includes/ChangesList.php

   1 <?php
   2
   3 /**
   4  * @todo document
   5  */
   6 class RCCacheEntry extends RecentChange
   7 {
   8         var $secureName, $link;
   9         var $curlink , $difflink, $lastlink , $usertalklink , $versionlink ;
  10         var $userlink, $timestamp, $watched;
  11
  12         static function newFromParent( $rc ) {
  13                 $rc2 = new RCCacheEntry;
  14                 $rc2->mAttribs = $rc->mAttribs;
  15                 $rc2->mExtra = $rc->mExtra;
  16                 return $rc2;
  17         }
  18 } ;
  19
  20 /**
  21  * Class to show various lists of changes:
  22  * - what links here
  23  * - related changes
  24  * - recent changes
  25  */
  26 class ChangesList {
  27         # Called by history lists and recent changes
  28         #
  29
  30         /** @todo document */
  31         function __construct( &$skin ) {
  32                 $this->skin =& $skin;
  33                 $this->preCacheMessages();
  34         }
  35
  36         /**
  37          * Fetch an appropriate changes list class for the specified user
  38          * Some users might want to use an enhanced list format, for instance
  39          *
  40          * @param $user User to fetch the list class for
  41          * @return ChangesList derivative
  42          */
  43         public static function newFromUser( &$user ) {
  44                 $sk = $user->getSkin();
  45                 $list = NULL;
  46                 if( wfRunHooks( 'FetchChangesList', array( &$user, &$sk, &$list ) ) ) {
  47                         return $user->getOption( 'usenewrc' ) ? new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  48                 } else {
  49                         return $list;
  50                 }
  51         }
  52
  53         /**
  54          * As we use the same small set of messages in various methods and that
  55          * they are called often, we call them once and save them in $this->message
  56          */
  57         function preCacheMessages() {
  58                 // Precache various messages
  59                 if( !isset( $this->message ) ) {
  60                         foreach( explode(' ', 'cur diff hist minoreditletter newpageletter last '.
  61                                 'blocklink history boteditletter semicolon-separator' ) as $msg ) {
  62                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
  63                         }
  64                 }
  65         }
  66
  67
  68         /**
  69          * Returns the appropriate flags for new page, minor change and patrolling
  70          */
  71         function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&nbsp;', $bot = false ) {
  72                 $f = $new ? '<span class="newpage">' . $this->message['newpageletter'] . '</span>'
  73                                 : $nothing;
  74                 $f .= $minor ? '<span class="minor">' . $this->message['minoreditletter'] . '</span>'
  75                                 : $nothing;
  76                 $f .= $bot ? '<span class="bot">' . $this->message['boteditletter'] . '</span>' : $nothing;
  77                 $f .= $patrolled ? '<span class="unpatrolled">!</span>' : $nothing;
  78                 return $f;
  79         }
  80
  81         /**
  82          * Returns text for the start of the tabular part of RC
  83          */
  84         function beginRecentChangesList() {
  85                 $this->rc_cache = array();
  86                 $this->rcMoveIndex = 0;
  87                 $this->rcCacheIndex = 0;
  88                 $this->lastdate = '';
  89                 $this->rclistOpen = false;
  90                 return '';
  91         }
  92
  93         /**
  94          * Returns text for the end of RC
  95          */
  96         function endRecentChangesList() {
  97                 if( $this->rclistOpen ) {
  98                         return "</ul>\n";
  99                 } else {
 100                         return '';
 101                 }
 102         }
 103
 104
 105         function insertMove( &$s, $rc ) {
 106                 # Diff
 107                 $s .= '(' . $this->message['diff'] . ') (';
 108                 # Hist
 109                 $s .= $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), $this->message['hist'], 'action=history' ) .
