includes/ChangesList.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  * Contain class to show various lists of change:
   5  * - what's link here
   6  * - related changes
   7  * - recent changes
   8  */
   9
  10 /**
  11  * @package MediaWiki
  12  */
  13 class ChangesList {
  14         # Called by history lists and recent changes
  15         #
  16
  17         /** @todo document */
  18         function ChangesList( &$skin ) {
  19                 $this->skin =& $skin;
  20                 $this->preCacheMessages();
  21         }
  22
  23         function newFromUser( &$user ) {
  24                 $sk =& $user->getSkin();
  25                 if( $user->getOption('usenewrc') ) {
  26                         return new EnhancedChangesList( $sk );
  27                 } else {
  28                         return new OldChangesList( $sk );
  29                 }
  30         }
  31
  32         /**
  33          * As we use the same small set of messages in various methods and that
  34          * they are called often, we call them once and save them in $this->message
  35          */
  36         function preCacheMessages() {
  37                 // Precache various messages
  38                 if( !isset( $this->message ) ) {
  39                         foreach( explode(' ', 'cur diff hist minoreditletter newpageletter last blocklink' ) as $msg ) {
  40                                 $this->message[$msg] = wfMsg( $msg );
  41                         }
  42                 }
  43         }
  44
  45
  46         /**
  47          * Returns the appropiate flags for new page, minor change and patrolling
  48          */
  49         function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&nbsp;' ) {
  50                 $f = $new ? '<span class="newpage">' . wfMsgHtml( 'newpageletter' ) . '</span>'
  51                                 : $nothing;
  52                 $f .= $minor ? '<span class="minor">' . wfMsgHtml( 'minoreditletter' ) . '</span>'
  53                                 : $nothing;
  54                 $f .= $patrolled ? '<span class="unpatrolled">!</span>' : $nothing;
  55                 return $f;
  56         }
  57
  58         /**
  59          * Returns text for the start of the tabular part of RC
  60          */
  61         function beginRecentChangesList() {
  62                 $this->rc_cache = array();
  63                 $this->rcMoveIndex = 0;
  64                 $this->rcCacheIndex = 0;
  65                 $this->lastdate = '';
  66                 $this->rclistOpen = false;
  67                 return '';
  68         }
  69
  70         /**
  71          * Returns text for the end of RC
  72          */
  73         function endRecentChangesList() {
  74                 if( $this->rclistOpen ) {
  75                         return "</ul>\n";
  76                 } else {
  77                         return '';
  78                 }
  79         }
  80
  81
  82         function insertMove( &$s, $rc ) {
  83                 # Diff
  84                 $s .= '(' . $this->message['diff'] . ') (';
  85                 # Hist
  86                 $s .= $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), $this->message['hist'], 'action=history' ) .
  87                         ') . . ';
  88
  89                 # "[[x]] moved to [[y]]"
  90                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
  91                 $s .= wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
  92                         $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
  93         }
  94
  95         function insertDateHeader(&$s, $rc_timestamp) {
  96                 global $wgLang;
  97
  98                 # Make date header if necessary
  99                 $date = $wgLang->date( $rc_timestamp, true, true );
 100                 $s = '';
 101                 if( $date != $this->lastdate ) {
 102                         if( '' != $this->lastdate ) {
 103                                 $s .= "</ul>\n";
 104                         }
 105                         $s .= '<h4>'.$date."</h4>\n<ul class=\"special\">";
 106                         $this->lastdate = $date;
 107                         $this->rclistOpen = true;
 108                 }
 109         }
 110
 111         function insertLog(&$s, $title, $logtype) {
 112                 $logname = LogPage::logName( $logtype );
 113                 $s .= '(' . $this->skin->makeKnownLinkObj($title, $logname ) . ')';
 114         }
 115
 116
 117         function insertDiffHist(&$s, &$rc, $unpatrolled) {
 118                 # Diff link
 119                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 120                         $diffLink = $this->message['diff'];
 121                 } else {
 122                         $rcidparam = $unpatrolled
 123                                 ? array( 'rcid' => $rc->mAttribs['rc_id'] )
 124                                 : array();
 125                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'],
 126                                 wfArrayToCGI( array(
 127                                         'curid' => $rc->mAttribs['rc_cur_id'],
 128                                         'diff'  => $rc->mAttribs['rc_this_oldid'],
 129                                         'oldid' => $rc->mAttribs['rc_last_oldid'] ),
 130                                         $rcidparam ),
 131                                 '', '', ' tabindex="'.$rc->counter.'"');
 132                 }
 133                 $s .= '('.$diffLink.') (';
 134
 135                 # History link
 136                 $s .= $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['hist'],
