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          * The feed format to output as (either 'rss' or 'atom'), or null if no
  32          * feed output was requested
  33          *
  34          * @var string $feedFormat
  35          */
  36         protected $feedFormat;
  37
  38         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  39                 parent::__construct( $name, $restriction );
  40         }
  41
  42         public function isIncludable() {
  43                 return true;
  44         }
  45
  46         /**
  47          * Get a FormOptions object containing the default options
  48          *
  49          * @return FormOptions
  50          */
  51         public function getDefaultOptions() {
  52                 $opts = parent::getDefaultOptions();
  53                 $user = $this->getUser();
  54
  55                 $opts->add( 'days', $user->getIntOption( 'rcdays' ) );
  56                 $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
  57                 $opts->add( 'from', '' );
  58
  59                 $opts->add( 'hideminor', $user->getBoolOption( 'hideminor' ) );
  60                 $opts->add( 'hidebots', true );
  61                 $opts->add( 'hideanons', false );
  62                 $opts->add( 'hideliu', false );
  63                 $opts->add( 'hidepatrolled', $user->getBoolOption( 'hidepatrolled' ) );
  64                 $opts->add( 'hidemyself', false );
  65
  66                 $opts->add( 'categories', '' );
  67                 $opts->add( 'categories_any', false );
  68                 $opts->add( 'tagfilter', '' );
  69
  70                 return $opts;
  71         }
  72
  73         public function validateOptions( FormOptions $opts ) {
  74                 global $wgFeedLimit;
  75                 $opts->validateIntBounds( 'limit', 0, $this->feedFormat ? $wgFeedLimit : 5000 );
  76         }
  77
  78         /**
  79          * Get custom show/hide filters
  80          *
  81          * @return array Map of filter URL param names to properties (msg/default)
  82          */
  83         protected function getCustomFilters() {
  84                 if ( $this->customFilters === null ) {
  85                         $this->customFilters = array();
  86                         wfRunHooks( 'SpecialRecentChangesFilters', array( $this, &$this->customFilters ) );
  87                 }
  88
  89                 return $this->customFilters;
  90         }
  91
  92         /**
  93          * Main execution point
  94          *
  95          * @param string $subpage
  96          */
  97         public function execute( $subpage ) {
  98                 $this->rcSubpage = $subpage;
  99                 $this->feedFormat = $this->including() ? null : $this->getRequest()->getVal( 'feed' );
 100
 101                 # 10 seconds server-side caching max
 102                 $this->getOutput()->setSquidMaxage( 10 );
 103                 # Check if the client has a cached version
 104                 $lastmod = $this->checkLastModified( $this->feedFormat );
 105                 if ( $lastmod === false ) {
 106                         return;
 107                 }
 108
 109                 $opts = $this->getOptions();
 110                 $this->setHeaders();
 111                 $this->outputHeader();
 112                 $this->addModules();
 113
 114                 // Fetch results, prepare a batch link existence check query
 115                 $conds = $this->buildMainQueryConds( $opts );
 116                 $rows = $this->doMainQuery( $conds, $opts );
 117                 if ( $rows === false ) {
 118                         if ( !$this->including() ) {
 119                                 $this->doHeader( $opts );
 120                         }
 121
 122                         return;
 123                 }
 124
 125                 if ( !$this->feedFormat ) {
 126                         $batch = new LinkBatch;
 127                         foreach ( $rows as $row ) {
 128                                 $batch->add( NS_USER, $row->rc_user_text );
 129                                 $batch->add( NS_USER_TALK, $row->rc_user_text );
 130                                 $batch->add( $row->rc_namespace, $row->rc_title );
 131                         }
 132                         $batch->execute();
 133                 }
 134                 if ( $this->feedFormat ) {
 135                         list( $changesFeed, $formatter ) = $this->getFeedObject( $this->feedFormat );
 136                         /** @var ChangesFeed $changesFeed */
 137                         $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
 138                 } else {
 139                         $this->webOutput( $rows, $opts );
 140                 }
 141
 142                 $rows->free();
 143         }
 144
 145         /**
 146          * Return an array with a ChangesFeed object and ChannelFeed object
 147          *
 148          * @param string $feedFormat Feed's format (either 'rss' or 'atom')
 149          * @return array
 150          */
 151         public function getFeedObject( $feedFormat ) {
 152                 $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
 153                 $formatter = $changesFeed->getFeedObject(
 154                         $this->msg( 'recentchanges' )->inContentLanguage()->text(),
 155                         $this->msg( 'recentchanges-feed-description' )->inContentLanguage()->text(),
 156                         $this->getPageTitle()->getFullURL()
 157                 );
 158
 159                 return array( $changesFeed, $formatter );
 160         }
 161
 162         /**
 163          * Process $par and put options found in $opts. Used when including the page.
