includes/SpecialWatchlist.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'SpecialRecentchanges.php' );
  12
  13 /**
  14  * Constructor
  15  * @todo Document $par parameter.
  16  * @param $par String: FIXME
  17  */
  18 function wfSpecialWatchlist( $par ) {
  19         global $wgUser, $wgOut, $wgLang, $wgMemc, $wgRequest, $wgContLang;
  20         global $wgUseWatchlistCache, $wgWLCacheTimeout, $wgDBname;
  21         global $wgRCShowWatchingUsers, $wgEnotifWatchlist, $wgShowUpdatedMarker;
  22         global $wgEnotifWatchlist;
  23         $fname = 'wfSpecialWatchlist';
  24
  25         $skin =& $wgUser->getSkin();
  26         $specialTitle = Title::makeTitle( NS_SPECIAL, 'Watchlist' );
  27         $wgOut->setRobotPolicy( 'noindex,nofollow' );
  28
  29         # Anons don't get a watchlist
  30         if( $wgUser->isAnon() ) {
  31                 $wgOut->setPageTitle( wfMsg( 'watchnologin' ) );
  32                 $llink = $skin->makeKnownLinkObj( Title::makeTitle( NS_SPECIAL, 'Userlogin' ), wfMsgHtml( 'loginreqlink' ), 'returnto=' . $specialTitle->getPrefixedUrl() );
  33                 $wgOut->addHtml( wfMsgWikiHtml( 'watchlistanontext', $llink ) );
  34                 return;
  35         } else {
  36                 $wgOut->setPageTitle( wfMsg( 'watchlist' ) );
  37                 $wgOut->setSubtitle( wfMsgWikiHtml( 'watchlistfor', htmlspecialchars( $wgUser->getName() ) ) );
  38         }
  39
  40         if( wlHandleClear( $wgOut, $wgRequest, $par ) ) {
  41                 return;
  42         }
  43
  44         $defaults = array(
  45         /* float */ 'days' => floatval( $wgUser->getOption( 'watchlistdays' ) ), /* 3.0 or 0.5, watch further below */
  46         /* bool  */ 'hideOwn' => (int)$wgUser->getBoolOption( 'watchlisthideown' ),
  47         /* bool  */ 'hideBots' => (int)$wgUser->getBoolOption( 'watchlisthidebots' ),
  48         /* ?     */ 'namespace' => 'all',
  49         );
  50
  51         extract($defaults);
  52
  53         # Extract variables from the request, falling back to user preferences or
  54         # other default values if these don't exist
  55         $prefs['days'    ] = floatval( $wgUser->getOption( 'watchlistdays' ) );
  56         $prefs['hideown' ] = $wgUser->getBoolOption( 'watchlisthideown' );
  57         $prefs['hidebots'] = $wgUser->getBoolOption( 'watchlisthidebots' );
  58
  59         # Get query variables
  60         $days = $wgRequest->getVal( 'days', $prefs['days'] );
  61         $hideOwn = $wgRequest->getBool( 'hideOwn', $prefs['hideown'] );
  62         $hideBots = $wgRequest->getBool( 'hideBots', $prefs['hidebots'] );
  63
  64         # Get namespace value, if supplied, and prepare a WHERE fragment
  65         $nameSpace = $wgRequest->getIntOrNull( 'namespace' );
  66         if( !is_null( $nameSpace ) ) {
  67                 $nameSpace = intval( $nameSpace );
  68                 $nameSpaceClause = " AND rc_namespace = $nameSpace";
  69         } else {
  70                 $nameSpace = '';
  71                 $nameSpaceClause = '';
  72         }
  73
  74         # Watchlist editing
  75         $action = $wgRequest->getVal( 'action' );
  76         $remove = $wgRequest->getVal( 'remove' );
  77         $id = $wgRequest->getArray( 'id' );
  78
  79         $uid = $wgUser->getID();
  80         if( $wgEnotifWatchlist && $wgRequest->getVal( 'reset' ) && $wgRequest->wasPosted() ) {
  81                 $wgUser->clearAllNotifications( $uid );
  82         }
  83
  84   # Deleting items from watchlist
  85         if(($action == 'submit') && isset($remove) && is_array($id)) {
  86                 $wgOut->addWikiText( wfMsg( 'removingchecked' ) );
  87                 $wgOut->addHTML( '<p>' );
  88                 foreach($id as $one) {
  89                         $t = Title::newFromURL( $one );
  90                         if( !is_null( $t ) ) {
  91                                 $wl = WatchedItem::fromUserTitle( $wgUser, $t );
