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                 // Backwards-compatibility: redirect to new feed URLs
 142                 $feedFormat = $this->getRequest()->getVal( 'feed' );
 143                 if ( !$this->including() && $feedFormat ) {
 144                         $query = $this->getFeedQuery();
 145                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
 146                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
 147
 148                         return;
 149                 }
 150
 151                 // 10 seconds server-side caching max
 152                 $out = $this->getOutput();
 153                 $out->setCdnMaxage( 10 );
 154                 // Check if the client has a cached version
 155                 $lastmod = $this->checkLastModified();
 156                 if ( $lastmod === false ) {
 157                         return;
 158                 }
 159
 160                 $this->addHelpLink(
 161                         '//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Recent_changes',
 162                         true
 163                 );
 164                 parent::execute( $subpage );
 165
 166                 if ( $this->isStructuredFilterUiEnabled() ) {
 167                         $out->addJsConfigVars( 'wgStructuredChangeFiltersLiveUpdateSupported', true );
 168                         $out->addJsConfigVars(
 169                                 'wgStructuredChangeFiltersSavedQueriesPreferenceName',
 170                                 'rcfilters-saved-queries'
 171                         );
 172                 }
 173         }
 174
 175         /**
 176          * @inheritDoc
 177          */
 178         protected function transformFilterDefinition( array $filterDefinition ) {
 179                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 180                         $filterDefinition['showHide'] = 'rc' . $filterDefinition['showHideSuffix'];
 181                 }
 182
 183                 return $filterDefinition;
 184         }
 185
 186         /**
 187          * @inheritDoc
 188          */
 189         protected function registerFilters() {
 190                 parent::registerFilters();
 191
 192                 if (
 193                         !$this->including() &&
 194                         $this->getUser()->isLoggedIn() &&
 195                         $this->getUser()->isAllowed( 'viewmywatchlist' )
 196                 ) {
 197                         $this->registerFiltersFromDefinitions( [ $this->watchlistFilterGroupDefinition ] );
 198                         $watchlistGroup = $this->getFilterGroup( 'watchlist' );
 199                         $watchlistGroup->getFilter( 'watched' )->setAsSupersetOf(
 200                                 $watchlistGroup->getFilter( 'watchednew' )
 201                         );
 202                 }
 203
 204                 $user = $this->getUser();
 205
 206                 $significance = $this->getFilterGroup( 'significance' );
 207                 $hideMinor = $significance->getFilter( 'hideminor' );
 208                 $hideMinor->setDefault( $user->getBoolOption( 'hideminor' ) );
 209
 210                 $automated = $this->getFilterGroup( 'automated' );
 211                 $hideBots = $automated->getFilter( 'hidebots' );
 212                 $hideBots->setDefault( true );
 213
 214                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 215                 if ( $reviewStatus !== null ) {
 216                         // Conditional on feature being available and rights
 217                         $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 218                         $hidePatrolled->setDefault( $user->getBoolOption( 'hidepatrolled' ) );
 219                 }
 220
 221                 $changeType = $this->getFilterGroup( 'changeType' );
 222                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 223                 if ( $hideCategorization !== null ) {
 224                         // Conditional on feature being available
 225                         $hideCategorization->setDefault( $user->getBoolOption( 'hidecategorization' ) );
 226                 }
 227         }
 228
 229         /**
 230          * Get a FormOptions object containing the default options
 231          *
 232          * @return FormOptions
 233          */
 234         public function getDefaultOptions() {
 235                 $opts = parent::getDefaultOptions();
 236                 $user = $this->getUser();
 237
 238                 $opts->add( 'days', $user->getIntOption( 'rcdays' ), FormOptions::FLOAT );
 239                 $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
 240                 $opts->add( 'from', '' );
 241
 242                 $opts->add( 'categories', '' );
 243                 $opts->add( 'categories_any', false );
 244                 $opts->add( 'tagfilter', '' );
 245
 246                 return $opts;
 247         }
 248
 249         /**
 250          * Get all custom filters
 251          *
 252          * @return array Map of filter URL param names to properties (msg/default)
 253          */
 254         protected function getCustomFilters() {
 255                 if ( $this->customFilters === null ) {
 256                         $this->customFilters = parent::getCustomFilters();
 257                         Hooks::run( 'SpecialRecentChangesFilters', [ $this, &$this->customFilters ], '1.23' );
 258                 }
 259
 260                 return $this->customFilters;
 261         }
 262
 263         /**
 264          * Process $par and put options found in $opts. Used when including the page.
