includes/specials/SpecialContributions.php

   1 <?php
   2 /**
   3  * Implements Special:Contributions
   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  * Special:Contributions, show user contributions in a paged list
  26  *
  27  * @ingroup SpecialPage
  28  */
  29
  30 class SpecialContributions extends SpecialPage {
  31
  32         public function __construct() {
  33                 parent::__construct( 'Contributions' );
  34         }
  35
  36         public function execute( $par ) {
  37                 global $wgUser, $wgOut, $wgRequest;
  38
  39                 $this->setHeaders();
  40                 $this->outputHeader();
  41
  42                 $this->opts = array();
  43
  44                 if( $par == 'newbies' ) {
  45                         $target = 'newbies';
  46                         $this->opts['contribs'] = 'newbie';
  47                 } elseif( isset( $par ) ) {
  48                         $target = $par;
  49                 } else {
  50                         $target = $wgRequest->getVal( 'target' );
  51                 }
  52
  53                 // check for radiobox
  54                 if( $wgRequest->getVal( 'contribs' ) == 'newbie' ) {
  55                         $target = 'newbies';
  56                         $this->opts['contribs'] = 'newbie';
  57                 }
  58
  59                 $this->opts['deletedOnly'] = $wgRequest->getCheck( 'deletedOnly' );
  60
  61                 if( !strlen( $target ) ) {
  62                         $wgOut->addHTML( $this->getForm() );
  63                         return;
  64                 }
  65
  66                 $this->opts['limit'] = $wgRequest->getInt( 'limit', $wgUser->getOption('rclimit') );
  67                 $this->opts['target'] = $target;
  68                 $this->opts['topOnly'] = $wgRequest->getCheck( 'topOnly' );
  69
  70                 $nt = Title::makeTitleSafe( NS_USER, $target );
  71                 if( !$nt ) {
  72                         $wgOut->addHTML( $this->getForm() );
  73                         return;
  74                 }
  75                 $id = User::idFromName( $nt->getText() );
  76
  77                 if( $target != 'newbies' ) {
  78                         $target = $nt->getText();
  79                         $wgOut->setSubtitle( $this->contributionsSub( $nt, $id ) );
  80                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsgExt( 'contributions-title', array( 'parsemag' ),$target ) ) );
  81                 } else {
  82                         $wgOut->setSubtitle( wfMsgHtml( 'sp-contributions-newbies-sub') );
  83                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'sp-contributions-newbies-title' ) ) );
  84                 }
  85
  86                 if( ( $ns = $wgRequest->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
  87                         $this->opts['namespace'] = intval( $ns );
  88                 } else {
  89                         $this->opts['namespace'] = '';
  90                 }
  91
  92                 $this->opts['tagFilter'] = (string) $wgRequest->getVal( 'tagFilter' );
  93
  94                 // Allows reverts to have the bot flag in recent changes. It is just here to
  95                 // be passed in the form at the top of the page
  96                 if( $wgUser->isAllowed( 'markbotedits' ) && $wgRequest->getBool( 'bot' ) ) {
  97                         $this->opts['bot'] = '1';
  98                 }
  99
 100                 $skip = $wgRequest->getText( 'offset' ) || $wgRequest->getText( 'dir' ) == 'prev';
 101                 # Offset overrides year/month selection
 102                 if( $skip ) {
 103                         $this->opts['year'] = '';
 104                         $this->opts['month'] = '';
 105                 } else {
 106                         $this->opts['year'] = $wgRequest->getIntOrNull( 'year' );
 107                         $this->opts['month'] = $wgRequest->getIntOrNull( 'month' );
 108                 }
 109
 110                 // Add RSS/atom links
 111                 $this->setSyndicated();
 112                 $feedType = $wgRequest->getVal( 'feed' );
 113                 if( $feedType ) {
 114                         return $this->feed( $feedType );
 115                 }
 116
 117                 if ( wfRunHooks( 'SpecialContributionsBeforeMainOutput', array( $id ) ) ) {
 118
 119                         $wgOut->addHTML( $this->getForm() );
 120
 121                         $pager = new ContribsPager( array(
 122                                 'target' => $target,
 123                                 'namespace' => $this->opts['namespace'],
 124                                 'year' => $this->opts['year'],
 125                                 'month' => $this->opts['month'],
 126                                 'deletedOnly' => $this->opts['deletedOnly'],
 127                                 'topOnly' => $this->opts['topOnly'],
 128                         ) );
 129                         if( !$pager->getNumRows() ) {
 130                                 $wgOut->addWikiMsg( 'nocontribs', $target );
 131                         } else {
 132                                 # Show a message about slave lag, if applicable
 133                                 if( ( $lag = $pager->getDatabase()->getLag() ) > 0 )
 134                                         $wgOut->showLagWarning( $lag );
 135
 136                                 $wgOut->addHTML(
 137                                         '<p>' . $pager->getNavigationBar() . '</p>' .
