includes/ImagePage.php

   1 <?php
   2
   3 if ( !defined( 'MEDIAWIKI' ) )
   4         die( 1 );
   5
   6 /**
   7  * Special handling for image description pages
   8  *
   9  * @ingroup Media
  10  */
  11 class ImagePage extends Article {
  12
  13         /* private */ var $img;  // Image object
  14         /* private */ var $displayImg;
  15         /* private */ var $repo;
  16         /* private */ var $fileLoaded;
  17         var $mExtraDescription = false;
  18         var $dupes;
  19
  20         function __construct( $title ) {
  21                 parent::__construct( $title );
  22                 $this->dupes = null;
  23                 $this->repo = null;
  24         }
  25
  26         public function setFile( $file ) {
  27                 $this->displayImg = $file;
  28                 $this->img = $file;
  29                 $this->fileLoaded = true;
  30         }
  31
  32         protected function loadFile() {
  33                 if ( $this->fileLoaded ) {
  34                         return true;
  35                 }
  36                 $this->fileLoaded = true;
  37
  38                 $this->displayImg = $this->img = false;
  39                 wfRunHooks( 'ImagePageFindFile', array( $this, &$this->img, &$this->displayImg ) );
  40                 if ( !$this->img ) {
  41                         $this->img = wfFindFile( $this->mTitle );
  42                         if ( !$this->img ) {
  43                                 $this->img = wfLocalFile( $this->mTitle );
  44                         }
  45                 }
  46                 if ( !$this->displayImg ) {
  47                         $this->displayImg = $this->img;
  48                 }
  49                 $this->repo = $this->img->getRepo();
  50         }
  51
  52         /**
  53          * Handler for action=render
  54          * Include body text only; none of the image extras
  55          */
  56         public function render() {
  57                 global $wgOut;
  58                 $wgOut->setArticleBodyOnly( true );
  59                 parent::view();
  60         }
  61
  62         public function view() {
  63                 global $wgOut, $wgShowEXIF, $wgRequest, $wgUser;
  64
  65                 $diff = $wgRequest->getVal( 'diff' );
  66                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  67
  68                 if ( $this->mTitle->getNamespace() != NS_FILE || ( isset( $diff ) && $diffOnly ) ) {
  69                         return Article::view();
  70                 }
  71
  72                 $this->loadFile();
  73
  74                 if ( $this->mTitle->getNamespace() == NS_FILE && $this->img->getRedirected() ) {
  75                         if ( $this->mTitle->getDBkey() == $this->img->getName() || isset( $diff ) ) {
  76                                 // mTitle is the same as the redirect target so ask Article
  77                                 // to perform the redirect for us.
  78                                 $wgRequest->setVal( 'diffonly', 'true' );
  79                                 return Article::view();
  80                         } else {
  81                                 // mTitle is not the same as the redirect target so it is
  82                                 // probably the redirect page itself. Fake the redirect symbol
  83                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  84                                 $wgOut->addHTML( $this->viewRedirect( Title::makeTitle( NS_FILE, $this->img->getName() ),
  85                                         /* $appendSubtitle */ true, /* $forceKnown */ true ) );
  86                                 $this->viewUpdates();
  87                                 return;
  88                         }
  89                 }
  90
  91                 $this->showRedirectedFromHeader();
  92
  93                 if ( $wgShowEXIF && $this->displayImg->exists() ) {
  94                         // FIXME: bad interface, see note on MediaHandler::formatMetadata().
  95                         $formattedMetadata = $this->displayImg->formatMetadata();
  96                         $showmeta = $formattedMetadata !== false;
  97                 } else {
  98                         $showmeta = false;
  99                 }
 100
 101                 if ( !$diff && $this->displayImg->exists() )
 102                         $wgOut->addHTML( $this->showTOC( $showmeta ) );
 103
 104                 if ( !$diff )
 105                         $this->openShowImage();
 106
 107                 # No need to display noarticletext, we use our own message, output in openShowImage()
 108                 if ( $this->getID() ) {
 109                         Article::view();
 110                 } else {
 111                         # Just need to set the right headers
 112                         $wgOut->setArticleFlag( true );
 113                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
 114                         $this->viewUpdates();
 115                 }
 116
 117                 # Show shared description, if needed
 118                 if ( $this->mExtraDescription ) {
 119                         $fol = wfMsgNoTrans( 'shareddescriptionfollows' );
 120                         if ( $fol != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $fol ) ) {
 121                                 $wgOut->addWikiText( $fol );
 122                         }
 123                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . "</div>\n" );
 124                 }
 125
 126                 $this->closeShowImage();
 127                 $this->imageHistory();
 128                 // TODO: Cleanup the following
 129
 130                 $wgOut->addHTML( Xml::element( 'h2',
 131                         array( 'id' => 'filelinks' ),
 132                         wfMsg( 'imagelinks' ) ) . "\n" );
 133                 $this->imageDupes();
 134                 # TODO! FIXME! For some freaky reason, we can't redirect to foreign images.