 137                         wfArrayToCGI( array(
 138                                 'curid' => $rc->mAttribs['rc_cur_id'],
 139                                 'action' => 'history' ) ) );
 140                 $s .= ') . . ';
 141         }
 142
 143         function insertArticleLink(&$s, &$rc, $unpatrolled, $watched) {
 144                 # Article link
 145                 # If it's a new article, there is no diff link, but if it hasn't been
 146                 # patrolled yet, we need to give users a way to do so
 147                 $params = ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW )
 148                         ? 'rcid='.$rc->mAttribs['rc_id']
 149                         : '';
 150                 $articlelink = ' '. $this->skin->makeKnownLinkObj( $rc->getTitle(), '', $params );
 151                 if($watched) $articlelink = '<strong>'.$articlelink.'</strong>';
 152
 153                 $s .= ' '.$articlelink;
 154         }
 155
 156         function insertTimestamp(&$s, &$rc) {
 157                 global $wgLang;
 158         # Timestamp
 159         $s .= '; ' . $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 160         }
 161
 162         /** Insert links to user page, user talk page and eventually a blocking link */
 163         function insertUserRelatedLinks(&$s, &$rc) {
 164                 $s .= $this->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 165                 $s .= $this->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 166         }
 167
 168         /** insert a formatted comment */
 169         function insertComment(&$s, &$rc) {
 170                 # Add comment
 171                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 172                         $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 173                 }
 174         }
 175
 176         /**
 177          * Check whether to enable RC-Patrol features
 178          * @return bool
 179          */
 180         function usePatrol() {
 181                 global $wgUseRCPatrol, $wgOnlySysopsCanPatrol, $wgUser;
 182                 return $wgUseRCPatrol && $wgUser->isLoggedIn() &&
 183                   ( !$wgOnlySysopsCanPatrol || $wgUser->isAllowed( 'patrol' ) );
 184         }
 185
 186         /**
 187          * Make user link (or user contributions for unregistered users)
 188          * @param int $userId
 189          * @param string $userText
 190          * @return string HTML fragment
 191          * @access private
 192          */
 193         function userLink( $userId, $userText ) {
 194                 $encName = htmlspecialchars( $userText );
 195                 if( $userId == 0 ) {
 196                         $contribsPage = Title::makeTitle( NS_SPECIAL, 'Contributions' );
 197                         return $this->skin->makeKnownLinkObj( $contribsPage,
 198                                 $encName, 'target=' . urlencode( $userText ) );
 199                 } else {
 200                         $userPage = Title::makeTitle( NS_USER, $userText );
 201                         return $this->skin->makeLinkObj( $userPage, $encName );
 202                 }
 203         }
 204
 205         /**
 206          * @param int $userId
 207          * @param string $userText
 208          * @return string HTML fragment with talk and/or block links
 209          * @access private
 210          */
 211         function userToolLinks( $userId, $userText ) {
 212                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans;
 213                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 214                 $blockable = ( $wgSysopUserBans || 0 == $userId );
 215
 216                 $items = array();
 217                 if( $talkable ) {
 218                         $items[] = $this->userTalkLink( $userId, $userText );
 219                 }
 220                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 221                         $items[] = $this->blockLink( $userId, $userText );
 222                 }
 223
 224                 if( $items ) {
 225                         return ' (' . implode( ' | ', $items ) . ')';
 226                 } else {
 227                         return '';
 228                 }
 229         }
 230
 231         /**
 232          * @param int $userId
 233          * @param string $userText
 234          * @return string HTML fragment with user talk link
 235          * @access private
 236          */
 237         function userTalkLink( $userId, $userText ) {
 238                 global $wgContLang;
 239                 $talkname = $wgContLang->getNsText( NS_TALK ); # use the shorter name
 240
 241                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 242                 $userTalkLink = $this->skin->makeLinkObj( $userTalkPage, $talkname );
 243                 return $userTalkLink;
 244         }
 245
 246         /**
 247          * @param int $userId
 248          * @param string $userText
 249          * @return string HTML fragment with block link
 250          * @access private
 251          */
 252         function blockLink( $userId, $userText ) {
 253                 $blockPage = Title::makeTitle( NS_SPECIAL, 'Blockip' );
 254                 $blockLink = $this->skin->makeKnownLinkObj( $blockPage,
 255                         $this->message['blocklink'], 'ip=' . urlencode( $userText ) );
 256                 return $blockLink;
 257         }
 258
 259 }
 260
 261
 262 /**
 263  * Generate a list of changes using the good old system (no javascript)
 264  */
 265 class OldChangesList extends ChangesList {
 266         /**
 267          * Format a line using the old system (aka without any javascript).
