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 /**
  25  * A special page that lists last changes made to the wiki
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class SpecialRecentChanges extends ChangesListSpecialPage {
  30         // @codingStandardsIgnoreStart Needed "useless" override to change parameters.
  31         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  32                 parent::__construct( $name, $restriction );
  33         }
  34         // @codingStandardsIgnoreEnd
  35
  36         /**
  37          * Main execution point
  38          *
  39          * @param string $subpage
  40          */
  41         public function execute( $subpage ) {
  42                 // Backwards-compatibility: redirect to new feed URLs
  43                 $feedFormat = $this->getRequest()->getVal( 'feed' );
  44                 if ( !$this->including() && $feedFormat ) {
  45                         $query = $this->getFeedQuery();
  46                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
  47                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
  48
  49                         return;
  50                 }
  51
  52                 // 10 seconds server-side caching max
  53                 $this->getOutput()->setSquidMaxage( 10 );
  54                 // Check if the client has a cached version
  55                 $lastmod = $this->checkLastModified();
  56                 if ( $lastmod === false ) {
  57                         return;
  58                 }
  59
  60                 parent::execute( $subpage );
  61         }
  62
  63         /**
  64          * Get a FormOptions object containing the default options
  65          *
  66          * @return FormOptions
  67          */
  68         public function getDefaultOptions() {
  69                 $opts = parent::getDefaultOptions();
  70                 $user = $this->getUser();
  71
  72                 $opts->add( 'days', $user->getIntOption( 'rcdays' ) );
  73                 $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
  74                 $opts->add( 'from', '' );
  75
  76                 $opts->add( 'hideminor', $user->getBoolOption( 'hideminor' ) );
  77                 $opts->add( 'hidebots', true );
  78                 $opts->add( 'hideanons', false );
  79                 $opts->add( 'hideliu', false );
  80                 $opts->add( 'hidepatrolled', $user->getBoolOption( 'hidepatrolled' ) );
  81                 $opts->add( 'hidemyself', false );
  82
  83                 $opts->add( 'categories', '' );
  84                 $opts->add( 'categories_any', false );
  85                 $opts->add( 'tagfilter', '' );
  86
  87                 return $opts;
  88         }
  89
  90         /**
  91          * Get custom show/hide filters
  92          *
  93          * @return array Map of filter URL param names to properties (msg/default)
  94          */
  95         protected function getCustomFilters() {
  96                 if ( $this->customFilters === null ) {
  97                         $this->customFilters = parent::getCustomFilters();
  98                         wfRunHooks( 'SpecialRecentChangesFilters', array( $this, &$this->customFilters ), '1.23' );
  99                 }
 100
 101                 return $this->customFilters;
 102         }
 103
 104         /**
 105          * Process $par and put options found in $opts. Used when including the page.
 106          *
 107          * @param string $par
 108          * @param FormOptions $opts
 109          */
 110         public function parseParameters( $par, FormOptions $opts ) {
 111                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 112                 foreach ( $bits as $bit ) {
 113                         if ( 'hidebots' === $bit ) {
 114                                 $opts['hidebots'] = true;
 115                         }
 116                         if ( 'bots' === $bit ) {
 117                                 $opts['hidebots'] = false;
 118                         }
 119                         if ( 'hideminor' === $bit ) {
 120                                 $opts['hideminor'] = true;
 121                         }
 122                         if ( 'minor' === $bit ) {
 123                                 $opts['hideminor'] = false;
 124                         }
 125                         if ( 'hideliu' === $bit ) {
 126                                 $opts['hideliu'] = true;
 127                         }
 128                         if ( 'hidepatrolled' === $bit ) {
 129                                 $opts['hidepatrolled'] = true;
 130                         }
 131                         if ( 'hideanons' === $bit ) {
 132                                 $opts['hideanons'] = true;
 133                         }
 134                         if ( 'hidemyself' === $bit ) {
 135                                 $opts['hidemyself'] = true;
 136                         }
 137
 138                         if ( is_numeric( $bit ) ) {
 139                                 $opts['limit'] = $bit;
 140                         }
 141
 142                         $m = array();
 143                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 144                                 $opts['limit'] = $m[1];
 145                         }
 146                         if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 147                                 $opts['days'] = $m[1];
 148                         }
 149                         if ( preg_match( '/^namespace=(\d+)$/', $bit, $m ) ) {
 150                                 $opts['namespace'] = $m[1];
 151                         }
 152                 }
 153         }
 154
