includes/specials/SpecialWatchlist.php

   1 <?php
   2 /**
   3  * Implements Special:Watchlist
   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  * limited to user-defined list of titles.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialWatchlist extends ChangesListSpecialPage {
  31         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  32                 parent::__construct( $page, $restriction );
  33         }
  34
  35         /**
  36          * Main execution point
  37          *
  38          * @param string $subpage
  39          */
  40         function execute( $subpage ) {
  41                 // Anons don't get a watchlist
  42                 $this->requireLogin( 'watchlistanontext' );
  43
  44                 $output = $this->getOutput();
  45                 $request = $this->getRequest();
  46                 $this->addHelpLink( 'Help:Watching pages' );
  47                 $output->addModules( array(
  48                         'mediawiki.special.changeslist.visitedstatus',
  49                 ) );
  50
  51                 $mode = SpecialEditWatchlist::getMode( $request, $subpage );
  52                 if ( $mode !== false ) {
  53                         if ( $mode === SpecialEditWatchlist::EDIT_RAW ) {
  54                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'raw' );
  55                         } elseif ( $mode === SpecialEditWatchlist::EDIT_CLEAR ) {
  56                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'clear' );
  57                         } else {
  58                                 $title = SpecialPage::getTitleFor( 'EditWatchlist' );
  59                         }
  60
  61                         $output->redirect( $title->getLocalURL() );
  62
  63                         return;
  64                 }
  65
  66                 $this->checkPermissions();
  67
  68                 $user = $this->getUser();
  69                 $opts = $this->getOptions();
  70
  71                 $config = $this->getConfig();
  72                 if ( ( $config->get( 'EnotifWatchlist' ) || $config->get( 'ShowUpdatedMarker' ) )
  73                         && $request->getVal( 'reset' )
  74                         && $request->wasPosted()
  75                 ) {
  76                         $user->clearAllNotifications();
  77                         $output->redirect( $this->getPageTitle()->getFullURL( $opts->getChangedValues() ) );
  78
  79                         return;
  80                 }
  81
  82                 parent::execute( $subpage );
  83         }
  84
  85         /**
  86          * Return an array of subpages that this special page will accept.
  87          *
  88          * @see also SpecialEditWatchlist::getSubpagesForPrefixSearch
  89          * @return string[] subpages
  90          */
  91         public function getSubpagesForPrefixSearch() {
  92                 return array(
  93                         'clear',
  94                         'edit',
  95                         'raw',
  96                 );
  97         }
  98
  99         /**
 100          * Get a FormOptions object containing the default options
 101          *
 102          * @return FormOptions
 103          */
 104         public function getDefaultOptions() {
 105                 $opts = parent::getDefaultOptions();
 106                 $user = $this->getUser();
 107
 108                 $opts->add( 'days', $user->getOption( 'watchlistdays' ), FormOptions::FLOAT );
 109                 $opts->add( 'extended', $user->getBoolOption( 'extendwatchlist' ) );
 110                 if ( $this->getRequest()->getVal( 'action' ) == 'submit' ) {
 111                         // The user has submitted the form, so we dont need the default values
 112                         return $opts;
 113                 }
 114
 115                 $opts->add( 'hideminor', $user->getBoolOption( 'watchlisthideminor' ) );
 116                 $opts->add( 'hidebots', $user->getBoolOption( 'watchlisthidebots' ) );
 117                 $opts->add( 'hideanons', $user->getBoolOption( 'watchlisthideanons' ) );
 118                 $opts->add( 'hideliu', $user->getBoolOption( 'watchlisthideliu' ) );
 119                 $opts->add( 'hidepatrolled', $user->getBoolOption( 'watchlisthidepatrolled' ) );
 120                 $opts->add( 'hidemyself', $user->getBoolOption( 'watchlisthideown' ) );
 121
 122                 if ( $this->getConfig()->get( 'RCWatchCategoryMembership' ) ) {
 123                         $opts->add( 'hidecategorization', $user->getBoolOption( 'watchlisthidecategorization' ) );
 124                 }
 125
 126                 return $opts;
 127         }
 128
 129         /**
 130          * Get custom show/hide filters
 131          *
 132          * @return array Map of filter URL param names to properties (msg/default)
 133          */
 134         protected function getCustomFilters() {
 135                 if ( $this->customFilters === null ) {
 136                         $this->customFilters = parent::getCustomFilters();
 137                         Hooks::run( 'SpecialWatchlistFilters', array( $this, &$this->customFilters ), '1.23' );
 138                 }
 139
 140                 return $this->customFilters;
 141         }
 142
 143         /**
 144          * Fetch values for a FormOptions object from the WebRequest associated with this instance.