  92                                 if( $wl->removeWatch() === false ) {
  93                                         $wgOut->addHTML( "<br />\n" . wfMsg( 'couldntremove', htmlspecialchars($one) ) );
  94                                 } else {
  95                                         wfRunHooks('UnwatchArticle', array(&$wgUser, new Article($t)));
  96                                         $wgOut->addHTML( ' (' . htmlspecialchars($one) . ')' );
  97                                 }
  98                         } else {
  99                                 $wgOut->addHTML( "<br />\n" . wfMsg( 'iteminvalidname', htmlspecialchars($one) ) );
 100                         }
 101                 }
 102                 $wgOut->addHTML( "<br />\n" . wfMsg( 'wldone' ) . "</p>\n" );
 103         }
 104
 105         if ( $wgUseWatchlistCache ) {
 106                 $memckey = "$wgDBname:watchlist:id:" . $wgUser->getId();
 107                 $cache_s = @$wgMemc->get( $memckey );
 108                 if( $cache_s ){
 109                         $wgOut->addWikiText( wfMsg('wlsaved') );
 110                         $wgOut->addHTML( $cache_s );
 111                         return;
 112                 }
 113         }
 114
 115         $dbr =& wfGetDB( DB_SLAVE );
 116         extract( $dbr->tableNames( 'page', 'revision', 'watchlist', 'recentchanges' ) );
 117
 118         $sql = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_user=$uid";
 119         $res = $dbr->query( $sql, $fname );
 120         $s = $dbr->fetchObject( $res );
 121
 122 #       Patch *** A1 *** (see A2 below)
 123 #       adjust for page X, talk:page X, which are both stored separately, but treated together
 124         $nitems = floor($s->n / 2);
 125 #       $nitems = $s->n;
 126
 127         if($nitems == 0) {
 128                 $wgOut->addWikiText( wfMsg( 'nowatchlist' ) );
 129                 return;
 130         }
 131
 132         if( is_null($days) || !is_numeric($days) ) {
 133                 $big = 1000; /* The magical big */
 134                 if($nitems > $big) {
 135                         # Set default cutoff shorter
 136                         $days = $defaults['days'] = (12.0 / 24.0); # 12 hours...
 137                 } else {
 138                         $days = $defaults['days']; # default cutoff for shortlisters
 139                 }
 140         } else {
 141                 $days = floatval($days);
 142         }
 143
 144         // Dump everything here
 145         $nondefaults = array();
 146
 147         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 148         wfAppendToArrayIfNotDefault( 'hideOwn', (int)$hideOwn, $defaults, $nondefaults);
 149         wfAppendToArrayIfNotDefault( 'hideBots', (int)$hideBots, $defaults, $nondefaults);
 150         wfAppendToArrayIfNotDefault( 'namespace', $nameSpace, $defaults, $nondefaults );
 151
 152         if ( $days <= 0 ) {
 153                 $docutoff = '';
 154                 $cutoff = false;
 155                 $npages = wfMsg( 'watchlistall1' );
 156         } else {
 157                 $docutoff = "AND rev_timestamp > '" .
 158                   ( $cutoff = $dbr->timestamp( time() - intval( $days * 86400 ) ) )
 159                   . "'";
 160                   /*
 161                   $sql = "SELECT COUNT(*) AS n FROM $page, $revision  WHERE rev_timestamp>'$cutoff' AND page_id=rev_page";
 162                   $res = $dbr->query( $sql, $fname );
 163                   $s = $dbr->fetchObject( $res );
 164                   $npages = $s->n;
 165                   */
 166                   $npages = 40000 * $days;
 167
 168         }
 169
 170         /* Edit watchlist form */
 171         if($wgRequest->getBool('edit') || $par == 'edit' ) {
 172                 $wgOut->addWikiText( wfMsg( 'watchlistcontains', $wgLang->formatNum( $nitems ) ) .
 173                         "\n\n" . wfMsg( 'watcheditlist' ) );
 174
 175                 $wgOut->addHTML( '<form action=\'' .