 135                 # Yet we return metadata about the target. Definitely an issue in the FileRepo
 136                 $this->imageRedirects();
 137                 $this->imageLinks();
 138
 139                 # Allow extensions to add something after the image links
 140                 $html = '';
 141                 wfRunHooks( 'ImagePageAfterImageLinks', array( $this, &$html ) );
 142                 if ( $html )
 143                         $wgOut->addHTML( $html );
 144
 145                 if ( $showmeta ) {
 146                         $expand = htmlspecialchars( Xml::escapeJsString( wfMsg( 'metadata-expand' ) ) );
 147                         $collapse = htmlspecialchars( Xml::escapeJsString( wfMsg( 'metadata-collapse' ) ) );
 148                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ) . "\n" );
 149                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 150                         $wgOut->addScriptFile( 'metadata.js' );
 151                         $wgOut->addHTML(
 152                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
 153                 }
 154
 155                 $css = $this->repo->getDescriptionStylesheetUrl();
 156                 if ( $css ) {
 157                         $wgOut->addStyle( $css );
 158                 }
 159         }
 160
 161         public function getRedirectTarget() {
 162                 $this->loadFile();
 163                 if ( $this->img->isLocal() ) {
 164                         return parent::getRedirectTarget();
 165                 }
 166                 // Foreign image page
 167                 $from = $this->img->getRedirected();
 168                 $to = $this->img->getName();
 169                 if ( $from == $to ) {
 170                         return null;
 171                 }
 172                 return $this->mRedirectTarget = Title::makeTitle( NS_FILE, $to );
 173         }
 174         public function followRedirect() {
 175                 $this->loadFile();
 176                 if ( $this->img->isLocal() ) {
 177                         return parent::followRedirect();
 178                 }
 179                 $from = $this->img->getRedirected();
 180                 $to = $this->img->getName();
 181                 if ( $from == $to ) {
 182                         return false;
 183                 }
 184                 return Title::makeTitle( NS_FILE, $to );
 185         }
 186         public function isRedirect( $text = false ) {
 187                 $this->loadFile();
 188                 if ( $this->img->isLocal() )
 189                         return parent::isRedirect( $text );
 190
 191                 return (bool)$this->img->getRedirected();
 192         }
 193
 194         public function isLocal() {
 195                 $this->loadFile();
 196                 return $this->img->isLocal();
 197         }
 198
 199         public function getFile() {
 200                 $this->loadFile();
 201                 return $this->img;
 202         }
 203
 204         public function getDisplayedFile() {
 205                 $this->loadFile();
 206                 return $this->displayImg;
 207         }
 208
 209         public function getDuplicates() {
 210                 $this->loadFile();
 211                 if ( !is_null( $this->dupes ) ) {
 212                         return $this->dupes;
 213                 }
 214                 if ( !( $hash = $this->img->getSha1() ) ) {
 215                         return $this->dupes = array();
 216                 }
 217                 $dupes = RepoGroup::singleton()->findBySha1( $hash );
 218                 // Remove duplicates with self and non matching file sizes
 219                 $self = $this->img->getRepoName() . ':' . $this->img->getName();
 220                 $size = $this->img->getSize();
 221                 foreach ( $dupes as $index => $file ) {
 222                         $key = $file->getRepoName() . ':' . $file->getName();
 223                         if ( $key == $self )
 224                                 unset( $dupes[$index] );
 225                         if ( $file->getSize() != $size )
 226                                 unset( $dupes[$index] );
 227                 }
 228                 return $this->dupes = $dupes;
 229
 230         }
 231
 232
 233         /**
 234          * Create the TOC
 235          *
 236          * @param $metadata Boolean: whether or not to show the metadata link
 237          * @return String
 238          */
 239         protected function showTOC( $metadata ) {
 240                 $r = array(
 241                                 '<li><a href="#file">' . wfMsgHtml( 'file-anchor-link' ) . '</a></li>',
 242                                 '<li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>',
 243                                 '<li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>',
 244                 );
 245                 if ( $metadata ) {
 246                         $r[] = '<li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>';
 247                 }
 248
 249                 wfRunHooks( 'ImagePageShowTOC', array( $this, &$r ) );
 250
 251                 return '<ul id="filetoc">' . implode( "\n", $r ) . '</ul>';
 252         }
 253
 254         /**
 255          * Make a table with metadata to be shown in the output page.
