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