 176                         $specialTitle->escapeLocalUrl( 'action=submit' ) .
 177                         "' method='post'>\n" );
 178
 179 #               Patch A2
 180 #               The following was proposed by KTurner 07.11.2004 to T.Gries
 181 #               $sql = "SELECT distinct (wl_namespace & ~1),wl_title FROM $watchlist WHERE wl_user=$uid";
 182                 $sql = "SELECT wl_namespace, wl_title, page_is_redirect FROM $watchlist LEFT JOIN $page ON wl_namespace = page_namespace AND wl_title = page_title WHERE wl_user=$uid";
 183
 184                 $res = $dbr->query( $sql, $fname );
 185
 186                 # Batch existence check
 187                 $linkBatch = new LinkBatch();
 188                 while( $row = $dbr->fetchObject( $res ) )
 189                         $linkBatch->addObj( Title::makeTitleSafe( $row->wl_namespace, $row->wl_title ) );
 190                 $linkBatch->execute();
 191                 if( $dbr->numRows( $res ) > 0 )
 192                         $dbr->dataSeek( $res, 0 ); # Let's do the time warp again!
 193
 194                 $sk = $wgUser->getSkin();
 195
 196                 $list = array();
 197                 while( $s = $dbr->fetchObject( $res ) ) {
 198                         $list[$s->wl_namespace][$s->wl_title] = $s->page_is_redirect;
 199                 }
 200
 201                 // TODO: Display a TOC
 202                 foreach($list as $ns => $titles) {
 203                         if (Namespace::isTalk($ns))
 204                                 continue;
 205                         if ($ns != NS_MAIN)
 206                                 $wgOut->addHTML( '<h2>' . $wgContLang->getFormattedNsText( $ns ) . '</h2>' );
 207                         $wgOut->addHTML( '<ul>' );
 208                         foreach( $titles as $title => $redir ) {
 209                                 $titleObj = Title::makeTitle( $ns, $title );
 210                                 if( is_null( $titleObj ) ) {
 211                                         $wgOut->addHTML(
 212                                                 '<!-- bad title "' .
 213                                                 htmlspecialchars( $s->wl_title ) . '" in namespace ' . $s->wl_namespace . " -->\n"
 214                                         );
 215                                 } else {
 216                                         global $wgContLang;
 217                                         $toolLinks = array();
 218                                         $titleText = $titleObj->getPrefixedText();
 219                                         $pageLink = $sk->makeLinkObj( $titleObj );
 220                                         $toolLinks[] = $sk->makeLinkObj( $titleObj->getTalkPage(), $wgLang->getNsText( NS_TALK ) );
 221                                         if( $titleObj->exists() )
 222                                                 $toolLinks[] = $sk->makeKnownLinkObj( $titleObj, wfMsgHtml( 'history_short' ), 'action=history' );
 223                                         $toolLinks = '(' . implode( ' | ', $toolLinks ) . ')';
 224                                         $checkbox = '<input type="checkbox" name="id[]" value="' . htmlspecialchars( $titleObj->getPrefixedText() ) . '" /> ' . ( $wgContLang->isRTL() ? '&rlm;' : '&lrm;' );
 225                                         if( $redir ) {
 226                                                 $spanopen = '<span class="watchlistredir">';
 227                                                 $spanclosed = '</span>';
 228                                         } else {
 229                                                 $spanopen = $spanclosed = '';
 230                                         }
 231
 232                                         $wgOut->addHTML( "<li>{$checkbox}{$spanopen}{$pageLink}{$spanclosed} {$toolLinks}</li>\n" );
 233                                 }
 234                         }
 235                         $wgOut->addHTML( '</ul>' );
 236                 }
 237                 $wgOut->addHTML(
 238                         wfSubmitButton( wfMsg('removechecked'), array('name' => 'remove') ) .
 239                         "\n</form>\n"
 240                 );
 241
 242                 return;
 243         }
 244
 245         # If the watchlist is relatively short, it's simplest to zip
 246         # down its entirety and then sort the results.
 247
 248         # If it's relatively long, it may be worth our while to zip
 249         # through the time-sorted page list checking for watched items.
 250
 251         # Up estimate of watched items by 15% to compensate for talk pages...