 138                                         $pager->getBody() .
 139                                         '<p>' . $pager->getNavigationBar() . '</p>'
 140                                 );
 141                         }
 142
 143
 144                         # Show the appropriate "footer" message - WHOIS tools, etc.
 145                         if( $target != 'newbies' ) {
 146                                 $message = 'sp-contributions-footer';
 147                                 if ( IP::isIPAddress( $target ) ) {
 148                                         $message = 'sp-contributions-footer-anon';
 149                                 } else {
 150                                         $user = User::newFromName( $target );
 151                                         if ( !$user || $user->isAnon() ) {
 152                                                 // No message for non-existing users
 153                                                 return;
 154                                         }
 155                                 }
 156
 157                                 $text = wfMsgNoTrans( $message, $target );
 158                                 if( !wfEmptyMsg( $message, $text ) && $text != '-' ) {
 159                                         $wgOut->wrapWikiMsg(
 160                                                 "<div class='mw-contributions-footer'>\n$1\n</div>",
 161                                                 array( $message, $target ) );
 162                                 }
 163                         }
 164                 }
 165         }
 166
 167         protected function setSyndicated() {
 168                 global $wgOut;
 169                 $wgOut->setSyndicated( true );
 170                 $wgOut->setFeedAppendQuery( wfArrayToCGI( $this->opts ) );
 171         }
 172
 173         /**
 174          * Generates the subheading with links
 175          * @param $nt Title object for the target
 176          * @param $id Integer: User ID for the target
 177          * @return String: appropriately-escaped HTML to be output literally
 178          * @todo Fixme: almost the same as getSubTitle in SpecialDeletedContributions.php. Could be combined.
 179          */
 180         protected function contributionsSub( $nt, $id ) {
 181                 global $wgSysopUserBans, $wgLang, $wgUser, $wgOut;
 182
 183                 $sk = $wgUser->getSkin();
 184
 185                 if ( $id === null ) {
 186                         $user = htmlspecialchars( $nt->getText() );
 187                 } else {
 188                         $user = $sk->link( $nt, htmlspecialchars( $nt->getText() ) );
 189                 }
 190                 $userObj = User::newFromName( $nt->getText(), /* check for username validity not needed */ false );
 191                 $talk = $nt->getTalkPage();
 192                 if( $talk ) {
 193                         # Talk page link
 194                         $tools[] = $sk->link( $talk, wfMsgHtml( 'sp-contributions-talk' ) );
 195                         if( ( $id !== null && $wgSysopUserBans ) || ( $id === null && IP::isIPAddress( $nt->getText() ) ) ) {
 196                                 if( $wgUser->isAllowed( 'block' ) ) { # Block / Change block / Unblock links
 197                                         if ( $userObj->isBlocked() ) {
 198                                                 $tools[] = $sk->linkKnown( # Change block link
 199                                                         SpecialPage::getTitleFor( 'Blockip', $nt->getDBkey() ),
 200                                                         wfMsgHtml( 'change-blocklink' )
 201                                                 );
 202                                                 $tools[] = $sk->linkKnown( # Unblock link
 203                                                         SpecialPage::getTitleFor( 'Ipblocklist' ),
 204                                                         wfMsgHtml( 'unblocklink' ),
 205                                                         array(),
 206                                                         array(
 207                                                                 'action' => 'unblock',
 208                                                                 'ip' => $nt->getDBkey()
 209                                                         )
 210                                                 );
 211                                         }
 212                                         else { # User is not blocked
 213                                                 $tools[] = $sk->linkKnown( # Block link
 214                                                         SpecialPage::getTitleFor( 'Blockip', $nt->getDBkey() ),