 155         public function validateOptions( FormOptions $opts ) {
 156                 $opts->validateIntBounds( 'limit', 0, 5000 );
 157                 parent::validateOptions( $opts );
 158         }
 159
 160         /**
 161          * Return an array of conditions depending of options set in $opts
 162          *
 163          * @param FormOptions $opts
 164          * @return array
 165          */
 166         public function buildMainQueryConds( FormOptions $opts ) {
 167                 $dbr = $this->getDB();
 168                 $conds = parent::buildMainQueryConds( $opts );
 169
 170                 // Calculate cutoff
 171                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 172                 $cutoff_unixtime = $cutoff_unixtime - ( $cutoff_unixtime % 86400 );
 173                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 174
 175                 $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
 176                 if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
 177                         $cutoff = $dbr->timestamp( $opts['from'] );
 178                 } else {
 179                         $opts->reset( 'from' );
 180                 }
 181
 182                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 183
 184                 return $conds;
 185         }
 186
 187         /**
 188          * Process the query
 189          *
 190          * @param array $conds
 191          * @param FormOptions $opts
 192          * @return bool|ResultWrapper Result or false (for Recentchangeslinked only)
 193          */
 194         public function doMainQuery( $conds, $opts ) {
 195                 $dbr = $this->getDB();
 196                 $user = $this->getUser();
 197
 198                 $tables = array( 'recentchanges' );
 199                 $fields = RecentChange::selectFields();
 200                 $query_options = array();
 201                 $join_conds = array();
 202
 203                 // JOIN on watchlist for users
 204                 if ( $user->getId() && $user->isAllowed( 'viewmywatchlist' ) ) {
 205                         $tables[] = 'watchlist';
 206                         $fields[] = 'wl_user';
 207                         $fields[] = 'wl_notificationtimestamp';
 208                         $join_conds['watchlist'] = array( 'LEFT JOIN', array(
 209                                 'wl_user' => $user->getId(),
 210                                 'wl_title=rc_title',
 211                                 'wl_namespace=rc_namespace'
 212                         ) );
 213                 }
 214
 215                 if ( $user->isAllowed( 'rollback' ) ) {
 216                         $tables[] = 'page';
 217                         $fields[] = 'page_latest';
 218                         $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
 219                 }
 220
 221                 ChangeTags::modifyDisplayQuery(
 222                         $tables,
 223                         $fields,
 224                         $conds,
 225                         $join_conds,
 226                         $query_options,
 227                         $opts['tagfilter']
 228                 );
 229
 230                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 231                         $opts )
 232                 ) {
 233                         return false;
 234                 }
 235
 236                 // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 237                 // knowledge to use an index merge if it wants (it may use some other index though).
 238                 $rows = $dbr->select(
 239                         $tables,
 240                         $fields,
 241                         $conds + array( 'rc_new' => array( 0, 1 ) ),
 242                         __METHOD__,
 243                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $opts['limit'] ) + $query_options,
 244                         $join_conds
 245                 );
 246
 247                 // Build the final data
 248                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 249                         $this->filterByCategories( $rows, $opts );
 250                 }
 251
 252                 return $rows;
 253         }
 254
 255         protected function runMainQueryHook( &$tables, &$fields, &$conds, &$query_options, &$join_conds, $opts ) {
 256                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 257                         && wfRunHooks(
 258                                 'SpecialRecentChangesQuery',
 259                                 array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ),
 260                                 '1.23'
 261                         );
 262         }
 263
 264         public function outputFeedLinks() {
 265                 $this->addFeedLinks( $this->getFeedQuery() );
 266         }
 267
 268         /**
 269          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 270          *
 271          * @return array
 272          */
 273         private function getFeedQuery() {
 274                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 275                         // API handles empty parameters in a different way
 276                         return $value !== '';
 277                 } );
 278                 $query['action'] = 'feedrecentchanges';
 279                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
 280                 if ( $query['limit'] > $feedLimit ) {
 281                         $query['limit'] = $feedLimit;
 282                 }
 283
 284                 return $query;
 285         }
 286
 287         /**
 288          * Build and output the actual changes list.