 252
 253         # Toggles
 254         $andHideOwn = $hideOwn ? "AND (rc_user <> $uid)" : '';
 255         $andHideBots = $hideBots ? "AND (rc_bot = 0)" : '';
 256
 257         # Show watchlist header
 258         $header = '';
 259         if( $wgUser->getOption( 'enotifwatchlistpages' ) && $wgEnotifWatchlist) {
 260                 $header .= wfMsg( 'wlheader-enotif' ) . "\n";
 261         }
 262         if ( $wgEnotifWatchlist && $wgShowUpdatedMarker ) {
 263                 $header .= wfMsg( 'wlheader-showupdated' ) . "\n";
 264         }
 265
 266   # Toggle watchlist content (all recent edits or just the latest)
 267         if( $wgUser->getOption( 'extendwatchlist' )) {
 268                 $andLatest='';
 269                 $limitWatchlist = 'LIMIT ' . intval( $wgUser->getOption( 'wllimit' ) );
 270         } else {
 271                 $andLatest= 'AND rc_this_oldid=page_latest';
 272                 $limitWatchlist = '';
 273         }
 274
 275         # TODO: Consider removing the third parameter
 276         $header .= wfMsg( 'watchdetails', $wgLang->formatNum( $nitems ),
 277                 $wgLang->formatNum( $npages ), '',
 278                 $specialTitle->getFullUrl( 'edit=yes' ) );
 279         $wgOut->addWikiText( $header );
 280
 281         if ( $wgEnotifWatchlist && $wgShowUpdatedMarker ) {
 282                 $wgOut->addHTML( '<form action="' .
 283                         $specialTitle->escapeLocalUrl() .
 284                         '" method="post"><input type="submit" name="dummy" value="' .
 285                         htmlspecialchars( wfMsg( 'enotif_reset' ) ) .
 286                         '" /><input type="hidden" name="reset" value="all" /></form>' .
 287                         "\n\n" );
 288         }
 289
 290         $sql = "SELECT
 291           rc_namespace AS page_namespace, rc_title AS page_title,
 292           rc_comment AS rev_comment, rc_cur_id AS page_id,
 293           rc_user AS rev_user, rc_user_text AS rev_user_text,
 294           rc_timestamp AS rev_timestamp, rc_minor AS rev_minor_edit,
 295           rc_this_oldid AS rev_id,
 296           rc_last_oldid, rc_id, rc_patrolled,
 297           rc_new AS page_is_new,wl_notificationtimestamp
 298           FROM $watchlist,$recentchanges,$page
 299           WHERE wl_user=$uid
 300           AND wl_namespace=rc_namespace
 301           AND wl_title=rc_title
 302           AND rc_timestamp > '$cutoff'
 303           AND rc_cur_id=page_id
 304           $andLatest
 305           $andHideOwn
 306           $andHideBots
 307           $nameSpaceClause
 308           ORDER BY rc_timestamp DESC
 309           $limitWatchlist";
 310
 311         $res = $dbr->query( $sql, $fname );
 312         $numRows = $dbr->numRows( $res );
 313
 314         /* Start bottom header */
 315         $wgOut->addHTML( "<hr />\n" );
 316
 317         if($days >= 1) {
 318                 $wgOut->addWikiText( wfMsg( 'rcnote', $wgLang->formatNum( $numRows ),
 319                         $wgLang->formatNum( $days ), $wgLang->timeAndDate( wfTimestampNow(), true ) ) . '<br />' , false );
 320         } elseif($days > 0) {
 321                 $wgOut->addWikiText( wfMsg( 'wlnote', $wgLang->formatNum( $numRows ),
 322                         $wgLang->formatNum( round($days*24) ) ) . '<br />' , false );
 323         }
 324
 325         $wgOut->addHTML( "\n" . wlCutoffLinks( $days, 'Watchlist', $nondefaults ) . "<br />\n" );
 326
 327         # Spit out some control panel links
 328         $thisTitle = Title::makeTitle( NS_SPECIAL, 'Watchlist' );
 329         $skin = $wgUser->getSkin();
 330         $linkElements = array( 'hideOwn' => 'wlhideshowown', 'hideBots' => 'wlhideshowbots' );
 331
 332         # Problems encountered using the fancier method
 333         $label = $hideBots ? wfMsgHtml( 'show' ) : wfMsgHtml( 'hide' );
 334         $linkBits = wfArrayToCGI( array( 'hideBots' => 1 - (int)$hideBots ), $nondefaults );
 335         $link = $skin->makeKnownLinkObj( $thisTitle, $label, $linkBits );
 336         $links[] = wfMsgHtml( 'wlhideshowbots', $link );
 337
 338         $label = $hideOwn ? wfMsgHtml( 'show' ) : wfMsgHtml( 'hide' );
 339         $linkBits = wfArrayToCGI( array( 'hideOwn' => 1 - (int)$hideOwn ), $nondefaults );
 340         $link = $skin->makeKnownLinkObj( $thisTitle, $label, $linkBits );
 341         $links[] = wfMsgHtml( 'wlhideshowown', $link );
 342
 343         $wgOut->addHTML( implode( ' | ', $links ) );
 344
 345         # Form for namespace filtering
 346         $wgOut->addHTML( "\n" .
