includes/specials/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  * Implements Special:Recentchanges
   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\FakeResultWrapper;
  27
  28 /**
  29  * A special page that lists last changes made to the wiki
  30  *
  31  * @ingroup SpecialPage
  32  */
  33 class SpecialRecentChanges extends ChangesListSpecialPage {
  34
  35         private $watchlistFilterGroupDefinition;
  36
  37         // @codingStandardsIgnoreStart Needed "useless" override to change parameters.
  38         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  39                 parent::__construct( $name, $restriction );
  40
  41                 $this->watchlistFilterGroupDefinition = [
  42                         'name' => 'watchlist',
  43                         'title' => 'rcfilters-filtergroup-watchlist',
  44                         'class' => ChangesListStringOptionsFilterGroup::class,
  45                         'priority' => -9,
  46                         'isFullCoverage' => true,
  47                         'filters' => [
  48                                 [
  49                                         'name' => 'watched',
  50                                         'label' => 'rcfilters-filter-watchlist-watched-label',
  51                                         'description' => 'rcfilters-filter-watchlist-watched-description',
  52                                         'cssClassSuffix' => 'watched',
  53                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  54                                                 return $rc->getAttribute( 'wl_user' );
  55                                         }
  56                                 ],
  57                                 [
  58                                         'name' => 'watchednew',
  59                                         'label' => 'rcfilters-filter-watchlist-watchednew-label',
  60                                         'description' => 'rcfilters-filter-watchlist-watchednew-description',
  61                                         'cssClassSuffix' => 'watchednew',
  62                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  63                                                 return $rc->getAttribute( 'wl_user' ) &&
  64                                                         $rc->getAttribute( 'rc_timestamp' ) &&
  65                                                         $rc->getAttribute( 'wl_notificationtimestamp' ) &&
  66                                                         $rc->getAttribute( 'rc_timestamp' ) >= $rc->getAttribute( 'wl_notificationtimestamp' );
  67                                         },
  68                                 ],
  69                                 [
  70                                         'name' => 'notwatched',
  71                                         'label' => 'rcfilters-filter-watchlist-notwatched-label',
  72                                         'description' => 'rcfilters-filter-watchlist-notwatched-description',
  73                                         'cssClassSuffix' => 'notwatched',
  74                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  75                                                 return $rc->getAttribute( 'wl_user' ) === null;
  76                                         },
  77                                 ]
  78                         ],
  79                         'default' => ChangesListStringOptionsFilterGroup::NONE,
  80                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
  81                                 &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
  82                                 sort( $selectedValues );
  83                                 $notwatchedCond = 'wl_user IS NULL';
  84                                 $watchedCond = 'wl_user IS NOT NULL';
  85                                 $newCond = 'rc_timestamp >= wl_notificationtimestamp';
  86
  87                                 if ( $selectedValues === [ 'notwatched' ] ) {
  88                                         $conds[] = $notwatchedCond;
  89                                         return;
  90                                 }
  91
  92                                 if ( $selectedValues === [ 'watched' ] ) {
  93                                         $conds[] = $watchedCond;
  94                                         return;
  95                                 }
  96
  97                                 if ( $selectedValues === [ 'watchednew' ] ) {
  98                                         $conds[] = $dbr->makeList( [
  99                                                 $watchedCond,
 100                                                 $newCond
 101                                         ], LIST_AND );
 102                                         return;
 103                                 }
 104
 105                                 if ( $selectedValues === [ 'notwatched', 'watched' ] ) {
 106                                         // no filters
 107                                         return;
 108                                 }
 109
 110                                 if ( $selectedValues === [ 'notwatched', 'watchednew' ] ) {
 111                                         $conds[] = $dbr->makeList( [
 112                                                 $notwatchedCond,
 113                                                 $dbr->makeList( [
 114                                                         $watchedCond,
 115                                                         $newCond
 116                                                 ], LIST_AND )
 117                                         ], LIST_OR );
 118                                         return;