 265          *
 266          * @param string $par
 267          * @param FormOptions $opts
 268          */
 269         public function parseParameters( $par, FormOptions $opts ) {
 270                 parent::parseParameters( $par, $opts );
 271
 272                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 273                 foreach ( $bits as $bit ) {
 274                         if ( is_numeric( $bit ) ) {
 275                                 $opts['limit'] = $bit;
 276                         }
 277
 278                         $m = [];
 279                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 280                                 $opts['limit'] = $m[1];
 281                         }
 282                         if ( preg_match( '/^days=(\d+(?:\.\d+)?)$/', $bit, $m ) ) {
 283                                 $opts['days'] = $m[1];
 284                         }
 285                         if ( preg_match( '/^namespace=(.*)$/', $bit, $m ) ) {
 286                                 $opts['namespace'] = $m[1];
 287                         }
 288                         if ( preg_match( '/^tagfilter=(.*)$/', $bit, $m ) ) {
 289                                 $opts['tagfilter'] = $m[1];
 290                         }
 291                 }
 292         }
 293
 294         public function validateOptions( FormOptions $opts ) {
 295                 $opts->validateIntBounds( 'limit', 0, 5000 );
 296                 $opts->validateBounds( 'days', 0, $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 ) );
 297                 parent::validateOptions( $opts );
 298         }
 299
 300         /**
 301          * @inheritDoc
 302          */
 303         protected function buildQuery( &$tables, &$fields, &$conds,
 304                 &$query_options, &$join_conds, FormOptions $opts
 305         ) {
 306                 $dbr = $this->getDB();
 307                 parent::buildQuery( $tables, $fields, $conds,
 308                         $query_options, $join_conds, $opts );
 309
 310                 // Calculate cutoff
 311                 $cutoff_unixtime = time() - $opts['days'] * 3600 * 24;
 312                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 313
 314                 $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
 315                 if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
 316                         $cutoff = $dbr->timestamp( $opts['from'] );
 317                 } else {
 318                         $opts->reset( 'from' );
 319                 }
 320
 321                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 322         }
 323
 324         /**
 325          * @inheritDoc
 326          */
 327         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 328                 $join_conds, FormOptions $opts
 329         ) {
 330                 $dbr = $this->getDB();
 331                 $user = $this->getUser();
 332
 333                 $tables[] = 'recentchanges';
 334                 $fields = array_merge( RecentChange::selectFields(), $fields );
 335
 336                 // JOIN on watchlist for users
 337                 if ( $user->isLoggedIn() && $user->isAllowed( 'viewmywatchlist' ) ) {
 338                         $tables[] = 'watchlist';
 339                         $fields[] = 'wl_user';
 340                         $fields[] = 'wl_notificationtimestamp';
 341                         $join_conds['watchlist'] = [ 'LEFT JOIN', [
 342                                 'wl_user' => $user->getId(),
 343                                 'wl_title=rc_title',
 344                                 'wl_namespace=rc_namespace'
 345                         ] ];
 346                 }
 347
 348                 // JOIN on page, used for 'last revision' filter highlight
 349                 $tables[] = 'page';
 350                 $fields[] = 'page_latest';
 351                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 352
 353                 $tagFilter = $opts['tagfilter'] ? explode( '|', $opts['tagfilter'] ) : [];
 354                 ChangeTags::modifyDisplayQuery(
 355                         $tables,
 356                         $fields,
 357                         $conds,
 358                         $join_conds,
 359                         $query_options,
 360                         $tagFilter
 361                 );
 362
 363                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 364                         $opts )
 365                 ) {
 366                         return false;
 367                 }
 368
 369                 if ( $this->areFiltersInConflict() ) {
 370                         return false;
 371                 }
 372
 373                 $orderByAndLimit = [
 374                         'ORDER BY' => 'rc_timestamp DESC',
 375                         'LIMIT' => $opts['limit']
 376                 ];
 377                 if ( in_array( 'DISTINCT', $query_options ) ) {
 378                         // ChangeTags::modifyDisplayQuery() adds DISTINCT when filtering on multiple tags.