 215                                                         wfMsgHtml( 'blocklink' )
 216                                                 );
 217                                         }
 218                                 }
 219                                 # Block log link
 220                                 $tools[] = $sk->linkKnown(
 221                                         SpecialPage::getTitleFor( 'Log' ),
 222                                         wfMsgHtml( 'sp-contributions-blocklog' ),
 223                                         array(),
 224                                         array(
 225                                                 'type' => 'block',
 226                                                 'page' => $nt->getPrefixedText()
 227                                         )
 228                                 );
 229                         }
 230                         # Uploads
 231                         $tools[] = $sk->linkKnown(
 232                                 SpecialPage::getTitleFor( 'Listfiles' ),
 233                                 wfMsgHtml( 'sp-contributions-uploads' ),
 234                                 array(),
 235                                 array( 'user' => $nt->getText() )
 236                         );
 237
 238                         # Other logs link
 239                         $tools[] = $sk->linkKnown(
 240                                 SpecialPage::getTitleFor( 'Log' ),
 241                                 wfMsgHtml( 'sp-contributions-logs' ),
 242                                 array(),
 243                                 array( 'user' => $nt->getText() )
 244                         );
 245
 246                         # Add link to deleted user contributions for priviledged users
 247                         if( $wgUser->isAllowed( 'deletedhistory' ) ) {
 248                                 $tools[] = $sk->linkKnown(
 249                                         SpecialPage::getTitleFor( 'DeletedContributions', $nt->getDBkey() ),
 250                                         wfMsgHtml( 'sp-contributions-deleted' )
 251                                 );
 252                         }
 253
 254                         # Add a link to change user rights for privileged users
 255                         $userrightsPage = new UserrightsPage();
 256                         if( $id !== null && $userrightsPage->userCanChangeRights( User::newFromId( $id ) ) ) {
 257                                 $tools[] = $sk->linkKnown(
 258                                         SpecialPage::getTitleFor( 'Userrights', $nt->getDBkey() ),
 259                                         wfMsgHtml( 'sp-contributions-userrights' )
 260                                 );
 261                         }
 262
 263                         wfRunHooks( 'ContributionsToolLinks', array( $id, $nt, &$tools ) );
 264
 265                         $links = $wgLang->pipeList( $tools );
 266
 267                         // Show a note if the user is blocked and display the last block log entry.
 268                         if ( $userObj->isBlocked() ) {
 269                                 LogEventsList::showLogExtract(
 270                                         $wgOut,
 271                                         'block',
 272                                         $nt->getPrefixedText(),
 273                                         '',
 274                                         array(
 275                                                 'lim' => 1,
 276                                                 'showIfEmpty' => false,
 277                                                 'msgKey' => array(
 278                                                         $userObj->isAnon() ?
 279                                                                 'sp-contributions-blocked-notice-anon' :
 280                                                                 'sp-contributions-blocked-notice',
 281                                                         $nt->getText() # Support GENDER in 'sp-contributions-blocked-notice'
 282                                                 ),
 283                                                 'offset' => '' # don't use $wgRequest parameter offset
 284                                         )
 285                                 );
 286                         }
 287                 }
 288
 289                 // Old message 'contribsub' had one parameter, but that doesn't work for
 290                 // languages that want to put the "for" bit right after $user but before
 291                 // $links.  If 'contribsub' is around, use it for reverse compatibility,
 292                 // otherwise use 'contribsub2'.