 110                         ') . . ';
 111
 112                 # "[[x]] moved to [[y]]"
 113                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 114                 $s .= wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 115                         $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 116         }
 117
 118         function insertDateHeader(&$s, $rc_timestamp) {
 119                 global $wgLang;
 120
 121                 # Make date header if necessary
 122                 $date = $wgLang->date( $rc_timestamp, true, true );
 123                 $s = '';
 124                 if( $date != $this->lastdate ) {
 125                         if( '' != $this->lastdate ) {
 126                                 $s .= "</ul>\n";
 127                         }
 128                         $s .= '<h4>'.$date."</h4>\n<ul class=\"special\">";
 129                         $this->lastdate = $date;
 130                         $this->rclistOpen = true;
 131                 }
 132         }
 133
 134         function insertLog(&$s, $title, $logtype) {
 135                 $logname = LogPage::logName( $logtype );
 136                 $s .= '(' . $this->skin->makeKnownLinkObj($title, $logname ) . ')';
 137         }
 138
 139
 140         function insertDiffHist(&$s, &$rc, $unpatrolled) {
 141                 # Diff link
 142                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 143                         $diffLink = $this->message['diff'];
 144                 } else {
 145                         $rcidparam = $unpatrolled
 146                                 ? array( 'rcid' => $rc->mAttribs['rc_id'] )
 147                                 : array();
 148                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'],
 149                                 wfArrayToCGI( array(
 150                                         'curid' => $rc->mAttribs['rc_cur_id'],
 151                                         'diff'  => $rc->mAttribs['rc_this_oldid'],
 152                                         'oldid' => $rc->mAttribs['rc_last_oldid'] ),
 153                                         $rcidparam ),
 154                                 '', '', ' tabindex="'.$rc->counter.'"');
 155                 }
 156                 $s .= '('.$diffLink.') (';
 157
 158                 # History link
 159                 $s .= $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['hist'],
 160                         wfArrayToCGI( array(
 161                                 'curid' => $rc->mAttribs['rc_cur_id'],
 162                                 'action' => 'history' ) ) );
 163                 $s .= ') . . ';
 164         }
 165
 166         function insertArticleLink(&$s, &$rc, $unpatrolled, $watched) {
 167                 # Article link
 168                 # If it's a new article, there is no diff link, but if it hasn't been
 169                 # patrolled yet, we need to give users a way to do so
 170                 $params = ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW )
 171                         ? 'rcid='.$rc->mAttribs['rc_id']
 172                         : '';
 173                 $articlelink = ' '. $this->skin->makeKnownLinkObj( $rc->getTitle(), '', $params );
 174                 if( $watched )
 175                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 176                 global $wgContLang;
 177                 $articlelink .= $wgContLang->getDirMark();
 178
 179                 wfRunHooks('ChangesListInsertArticleLink',
 180                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched));
 181
 182                 $s .= ' '.$articlelink;
 183         }
 184
 185         function insertTimestamp(&$s, $rc) {
 186                 global $wgLang;
 187                 # Timestamp
 188                 $s .= $this->message['semicolon-separator'] . ' ' . $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 189         }
 190
 191         /** Insert links to user page, user talk page and eventually a blocking link */
 192         function insertUserRelatedLinks(&$s, &$rc) {
 193                 $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 194                 $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 195         }
 196
 197         /** insert a formatted comment */
 198         function insertComment(&$s, &$rc) {
 199                 # Add comment
 200                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 201                         $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 202                 }
 203         }
 204
 205         /**
 206          * Check whether to enable recent changes patrol features
 207          * @return bool
 208          */
 209         function usePatrol() {
 210                 global $wgUseRCPatrol, $wgUser;
 211                 return( $wgUseRCPatrol && ($wgUser->isAllowed('patrol') || $wgUser->isAllowed('patrolmarks')) );
 212         }
 213
 214         /**
 215          * Returns the string which indicates the number of watching users
 216          */
 217         function numberofWatchingusers( $count ) {
 218                 global $wgLang;
 219                 static $cache = array();
 220                 if ( $count > 0 ) {
 221                         if ( !isset( $cache[$count] ) ) {
 222                                 $cache[$count] = wfMsgExt('number_of_watching_users_RCview',
 223                                         array('parsemag', 'escape'), $wgLang->formatNum($count));
 224                         }
 225                         return $cache[$count];
 226                 } else {
 227                         return '';
 228                 }
 229         }
 230 }
 231
 232
 233 /**
 234  * Generate a list of changes using the good old system (no javascript)
 235  */
 236 class OldChangesList extends ChangesList {
 237         /**
 238          * Format a line using the old system (aka without any javascript).
 239          */
 240         function recentChangesLine( &$rc, $watched = false ) {
 241                 global $wgContLang, $wgRCShowChangedSize;
 242
 243                 $fname = 'ChangesList::recentChangesLineOld';
 244                 wfProfileIn( $fname );
 245
 246                 # Extract DB fields into local scope
 247                 // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 248                 extract( $rc->mAttribs );
 249
 250                 # Should patrol-related stuff be shown?
