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         protected $opts;
  33
  34         public function __construct() {
  35                 parent::__construct( 'Contributions' );
  36         }
  37
  38         public function execute( $par ) {
  39                 global $wgUser, $wgOut, $wgRequest;
  40
  41                 $this->setHeaders();
  42                 $this->outputHeader();
  43                 $wgOut->addModuleStyles( 'mediawiki.special' );
  44
  45                 $this->opts = array();
  46
  47                 if( $par == 'newbies' ) {
  48                         $target = 'newbies';
  49                         $this->opts['contribs'] = 'newbie';
  50                 } elseif( isset( $par ) ) {
  51                         $target = $par;
  52                 } else {
  53                         $target = $wgRequest->getVal( 'target' );
  54                 }
  55
  56                 // check for radiobox
  57                 if( $wgRequest->getVal( 'contribs' ) == 'newbie' ) {
  58                         $target = 'newbies';
  59                         $this->opts['contribs'] = 'newbie';
  60                 }
  61
  62                 $this->opts['deletedOnly'] = $wgRequest->getBool( 'deletedOnly' );
  63
  64                 if( !strlen( $target ) ) {
  65                         $wgOut->addHTML( $this->getForm() );
  66                         return;
  67                 }
  68
  69                 $this->opts['limit'] = $wgRequest->getInt( 'limit', $wgUser->getOption('rclimit') );
  70                 $this->opts['target'] = $target;
  71                 $this->opts['topOnly'] = $wgRequest->getBool( 'topOnly' );
  72                 $this->opts['showSizeDiff'] = $wgRequest->getBool( 'showSizeDiff' );
  73
  74                 $nt = Title::makeTitleSafe( NS_USER, $target );
  75                 if( !$nt ) {
  76                         $wgOut->addHTML( $this->getForm() );
  77                         return;
  78                 }
  79                 $id = User::idFromName( $nt->getText() );
  80
  81                 if( $target != 'newbies' ) {
  82                         $target = $nt->getText();
  83                         $wgOut->setSubtitle( $this->contributionsSub( $nt, $id ) );
  84                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsgExt( 'contributions-title', array( 'parsemag' ),$target ) ) );
  85                         $user = User::newFromName( $target, false );
  86                         if ( is_object($user) ) {
  87                                 $wgUser->getSkin()->setRelevantUser( $user );
  88                         }
  89                 } else {
  90                         $wgOut->setSubtitle( wfMsgHtml( 'sp-contributions-newbies-sub') );
  91                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'sp-contributions-newbies-title' ) ) );
  92                 }
  93
  94                 if( ( $ns = $wgRequest->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
  95                         $this->opts['namespace'] = intval( $ns );
  96                 } else {
  97                         $this->opts['namespace'] = '';
  98                 }
  99
 100                 $this->opts['tagFilter'] = (string) $wgRequest->getVal( 'tagFilter' );
 101
 102                 // Allows reverts to have the bot flag in recent changes. It is just here to
 103                 // be passed in the form at the top of the page
 104                 if( $wgUser->isAllowed( 'markbotedits' ) && $wgRequest->getBool( 'bot' ) ) {
 105                         $this->opts['bot'] = '1';
 106                 }
 107
 108                 $skip = $wgRequest->getText( 'offset' ) || $wgRequest->getText( 'dir' ) == 'prev';
 109                 # Offset overrides year/month selection
 110                 if( $skip ) {
 111                         $this->opts['year'] = '';
 112                         $this->opts['month'] = '';
 113                 } else {
 114                         $this->opts['year'] = $wgRequest->getIntOrNull( 'year' );
 115                         $this->opts['month'] = $wgRequest->getIntOrNull( 'month' );
 116                 }
 117
 118                 // Add RSS/atom links
 119                 $this->setSyndicated();
 120                 $feedType = $wgRequest->getVal( 'feed' );
 121                 if( $feedType ) {
 122                         return $this->feed( $feedType );
 123                 }
 124
 125                 if ( wfRunHooks( 'SpecialContributionsBeforeMainOutput', array( $id ) ) ) {
 126
 127                         $wgOut->addHTML( $this->getForm() );
 128
 129                         $pager = new ContribsPager( array(
 130                                 'target' => $target,
 131                                 'namespace' => $this->opts['namespace'],
 132                                 'year' => $this->opts['year'],
 133                                 'month' => $this->opts['month'],
 134                                 'deletedOnly' => $this->opts['deletedOnly'],
 135                                 'topOnly' => $this->opts['topOnly'],
 136                                 'showSizeDiff' => $this->opts['showSizeDiff'],
 137                         ) );
 138                         if( !$pager->getNumRows() ) {
 139                                 $wgOut->addWikiMsg( 'nocontribs', $target );
 140                         } else {
 141                                 # Show a message about slave lag, if applicable
 142                                 if( ( $lag = $pager->getDatabase()->getLag() ) > 0 )
 143                                         $wgOut->showLagWarning( $lag );
 144
 145                                 $wgOut->addHTML(
 146                                         '<p>' . $pager->getNavigationBar() . '</p>' .