 256          *
 257          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 258          *
 259          * @param $metadata Array: the array containing the EXIF data
 260          * @return String
 261          */
 262         protected function makeMetadataTable( $metadata ) {
 263                 $r = "<div class=\"mw-imagepage-section-metadata\">";
 264                 $r .= wfMsgNoTrans( 'metadata-help' );
 265                 $r .= "<table id=\"mw_metadata\" class=\"mw_metadata\">\n";
 266                 foreach ( $metadata as $type => $stuff ) {
 267                         foreach ( $stuff as $v ) {
 268                                 # FIXME, why is this using escapeId for a class?!
 269                                 $class = Sanitizer::escapeId( $v['id'] );
 270                                 if ( $type == 'collapsed' ) {
 271                                         $class .= ' collapsable';
 272                                 }
 273                                 $r .= "<tr class=\"$class\">\n";
 274                                 $r .= "<th>{$v['name']}</th>\n";
 275                                 $r .= "<td>{$v['value']}</td>\n</tr>";
 276                         }
 277                 }
 278                 $r .= "</table>\n</div>\n";
 279                 return $r;
 280         }
 281
 282         /**
 283          * Overloading Article's getContent method.
 284          *
 285          * Omit noarticletext if sharedupload; text will be fetched from the
 286          * shared upload server if possible.
 287          */
 288         public function getContent() {
 289                 $this->loadFile();
 290                 if ( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 291                         return '';
 292                 }
 293                 return Article::getContent();
 294         }
 295
 296         protected function openShowImage() {
 297                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest,
 298                         $wgLang, $wgContLang, $wgEnableUploads;
 299
 300                 $this->loadFile();
 301
 302                 $full_url  = $this->displayImg->getURL();
 303                 $linkAttribs = false;
 304                 $sizeSel = intval( $wgUser->getOption( 'imagesize' ) );
 305                 if ( !isset( $wgImageLimits[$sizeSel] ) ) {
 306                         $sizeSel = User::getDefaultOption( 'imagesize' );
 307
 308                         // The user offset might still be incorrect, specially if
 309                         // $wgImageLimits got changed (see bug #8858).
 310                         if ( !isset( $wgImageLimits[$sizeSel] ) ) {
 311                                 // Default to the first offset in $wgImageLimits
 312                                 $sizeSel = 0;
 313                         }
 314                 }
 315                 $max = $wgImageLimits[$sizeSel];
 316                 $maxWidth = $max[0];
 317                 $maxHeight = $max[1];
 318                 $sk = $wgUser->getSkin();
 319                 $dirmark = $wgContLang->getDirMark();
 320
 321                 if ( $this->displayImg->exists() ) {
 322                         # image
 323                         $page = $wgRequest->getIntOrNull( 'page' );
 324                         if ( is_null( $page ) ) {
 325                                 $params = array();
 326                                 $page = 1;
 327                         } else {
 328                                 $params = array( 'page' => $page );
 329                         }
 330                         $width_orig = $this->displayImg->getWidth( $page );
 331                         $width = $width_orig;
 332                         $height_orig = $this->displayImg->getHeight( $page );
 333                         $height = $height_orig;
 334                         $mime = $this->displayImg->getMimeType();
 335                         $showLink = false;
 336                         $linkAttribs = array( 'href' => $full_url );
 337                         $longDesc = $this->displayImg->getLongDesc();
 338
 339                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this, &$wgOut ) );
 340
 341                         if ( $this->displayImg->allowInlineDisplay() ) {
 342                                 # image
 343
 344                                 # "Download high res version" link below the image
 345                                 # $msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->displayImg->getSize() ), $mime );
 346                                 # We'll show a thumbnail of this image
 347                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 348                                         # Calculate the thumbnail size.