 119                                 }
 120
 121                                 if ( $selectedValues === [ 'watched', 'watchednew' ] ) {
 122                                         $conds[] = $watchedCond;
 123                                         return;
 124                                 }
 125
 126                                 if ( $selectedValues === [ 'notwatched', 'watched', 'watchednew' ] ) {
 127                                         // no filters
 128                                         return;
 129                                 }
 130                         }
 131                 ];
 132         }
 133         // @codingStandardsIgnoreEnd
 134
 135         /**
 136          * Main execution point
 137          *
 138          * @param string $subpage
 139          */
 140         public function execute( $subpage ) {
 141                 global $wgStructuredChangeFiltersEnableSaving,
 142                         $wgStructuredChangeFiltersEnableExperimentalViews;
 143
 144                 // Backwards-compatibility: redirect to new feed URLs
 145                 $feedFormat = $this->getRequest()->getVal( 'feed' );
 146                 if ( !$this->including() && $feedFormat ) {
 147                         $query = $this->getFeedQuery();
 148                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
 149                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
 150
 151                         return;
 152                 }
 153
 154                 // 10 seconds server-side caching max
 155                 $out = $this->getOutput();
 156                 $out->setCdnMaxage( 10 );
 157                 // Check if the client has a cached version
 158                 $lastmod = $this->checkLastModified();
 159                 if ( $lastmod === false ) {
 160                         return;
 161                 }
 162
 163                 $this->addHelpLink(
 164                         '//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Recent_changes',
 165                         true
 166                 );
 167                 parent::execute( $subpage );
 168
 169                 if ( $this->isStructuredFilterUiEnabled() ) {
 170                         $jsData = $this->getStructuredFilterJsData();
 171
 172                         $messages = [];
 173                         foreach ( $jsData['messageKeys'] as $key ) {
 174                                 $messages[$key] = $this->msg( $key )->plain();
 175                         }
 176
 177                         $out->addHTML(
 178                                 ResourceLoader::makeInlineScript(
 179                                         ResourceLoader::makeMessageSetScript( $messages )
 180                                 )
 181                         );
 182
 183                         $out->addJsConfigVars( 'wgStructuredChangeFilters', $jsData['groups'] );
 184                         $out->addJsConfigVars(
 185                                 'wgStructuredChangeFiltersEnableSaving',
 186                                 $wgStructuredChangeFiltersEnableSaving
 187                         );
 188                         $out->addJsConfigVars(
 189                                 'wgStructuredChangeFiltersEnableExperimentalViews',
 190                                 $wgStructuredChangeFiltersEnableExperimentalViews
 191                         );
 192                         $out->addJsConfigVars(
 193                                 'wgRCFiltersChangeTags',
 194                                 $this->buildChangeTagList()
 195                         );
 196                 }
 197         }
 198
 199         /**
 200          * Fetch the change tags list for the front end
 201          *
 202          * @return Array Tag data
 203          */
 204         protected function buildChangeTagList() {
 205                 function stripAllHtml( $input ) {
 206                         return trim( html_entity_decode( strip_tags( $input ) ) );
 207                 }
 208
 209                 $explicitlyDefinedTags = array_fill_keys( ChangeTags::listExplicitlyDefinedTags(), 0 );
 210                 $softwareActivatedTags = array_fill_keys( ChangeTags::listSoftwareActivatedTags(), 0 );
 211                 $tagStats = ChangeTags::tagUsageStatistics();
 212
 213                 $tagHitCounts = array_merge( $explicitlyDefinedTags, $softwareActivatedTags, $tagStats );
 214
 215                 // Sort by hits
 216                 arsort( $tagHitCounts );
 217
 218                 // Build the list and data
 219                 $result = [];
 220                 foreach ( $tagHitCounts as $tagName => $hits ) {
 221                         if (
 222                                 // Only get active tags
 223                                 isset( $explicitlyDefinedTags[ $tagName ] ) ||
 224                                 isset( $softwareActivatedTags[ $tagName ] )
 225                         ) {
 226                                 // Parse description
 227                                 $desc = ChangeTags::tagLongDescriptionMessage( $tagName, $this->getContext() );
 228
 229                                 $result[] = [
 230                                         'name' => $tagName,
 231                                         'label' => stripAllHtml( ChangeTags::tagDescription( $tagName, $this->getContext() ) ),
 232                                         'description' => $desc ? stripAllHtml( $desc->parse() ) : '',
 233                                         'cssClass' => Sanitizer::escapeClass( 'mw-tag-' . $tagName ),
 234                                         'hits' => $hits,
 235                                 ];
 236                         }
 237                 }
 238
 239                 return $result;