 147                                         $pager->getBody() .
 148                                         '<p>' . $pager->getNavigationBar() . '</p>'
 149                                 );
 150                         }
 151                         $wgOut->preventClickjacking( $pager->getPreventClickjacking() );
 152
 153
 154                         # Show the appropriate "footer" message - WHOIS tools, etc.
 155                         if( $target != 'newbies' ) {
 156                                 $message = 'sp-contributions-footer';
 157                                 if ( IP::isIPAddress( $target ) ) {
 158                                         $message = 'sp-contributions-footer-anon';
 159                                 } else {
 160                                         $user = User::newFromName( $target );
 161                                         if ( !$user || $user->isAnon() ) {
 162                                                 // No message for non-existing users
 163                                                 return;
 164                                         }
 165                                 }
 166
 167                                 if( !wfMessage( $message, $target )->isDisabled() ) {
 168                                         $wgOut->wrapWikiMsg(
 169                                                 "<div class='mw-contributions-footer'>\n$1\n</div>",
 170                                                 array( $message, $target ) );
 171                                 }
 172                         }
 173                 }
 174         }
 175
 176         protected function setSyndicated() {
 177                 global $wgOut;
 178                 $wgOut->setSyndicated( true );
 179                 $wgOut->setFeedAppendQuery( wfArrayToCGI( $this->opts ) );
 180         }
 181
 182         /**
 183          * Generates the subheading with links
 184          * @param $nt Title object for the target
 185          * @param $id Integer: User ID for the target
 186          * @return String: appropriately-escaped HTML to be output literally
 187          * @todo Fixme: almost the same as getSubTitle in SpecialDeletedContributions.php. Could be combined.
 188          */
 189         protected function contributionsSub( $nt, $id ) {
 190                 global $wgLang, $wgUser, $wgOut;
 191
 192                 $sk = $wgUser->getSkin();
 193
 194                 if ( $id === null ) {
 195                         $user = htmlspecialchars( $nt->getText() );
 196                 } else {
 197                         $user = $sk->link( $nt, htmlspecialchars( $nt->getText() ) );
 198                 }
 199                 $userObj = User::newFromName( $nt->getText(), /* check for username validity not needed */ false );
 200                 $talk = $nt->getTalkPage();
 201                 if( $talk ) {
 202                         $tools = self::getUserLinks( $nt, $talk, $userObj, $wgUser );
 203                         $links = $wgLang->pipeList( $tools );
 204
 205                         // Show a note if the user is blocked and display the last block log entry.
 206                         if ( $userObj->isBlocked() ) {
 207                                 LogEventsList::showLogExtract(
 208                                         $wgOut,
 209                                         'block',
 210                                         $nt->getPrefixedText(),
 211                                         '',
 212                                         array(
 213                                                 'lim' => 1,
 214                                                 'showIfEmpty' => false,
 215                                                 'msgKey' => array(
 216                                                         $userObj->isAnon() ?
 217                                                                 'sp-contributions-blocked-notice-anon' :
 218                                                                 'sp-contributions-blocked-notice',
 219                                                         $nt->getText() # Support GENDER in 'sp-contributions-blocked-notice'
 220                                                 ),
 221                                                 'offset' => '' # don't use $wgRequest parameter offset
 222                                         )
 223                                 );
 224                         }
 225                 }
 226
 227                 // Old message 'contribsub' had one parameter, but that doesn't work for
 228                 // languages that want to put the "for" bit right after $user but before
 229                 // $links.  If 'contribsub' is around, use it for reverse compatibility,
 230                 // otherwise use 'contribsub2'.