 268          */
 269         function recentChangesLine( &$rc, $watched = false ) {
 270                 global $wgLang, $wgContLang, $wgUser, $wgSysopUserBans;
 271
 272                 $fname = 'ChangesList::recentChangesLineOld';
 273                 wfProfileIn( $fname );
 274
 275
 276                 # Extract DB fields into local scope
 277                 extract( $rc->mAttribs );
 278                 $curIdEq = 'curid=' . $rc_cur_id;
 279
 280                 # Should patrol-related stuff be shown?
 281                 $unpatrolled = $this->usePatrol() && $rc_patrolled == 0;
 282
 283                 $this->insertDateHeader($s,$rc_timestamp);
 284
 285                 $s .= '<li>';
 286
 287                 // moved pages
 288                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 289                         $this->insertMove( $s, $rc );
 290                 // log entries
 291                 } elseif( $rc_namespace == NS_SPECIAL && preg_match( '!^Log/(.*)$!', $rc_title, $matches ) ) {
 292                         $this->insertLog($s, $rc->getTitle(), $matches[1]);
 293                 // all other stuff
 294                 } else {
 295                         wfProfileIn($fname.'-page');
 296
 297                         $this->insertDiffHist($s, $rc, $unpatrolled);
 298
 299                         # M, N and ! (minor, new and unpatrolled)
 300                         $s .= ' ' . $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $unpatrolled, '' );
 301                         $this->insertArticleLink($s, $rc, $unpatrolled, $watched);
 302
 303                         wfProfileOut($fname.'-page');
 304                 }
 305
 306                 wfProfileIn( $fname.'-rest' );
 307
 308                 $this->insertTimestamp($s,$rc);
 309                 $this->insertUserRelatedLinks($s,$rc);
 310                 $this->insertComment($s, $rc);
 311
 312                 if($rc->numberofWatchingusers > 0) {
 313                         $s .= ' ' . wfMsg('number_of_watching_users_RCview',  $wgContLang->formatNum($rc->numberofWatchingusers));
 314                 }
 315
 316                 $s .= "</li>\n";
 317
 318                 wfProfileOut( $fname.'-rest' );
 319
 320                 wfProfileOut( $fname );
 321                 return $s;
 322         }
 323 }
 324
 325
 326 /**
 327  * Generate a list of changes using an Enhanced system (use javascript).
 328  */
 329 class EnhancedChangesList extends ChangesList {
 330         /**
 331          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 332          */
 333         function recentChangesLine( &$baseRC, $watched = false ) {
 334                 global $wgLang, $wgContLang, $wgUser, $wgSysopUserBans;
 335
 336                 # Create a specialised object
 337                 $rc = RCCacheEntry::newFromParent( $baseRC );
 338
 339                 # Extract fields from DB into the function scope (rc_xxxx variables)
 340                 extract( $rc->mAttribs );
 341                 $curIdEq = 'curid=' . $rc_cur_id;
 342
 343                 # If it's a new day, add the headline and flush the cache
 344                 $date = $wgLang->date( $rc_timestamp, true);
 345                 $ret = '';
 346                 if( $date != $this->lastdate ) {
 347                         # Process current cache
 348                         $ret = $this->recentChangesBlock();
 349                         $this->rc_cache = array();
 350                         $ret .= "<h4>{$date}</h4>\n";
 351                         $this->lastdate = $date;
 352                 }
 353
 354                 # Should patrol-related stuff be shown?
