includes/changes/EnhancedChangesList.php

   1 <?php
   2 /**
   3  * Generates a list of changes using an Enhanced system (uses javascript).
   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  */
  22
  23 class EnhancedChangesList extends ChangesList {
  24         /** @var array Array of array of RCCacheEntry */
  25         protected $rc_cache;
  26
  27         /**
  28          * Add the JavaScript file for enhanced changeslist
  29          * @return string
  30          */
  31         public function beginRecentChangesList() {
  32                 $this->rc_cache = array();
  33                 $this->rcMoveIndex = 0;
  34                 $this->rcCacheIndex = 0;
  35                 $this->lastdate = '';
  36                 $this->rclistOpen = false;
  37                 $this->getOutput()->addModuleStyles( array(
  38                         'mediawiki.special.changeslist',
  39                         'mediawiki.special.changeslist.enhanced',
  40                 ) );
  41                 $this->getOutput()->addModules( array(
  42                         'jquery.makeCollapsible',
  43                         'mediawiki.icon',
  44                 ) );
  45
  46                 return '<div class="mw-changeslist">';
  47         }
  48
  49         /**
  50          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  51          *
  52          * @param RecentChange $baseRC
  53          * @param bool $watched
  54          *
  55          * @return string
  56          */
  57         public function recentChangesLine( &$baseRC, $watched = false ) {
  58                 wfProfileIn( __METHOD__ );
  59
  60                 # If it's a new day, add the headline and flush the cache
  61                 $date = $this->getLanguage()->userDate(
  62                         $baseRC->mAttribs['rc_timestamp'],
  63                         $this->getUser()
  64                 );
  65
  66                 $ret = '';
  67
  68                 if ( $date != $this->lastdate ) {
  69                         # Process current cache
  70                         $ret = $this->recentChangesBlock();
  71                         $this->rc_cache = array();
  72                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
  73                         $this->lastdate = $date;
  74                 }
  75
  76                 # Create a specialised object
  77                 $cacheEntry = RCCacheEntry::newFromParent( $baseRC );
  78
  79                 $curIdEq = array( 'curid' => $cacheEntry->mAttribs['rc_cur_id'] );
  80
  81                 # Should patrol-related stuff be shown?
  82                 $cacheEntry->unpatrolled = $this->showAsUnpatrolled( $cacheEntry );
  83
  84                 $showdifflinks = true;
  85
  86                 # Make article link
  87                 $type = $cacheEntry->mAttribs['rc_type'];
  88                 $logType = $cacheEntry->mAttribs['rc_log_type'];
  89
  90                 // Page moves, very old style, not supported anymore
  91                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
  92                         $clink = '';
  93                 // New unpatrolled pages
  94                 } elseif ( $cacheEntry->unpatrolled && $type == RC_NEW ) {
  95                         $clink = Linker::linkKnown( $cacheEntry->getTitle() );
  96                 // Log entries
  97                 } elseif ( $type == RC_LOG ) {
  98                         if ( $logType ) {
  99                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 100                                 $logpage = new LogPage( $logType );
 101                                 $logname = $logpage->getName()->escaped();
 102                                 $clink = $this->msg( 'parentheses' )
 103                                         ->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 104                         } else {
 105                                 $clink = Linker::link( $cacheEntry->getTitle() );
 106                         }
 107                         $watched = false;
 108                 // Log entries (old format) and special pages
 109                 } elseif ( $cacheEntry->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 110                         wfDebug( "Unexpected special page in recentchanges\n" );
 111                         $clink = '';
 112                 // Edits
 113                 } else {
 114                         $clink = Linker::linkKnown( $cacheEntry->getTitle() );
 115                 }
 116
 117                 # Don't show unusable diff links
 118                 if ( !ChangesList::userCan( $cacheEntry, Revision::DELETED_TEXT, $this->getUser() ) ) {
 119                         $showdifflinks = false;
 120                 }
 121
 122                 $time = $this->getLanguage()->userTime( $cacheEntry->mAttribs['rc_timestamp'], $this->getUser() );
 123
 124                 $cacheEntry->watched = $watched;
 125                 $cacheEntry->link = $clink;
 126                 $cacheEntry->timestamp = $time;
 127                 $cacheEntry->numberofWatchingusers = $baseRC->numberofWatchingusers;
 128
 129                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 130                 # called too many times (50% of CPU time on RecentChanges!).