 231                 if( wfEmptyMsg( 'contribsub' ) ) {
 232                         return wfMsgHtml( 'contribsub2', $user, $links );
 233                 } else {
 234                         return wfMsgHtml( 'contribsub', "$user ($links)" );
 235                 }
 236         }
 237
 238         /**
 239          * Links to different places.
 240          * @param $userpage Title: Target user page
 241          * @param $talkpage Title: Talk page
 242          * @param $target User: Target user object
 243          * @param $subject User: The viewing user ($wgUser is still checked in some cases, like userrights page!!)
 244          */
 245         public static function getUserLinks( Title $userpage, Title $talkpage, User $target, User $subject ) {
 246
 247                 $sk = $subject->getSkin();
 248                 $id = $target->getId();
 249                 $username = $target->getName();
 250
 251                 $tools[] = $sk->link( $talkpage, wfMsgHtml( 'sp-contributions-talk' ) );
 252
 253                 if( ( $id !== null ) || ( $id === null && IP::isIPAddress( $username ) ) ) {
 254                         if( $subject->isAllowed( 'block' ) ) { # Block / Change block / Unblock links
 255                                 if ( $target->isBlocked() ) {
 256                                         $tools[] = $sk->linkKnown( # Change block link
 257                                                 SpecialPage::getTitleFor( 'Block', $username ),
 258                                                 wfMsgHtml( 'change-blocklink' )
 259                                         );
 260                                         $tools[] = $sk->linkKnown( # Unblock link
 261                                                 SpecialPage::getTitleFor( 'Unblock', $username ),
 262                                                 wfMsgHtml( 'unblocklink' )
 263                                         );
 264                                 } else { # User is not blocked
 265                                         $tools[] = $sk->linkKnown( # Block link
 266                                                 SpecialPage::getTitleFor( 'Block', $username ),
 267                                                 wfMsgHtml( 'blocklink' )
 268                                         );
 269                                 }
 270                         }
 271                         # Block log link
 272                         $tools[] = $sk->linkKnown(
 273                                 SpecialPage::getTitleFor( 'Log' ),
 274                                 wfMsgHtml( 'sp-contributions-blocklog' ),
 275                                 array(),
 276                                 array(
 277                                         'type' => 'block',
 278                                         'page' => $userpage->getPrefixedText()
 279                                 )
 280                         );
 281                 }
 282                 # Uploads
 283                 $tools[] = $sk->linkKnown(
 284                         SpecialPage::getTitleFor( 'Listfiles', $username ),
 285                         wfMsgHtml( 'sp-contributions-uploads' )
 286                 );
 287
 288                 # Other logs link
 289                 $tools[] = $sk->linkKnown(
 290                         SpecialPage::getTitleFor( 'Log' ),
 291                         wfMsgHtml( 'sp-contributions-logs' ),
 292                         array(),
 293                         array( 'user' => $username )
 294                 );
 295
 296                 # Add link to deleted user contributions for priviledged users
 297                 if( $subject->isAllowed( 'deletedhistory' ) ) {
 298                         $tools[] = $sk->linkKnown(
 299                                 SpecialPage::getTitleFor( 'DeletedContributions', $username ),
 300                                 wfMsgHtml( 'sp-contributions-deleted' )
 301                         );
 302                 }
 303
 304                 # Add a link to change user rights for privileged users
 305                 $userrightsPage = new UserrightsPage();
 306                 if( $id !== null && $userrightsPage->userCanChangeRights( $target ) ) {
 307                         $tools[] = $sk->linkKnown(
 308                                 SpecialPage::getTitleFor( 'Userrights', $username ),
 309                                 wfMsgHtml( 'sp-contributions-userrights' )
 310                         );
 311                 }
 312
 313                 wfRunHooks( 'ContributionsToolLinks', array( $id, $userpage, &$tools ) );
 314                 return $tools;
 315         }
 316
 317         /**
 318          * Generates the namespace selector form with hidden attributes.