 293                 if( wfEmptyMsg( 'contribsub', wfMsg( 'contribsub' ) ) ) {
 294                         return wfMsgHtml( 'contribsub2', $user, $links );
 295                 } else {
 296                         return wfMsgHtml( 'contribsub', "$user ($links)" );
 297                 }
 298         }
 299
 300         /**
 301          * Generates the namespace selector form with hidden attributes.
 302          * @return String: HTML fragment
 303          */
 304         protected function getForm() {
 305                 global $wgScript;
 306
 307                 $this->opts['title'] = $this->getTitle()->getPrefixedText();
 308                 if( !isset( $this->opts['target'] ) ) {
 309                         $this->opts['target'] = '';
 310                 } else {
 311                         $this->opts['target'] = str_replace( '_' , ' ' , $this->opts['target'] );
 312                 }
 313
 314                 if( !isset( $this->opts['namespace'] ) ) {
 315                         $this->opts['namespace'] = '';
 316                 }
 317
 318                 if( !isset( $this->opts['contribs'] ) ) {
 319                         $this->opts['contribs'] = 'user';
 320                 }
 321
 322                 if( !isset( $this->opts['year'] ) ) {
 323                         $this->opts['year'] = '';
 324                 }
 325
 326                 if( !isset( $this->opts['month'] ) ) {
 327                         $this->opts['month'] = '';
 328                 }
 329
 330                 if( $this->opts['contribs'] == 'newbie' ) {
 331                         $this->opts['target'] = '';
 332                 }
 333
 334                 if( !isset( $this->opts['tagFilter'] ) ) {
 335                         $this->opts['tagFilter'] = '';
 336                 }
 337
 338                 if( !isset( $this->opts['topOnly'] ) ) {
 339                         $this->opts['topOnly'] = false;
 340                 }
 341
 342                 $f = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'class' => 'mw-contributions-form' ) );
 343
 344                 # Add hidden params for tracking except for parameters in $skipParameters
 345                 $skipParameters = array( 'namespace', 'deletedOnly', 'target', 'contribs', 'year', 'month', 'topOnly' );
 346                 foreach ( $this->opts as $name => $value ) {
 347                         if( in_array( $name, $skipParameters ) ) {
 348                                 continue;
 349                         }
 350                         $f .= "\t" . Html::hidden( $name, $value ) . "\n";
 351                 }
 352
 353                 $tagFilter = ChangeTags::buildTagFilterSelector( $this->opts['tagFilter'] );
 354
 355                 $f .=   Xml::fieldset( wfMsg( 'sp-contributions-search' ) ) .
 356                         Xml::radioLabel( wfMsgExt( 'sp-contributions-newbies', array( 'parsemag' ) ),
 357                                 'contribs', 'newbie' , 'newbie', $this->opts['contribs'] == 'newbie' ) . '<br />' .
 358                         Xml::radioLabel( wfMsgExt( 'sp-contributions-username', array( 'parsemag' ) ),
 359                                 'contribs' , 'user', 'user', $this->opts['contribs'] == 'user' ) . ' ' .
 360                         Html::input( 'target', $this->opts['target'], 'text', array(
 361                                 'size' => '20',
 362                                 'required' => ''
 363                         ) + ( $this->opts['target'] ? array() : array( 'autofocus' ) ) ) . ' '.
 364                         Html::rawElement( 'span', array( 'style' => 'white-space: nowrap' ),
 365                                 Xml::label( wfMsg( 'namespace' ), 'namespace' ) . ' ' .
 366                                 Xml::namespaceSelector( $this->opts['namespace'], '' )
 367                         ) .
 368                         Xml::checkLabel( wfMsg( 'history-show-deleted' ),
 369                                 'deletedOnly', 'mw-show-deleted-only', $this->opts['deletedOnly'] ) . '<br />' .
 370                         Xml::tags( 'p', null, Xml::checkLabel( wfMsg( 'sp-contributions-toponly' ),
 371                                 'topOnly', 'mw-show-top-only', $this->opts['topOnly'] ) ) .