 131                 $thisOldid = $cacheEntry->mAttribs['rc_this_oldid'];
 132                 $lastOldid = $cacheEntry->mAttribs['rc_last_oldid'];
 133
 134                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 135                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid );
 136
 137                 if ( !$showdifflinks ) {
 138                         $curLink = $this->message['cur'];
 139                         $diffLink = $this->message['diff'];
 140                 } elseif ( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 141                         if ( $type != RC_NEW ) {
 142                                 $curLink = $this->message['cur'];
 143                         } else {
 144                                 $curUrl = htmlspecialchars( $cacheEntry->getTitle()->getLinkURL( $querycur ) );
 145                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 146                         }
 147                         $diffLink = $this->message['diff'];
 148                 } else {
 149                         $diffUrl = htmlspecialchars( $cacheEntry->getTitle()->getLinkURL( $querydiff ) );
 150                         $curUrl = htmlspecialchars( $cacheEntry->getTitle()->getLinkURL( $querycur ) );
 151                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 152                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 153                 }
 154
 155                 # Make "last" link
 156                 if ( !$showdifflinks || !$lastOldid ) {
 157                         $lastLink = $this->message['last'];
 158                 } elseif ( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 159                         $lastLink = $this->message['last'];
 160                 } else {
 161                         $lastLink = Linker::linkKnown( $cacheEntry->getTitle(), $this->message['last'],
 162                                 array(), $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid ) );
 163                 }
 164
 165                 # Make user links
 166                 if ( $this->isDeleted( $cacheEntry, Revision::DELETED_USER ) ) {
 167                         $cacheEntry->userlink = ' <span class="history-deleted">' .
 168                                 $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 169                 } else {
 170                         $cacheEntry->userlink = Linker::userLink(
 171                                 $cacheEntry->mAttribs['rc_user'],
 172                                 $cacheEntry->mAttribs['rc_user_text']
 173                         );
 174
 175                         $cacheEntry->usertalklink = Linker::userToolLinks(
 176                                 $cacheEntry->mAttribs['rc_user'],
 177                                 $cacheEntry->mAttribs['rc_user_text']
 178                         );
 179                 }
 180
 181                 $cacheEntry->lastlink = $lastLink;
 182                 $cacheEntry->curlink = $curLink;
 183                 $cacheEntry->difflink = $diffLink;
 184
 185                 # Put accumulated information into the cache, for later display
 186                 # Page moves go on their own line
 187                 $title = $cacheEntry->getTitle();
 188                 $secureName = $title->getPrefixedDBkey();
 189
 190                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 191                         # Use an @ character to prevent collision with page names
 192                         $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $cacheEntry );
 193                 } else {
 194                         # Logs are grouped by type
 195                         if ( $type == RC_LOG ) {
 196                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 197                         }
 198                         if ( !isset( $this->rc_cache[$secureName] ) ) {
 199                                 $this->rc_cache[$secureName] = array();
 200                         }
 201
 202                         array_push( $this->rc_cache[$secureName], $cacheEntry );
 203                 }
 204
 205                 wfProfileOut( __METHOD__ );
 206
 207                 return $ret;
 208         }
 209
 210         /**
 211          * Enhanced RC group
 212          * @param RCCacheEntry[] $block
 213          * @return string
 214          */
 215         protected function recentChangesBlockGroup( $block ) {
 216                 global $wgRCShowChangedSize;
 217
 218                 wfProfileIn( __METHOD__ );
 219
 220                 # Add the namespace and title of the block as part of the class
 221                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 222                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 223                         # Log entry
 224                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 225                                 . $block[0]->mAttribs['rc_log_type'] );
 226                 } else {
 227                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 228                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 229                 }
 230                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 231                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 232                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 233                         Html::openElement( 'tr' );
 234
 235                 # Collate list of users
 236                 $userlinks = array();
 237                 # Other properties
 238                 $unpatrolled = false;
 239                 $isnew = false;
 240                 $allBots = true;
 241                 $allMinors = true;
 242                 $curId = $currentRevision = 0;
 243                 # Some catalyst variables...
 244                 $namehidden = true;
 245                 $allLogs = true;
 246                 $oldid = '';
 247                 foreach ( $block as $rcObj ) {
 248                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 249                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 250                                 $isnew = true;
 251                         }
 252                         // If all log actions to this page were hidden, then don't
 253                         // give the name of the affected page for this block!