 319          * @return String: HTML fragment
 320          */
 321         protected function getForm() {
 322                 global $wgScript, $wgMiserMode, $wgRCMaxAge, $wgContLang;
 323
 324                 $this->opts['title'] = $this->getTitle()->getPrefixedText();
 325                 if( !isset( $this->opts['target'] ) ) {
 326                         $this->opts['target'] = '';
 327                 } else {
 328                         $this->opts['target'] = str_replace( '_' , ' ' , $this->opts['target'] );
 329                 }
 330
 331                 if( !isset( $this->opts['namespace'] ) ) {
 332                         $this->opts['namespace'] = '';
 333                 }
 334
 335                 if( !isset( $this->opts['contribs'] ) ) {
 336                         $this->opts['contribs'] = 'user';
 337                 }
 338
 339                 if( !isset( $this->opts['year'] ) ) {
 340                         $this->opts['year'] = '';
 341                 }
 342
 343                 if( !isset( $this->opts['month'] ) ) {
 344                         $this->opts['month'] = '';
 345                 }
 346
 347                 if( $this->opts['contribs'] == 'newbie' ) {
 348                         $this->opts['target'] = '';
 349                 }
 350
 351                 if( !isset( $this->opts['tagFilter'] ) ) {
 352                         $this->opts['tagFilter'] = '';
 353                 }
 354
 355                 if( !isset( $this->opts['topOnly'] ) ) {
 356                         $this->opts['topOnly'] = false;
 357                 }
 358
 359                 if( !isset( $this->opts['showSizeDiff'] ) ) {
 360                         $this->opts['showSizeDiff'] = !$wgMiserMode;
 361                 }
 362
 363                 $f = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'class' => 'mw-contributions-form' ) );
 364
 365                 # Add hidden params for tracking except for parameters in $skipParameters
 366                 $skipParameters = array( 'namespace', 'deletedOnly', 'target', 'contribs', 'year', 'month', 'topOnly', 'showSizeDiff' );
 367                 foreach ( $this->opts as $name => $value ) {
 368                         if( in_array( $name, $skipParameters ) ) {
 369                                 continue;
 370                         }
 371                         $f .= "\t" . Html::hidden( $name, $value ) . "\n";
 372                 }
 373
 374                 $tagFilter = ChangeTags::buildTagFilterSelector( $this->opts['tagFilter'] );
 375
 376                 $fNS = '';
 377                 $fShowDiff = '';
 378                 if ( !$wgMiserMode ) {
 379                         $fNS = Html::rawElement( 'span', array( 'style' => 'white-space: nowrap' ),
 380                                         Xml::label( wfMsg( 'namespace' ), 'namespace' ) . ' ' .
 381                                         Xml::namespaceSelector( $this->opts['namespace'], '' )
 382                                 );
 383                         $fShowDiff = Xml::infoBox(
 384                                         Xml::checkLabel( wfMsg( 'sp-contributions-showsizediff' ), 'showSizeDiff', 'mw-show-size-diff', $this->opts['showSizeDiff'] ) . '<br />'.
 385                                         wfMsgReplaceArgs ( wfMsg( 'sp-contributions-showsizediff-warn' ),  array( $wgContLang->formatTimePeriod( $wgRCMaxAge ) ) )
 386                                         , 'warning-32.png', wfMsg( 'sp-contributions-showsizediff' )
 387                                 );
 388                 }
 389
 390                 $f .=   Xml::fieldset( wfMsg( 'sp-contributions-search' ) ) .
 391                         Xml::radioLabel( wfMsgExt( 'sp-contributions-newbies', array( 'parsemag' ) ),
 392                                 'contribs', 'newbie' , 'newbie', $this->opts['contribs'] == 'newbie' ) . '<br />' .
 393                         Xml::radioLabel( wfMsgExt( 'sp-contributions-username', array( 'parsemag' ) ),
 394                                 'contribs' , 'user', 'user', $this->opts['contribs'] == 'user' ) . ' ' .
 395                         Html::input( 'target', $this->opts['target'], 'text', array(
 396                                 'size' => '20',
 397                                 'required' => ''
 398                         ) + ( $this->opts['target'] ? array() : array( 'autofocus' ) ) ) . ' '.
 399                         $fNS.
 400                         Xml::checkLabel( wfMsg( 'history-show-deleted' ),
 401                                 'deletedOnly', 'mw-show-deleted-only', $this->opts['deletedOnly'] ) . '<br />' .
 402                         Xml::tags( 'p', null, Xml::checkLabel( wfMsg( 'sp-contributions-toponly' ),
 403                                 'topOnly', 'mw-show-top-only', $this->opts['topOnly'] ) ) .
 404                         $fShowDiff.