 251                 $unpatrolled = $this->usePatrol() && $rc_patrolled == 0;
 252
 253                 $this->insertDateHeader($s,$rc_timestamp);
 254
 255                 $s .= '<li>';
 256
 257                 // moved pages
 258                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 259                         $this->insertMove( $s, $rc );
 260                 // log entries
 261                 } elseif ( $rc_namespace == NS_SPECIAL ) {
 262                         list( $specialName, $specialSubpage ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 263                         if ( $specialName == 'Log' ) {
 264                                 $this->insertLog( $s, $rc->getTitle(), $specialSubpage );
 265                         } else {
 266                                 wfDebug( "Unexpected special page in recentchanges\n" );
 267                         }
 268                 // all other stuff
 269                 } else {
 270                         wfProfileIn($fname.'-page');
 271
 272                         $this->insertDiffHist($s, $rc, $unpatrolled);
 273
 274                         # M, N, b and ! (minor, new, bot and unpatrolled)
 275                         $s .= ' ' . $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $unpatrolled, '', $rc_bot );
 276                         $this->insertArticleLink($s, $rc, $unpatrolled, $watched);
 277
 278                         wfProfileOut($fname.'-page');
 279                 }
 280
 281                 wfProfileIn( $fname.'-rest' );
 282
 283                 $this->insertTimestamp($s,$rc);
 284
 285                 if( $wgRCShowChangedSize ) {
 286                         $s .= ( $rc->getCharacterDifference() == '' ? '' : $rc->getCharacterDifference() . ' . . ' );
 287                 }
 288
 289                 $this->insertUserRelatedLinks($s,$rc);
 290                 $this->insertComment($s, $rc);
 291
 292                 $s .=  rtrim(' ' . $this->numberofWatchingusers($rc->numberofWatchingusers));
 293
 294                 $s .= "</li>\n";
 295
 296                 wfProfileOut( $fname.'-rest' );
 297
 298                 wfProfileOut( $fname );
 299                 return $s;
 300         }
 301 }
 302
 303
 304 /**
 305  * Generate a list of changes using an Enhanced system (use javascript).
 306  */
 307 class EnhancedChangesList extends ChangesList {
 308         /**
 309          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 310          */
 311         function recentChangesLine( &$baseRC, $watched = false ) {
 312                 global $wgLang, $wgContLang;
 313
 314                 # Create a specialised object
 315                 $rc = RCCacheEntry::newFromParent( $baseRC );
 316
 317                 # Extract fields from DB into the function scope (rc_xxxx variables)
 318                 // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 319                 extract( $rc->mAttribs );
 320                 $curIdEq = 'curid=' . $rc_cur_id;
 321
 322                 # If it's a new day, add the headline and flush the cache
 323                 $date = $wgLang->date( $rc_timestamp, true);
 324                 $ret = '';
 325                 if( $date != $this->lastdate ) {
 326                         # Process current cache
 327                         $ret = $this->recentChangesBlock();
 328                         $this->rc_cache = array();
 329                         $ret .= "<h4>{$date}</h4>\n";
 330                         $this->lastdate = $date;
 331                 }
 332
 333                 # Should patrol-related stuff be shown?