 240         }
 241
 242         /**
 243          * @inheritdoc
 244          */
 245         protected function transformFilterDefinition( array $filterDefinition ) {
 246                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 247                         $filterDefinition['showHide'] = 'rc' . $filterDefinition['showHideSuffix'];
 248                 }
 249
 250                 return $filterDefinition;
 251         }
 252
 253         /**
 254          * @inheritdoc
 255          */
 256         protected function registerFilters() {
 257                 parent::registerFilters();
 258
 259                 if (
 260                         !$this->including() &&
 261                         $this->getUser()->isLoggedIn() &&
 262                         $this->getUser()->isAllowed( 'viewmywatchlist' )
 263                 ) {
 264                         $this->registerFiltersFromDefinitions( [ $this->watchlistFilterGroupDefinition ] );
 265                         $watchlistGroup = $this->getFilterGroup( 'watchlist' );
 266                         $watchlistGroup->getFilter( 'watched' )->setAsSupersetOf(
 267                                 $watchlistGroup->getFilter( 'watchednew' )
 268                         );
 269                 }
 270
 271                 $user = $this->getUser();
 272
 273                 $significance = $this->getFilterGroup( 'significance' );
 274                 $hideMinor = $significance->getFilter( 'hideminor' );
 275                 $hideMinor->setDefault( $user->getBoolOption( 'hideminor' ) );
 276
 277                 $automated = $this->getFilterGroup( 'automated' );
 278                 $hideBots = $automated->getFilter( 'hidebots' );
 279                 $hideBots->setDefault( true );
 280
 281                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 282                 if ( $reviewStatus !== null ) {
 283                         // Conditional on feature being available and rights
 284                         $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 285                         $hidePatrolled->setDefault( $user->getBoolOption( 'hidepatrolled' ) );
 286                 }
 287
 288                 $changeType = $this->getFilterGroup( 'changeType' );
 289                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 290                 if ( $hideCategorization !== null ) {
 291                         // Conditional on feature being available
 292                         $hideCategorization->setDefault( $user->getBoolOption( 'hidecategorization' ) );
 293                 }
 294         }
 295
 296         /**
 297          * Get a FormOptions object containing the default options
 298          *
 299          * @return FormOptions
 300          */
 301         public function getDefaultOptions() {
 302                 $opts = parent::getDefaultOptions();
 303                 $user = $this->getUser();
 304
 305                 $opts->add( 'days', $user->getIntOption( 'rcdays' ) );
 306                 $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
 307                 $opts->add( 'from', '' );
 308
 309                 $opts->add( 'categories', '' );
 310                 $opts->add( 'categories_any', false );
 311                 $opts->add( 'tagfilter', '' );
 312
 313                 return $opts;
 314         }
 315
 316         /**
 317          * Get all custom filters
 318          *
 319          * @return array Map of filter URL param names to properties (msg/default)
 320          */
 321         protected function getCustomFilters() {
 322                 if ( $this->customFilters === null ) {
 323                         $this->customFilters = parent::getCustomFilters();
 324                         Hooks::run( 'SpecialRecentChangesFilters', [ $this, &$this->customFilters ], '1.23' );
 325                 }
 326
 327                 return $this->customFilters;
 328         }
 329
 330         /**
 331          * Process $par and put options found in $opts. Used when including the page.
 332          *
 333          * @param string $par
 334          * @param FormOptions $opts
 335          */
 336         public function parseParameters( $par, FormOptions $opts ) {
 337                 parent::parseParameters( $par, $opts );
 338
 339                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 340                 foreach ( $bits as $bit ) {
 341                         if ( is_numeric( $bit ) ) {
 342                                 $opts['limit'] = $bit;
 343                         }
 344
 345                         $m = [];
 346                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 347                                 $opts['limit'] = $m[1];
 348                         }
 349                         if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 350                                 $opts['days'] = $m[1];
 351                         }
 352                         if ( preg_match( '/^namespace=(.*)$/', $bit, $m ) ) {
 353                                 $opts['namespace'] = $m[1];
 354                         }
 355                         if ( preg_match( '/^tagfilter=(.*)$/', $bit, $m ) ) {
 356                                 $opts['tagfilter'] = $m[1];
 357                         }
 358                 }
 359         }
 360
 361         public function validateOptions( FormOptions $opts ) {
 362                 $opts->validateIntBounds( 'limit', 0, 5000 );
 363                 parent::validateOptions( $opts );
 364         }
 365
 366         /**
 367          * @inheritdoc
 368          */
 369         protected function buildQuery( &$tables, &$fields, &$conds,
 370                 &$query_options, &$join_conds, FormOptions $opts
 371         ) {
 372                 $dbr = $this->getDB();