 289          *
 290          * @param array $rows Database rows
 291          * @param FormOptions $opts
 292          */
 293         public function outputChangesList( $rows, $opts ) {
 294                 $limit = $opts['limit'];
 295
 296                 $showWatcherCount = $this->getConfig()->get( 'RCShowWatchingUsers' )
 297                         && $this->getUser()->getOption( 'shownumberswatching' );
 298                 $watcherCache = array();
 299
 300                 $dbr = $this->getDB();
 301
 302                 $counter = 1;
 303                 $list = ChangesList::newFromContext( $this->getContext() );
 304                 $list->initChangesListRows( $rows );
 305
 306                 $rclistOutput = $list->beginRecentChangesList();
 307                 foreach ( $rows as $obj ) {
 308                         if ( $limit == 0 ) {
 309                                 break;
 310                         }
 311                         $rc = RecentChange::newFromRow( $obj );
 312                         $rc->counter = $counter++;
 313                         # Check if the page has been updated since the last visit
 314                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) && !empty( $obj->wl_notificationtimestamp ) ) {
 315                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 316                         } else {
 317                                 $rc->notificationtimestamp = false; // Default
 318                         }
 319                         # Check the number of users watching the page
 320                         $rc->numberofWatchingusers = 0; // Default
 321                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 322                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 323                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 324                                                 $dbr->selectField(
 325                                                         'watchlist',
 326                                                         'COUNT(*)',
 327                                                         array(
 328                                                                 'wl_namespace' => $obj->rc_namespace,
 329                                                                 'wl_title' => $obj->rc_title,
 330                                                         ),
 331                                                         __METHOD__ . '-watchers'
 332                                                 );
 333                                 }
 334                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 335                         }
 336
 337                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 338                         if ( $changeLine !== false ) {
 339                                 $rclistOutput .= $changeLine;
 340                                 --$limit;
 341                         }
 342                 }
 343                 $rclistOutput .= $list->endRecentChangesList();
 344
 345                 if ( $rows->numRows() === 0 ) {
 346                         $this->getOutput()->addHtml(
 347                                 '<div class="mw-changeslist-empty">' .
 348                                 $this->msg( 'recentchanges-noresult' )->parse() .
 349                                 '</div>'
 350                         );
 351                         if ( !$this->including() ) {
 352                                 $this->getOutput()->setStatusCode( 404 );
 353                         }
 354                 } else {
 355                         $this->getOutput()->addHTML( $rclistOutput );
 356                 }
 357         }
 358
 359         /**
 360          * Set the text to be displayed above the changes
 361          *
 362          * @param FormOptions $opts
 363          * @param int $numRows Number of rows in the result to show after this header
 364          */
 365         public function doHeader( $opts, $numRows ) {
 366                 $this->setTopText( $opts );
 367
 368                 $defaults = $opts->getAllValues();
 369                 $nondefaults = $opts->getChangedValues();
 370
 371                 $panel = array();
 372                 $panel[] = self::makeLegend( $this->getContext() );
 373                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 374                 $panel[] = '<hr />';
 375
 376                 $extraOpts = $this->getExtraOptions( $opts );
 377                 $extraOptsCount = count( $extraOpts );
 378                 $count = 0;
 379                 $submit = ' ' . Xml::submitbutton( $this->msg( 'allpagessubmit' )->text() );
 380
 381                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 382                 foreach ( $extraOpts as $name => $optionRow ) {
 383                         # Add submit button to the last row only
 384                         ++$count;
 385                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 386
 387                         $out .= Xml::openElement( 'tr' );
 388                         if ( is_array( $optionRow ) ) {
 389                                 $out .= Xml::tags(
 390                                         'td',
 391                                         array( 'class' => 'mw-label mw-' . $name . '-label' ),
 392                                         $optionRow[0]
 393                                 );
 394                                 $out .= Xml::tags(
 395                                         'td',
 396                                         array( 'class' => 'mw-input' ),
 397                                         $optionRow[1] . $addSubmit
 398                                 );
 399                         } else {