 372                         ( $tagFilter ? Xml::tags( 'p', null, implode( '&#160;', $tagFilter ) ) : '' ) .
 373                         Html::rawElement( 'p', array( 'style' => 'white-space: nowrap' ),
 374                                 Xml::dateMenu( $this->opts['year'], $this->opts['month'] ) . ' ' .
 375                                 Xml::submitButton( wfMsg( 'sp-contributions-submit' ) )
 376                         ) . ' ';
 377                 $explain = wfMsgExt( 'sp-contributions-explain', 'parseinline' );
 378                 if( !wfEmptyMsg( 'sp-contributions-explain', $explain ) ) {
 379                         $f .= "<p id='mw-sp-contributions-explain'>{$explain}</p>";
 380                 }
 381                 $f .= Xml::closeElement('fieldset' ) .
 382                         Xml::closeElement( 'form' );
 383                 return $f;
 384         }
 385
 386         /**
 387          * Output a subscription feed listing recent edits to this page.
 388          * @param $type String
 389          */
 390         protected function feed( $type ) {
 391                 global $wgFeed, $wgFeedClasses, $wgFeedLimit, $wgOut;
 392
 393                 if( !$wgFeed ) {
 394                         $wgOut->addWikiMsg( 'feed-unavailable' );
 395                         return;
 396                 }
 397
 398                 if( !isset( $wgFeedClasses[$type] ) ) {
 399                         $wgOut->addWikiMsg( 'feed-invalid' );
 400                         return;
 401                 }
 402
 403                 $feed = new $wgFeedClasses[$type](
 404                         $this->feedTitle(),
 405                         wfMsgExt( 'tagline', 'parsemag' ),
 406                         $this->getTitle()->getFullUrl() . "/" . urlencode($this->opts['target'])
 407                 );
 408
 409                 // Already valid title
 410                 $nt = Title::makeTitleSafe( NS_USER, $this->opts['target'] );
 411                 $target = $this->opts['target'] == 'newbies' ? 'newbies' : $nt->getText();
 412
 413                 $pager = new ContribsPager( array(
 414                         'target' => $target,
 415                         'namespace' => $this->opts['namespace'],
 416                         'year' => $this->opts['year'],
 417                         'month' => $this->opts['month'],
 418                         'tagFilter' => $this->opts['tagFilter'],
 419                         'deletedOnly' => $this->opts['deletedOnly'],
 420                         'topOnly' => $this->opts['topOnly'],
 421                 ) );
 422
 423                 $pager->mLimit = min( $this->opts['limit'], $wgFeedLimit );
 424
 425                 $feed->outHeader();
 426                 if( $pager->getNumRows() > 0 ) {
 427                         foreach ( $pager->mResult as $row ) {
 428                                 $feed->outItem( $this->feedItem( $row ) );
 429                         }
 430                 }
 431                 $feed->outFooter();
 432         }
 433
 434         protected function feedTitle() {
 435                 global $wgLanguageCode, $wgSitename;
 436                 $page = SpecialPage::getPage( 'Contributions' );
 437                 $desc = $page->getDescription();
 438                 return "$wgSitename - $desc [$wgLanguageCode]";
 439         }
 440
 441         protected function feedItem( $row ) {
 442                 $title = Title::MakeTitle( intval( $row->page_namespace ), $row->page_title );
 443                 if( $title ) {
 444                         $date = $row->rev_timestamp;
 445                         $comments = $title->getTalkPage()->getFullURL();
 446                         $revision = Revision::newFromTitle( $title, $row->rev_id );
 447
 448                         return new FeedItem(
 449                                 $title->getPrefixedText(),
 450                                 $this->feedItemDesc( $revision ),
 451                                 $title->getFullURL(),
 452                                 $date,
 453                                 $this->feedItemAuthor( $revision ),
 454                                 $comments
 455                         );
 456                 } else {
 457                         return null;
 458                 }
 459         }
 460
 461         protected function feedItemAuthor( $revision ) {
 462                 return $revision->getUserText();
 463         }
 464
 465         protected function feedItemDesc( $revision ) {
 466                 if( $revision ) {
 467                         return '<p>' . htmlspecialchars( $revision->getUserText() ) . wfMsgForContent( 'colon-separator' ) .