 405                         ( $tagFilter ? Xml::tags( 'p', null, implode( '&#160;', $tagFilter ) ) : '' ) .
 406                         Html::rawElement( 'p', array( 'style' => 'white-space: nowrap' ),
 407                                 Xml::dateMenu( $this->opts['year'], $this->opts['month'] ) . ' ' .
 408                                 Xml::submitButton( wfMsg( 'sp-contributions-submit' ) )
 409                         ) . ' ';
 410                 $explain = wfMsgExt( 'sp-contributions-explain', 'parseinline' );
 411                 if( !wfEmptyMsg( 'sp-contributions-explain' ) ) {
 412                         $f .= "<p id='mw-sp-contributions-explain'>{$explain}</p>";
 413                 }
 414                 $f .= Xml::closeElement('fieldset' ) .
 415                         Xml::closeElement( 'form' );
 416                 return $f;
 417         }
 418
 419         /**
 420          * Output a subscription feed listing recent edits to this page.
 421          * @param $type String
 422          */
 423         protected function feed( $type ) {
 424                 global $wgFeed, $wgFeedClasses, $wgFeedLimit, $wgOut;
 425
 426                 if( !$wgFeed ) {
 427                         $wgOut->addWikiMsg( 'feed-unavailable' );
 428                         return;
 429                 }
 430
 431                 if( !isset( $wgFeedClasses[$type] ) ) {
 432                         $wgOut->addWikiMsg( 'feed-invalid' );
 433                         return;
 434                 }
 435
 436                 $feed = new $wgFeedClasses[$type](
 437                         $this->feedTitle(),
 438                         wfMsgExt( 'tagline', 'parsemag' ),
 439                         $this->getTitle()->getFullUrl() . "/" . urlencode($this->opts['target'])
 440                 );
 441
 442                 // Already valid title
 443                 $nt = Title::makeTitleSafe( NS_USER, $this->opts['target'] );
 444                 $target = $this->opts['target'] == 'newbies' ? 'newbies' : $nt->getText();
 445
 446                 $pager = new ContribsPager( array(
 447                         'target' => $target,
 448                         'namespace' => $this->opts['namespace'],
 449                         'year' => $this->opts['year'],
 450                         'month' => $this->opts['month'],
 451                         'tagFilter' => $this->opts['tagFilter'],
 452                         'deletedOnly' => $this->opts['deletedOnly'],
 453                         'topOnly' => $this->opts['topOnly'],
 454                         'showSizeDiff' => $this->opts['showSizeDiff'],
 455                 ) );
 456
 457                 $pager->mLimit = min( $this->opts['limit'], $wgFeedLimit );
 458
 459                 $feed->outHeader();
 460                 if( $pager->getNumRows() > 0 ) {
 461                         foreach ( $pager->mResult as $row ) {
 462                                 $feed->outItem( $this->feedItem( $row ) );
 463                         }
 464                 }
 465                 $feed->outFooter();
 466         }
 467
 468         protected function feedTitle() {
 469                 global $wgLanguageCode, $wgSitename;
 470                 $desc = $this->getDescription();
 471                 return "$wgSitename - $desc [$wgLanguageCode]";
 472         }
 473
 474         protected function feedItem( $row ) {
 475                 $title = Title::MakeTitle( intval( $row->page_namespace ), $row->page_title );
 476                 if( $title ) {
 477                         $date = $row->rev_timestamp;
 478                         $comments = $title->getTalkPage()->getFullURL();
 479                         $revision = Revision::newFromTitle( $title, $row->rev_id );
 480
 481                         return new FeedItem(
 482                                 $title->getPrefixedText(),
 483                                 $this->feedItemDesc( $revision ),
 484                                 $title->getFullURL(),
 485                                 $date,
 486                                 $this->feedItemAuthor( $revision ),
 487                                 $comments
 488                         );
 489                 } else {
 490                         return null;
 491                 }
 492         }
 493
 494         /**
 495          * @param $revision Revision
 496          * @return string
 497          */
 498         protected function feedItemAuthor( $revision ) {
 499                 return $revision->getUserText();
 500         }
 501
 502         /**
 503          * @param $revision Revision
 504          * @return string
 505          */
 506         protected function feedItemDesc( $revision ) {
 507                 if( $revision ) {
 508                         return '<p>' . htmlspecialchars( $revision->getUserText() ) . wfMsgForContent( 'colon-separator' ) .