 164          *
 165          * @param string $par
 166          * @param FormOptions $opts
 167          */
 168         public function parseParameters( $par, FormOptions $opts ) {
 169                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 170                 foreach ( $bits as $bit ) {
 171                         if ( 'hidebots' === $bit ) {
 172                                 $opts['hidebots'] = true;
 173                         }
 174                         if ( 'bots' === $bit ) {
 175                                 $opts['hidebots'] = false;
 176                         }
 177                         if ( 'hideminor' === $bit ) {
 178                                 $opts['hideminor'] = true;
 179                         }
 180                         if ( 'minor' === $bit ) {
 181                                 $opts['hideminor'] = false;
 182                         }
 183                         if ( 'hideliu' === $bit ) {
 184                                 $opts['hideliu'] = true;
 185                         }
 186                         if ( 'hidepatrolled' === $bit ) {
 187                                 $opts['hidepatrolled'] = true;
 188                         }
 189                         if ( 'hideanons' === $bit ) {
 190                                 $opts['hideanons'] = true;
 191                         }
 192                         if ( 'hidemyself' === $bit ) {
 193                                 $opts['hidemyself'] = true;
 194                         }
 195
 196                         if ( is_numeric( $bit ) ) {
 197                                 $opts['limit'] = $bit;
 198                         }
 199
 200                         $m = array();
 201                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 202                                 $opts['limit'] = $m[1];
 203                         }
 204                         if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 205                                 $opts['days'] = $m[1];
 206                         }
 207                         if ( preg_match( '/^namespace=(\d+)$/', $bit, $m ) ) {
 208                                 $opts['namespace'] = $m[1];
 209                         }
 210                 }
 211         }
 212
 213         /**
 214          * Get last modified date, for client caching
 215          * Don't use this if we are using the patrol feature, patrol changes don't
 216          * update the timestamp
 217          *
 218          * @param string $feedFormat
 219          * @return string|bool
 220          */
 221         public function checkLastModified( $feedFormat ) {
 222                 $dbr = wfGetDB( DB_SLAVE );
 223                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 224                 if ( $feedFormat || !$this->getUser()->useRCPatrol() ) {
 225                         if ( $lastmod && $this->getOutput()->checkLastModified( $lastmod ) ) {
 226                                 # Client cache fresh and headers sent, nothing more to do.
 227                                 return false;
 228                         }
 229                 }
 230
 231                 return $lastmod;
 232         }
 233
 234         /**
 235          * Return an array of conditions depending of options set in $opts
 236          *
 237          * @param FormOptions $opts
 238          * @return array
 239          */
 240         public function buildMainQueryConds( FormOptions $opts ) {
 241                 $dbr = wfGetDB( DB_SLAVE );
 242                 $conds = array();
 243
 244                 # It makes no sense to hide both anons and logged-in users
 245                 # Where this occurs, force anons to be shown
 246                 $forcebot = false;
 247                 if ( $opts['hideanons'] && $opts['hideliu'] ) {
 248                         # Check if the user wants to show bots only
 249                         if ( $opts['hidebots'] ) {
 250                                 $opts['hideanons'] = false;
 251                         } else {
 252                                 $forcebot = true;
 253                                 $opts['hidebots'] = false;
 254                         }
 255                 }
 256
 257                 // Calculate cutoff
 258                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 259                 $cutoff_unixtime = $cutoff_unixtime - ( $cutoff_unixtime % 86400 );
 260                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 261
 262                 $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
 263                 if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
 264                         $cutoff = $dbr->timestamp( $opts['from'] );
 265                 } else {
 266                         $opts->reset( 'from' );
 267                 }
 268
 269                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 270
 271                 $hidePatrol = $this->getUser()->useRCPatrol() && $opts['hidepatrolled'];
 272                 $hideLoggedInUsers = $opts['hideliu'] && !$forcebot;