 379                         // In order to prevent DISTINCT from causing query performance problems,
 380                         // we have to GROUP BY the primary key. This in turn requires us to add
 381                         // the primary key to the end of the ORDER BY, and the old ORDER BY to the
 382                         // start of the GROUP BY
 383                         $orderByAndLimit['ORDER BY'] = 'rc_timestamp DESC, rc_id DESC';
 384                         $orderByAndLimit['GROUP BY'] = 'rc_timestamp, rc_id';
 385                 }
 386                 // array_merge() is used intentionally here so that hooks can, should
 387                 // they so desire, override the ORDER BY / LIMIT condition(s); prior to
 388                 // MediaWiki 1.26 this used to use the plus operator instead, which meant
 389                 // that extensions weren't able to change these conditions
 390                 $query_options = array_merge( $orderByAndLimit, $query_options );
 391                 $rows = $dbr->select(
 392                         $tables,
 393                         $fields,
 394                         // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 395                         // knowledge to use an index merge if it wants (it may use some other index though).
 396                         $conds + [ 'rc_new' => [ 0, 1 ] ],
 397                         __METHOD__,
 398                         $query_options,
 399                         $join_conds
 400                 );
 401
 402                 // Build the final data
 403                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 404                         $this->filterByCategories( $rows, $opts );
 405                 }
 406
 407                 return $rows;
 408         }
 409
 410         protected function runMainQueryHook( &$tables, &$fields, &$conds,
 411                 &$query_options, &$join_conds, $opts
 412         ) {
 413                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 414                         && Hooks::run(
 415                                 'SpecialRecentChangesQuery',
 416                                 [ &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ],
 417                                 '1.23'
 418                         );
 419         }
 420
 421         protected function getDB() {
 422                 return wfGetDB( DB_REPLICA, 'recentchanges' );
 423         }
 424
 425         public function outputFeedLinks() {
 426                 $this->addFeedLinks( $this->getFeedQuery() );
 427         }
 428
 429         /**
 430          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 431          *
 432          * @return array
 433          */
 434         protected function getFeedQuery() {
 435                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 436                         // API handles empty parameters in a different way
 437                         return $value !== '';
 438                 } );
 439                 $query['action'] = 'feedrecentchanges';
 440                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
 441                 if ( $query['limit'] > $feedLimit ) {
 442                         $query['limit'] = $feedLimit;
 443                 }
 444
 445                 return $query;
 446         }
 447
 448         /**
 449          * Build and output the actual changes list.
 450          *
 451          * @param ResultWrapper $rows Database rows
 452          * @param FormOptions $opts
 453          */
 454         public function outputChangesList( $rows, $opts ) {
 455                 $limit = $opts['limit'];
 456
 457                 $showWatcherCount = $this->getConfig()->get( 'RCShowWatchingUsers' )
 458                         && $this->getUser()->getOption( 'shownumberswatching' );
 459                 $watcherCache = [];
 460
 461                 $counter = 1;
 462                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 463                 $list->initChangesListRows( $rows );
 464
 465                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 466                 $rclistOutput = $list->beginRecentChangesList();
 467                 if ( $this->isStructuredFilterUiEnabled() ) {
 468                         $rclistOutput .= $this->makeLegend();
 469                 }
 470
 471                 foreach ( $rows as $obj ) {
 472                         if ( $limit == 0 ) {
 473                                 break;
 474                         }
 475                         $rc = RecentChange::newFromRow( $obj );
 476
 477                         # Skip CatWatch entries for hidden cats based on user preference
 478                         if (
 479                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 480                                 !$userShowHiddenCats &&
 481                                 $rc->getParam( 'hidden-cat' )
 482                         ) {
 483                                 continue;
 484                         }
 485
 486                         $rc->counter = $counter++;
 487                         # Check if the page has been updated since the last visit
 488                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' )
 489                                 && !empty( $obj->wl_notificationtimestamp )
 490                         ) {
 491                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 492                         } else {
 493                                 $rc->notificationtimestamp = false; // Default
 494                         }
 495                         # Check the number of users watching the page
 496                         $rc->numberofWatchingusers = 0; // Default
 497                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 498                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 499                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 500                                                 MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchers(
 501                                                         new TitleValue( (int)$obj->rc_namespace, $obj->rc_title )
 502                                                 );
 503                                 }
 504                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 505                         }
 506
 507                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 508                         if ( $changeLine !== false ) {
 509                                 $rclistOutput .= $changeLine;
