includes/SpecialWatchlist.php

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