 273                 $hideAnonymousUsers = $opts['hideanons'] && !$forcebot;
 274
 275                 if ( $opts['hideminor'] ) {
 276                         $conds['rc_minor'] = 0;
 277                 }
 278                 if ( $opts['hidebots'] ) {
 279                         $conds['rc_bot'] = 0;
 280                 }
 281                 if ( $hidePatrol ) {
 282                         $conds['rc_patrolled'] = 0;
 283                 }
 284                 if ( $forcebot ) {
 285                         $conds['rc_bot'] = 1;
 286                 }
 287                 if ( $hideLoggedInUsers ) {
 288                         $conds[] = 'rc_user = 0';
 289                 }
 290                 if ( $hideAnonymousUsers ) {
 291                         $conds[] = 'rc_user != 0';
 292                 }
 293
 294                 if ( $opts['hidemyself'] ) {
 295                         if ( $this->getUser()->getId() ) {
 296                                 $conds[] = 'rc_user != ' . $dbr->addQuotes( $this->getUser()->getId() );
 297                         } else {
 298                                 $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $this->getUser()->getName() );
 299                         }
 300                 }
 301
 302                 # Namespace filtering
 303                 if ( $opts['namespace'] !== '' ) {
 304                         $selectedNS = $dbr->addQuotes( $opts['namespace'] );
 305                         $operator = $opts['invert'] ? '!=' : '=';
 306                         $boolean = $opts['invert'] ? 'AND' : 'OR';
 307
 308                         # namespace association (bug 2429)
 309                         if ( !$opts['associated'] ) {
 310                                 $condition = "rc_namespace $operator $selectedNS";
 311                         } else {
 312                                 # Also add the associated namespace
 313                                 $associatedNS = $dbr->addQuotes(
 314                                         MWNamespace::getAssociated( $opts['namespace'] )
 315                                 );
 316                                 $condition = "(rc_namespace $operator $selectedNS "
 317                                         . $boolean
 318                                         . " rc_namespace $operator $associatedNS)";
 319                         }
 320
 321                         $conds[] = $condition;
 322                 }
 323
 324                 return $conds;
 325         }
 326
 327         /**
 328          * Process the query
 329          *
 330          * @param array $conds
 331          * @param FormOptions $opts
 332          * @return bool|ResultWrapper Result or false (for Recentchangeslinked only)
 333          */
 334         public function doMainQuery( $conds, $opts ) {
 335                 $tables = array( 'recentchanges' );
 336                 $join_conds = array();
 337                 $query_options = array();
 338
 339                 $uid = $this->getUser()->getId();
 340                 $dbr = wfGetDB( DB_SLAVE );
 341                 $limit = $opts['limit'];
 342                 $namespace = $opts['namespace'];
 343                 $invert = $opts['invert'];
 344                 $associated = $opts['associated'];
 345
 346                 $fields = RecentChange::selectFields();
 347                 // JOIN on watchlist for users
 348                 if ( $uid && $this->getUser()->isAllowed( 'viewmywatchlist' ) ) {
 349                         $tables[] = 'watchlist';
 350                         $fields[] = 'wl_user';
 351                         $fields[] = 'wl_notificationtimestamp';
 352                         $join_conds['watchlist'] = array( 'LEFT JOIN', array(
 353                                 'wl_user' => $uid,
 354                                 'wl_title=rc_title',
 355                                 'wl_namespace=rc_namespace'
 356                         ) );
 357                 }
 358                 if ( $this->getUser()->isAllowed( 'rollback' ) ) {
 359                         $tables[] = 'page';
 360                         $fields[] = 'page_latest';
 361                         $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
 362                 }
 363                 // Tag stuff.
 364                 ChangeTags::modifyDisplayQuery(
 365                         $tables,
 366                         $fields,
 367                         $conds,
 368                         $join_conds,
 369                         $query_options,
 370                         $opts['tagfilter']
 371                 );
 372
 373                 if ( !wfRunHooks( 'SpecialRecentChangesQuery',
 374                         array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ) )
 375                 ) {
 376                         return false;
 377                 }
 378
 379                 // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 380                 // knowledge to use an index merge if it wants (it may use some other index though).