 373                 parent::buildQuery( $tables, $fields, $conds,
 374                         $query_options, $join_conds, $opts );
 375
 376                 // Calculate cutoff
 377                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 378                 $cutoff_unixtime = $cutoff_unixtime - ( $cutoff_unixtime % 86400 );
 379                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 380
 381                 $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
 382                 if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
 383                         $cutoff = $dbr->timestamp( $opts['from'] );
 384                 } else {
 385                         $opts->reset( 'from' );
 386                 }
 387
 388                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 389         }
 390
 391         /**
 392          * @inheritdoc
 393          */
 394         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 395                 $join_conds, FormOptions $opts
 396         ) {
 397                 $dbr = $this->getDB();
 398                 $user = $this->getUser();
 399
 400                 $tables[] = 'recentchanges';
 401                 $fields = array_merge( RecentChange::selectFields(), $fields );
 402
 403                 // JOIN on watchlist for users
 404                 if ( $user->isLoggedIn() && $user->isAllowed( 'viewmywatchlist' ) ) {
 405                         $tables[] = 'watchlist';
 406                         $fields[] = 'wl_user';
 407                         $fields[] = 'wl_notificationtimestamp';
 408                         $join_conds['watchlist'] = [ 'LEFT JOIN', [
 409                                 'wl_user' => $user->getId(),
 410                                 'wl_title=rc_title',
 411                                 'wl_namespace=rc_namespace'
 412                         ] ];
 413                 }
 414
 415                 // JOIN on page, used for 'last revision' filter highlight
 416                 $tables[] = 'page';
 417                 $fields[] = 'page_latest';
 418                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 419
 420                 ChangeTags::modifyDisplayQuery(
 421                         $tables,
 422                         $fields,
 423                         $conds,
 424                         $join_conds,
 425                         $query_options,
 426                         $opts['tagfilter']
 427                 );
 428
 429                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 430                         $opts )
 431                 ) {
 432                         return false;
 433                 }
 434
 435                 if ( $this->areFiltersInConflict() ) {
 436                         return false;
 437                 }
 438
 439                 // array_merge() is used intentionally here so that hooks can, should
 440                 // they so desire, override the ORDER BY / LIMIT condition(s); prior to
 441                 // MediaWiki 1.26 this used to use the plus operator instead, which meant
 442                 // that extensions weren't able to change these conditions
 443                 $query_options = array_merge( [
 444                         'ORDER BY' => 'rc_timestamp DESC',
 445                         'LIMIT' => $opts['limit'] ], $query_options );
 446                 $rows = $dbr->select(
 447                         $tables,
 448                         $fields,
 449                         // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 450                         // knowledge to use an index merge if it wants (it may use some other index though).
 451                         $conds + [ 'rc_new' => [ 0, 1 ] ],
 452                         __METHOD__,
 453                         $query_options,
 454                         $join_conds
 455                 );
 456
 457                 // Build the final data
 458                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 459                         $this->filterByCategories( $rows, $opts );
 460                 }
 461
 462                 return $rows;
 463         }
 464
 465         protected function runMainQueryHook( &$tables, &$fields, &$conds,
 466                 &$query_options, &$join_conds, $opts
 467         ) {
 468                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 469                         && Hooks::run(
 470                                 'SpecialRecentChangesQuery',
 471                                 [ &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ],
 472                                 '1.23'
 473                         );
 474         }
 475
 476         protected function getDB() {
 477                 return wfGetDB( DB_REPLICA, 'recentchanges' );
 478         }
 479
 480         public function outputFeedLinks() {
 481                 $this->addFeedLinks( $this->getFeedQuery() );
 482         }
 483
 484         /**
 485          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 486          *
 487          * @return array
 488          */
 489         protected function getFeedQuery() {
 490                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 491                         // API handles empty parameters in a different way
 492                         return $value !== '';
 493                 } );
 494                 $query['action'] = 'feedrecentchanges';
 495                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
 496                 if ( $query['limit'] > $feedLimit ) {
 497                         $query['limit'] = $feedLimit;
 498                 }
 499
 500                 return $query;
 501         }
 502
 503         /**
 504          * Build and output the actual changes list.