 254                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 255                                 $namehidden = false;
 256                         }
 257                         $u = $rcObj->userlink;
 258                         if ( !isset( $userlinks[$u] ) ) {
 259                                 $userlinks[$u] = 0;
 260                         }
 261                         if ( $rcObj->unpatrolled ) {
 262                                 $unpatrolled = true;
 263                         }
 264                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 265                                 $allLogs = false;
 266                         }
 267                         # Get the latest entry with a page_id and oldid
 268                         # since logs may not have these.
 269                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 270                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 271                         }
 272                         if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 273                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 274                         }
 275
 276                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 277                                 $allBots = false;
 278                         }
 279                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 280                                 $allMinors = false;
 281                         }
 282
 283                         $userlinks[$u]++;
 284                 }
 285
 286                 # Sort the list and convert to text
 287                 krsort( $userlinks );
 288                 asort( $userlinks );
 289                 $users = array();
 290                 foreach ( $userlinks as $userlink => $count ) {
 291                         $text = $userlink;
 292                         $text .= $this->getLanguage()->getDirMark();
 293                         if ( $count > 1 ) {
 294                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 295                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 296                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 297                         }
 298                         array_push( $users, $text );
 299                 }
 300
 301                 $users = ' <span class="changedby">'
 302                         . $this->msg( 'brackets' )->rawParams(
 303                                 implode( $this->message['semicolon-separator'], $users )
 304                         )->escaped() . '</span>';
 305
 306                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow ' .
 307                         'mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 308                 $r .= "<td>$tl</td>";
 309
 310                 # Main line
 311                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 312                         'newpage' => $isnew, # show, when one have this flag
 313                         'minor' => $allMinors, # show only, when all have this flag
 314                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 315                         'bot' => $allBots, # show only, when all have this flag
 316                 ) );
 317
 318                 # Timestamp
 319                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 320
 321                 # Article link
 322                 if ( $namehidden ) {
 323                         $r .= ' <span class="history-deleted">' .
 324                                 $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 325                 } elseif ( $allLogs ) {
 326                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 327                 } else {
 328                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 329                 }
 330
 331                 $r .= $this->getLanguage()->getDirMark();
 332
 333                 $queryParams['curid'] = $curId;
 334
 335                 # Changes message
 336                 static $nchanges = array();
 337                 static $sinceLastVisitMsg = array();
 338
 339                 $n = count( $block );
 340                 if ( !isset( $nchanges[$n] ) ) {
 341                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 342                 }
 343
 344                 $sinceLast = 0;
 345                 $unvisitedOldid = null;
 346                 /** @var $rcObj RCCacheEntry */
 347                 foreach ( $block as $rcObj ) {
 348                         // Same logic as below inside main foreach
 349                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 350                                 $sinceLast++;
 351                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 352                         }
 353                 }
 354                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 355                         $sinceLastVisitMsg[$sinceLast] =
 356                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 357                 }
 358
 359                 # Total change link
 360                 $r .= ' ';
 361                 $logtext = '';
 362                 /** @var $block0 RecentChange */
 363                 $block0 = $block[0];
 364                 if ( !$allLogs ) {
 365                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 366                                 $logtext .= $nchanges[$n];
 367                         } elseif ( $isnew ) {
 368                                 $logtext .= $nchanges[$n];
 369                         } else {
 370                                 $logtext .= Linker::link(
 371                                         $block0->getTitle(),
 372                                         $nchanges[$n],
 373                                         array(),
 374                                         $queryParams + array(
 375                                                 'diff' => $currentRevision,
 376                                                 'oldid' => $oldid,
 377                                         ),
 378                                         array( 'known', 'noclasses' )
 379                                 );
 380                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 381                                         $logtext .= $this->message['pipe-separator'] . Linker::link(
 382                                                 $block0->getTitle(),
 383                                                 $sinceLastVisitMsg[$sinceLast],
 384                                                 array(),
 385                                                 $queryParams + array(
 386                                                         'diff' => $currentRevision,
 387                                                         'oldid' => $unvisitedOldid,
 388                                                 ),
 389                                                 array( 'known', 'noclasses' )
 390                                         );
 391                                 }
 392                         }
 393                 }
 394
 395                 # History
 396                 if ( $allLogs ) {
 397                         // don't show history link for logs
 398                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 399                         $logtext .= $this->message['pipe-separator'] . $this->message['enhancedrc-history'];
 400                 } else {
 401                         $params = $queryParams;
 402                         $params['action'] = 'history';
 403
 404                         $logtext .= $this->message['pipe-separator'] .