 145          *
 146          * Maps old pre-1.23 request parameters Watchlist used to use (different from Recentchanges' ones)
 147          * to the current ones.
 148          *
 149          * @param FormOptions $opts
 150          * @return FormOptions
 151          */
 152         protected function fetchOptionsFromRequest( $opts ) {
 153                 static $compatibilityMap = array(
 154                         'hideMinor' => 'hideminor',
 155                         'hideBots' => 'hidebots',
 156                         'hideAnons' => 'hideanons',
 157                         'hideLiu' => 'hideliu',
 158                         'hidePatrolled' => 'hidepatrolled',
 159                         'hideOwn' => 'hidemyself',
 160                 );
 161
 162                 $params = $this->getRequest()->getValues();
 163                 foreach ( $compatibilityMap as $from => $to ) {
 164                         if ( isset( $params[$from] ) ) {
 165                                 $params[$to] = $params[$from];
 166                                 unset( $params[$from] );
 167                         }
 168                 }
 169
 170                 // Not the prettiest way to achieve this… FormOptions internally depends on data sanitization
 171                 // methods defined on WebRequest and removing this dependency would cause some code duplication.
 172                 $request = new DerivativeRequest( $this->getRequest(), $params );
 173                 $opts->fetchValuesFromRequest( $request );
 174
 175                 return $opts;
 176         }
 177
 178         /**
 179          * Return an array of conditions depending of options set in $opts
 180          *
 181          * @param FormOptions $opts
 182          * @return array
 183          */
 184         public function buildMainQueryConds( FormOptions $opts ) {
 185                 $dbr = $this->getDB();
 186                 $conds = parent::buildMainQueryConds( $opts );
 187
 188                 // Calculate cutoff
 189                 if ( $opts['days'] > 0 ) {
 190                         $conds[] = 'rc_timestamp > ' .
 191                                 $dbr->addQuotes( $dbr->timestamp( time() - intval( $opts['days'] * 86400 ) ) );
 192                 }
 193
 194                 return $conds;
 195         }
 196
 197         /**
 198          * Process the query
 199          *
 200          * @param array $conds
 201          * @param FormOptions $opts
 202          * @return bool|ResultWrapper Result or false (for Recentchangeslinked only)
 203          */
 204         public function doMainQuery( $conds, $opts ) {
 205                 $dbr = $this->getDB();
 206                 $user = $this->getUser();
 207
 208                 # Toggle watchlist content (all recent edits or just the latest)
 209                 if ( $opts['extended'] ) {
 210                         $limitWatchlist = $user->getIntOption( 'wllimit' );
 211                         $usePage = false;
 212                 } else {
 213                         # Top log Ids for a page are not stored
 214                         $nonRevisionTypes = array( RC_LOG );
 215                         Hooks::run( 'SpecialWatchlistGetNonRevisionTypes', array( &$nonRevisionTypes ) );
 216                         if ( $nonRevisionTypes ) {
 217                                 $conds[] = $dbr->makeList(
 218                                         array(
 219                                                 'rc_this_oldid=page_latest',
 220                                                 'rc_type' => $nonRevisionTypes,
 221                                         ),
 222                                         LIST_OR
 223                                 );
 224                         }
 225                         $limitWatchlist = 0;
 226                         $usePage = true;
 227                 }
 228
 229                 $tables = array( 'recentchanges', 'watchlist' );
 230                 $fields = RecentChange::selectFields();
 231                 $query_options = array( 'ORDER BY' => 'rc_timestamp DESC' );
 232                 $join_conds = array(
 233                         'watchlist' => array(
 234                                 'INNER JOIN',
 235                                 array(
 236                                         'wl_user' => $user->getId(),
 237                                         'wl_namespace=rc_namespace',
 238                                         'wl_title=rc_title'
 239                                 ),
 240                         ),
 241                 );
 242
 243                 if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 244                         $fields[] = 'wl_notificationtimestamp';
 245                 }
 246                 if ( $limitWatchlist ) {
 247                         $query_options['LIMIT'] = $limitWatchlist;
 248                 }
 249
 250                 $rollbacker = $user->isAllowed( 'rollback' );
 251                 if ( $usePage || $rollbacker ) {
 252                         $tables[] = 'page';
 253                         $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
 254                         if ( $rollbacker ) {
 255                                 $fields[] = 'page_latest';
 256                         }
 257                 }
 258
 259                 // Log entries with DELETED_ACTION must not show up unless the user has
 260                 // the necessary rights.
