includes/LogEventList.php

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>, 2008 Aaron Schulz
   3 # http://www.mediawiki.org/
   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 class LogEventList {
  21         const NO_ACTION_LINK = 1;
  22
  23         function __construct( &$skin, $flags = 0 ) {
  24                 $this->skin =& $skin;
  25                 $this->flags = $flags;
  26                 $this->preCacheMessages();
  27         }
  28
  29         /**
  30          * As we use the same small set of messages in various methods and that
  31          * they are called often, we call them once and save them in $this->message
  32          */
  33         private function preCacheMessages() {
  34                 // Precache various messages
  35                 if( !isset( $this->message ) ) {
  36                         foreach( explode(' ', 'viewpagelogs revhistory filehist rev-delundel' ) as $msg ) {
  37                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
  38                         }
  39                 }
  40         }
  41
  42         /**
  43          * Set page title and show header for this log type
  44          * @param OutputPage $out where to send output
  45          * @param strin $type
  46          */
  47         public function showHeader( $out, $type ) {
  48                 if( LogPage::isLogType( $type ) ) {
  49                         $out->setPageTitle( LogPage::logName( $type ) );
  50                         $out->addWikiText( LogPage::logHeader( $type ) );
  51                 }
  52         }
  53
  54         /**
  55          * Show options for the log list
  56          * @param OutputPage $out where to send output
  57          * @param string $type,
  58          * @param string $user,
  59          * @param string $page,
  60          * @param string $pattern
  61          */
  62         public function showOptions( $out, $type, $user, $page, $pattern ) {
  63                 global $wgScript, $wgMiserMode;
  64                 $action = htmlspecialchars( $wgScript );
  65                 $title = SpecialPage::getTitleFor( 'Log' );
  66                 $special = htmlspecialchars( $title->getPrefixedDBkey() );
  67                 $out->addHTML( "<form action=\"$action\" method=\"get\"><fieldset>" .
  68                         Xml::element( 'legend', array(), wfMsg( 'log' ) ) .
  69                         Xml::hidden( 'title', $special ) . "\n" .
  70                         $this->getTypeMenu( $type ) . "\n" .
  71                         $this->getUserInput( $user ) . "\n" .
  72                         $this->getTitleInput( $page ) . "\n" .
  73                         ( !$wgMiserMode ? ($this->getTitlePattern( $pattern )."\n") : "" ) .
  74                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "\n" .
  75                         "</fieldset></form>" );
  76         }
  77
  78         /**
  79          * @return string Formatted HTML
  80          */
  81         private function getTypeMenu( $queryType ) {
  82                 global $wgLogRestrictions, $wgUser;
  83
  84                 $out = "<select name='type'>\n";
  85
  86                 $validTypes = LogPage::validTypes();
  87                 $m = array(); // Temporary array
  88
  89                 // First pass to load the log names
  90                 foreach( $validTypes as $type ) {
  91                         $text = LogPage::logName( $type );
  92                         $m[$text] = $type;
  93                 }
  94
  95                 // Second pass to sort by name
  96                 ksort($m);
  97
  98                 // Third pass generates sorted XHTML content
  99                 foreach( $m as $text => $type ) {
 100                         $selected = ($type == $queryType);
 101                         // Restricted types
 102                         if ( isset($wgLogRestrictions[$type]) ) {
 103                                 if ( $wgUser->isAllowed( $wgLogRestrictions[$type] ) ) {
 104                                         $out .= Xml::option( $text, $type, $selected ) . "\n";
 105                                 }
 106                         } else {
 107                                 $out .= Xml::option( $text, $type, $selected ) . "\n";
 108                         }
 109                 }
 110
 111                 $out .= '</select>';
 112                 return $out;
 113         }
 114
 115         /**
 116          * @return string Formatted HTML
 117          */
 118         private function getUserInput( $user ) {
 119                 return Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'user', 12, $user );
 120         }
 121
 122         /**
 123          * @return string Formatted HTML
 124          */
 125         private function getTitleInput( $title ) {
 126                 return Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'page', 20, $title );
 127         }
 128
 129         /**
 130          * @return boolean Checkbox
 131          */
 132         private function getTitlePattern( $pattern ) {
 133                 return Xml::checkLabel( wfMsg( 'log-title-wildcard' ), 'pattern', 'pattern', $pattern );
 134         }
 135
 136                 /**
 137          * @param Row $row a single row from the result set
