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