 261                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 262                         $bitmask = LogPage::DELETED_ACTION;
 263                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 264                         $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 265                 } else {
 266                         $bitmask = 0;
 267                 }
 268                 if ( $bitmask ) {
 269                         $conds[] = $dbr->makeList( array(
 270                                 'rc_type != ' . RC_LOG,
 271                                 $dbr->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 272                         ), LIST_OR );
 273                 }
 274
 275                 ChangeTags::modifyDisplayQuery(
 276                         $tables,
 277                         $fields,
 278                         $conds,
 279                         $join_conds,
 280                         $query_options,
 281                         ''
 282                 );
 283
 284                 $this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts );
 285
 286                 return $dbr->select(
 287                         $tables,
 288                         $fields,
 289                         $conds,
 290                         __METHOD__,
 291                         $query_options,
 292                         $join_conds
 293                 );
 294         }
 295
 296         protected function runMainQueryHook( &$tables, &$fields, &$conds, &$query_options,
 297                 &$join_conds, $opts
 298         ) {
 299                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 300                         && Hooks::run(
 301                                 'SpecialWatchlistQuery',
 302                                 array( &$conds, &$tables, &$join_conds, &$fields, $opts ),
 303                                 '1.23'
 304                         );
 305         }
 306
 307         /**
 308          * Return a IDatabase object for reading
 309          *
 310          * @return IDatabase
 311          */
 312         protected function getDB() {
 313                 return wfGetDB( DB_SLAVE, 'watchlist' );
 314         }
 315
 316         /**
 317          * Output feed links.
 318          */
 319         public function outputFeedLinks() {
 320                 $user = $this->getUser();
 321                 $wlToken = $user->getTokenFromOption( 'watchlisttoken' );
 322                 if ( $wlToken ) {
 323                         $this->addFeedLinks( array(
 324                                 'action' => 'feedwatchlist',
 325                                 'allrev' => 1,
 326                                 'wlowner' => $user->getName(),
 327                                 'wltoken' => $wlToken,
 328                         ) );
 329                 }
 330         }
 331
 332         /**
 333          * Build and output the actual changes list.