 505          *
 506          * @param ResultWrapper $rows Database rows
 507          * @param FormOptions $opts
 508          */
 509         public function outputChangesList( $rows, $opts ) {
 510                 $limit = $opts['limit'];
 511
 512                 $showWatcherCount = $this->getConfig()->get( 'RCShowWatchingUsers' )
 513                         && $this->getUser()->getOption( 'shownumberswatching' );
 514                 $watcherCache = [];
 515
 516                 $dbr = $this->getDB();
 517
 518                 $counter = 1;
 519                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 520                 $list->initChangesListRows( $rows );
 521
 522                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 523                 $rclistOutput = $list->beginRecentChangesList();
 524                 if ( $this->isStructuredFilterUiEnabled() ) {
 525                         $rclistOutput .= $this->makeLegend();
 526                 }
 527
 528                 foreach ( $rows as $obj ) {
 529                         if ( $limit == 0 ) {
 530                                 break;
 531                         }
 532                         $rc = RecentChange::newFromRow( $obj );
 533
 534                         # Skip CatWatch entries for hidden cats based on user preference
 535                         if (
 536                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 537                                 !$userShowHiddenCats &&
 538                                 $rc->getParam( 'hidden-cat' )
 539                         ) {
 540                                 continue;
 541                         }
 542
 543                         $rc->counter = $counter++;
 544                         # Check if the page has been updated since the last visit
 545                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' )
 546                                 && !empty( $obj->wl_notificationtimestamp )
 547                         ) {
 548                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 549                         } else {
 550                                 $rc->notificationtimestamp = false; // Default
 551                         }
 552                         # Check the number of users watching the page
 553                         $rc->numberofWatchingusers = 0; // Default
 554                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 555                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 556                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 557                                                 MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchers(
 558                                                         new TitleValue( (int)$obj->rc_namespace, $obj->rc_title )
 559                                                 );
 560                                 }
 561                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 562                         }
 563
 564                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 565                         if ( $changeLine !== false ) {
 566                                 $rclistOutput .= $changeLine;
 567                                 --$limit;
 568                         }
 569                 }
 570                 $rclistOutput .= $list->endRecentChangesList();
 571
 572                 if ( $rows->numRows() === 0 ) {
 573                         $this->outputNoResults();
 574                         if ( !$this->including() ) {
 575                                 $this->getOutput()->setStatusCode( 404 );
 576                         }
 577                 } else {
 578                         $this->getOutput()->addHTML( $rclistOutput );
 579                 }
 580         }
 581
 582         /**
 583          * Set the text to be displayed above the changes
 584          *
 585          * @param FormOptions $opts
 586          * @param int $numRows Number of rows in the result to show after this header
 587          */
 588         public function doHeader( $opts, $numRows ) {
 589                 $this->setTopText( $opts );
 590
 591                 $defaults = $opts->getAllValues();
 592                 $nondefaults = $opts->getChangedValues();
 593
 594                 $panel = [];
 595                 if ( !$this->isStructuredFilterUiEnabled() ) {
 596                         $panel[] = $this->makeLegend();
 597                 }
 598                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 599                 $panel[] = '<hr />';
 600
 601                 $extraOpts = $this->getExtraOptions( $opts );
 602                 $extraOptsCount = count( $extraOpts );
 603                 $count = 0;
 604                 $submit = ' ' . Xml::submitButton( $this->msg( 'recentchanges-submit' )->text() );
 605
 606                 $out = Xml::openElement( 'table', [ 'class' => 'mw-recentchanges-table' ] );
 607                 foreach ( $extraOpts as $name => $optionRow ) {
 608                         # Add submit button to the last row only
 609                         ++$count;
 610                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 611
 612                         $out .= Xml::openElement( 'tr' );
 613                         if ( is_array( $optionRow ) ) {
 614                                 $out .= Xml::tags(
 615                                         'td',
 616                                         [ 'class' => 'mw-label mw-' . $name . '-label' ],