 355                 if( $this->usePatrol() ) {
 356                         $rc->unpatrolled = !$rc_patrolled;
 357                 } else {
 358                         $rc->unpatrolled = false;
 359                 }
 360
 361                 # Make article link
 362                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 363                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 364                         $clink = wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 365                           $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 366                 } elseif( $rc_namespace == NS_SPECIAL && preg_match( '!^Log/(.*)$!', $rc_title, $matches ) ) {
 367                         # Log updates, etc
 368                         $logtype = $matches[1];
 369                         $logname = LogPage::logName( $logtype );
 370                         $clink = '(' . $this->skin->makeKnownLinkObj( $rc->getTitle(), $logname ) . ')';
 371                 } elseif( $rc->unpatrolled && $rc_type == RC_NEW ) {
 372                         # Unpatrolled new page, give rc_id in query
 373                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '', "rcid={$rc_id}" );
 374                 } else {
 375                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '' );
 376                 }
 377
 378                 $time = $wgContLang->time( $rc_timestamp, true, true );
 379                 $rc->watched = $watched;
 380                 $rc->link = $clink;
 381                 $rc->timestamp = $time;
 382                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 383
 384                 # Make "cur" and "diff" links
 385                 $titleObj = $rc->getTitle();
 386                 if( $rc->unpatrolled ) {
 387                         $rcIdQuery = "&rcid={$rc_id}";
 388                 } else {
 389                         $rcIdQuery = '';
 390                 }
 391                 $querycur = $curIdEq."&diff=0&oldid=$rc_this_oldid";
 392                 $querydiff = $curIdEq."&diff=$rc_this_oldid&oldid=$rc_last_oldid$rcIdQuery";
 393                 $aprops = ' tabindex="'.$baseRC->counter.'"';
 394                 $curLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['cur'], $querycur, '' ,'', $aprops );
 395                 if( $rc_type == RC_NEW || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 396                         if( $rc_type != RC_NEW ) {
 397                                 $curLink = $this->message['cur'];
 398                         }
 399                         $diffLink = $this->message['diff'];
 400                 } else {
 401                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'], $querydiff, '' ,'', $aprops );
 402                 }
 403
 404                 # Make "last" link
 405                 if( $rc_last_oldid == 0 || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 406                         $lastLink = $this->message['last'];
 407                 } else {
 408                         $lastLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['last'],
 409                           $curIdEq.'&diff='.$rc_this_oldid.'&oldid='.$rc_last_oldid . $rcIdQuery );
 410                 }
 411
 412                 $rc->userlink = $this->userLink( $rc_user, $rc_user_text );
 413
 414                 $rc->lastlink = $lastLink;
 415                 $rc->curlink  = $curLink;
 416                 $rc->difflink = $diffLink;
 417
 418                 $rc->usertalklink = $this->userToolLinks( $rc_user, $rc_user_text );
 419
 420                 # Put accumulated information into the cache, for later display
 421                 # Page moves go on their own line
 422                 $title = $rc->getTitle();
 423                 $secureName = $title->getPrefixedDBkey();
 424                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 425                         # Use an @ character to prevent collision with page names
 426                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 427                 } else {
 428                         if( !isset ( $this->rc_cache[$secureName] ) ) {
 429                                 $this->rc_cache[$secureName] = array();
 430                         }
 431                         array_push( $this->rc_cache[$secureName], $rc );
 432                 }
 433                 return $ret;
 434         }
 435
 436         /**
 437          * Enhanced RC group
 438          */
 439         function recentChangesBlockGroup( $block ) {
 440                 $r = '';
 441
 442                 # Collate list of users
 443                 $isnew = false;
 444                 $unpatrolled = false;
 445                 $userlinks = array();
 446                 foreach( $block as $rcObj ) {
 447                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 448                         $newid = $rcObj->mAttribs['rc_this_oldid'];
 449                         if( $rcObj->mAttribs['rc_new'] ) {
 450                                 $isnew = true;
 451                         }
 452                         $u = $rcObj->userlink;
 453                         if( !isset( $userlinks[$u] ) ) {
 454                                 $userlinks[$u] = 0;
 455                         }
 456                         if( $rcObj->unpatrolled ) {
 457                                 $unpatrolled = true;
 458                         }
 459                         $userlinks[$u]++;
 460                 }
 461
 462                 # Sort the list and convert to text
 463                 krsort( $userlinks );