 509                                 htmlspecialchars( FeedItem::stripComment( $revision->getComment() ) ) .
 510                                 "</p>\n<hr />\n<div>" .
 511                                 nl2br( htmlspecialchars( $revision->getText() ) ) . "</div>";
 512                 }
 513                 return '';
 514         }
 515 }
 516
 517 /**
 518  * Pager for Special:Contributions
 519  * @ingroup SpecialPage Pager
 520  */
 521 class ContribsPager extends ReverseChronologicalPager {
 522         public $mDefaultDirection = true;
 523         var $messages, $target;
 524         var $namespace = '', $mDb;
 525         var $preventClickjacking = false;
 526
 527         function __construct( $options ) {
 528                 parent::__construct();
 529
 530                 $msgs = array( 'uctop', 'diff', 'newarticle', 'rollbacklink', 'diff', 'hist', 'rev-delundel', 'pipe-separator' );
 531
 532                 foreach( $msgs as $msg ) {
 533                         $this->messages[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
 534                 }
 535
 536                 $this->target = isset( $options['target'] ) ? $options['target'] : '';
 537                 $this->namespace = isset( $options['namespace'] ) ? $options['namespace'] : '';
 538                 $this->tagFilter = isset( $options['tagFilter'] ) ? $options['tagFilter'] : false;
 539
 540                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 541                 $this->topOnly = !empty( $options['topOnly'] );
 542                 $this->showSizeDiff = !empty( $options['showSizeDiff'] );
 543
 544                 $year = isset( $options['year'] ) ? $options['year'] : false;
 545                 $month = isset( $options['month'] ) ? $options['month'] : false;
 546                 $this->getDateCond( $year, $month );
 547
 548                 $this->mDb = wfGetDB( DB_SLAVE, 'contributions' );
 549         }
 550
 551         function getDefaultQuery() {
 552                 $query = parent::getDefaultQuery();
 553                 $query['target'] = $this->target;
 554                 return $query;
 555         }
 556
 557         function getQueryInfo() {
 558                 global $wgUser, $wgMiserMode;
 559                 list( $tables, $index, $userCond, $join_cond ) = $this->getUserCond();
 560
 561                 $conds = array_merge( $userCond, $this->getNamespaceCond() );
 562                 // Paranoia: avoid brute force searches (bug 17342)
 563                 if( !$wgUser->isAllowed( 'deletedhistory' ) ) {
 564                         $conds[] = $this->mDb->bitAnd('rev_deleted',Revision::DELETED_USER) . ' = 0';
 565                 } else if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
 566                         $conds[] = $this->mDb->bitAnd('rev_deleted',Revision::SUPPRESSED_USER) .
 567                                 ' != ' . Revision::SUPPRESSED_USER;
 568                 }
 569                 $join_cond['page'] = array( 'INNER JOIN', 'page_id=rev_page' );
 570
 571                 $fields = array(
 572                         'page_namespace', 'page_title', 'page_is_new', 'page_latest', 'page_is_redirect',
 573                         'page_len','rev_id', 'rev_page', 'rev_text_id', 'rev_timestamp', 'rev_comment',
 574                         'rev_minor_edit', 'rev_user', 'rev_user_text', 'rev_parent_id', 'rev_deleted'
 575                 );
 576                 if ( $this->showSizeDiff && !$wgMiserMode ) {
 577                         $fields = array_merge( $fields,  array( 'rc_old_len', 'rc_new_len' ) );
 578                         array_unshift( $tables, 'recentchanges' );
 579                         $join_cond['recentchanges'] = array( 'INNER JOIN', "rev_id = rc_this_oldid" );
 580                 }
 581
 582                 $queryInfo = array(
 583                         'tables' => $tables,
 584                         'fields' => $fields,
 585                         'conds' => $conds,
 586                         'options' => array( 'USE INDEX' => array('revision' => $index) ),
 587                         'join_conds' => $join_cond
 588                 );
 589                 ChangeTags::modifyDisplayQuery(
 590                         $queryInfo['tables'],
 591                         $queryInfo['fields'],