 381                 return $dbr->select(
 382                         $tables,
 383                         $fields,
 384                         $conds + array( 'rc_new' => array( 0, 1 ) ),
 385                         __METHOD__,
 386                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) + $query_options,
 387                         $join_conds
 388                 );
 389         }
 390
 391         /**
 392          * Send output to the OutputPage object, only called if not used feeds
 393          *
 394          * @param array $rows Database rows
 395          * @param FormOptions $opts
 396          */
 397         public function webOutput( $rows, $opts ) {
 398                 global $wgRCShowWatchingUsers, $wgShowUpdatedMarker, $wgAllowCategorizedRecentChanges;
 399
 400                 // Build the final data
 401
 402                 if ( $wgAllowCategorizedRecentChanges ) {
 403                         $this->filterByCategories( $rows, $opts );
 404                 }
 405
 406                 $limit = $opts['limit'];
 407
 408                 $showWatcherCount = $wgRCShowWatchingUsers && $this->getUser()->getOption( 'shownumberswatching' );
 409                 $watcherCache = array();
 410
 411                 $dbr = wfGetDB( DB_SLAVE );
 412
 413                 $counter = 1;
 414                 $list = ChangesList::newFromContext( $this->getContext() );
 415
 416                 $rclistOutput = $list->beginRecentChangesList();
 417                 foreach ( $rows as $obj ) {
 418                         if ( $limit == 0 ) {
 419                                 break;
 420                         }
 421                         $rc = RecentChange::newFromRow( $obj );
 422                         $rc->counter = $counter++;
 423                         # Check if the page has been updated since the last visit
 424                         if ( $wgShowUpdatedMarker && !empty( $obj->wl_notificationtimestamp ) ) {
 425                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 426                         } else {
 427                                 $rc->notificationtimestamp = false; // Default
 428                         }
 429                         # Check the number of users watching the page
 430                         $rc->numberofWatchingusers = 0; // Default
 431                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 432                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 433                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 434                                                 $dbr->selectField(
 435                                                         'watchlist',
 436                                                         'COUNT(*)',
 437                                                         array(
 438                                                                 'wl_namespace' => $obj->rc_namespace,
 439                                                                 'wl_title' => $obj->rc_title,
 440                                                         ),
 441                                                         __METHOD__ . '-watchers'
 442                                                 );
 443                                 }
 444                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 445                         }
 446
 447                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 448                         if ( $changeLine !== false ) {
 449                                 $rclistOutput .= $changeLine;
 450                                 --$limit;
 451                         }
 452                 }
 453                 $rclistOutput .= $list->endRecentChangesList();
 454
 455                 // Print things out
 456
 457                 if ( !$this->including() ) {
 458                         // Output options box
 459                         $this->doHeader( $opts );
 460                 }
 461
 462                 // And now for the content
 463                 $feedQuery = $this->getFeedQuery();
 464                 if ( $feedQuery !== '' ) {
 465                         $this->getOutput()->setFeedAppendQuery( $feedQuery );
 466                 } else {
 467                         $this->getOutput()->setFeedAppendQuery( false );
 468                 }
 469
 470                 if ( $rows->numRows() === 0 ) {
 471                         $this->getOutput()->addHtml(
 472                                 '<div class="mw-changeslist-empty">' . $this->msg( 'recentchanges-noresult' )->parse() . '</div>'
 473                         );
 474                 } else {
 475                         $this->getOutput()->addHTML( $rclistOutput );
 476                 }
 477         }
 478
 479         /**
 480          * Get the query string to append to feed link URLs.
