includes/specials/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  */
  19
  20 /**
  21  * Implements Special:Recentchanges
  22  * @ingroup SpecialPage
  23  */
  24 class SpecialRecentChanges extends SpecialPage {
  25         var $rcOptions, $rcSubpage;
  26
  27         public function __construct() {
  28                 parent::__construct( 'Recentchanges' );
  29                 $this->includable( true );
  30         }
  31
  32         /**
  33          * Get a FormOptions object containing the default options
  34          *
  35          * @return FormOptions
  36          */
  37         public function getDefaultOptions() {
  38                 global $wgUser;
  39                 $opts = new FormOptions();
  40
  41                 $opts->add( 'days',  (int)$wgUser->getOption( 'rcdays' ) );
  42                 $opts->add( 'limit', (int)$wgUser->getOption( 'rclimit' ) );
  43                 $opts->add( 'from', '' );
  44
  45                 $opts->add( 'hideminor',     $wgUser->getBoolOption( 'hideminor' ) );
  46                 $opts->add( 'hidebots',      true  );
  47                 $opts->add( 'hideanons',     false );
  48                 $opts->add( 'hideliu',       false );
  49                 $opts->add( 'hidepatrolled', $wgUser->getBoolOption( 'hidepatrolled' ) );
  50                 $opts->add( 'hidemyself',    false );
  51
  52                 $opts->add( 'namespace', '', FormOptions::INTNULL );
  53                 $opts->add( 'invert', false );
  54
  55                 $opts->add( 'categories', '' );
  56                 $opts->add( 'categories_any', false );
  57                 $opts->add( 'tagfilter', '' );
  58                 return $opts;
  59         }
  60
  61         /**
  62          * Create a FormOptions object with options as specified by the user
  63          *
  64          * @return FormOptions
  65          */
  66         public function setup( $parameters ) {
  67                 global $wgRequest;
  68
  69                 $opts = $this->getDefaultOptions();
  70                 $opts->fetchValuesFromRequest( $wgRequest );
  71
  72                 // Give precedence to subpage syntax
  73                 if( $parameters !== null ) {
  74                         $this->parseParameters( $parameters, $opts );
  75                 }
  76
  77                 $opts->validateIntBounds( 'limit', 0, 5000 );
  78                 return $opts;
  79         }
  80
  81         /**
  82          * Create a FormOptions object specific for feed requests and return it
  83          *
  84          * @return FormOptions
  85          */
  86         public function feedSetup() {
  87                 global $wgFeedLimit, $wgRequest;
  88                 $opts = $this->getDefaultOptions();
  89                 # Feed is cached on limit,hideminor,namespace; other params would randomly not work
  90                 $opts->fetchValuesFromRequest( $wgRequest, array( 'limit', 'hideminor', 'namespace' ) );
  91                 $opts->validateIntBounds( 'limit', 0, $wgFeedLimit );
  92                 return $opts;
  93         }
  94
  95         /**
  96          * Get the current FormOptions for this request
  97          */
  98         public function getOptions() {
  99                 if ( $this->rcOptions === null ) {
 100                         global $wgRequest;
 101                         $feedFormat = $wgRequest->getVal( 'feed' );
 102                         $this->rcOptions = $feedFormat ? $this->feedSetup() : $this->setup( $this->rcSubpage );
 103                 }
 104                 return $this->rcOptions;
 105         }
 106
 107
 108         /**
 109          * Main execution point
 110          *
 111          * @param $subpage string
 112          */
 113         public function execute( $subpage ) {
 114                 global $wgRequest, $wgOut;
 115                 $this->rcSubpage = $subpage;
 116                 $feedFormat = $wgRequest->getVal( 'feed' );
 117
 118                 # 10 seconds server-side caching max
 119                 $wgOut->setSquidMaxage( 10 );
 120                 # Check if the client has a cached version
 121                 $lastmod = $this->checkLastModified( $feedFormat );
 122                 if( $lastmod === false ) {
 123                         return;
 124                 }
 125
 126                 $opts = $this->getOptions();