 334          *
 335          * @param ResultWrapper $rows Database rows
 336          * @param FormOptions $opts
 337          */
 338         public function outputChangesList( $rows, $opts ) {
 339                 $dbr = $this->getDB();
 340                 $user = $this->getUser();
 341                 $output = $this->getOutput();
 342
 343                 # Show a message about slave lag, if applicable
 344                 $lag = wfGetLB()->safeGetLag( $dbr );
 345                 if ( $lag > 0 ) {
 346                         $output->showLagWarning( $lag );
 347                 }
 348
 349                 # If no rows to display, show message before try to render the list
 350                 if ( $rows->numRows() == 0 ) {
 351                         $output->wrapWikiMsg(
 352                                 "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
 353                         );
 354                         return;
 355                 }
 356
 357                 $dbr->dataSeek( $rows, 0 );
 358
 359                 $list = ChangesList::newFromContext( $this->getContext() );
 360                 $list->setWatchlistDivs();
 361                 $list->initChangesListRows( $rows );
 362                 $dbr->dataSeek( $rows, 0 );
 363
 364                 $s = $list->beginRecentChangesList();
 365                 $counter = 1;
 366                 foreach ( $rows as $obj ) {
 367                         # Make RC entry
 368                         $rc = RecentChange::newFromRow( $obj );
 369                         $rc->counter = $counter++;
 370
 371                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 372                                 $updated = $obj->wl_notificationtimestamp;
 373                         } else {
 374                                 $updated = false;
 375                         }
 376
 377                         if ( $this->getConfig()->get( 'RCShowWatchingUsers' )
 378                                 && $user->getOption( 'shownumberswatching' )
 379                         ) {
 380                                 $rc->numberofWatchingusers = $dbr->selectField( 'watchlist',
 381                                         'COUNT(*)',
 382                                         array(
 383                                                 'wl_namespace' => $obj->rc_namespace,
 384                                                 'wl_title' => $obj->rc_title,
 385                                         ),
 386                                         __METHOD__ );
 387                         } else {
 388                                 $rc->numberofWatchingusers = 0;
 389                         }
 390
 391                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 392                         if ( $changeLine !== false ) {
 393                                 $s .= $changeLine;
 394                         }
 395                 }
 396                 $s .= $list->endRecentChangesList();
 397
 398                 $output->addHTML( $s );
 399         }
 400
 401         /**
 402          * Set the text to be displayed above the changes
 403          *
 404          * @param FormOptions $opts
 405          * @param int $numRows Number of rows in the result to show after this header
 406          */
 407         public function doHeader( $opts, $numRows ) {
 408                 $user = $this->getUser();
 409                 $out = $this->getOutput();
 410
 411                 // if the user wishes, that the watchlist is reloaded, whenever a filter changes,
 412                 // add the module for that
 413                 if ( $user->getBoolOption( 'watchlistreloadautomatically' ) ) {
 414                         $out->addModules( array( 'mediawiki.special.watchlist' ) );
 415                 }
 416
 417                 $out->addSubtitle(
 418                         $this->msg( 'watchlistfor2', $user->getName() )
 419                                 ->rawParams( SpecialEditWatchlist::buildTools( null ) )
 420                 );
 421
 422                 $this->setTopText( $opts );
 423
 424                 $lang = $this->getLanguage();
 425                 if ( $opts['days'] > 0 ) {
 426                         $days = $opts['days'];
 427                 } else {
 428                         $days = $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 );
 429                 }
 430                 $timestamp = wfTimestampNow();
 431                 $wlInfo = $this->msg( 'wlnote' )->numParams( $numRows, round( $days * 24 ) )->params(
 432                         $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user )
 433                 )->parse() . "<br />\n";
 434
 435                 $nondefaults = $opts->getChangedValues();
 436                 $cutofflinks = $this->msg( 'wlshowtime' ) . ' ' . $this->cutoffselector( $opts );
 437
 438                 # Spit out some control panel links
 439                 $filters = array(
 440                         'hideminor' => 'wlshowhideminor',
 441                         'hidebots' => 'wlshowhidebots',
 442                         'hideanons' => 'wlshowhideanons',
 443                         'hideliu' => 'wlshowhideliu',
 444                         'hidemyself' => 'wlshowhidemine',
 445                         'hidepatrolled' => 'wlshowhidepatr'
 446                 );
 447
 448                 if ( $this->getConfig()->get( 'RCWatchCategoryMembership' ) ) {
 449                         $filters['hidecategorization'] = 'wlshowhidecategorization';
 450                 }
 451
 452                 foreach ( $this->getCustomFilters() as $key => $params ) {
 453                         $filters[$key] = $params['msg'];
 454                 }
 455                 // Disable some if needed
 456                 if ( !$user->useRCPatrol() ) {
 457                         unset( $filters['hidepatrolled'] );
 458                 }
 459
 460                 $links = array();
 461                 foreach ( $filters as $name => $msg ) {
 462                         $links[] = $this->showHideCheck( $nondefaults, $msg, $name, $opts[$name] );
 463                 }
 464
 465                 $hiddenFields = $nondefaults;
 466                 $hiddenFields['action'] = 'submit';
 467                 unset( $hiddenFields['namespace'] );
 468                 unset( $hiddenFields['invert'] );
 469                 unset( $hiddenFields['associated'] );
 470                 unset( $hiddenFields['days'] );
 471                 foreach ( $filters as $key => $value ) {
 472                         unset( $hiddenFields[$key] );
 473                 }
 474
 475                 # Create output
 476                 $form = '';
 477
 478                 # Namespace filter and put the whole form together.