 510                                 --$limit;
 511                         }
 512                 }
 513                 $rclistOutput .= $list->endRecentChangesList();
 514
 515                 if ( $rows->numRows() === 0 ) {
 516                         $this->outputNoResults();
 517                         if ( !$this->including() ) {
 518                                 $this->getOutput()->setStatusCode( 404 );
 519                         }
 520                 } else {
 521                         $this->getOutput()->addHTML( $rclistOutput );
 522                 }
 523         }
 524
 525         /**
 526          * Set the text to be displayed above the changes
 527          *
 528          * @param FormOptions $opts
 529          * @param int $numRows Number of rows in the result to show after this header
 530          */
 531         public function doHeader( $opts, $numRows ) {
 532                 $this->setTopText( $opts );
 533
 534                 $defaults = $opts->getAllValues();
 535                 $nondefaults = $opts->getChangedValues();
 536
 537                 $panel = [];
 538                 if ( !$this->isStructuredFilterUiEnabled() ) {
 539                         $panel[] = $this->makeLegend();
 540                 }
 541                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 542                 $panel[] = '<hr />';
 543
 544                 $extraOpts = $this->getExtraOptions( $opts );
 545                 $extraOptsCount = count( $extraOpts );
 546                 $count = 0;
 547                 $submit = ' ' . Xml::submitButton( $this->msg( 'recentchanges-submit' )->text() );
 548
 549                 $out = Xml::openElement( 'table', [ 'class' => 'mw-recentchanges-table' ] );
 550                 foreach ( $extraOpts as $name => $optionRow ) {
 551                         # Add submit button to the last row only
 552                         ++$count;
 553                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 554
 555                         $out .= Xml::openElement( 'tr', [ 'class' => $name . 'Form' ] );
 556                         if ( is_array( $optionRow ) ) {
 557                                 $out .= Xml::tags(
 558                                         'td',
 559                                         [ 'class' => 'mw-label mw-' . $name . '-label' ],
 560                                         $optionRow[0]
 561                                 );
 562                                 $out .= Xml::tags(
 563                                         'td',
 564                                         [ 'class' => 'mw-input' ],
 565                                         $optionRow[1] . $addSubmit
 566                                 );
 567                         } else {
 568                                 $out .= Xml::tags(
 569                                         'td',
 570                                         [ 'class' => 'mw-input', 'colspan' => 2 ],
 571                                         $optionRow . $addSubmit
 572                                 );
 573                         }
 574                         $out .= Xml::closeElement( 'tr' );
 575                 }
 576                 $out .= Xml::closeElement( 'table' );
 577
 578                 $unconsumed = $opts->getUnconsumedValues();
 579                 foreach ( $unconsumed as $key => $value ) {
 580                         $out .= Html::hidden( $key, $value );
 581                 }
 582
 583                 $t = $this->getPageTitle();
 584                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 585                 $form = Xml::tags( 'form', [ 'action' => wfScript() ], $out );
 586                 $panel[] = $form;
 587                 $panelString = implode( "\n", $panel );
 588
 589                 $rcoptions = Xml::fieldset(
 590                         $this->msg( 'recentchanges-legend' )->text(),
 591                         $panelString,
 592                         [ 'class' => 'rcoptions cloptions' ]
 593                 );
 594
 595                 // Insert a placeholder for RCFilters
 596                 if ( $this->isStructuredFilterUiEnabled() ) {
 597                         $rcfilterContainer = Html::element(
 598                                 'div',
 599                                 [ 'class' => 'rcfilters-container' ]
 600                         );
 601
 602                         $loadingContainer = Html::rawElement(
 603                                 'div',
 604                                 [ 'class' => 'rcfilters-spinner' ],
 605                                 Html::element(
 606                                         'div',
 607                                         [ 'class' => 'rcfilters-spinner-bounce' ]
 608                                 )
 609                         );
 610
 611                         // Wrap both with rcfilters-head
 612                         $this->getOutput()->addHTML(
 613                                 Html::rawElement(
 614                                         'div',
 615                                         [ 'class' => 'rcfilters-head' ],
 616                                         $rcfilterContainer . $rcoptions
 617                                 )
 618                         );
 619
 620                         // Add spinner
 621                         $this->getOutput()->addHTML( $loadingContainer );
 622                 } else {
 623                         $this->getOutput()->addHTML( $rcoptions );
 624                 }
 625
 626                 $this->setBottomText( $opts );
 627         }
 628
 629         /**
 630          * Send the text to be displayed above the options
 631          *
 632          * @param FormOptions $opts Unused
 633          */
 634         function setTopText( FormOptions $opts ) {
 635                 global $wgContLang;
 636
 637                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 638                 if ( !$message->isDisabled() ) {
 639                         $content = $message->parse();
 640
 641                         $langAttributes = [
 642                                 'lang' => $wgContLang->getHtmlCode(),
 643                                 'dir' => $wgContLang->getDir(),
 644                         ];
 645
 646                         $topLinksAttributes = [ 'class' => 'mw-recentchanges-toplinks' ];
 647
 648                         if ( $this->isStructuredFilterUiEnabled() ) {
 649                                 $contentTitle = Html::rawElement( 'div',