 405                                 Linker::linkKnown(
 406                                         $block0->getTitle(),
 407                                         $this->message['enhancedrc-history'],
 408                                         array(),
 409                                         $params
 410                                 );
 411                 }
 412
 413                 if ( $logtext !== '' ) {
 414                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 415                 }
 416
 417                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 418
 419                 # Character difference (does not apply if only log items)
 420                 if ( $wgRCShowChangedSize && !$allLogs ) {
 421                         $last = 0;
 422                         $first = count( $block ) - 1;
 423                         # Some events (like logs) have an "empty" size, so we need to skip those...
 424                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 425                                 $last++;
 426                         }
 427                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 428                                 $first--;
 429                         }
 430                         # Get net change
 431                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
 432
 433                         if ( $chardiff == '' ) {
 434                                 $r .= ' ';
 435                         } else {
 436                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
 437                         }
 438                 }
 439
 440                 $r .= $users;
 441                 $r .= $this->numberofWatchingusers( $block0->numberofWatchingusers );
 442                 $r .= '</td></tr>';
 443
 444                 # Sub-entries
 445                 foreach ( $block as $rcObj ) {
 446                         # Classes to apply -- TODO implement
 447                         $classes = array();
 448                         $type = $rcObj->mAttribs['rc_type'];
 449
 450                         $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 451                                 ? ' class="mw-enhanced-watched"' : '';
 452
 453                         $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
 454                         $r .= $this->recentChangesFlags( array(
 455                                 'newpage' => $type == RC_NEW,
 456                                 'minor' => $rcObj->mAttribs['rc_minor'],
 457                                 'unpatrolled' => $rcObj->unpatrolled,
 458                                 'bot' => $rcObj->mAttribs['rc_bot'],
 459                         ) );
 460                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 461
 462                         $params = $queryParams;
 463
 464                         if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 465                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 466                         }
 467
 468                         # Log timestamp
 469                         if ( $type == RC_LOG ) {
 470                                 $link = $rcObj->timestamp;
 471                         # Revision link
 472                         } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 473                                 $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 474                         } else {
 475
 476                                 $link = Linker::linkKnown(
 477                                         $rcObj->getTitle(),
 478                                         $rcObj->timestamp,
 479                                         array(),
 480                                         $params
 481                                 );
 482                                 if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 483                                         $link = '<span class="history-deleted">' . $link . '</span> ';
 484                                 }
 485                         }
 486                         $r .= $link . '</span>';
 487
 488                         if ( !$type == RC_LOG || $type == RC_NEW ) {
 489                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams(
 490                                         $rcObj->curlink .
 491                                                 $this->message['pipe-separator'] .
 492                                                 $rcObj->lastlink
 493                                 )->escaped();
 494                         }
 495                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 496
 497                         # Character diff
 498                         if ( $wgRCShowChangedSize ) {
 499                                 $cd = $this->formatCharacterDifference( $rcObj );
 500                                 if ( $cd !== '' ) {
 501                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 502                                 }
 503                         }
 504
 505                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 506                                 $r .= $this->insertLogEntry( $rcObj );
 507                         } else {
 508                                 # User links
 509                                 $r .= $rcObj->userlink;
 510                                 $r .= $rcObj->usertalklink;
 511                                 $r .= $this->insertComment( $rcObj );
 512                         }
 513
 514                         # Rollback
 515                         $this->insertRollback( $r, $rcObj );
 516                         # Tags
 517                         $this->insertTags( $r, $rcObj, $classes );
 518
 519                         $r .= "</td></tr>\n";
 520                 }
 521                 $r .= "</table>\n";
 522
 523                 $this->rcCacheIndex++;
 524
 525                 wfProfileOut( __METHOD__ );
 526
 527                 return $r;
 528         }
 529
 530         /**
 531          * Generate HTML for an arrow or placeholder graphic
 532          * @param string $dir One of '', 'd', 'l', 'r'
 533          * @param string $alt
 534          * @param string $title
 535          * @return string HTML "<img>" tag
 536          */
 537         protected function arrow( $dir, $alt = '', $title = '' ) {
 538                 global $wgStylePath;
 539                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 540                 $encAlt = htmlspecialchars( $alt );
 541                 $encTitle = htmlspecialchars( $title );
 542
 543                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
 544         }
 545
 546         /**
 547          * Generate HTML for a right- or left-facing arrow,
 548          * depending on language direction.