 400                                 $out .= Xml::tags(
 401                                         'td',
 402                                         array( 'class' => 'mw-input', 'colspan' => 2 ),
 403                                         $optionRow . $addSubmit
 404                                 );
 405                         }
 406                         $out .= Xml::closeElement( 'tr' );
 407                 }
 408                 $out .= Xml::closeElement( 'table' );
 409
 410                 $unconsumed = $opts->getUnconsumedValues();
 411                 foreach ( $unconsumed as $key => $value ) {
 412                         $out .= Html::hidden( $key, $value );
 413                 }
 414
 415                 $t = $this->getPageTitle();
 416                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 417                 $form = Xml::tags( 'form', array( 'action' => wfScript() ), $out );
 418                 $panel[] = $form;
 419                 $panelString = implode( "\n", $panel );
 420
 421                 $this->getOutput()->addHTML(
 422                         Xml::fieldset(
 423                                 $this->msg( 'recentchanges-legend' )->text(),
 424                                 $panelString,
 425                                 array( 'class' => 'rcoptions' )
 426                         )
 427                 );
 428
 429                 $this->setBottomText( $opts );
 430         }
 431
 432         /**
 433          * Send the text to be displayed above the options
 434          *
 435          * @param FormOptions $opts Unused
 436          */
 437         function setTopText( FormOptions $opts ) {
 438                 global $wgContLang;
 439
 440                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 441                 if ( !$message->isDisabled() ) {
 442                         $this->getOutput()->addWikiText(
 443                                 Html::rawElement( 'div',
 444                                         array( 'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ),
 445                                         "\n" . $message->plain() . "\n"
 446                                 ),
 447                                 /* $lineStart */ true,
 448                                 /* $interface */ false
 449                         );
 450                 }
 451         }
 452
 453         /**
 454          * Get options to be displayed in a form
 455          *
 456          * @param FormOptions $opts
 457          * @return array
 458          */
 459         function getExtraOptions( $opts ) {
 460                 $opts->consumeValues( array(
 461                         'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
 462                 ) );
 463
 464                 $extraOpts = array();
 465                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 466
 467                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 468                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 469                 }
 470
 471                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 472                 if ( count( $tagFilter ) ) {
 473                         $extraOpts['tagfilter'] = $tagFilter;
 474                 }
 475
 476                 // Don't fire the hook for subclasses. (Or should we?)
 477                 if ( $this->getName() === 'Recentchanges' ) {
 478                         wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 479                 }
 480
 481                 return $extraOpts;
 482         }
 483
 484         /**
 485          * Add page-specific modules.
 486          */
 487         protected function addModules() {
 488                 parent::addModules();
 489                 $out = $this->getOutput();
 490                 $out->addModules( 'mediawiki.special.recentchanges' );
 491         }
 492
 493         /**
 494          * Get last modified date, for client caching
 495          * Don't use this if we are using the patrol feature, patrol changes don't
 496          * update the timestamp
 497          *
 498          * @return string|bool
 499          */
 500         public function checkLastModified() {
 501                 $dbr = $this->getDB();
 502                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 503
 504                 return $lastmod;
 505         }
 506
 507         /**
 508          * Creates the choose namespace selection
 509          *
 510          * @param FormOptions $opts
 511          * @return string
 512          */
 513         protected function namespaceFilterForm( FormOptions $opts ) {
 514                 $nsSelect = Html::namespaceSelector(
 515                         array( 'selected' => $opts['namespace'], 'all' => '' ),
 516                         array( 'name' => 'namespace', 'id' => 'namespace' )
 517                 );
 518                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 519                 $invert = Xml::checkLabel(
 520                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 521                         $opts['invert'],
 522                         array( 'title' => $this->msg( 'tooltip-invert' )->text() )
 523                 );
 524                 $associated = Xml::checkLabel(
 525                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 526                         $opts['associated'],
 527                         array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
 528                 );
 529
 530                 return array( $nsLabel, "$nsSelect $invert $associated" );
 531         }
 532
 533         /**
 534          * Create an input to filter changes by categories
 535          *
 536          * @param FormOptions $opts
 537          * @return array
 538          */