 138          * @return string Formatted HTML list item
 139          * @private
 140          */
 141         public function logLine( $row ) {
 142                 global $wgLang, $wgUser, $wgContLang;
 143                 $skin = $wgUser->getSkin();
 144                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 145                 $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
 146                 // Enter the existence or non-existence of this page into the link cache,
 147                 // for faster makeLinkObj() in LogPage::actionText()
 148                 $linkCache =& LinkCache::singleton();
 149                 $linkCache->addLinkObj( $title );
 150                 // User links
 151                 if( LogPage::isDeleted($row,LogPage::DELETED_USER) ) {
 152                         $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 153                 } else {
 154                         $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
 155                                 $this->skin->userToolLinksRedContribs( $row->log_user, $row->user_name );
 156                 }
 157                 // Comment
 158                 if( $row->log_action == 'create2' ) {
 159                         $comment = ''; // Suppress from old account creations, useless and can contain incorrect links
 160                 } else if( LogPage::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 161                         $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 162                 } else {
 163                         $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 164                 }
 165                 // Extract extra parameters
 166                 $paramArray = LogPage::extractParams( $row->log_params );
 167                 $revert = $del = '';
 168                 // Some user can hide log items and have review links
 169                 if( $wgUser->isAllowed( 'deleterevision' ) ) {
 170                         $del = $this->showhideLinks( $row ) . ' ';
 171                 }
 172                 // Add review links and such...
 173                 if( !($this->flags & self::NO_ACTION_LINK) && !($row->log_deleted & LogPage::DELETED_ACTION) ) {
 174                         if( $row->log_type == 'move' && isset( $paramArray[0] ) && $wgUser->isAllowed( 'move' ) ) {
 175                                 $destTitle = Title::newFromText( $paramArray[0] );
 176                                 if( $destTitle ) {
 177                                         $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
 178                                                 wfMsg( 'revertmove' ),
 179                                                 'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
 180                                                 '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
 181                                                 '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
 182                                                 '&wpMovetalk=0' ) . ')';
 183                                 }
 184                         // Show undelete link
 185                         } else if( $row->log_action == 'delete' && $wgUser->isAllowed( 'delete' ) ) {
 186                                 $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
 187                                         wfMsg( 'undeletelink' ) ,
 188                                         'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
 189                         // Show unblock link
 190                         } else if( $row->log_action == 'block' && $wgUser->isAllowed( 'block' ) ) {
 191                                 $revert = '(' .  $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Ipblocklist' ),
 192                                         wfMsg( 'unblocklink' ),
 193                                         'action=unblock&ip=' . urlencode( $row->log_title ) ) . ')';
 194                         // Show change protection link
 195                         } else if( ( $row->log_action == 'protect' || $row->log_action == 'modify' ) && $wgUser->isAllowed( 'protect' ) ) {
 196                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $title, wfMsg( 'protect_change' ), 'action=unprotect' ) . ')';
 197                         // Show unmerge link
 198                         } else if ( $row->log_action == 'merge' ) {
 199                                 $merge = SpecialPage::getTitleFor( 'Mergehistory' );
 200                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, wfMsg('revertmerge'),
 201                                         wfArrayToCGI(
 202                                                 array('target' => $paramArray[0], 'dest' => $title->getPrefixedText(), 'mergepoint' => $paramArray[1] )
 203                                         )
 204                                 ) . ')';
 205                         // If an edit was hidden from a page give a review link to the history
 206                         } else if( $row->log_action == 'revision' && $wgUser->isAllowed( 'deleterevision' ) ) {
 207                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 208                                 // Different revision types use different URL params...