 549          * @return string HTML "<img>" tag
 550          */
 551         protected function sideArrow() {
 552                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
 553
 554                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
 555         }
 556
 557         /**
 558          * Generate HTML for a down-facing arrow
 559          * depending on language direction.
 560          * @return string HTML "<img>" tag
 561          */
 562         protected function downArrow() {
 563                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
 564         }
 565
 566         /**
 567          * Generate HTML for a spacer image
 568          * @return string HTML "<img>" tag
 569          */
 570         protected function spacerArrow() {
 571                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
 572         }
 573
 574         /**
 575          * Enhanced RC ungrouped line.
 576          *
 577          * @param RecentChange|RCCacheEntry $rcObj
 578          * @return string A HTML formatted line (generated using $r)
 579          */
 580         protected function recentChangesBlockLine( $rcObj ) {
 581                 global $wgRCShowChangedSize;
 582
 583                 wfProfileIn( __METHOD__ );
 584                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 585
 586                 $type = $rcObj->mAttribs['rc_type'];
 587                 $logType = $rcObj->mAttribs['rc_log_type'];
 588                 $classes = array( 'mw-enhanced-rc' );
 589                 if ( $logType ) {
 590                         # Log entry
 591                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 592                 } else {
 593                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 594                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 595                 }
 596                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 597                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 598                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 599                         Html::openElement( 'tr' );
 600
 601                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 602                 # Flag and Timestamp
 603                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 604                         $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
 605                 } else {
 606                         $r .= $this->recentChangesFlags( array(
 607                                 'newpage' => $type == RC_NEW,
 608                                 'minor' => $rcObj->mAttribs['rc_minor'],
 609                                 'unpatrolled' => $rcObj->unpatrolled,
 610                                 'bot' => $rcObj->mAttribs['rc_bot'],
 611                         ) );
 612                 }
 613                 $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
 614                 # Article or log link
 615                 if ( $logType ) {
 616                         $logPage = new LogPage( $logType );
 617                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 618                         $logName = $logPage->getName()->escaped();
 619                         $r .= $this->msg( 'parentheses' )
 620                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 621                 } else {
 622                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 623                 }
 624                 # Diff and hist links
 625                 if ( $type != RC_LOG ) {
 626                         $query['action'] = 'history';
 627                         $r .= ' ' . $this->msg( 'parentheses' )
 628                                 ->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 629                                         $rcObj->getTitle(),
 630                                         $this->message['hist'],
 631                                         array(),
 632                                         $query
 633                                 ) )->escaped();
 634                 }
 635                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 636                 # Character diff
 637                 if ( $wgRCShowChangedSize ) {
 638                         $cd = $this->formatCharacterDifference( $rcObj );
 639                         if ( $cd !== '' ) {
 640                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 641                         }
 642                 }
 643
 644                 if ( $type == RC_LOG ) {
 645                         $r .= $this->insertLogEntry( $rcObj );
 646                 } else {
 647                         $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
 648                         $r .= $this->insertComment( $rcObj );
 649                         $this->insertRollback( $r, $rcObj );
 650                 }
 651
 652                 # Tags
 653                 $this->insertTags( $r, $rcObj, $classes );
 654                 # Show how many people are watching this if enabled
 655                 $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 656
 657                 $r .= "</td></tr></table>\n";
 658
 659                 wfProfileOut( __METHOD__ );
 660
 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          * @return string
 669          */
 670         protected function recentChangesBlock() {
 671                 if ( count( $this->rc_cache ) == 0 ) {
 672                         return '';
 673                 }
 674
 675                 wfProfileIn( __METHOD__ );
 676
 677                 $blockOut = '';
 678                 foreach ( $this->rc_cache as $block ) {
 679                         if ( count( $block ) < 2 ) {
 680                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 681                         } else {
 682                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 683                         }
 684                 }
 685
 686                 wfProfileOut( __METHOD__ );
 687
 688                 return '<div>' . $blockOut . '</div>';
 689         }
 690
 691         /**
 692          * Returns text for the end of RC
 693          * If enhanced RC is in use, returns pretty much all the text
 694          * @return string
 695          */
 696         public function endRecentChangesList() {
 697                 return $this->recentChangesBlock() . '</div>';
 698         }
 699 }