 464                 asort( $userlinks );
 465                 $users = array();
 466                 foreach( $userlinks as $userlink => $count) {
 467                         $text = $userlink;
 468                         if( $count > 1 ) {
 469                                 $text .= ' ('.$count.'&times;)';
 470                         }
 471                         array_push( $users, $text );
 472                 }
 473
 474                 $users = ' <span class="changedby">['.implode('; ',$users).']</span>';
 475
 476                 # Arrow
 477                 $rci = 'RCI'.$this->rcCacheIndex;
 478                 $rcl = 'RCL'.$this->rcCacheIndex;
 479                 $rcm = 'RCM'.$this->rcCacheIndex;
 480                 $toggleLink = "javascript:toggleVisibility('$rci','$rcm','$rcl')";
 481                 $tl  = '<span id="'.$rcm.'"><a href="'.$toggleLink.'">' . $this->sideArrow() . '</a></span>';
 482                 $tl .= '<span id="'.$rcl.'" style="display:none"><a href="'.$toggleLink.'">' . $this->downArrow() . '</a></span>';
 483                 $r .= $tl;
 484
 485                 # Main line
 486                 $r .= '<tt>';
 487                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled );
 488
 489                 # Timestamp
 490                 $r .= ' '.$block[0]->timestamp.' ';
 491                 $r .= '</tt>';
 492
 493                 # Article link
 494                 $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 495
 496                 $curIdEq = 'curid=' . $block[0]->mAttribs['rc_cur_id'];
 497                 $currentRevision = $block[0]->mAttribs['rc_this_oldid'];
 498                 if( $block[0]->mAttribs['rc_type'] != RC_LOG ) {
 499                         # Changes
 500                         $r .= ' ('.count($block).' ';
 501                         if( $isnew ) {
 502                                 $r .= wfMsg('changes');
 503                         } else {
 504                                 $r .= $this->skin->makeKnownLinkObj( $block[0]->getTitle(), wfMsg('changes'),
 505                                         $curIdEq."&diff=$currentRevision&oldid=$oldid" );
 506                         }
 507                         $r .= '; ';
 508
 509                         # History
 510                         $r .= $this->skin->makeKnownLinkObj( $block[0]->getTitle(), wfMsg( 'history' ), $curIdEq.'&action=history' );
 511                         $r .= ')';
 512                 }
 513
 514                 $r .= $users;
 515
 516                 if($block[0]->numberofWatchingusers > 0) {
 517                         $r .= wfMsg('number_of_watching_users_RCview',  $wgContLang->formatNum($block[0]->numberofWatchingusers));
 518                 }
 519                 $r .= "<br />\n";
 520
 521                 # Sub-entries
 522                 $r .= '<div id="'.$rci.'" style="display:none">';
 523                 foreach( $block as $rcObj ) {
 524                         # Get rc_xxxx variables
 525                         extract( $rcObj->mAttribs );
 526
 527                         $r .= $this->spacerArrow();
 528                         $r .= '<tt>&nbsp; &nbsp; &nbsp; &nbsp;';
 529                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled );
 530                         $r .= '&nbsp;</tt>';
 531
 532                         $o = '';
 533                         if( $rc_this_oldid != 0 ) {
 534                                 $o = 'oldid='.$rc_this_oldid;
 535                         }
 536                         if( $rc_type == RC_LOG ) {
 537                                 $link = $rcObj->timestamp;
 538                         } else {
 539                                 $link = $this->skin->makeKnownLinkObj( $rcObj->getTitle(), $rcObj->timestamp, $curIdEq.'&'.$o );
 540                         }
 541                         $link = '<tt>'.$link.'</tt>';
 542
 543                         $r .= $link;
 544                         $r .= ' (';
 545                         $r .= $rcObj->curlink;
 546                         $r .= '; ';
 547                         $r .= $rcObj->lastlink;
 548                         $r .= ') . . '.$rcObj->userlink;
 549                         $r .= $rcObj->usertalklink;
 550                         $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 551                         $r .= "<br />\n";
 552                 }
 553                 $r .= "</div>\n";
 554
 555                 $this->rcCacheIndex++;
 556                 return $r;
 557         }
 558
 559         function maybeWatchedLink( $link, $watched=false ) {
 560                 if( $watched ) {
 561                         // FIXME: css style might be more appropriate
 562                         return '<strong>' . $link . '</strong>';
 563                 } else {
 564                         return $link;
 565                 }
 566         }
 567
 568         /**
 569          * Generate HTML for an arrow or placeholder graphic
 570          * @param string $dir one of '', 'd', 'l', 'r'
 571          * @param string $alt text
 572          * @return string HTML <img> tag
 573          * @access private
 574          */
 575         function arrow( $dir, $alt='' ) {
 576                 global $wgStylePath;
 577                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 578                 $encAlt = htmlspecialchars( $alt );
 579                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" />";
 580         }
 581
 582         /**
 583          * Generate HTML for a right- or left-facing arrow,
 584          * depending on language direction.