 349                                         # First case, the limiting factor is the width, not the height.
 350                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 351                                                 $height = round( $height * $maxWidth / $width );
 352                                                 $width = $maxWidth;
 353                                                 # Note that $height <= $maxHeight now.
 354                                         } else {
 355                                                 $newwidth = floor( $width * $maxHeight / $height );
 356                                                 $height = round( $height * $newwidth / $width );
 357                                                 $width = $newwidth;
 358                                                 # Note that $height <= $maxHeight now, but might not be identical
 359                                                 # because of rounding.
 360                                         }
 361                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 362                                         $msgsmall = wfMsgExt( 'show-big-image-thumb', 'parseinline',
 363                                                 $wgLang->formatNum( $width ),
 364                                                 $wgLang->formatNum( $height )
 365                                         );
 366                                 } else {
 367                                         # Image is small enough to show full size on image page
 368                                         $msgbig = htmlspecialchars( $this->displayImg->getName() );
 369                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 370                                 }
 371
 372                                 $params['width'] = $width;
 373                                 $thumbnail = $this->displayImg->transform( $params );
 374
 375                                 $anchorclose = "<br />";
 376                                 if ( $this->displayImg->mustRender() ) {
 377                                         $showLink = true;
 378                                 } else {
 379                                         $anchorclose .=
 380                                                 $msgsmall .
 381                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 382                                 }
 383
 384                                 $isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
 385                                 if ( $isMulti ) {
 386                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 387                                 }
 388
 389                                 if ( $thumbnail ) {
 390                                         $options = array(
 391                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 392                                                 'file-link' => true,
 393                                         );
 394                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 395                                                 $thumbnail->toHtml( $options ) .
 396                                                 $anchorclose . "</div>\n" );
 397                                 }
 398
 399                                 if ( $isMulti ) {
 400                                         $count = $this->displayImg->pageCount();
 401
 402                                         if ( $page > 1 ) {
 403                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 404                                                 $link = $sk->link(
 405                                                         $this->mTitle,
 406                                                         $label,
 407                                                         array(),
 408                                                         array( 'page' => $page - 1 ),
 409                                                         array( 'known', 'noclasses' )
 410                                                 );
 411                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 412                                                         array( 'page' => $page - 1 ) );
 413                                         } else {
 414                                                 $thumb1 = '';
 415                                         }
 416
 417                                         if ( $page < $count ) {
 418                                                 $label = wfMsg( 'imgmultipagenext' );
 419                                                 $link = $sk->link(
 420                                                         $this->mTitle,
 421                                                         $label,
 422                                                         array(),
 423                                                         array( 'page' => $page + 1 ),
 424                                                         array( 'known', 'noclasses' )
 425                                                 );
 426                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 427                                                         array( 'page' => $page + 1 ) );
 428                                         } else {
 429                                                 $thumb2 = '';
 430                                         }
 431
 432                                         global $wgScript;
 433
 434                                         $formParams = array(
 435                                                 'name' => 'pageselector',
 436                                                 'action' => $wgScript,
 437                                                 'onchange' => 'document.pageselector.submit();',
 438                                         );
 439
 440                                         $option = array();
 441                                         for ( $i = 1; $i <= $count; $i++ ) {
 442                                                 $options[] = Xml::option( $wgLang->formatNum( $i ), $i, $i == $page );
 443                                         }
 444                                         $select = Xml::tags( 'select',
 445                                                 array( 'id' => 'pageselector', 'name' => 'page' ),
 446                                                 implode( "\n", $options ) );
 447
 448                                         $wgOut->addHTML(
 449                                                 '</td><td><div class="multipageimagenavbox">' .
 450                                                 Xml::openElement( 'form', $formParams ) .
 451                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() ) .
 452                                                 wfMsgExt( 'imgmultigoto', array( 'parseinline', 'replaceafter' ), $select ) .
 453                                                 Xml::submitButton( wfMsg( 'imgmultigo' ) ) .
 454                                                 Xml::closeElement( 'form' ) .
 455                                                 "<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>"
 456                                         );
 457                                 }
 458                         } else {
 459                                 # if direct link is allowed but it's not a renderable image, show an icon.
 460                                 if ( $this->displayImg->isSafeFile() ) {
 461                                         $icon = $this->displayImg->iconThumb();
 462
 463                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 464                                         $icon->toHtml( array( 'file-link' => true ) ) .