 209                                 $subtype = isset($paramArray[2]) ? $paramArray[1] : '';
 210                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 211                                 $Ids = explode( ',', $paramArray[2] );
 212                                 if( count($Ids) == 1 ) {
 213                                         $revert = $this->skin->makeKnownLinkObj( $revdel, wfMsgHtml('revdel-restore'),
 214                                                 wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $Ids[0] ) ) );
 215                                 } else {
 216                                         $revert .= wfMsgHtml('revdel-restore').':';
 217                                         foreach( $Ids as $n => $id ) {
 218                                                 $revert .= ' '.$this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 219                                                         wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $id ) ) );
 220                                         }
 221                                 }
 222                                 $revert = "($revert)";
 223                         // Hidden log items, give review link
 224                         } else if( $row->log_action == 'event' && $wgUser->isAllowed( 'deleterevision' ) ) {
 225                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 226                                 $revert .= wfMsgHtml('revdel-restore');
 227                                 $Ids = explode( ',', $paramArray[0] );
 228                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 229                                 if( count($Ids) == 1 ) {
 230                                         $revert = $this->skin->makeKnownLinkObj( $revdel, wfMsgHtml('revdel-restore'),
 231                                                 wfArrayToCGI( array('logid' => $Ids[0] ) ) );
 232                                 } else {
 233                                         foreach( $Ids as $n => $id ) {
 234                                                 $revert .= $this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 235                                                         wfArrayToCGI( array('logid' => $id ) ) );
 236                                         }
 237                                 }
 238                                 $revert = "($revert)";
 239                         } else {
 240                                 wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
 241                                         &$comment, &$revert, $row->log_timestamp ) );
 242                                 // wfDebug( "Invoked LogLine hook for " $row->log_type . ", " . $row->log_action . "\n" );
 243                                 // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
 244                         }
 245                 }
 246                 // Event description
 247                 if( $row->log_deleted & LogPage::DELETED_ACTION ) {
 248                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 249                 } else {
 250                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title, $this->skin, $paramArray, true );
 251                 }
 252
 253                 return "<li>$del$time $userLink $action $comment $revert</li>";
 254         }
 255
 256         /**
 257          * @param Row $row
 258          * @private
 259          */
 260         private function showhideLinks( $row ) {
 261                 global $wgAllowLogDeletion;
 262
 263                 if( !$wgAllowLogDeletion )
 264                         return "";
 265
 266                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 267                 // If event was hidden from sysops
 268                 if( !LogPage::userCan( $row, Revision::DELETED_RESTRICTED ) ) {
 269                         $del = $this->message['rev-delundel'];
 270                 } else if( $row->log_type == 'suppress' ) {
 271                         return ''; // No one should be hiding from the oversight log
 272                 } else {
 273                         $del = $this->skin->makeKnownLinkObj( $revdel, $this->message['rev-delundel'], 'logid='.$row->log_id );
 274                         // Bolden oversighted content
 275                         if( LogPage::isDeleted( $row, Revision::DELETED_RESTRICTED ) )
 276                                 $del = "<strong>$del</strong>";
 277                 }
 278                 return "<tt>(<small>$del</small>)</tt>";
 279         }
 280 }
 281
 282
 283 /**
 284  *
 285  * @addtogroup SpecialPage
 286  */
 287 class LogReader {
 288         const NO_ACTION_LINK = 1;
 289
 290         var $db, $joinClauses, $whereClauses;
 291         var $type = '', $user = '', $title = null, $pattern = false;
 292
 293         /**
 294          * @param WebRequest $request For internal use use a FauxRequest object to pass arbitrary parameters.
 295          */
 296         function LogReader( $request ) {
 297                 $this->db = wfGetDB( DB_SLAVE );
 298                 $this->setupQuery( $request );
 299         }
 300
 301         /**
 302          * Basic setup and applies the limiting factors from the WebRequest object.