 592                         $queryInfo['conds'],
 593                         $queryInfo['join_conds'],
 594                         $queryInfo['options'],
 595                         $this->tagFilter
 596                 );
 597
 598                 wfRunHooks( 'ContribsPager::getQueryInfo', array( &$this, &$queryInfo ) );
 599                 return $queryInfo;
 600         }
 601
 602         function getUserCond() {
 603                 $condition = array();
 604                 $join_conds = array();
 605
 606                 if( $this->target == 'newbies' ) {
 607                         $tables = array( 'user_groups', 'page', 'revision' );
 608                         $max = $this->mDb->selectField( 'user', 'max(user_id)', false, __METHOD__ );
 609                         $condition[] = 'rev_user >' . (int)($max - $max / 100);
 610                         $condition[] = 'ug_group IS NULL';
 611                         $index = 'user_timestamp';
 612                         # FIXME: other groups may have 'bot' rights
 613                         $join_conds['user_groups'] = array( 'LEFT JOIN', "ug_user = rev_user AND ug_group = 'bot'" );
 614                 } else {
 615                         $tables = array( 'page', 'revision' );
 616                         $condition['rev_user_text'] = $this->target;
 617                         $index = 'usertext_timestamp';
 618                 }
 619                 if( $this->deletedOnly ) {
 620                         $condition[] = "rev_deleted != '0'";
 621                 }
 622                 if( $this->topOnly ) {
 623                         $condition[] = "rev_id = page_latest";
 624                 }
 625                 return array( $tables, $index, $condition, $join_conds );
 626         }
 627
 628         function getNamespaceCond() {
 629                 global $wgMiserMode;
 630                 if( $this->namespace !== '' && !$wgMiserMode ) {
 631                         return array( 'page_namespace' => (int)$this->namespace );
 632                 } else {
 633                         return array();
 634                 }
 635         }
 636
 637         function getIndexField() {
 638                 return 'rev_timestamp';
 639         }
 640
 641         function getStartBody() {
 642                 return "<ul>\n";
 643         }
 644
 645         function getEndBody() {
 646                 return "</ul>\n";
 647         }
 648
 649         /**
 650          * Generates each row in the contributions list.
 651          *
 652          * Contributions which are marked "top" are currently on top of the history.
 653          * For these contributions, a [rollback] link is shown for users with roll-
 654          * back privileges. The rollback link restores the most recent version that
 655          * was not written by the target user.
 656          *
 657          * @todo This would probably look a lot nicer in a table.
 658          */
 659         function formatRow( $row ) {
 660                 global $wgUser, $wgLang, $wgContLang;
 661                 wfProfileIn( __METHOD__ );
 662
 663                 $sk = $this->getSkin();
 664                 $rev = new Revision( $row );
 665                 $classes = array();
 666
 667                 $page = Title::newFromRow( $row );
 668                 $link = $sk->link(
 669                         $page,
 670                         htmlspecialchars( $page->getPrefixedText() ),
 671                         array(),
 672                         $page->isRedirect() ? array( 'redirect' => 'no' ) : array()
 673                 );
 674                 # Mark current revisions
 675                 $topmarktext = '';
 676                 if( $row->rev_id == $row->page_latest ) {
 677                         $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 678                         # Add rollback link
 679                         if( !$row->page_is_new && $page->quickUserCan( 'rollback' )
 680                                 && $page->quickUserCan( 'edit' ) )
 681                         {
 682                                 $this->preventClickjacking();
 683                                 $topmarktext .= ' '.$sk->generateRollback( $rev );
 684                         }
 685                 }
 686                 # Is there a visible previous revision?