 127                 $this->setHeaders();
 128                 $this->outputHeader();
 129
 130                 // Fetch results, prepare a batch link existence check query
 131                 $conds = $this->buildMainQueryConds( $opts );
 132                 $rows = $this->doMainQuery( $conds, $opts );
 133                 if( $rows === false ){
 134                         if( !$this->including() ) {
 135                                 $this->doHeader( $opts );
 136                         }
 137                         return;
 138                 }
 139
 140                 if( !$feedFormat ) {
 141                         $batch = new LinkBatch;
 142                         foreach( $rows as $row ) {
 143                                 $batch->add( NS_USER, $row->rc_user_text  );
 144                                 $batch->add( NS_USER_TALK, $row->rc_user_text  );
 145                                 $batch->add( $row->rc_namespace, $row->rc_title );
 146                         }
 147                         $batch->execute();
 148                 }
 149                 if( $feedFormat ) {
 150                         list( $changesFeed, $formatter ) = $this->getFeedObject( $feedFormat );
 151                         $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
 152                 } else {
 153                         $this->webOutput( $rows, $opts );
 154                 }
 155
 156                 $rows->free();
 157         }
 158
 159         /**
 160          * Return an array with a ChangesFeed object and ChannelFeed object
 161          *
 162          * @return array
 163          */
 164         public function getFeedObject( $feedFormat ){
 165                 $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
 166                 $formatter = $changesFeed->getFeedObject(
 167                         wfMsgForContent( 'recentchanges' ),
 168                         wfMsgForContent( 'recentchanges-feed-description' )
 169                 );
 170                 return array( $changesFeed, $formatter );
 171         }
 172
 173         /**
 174          * Process $par and put options found if $opts
 175          * Mainly used when including the page
 176          *
 177          * @param $par String
 178          * @param $opts FormOptions
 179          */
 180         public function parseParameters( $par, FormOptions $opts ) {
 181                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 182                 foreach( $bits as $bit ) {
 183                         if( 'hidebots' === $bit ) $opts['hidebots'] = true;
 184                         if( 'bots' === $bit ) $opts['hidebots'] = false;
 185                         if( 'hideminor' === $bit ) $opts['hideminor'] = true;
 186                         if( 'minor' === $bit ) $opts['hideminor'] = false;
 187                         if( 'hideliu' === $bit ) $opts['hideliu'] = true;
 188                         if( 'hidepatrolled' === $bit ) $opts['hidepatrolled'] = true;
 189                         if( 'hideanons' === $bit ) $opts['hideanons'] = true;
 190                         if( 'hidemyself' === $bit ) $opts['hidemyself'] = true;
 191
 192                         if( is_numeric( $bit ) ) $opts['limit'] =  $bit;
 193
 194                         $m = array();
 195                         if( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) $opts['limit'] = $m[1];
 196                         if( preg_match( '/^days=(\d+)$/', $bit, $m ) ) $opts['days'] = $m[1];
 197                 }
 198         }
 199
 200         /**
 201          * Get last modified date, for client caching
 202          * Don't use this if we are using the patrol feature, patrol changes don't
 203          * update the timestamp
 204          *
 205          * @param $feedFormat String
 206          * @return string or false
 207          */
 208         public function checkLastModified( $feedFormat ) {
 209                 global $wgUseRCPatrol, $wgOut;
 210                 $dbr = wfGetDB( DB_SLAVE );
 211                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 212                 if( $feedFormat || !$wgUseRCPatrol ) {
 213                         if( $lastmod && $wgOut->checkLastModified( $lastmod ) ) {
 214                                 # Client cache fresh and headers sent, nothing more to do.