 303          * @param WebRequest $request
 304          * @private
 305          */
 306         function setupQuery( $request ) {
 307                 $page = $this->db->tableName( 'page' );
 308                 $user = $this->db->tableName( 'user' );
 309                 $this->joinClauses = array(
 310                         "LEFT OUTER JOIN $page ON log_namespace=page_namespace AND log_title=page_title",
 311                         "INNER JOIN $user ON user_id=log_user" );
 312                 $this->whereClauses = array();
 313
 314                 $this->limitType( $request->getVal( 'type' ) );
 315                 $this->limitUser( $request->getText( 'user' ) );
 316                 $this->limitTitle( $request->getText( 'page' ) , $request->getBool( 'pattern' ) );
 317                 $this->limitTime( $request->getVal( 'from' ), '>=' );
 318                 $this->limitTime( $request->getVal( 'until' ), '<=' );
 319
 320                 list( $this->limit, $this->offset ) = $request->getLimitOffset();
 321
 322                 // XXX This all needs to use Pager, ugly hack for now.
 323                 global $wgMiserMode;
 324                 if( $wgMiserMode )
 325                         $this->offset = min( $this->offset, 10000 );
 326         }
 327
 328         /**
 329          * Set the log reader to return only entries of the given type.
 330          * Type restrictions enforced here
 331          * @param string $type A log type ('upload', 'delete', etc)
 332          * @private
 333          */
 334         function limitType( $type ) {
 335                 global $wgLogRestrictions, $wgUser;
 336                 // Reset the array, clears extra "where" clauses when $par is used
 337                 $this->whereClauses = $hiddenLogs = array();
 338                 // Nothing to show the user requested a log they can't see
 339                 if( isset($wgLogRestrictions[$type]) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
 340                         $this->whereClauses[] = "1 = 0";
 341                         return false;
 342                 }
 343                 // Don't show private logs to unpriviledged users
 344                 foreach( $wgLogRestrictions as $logtype => $right ) {
 345                         if( !$wgUser->isAllowed($right) || empty($type) ) {
 346                                 $safetype = $this->db->strencode( $logtype );
 347                                 $hiddenLogs[] = "'$safetype'";
 348                         }
 349                 }
 350                 if( !empty($hiddenLogs) ) {
 351                         $this->whereClauses[] = 'log_type NOT IN('.implode(',',$hiddenLogs).')';
 352                 }
 353
 354                 if( empty($type) ) {
 355                         return false;
 356                 }
 357                 $this->type = $type;
 358                 $safetype = $this->db->strencode( $type );
 359                 $this->whereClauses[] = "log_type='$safetype'";
 360         }
 361
 362         /**
 363          * Set the log reader to return only entries by the given user.
 364          * @param string $name (In)valid user name
 365          * @private
 366          */
 367         function limitUser( $name ) {
 368                 if ( $name == '' )
 369                         return false;
 370                 $usertitle = Title::makeTitleSafe( NS_USER, $name );
 371                 if ( is_null( $usertitle ) )
 372                         return false;
 373                 $this->user = $usertitle->getText();
 374
 375                 /* Fetch userid at first, if known, provides awesome query plan afterwards */
 376                 $userid = $this->db->selectField('user','user_id',array('user_name'=>$this->user));
 377                 if (!$userid)
 378                         /* It should be nicer to abort query at all,
 379                            but for now it won't pass anywhere behind the optimizer */
 380                         $this->whereClauses[] = "NULL";
 381                 else
 382                         $this->whereClauses[] = "log_user=$userid";
 383         }
 384
 385         /**
 386          * Set the log reader to return only entries affecting the given page.
 387          * (For the block and rights logs, this is a user page.)
 388          * @param string $page Title name as text
 389          * @private
 390          */
 391         function limitTitle( $page , $pattern ) {
 392                 global $wgMiserMode;
 393
 394                 $title = Title::newFromText( $page );
 395
 396                 if( strlen( $page ) == 0 || !$title instanceof Title )
 397                         return false;
 398
 399                 $this->title =& $title;
 400                 $this->pattern = $pattern;
 401                 $ns = $title->getNamespace();
 402                 if ( $pattern && !$wgMiserMode ) {
 403                         $safetitle = $this->db->escapeLike( $title->getDBkey() ); // use escapeLike to avoid expensive search patterns like 't%st%'
 404                         $this->whereClauses[] = "log_namespace=$ns AND log_title LIKE '$safetitle%'";
 405                 } else {
 406                         $safetitle = $this->db->strencode( $title->getDBkey() );
 407                         $this->whereClauses[] = "log_namespace=$ns AND log_title = '$safetitle'";
 408                 }
 409         }
 410
 411         /**
 412          * Set the log reader to return only entries in a given time range.