 479                 $form .= $wlInfo;
 480                 $form .= $cutofflinks;
 481                 $form .= $this->msg( 'watchlist-hide' ) .
 482                         $this->msg( 'colon-separator' )->escaped() .
 483                         implode( ' ', $links );
 484                 $form .= "\n<br />\n";
 485                 $form .= Html::namespaceSelector(
 486                         array(
 487                                 'selected' => $opts['namespace'],
 488                                 'all' => '',
 489                                 'label' => $this->msg( 'namespace' )->text()
 490                         ), array(
 491                                 'name' => 'namespace',
 492                                 'id' => 'namespace',
 493                                 'class' => 'namespaceselector',
 494                         )
 495                 ) . "\n";
 496                 $form .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 497                         $this->msg( 'invert' )->text(),
 498                         'invert',
 499                         'nsinvert',
 500                         $opts['invert'],
 501                         array( 'title' => $this->msg( 'tooltip-invert' )->text() )
 502                 ) . "</span>\n";
 503                 $form .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 504                         $this->msg( 'namespace_association' )->text(),
 505                         'associated',
 506                         'nsassociated',
 507                         $opts['associated'],
 508                         array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
 509                 ) . "</span>\n";
 510                 $form .= Xml::submitButton( $this->msg( 'watchlist-submit' )->text() ) . "\n";
 511                 foreach ( $hiddenFields as $key => $value ) {
 512                         $form .= Html::hidden( $key, $value ) . "\n";
 513                 }
 514                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 515                 $form .= Xml::closeElement( 'form' ) . "\n";
 516                 $this->getOutput()->addHTML( $form );
 517
 518                 $this->setBottomText( $opts );
 519         }
 520
 521         function cutoffselector( $options ) {
 522                 // Cast everything to strings immediately, so that we know all of the values have the same
 523                 // precision, and can be compared with '==='. 2/24 has a few more decimal places than its
 524                 // default string representation, for example, and would confuse comparisons.
 525
 526                 // Misleadingly, the 'days' option supports hours too.