 617                                         $optionRow[0]
 618                                 );
 619                                 $out .= Xml::tags(
 620                                         'td',
 621                                         [ 'class' => 'mw-input' ],
 622                                         $optionRow[1] . $addSubmit
 623                                 );
 624                         } else {
 625                                 $out .= Xml::tags(
 626                                         'td',
 627                                         [ 'class' => 'mw-input', 'colspan' => 2 ],
 628                                         $optionRow . $addSubmit
 629                                 );
 630                         }
 631                         $out .= Xml::closeElement( 'tr' );
 632                 }
 633                 $out .= Xml::closeElement( 'table' );
 634
 635                 $unconsumed = $opts->getUnconsumedValues();
 636                 foreach ( $unconsumed as $key => $value ) {
 637                         $out .= Html::hidden( $key, $value );
 638                 }
 639
 640                 $t = $this->getPageTitle();
 641                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 642                 $form = Xml::tags( 'form', [ 'action' => wfScript() ], $out );
 643                 $panel[] = $form;
 644                 $panelString = implode( "\n", $panel );
 645
 646                 $rcoptions = Xml::fieldset(
 647                         $this->msg( 'recentchanges-legend' )->text(),
 648                         $panelString,
 649                         [ 'class' => 'rcoptions' ]
 650                 );
 651
 652                 // Insert a placeholder for RCFilters
 653                 if ( $this->getUser()->getOption( 'rcenhancedfilters' ) ) {
 654                         $rcfilterContainer = Html::element(
 655                                 'div',
 656                                 [ 'class' => 'rcfilters-container' ]
 657                         );
 658
 659                         // Wrap both with rcfilters-head
 660                         $this->getOutput()->addHTML(
 661                                 Html::rawElement(
 662                                         'div',
 663                                         [ 'class' => 'rcfilters-head' ],
 664                                         $rcfilterContainer . $rcoptions
 665                                 )
 666                         );
 667                 } else {
 668                         $this->getOutput()->addHTML( $rcoptions );
 669                 }
 670
 671                 $this->setBottomText( $opts );
 672         }
 673
 674         /**
 675          * Send the text to be displayed above the options
 676          *
 677          * @param FormOptions $opts Unused
 678          */
 679         function setTopText( FormOptions $opts ) {
 680                 global $wgContLang;
 681
 682                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 683                 if ( !$message->isDisabled() ) {
 684                         $this->getOutput()->addWikiText(
 685                                 Html::rawElement( 'div',
 686                                         [
 687                                                 'class' => 'mw-recentchanges-toplinks',
 688                                                 'lang' => $wgContLang->getHtmlCode(),
 689                                                 'dir' => $wgContLang->getDir()
 690                                         ],
 691                                         "\n" . $message->plain() . "\n"
 692                                 ),
 693                                 /* $lineStart */ true,
 694                                 /* $interface */ false
 695                         );
 696                 }
 697         }
 698
 699         /**
 700          * Get options to be displayed in a form
 701          *
 702          * @param FormOptions $opts
 703          * @return array
 704          */
 705         function getExtraOptions( $opts ) {
 706                 $opts->consumeValues( [
 707                         'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
 708                 ] );
 709
 710                 $extraOpts = [];
 711                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 712
 713                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 714                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 715                 }
 716
 717                 $tagFilter = ChangeTags::buildTagFilterSelector(
 718                         $opts['tagfilter'], false, $this->getContext() );
 719                 if ( count( $tagFilter ) ) {
 720                         $extraOpts['tagfilter'] = $tagFilter;
 721                 }
 722
 723                 // Don't fire the hook for subclasses. (Or should we?)
 724                 if ( $this->getName() === 'Recentchanges' ) {
 725                         Hooks::run( 'SpecialRecentChangesPanel', [ &$extraOpts, $opts ] );
 726                 }
 727
 728                 return $extraOpts;
 729         }
 730
 731         /**
 732          * Check whether the structured filter UI is enabled
 733          *
 734          * @return bool
 735          */
 736         protected function isStructuredFilterUiEnabled() {
 737                 return $this->getUser()->getOption(
 738                         'rcenhancedfilters'
 739                 );
 740         }
 741
 742         /**
 743          * Add page-specific modules.