 413          * @param string $time Timestamp of one endpoint
 414          * @param string $direction either ">=" or "<=" operators
 415          * @private
 416          */
 417         function limitTime( $time, $direction ) {
 418                 # Direction should be a comparison operator
 419                 if( empty( $time ) ) {
 420                         return false;
 421                 }
 422                 $safetime = $this->db->strencode( wfTimestamp( TS_MW, $time ) );
 423                 $this->whereClauses[] = "log_timestamp $direction '$safetime'";
 424         }
 425
 426         /**
 427          * Build an SQL query from all the set parameters.
 428          * @return string the SQL query
 429          * @private
 430          */
 431         function getQuery() {
 432                 global $wgAllowLogDeletion;
 433
 434                 $logging = $this->db->tableName( "logging" );
 435                 $sql = "SELECT /*! STRAIGHT_JOIN */ log_type, log_action, log_timestamp,
 436                         log_user, user_name, log_namespace, log_title, page_id,
 437                         log_comment, log_params, log_deleted ";
 438                 if( $wgAllowLogDeletion )
 439                         $sql .= ", log_id ";
 440
 441                 $sql .= "FROM $logging ";
 442                 if( !empty( $this->joinClauses ) ) {
 443                         $sql .= implode( ' ', $this->joinClauses );
 444                 }
 445                 if( !empty( $this->whereClauses ) ) {
 446                         $sql .= " WHERE " . implode( ' AND ', $this->whereClauses );
 447                 }
 448                 $sql .= " ORDER BY log_timestamp DESC ";
 449                 $sql = $this->db->limitResult($sql, $this->limit, $this->offset );
 450                 return $sql;
 451         }
 452
 453         /**
 454          * Execute the query and start returning results.
 455          * @return ResultWrapper result object to return the relevant rows
 456          */
 457         function getRows() {
 458                 $res = $this->db->query( $this->getQuery(), __METHOD__ );
 459                 return $this->db->resultObject( $res );
 460         }
 461
 462         /**
 463          * @return string The query type that this LogReader has been limited to.
 464          */
 465         function queryType() {
 466                 return $this->type;
 467         }
 468
 469         /**
 470          * @return string The username type that this LogReader has been limited to, if any.
 471          */
 472         function queryUser() {
 473                 return $this->user;
 474         }
 475
 476         /**
 477          * @return boolean The checkbox, if titles should be searched by a pattern too
 478          */
 479         function queryPattern() {
 480                 return $this->pattern;
 481         }
 482
 483         /**
 484          * @return string The text of the title that this LogReader has been limited to.
 485          */
 486         function queryTitle() {
 487                 if( is_null( $this->title ) ) {
 488                         return '';
 489                 } else {
 490                         return $this->title->getPrefixedText();
 491                 }
 492         }
 493
 494         /**
 495          * Is there at least one row?
 496          *
 497          * @return bool
 498          */
 499         public function hasRows() {
 500                 # Little hack...
 501                 $limit = $this->limit;
 502                 $this->limit = 1;
 503                 $res = $this->db->query( $this->getQuery() );
 504                 $this->limit = $limit;
 505                 $ret = $this->db->numRows( $res ) > 0;
 506                 $this->db->freeResult( $res );
 507                 return $ret;
 508         }
 509
 510 }
 511
 512 /**
 513  *
 514  * @addtogroup SpecialPage
 515  */
 516 class LogViewer {
 517         /**
 518          * @var LogReader $reader
 519          */
 520         var $reader;
 521         var $numResults = 0;
 522         var $flags = 0;
 523
 524         /**
 525          * @param LogReader &$reader where to get our data from
 526          * @param integer $flags Bitwise combination of flags:
 527          *     LogEventList::NO_ACTION_LINK   Don't show restore/unblock/block links
 528          */
 529         function LogViewer( &$reader, $flags = 0 ) {
 530                 global $wgUser;
 531                 $this->skin = $wgUser->getSkin();
 532                 $this->reader =& $reader;
 533                 $this->flags = $flags;
 534                 $this->logList = new LogEventList( $wgUser->getSkin(), $flags );
 535         }
 536
 537         /**
 538          * Take over the whole output page in $wgOut with the log display.