 347                 wfOpenElement( 'form', array(
 348                                 'method' => 'post',
 349                                 'action' => $thisTitle->getLocalURL(),
 350                         ) ) .
 351                 wfMsgExt( 'namespace', array( 'parseinline') ) .
 352                 HTMLnamespaceselector( $nameSpace, '' ) . "\n" .
 353                 ( $hideOwn ? wfHidden('hideown', 1)."\n" : '' ) .
 354                 ( $hideBots ? wfHidden('hidebots', 1)."\n" : '' ) .
 355                 wfHidden( 'days', $days ) . "\n" .
 356                 wfSubmitButton( wfMsgExt( 'allpagessubmit', array( 'escape') ) ) . "\n" .
 357                 wfCloseElement( 'form' ) . "\n"
 358         );
 359
 360         if ( $numRows == 0 ) {
 361                 $wgOut->addWikitext( "<br />" . wfMsg( 'watchnochange' ), false );
 362                 return;
 363         }
 364
 365         /* End bottom header */
 366
 367         $list = ChangesList::newFromUser( $wgUser );
 368
 369         $s = $list->beginRecentChangesList();
 370         $counter = 1;
 371         while ( $obj = $dbr->fetchObject( $res ) ) {
 372                 # Make fake RC entry
 373                 $rc = RecentChange::newFromCurRow( $obj, $obj->rc_last_oldid );
 374                 $rc->counter = $counter++;
 375
 376                 if ( $wgShowUpdatedMarker ) {
 377                         $updated = $obj->wl_notificationtimestamp;
 378                 } else {
 379                         // Same visual appearance as MW 1.4
 380                         $updated = true;
 381                 }
 382
 383                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 384                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" .wfStrencode($obj->page_title). "' AND wl_namespace='{$obj->page_namespace}'" ;
 385                         $res3 = $dbr->query( $sql3, DB_READ, $fname );
 386                         $x = $dbr->fetchObject( $res3 );
 387                         $rc->numberofWatchingusers = $x->n;
 388                 } else {
 389                         $rc->numberofWatchingusers = 0;
 390                 }
 391
 392                 $s .= $list->recentChangesLine( $rc, $updated );
 393         }
 394         $s .= $list->endRecentChangesList();
 395
 396         $dbr->freeResult( $res );
 397         $wgOut->addHTML( $s );
 398
 399         if ( $wgUseWatchlistCache ) {
 400                 $wgMemc->set( $memckey, $s, $wgWLCacheTimeout);
 401         }
 402
 403 }
 404
 405 function wlHoursLink( $h, $page, $options = array() ) {
 406         global $wgUser, $wgLang, $wgContLang;
 407         $sk = $wgUser->getSkin();
 408         $s = $sk->makeKnownLink(
 409           $wgContLang->specialPage( $page ),
 410           $wgLang->formatNum( $h ),
 411           wfArrayToCGI( array('days' => ($h / 24.0)), $options ) );
 412         return $s;
 413 }
 414
 415 function wlDaysLink( $d, $page, $options = array() ) {
 416         global $wgUser, $wgLang, $wgContLang;
 417         $sk = $wgUser->getSkin();
 418         $s = $sk->makeKnownLink(
 419           $wgContLang->specialPage( $page ),
 420           ($d ? $wgLang->formatNum( $d ) : wfMsgHtml( 'watchlistall2' ) ),
 421           wfArrayToCGI( array('days' => $d), $options ) );
 422         return $s;
 423 }
 424
 425 /**
 426  * Returns html
 427  */
 428 function wlCutoffLinks( $days, $page = 'Watchlist', $options = array() ) {
 429         $hours = array( 1, 2, 6, 12 );
 430         $days = array( 1, 3, 7 );
 431         $cl = '';
 432         $i = 0;
 433         foreach( $hours as $h ) {
 434                 $hours[$i++] = wlHoursLink( $h, $page, $options );
 435         }
 436         $i = 0;
 437         foreach( $days as $d ) {
 438                 $days[$i++] = wlDaysLink( $d, $page, $options );