 744          */
 745         protected function addModules() {
 746                 parent::addModules();
 747                 $out = $this->getOutput();
 748                 $out->addModules( 'mediawiki.special.recentchanges' );
 749                 if ( $this->isStructuredFilterUiEnabled() ) {
 750                         $out->addModules( 'mediawiki.rcfilters.filters.ui' );
 751                         $out->addModuleStyles( 'mediawiki.rcfilters.filters.base.styles' );
 752                 }
 753         }
 754
 755         /**
 756          * Get last modified date, for client caching
 757          * Don't use this if we are using the patrol feature, patrol changes don't
 758          * update the timestamp
 759          *
 760          * @return string|bool
 761          */
 762         public function checkLastModified() {
 763                 $dbr = $this->getDB();
 764                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 765
 766                 return $lastmod;
 767         }
 768
 769         /**
 770          * Creates the choose namespace selection
 771          *
 772          * @param FormOptions $opts
 773          * @return string
 774          */
 775         protected function namespaceFilterForm( FormOptions $opts ) {
 776                 $nsSelect = Html::namespaceSelector(
 777                         [ 'selected' => $opts['namespace'], 'all' => '' ],
 778                         [ 'name' => 'namespace', 'id' => 'namespace' ]
 779                 );
 780                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 781                 $invert = Xml::checkLabel(
 782                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 783                         $opts['invert'],
 784                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 785                 );
 786                 $associated = Xml::checkLabel(
 787                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 788                         $opts['associated'],
 789                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 790                 );
 791
 792                 return [ $nsLabel, "$nsSelect $invert $associated" ];
 793         }
 794
 795         /**
 796          * Create an input to filter changes by categories
 797          *
 798          * @param FormOptions $opts
 799          * @return array
 800          */
 801         protected function categoryFilterForm( FormOptions $opts ) {
 802                 list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
 803                         'categories', 'mw-categories', false, $opts['categories'] );
 804
 805                 $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
 806                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 807
 808                 return [ $label, $input ];
 809         }
 810
 811         /**
 812          * Filter $rows by categories set in $opts
 813          *
 814          * @param ResultWrapper $rows Database rows
 815          * @param FormOptions $opts
 816          */
 817         function filterByCategories( &$rows, FormOptions $opts ) {
 818                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 819
 820                 if ( !count( $categories ) ) {
 821                         return;
 822                 }
 823
 824                 # Filter categories
 825                 $cats = [];
 826                 foreach ( $categories as $cat ) {
 827                         $cat = trim( $cat );
 828                         if ( $cat == '' ) {
 829                                 continue;
 830                         }
 831                         $cats[] = $cat;
 832                 }
 833
 834                 # Filter articles
 835                 $articles = [];
 836                 $a2r = [];
 837                 $rowsarr = [];
 838                 foreach ( $rows as $k => $r ) {
 839                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 840                         $id = $nt->getArticleID();
 841                         if ( $id == 0 ) {
 842                                 continue; # Page might have been deleted...
 843                         }
 844                         if ( !in_array( $id, $articles ) ) {
 845                                 $articles[] = $id;
 846                         }
 847                         if ( !isset( $a2r[$id] ) ) {
 848                                 $a2r[$id] = [];
 849                         }
 850                         $a2r[$id][] = $k;
 851                         $rowsarr[$k] = $r;
 852                 }
 853
 854                 # Shortcut?
 855                 if ( !count( $articles ) || !count( $cats ) ) {
 856                         return;
 857                 }
 858
 859                 # Look up
 860                 $catFind = new CategoryFinder;
 861                 $catFind->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 862                 $match = $catFind->run();
 863
 864                 # Filter
 865                 $newrows = [];
 866                 foreach ( $match as $id ) {
 867                         foreach ( $a2r[$id] as $rev ) {
 868                                 $k = $rev;
 869                                 $newrows[$k] = $rowsarr[$k];
 870                         }
 871                 }
 872                 $rows = new FakeResultWrapper( array_values( $newrows ) );
 873         }
 874
 875         /**
 876          * Makes change an option link which carries all the other options
 877          *
 878          * @param string $title Title
 879          * @param array $override Options to override
 880          * @param array $options Current options
 881          * @param bool $active Whether to show the link in bold
 882          * @return string
 883          */
 884         function makeOptionsLink( $title, $override, $options, $active = false ) {
 885                 $params = $this->convertParamsForLink( $override + $options );
 886
 887                 if ( $active ) {
 888                         $title = new HtmlArmor( '<strong>' . htmlspecialchars( $title ) . '</strong>' );
 889                 }
 890
 891                 return $this->getLinkRenderer()->makeKnownLink( $this->getPageTitle(), $title, [
 892                         'data-params' => json_encode( $override ),
 893                         'data-keys' => implode( ',', array_keys( $override ) ),
 894                 ], $params );
 895         }
 896
 897         /**
 898          * Creates the options panel.
 899          *
 900          * @param array $defaults
 901          * @param array $nondefaults
 902          * @param int $numRows Number of rows in the result to show after this header
 903          * @return string
 904          */
 905         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 906                 $options = $nondefaults + $defaults;
 907
 908                 $note = '';
 909                 $msg = $this->msg( 'rclegend' );
 910                 if ( !$msg->isDisabled() ) {
 911                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 912                 }
 913
 914                 $lang = $this->getLanguage();
 915                 $user = $this->getUser();
 916                 $config = $this->getConfig();
 917                 if ( $options['from'] ) {
 918                         $resetLink = $this->makeOptionsLink( $this->msg( 'rclistfromreset' ),
 919                                 [ 'from' => '' ], $nondefaults );
 920
 921                         $note .= $this->msg( 'rcnotefrom' )
 922                                 ->numParams( $options['limit'] )
 923                                 ->params(
 924                                         $lang->userTimeAndDate( $options['from'], $user ),
 925                                         $lang->userDate( $options['from'], $user ),
 926                                         $lang->userTime( $options['from'], $user )
 927                                 )
 928                                 ->numParams( $numRows )
 929                                 ->parse() . ' ' .