 539          */
 540         function show() {
 541                 global $wgOut;
 542                 $this->logList->showHeader( $wgOut, $this->reader->queryType() );
 543                 $this->logList->showOptions( $wgOut, $this->reader->queryType(), $this->reader->queryUser(),
 544                         $this->reader->queryTitle(), $this->reader->queryPattern() );
 545                 $result = $this->getLogRows();
 546                 if ( $this->numResults > 0 ) {
 547                         $this->showPrevNext( $wgOut );
 548                         $this->doShowList( $wgOut, $result );
 549                         $this->showPrevNext( $wgOut );
 550                 } else {
 551                         $this->showError( $wgOut );
 552                 }
 553         }
 554
 555         /**
 556          * Load the data from the linked LogReader
 557          * Preload the link cache
 558          * Initialise numResults
 559          *
 560          * Must be called before calling showPrevNext
 561          *
 562          * @return object database result set
 563          */
 564         function getLogRows() {
 565                 $result = $this->reader->getRows();
 566                 $this->numResults = 0;
 567
 568                 // Fetch results and form a batch link existence query
 569                 $batch = new LinkBatch;
 570                 while ( $s = $result->fetchObject() ) {
 571                         // User link
 572                         $batch->addObj( Title::makeTitleSafe( NS_USER, $s->user_name ) );
 573                         $batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $s->user_name ) );
 574
 575                         // Move destination link
 576                         if ( $s->log_type == 'move' ) {
 577                                 $paramArray = LogPage::extractParams( $s->log_params );
 578                                 $title = Title::newFromText( $paramArray[0] );
 579                                 $batch->addObj( $title );
 580                         }
 581                         ++$this->numResults;
 582                 }
 583                 $batch->execute();
 584
 585                 return $result;
 586         }
 587
 588
 589         /**
 590          * Output just the list of entries given by the linked LogReader,
 591          * with extraneous UI elements. Use for displaying log fragments in
 592          * another page (eg at Special:Undelete)
 593          * @param OutputPage $out where to send output
 594          */
 595         function showList( &$out ) {
 596                 $result = $this->getLogRows();
 597                 if ( $this->numResults > 0 ) {
 598                         $this->doShowList( $out, $result );
 599                 } else {
 600                         $this->showError( $out );
 601                 }
 602         }
 603
 604         function doShowList( &$out, $result ) {
 605                 // Rewind result pointer and go through it again, making the HTML
 606                 $html = "\n<ul>\n";
 607                 $result->seek( 0 );
 608                 while( $s = $result->fetchObject() ) {
 609                         $html .= $this->logList->logLine( $s );
 610                 }
 611                 $html .= "\n</ul>\n";
 612                 $out->addHTML( $html );
 613                 $result->free();
 614         }
 615
 616         function showError( &$out ) {
 617                 $out->addWikiMsg( 'logempty' );
 618         }
 619
 620         /**
 621          * @param OutputPage &$out where to send output
 622          * @private
 623          */
 624         function showPrevNext( &$out ) {
 625                 global $wgContLang,$wgRequest;
 626                 $pieces = array();
 627                 $pieces[] = 'type=' . urlencode( $this->reader->queryType() );
 628                 $pieces[] = 'user=' . urlencode( $this->reader->queryUser() );
 629                 $pieces[] = 'page=' . urlencode( $this->reader->queryTitle() );
 630                 $pieces[] = 'pattern=' . urlencode( $this->reader->queryPattern() );
 631                 $bits = implode( '&', $pieces );
 632                 list( $limit, $offset ) = $wgRequest->getLimitOffset();
 633
 634                 # TODO: use timestamps instead of offsets to make it more natural
 635                 # to go huge distances in time
 636                 $html = wfViewPrevNext( $offset, $limit,
 637                         $wgContLang->specialpage( 'Log' ),
 638                         $bits,
 639                         $this->numResults < $limit);
 640                 $out->addHTML( '<p>' . $html . '</p>' );
 641         }
 642 }
 643