 334                 if( $this->usePatrol() ) {
 335                         $rc->unpatrolled = !$rc_patrolled;
 336                 } else {
 337                         $rc->unpatrolled = false;
 338                 }
 339
 340                 # Make article link
 341                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 342                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 343                         $clink = wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 344                           $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 345                 } elseif( $rc_namespace == NS_SPECIAL ) {
 346                         list( $specialName, $logtype ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 347                         if ( $specialName == 'Log' ) {
 348                                 # Log updates, etc
 349                                 $logname = LogPage::logName( $logtype );
 350                                 $clink = '(' . $this->skin->makeKnownLinkObj( $rc->getTitle(), $logname ) . ')';
 351                         } else {
 352                                 wfDebug( "Unexpected special page in recentchanges\n" );
 353                                 $clink = '';
 354                         }
 355                 } elseif( $rc->unpatrolled && $rc_type == RC_NEW ) {
 356                         # Unpatrolled new page, give rc_id in query
 357                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '', "rcid={$rc_id}" );
 358                 } else {
 359                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '' );
 360                 }
 361
 362                 $time = $wgContLang->time( $rc_timestamp, true, true );
 363                 $rc->watched = $watched;
 364                 $rc->link = $clink;
 365                 $rc->timestamp = $time;
 366                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 367
 368                 # Make "cur" and "diff" links
 369                 if( $rc->unpatrolled ) {
 370                         $rcIdQuery = "&rcid={$rc_id}";
 371                 } else {
 372                         $rcIdQuery = '';
 373                 }
 374                 $querycur = $curIdEq."&diff=0&oldid=$rc_this_oldid";
 375                 $querydiff = $curIdEq."&diff=$rc_this_oldid&oldid=$rc_last_oldid$rcIdQuery";
 376                 $aprops = ' tabindex="'.$baseRC->counter.'"';
 377                 $curLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['cur'], $querycur, '' ,'', $aprops );
 378                 if( $rc_type == RC_NEW || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 379                         if( $rc_type != RC_NEW ) {
 380                                 $curLink = $this->message['cur'];
 381                         }
 382                         $diffLink = $this->message['diff'];
 383                 } else {
 384                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'], $querydiff, '' ,'', $aprops );
 385                 }
 386
 387                 # Make "last" link
 388                 if( $rc_last_oldid == 0 || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 389                         $lastLink = $this->message['last'];
 390                 } else {
 391                         $lastLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['last'],
 392                           $curIdEq.'&diff='.$rc_this_oldid.'&oldid='.$rc_last_oldid . $rcIdQuery );
 393                 }
 394
 395                 $rc->userlink = $this->skin->userLink( $rc_user, $rc_user_text );
 396
 397                 $rc->lastlink = $lastLink;
 398                 $rc->curlink  = $curLink;
 399                 $rc->difflink = $diffLink;
 400
 401                 $rc->usertalklink = $this->skin->userToolLinks( $rc_user, $rc_user_text );
 402
 403                 # Put accumulated information into the cache, for later display
 404                 # Page moves go on their own line
 405                 $title = $rc->getTitle();
 406                 $secureName = $title->getPrefixedDBkey();
 407                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 408                         # Use an @ character to prevent collision with page names
 409                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 410                 } else {
 411                         if( !isset ( $this->rc_cache[$secureName] ) ) {
 412                                 $this->rc_cache[$secureName] = array();
 413                         }
 414                         array_push( $this->rc_cache[$secureName], $rc );
 415                 }
 416                 return $ret;
 417         }
 418
 419         /**
 420          * Enhanced RC group
 421          */
 422         function recentChangesBlockGroup( $block ) {
 423                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 424                 $r = '';
 425
 426                 # Collate list of users
 427                 $isnew = false;
 428                 $unpatrolled = false;
 429                 $userlinks = array();
 430                 foreach( $block as $rcObj ) {
 431                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 432                         if( $rcObj->mAttribs['rc_new'] ) {
 433                                 $isnew = true;
 434                         }
 435                         $u = $rcObj->userlink;
 436                         if( !isset( $userlinks[$u] ) ) {
 437                                 $userlinks[$u] = 0;
 438                         }
 439                         if( $rcObj->unpatrolled ) {
 440                                 $unpatrolled = true;
 441                         }
 442                         $bot = $rcObj->mAttribs['rc_bot'];
 443                         $userlinks[$u]++;
 444                 }
 445
 446                 # Sort the list and convert to text
 447                 krsort( $userlinks );
 448                 asort( $userlinks );
 449                 $users = array();
 450                 foreach( $userlinks as $userlink => $count) {
 451                         $text = $userlink;
 452                         $text .= $wgContLang->getDirMark();
 453                         if( $count > 1 ) {
 454                                 $text .= ' ('.$count.'&times;)';
 455                         }
 456                         array_push( $users, $text );
 457                 }
 458
 459                 $users = ' <span class="changedby">[' . implode( $this->message['semicolon-separator'] . ' ', $users ) . ']</span>';