 687                 if( $rev->userCan( Revision::DELETED_TEXT ) && $rev->getParentId() !== 0 ) {
 688                         $difftext = $sk->linkKnown(
 689                                 $page,
 690                                 $this->messages['diff'],
 691                                 array(),
 692                                 array(
 693                                         'diff' => 'prev',
 694                                         'oldid' => $row->rev_id
 695                                 )
 696                         );
 697                 } else {
 698                         $difftext = $this->messages['diff'];
 699                 }
 700                 $histlink = $sk->linkKnown(
 701                         $page,
 702                         $this->messages['hist'],
 703                         array(),
 704                         array( 'action' => 'history' )
 705                 );
 706
 707                 $comment = $wgContLang->getDirMark() . $sk->revComment( $rev, false, true );
 708                 $date = $wgLang->timeanddate( wfTimestamp( TS_MW, $row->rev_timestamp ), true );
 709                 if( $rev->userCan( Revision::DELETED_TEXT ) ) {
 710                         $d = $sk->linkKnown(
 711                                 $page,
 712                                 htmlspecialchars($date),
 713                                 array(),
 714                                 array( 'oldid' => intval( $row->rev_id ) )
 715                         );
 716                 } else {
 717                         $d = htmlspecialchars( $date );
 718                 }
 719                 if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 720                         $d = '<span class="history-deleted">' . $d . '</span>';
 721                 }
 722
 723                 if( $this->target == 'newbies' ) {
 724                         $userlink = ' . . ' . $sk->userLink( $row->rev_user, $row->rev_user_text );
 725                         $userlink .= ' ' . wfMsg( 'parentheses', $sk->userTalkLink( $row->rev_user, $row->rev_user_text ) ) . ' ';
 726                 } else {
 727                         $userlink = '';
 728                 }
 729
 730                 if( $rev->getParentId() === 0 ) {
 731                         $nflag = ChangesList::flag( 'newpage' );
 732                 } else {
 733                         $nflag = '';
 734                 }
 735
 736                 if( $rev->isMinor() ) {
 737                         $mflag = ChangesList::flag( 'minor' );
 738                 } else {
 739                         $mflag = '';
 740                 }
 741
 742                 // Don't show useless link to people who cannot hide revisions
 743                 $canHide = $wgUser->isAllowed( 'deleterevision' );
 744                 if( $canHide || ($rev->getVisibility() && $wgUser->isAllowed('deletedhistory')) ) {
 745                         if( !$rev->userCan( Revision::DELETED_RESTRICTED ) ) {
 746                                 $del = $this->mSkin->revDeleteLinkDisabled( $canHide ); // revision was hidden from sysops
 747                         } else {
 748                                 $query = array(
 749                                         'type'   => 'revision',
 750                                         'target' => $page->getPrefixedDbkey(),
 751                                         'ids'    => $rev->getId()
 752                                 );
 753                                 $del = $this->mSkin->revDeleteLink( $query,
 754                                         $rev->isDeleted( Revision::DELETED_RESTRICTED ), $canHide );
 755                         }
 756                         $del .= ' ';
 757                 } else {
 758                         $del = '';
 759                 }
 760
 761                 $diffHistLinks = '(' . $difftext . $this->messages['pipe-separator'] . $histlink . ')';
 762
 763
 764                 $diffOut = ( $this->showSizeDiff ) ? ' . . '.ChangesList::showCharacterDifference( $row->rc_old_len, $row->rc_new_len ) : '';
 765
 766                 $ret = "{$del}{$d} {$diffHistLinks} {$nflag}{$mflag} {$link}{$diffOut}{$userlink} {$comment} {$topmarktext}";
 767
 768                 # Denote if username is redacted for this edit
 769                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 770                         $ret .= " <strong>" . wfMsgHtml('rev-deleted-user-contribs') . "</strong>";
 771                 }
 772
 773                 # Tags, if any.
 774                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $row->ts_tags, 'contributions' );
 775                 $classes = array_merge( $classes, $newClasses );
 776                 $ret .= " $tagSummary";
 777
 778                 // Let extensions add data
 779                 wfRunHooks( 'ContributionsLineEnding', array( &$this, &$ret, $row ) );
 780
 781                 $classes = implode( ' ', $classes );
 782                 $ret = "<li class=\"$classes\">$ret</li>\n";
 783                 wfProfileOut( __METHOD__ );
 784                 return $ret;
 785         }
 786
 787         /**
 788          * Get the Database object in use
 789          *
 790          * @return DatabaseBase
 791          */
 792         public function getDatabase() {
 793                 return $this->mDb;
 794         }
 795
 796         /**
 797          * Overwrite Pager function and return a helpful comment
 798          */
 799         function getSqlComment() {
 800                 if ( $this->namespace || $this->deletedOnly ) {
 801                         return 'contributions page filtered for namespace or RevisionDeleted edits'; // potentially slow, see CR r58153
 802                 } else {
 803                         return 'contributions page unfiltered';
 804                 }
 805         }
 806
 807         protected function preventClickjacking() {
 808                 $this->preventClickjacking = true;
 809         }
 810
 811         public function getPreventClickjacking() {
 812                 return $this->preventClickjacking;
 813         }
 814 }