 215                                 return false;
 216                         }
 217                 }
 218                 return $lastmod;
 219         }
 220
 221         /**
 222          * Return an array of conditions depending of options set in $opts
 223          *
 224          * @param $opts FormOptions
 225          * @return array
 226          */
 227         public function buildMainQueryConds( FormOptions $opts ) {
 228                 global $wgUser;
 229
 230                 $dbr = wfGetDB( DB_SLAVE );
 231                 $conds = array();
 232
 233                 # It makes no sense to hide both anons and logged-in users
 234                 # Where this occurs, force anons to be shown
 235                 $forcebot = false;
 236                 if( $opts['hideanons'] && $opts['hideliu'] ){
 237                         # Check if the user wants to show bots only
 238                         if( $opts['hidebots'] ){
 239                                 $opts['hideanons'] = false;
 240                         } else {
 241                                 $forcebot = true;
 242                                 $opts['hidebots'] = false;
 243                         }
 244                 }
 245
 246                 // Calculate cutoff
 247                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 248                 $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 249                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 250
 251                 $fromValid = preg_match('/^[0-9]{14}$/', $opts['from']);
 252                 if( $fromValid && $opts['from'] > wfTimestamp(TS_MW,$cutoff) ) {
 253                         $cutoff = $dbr->timestamp($opts['from']);
 254                 } else {
 255                         $opts->reset( 'from' );
 256                 }
 257
 258                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 259
 260
 261                 $hidePatrol = $wgUser->useRCPatrol() && $opts['hidepatrolled'];
 262                 $hideLoggedInUsers = $opts['hideliu'] && !$forcebot;
 263                 $hideAnonymousUsers = $opts['hideanons'] && !$forcebot;
 264
 265                 if( $opts['hideminor'] )  $conds['rc_minor'] = 0;
 266                 if( $opts['hidebots'] )   $conds['rc_bot'] = 0;
 267                 if( $hidePatrol )         $conds['rc_patrolled'] = 0;
 268                 if( $forcebot )           $conds['rc_bot'] = 1;
 269                 if( $hideLoggedInUsers )  $conds[] = 'rc_user = 0';
 270                 if( $hideAnonymousUsers ) $conds[] = 'rc_user != 0';
 271
 272                 if( $opts['hidemyself'] ) {
 273                         if( $wgUser->getId() ) {
 274                                 $conds[] = 'rc_user != ' . $dbr->addQuotes( $wgUser->getId() );
 275                         } else {
 276                                 $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 277                         }
 278                 }
 279
 280                 # Namespace filtering
 281                 if( $opts['namespace'] !== '' ) {
 282                         if( !$opts['invert'] ) {
 283                                 $conds[] = 'rc_namespace = ' . $dbr->addQuotes( $opts['namespace'] );
 284                         } else {
 285                                 $conds[] = 'rc_namespace != ' . $dbr->addQuotes( $opts['namespace'] );
 286                         }
 287                 }
 288
 289                 return $conds;
 290         }
 291
 292         /**
 293          * Process the query
 294          *
 295          * @param $conds array
 296          * @param $opts FormOptions
 297          * @return database result or false (for Recentchangeslinked only)
 298          */
 299         public function doMainQuery( $conds, $opts ) {
 300                 global $wgUser;
 301
 302                 $tables = array( 'recentchanges' );
 303                 $join_conds = array();
 304                 $query_options = array( 'USE INDEX' => array('recentchanges' => 'rc_timestamp') );
 305
 306                 $uid = $wgUser->getId();
 307                 $dbr = wfGetDB( DB_SLAVE );
 308                 $limit = $opts['limit'];
 309                 $namespace = $opts['namespace'];
 310                 $invert = $opts['invert'];
 311
 312                 // JOIN on watchlist for users
 313                 if( $uid ) {
 314                         $tables[] = 'watchlist';
 315                         $join_conds['watchlist'] = array('LEFT JOIN',
 316                                 "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace");
 317                 }
 318                 if ($wgUser->isAllowed("rollback")) {
 319                         $tables[] = 'page';
 320                         $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
 321                 }
 322                 // Tag stuff.