 460
 461                 # Arrow
 462                 $rci = 'RCI'.$this->rcCacheIndex;
 463                 $rcl = 'RCL'.$this->rcCacheIndex;
 464                 $rcm = 'RCM'.$this->rcCacheIndex;
 465                 $toggleLink = "javascript:toggleVisibility('$rci','$rcm','$rcl')";
 466                 $tl  = '<span id="'.$rcm.'"><a href="'.$toggleLink.'">' . $this->sideArrow() . '</a></span>';
 467                 $tl .= '<span id="'.$rcl.'" style="display:none"><a href="'.$toggleLink.'">' . $this->downArrow() . '</a></span>';
 468                 $r .= $tl;
 469
 470                 # Main line
 471                 $r .= '<tt>';
 472                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled, '&nbsp;', $bot );
 473
 474                 # Timestamp
 475                 $r .= ' '.$block[0]->timestamp.' </tt>';
 476
 477                 # Article link
 478                 $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 479                 $r .= $wgContLang->getDirMark();
 480
 481                 $curIdEq = 'curid=' . $block[0]->mAttribs['rc_cur_id'];
 482                 $currentRevision = $block[0]->mAttribs['rc_this_oldid'];
 483                 if( $block[0]->mAttribs['rc_type'] != RC_LOG ) {
 484                         # Changes
 485
 486                         $n = count($block);
 487                         static $nchanges = array();
 488                         if ( !isset( $nchanges[$n] ) ) {
 489                                 $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape'),
 490                                         $wgLang->formatNum( $n ) );
 491                         }
 492
 493                         $r .= ' (';
 494
 495                         if( $isnew ) {
 496                                 $r .= $nchanges[$n];
 497                         } else {
 498                                 $r .= $this->skin->makeKnownLinkObj( $block[0]->getTitle(),
 499                                         $nchanges[$n], $curIdEq."&diff=$currentRevision&oldid=$oldid" );
 500                         }
 501
 502                         $r .= ') . . ';
 503
 504                         if( $wgRCShowChangedSize ) {
 505                                 # Character difference
 506                                 $chardiff = $rcObj->getCharacterDifference( $block[ count( $block ) - 1 ]->mAttribs['rc_old_len'],
 507                                                 $block[0]->mAttribs['rc_new_len'] );
 508                                 if( $chardiff == '' ) {
 509                                         $r .= ' (';
 510                                 } else {
 511                                         $r .= ' ' . $chardiff. ' . . ';
 512                                 }
 513                         }
 514
 515                         # History
 516                         $r .= '(' . $this->skin->makeKnownLinkObj( $block[0]->getTitle(),
 517                                 $this->message['history'], $curIdEq.'&action=history' );
 518                         $r .= ')';
 519                 }
 520
 521                 $r .= $users;
 522
 523                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 524                 $r .= "<br />\n";
 525
 526                 # Sub-entries
 527                 $r .= '<div id="'.$rci.'" style="display:none">';
 528                 foreach( $block as $rcObj ) {
 529                         # Get rc_xxxx variables
 530                         // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 531                         extract( $rcObj->mAttribs );
 532
 533                         $r .= $this->spacerArrow();
 534                         $r .= '<tt>&nbsp; &nbsp; &nbsp; &nbsp;';
 535                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled, '&nbsp;', $rc_bot );
 536                         $r .= '&nbsp;</tt>';
 537
 538                         $o = '';
 539                         if( $rc_this_oldid != 0 ) {
 540                                 $o = 'oldid='.$rc_this_oldid;
 541                         }
 542                         if( $rc_type == RC_LOG ) {
 543                                 $link = $rcObj->timestamp;
 544                         } else {
 545                                 $link = $this->skin->makeKnownLinkObj( $rcObj->getTitle(), $rcObj->timestamp, $curIdEq.'&'.$o );
 546                         }
 547                         $link = '<tt>'.$link.'</tt>';
 548
 549                         $r .= $link;
 550                         $r .= ' (';
 551                         $r .= $rcObj->curlink;
 552                         $r .= $this->message['semicolon-separator'] . ' ';
 553                         $r .= $rcObj->lastlink;
 554                         $r .= ') . . ';
 555
 556                         # Character diff
 557                         if( $wgRCShowChangedSize ) {
 558                                 $r .= ( $rcObj->getCharacterDifference() == '' ? '' : $rcObj->getCharacterDifference() . ' . . ' ) ;
 559                         }
 560
 561                         $r .= $rcObj->userlink;
 562                         $r .= $rcObj->usertalklink;
 563                         $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 564                         $r .= "<br />\n";
 565                 }
 566                 $r .= "</div>\n";
 567
 568                 $this->rcCacheIndex++;
 569                 return $r;
 570         }
 571
 572         function maybeWatchedLink( $link, $watched=false ) {
 573                 if( $watched ) {
 574                         // FIXME: css style might be more appropriate
 575                         return '<strong class="mw-watched">' . $link . '</strong>';
 576                 } else {
 577                         return $link;
 578                 }
 579         }
 580
 581         /**
 582          * Generate HTML for an arrow or placeholder graphic
 583          * @param string $dir one of '', 'd', 'l', 'r'
 584          * @param string $alt text
 585          * @return string HTML <img> tag
 586          * @access private
 587          */
 588         function arrow( $dir, $alt='' ) {
 589                 global $wgStylePath;
 590                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 591                 $encAlt = htmlspecialchars( $alt );
 592                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" />";
 593         }
 594
 595         /**
 596          * Generate HTML for a right- or left-facing arrow,
 597          * depending on language direction.