 650                                         [ 'class' => 'mw-recentchanges-toplinks-title' ],
 651                                         $this->msg( 'rcfilters-other-review-tools' )->parse()
 652                                 );
 653                                 $contentWrapper = Html::rawElement( 'div',
 654                                         array_merge( [ 'class' => 'mw-collapsible-content' ], $langAttributes ),
 655                                         $content
 656                                 );
 657                                 $content = $contentTitle . $contentWrapper;
 658                         } else {
 659                                 // Language direction should be on the top div only
 660                                 // if the title is not there. If it is there, it's
 661                                 // interface direction, and the language/dir attributes
 662                                 // should be on the content itself
 663                                 $topLinksAttributes = array_merge( $topLinksAttributes, $langAttributes );
 664                         }
 665
 666                         $this->getOutput()->addHTML(
 667                                 Html::rawElement( 'div', $topLinksAttributes, $content )
 668                         );
 669                 }
 670         }
 671
 672         /**
 673          * Get options to be displayed in a form
 674          *
 675          * @param FormOptions $opts
 676          * @return array
 677          */
 678         function getExtraOptions( $opts ) {
 679                 $opts->consumeValues( [
 680                         'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
 681                 ] );
 682
 683                 $extraOpts = [];
 684                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 685
 686                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 687                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 688                 }
 689
 690                 $tagFilter = ChangeTags::buildTagFilterSelector(
 691                         $opts['tagfilter'], false, $this->getContext() );
 692                 if ( count( $tagFilter ) ) {
 693                         $extraOpts['tagfilter'] = $tagFilter;
 694                 }
 695
 696                 // Don't fire the hook for subclasses. (Or should we?)
 697                 if ( $this->getName() === 'Recentchanges' ) {
 698                         Hooks::run( 'SpecialRecentChangesPanel', [ &$extraOpts, $opts ] );
 699                 }
 700
 701                 return $extraOpts;
 702         }
 703
 704         /**
 705          * Add page-specific modules.
 706          */
 707         protected function addModules() {
 708                 parent::addModules();
 709                 $out = $this->getOutput();
 710                 $out->addModules( 'mediawiki.special.recentchanges' );
 711         }
 712
 713         /**
 714          * Get last modified date, for client caching
 715          * Don't use this if we are using the patrol feature, patrol changes don't
 716          * update the timestamp
 717          *
 718          * @return string|bool
 719          */
 720         public function checkLastModified() {
 721                 $dbr = $this->getDB();
 722                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 723
 724                 return $lastmod;
 725         }
 726
 727         /**
 728          * Creates the choose namespace selection
 729          *
 730          * @param FormOptions $opts
 731          * @return string
 732          */
 733         protected function namespaceFilterForm( FormOptions $opts ) {
 734                 $nsSelect = Html::namespaceSelector(
 735                         [ 'selected' => $opts['namespace'], 'all' => '' ],
 736                         [ 'name' => 'namespace', 'id' => 'namespace' ]
 737                 );
 738                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 739                 $invert = Xml::checkLabel(
 740                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 741                         $opts['invert'],
 742                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 743                 );
 744                 $associated = Xml::checkLabel(
 745                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 746                         $opts['associated'],
 747                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 748                 );
 749
 750                 return [ $nsLabel, "$nsSelect $invert $associated" ];
 751         }
 752
 753         /**
 754          * Create an input to filter changes by categories
 755          *
 756          * @param FormOptions $opts
 757          * @return array
 758          */
 759         protected function categoryFilterForm( FormOptions $opts ) {
 760                 list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
 761                         'categories', 'mw-categories', false, $opts['categories'] );
 762
 763                 $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
 764                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 765
 766                 return [ $label, $input ];
 767         }
 768
 769         /**
 770          * Filter $rows by categories set in $opts
 771          *
 772          * @param ResultWrapper &$rows Database rows
 773          * @param FormOptions $opts
 774          */
 775         function filterByCategories( &$rows, FormOptions $opts ) {
 776                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 777
 778                 if ( !count( $categories ) ) {
 779                         return;
 780                 }
 781
 782                 # Filter categories
 783                 $cats = [];
 784                 foreach ( $categories as $cat ) {
 785                         $cat = trim( $cat );
 786                         if ( $cat == '' ) {
 787                                 continue;
 788                         }
 789                         $cats[] = $cat;
 790                 }
 791
 792                 # Filter articles
 793                 $articles = [];
 794                 $a2r = [];
 795                 $rowsarr = [];
 796                 foreach ( $rows as $k => $r ) {
 797                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 798                         $id = $nt->getArticleID();
 799                         if ( $id == 0 ) {
 800                                 continue; # Page might have been deleted...