 323                 $fields = array();
 324                 // Fields are * in this case, so let the function modify an empty array to keep it happy.
 325                 ChangeTags::modifyDisplayQuery(
 326                         $tables, $fields, $conds, $join_conds, $query_options, $opts['tagfilter']
 327                 );
 328
 329                 if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options ) ) )
 330                         return false;
 331
 332                 // Don't use the new_namespace_time timestamp index if:
 333                 // (a) "All namespaces" selected
 334                 // (b) We want all pages NOT in a certain namespaces (inverted)
 335                 // (c) There is a tag to filter on (use tag index instead)
 336                 // (d) UNION + sort/limit is not an option for the DBMS
 337                 if( is_null($namespace)
 338                         || $invert
 339                         || $opts['tagfilter'] != ''
 340                         || !$dbr->unionSupportsOrderAndLimit() )
 341                 {
 342                         $res = $dbr->select( $tables, '*', $conds, __METHOD__,
 343                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) +
 344                                 $query_options,
 345                                 $join_conds );
 346                 // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
 347                 } else {
 348                         // New pages
 349                         $sqlNew = $dbr->selectSQLText( $tables, '*',
 350                                 array( 'rc_new' => 1 ) + $conds,
 351                                 __METHOD__,
 352                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 353                                         'USE INDEX' =>  array('recentchanges' => 'rc_timestamp') ),
 354                                 $join_conds );
 355                         // Old pages
 356                         $sqlOld = $dbr->selectSQLText( $tables, '*',
 357                                 array( 'rc_new' => 0 ) + $conds,
 358                                 __METHOD__,
 359                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 360                                         'USE INDEX' =>  array('recentchanges' => 'rc_timestamp') ),
 361                                 $join_conds );
 362                         # Join the two fast queries, and sort the result set
 363                         $sql = $dbr->unionQueries(array($sqlNew, $sqlOld), false).' ORDER BY rc_timestamp DESC';
 364                         $sql = $dbr->limitResult($sql, $limit, false);
 365                         $res = $dbr->query( $sql, __METHOD__ );
 366                 }
 367
 368                 return $res;
 369         }
 370
 371         /**
 372          * Send output to $wgOut, only called if not used feeds
 373          *
 374          * @param $rows array of database rows
 375          * @param $opts FormOptions
 376          */
 377         public function webOutput( $rows, $opts ) {
 378                 global $wgOut, $wgUser, $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
 379                 global $wgAllowCategorizedRecentChanges;
 380
 381                 $limit = $opts['limit'];
 382
 383                 if( !$this->including() ) {
 384                         // Output options box
 385                         $this->doHeader( $opts );
 386                 }
 387
 388                 // And now for the content
 389                 $wgOut->setFeedAppendQuery( $this->getFeedQuery() );
 390
 391                 if( $wgAllowCategorizedRecentChanges ) {
 392                         $this->filterByCategories( $rows, $opts );
 393                 }
 394
 395                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 396                 $watcherCache = array();
 397
 398                 $dbr = wfGetDB( DB_SLAVE );
 399
 400                 $counter = 1;
 401                 $list = ChangesList::newFromUser( $wgUser );
 402
 403                 $s = $list->beginRecentChangesList();
 404                 foreach( $rows as $obj ) {
 405                         if( $limit == 0 ) break;
 406                         $rc = RecentChange::newFromRow( $obj );
 407                         $rc->counter = $counter++;
 408                         # Check if the page has been updated since the last visit
 409                         if( $wgShowUpdatedMarker && !empty($obj->wl_notificationtimestamp) ) {
 410                                 $rc->notificationtimestamp = ($obj->rc_timestamp >= $obj->wl_notificationtimestamp);
 411                         } else {
 412                                 $rc->notificationtimestamp = false; // Default
 413                         }
 414                         # Check the number of users watching the page
 415                         $rc->numberofWatchingusers = 0; // Default
 416                         if( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 417                                 if( !isset($watcherCache[$obj->rc_namespace][$obj->rc_title]) ) {
 418                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 419                                                  $dbr->selectField( 'watchlist',
 420                                                         'COUNT(*)',
 421                                                         array(
 422                                                                 'wl_namespace' => $obj->rc_namespace,
 423                                                                 'wl_title' => $obj->rc_title,
 424                                                         ),
 425                                                         __METHOD__ . '-watchers' );
 426                                 }
 427                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 428                         }
 429                         $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 430                         --$limit;
 431                 }
 432                 $s .= $list->endRecentChangesList();
 433                 $wgOut->addHTML( $s );
 434         }
 435
 436         /**
 437          * Get the query string to append to feed link URLs.