 468                                 htmlspecialchars( FeedItem::stripComment( $revision->getComment() ) ) .
 469                                 "</p>\n<hr />\n<div>" .
 470                                 nl2br( htmlspecialchars( $revision->getText() ) ) . "</div>";
 471                 }
 472                 return '';
 473         }
 474 }
 475
 476 /**
 477  * Pager for Special:Contributions
 478  * @ingroup SpecialPage Pager
 479  */
 480 class ContribsPager extends ReverseChronologicalPager {
 481         public $mDefaultDirection = true;
 482         var $messages, $target;
 483         var $namespace = '', $mDb;
 484
 485         function __construct( $options ) {
 486                 parent::__construct();
 487
 488                 $msgs = array( 'uctop', 'diff', 'newarticle', 'rollbacklink', 'diff', 'hist', 'rev-delundel', 'pipe-separator' );
 489
 490                 foreach( $msgs as $msg ) {
 491                         $this->messages[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
 492                 }
 493
 494                 $this->target = isset( $options['target'] ) ? $options['target'] : '';
 495                 $this->namespace = isset( $options['namespace'] ) ? $options['namespace'] : '';
 496                 $this->tagFilter = isset( $options['tagFilter'] ) ? $options['tagFilter'] : false;
 497
 498                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 499                 $this->topOnly = !empty( $options['topOnly'] );
 500
 501                 $year = isset( $options['year'] ) ? $options['year'] : false;
 502                 $month = isset( $options['month'] ) ? $options['month'] : false;
 503                 $this->getDateCond( $year, $month );
 504
 505                 $this->mDb = wfGetDB( DB_SLAVE, 'contributions' );
 506         }
 507
 508         function getDefaultQuery() {
 509                 $query = parent::getDefaultQuery();
 510                 $query['target'] = $this->target;
 511                 return $query;
 512         }
 513
 514         function getQueryInfo() {
 515                 global $wgUser;
 516                 list( $tables, $index, $userCond, $join_cond ) = $this->getUserCond();
 517
 518                 $conds = array_merge( $userCond, $this->getNamespaceCond() );
 519                 // Paranoia: avoid brute force searches (bug 17342)
 520                 if( !$wgUser->isAllowed( 'deletedhistory' ) ) {
 521                         $conds[] = $this->mDb->bitAnd('rev_deleted',Revision::DELETED_USER) . ' = 0';
 522                 } else if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
 523                         $conds[] = $this->mDb->bitAnd('rev_deleted',Revision::SUPPRESSED_USER) .
 524                                 ' != ' . Revision::SUPPRESSED_USER;
 525                 }
 526                 $join_cond['page'] = array( 'INNER JOIN', 'page_id=rev_page' );
 527
 528                 $queryInfo = array(
 529                         'tables' => $tables,
 530                         'fields' => array(
 531                                 'page_namespace', 'page_title', 'page_is_new', 'page_latest', 'page_is_redirect',
 532                                 'page_len','rev_id', 'rev_page', 'rev_text_id', 'rev_timestamp', 'rev_comment',
 533                                 'rev_minor_edit', 'rev_user', 'rev_user_text', 'rev_parent_id', 'rev_deleted'
 534                         ),
 535                         'conds' => $conds,
 536                         'options' => array( 'USE INDEX' => array('revision' => $index) ),
 537                         'join_conds' => $join_cond
 538                 );
 539
 540                 ChangeTags::modifyDisplayQuery(
 541                         $queryInfo['tables'],
 542                         $queryInfo['fields'],
 543                         $queryInfo['conds'],
 544                         $queryInfo['join_conds'],
 545                         $queryInfo['options'],
 546                         $this->tagFilter
 547                 );
 548