 481          *
 482          * @return string
 483          */
 484         public function getFeedQuery() {
 485                 global $wgFeedLimit;
 486
 487                 $this->getOptions()->validateIntBounds( 'limit', 0, $wgFeedLimit );
 488                 $options = $this->getOptions()->getChangedValues();
 489
 490                 // wfArrayToCgi() omits options set to null or false
 491                 foreach ( $options as &$value ) {
 492                         if ( $value === false ) {
 493                                 $value = '0';
 494                         }
 495                 }
 496                 unset( $value );
 497
 498                 return wfArrayToCgi( $options );
 499         }
 500
 501         /**
 502          * Return the text to be displayed above the changes
 503          *
 504          * @param FormOptions $opts
 505          * @return string XHTML
 506          */
 507         public function doHeader( $opts ) {
 508                 global $wgScript;
 509
 510                 $this->setTopText( $opts );
 511
 512                 $defaults = $opts->getAllValues();
 513                 $nondefaults = $opts->getChangedValues();
 514
 515                 $panel = array();
 516                 $panel[] = self::makeLegend( $this->getContext() );
 517                 $panel[] = $this->optionsPanel( $defaults, $nondefaults );
 518                 $panel[] = '<hr />';
 519
 520                 $extraOpts = $this->getExtraOptions( $opts );
 521                 $extraOptsCount = count( $extraOpts );
 522                 $count = 0;
 523                 $submit = ' ' . Xml::submitbutton( $this->msg( 'allpagessubmit' )->text() );
 524
 525                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 526                 foreach ( $extraOpts as $name => $optionRow ) {
 527                         # Add submit button to the last row only
 528                         ++$count;
 529                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 530
 531                         $out .= Xml::openElement( 'tr' );
 532                         if ( is_array( $optionRow ) ) {
 533                                 $out .= Xml::tags(
 534                                         'td',
 535                                         array( 'class' => 'mw-label mw-' . $name . '-label' ),
 536                                         $optionRow[0]
 537                                 );
 538                                 $out .= Xml::tags(
 539                                         'td',
 540                                         array( 'class' => 'mw-input' ),
 541                                         $optionRow[1] . $addSubmit
 542                                 );
 543                         } else {
 544                                 $out .= Xml::tags(
 545                                         'td',
 546                                         array( 'class' => 'mw-input', 'colspan' => 2 ),
 547                                         $optionRow . $addSubmit
 548                                 );
 549                         }
 550                         $out .= Xml::closeElement( 'tr' );
 551                 }
 552                 $out .= Xml::closeElement( 'table' );
 553
 554                 $unconsumed = $opts->getUnconsumedValues();
 555                 foreach ( $unconsumed as $key => $value ) {
 556                         $out .= Html::hidden( $key, $value );
 557                 }
 558
 559                 $t = $this->getPageTitle();
 560                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 561                 $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
 562                 $panel[] = $form;
 563                 $panelString = implode( "\n", $panel );
 564
 565                 $this->getOutput()->addHTML(
 566                         Xml::fieldset(
 567                                 $this->msg( 'recentchanges-legend' )->text(),
 568                                 $panelString,
 569                                 array( 'class' => 'rcoptions' )
 570                         )
 571                 );
 572
 573                 $this->setBottomText( $opts );
 574         }
 575
 576         /**
 577          * Get options to be displayed in a form
 578          *
 579          * @param FormOptions $opts
 580          * @return array
 581          */
 582         function getExtraOptions( $opts ) {
 583                 $opts->consumeValues( array(
 584                         'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
 585                 ) );
 586
 587                 $extraOpts = array();
 588                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 589
 590                 global $wgAllowCategorizedRecentChanges;
 591                 if ( $wgAllowCategorizedRecentChanges ) {
 592                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 593                 }
 594
 595                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 596                 if ( count( $tagFilter ) ) {
 597                         $extraOpts['tagfilter'] = $tagFilter;
 598                 }
 599
 600                 // Don't fire the hook for subclasses. (Or should we?)