 527                 $days = array_map( 'strval', array( 1/24, 2/24, 6/24, 12/24, 1, 3, 7 ) );
 528
 529                 $userWatchlistOption = (string)$this->getUser()->getOption( 'watchlistdays' );
 530                 // add the user preference, if it isn't available already
 531                 if ( !in_array( $userWatchlistOption, $days ) && $userWatchlistOption !== '0' ) {
 532                         $days[] = $userWatchlistOption;
 533                 }
 534
 535                 $maxDays = (string)( $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 ) );
 536                 // add the maximum possible value, if it isn't available already
 537                 if ( !in_array( $maxDays, $days ) ) {
 538                         $days[] = $maxDays;
 539                 }
 540
 541                 $selected = (string)$options['days'];
 542                 if ( $selected <= 0 ) {
 543                         $selected = $maxDays;
 544                 }
 545
 546                 // add the currently selected value, if it isn't available already
 547                 if ( !in_array( $selected, $days ) ) {
 548                         $days[] = $selected;
 549                 }
 550
 551                 $select = new XmlSelect( 'days', 'days', $selected );
 552
 553                 asort( $days );
 554                 foreach ( $days as $value ) {
 555                         if ( $value < 1 ) {
 556                                 $name = $this->msg( 'hours' )->numParams( $value * 24 )->text();
 557                         } else {
 558                                 $name = $this->msg( 'days' )->numParams( $value )->text();
 559                         }
 560                         $select->addOption( $name, $value );
 561                 }
 562
 563                 return $select->getHTML() . "\n<br />\n";
 564         }
 565
 566         function setTopText( FormOptions $opts ) {
 567                 $nondefaults = $opts->getChangedValues();
 568                 $form = "";
 569                 $user = $this->getUser();
 570
 571                 $dbr = $this->getDB();
 572                 $numItems = $this->countItems( $dbr );
 573                 $showUpdatedMarker = $this->getConfig()->get( 'ShowUpdatedMarker' );
 574
 575                 // Show watchlist header
 576                 $form .= "<p>";
 577                 if ( $numItems == 0 ) {
 578                         $form .= $this->msg( 'nowatchlist' )->parse() . "\n";
 579                 } else {
 580                         $form .= $this->msg( 'watchlist-details' )->numParams( $numItems )->parse() . "\n";
 581                         if ( $this->getConfig()->get( 'EnotifWatchlist' )
 582                                 && $user->getOption( 'enotifwatchlistpages' )
 583                         ) {
 584                                 $form .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 585                         }
 586                         if ( $showUpdatedMarker ) {
 587                                 $form .= $this->msg( 'wlheader-showupdated' )->parse() . "\n";
 588                         }
 589                 }
 590                 $form .= "</p>";
 591
 592                 if ( $numItems > 0 && $showUpdatedMarker ) {
 593                         $form .= Xml::openElement( 'form', array( 'method' => 'post',
 594                                 'action' => $this->getPageTitle()->getLocalURL(),
 595                                 'id' => 'mw-watchlist-resetbutton' ) ) . "\n" .
 596                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(), array( 'name' => 'dummy' ) ) . "\n" .
 597                         Html::hidden( 'reset', 'all' ) . "\n";
 598                         foreach ( $nondefaults as $key => $value ) {
 599                                 $form .= Html::hidden( $key, $value ) . "\n";
 600                         }
 601                         $form .= Xml::closeElement( 'form' ) . "\n";
 602                 }
 603
 604                 $form .= Xml::openElement( 'form', array(
 605                         'method' => 'get',
 606                         'action' => $this->getPageTitle()->getLocalURL(),
 607                         'id' => 'mw-watchlist-form'
 608                 ) );
 609                 $form .= Xml::fieldset(
 610                         $this->msg( 'watchlist-options' )->text(),
 611                         false,
 612                         array( 'id' => 'mw-watchlist-options' )
 613                 );
 614
 615                 $form .= $this->makeLegend();
 616
 617                 $this->getOutput()->addHTML( $form );
 618         }
 619
 620         protected function showHideCheck( $options, $message, $name, $value ) {
 621                 $options[$name] = 1 - (int)$value;
 622
 623                 return '<span class="mw-input-with-label">' . Xml::checkLabel(
 624                         $this->msg( $message, '' )->text(),
 625                         $name,
 626                         $name,
 627                         (int)$value
 628                 ) . '</span>';
 629         }
 630
 631         /**
 632          * Count the number of items on a user's watchlist
 633          *
 634          * @param IDatabase $dbr A database connection
 635          * @return int
 636          */
 637         protected function countItems( $dbr ) {
 638                 # Fetch the raw count
 639                 $rows = $dbr->select( 'watchlist', array( 'count' => 'COUNT(*)' ),
 640                         array( 'wl_user' => $this->getUser()->getId() ), __METHOD__ );
 641                 $row = $dbr->fetchObject( $rows );
 642                 $count = $row->count;
 643
 644                 return floor( $count / 2 );
 645         }
 646 }