 465                                         "</div>\n" );
 466                                 }
 467
 468                                 $showLink = true;
 469                         }
 470
 471
 472                         if ( $showLink ) {
 473                                 $filename = wfEscapeWikiText( $this->displayImg->getName() );
 474                                 $medialink = "[[Media:$filename|$filename]]";
 475
 476                                 if ( !$this->displayImg->isSafeFile() ) {
 477                                         $warning = wfMsgNoTrans( 'mediawarning' );
 478                                         $wgOut->addWikiText( <<<EOT
 479 <div class="fullMedia">
 480 <span class="dangerousLink">{$medialink}</span>$dirmark
 481 <span class="fileInfo">$longDesc</span>
 482 </div>
 483 <div class="mediaWarning">$warning</div>
 484 EOT
 485                                                 );
 486                                 } else {
 487                                         $wgOut->addWikiText( <<<EOT
 488 <div class="fullMedia">
 489 {$medialink}{$dirmark}
 490 <span class="fileInfo">$longDesc</span>
 491 </div>
 492 EOT
 493                                         );
 494                                 }
 495                         }
 496
 497                         if ( !$this->displayImg->isLocal() ) {
 498                                 $this->printSharedImageText();
 499                         }
 500                 } else {
 501                         # Image does not exist
 502                         if ( $wgEnableUploads && $wgUser->isAllowed( 'upload' ) ) {
 503                                 // Only show an upload link if the user can upload
 504                                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 505                                 $nofile = array(
 506                                         'filepage-nofile-link',
 507                                         $uploadTitle->getFullUrl( array( 'wpDestFile' => $this->img->getName() ) )
 508                                 );
 509                         }
 510                         else
 511                         {
 512                                 $nofile = 'filepage-nofile';
 513                         }
 514                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 515                         $wgOut->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
 516                 }
 517         }
 518
 519         /**
 520          * Show a notice that the file is from a shared repository
 521          */
 522         protected function printSharedImageText() {
 523                 global $wgOut;
 524
 525                 $this->loadFile();
 526
 527                 $descUrl = $this->img->getDescriptionUrl();
 528                 $descText = $this->img->getDescriptionText();
 529
 530                 $wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
 531                 $repo = $this->img->getRepo()->getDisplayName();
 532
 533                 $msg = '';
 534                 if ( $descUrl && $descText && wfMsgNoTrans( 'sharedupload-desc-here' ) !== '-'  ) {
 535                         $wgOut->wrapWikiMsg( $wrap, array( 'sharedupload-desc-here', $repo, $descUrl ) );
 536                 } elseif ( $descUrl && wfMsgNoTrans( 'sharedupload-desc-there' ) !== '-' ) {
 537                         $wgOut->wrapWikiMsg( $wrap, array( 'sharedupload-desc-there', $repo, $descUrl ) );
 538                 } else {
 539                         $wgOut->wrapWikiMsg( $wrap, array( 'sharedupload', $repo ), ''/*BACKCOMPAT*/ );
 540                 }
 541
 542                 if ( $descText ) {
 543                         $this->mExtraDescription = $descText;
 544                 }
 545         }
 546
 547         public function getUploadUrl() {
 548                 $this->loadFile();
 549                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 550                 return $uploadTitle->getFullUrl( array(
 551                         'wpDestFile' => $this->img->getName(),
 552                         'wpForReUpload' => 1
 553                  ) );
 554         }
 555
 556         /**
 557          * Print out the various links at the bottom of the image page, e.g. reupload,
 558          * external editing (and instructions link) etc.