 549                 wfRunHooks( 'ContribsPager::getQueryInfo', array( &$this, &$queryInfo ) );
 550                 return $queryInfo;
 551         }
 552
 553         function getUserCond() {
 554                 $condition = array();
 555                 $join_conds = array();
 556                 if( $this->target == 'newbies' ) {
 557                         $tables = array( 'user_groups', 'page', 'revision' );
 558                         $max = $this->mDb->selectField( 'user', 'max(user_id)', false, __METHOD__ );
 559                         $condition[] = 'rev_user >' . (int)($max - $max / 100);
 560                         $condition[] = 'ug_group IS NULL';
 561                         $index = 'user_timestamp';
 562                         # FIXME: other groups may have 'bot' rights
 563                         $join_conds['user_groups'] = array( 'LEFT JOIN', "ug_user = rev_user AND ug_group = 'bot'" );
 564                 } else {
 565                         $tables = array( 'page', 'revision' );
 566                         $condition['rev_user_text'] = $this->target;
 567                         $index = 'usertext_timestamp';
 568                 }
 569                 if( $this->deletedOnly ) {
 570                         $condition[] = "rev_deleted != '0'";
 571                 }
 572                 if( $this->topOnly ) {
 573                         $condition[] = "rev_id = page_latest";
 574                 }
 575                 return array( $tables, $index, $condition, $join_conds );
 576         }
 577
 578         function getNamespaceCond() {
 579                 if( $this->namespace !== '' ) {
 580                         return array( 'page_namespace' => (int)$this->namespace );
 581                 } else {
 582                         return array();
 583                 }
 584         }
 585
 586         function getIndexField() {
 587                 return 'rev_timestamp';
 588         }
 589
 590         function getStartBody() {
 591                 return "<ul>\n";
 592         }
 593
 594         function getEndBody() {
 595                 return "</ul>\n";
 596         }
 597
 598         /**
 599          * Generates each row in the contributions list.
 600          *
 601          * Contributions which are marked "top" are currently on top of the history.
 602          * For these contributions, a [rollback] link is shown for users with roll-
 603          * back privileges. The rollback link restores the most recent version that
 604          * was not written by the target user.
 605          *
 606          * @todo This would probably look a lot nicer in a table.
 607          */
 608         function formatRow( $row ) {
 609                 global $wgUser, $wgLang, $wgContLang;
 610                 wfProfileIn( __METHOD__ );
 611
 612                 $sk = $this->getSkin();
 613                 $rev = new Revision( $row );
 614                 $classes = array();
 615
 616                 $page = Title::newFromRow( $row );
 617                 $page->resetArticleId( $row->rev_page ); // use process cache
 618                 $link = $sk->link(
 619                         $page,
 620                         htmlspecialchars( $page->getPrefixedText() ),
 621                         array(),
 622                         $page->isRedirect() ? array( 'redirect' => 'no' ) : array()
 623                 );
 624                 # Mark current revisions
 625                 $topmarktext = '';
 626                 if( $row->rev_id == $row->page_latest ) {
 627                         $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 628                         # Add rollback link
 629                         if( !$row->page_is_new && $page->quickUserCan( 'rollback' )
 630                                 && $page->quickUserCan( 'edit' ) )
 631                         {
 632                                 $topmarktext .= ' '.$sk->generateRollback( $rev );
 633                         }
 634                 }
 635                 # Is there a visible previous revision?
