720                                         // TODO: Remove deprecated rcfilters-head class
 721                                         [ 'class' => 'rcfilters-head mw-rcfilters-head' ],
 722                                         $rcfilterContainer . $form
 723                                 )
 724                         );
 725
 726                         // Add spinner
 727                         $this->getOutput()->addHTML( $loadingContainer );
 728                 } else {
 729                         $this->getOutput()->addHTML( $form );
 730                 }
 731
 732                 $this->setBottomText( $opts );
 733         }
 734
 735         function cutoffselector( $options ) {
 736                 $selected = (float)$options['days'];
 737                 if ( $selected <= 0 ) {
 738                         $selected = $this->maxDays;
 739                 }
 740
 741                 $selectedHours = round( $selected * 24 );
 742
 743                 $hours = array_unique( array_filter( [
 744                         1,
 745                         2,
 746                         6,
 747                         12,
 748                         24,
 749                         72,
 750                         168,
 751                         24 * (float)$this->getUser()->getOption( 'watchlistdays', 0 ),
 752                         24 * $this->maxDays,
 753                         $selectedHours
 754                 ] ) );
 755                 asort( $hours );
 756
 757                 $select = new XmlSelect( 'days', 'days', (float)( $selectedHours / 24 ) );
 758
 759                 foreach ( $hours as $value ) {
 760                         if ( $value < 24 ) {
 761                                 $name = $this->msg( 'hours' )->numParams( $value )->text();
 762                         } else {
 763                                 $name = $this->msg( 'days' )->numParams( $value / 24 )->text();
 764                         }
 765                         $select->addOption( $name, (float)( $value / 24 ) );
 766                 }
 767
 768                 return $select->getHTML() . "\n<br />\n";
 769         }
 770
 771         function setTopText( FormOptions $opts ) {
 772                 $nondefaults = $opts->getChangedValues();
 773                 $form = '';
 774                 $user = $this->getUser();
 775
 776                 $numItems = $this->countItems();
 777                 $showUpdatedMarker = $this->getConfig()->get( 'ShowUpdatedMarker' );
 778
 779                 // Show watchlist header
 780                 $watchlistHeader = '';
 781                 if ( $numItems == 0 ) {
 782                         $watchlistHeader = $this->msg( 'nowatchlist' )->parse();
 783                 } else {
 784                         $watchlistHeader .= $this->msg( 'watchlist-details' )->numParams( $numItems )->parse() . "\n";
 785                         if ( $this->getConfig()->get( 'EnotifWatchlist' )
 786                                 && $user->getOption( 'enotifwatchlistpages' )
 787                         ) {
 788                                 $watchlistHeader .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 789                         }
 790                         if ( $showUpdatedMarker ) {
 791                                 $watchlistHeader .= $this->msg(
 792                                         $this->isStructuredFilterUiEnabled() ?
 793                                                 'rcfilters-watchlist-showupdated' :
 794                                                 'wlheader-showupdated'
 795                                 )->parse() . "\n";
 796                         }
 797                 }
 798                 $form .= Html::rawElement(
 799                         'div',
 800                         [ 'class' => 'watchlistDetails' ],
 801                         $watchlistHeader
 802                 );
 803
 804                 if ( $numItems > 0 && $showUpdatedMarker ) {
 805                         $form .= Xml::openElement( 'form', [ 'method' => 'post',
 806                                 'action' => $this->getPageTitle()->getLocalURL(),
 807                                 'id' => 'mw-watchlist-resetbutton' ] ) . "\n" .
 808                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(),
 809                                 [ 'name' => 'mw-watchlist-reset-submit' ] ) . "\n" .
 810                         Html::hidden( 'token', $user->getEditToken() ) . "\n" .
 811                         Html::hidden( 'reset', 'all' ) . "\n";
 812                         foreach ( $nondefaults as $key => $value ) {
 813                                 $form .= Html::hidden( $key, $value ) . "\n";
 814                         }
 815                         $form .= Xml::closeElement( 'form' ) . "\n";
 816                 }
 817
 818                 $this->getOutput()->addHTML( $form );
 819         }
 820
 821         protected function showHideCheck( $options, $message, $name, $value, $inStructuredUi ) {
 822                 $options[$name] = 1 - (int)$value;
 823
 824                 $attribs = [ 'class' => 'mw-input-with-label clshowhideoption cloption' ];
 825                 if ( $inStructuredUi ) {
 826                         $attribs[ 'data-feature-in-structured-ui' ] = true;
 827                 }
 828
 829                 return Html::rawElement(
 830                         'span',
 831                         $attribs,
 832                         // not using Html::checkLabel because that would escape the contents
 833                         Html::check( $name, (int)$value, [ 'id' => $name ] ) . Html::rawElement(
 834                                 'label',
 835                                 $attribs + [ 'for' => $name ],
 836                                 // <nowiki/> at beginning to avoid messages with "$1 ..." being parsed as pre tags
 837                                 $this->msg( $message, '<nowiki/>' )->parse()
 838                         )
 839                 );
 840         }
 841
 842         /**
 843          * Count the number of paired items on a user's watchlist.
 844          * The assumption made here is that when a subject page is watched a talk page is also watched.
 845          * Hence the number of individual items is halved.
 846          *
 847          * @return int
 848          */
 849         protected function countItems() {
 850                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 851                 $count = $store->countWatchedItems( $this->getUser() );
 852                 return floor( $count / 2 );
 853         }
 854 }