 801                         }
 802                         if ( !in_array( $id, $articles ) ) {
 803                                 $articles[] = $id;
 804                         }
 805                         if ( !isset( $a2r[$id] ) ) {
 806                                 $a2r[$id] = [];
 807                         }
 808                         $a2r[$id][] = $k;
 809                         $rowsarr[$k] = $r;
 810                 }
 811
 812                 # Shortcut?
 813                 if ( !count( $articles ) || !count( $cats ) ) {
 814                         return;
 815                 }
 816
 817                 # Look up
 818                 $catFind = new CategoryFinder;
 819                 $catFind->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 820                 $match = $catFind->run();
 821
 822                 # Filter
 823                 $newrows = [];
 824                 foreach ( $match as $id ) {
 825                         foreach ( $a2r[$id] as $rev ) {
 826                                 $k = $rev;
 827                                 $newrows[$k] = $rowsarr[$k];
 828                         }
 829                 }
 830                 $rows = new FakeResultWrapper( array_values( $newrows ) );
 831         }
 832
 833         /**
 834          * Makes change an option link which carries all the other options
 835          *
 836          * @param string $title Title
 837          * @param array $override Options to override
 838          * @param array $options Current options
 839          * @param bool $active Whether to show the link in bold
 840          * @return string
 841          */
 842         function makeOptionsLink( $title, $override, $options, $active = false ) {
 843                 $params = $this->convertParamsForLink( $override + $options );
 844
 845                 if ( $active ) {
 846                         $title = new HtmlArmor( '<strong>' . htmlspecialchars( $title ) . '</strong>' );
 847                 }
 848
 849                 return $this->getLinkRenderer()->makeKnownLink( $this->getPageTitle(), $title, [
 850                         'data-params' => json_encode( $override ),
 851                         'data-keys' => implode( ',', array_keys( $override ) ),
 852                 ], $params );
 853         }
 854
 855         /**
 856          * Creates the options panel.
 857          *
 858          * @param array $defaults
 859          * @param array $nondefaults
 860          * @param int $numRows Number of rows in the result to show after this header
 861          * @return string
 862          */
 863         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 864                 $options = $nondefaults + $defaults;
 865
 866                 $note = '';
 867                 $msg = $this->msg( 'rclegend' );
 868                 if ( !$msg->isDisabled() ) {
 869                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 870                 }
 871
 872                 $lang = $this->getLanguage();
 873                 $user = $this->getUser();
 874                 $config = $this->getConfig();
 875                 if ( $options['from'] ) {
 876                         $resetLink = $this->makeOptionsLink( $this->msg( 'rclistfromreset' ),
 877                                 [ 'from' => '' ], $nondefaults );
 878
 879                         $noteFromMsg = $this->msg( 'rcnotefrom' )
 880                                 ->numParams( $options['limit'] )
 881                                 ->params(
 882                                         $lang->userTimeAndDate( $options['from'], $user ),
 883                                         $lang->userDate( $options['from'], $user ),
 884                                         $lang->userTime( $options['from'], $user )
 885                                 )
 886                                 ->numParams( $numRows );
 887                         $note .= Html::rawElement(
 888                                         'span',
 889                                         [ 'class' => 'rcnotefrom' ],
 890                                         $noteFromMsg->parse()
 891                                 ) .