 636                 if( $rev->userCan( Revision::DELETED_TEXT ) && $rev->getParentId() !== 0 ) {
 637                         $difftext = $sk->linkKnown(
 638                                 $page,
 639                                 $this->messages['diff'],
 640                                 array(),
 641                                 array(
 642                                         'diff' => 'prev',
 643                                         'oldid' => $row->rev_id
 644                                 )
 645                         );
 646                 } else {
 647                         $difftext = $this->messages['diff'];
 648                 }
 649                 $histlink = $sk->linkKnown(
 650                         $page,
 651                         $this->messages['hist'],
 652                         array(),
 653                         array( 'action' => 'history' )
 654                 );
 655
 656                 $comment = $wgContLang->getDirMark() . $sk->revComment( $rev, false, true );
 657                 $date = $wgLang->timeanddate( wfTimestamp( TS_MW, $row->rev_timestamp ), true );
 658                 if( $rev->userCan( Revision::DELETED_TEXT ) ) {
 659                         $d = $sk->linkKnown(
 660                                 $page,
 661                                 htmlspecialchars($date),
 662                                 array(),
 663                                 array( 'oldid' => intval( $row->rev_id ) )
 664                         );
 665                 } else {
 666                         $d = $date;
 667                 }
 668                 if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 669                         $d = '<span class="history-deleted">' . $d . '</span>';
 670                 }
 671
 672                 if( $this->target == 'newbies' ) {
 673                         $userlink = ' . . ' . $sk->userLink( $row->rev_user, $row->rev_user_text );
 674                         $userlink .= ' ' . wfMsg( 'parentheses', $sk->userTalkLink( $row->rev_user, $row->rev_user_text ) ) . ' ';
 675                 } else {
 676                         $userlink = '';
 677                 }
 678
 679                 if( $rev->getParentId() === 0 ) {
 680                         $nflag = ChangesList::flag( 'newpage' );
 681                 } else {
 682                         $nflag = '';
 683                 }
 684
 685                 if( $rev->isMinor() ) {
 686                         $mflag = ChangesList::flag( 'minor' );
 687                 } else {
 688                         $mflag = '';
 689                 }
 690
 691                 // Don't show useless link to people who cannot hide revisions
 692                 $canHide = $wgUser->isAllowed( 'deleterevision' );
 693                 if( $canHide || ($rev->getVisibility() && $wgUser->isAllowed('deletedhistory')) ) {
 694                         if( !$rev->userCan( Revision::DELETED_RESTRICTED ) ) {
 695                                 $del = $this->mSkin->revDeleteLinkDisabled( $canHide ); // revision was hidden from sysops
 696                         } else {
 697                                 $query = array(
 698                                         'type'   => 'revision',
 699                                         'target' => $page->getPrefixedDbkey(),
 700                                         'ids'    => $rev->getId()
 701                                 );
 702                                 $del = $this->mSkin->revDeleteLink( $query,
 703                                         $rev->isDeleted( Revision::DELETED_RESTRICTED ), $canHide );
 704                         }
 705                         $del .= ' ';
 706                 } else {
 707                         $del = '';
 708                 }
 709
 710                 $diffHistLinks = '(' . $difftext . $this->messages['pipe-separator'] . $histlink . ')';
 711                 $ret = "{$del}{$d} {$diffHistLinks} {$nflag}{$mflag} {$link}{$userlink} {$comment} {$topmarktext}";
 712
 713                 # Denote if username is redacted for this edit
 714                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 715                         $ret .= " <strong>" . wfMsgHtml('rev-deleted-user-contribs') . "</strong>";
 716                 }
 717
 718                 # Tags, if any.
 719                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $row->ts_tags, 'contributions' );
 720                 $classes = array_merge( $classes, $newClasses );
 721                 $ret .= " $tagSummary";
 722
 723                 // Let extensions add data
 724                 wfRunHooks( 'ContributionsLineEnding', array( &$this, &$ret, $row ) );
 725
 726                 $classes = implode( ' ', $classes );
 727                 $ret = "<li class=\"$classes\">$ret</li>\n";
 728                 wfProfileOut( __METHOD__ );
 729                 return $ret;
 730         }
 731
 732         /**
 733          * Get the Database object in use
 734          *
 735          * @return Database
 736          */
 737         public function getDatabase() {
 738                 return $this->mDb;
 739         }
 740
 741         /**
 742          * Overwrite Pager function and return a helpful comment
 743          */
 744         function getSqlComment() {
 745                 if ( $this->namespace || $this->deletedOnly ) {
 746                         return 'contributions page filtered for namespace or RevisionDeleted edits'; // potentially slow, see CR r58153
 747                 } else {
 748                         return 'contributions page unfiltered';
 749                 }
 750         }
 751
 752 }