 438          * This is overridden by RCL to add the target parameter
 439          */
 440         public function getFeedQuery() {
 441                 return false;
 442         }
 443
 444         /**
 445          * Return the text to be displayed above the changes
 446          *
 447          * @param $opts FormOptions
 448          * @return String: XHTML
 449          */
 450         public function doHeader( $opts ) {
 451                 global $wgScript, $wgOut;
 452
 453                 $this->setTopText( $wgOut, $opts );
 454
 455                 $defaults = $opts->getAllValues();
 456                 $nondefaults = $opts->getChangedValues();
 457                 $opts->consumeValues( array( 'namespace', 'invert', 'tagfilter',
 458                         'categories', 'categories_any' ) );
 459
 460                 $panel = array();
 461                 $panel[] = $this->optionsPanel( $defaults, $nondefaults );
 462                 $panel[] = '<hr />';
 463
 464                 $extraOpts = $this->getExtraOptions( $opts );
 465                 $extraOptsCount = count( $extraOpts );
 466                 $count = 0;
 467                 $submit = ' ' . Xml::submitbutton( wfMsg( 'allpagessubmit' ) );
 468
 469                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 470                 foreach( $extraOpts as $optionRow ) {
 471                         # Add submit button to the last row only
 472                         ++$count;
 473                         $addSubmit = $count === $extraOptsCount ? $submit : '';
 474
 475                         $out .= Xml::openElement( 'tr' );
 476                         if( is_array( $optionRow ) ) {
 477                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-label' ), $optionRow[0] );
 478                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input' ), $optionRow[1] . $addSubmit );
 479                         } else {
 480                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input', 'colspan' => 2 ), $optionRow . $addSubmit );
 481                         }
 482                         $out .= Xml::closeElement( 'tr' );
 483                 }
 484                 $out .= Xml::closeElement( 'table' );
 485
 486                 $unconsumed = $opts->getUnconsumedValues();
 487                 foreach( $unconsumed as $key => $value ) {
 488                         $out .= Xml::hidden( $key, $value );
 489                 }
 490
 491                 $t = $this->getTitle();
 492                 $out .= Xml::hidden( 'title', $t->getPrefixedText() );
 493                 $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
 494                 $panel[] = $form;
 495                 $panelString = implode( "\n", $panel );
 496
 497                 $wgOut->addHTML(
 498                         Xml::fieldset( wfMsg( 'recentchanges-legend' ), $panelString, array( 'class' => 'rcoptions' ) )
 499                 );
 500
 501                 $wgOut->addHTML( ChangesList::flagLegend() );
 502
 503                 $this->setBottomText( $wgOut, $opts );
 504         }
 505
 506         /**
 507          * Get options to be displayed in a form
 508          *
 509          * @param $opts FormOptions
 510          * @return array
 511          */
 512         function getExtraOptions( $opts ){
 513                 $extraOpts = array();
 514                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 515
 516                 global $wgAllowCategorizedRecentChanges;
 517                 if( $wgAllowCategorizedRecentChanges ) {
 518                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 519                 }
 520
 521                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 522                 if ( count($tagFilter) )