 892                                 ' ' .
 893                                 Html::rawElement(
 894                                         'span',
 895                                         [ 'class' => 'rcoptions-listfromreset' ],
 896                                         $this->msg( 'parentheses' )->rawParams( $resetLink )->parse()
 897                                 ) .
 898                                 '<br />';
 899                 }
 900
 901                 # Sort data for display and make sure it's unique after we've added user data.
 902                 $linkLimits = $config->get( 'RCLinkLimits' );
 903                 $linkLimits[] = $options['limit'];
 904                 sort( $linkLimits );
 905                 $linkLimits = array_unique( $linkLimits );
 906
 907                 $linkDays = $config->get( 'RCLinkDays' );
 908                 $linkDays[] = $options['days'];
 909                 sort( $linkDays );
 910                 $linkDays = array_unique( $linkDays );
 911
 912                 // limit links
 913                 $cl = [];
 914                 foreach ( $linkLimits as $value ) {
 915                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 916                                 [ 'limit' => $value ], $nondefaults, $value == $options['limit'] );
 917                 }
 918                 $cl = $lang->pipeList( $cl );
 919
 920                 // day links, reset 'from' to none
 921                 $dl = [];
 922                 foreach ( $linkDays as $value ) {
 923                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 924                                 [ 'days' => $value, 'from' => '' ], $nondefaults, $value == $options['days'] );
 925                 }
 926                 $dl = $lang->pipeList( $dl );
 927
 928                 $showhide = [ 'show', 'hide' ];
 929
 930                 $links = [];
 931
 932                 $filterGroups = $this->getFilterGroups();
 933
 934                 foreach ( $filterGroups as $groupName => $group ) {
 935                         if ( !$group->isPerGroupRequestParameter() ) {
 936                                 foreach ( $group->getFilters() as $key => $filter ) {
 937                                         if ( $filter->displaysOnUnstructuredUi( $this ) ) {
 938                                                 $msg = $filter->getShowHide();
 939                                                 $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 940                                                 // Extensions can define additional filters, but don't need to define the corresponding
 941                                                 // messages. If they don't exist, just fall back to 'show' and 'hide'.
 942                                                 if ( !$linkMessage->exists() ) {
 943                                                         $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 944                                                 }
 945
 946                                                 $link = $this->makeOptionsLink( $linkMessage->text(),
 947                                                         [ $key => 1 - $options[$key] ], $nondefaults );
 948
 949                                                 $attribs = [
 950                                                         'class' => "$msg rcshowhideoption clshowhideoption",
 951                                                         'data-filter-name' => $filter->getName(),
 952                                                 ];
 953
 954                                                 if ( $filter->isFeatureAvailableOnStructuredUi( $this ) ) {
 955                                                         $attribs['data-feature-in-structured-ui'] = true;
 956                                                 }
 957
 958                                                 $links[] = Html::rawElement(
 959                                                         'span',
 960                                                         $attribs,
 961                                                         $this->msg( $msg )->rawParams( $link )->escaped()
 962                                                 );
 963                                         }
 964                                 }
 965                         }
 966                 }
 967
 968                 // show from this onward link
 969                 $timestamp = wfTimestampNow();
 970                 $now = $lang->userTimeAndDate( $timestamp, $user );
 971                 $timenow = $lang->userTime( $timestamp, $user );
 972                 $datenow = $lang->userDate( $timestamp, $user );
 973                 $pipedLinks = '<span class="rcshowhide">' . $lang->pipeList( $links ) . '</span>';
 974
 975                 $rclinks = '<span class="rclinks">' . $this->msg( 'rclinks' )->rawParams( $cl, $dl, '' )
 976                         ->parse() . '</span>';
 977
 978                 $rclistfrom = '<span class="rclistfrom">' . $this->makeOptionsLink(
 979                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
 980                         [ 'from' => $timestamp ],
 981                         $nondefaults
 982                 ) . '</span>';
 983
 984                 return "{$note}$rclinks<br />$pipedLinks<br />$rclistfrom";
 985         }
 986
 987         public function isIncludable() {
 988                 return true;
 989         }
 990
 991         protected function getCacheTTL() {
 992                 return 60 * 5;
 993         }
 994 }