 930                                 Html::rawElement(
 931                                         'span',
 932                                         [ 'class' => 'rcoptions-listfromreset' ],
 933                                         $this->msg( 'parentheses' )->rawParams( $resetLink )->parse()
 934                                 ) .
 935                                 '<br />';
 936                 }
 937
 938                 # Sort data for display and make sure it's unique after we've added user data.
 939                 $linkLimits = $config->get( 'RCLinkLimits' );
 940                 $linkLimits[] = $options['limit'];
 941                 sort( $linkLimits );
 942                 $linkLimits = array_unique( $linkLimits );
 943
 944                 $linkDays = $config->get( 'RCLinkDays' );
 945                 $linkDays[] = $options['days'];
 946                 sort( $linkDays );
 947                 $linkDays = array_unique( $linkDays );
 948
 949                 // limit links
 950                 $cl = [];
 951                 foreach ( $linkLimits as $value ) {
 952                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 953                                 [ 'limit' => $value ], $nondefaults, $value == $options['limit'] );
 954                 }
 955                 $cl = $lang->pipeList( $cl );
 956
 957                 // day links, reset 'from' to none
 958                 $dl = [];
 959                 foreach ( $linkDays as $value ) {
 960                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 961                                 [ 'days' => $value, 'from' => '' ], $nondefaults, $value == $options['days'] );
 962                 }
 963                 $dl = $lang->pipeList( $dl );
 964
 965                 $showhide = [ 'show', 'hide' ];
 966
 967                 $links = [];
 968
 969                 $filterGroups = $this->getFilterGroups();
 970
 971                 $context = $this->getContext();
 972                 foreach ( $filterGroups as $groupName => $group ) {
 973                         if ( !$group->isPerGroupRequestParameter() ) {
 974                                 foreach ( $group->getFilters() as $key => $filter ) {
 975                                         if ( $filter->displaysOnUnstructuredUi( $this ) ) {
 976                                                 $msg = $filter->getShowHide();
 977                                                 $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 978                                                 // Extensions can define additional filters, but don't need to define the corresponding
 979                                                 // messages. If they don't exist, just fall back to 'show' and 'hide'.
 980                                                 if ( !$linkMessage->exists() ) {
 981                                                         $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 982                                                 }
 983
 984                                                 $link = $this->makeOptionsLink( $linkMessage->text(),
 985                                                         [ $key => 1 - $options[$key] ], $nondefaults );
 986
 987                                                 $attribs = [
 988                                                         'class' => "$msg rcshowhideoption",
 989                                                         'data-filter-name' => $filter->getName(),
 990                                                 ];
 991
 992                                                 if ( $filter->isFeatureAvailableOnStructuredUi( $this ) ) {
 993                                                         $attribs['data-feature-in-structured-ui'] = true;
 994                                                 }
 995
 996                                                 $links[] = Html::rawElement(
 997                                                         'span',
 998                                                         $attribs,
 999                                                         $this->msg( $msg )->rawParams( $link )->escaped()
1000                                                 );
1001                                         }
1002                                 }
1003                         }
1004                 }
1005
1006                 // show from this onward link
1007                 $timestamp = wfTimestampNow();
1008                 $now = $lang->userTimeAndDate( $timestamp, $user );
1009                 $timenow = $lang->userTime( $timestamp, $user );
1010                 $datenow = $lang->userDate( $timestamp, $user );
1011                 $pipedLinks = '<span class="rcshowhide">' . $lang->pipeList( $links ) . '</span>';
1012
1013                 $rclinks = '<span class="rclinks">' . $this->msg( 'rclinks' )->rawParams( $cl, $dl, '' )
1014                         ->parse() . '</span>';
1015
1016                 $rclistfrom = '<span class="rclistfrom">' . $this->makeOptionsLink(
1017                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
1018                         [ 'from' => $timestamp ],
1019                         $nondefaults
1020                 ) . '</span>';
1021
1022                 return "{$note}$rclinks<br />$pipedLinks<br />$rclistfrom";
1023         }
1024
1025         public function isIncludable() {
1026                 return true;
1027         }
1028
1029         protected function getCacheTTL() {
1030                 return 60 * 5;
1031         }
1032 }