 539         protected function categoryFilterForm( FormOptions $opts ) {
 540                 list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
 541                         'categories', 'mw-categories', false, $opts['categories'] );
 542
 543                 $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
 544                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 545
 546                 return array( $label, $input );
 547         }
 548
 549         /**
 550          * Filter $rows by categories set in $opts
 551          *
 552          * @param ResultWrapper $rows Database rows
 553          * @param FormOptions $opts
 554          */
 555         function filterByCategories( &$rows, FormOptions $opts ) {
 556                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 557
 558                 if ( !count( $categories ) ) {
 559                         return;
 560                 }
 561
 562                 # Filter categories
 563                 $cats = array();
 564                 foreach ( $categories as $cat ) {
 565                         $cat = trim( $cat );
 566                         if ( $cat == '' ) {
 567                                 continue;
 568                         }
 569                         $cats[] = $cat;
 570                 }
 571
 572                 # Filter articles
 573                 $articles = array();
 574                 $a2r = array();
 575                 $rowsarr = array();
 576                 foreach ( $rows as $k => $r ) {
 577                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 578                         $id = $nt->getArticleID();
 579                         if ( $id == 0 ) {
 580                                 continue; # Page might have been deleted...
 581                         }
 582                         if ( !in_array( $id, $articles ) ) {
 583                                 $articles[] = $id;
 584                         }
 585                         if ( !isset( $a2r[$id] ) ) {
 586                                 $a2r[$id] = array();
 587                         }
 588                         $a2r[$id][] = $k;
 589                         $rowsarr[$k] = $r;
 590                 }
 591
 592                 # Shortcut?
 593                 if ( !count( $articles ) || !count( $cats ) ) {
 594                         return;
 595                 }
 596
 597                 # Look up
 598                 $catFind = new CategoryFinder;
 599                 $catFind->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 600                 $match = $catFind->run();
 601
 602                 # Filter
 603                 $newrows = array();
 604                 foreach ( $match as $id ) {
 605                         foreach ( $a2r[$id] as $rev ) {
 606                                 $k = $rev;
 607                                 $newrows[$k] = $rowsarr[$k];
 608                         }
 609                 }
 610                 $rows = $newrows;
 611         }
 612
 613         /**
 614          * Makes change an option link which carries all the other options
 615          *
 616          * @param string $title Title
 617          * @param array $override Options to override
 618          * @param array $options Current options
 619          * @param bool $active Whether to show the link in bold
 620          * @return string
 621          */
 622         function makeOptionsLink( $title, $override, $options, $active = false ) {
 623                 $params = $override + $options;
 624
 625                 // Bug 36524: false values have be converted to "0" otherwise
 626                 // wfArrayToCgi() will omit it them.
 627                 foreach ( $params as &$value ) {
 628                         if ( $value === false ) {
 629                                 $value = '0';
 630                         }
 631                 }
 632                 unset( $value );
 633
 634                 $text = htmlspecialchars( $title );
 635                 if ( $active ) {
 636                         $text = '<strong>' . $text . '</strong>';
 637                 }
 638
 639                 return Linker::linkKnown( $this->getPageTitle(), $text, array(), $params );
 640         }
 641
 642         /**
 643          * Creates the options panel.
 644          *
 645          * @param array $defaults
 646          * @param array $nondefaults
 647          * @param int $numRows Number of rows in the result to show after this header
 648          * @return string
 649          */
 650         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 651                 $options = $nondefaults + $defaults;
 652
 653                 $note = '';
 654                 $msg = $this->msg( 'rclegend' );
 655                 if ( !$msg->isDisabled() ) {
 656                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 657                 }
 658
 659                 $lang = $this->getLanguage();
 660                 $user = $this->getUser();
 661                 if ( $options['from'] ) {
 662                         $note .= $this->msg( 'rcnotefrom' )
 663                                 ->numParams( $options['limit'] )
 664                                 ->params(
 665                                         $lang->userTimeAndDate( $options['from'], $user ),
 666                                         $lang->userDate( $options['from'], $user ),
 667                                         $lang->userTime( $options['from'], $user )
 668                                 )
 669                                 ->numParams( $numRows )
 670                                 ->parse() . '<br />';
 671                 }
 672
 673                 # Sort data for display and make sure it's unique after we've added user data.