 598          * @return string HTML <img> tag
 599          * @access private
 600          */
 601         function sideArrow() {
 602                 global $wgContLang;
 603                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
 604                 return $this->arrow( $dir, '+' );
 605         }
 606
 607         /**
 608          * Generate HTML for a down-facing arrow
 609          * depending on language direction.
 610          * @return string HTML <img> tag
 611          * @access private
 612          */
 613         function downArrow() {
 614                 return $this->arrow( 'd', '-' );
 615         }
 616
 617         /**
 618          * Generate HTML for a spacer image
 619          * @return string HTML <img> tag
 620          * @access private
 621          */
 622         function spacerArrow() {
 623                 return $this->arrow( '', ' ' );
 624         }
 625
 626         /**
 627          * Enhanced RC ungrouped line.
 628          * @return string a HTML formated line (generated using $r)
 629          */
 630         function recentChangesBlockLine( $rcObj ) {
 631                 global $wgContLang, $wgRCShowChangedSize;
 632
 633                 # Get rc_xxxx variables
 634                 // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
 635                 extract( $rcObj->mAttribs );
 636                 $curIdEq = 'curid='.$rc_cur_id;
 637
 638                 $r = '';
 639
 640                 # Spacer image
 641                 $r .= $this->spacerArrow();
 642
 643                 # Flag and Timestamp
 644                 $r .= '<tt>';
 645
 646                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 647                         $r .= '&nbsp;&nbsp;&nbsp;';
 648                 } else {
 649                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled, '&nbsp;', $rc_bot );
 650                 }
 651                 $r .= ' '.$rcObj->timestamp.' </tt>';
 652
 653                 # Article link
 654                 $r .= $this->maybeWatchedLink( $rcObj->link, $rcObj->watched );
 655
 656                 # Diff
 657                 $r .= ' ('. $rcObj->difflink . $this->message['semicolon-separator'] . ' ';
 658
 659                 # Hist
 660                 $r .= $this->skin->makeKnownLinkObj( $rcObj->getTitle(), wfMsg( 'hist' ), $curIdEq.'&action=history' ) . ') . . ';
 661
 662                 # Character diff
 663                 if( $wgRCShowChangedSize ) {
 664                         $r .= ( $rcObj->getCharacterDifference() == '' ? '' : '&nbsp;' . $rcObj->getCharacterDifference() . ' . . ' ) ;
 665                 }
 666
 667                 # User/talk
 668                 $r .= $rcObj->userlink . $rcObj->usertalklink;
 669
 670                 # Comment
 671                 if( $rc_type != RC_MOVE && $rc_type != RC_MOVE_OVER_REDIRECT ) {
 672                         $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 673                 }
 674
 675                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
 676
 677                 $r .= "<br />\n";
 678                 return $r;
 679         }
 680
 681         /**
 682          * If enhanced RC is in use, this function takes the previously cached
 683          * RC lines, arranges them, and outputs the HTML
 684          */
 685         function recentChangesBlock() {
 686                 if( count ( $this->rc_cache ) == 0 ) {
 687                         return '';
 688                 }
 689                 $blockOut = '';
 690                 foreach( $this->rc_cache as $block ) {
 691                         if( count( $block ) < 2 ) {
 692                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 693                         } else {
 694                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 695                         }
 696                 }
 697
 698                 return '<div>'.$blockOut.'</div>';
 699         }
 700
 701         /**
 702          * Returns text for the end of RC
 703          * If enhanced RC is in use, returns pretty much all the text
 704          */
 705         function endRecentChangesList() {
 706                 return $this->recentChangesBlock() . parent::endRecentChangesList();
 707         }
 708
 709 }