 523                         $extraOpts['tagfilter'] = $tagFilter;
 524
 525                 wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 526                 return $extraOpts;
 527         }
 528
 529         /**
 530          * Send the text to be displayed above the options
 531          *
 532          * @param $out OutputPage
 533          * @param $opts FormOptions
 534          */
 535         function setTopText( OutputPage $out, FormOptions $opts ){
 536                 $out->addWikiText( wfMsgForContentNoTrans( 'recentchangestext' ) );
 537         }
 538
 539         /**
 540          * Send the text to be displayed after the options, for use in
 541          * Recentchangeslinked
 542          *
 543          * @param $out OutputPage
 544          * @param $opts FormOptions
 545          */
 546         function setBottomText( OutputPage $out, FormOptions $opts ){}
 547
 548         /**
 549          * Creates the choose namespace selection
 550          *
 551          * @param $opts FormOptions
 552          * @return string
 553          */
 554         protected function namespaceFilterForm( FormOptions $opts ) {
 555                 $nsSelect = Xml::namespaceSelector( $opts['namespace'], '' );
 556                 $nsLabel = Xml::label( wfMsg('namespace'), 'namespace' );
 557                 $invert = Xml::checkLabel( wfMsg('invert'), 'invert', 'nsinvert', $opts['invert'] );
 558                 return array( $nsLabel, "$nsSelect $invert" );
 559         }
 560
 561         /**
 562          * Create a input to filter changes by categories
 563          *
 564          * @param $opts FormOptions
 565          * @return array
 566          */
 567         protected function categoryFilterForm( FormOptions $opts ) {
 568                 list( $label, $input ) = Xml::inputLabelSep( wfMsg('rc_categories'),
 569                         'categories', 'mw-categories', false, $opts['categories'] );
 570
 571                 $input .= ' ' . Xml::checkLabel( wfMsg('rc_categories_any'),
 572                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 573
 574                 return array( $label, $input );
 575         }
 576
 577         /**
 578          * Filter $rows by categories set in $opts
 579          *
 580          * @param $rows array of database rows
 581          * @param $opts FormOptions
 582          */
 583         function filterByCategories( &$rows, FormOptions $opts ) {
 584                 $categories = array_map( 'trim', explode( '|' , $opts['categories'] ) );
 585
 586                 if( !count( $categories ) ) {
 587                         return;
 588                 }
 589
 590                 # Filter categories
 591                 $cats = array();
 592                 foreach( $categories as $cat ) {
 593                         $cat = trim( $cat );
 594                         if( $cat == '' ) continue;
 595                         $cats[] = $cat;
 596                 }
 597
 598                 # Filter articles
 599                 $articles = array();
 600                 $a2r = array();
 601                 $rowsarr = array();
 602                 foreach( $rows AS $k => $r ) {
 603                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 604                         $id = $nt->getArticleID();
 605                         if( $id == 0 ) continue; # Page might have been deleted...
 606                         if( !in_array( $id, $articles ) ) {
 607                                 $articles[] = $id;
 608                         }
 609                         if( !isset( $a2r[$id] ) ) {
 610                                 $a2r[$id] = array();
 611                         }
 612                         $a2r[$id][] = $k;
 613                         $rowsarr[$k] = $r;
 614                 }
 615
 616                 # Shortcut?