 674                 $linkLimits = $this->getConfig()->get( 'RCLinkLimits' );
 675                 $linkLimits[] = $options['limit'];
 676                 sort( $linkLimits );
 677                 $linkLimits = array_unique( $linkLimits );
 678
 679                 $linkDays = $this->getConfig()->get( 'RCLinkDays' );
 680                 $linkDays[] = $options['days'];
 681                 sort( $linkDays );
 682                 $linkDays = array_unique( $linkDays );
 683
 684                 // limit links
 685                 $cl = array();
 686                 foreach ( $linkLimits as $value ) {
 687                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 688                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] );
 689                 }
 690                 $cl = $lang->pipeList( $cl );
 691
 692                 // day links, reset 'from' to none
 693                 $dl = array();
 694                 foreach ( $linkDays as $value ) {
 695                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 696                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] );
 697                 }
 698                 $dl = $lang->pipeList( $dl );
 699
 700                 // show/hide links
 701                 $filters = array(
 702                         'hideminor' => 'rcshowhideminor',
 703                         'hidebots' => 'rcshowhidebots',
 704                         'hideanons' => 'rcshowhideanons',
 705                         'hideliu' => 'rcshowhideliu',
 706                         'hidepatrolled' => 'rcshowhidepatr',
 707                         'hidemyself' => 'rcshowhidemine'
 708                 );
 709
 710                 $showhide = array( 'show', 'hide' );
 711
 712                 foreach ( $this->getCustomFilters() as $key => $params ) {
 713                         $filters[$key] = $params['msg'];
 714                 }
 715                 // Disable some if needed
 716                 if ( !$user->useRCPatrol() ) {
 717                         unset( $filters['hidepatrolled'] );
 718                 }
 719
 720                 $links = array();
 721                 foreach ( $filters as $key => $msg ) {
 722                         // The following messages are used here:
 723                         // rcshowhideminor-show, rcshowhideminor-hide, rcshowhidebots-show, rcshowhidebots-hide,
 724                         // rcshowhideanons-show, rcshowhideanons-hide, rcshowhideliu-show, rcshowhideliu-hide,
 725                         // rcshowhidepatr-show, rcshowhidepatr-hide, rcshowhidemine-show, rcshowhidemine-hide.
 726                         $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 727                         // Extensions can define additional filters, but don't need to define the corresponding
 728                         // messages. If they don't exist, just fall back to 'show' and 'hide'.
 729                         if ( !$linkMessage->exists() ) {
 730                                 $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 731                         }
 732
 733                         $link = $this->makeOptionsLink( $linkMessage->text(),
 734                                 array( $key => 1 - $options[$key] ), $nondefaults );
 735                         $links[] = "<span class=\"$msg rcshowhideoption\">" . $this->msg( $msg )->rawParams( $link )->escaped() . '</span>';
 736                 }
 737
 738                 // show from this onward link
 739                 $timestamp = wfTimestampNow();
 740                 $now = $lang->userTimeAndDate( $timestamp, $user );
 741                 $timenow = $lang->userTime( $timestamp, $user );
 742                 $datenow = $lang->userDate( $timestamp, $user );
 743                 $pipedLinks = '<span class="rcshowhide">' . $lang->pipeList( $links ) . '</span>';
 744
 745                 $rclinks = '<span class="rclinks">' . $this->msg( 'rclinks' )->rawParams( $cl, $dl, $pipedLinks )
 746                         ->parse() . '</span>';
 747
 748                 $rclistfrom = '<span class="rclistfrom">' . $this->makeOptionsLink(
 749                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
 750                         array( 'from' => $timestamp ),
 751                         $nondefaults
 752                 ) . '</span>';
 753
 754                 return "{$note}$rclinks<br />$rclistfrom";
 755         }
 756
 757         public function isIncludable() {
 758                 return true;
 759         }
 760 }