 601                 if ( $this->getName() === 'Recentchanges' ) {
 602                         wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 603                 }
 604
 605                 return $extraOpts;
 606         }
 607
 608         /**
 609          * Send the text to be displayed above the options
 610          *
 611          * @param FormOptions $opts Unused
 612          */
 613         function setTopText( FormOptions $opts ) {
 614                 global $wgContLang;
 615
 616                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 617                 if ( !$message->isDisabled() ) {
 618                         $this->getOutput()->addWikiText(
 619                                 Html::rawElement( 'p',
 620                                         array( 'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ),
 621                                         "\n" . $message->plain() . "\n"
 622                                 ),
 623                                 /* $lineStart */ false,
 624                                 /* $interface */ false
 625                         );
 626                 }
 627         }
 628
 629         /**
 630          * Creates the choose namespace selection
 631          *
 632          * @param FormOptions $opts
 633          * @return string
 634          */
 635         protected function namespaceFilterForm( FormOptions $opts ) {
 636                 $nsSelect = Html::namespaceSelector(
 637                         array( 'selected' => $opts['namespace'], 'all' => '' ),
 638                         array( 'name' => 'namespace', 'id' => 'namespace' )
 639                 );
 640                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 641                 $invert = Xml::checkLabel(
 642                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 643                         $opts['invert'],
 644                         array( 'title' => $this->msg( 'tooltip-invert' )->text() )
 645                 );
 646                 $associated = Xml::checkLabel(
 647                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 648                         $opts['associated'],
 649                         array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
 650                 );
 651
 652                 return array( $nsLabel, "$nsSelect $invert $associated" );
 653         }
 654
 655         /**
 656          * Create a input to filter changes by categories
 657          *
 658          * @param FormOptions $opts
 659          * @return array
 660          */
 661         protected function categoryFilterForm( FormOptions $opts ) {
 662                 list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
 663                         'categories', 'mw-categories', false, $opts['categories'] );
 664
 665                 $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
 666                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 667
 668                 return array( $label, $input );
 669         }
 670
 671         /**
 672          * Filter $rows by categories set in $opts
 673          *
 674          * @param array $rows Database rows
 675          * @param FormOptions $opts
 676          */
 677         function filterByCategories( &$rows, FormOptions $opts ) {
 678                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 679
 680                 if ( !count( $categories ) ) {
 681                         return;
 682                 }
 683
 684                 # Filter categories
 685                 $cats = array();
 686                 foreach ( $categories as $cat ) {
 687                         $cat = trim( $cat );
 688                         if ( $cat == '' ) {
 689                                 continue;
 690                         }
 691                         $cats[] = $cat;
 692                 }
 693
 694                 # Filter articles
 695                 $articles = array();
 696                 $a2r = array();
 697                 $rowsarr = array();
 698                 foreach ( $rows as $k => $r ) {
 699                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 700                         $id = $nt->getArticleID();
 701                         if ( $id == 0 ) {
 702                                 continue; # Page might have been deleted...
 703                         }
 704                         if ( !in_array( $id, $articles ) ) {
 705                                 $articles[] = $id;
 706                         }
 707                         if ( !isset( $a2r[$id] ) ) {
 708                                 $a2r[$id] = array();
 709                         }
 710                         $a2r[$id][] = $k;
 711                         $rowsarr[$k] = $r;
 712                 }
 713
 714                 # Shortcut?
 715                 if ( !count( $articles ) || !count( $cats ) ) {
 716                         return;
 717                 }
 718
 719                 # Look up
 720                 $c = new Categoryfinder;
 721                 $c->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 722                 $match = $c->run();
 723
 724                 # Filter
 725                 $newrows = array();
 726                 foreach ( $match as $id ) {
 727                         foreach ( $a2r[$id] as $rev ) {
 728                                 $k = $rev;
 729                                 $newrows[$k] = $rowsarr[$k];
 730                         }
 731                 }
 732                 $rows = $newrows;
 733         }
 734
 735         /**
 736          * Makes change an option link which carries all the other options
 737          *
 738          * @param string $title Title
 739          * @param array $override Options to override
 740          * @param array $options Current options
 741          * @param bool $active Whether to show the link in bold
 742          * @return string
 743          */
 744         function makeOptionsLink( $title, $override, $options, $active = false ) {
 745                 $params = $override + $options;
 746
 747                 // Bug 36524: false values have be converted to "0" otherwise
 748                 // wfArrayToCgi() will omit it them.
 749                 foreach ( $params as &$value ) {
 750                         if ( $value === false ) {
 751                                 $value = '0';
 752                         }
 753                 }
 754                 unset( $value );
 755
 756                 $text = htmlspecialchars( $title );
 757                 if ( $active ) {
 758                         $text = '<strong>' . $text . '</strong>';
 759                 }
 760
 761                 return Linker::linkKnown( $this->getPageTitle(), $text, array(), $params );
 762         }
 763
 764         /**
 765          * Creates the options panel.