 617                 if( !count( $articles ) || !count( $cats ) )
 618                         return ;
 619
 620                 # Look up
 621                 $c = new Categoryfinder;
 622                 $c->seed( $articles, $cats, $opts['categories_any'] ? "OR" : "AND" ) ;
 623                 $match = $c->run();
 624
 625                 # Filter
 626                 $newrows = array();
 627                 foreach( $match AS $id ) {
 628                         foreach( $a2r[$id] AS $rev ) {
 629                                 $k = $rev;
 630                                 $newrows[$k] = $rowsarr[$k];
 631                         }
 632                 }
 633                 $rows = $newrows;
 634         }
 635
 636         /**
 637          * Makes change an option link which carries all the other options
 638          * @param $title see Title
 639          * @param $override
 640          * @param $options
 641          */
 642         function makeOptionsLink( $title, $override, $options, $active = false ) {
 643                 global $wgUser;
 644                 $sk = $wgUser->getSkin();
 645                 $params = $override + $options;
 646                 if ( $active ) {
 647                         return $sk->link( $this->getTitle(), '<strong>' . htmlspecialchars( $title ) . '</strong>',
 648                                                           array(), $params, array( 'known' ) );
 649                 } else {
 650                         return $sk->link( $this->getTitle(), htmlspecialchars( $title ), array() , $params, array( 'known' ) );
 651                 }
 652         }
 653
 654         /**
 655          * Creates the options panel.
 656          * @param $defaults array
 657          * @param $nondefaults array
 658          */
 659         function optionsPanel( $defaults, $nondefaults ) {
 660                 global $wgLang, $wgUser, $wgRCLinkLimits, $wgRCLinkDays;
 661
 662                 $options = $nondefaults + $defaults;
 663
 664                 $note = '';
 665                 if( !wfEmptyMsg( 'rclegend', wfMsg('rclegend') ) ) {
 666                         $note .= '<div class="mw-rclegend">' . wfMsgExt( 'rclegend', array('parseinline') ) . "</div>\n";
 667                 }
 668                 if( $options['from'] ) {
 669                         $note .= wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 670                                 $wgLang->formatNum( $options['limit'] ),
 671                                 $wgLang->timeanddate( $options['from'], true ),
 672                                 $wgLang->date( $options['from'], true ),
 673                                 $wgLang->time( $options['from'], true ) ) . '<br />';
 674                 }
 675
 676                 # Sort data for display and make sure it's unique after we've added user data.
 677                 $wgRCLinkLimits[] = $options['limit'];
 678                 $wgRCLinkDays[] = $options['days'];
 679                 sort( $wgRCLinkLimits );
 680                 sort( $wgRCLinkDays );
 681                 $wgRCLinkLimits = array_unique( $wgRCLinkLimits );
 682                 $wgRCLinkDays = array_unique( $wgRCLinkDays );
 683
 684                 // limit links
 685                 foreach( $wgRCLinkLimits as $value ) {
 686                         $cl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 687                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] ) ;
 688                 }
 689                 $cl = $wgLang->pipeList( $cl );
 690
 691                 // day links, reset 'from' to none
 692                 foreach( $wgRCLinkDays as $value ) {
 693                         $dl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 694                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] ) ;
 695                 }
 696                 $dl = $wgLang->pipeList( $dl );
 697
 698
 699                 // show/hide links
 700                 $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ) );
 701                 $minorLink = $this->makeOptionsLink( $showhide[1-$options['hideminor']],
 702                         array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 703                 $botLink = $this->makeOptionsLink( $showhide[1-$options['hidebots']],
 704                         array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 705                 $anonsLink = $this->makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 706                         array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 707                 $liuLink   = $this->makeOptionsLink( $showhide[1-$options['hideliu']],
 708                         array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 709                 $patrLink  = $this->makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 710                         array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 711                 $myselfLink = $this->makeOptionsLink( $showhide[1-$options['hidemyself']],
 712                         array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 713
 714                 $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 715                 $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 716                 $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 717                 $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 718                 if( $wgUser->useRCPatrol() )
 719                         $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 720                 $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 721                 $hl = $wgLang->pipeList( $links );
 722
 723                 // show from this onward link
 724                 $now = $wgLang->timeanddate( wfTimestampNow(), true );
 725                 $tl =  $this->makeOptionsLink( $now, array( 'from' => wfTimestampNow() ), $nondefaults );
 726
 727                 $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter' ),
 728                         $cl, $dl, $hl );
 729                 $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter' ), $tl );
 730                 return "{$note}$rclinks<br />$rclistfrom";
 731         }
 732 }