 439         }
 440         return wfMsgExt('wlshowlast',
 441                 array('parseinline', 'replaceafter'),
 442                 implode(' | ', $hours),
 443                 implode(' | ', $days),
 444                 wlDaysLink( 0, $page, $options ) );
 445 }
 446
 447 /**
 448  * Count the number of items on a user's watchlist
 449  *
 450  * @param $talk Include talk pages
 451  * @return integer
 452  */
 453 function wlCountItems( &$user, $talk = true ) {
 454         $dbr =& wfGetDB( DB_SLAVE );
 455
 456         # Fetch the raw count
 457         $res = $dbr->select( 'watchlist', 'COUNT(*) AS count', array( 'wl_user' => $user->mId ), 'wlCountItems' );
 458         $row = $dbr->fetchObject( $res );
 459         $count = $row->count;
 460         $dbr->freeResult( $res );
 461
 462         # Halve to remove talk pages if needed
 463         if( !$talk )
 464                 $count = floor( $count / 2 );
 465
 466         return( $count );
 467 }
 468
 469 /**
 470  * Allow the user to clear their watchlist
 471  *
 472  * @param $out Output object
 473  * @param $request Request object
 474  * @param $par Parameters passed to the watchlist page
 475  * @return bool True if it's been taken care of; false indicates the watchlist
 476  *                              code needs to do something further
 477  */
 478 function wlHandleClear( &$out, &$request, $par ) {
 479         # Check this function has something to do
 480         if( $request->getText( 'action' ) == 'clear' || $par == 'clear' ) {
 481                 global $wgUser;
 482                 $out->setPageTitle( wfMsgHtml( 'clearwatchlist' ) );
 483                 $count = wlCountItems( $wgUser );
 484                 if( $count > 0 ) {
 485                         # See if we're clearing or confirming
 486                         if( $request->wasPosted() && $wgUser->matchEditToken( $request->getText( 'token' ), 'clearwatchlist' ) ) {
 487                                 # Clearing, so do it and report the result
 488                                 $dbw =& wfGetDB( DB_MASTER );
 489                                 $dbw->delete( 'watchlist', array( 'wl_user' => $wgUser->mId ), 'wlHandleClear' );
 490                                 $out->addWikiText( wfMsg( 'watchlistcleardone', $count ) );
 491                                 $out->returnToMain();
 492                         } else {
 493                                 # Confirming, so show a form
 494                                 $wlTitle = Title::makeTitle( NS_SPECIAL, 'Watchlist' );
 495                                 $out->addHTML( wfElement( 'form', array( 'method' => 'post', 'action' => $wlTitle->getLocalUrl( 'action=clear' ) ), NULL ) );
 496                                 $out->addWikiText( wfMsg( 'watchlistcount', $count ) );
 497                                 $out->addWikiText( wfMsg( 'watchlistcleartext' ) );
 498                                 $out->addHTML(
 499                                         wfHidden( 'token', $wgUser->editToken( 'clearwatchlist' ) ) .
 500                                         wfElement( 'input', array( 'type' => 'submit', 'name' => 'submit', 'value' => wfMsgHtml( 'watchlistclearbutton' ) ), '' ) .
 501                                         wfCloseElement( 'form' )
 502                                 );
 503                         }
 504                         return( true );
 505                 } else {
 506                         # Nothing on the watchlist; nothing to do here
 507                         $out->addWikiText( wfMsg( 'nowatchlist' ) );
 508                         $out->returnToMain();
 509                         return( true );
 510                 }
 511         } else {
 512                 return( false );
 513         }
 514 }
 515 ?>