 766          *
 767          * @param array $defaults
 768          * @param array $nondefaults
 769          * @return string
 770          */
 771         function optionsPanel( $defaults, $nondefaults ) {
 772                 global $wgRCLinkLimits, $wgRCLinkDays;
 773
 774                 $options = $nondefaults + $defaults;
 775
 776                 $note = '';
 777                 $msg = $this->msg( 'rclegend' );
 778                 if ( !$msg->isDisabled() ) {
 779                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 780                 }
 781
 782                 $lang = $this->getLanguage();
 783                 $user = $this->getUser();
 784                 if ( $options['from'] ) {
 785                         $note .= $this->msg( 'rcnotefrom' )->numParams( $options['limit'] )->params(
 786                                 $lang->userTimeAndDate( $options['from'], $user ),
 787                                 $lang->userDate( $options['from'], $user ),
 788                                 $lang->userTime( $options['from'], $user ) )->parse() . '<br />';
 789                 }
 790
 791                 # Sort data for display and make sure it's unique after we've added user data.
 792                 $linkLimits = $wgRCLinkLimits;
 793                 $linkLimits[] = $options['limit'];
 794                 sort( $linkLimits );
 795                 $linkLimits = array_unique( $linkLimits );
 796
 797                 $linkDays = $wgRCLinkDays;
 798                 $linkDays[] = $options['days'];
 799                 sort( $linkDays );
 800                 $linkDays = array_unique( $linkDays );
 801
 802                 // limit links
 803                 $cl = array();
 804                 foreach ( $linkLimits as $value ) {
 805                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 806                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] );
 807                 }
 808                 $cl = $lang->pipeList( $cl );
 809
 810                 // day links, reset 'from' to none
 811                 $dl = array();
 812                 foreach ( $linkDays as $value ) {
 813                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 814                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] );
 815                 }
 816                 $dl = $lang->pipeList( $dl );
 817
 818                 // show/hide links
 819                 $showhide = array( $this->msg( 'show' )->text(), $this->msg( 'hide' )->text() );
 820                 $filters = array(
 821                         'hideminor' => 'rcshowhideminor',
 822                         'hidebots' => 'rcshowhidebots',
 823                         'hideanons' => 'rcshowhideanons',
 824                         'hideliu' => 'rcshowhideliu',
 825                         'hidepatrolled' => 'rcshowhidepatr',
 826                         'hidemyself' => 'rcshowhidemine'
 827                 );
 828                 foreach ( $this->getCustomFilters() as $key => $params ) {
 829                         $filters[$key] = $params['msg'];
 830                 }
 831                 // Disable some if needed
 832                 if ( !$user->useRCPatrol() ) {
 833                         unset( $filters['hidepatrolled'] );
 834                 }
 835
 836                 $links = array();
 837                 foreach ( $filters as $key => $msg ) {
 838                         $link = $this->makeOptionsLink( $showhide[1 - $options[$key]],
 839                                 array( $key => 1 - $options[$key] ), $nondefaults );
 840                         $links[] = $this->msg( $msg )->rawParams( $link )->escaped();
 841                 }
 842
 843                 // show from this onward link
 844                 $timestamp = wfTimestampNow();
 845                 $now = $lang->userTimeAndDate( $timestamp, $user );
 846                 $tl = $this->makeOptionsLink(
 847                         $now, array( 'from' => $timestamp ), $nondefaults
 848                 );
 849
 850                 $rclinks = $this->msg( 'rclinks' )->rawParams( $cl, $dl, $lang->pipeList( $links ) )
 851                         ->parse();
 852                 $rclistfrom = $this->msg( 'rclistfrom' )->rawParams( $tl )->parse();
 853
 854                 return "{$note}$rclinks<br />$rclistfrom";
 855         }
 856
 857         /**
 858          * Add page-specific modules.
 859          */
 860         protected function addModules() {
 861                 parent::addModules();
 862                 $out = $this->getOutput();
 863                 $out->addModules( 'mediawiki.special.recentchanges' );
 864         }
 865 }