 585          * @return string HTML <img> tag
 586          * @access private
 587          */
 588         function sideArrow() {
 589                 global $wgContLang;
 590                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
 591                 return $this->arrow( $dir, '+' );
 592         }
 593
 594         /**
 595          * Generate HTML for a down-facing arrow
 596          * depending on language direction.
 597          * @return string HTML <img> tag
 598          * @access private
 599          */
 600         function downArrow() {
 601                 return $this->arrow( 'd', '-' );
 602         }
 603
 604         /**
 605          * Generate HTML for a spacer image
 606          * @return string HTML <img> tag
 607          * @access private
 608          */
 609         function spacerArrow() {
 610                 return $this->arrow( '', ' ' );
 611         }
 612
 613         /**
 614          * Enhanced RC ungrouped line.
 615          * @return string a HTML formated line (generated using $r)
 616          */
 617         function recentChangesBlockLine( $rcObj ) {
 618                 global $wgContLang;
 619
 620                 # Get rc_xxxx variables
 621                 extract( $rcObj->mAttribs );
 622                 $curIdEq = 'curid='.$rc_cur_id;
 623
 624                 $r = '';
 625
 626                 # Spacer image
 627                 $r .= $this->spacerArrow();
 628
 629                 # Flag and Timestamp
 630                 $r .= '<tt>';
 631
 632                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 633                         $r .= '&nbsp;&nbsp;&nbsp;';
 634                 } else {
 635                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled );
 636                 }
 637                 $r .= ' '.$rcObj->timestamp.' </tt>';
 638
 639                 # Article link
 640                 $r .= $this->maybeWatchedLink( $rcObj->link, $rcObj->watched );
 641
 642                 # Diff
 643                 $r .= ' ('. $rcObj->difflink .'; ';
 644
 645                 # Hist
 646                 $r .= $this->skin->makeKnownLinkObj( $rcObj->getTitle(), wfMsg( 'hist' ), $curIdEq.'&action=history' );
 647
 648                 # User/talk
 649                 $r .= ') . . '.$rcObj->userlink . $rcObj->usertalklink;
 650
 651                 # Comment
 652                 if( $rc_type != RC_MOVE && $rc_type != RC_MOVE_OVER_REDIRECT ) {
 653                         $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 654                 }
 655
 656                 if( $rcObj->numberofWatchingusers > 0 ) {
 657                         $r .= wfMsg('number_of_watching_users_RCview', $wgContLang->formatNum($rcObj->numberofWatchingusers));
 658                 }
 659
 660                 $r .= "<br />\n";
 661                 return $r;
 662         }
 663
 664         /**
 665          * If enhanced RC is in use, this function takes the previously cached
 666          * RC lines, arranges them, and outputs the HTML
 667          */
 668         function recentChangesBlock() {
 669                 if( count ( $this->rc_cache ) == 0 ) {
 670                         return '';
 671                 }
 672                 $blockOut = '';
 673                 foreach( $this->rc_cache as $secureName => $block ) {
 674                         if( count( $block ) < 2 ) {
 675                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 676                         } else {
 677                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 678                         }
 679                 }
 680
 681                 return '<div>'.$blockOut.'</div>';
 682         }
 683
 684         /**
 685          * Returns text for the end of RC
 686          * If enhanced RC is in use, returns pretty much all the text
 687          */
 688         function endRecentChangesList() {
 689                 return $this->recentChangesBlock() . parent::endRecentChangesList();
 690         }
 691
 692 }
 693 ?>