 559          */
 560         protected function uploadLinksBox() {
 561                 global $wgUser, $wgOut, $wgEnableUploads, $wgUseExternalEditor;
 562
 563                 if ( !$wgEnableUploads ) { return; }
 564
 565                 $this->loadFile();
 566                 if ( !$this->img->isLocal() )
 567                         return;
 568
 569                 $sk = $wgUser->getSkin();
 570
 571                 $wgOut->addHTML( "<br /><ul>\n" );
 572
 573                 # "Upload a new version of this file" link
 574                 if ( UploadBase::userCanReUpload( $wgUser, $this->img->name ) ) {
 575                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 576                         $wgOut->addHTML( "<li id=\"mw-imagepage-reupload-link\"><div class=\"plainlinks\">{$ulink}</div></li>\n" );
 577                 }
 578
 579                 # External editing link
 580                 if ( $wgUseExternalEditor ) {
 581                         $elink = $sk->link(
 582                                 $this->mTitle,
 583                                 wfMsgHtml( 'edit-externally' ),
 584                                 array(),
 585                                 array(
 586                                         'action' => 'edit',
 587                                         'externaledit' => 'true',
 588                                         'mode' => 'file'
 589                                 ),
 590                                 array( 'known', 'noclasses' )
 591                         );
 592                         $wgOut->addHTML( '<li id="mw-imagepage-edit-external">' . $elink . ' <small>' . wfMsgExt( 'edit-externally-help', array( 'parseinline' ) ) . "</small></li>\n" );
 593                 }
 594
 595                 $wgOut->addHTML( "</ul>\n" );
 596         }
 597
 598         protected function closeShowImage() { } # For overloading
 599
 600         /**
 601          * If the page we've just displayed is in the "Image" namespace,
 602          * we follow it with an upload history of the image and its usage.
 603          */
 604         protected function imageHistory() {
 605                 global $wgOut;
 606
 607                 $this->loadFile();
 608                 $pager = new ImageHistoryPseudoPager( $this );
 609                 $wgOut->addHTML( $pager->getBody() );
 610
 611                 $this->img->resetHistory(); // free db resources
 612
 613                 # Exist check because we don't want to show this on pages where an image
 614                 # doesn't exist along with the noimage message, that would suck. -ævar
 615                 if ( $this->img->exists() ) {
 616                         $this->uploadLinksBox();
 617                 }
 618         }
 619
 620         protected function imageLinks() {
 621                 global $wgUser, $wgOut, $wgLang;
 622
 623                 $limit = 100;
 624
 625                 $dbr = wfGetDB( DB_SLAVE );
 626
 627                 $res = $dbr->select(
 628                         array( 'imagelinks', 'page' ),
 629                         array( 'page_namespace', 'page_title' ),
 630                         array( 'il_to' => $this->mTitle->getDBkey(), 'il_from = page_id' ),
 631                         __METHOD__,
 632                         array( 'LIMIT' => $limit + 1 )
 633                 );
 634                 $count = $dbr->numRows( $res );
 635                 if ( $count == 0 ) {
 636                         $wgOut->wrapWikiMsg( Html::rawElement( 'div', array ( 'id' => 'mw-imagepage-nolinkstoimage' ), "\n$1\n" ), 'nolinkstoimage' );
 637                         return;
 638                 }
 639
 640                 $wgOut->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 641                 if ( $count <= $limit - 1 ) {
 642                         $wgOut->addWikiMsg( 'linkstoimage', $count );
 643                 } else {
 644                         // More links than the limit. Add a link to [[Special:Whatlinkshere]]
 645                         $wgOut->addWikiMsg( 'linkstoimage-more',
 646                                 $wgLang->formatNum( $limit ),
 647                                 $this->mTitle->getPrefixedDBkey()
 648                         );
 649                 }
 650
 651                 $wgOut->addHTML( Html::openElement( 'ul', array( 'class' => 'mw-imagepage-linkstoimage' ) ) . "\n" );
 652                 $sk = $wgUser->getSkin();
 653                 $count = 0;
 654                 $elements = array();
 655                 while ( $s = $res->fetchObject() ) {
 656                         $count++;
 657                         if ( $count <= $limit ) {
 658                                 // We have not yet reached the extra one that tells us there is more to fetch
 659                                 $elements[] =  $s;
 660                         }
 661                 }
 662
 663                 // Sort the list by namespace:title
 664                 usort ( $elements, array( $this, 'compare' ) );
 665
 666                 // Create links for every element
 667                 foreach( $elements as $element ) {
 668                         $link = $sk->linkKnown( Title::makeTitle( $element->page_namespace, $element->page_title ) );
 669                         $wgOut->addHTML( Html::rawElement(
 670                                                 'li',
 671                                                 array( 'id' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ),
 672                                                 $link
 673                                         ) . "\n"
 674                         );
 675
 676                 };
 677                 $wgOut->addHTML( Html::closeElement( 'ul' ) . "\n" );
 678                 $res->free();
 679
 680                 // Add a links to [[Special:Whatlinkshere]]
 681                 if ( $count > $limit ) {
 682                         $wgOut->addWikiMsg( 'morelinkstoimage', $this->mTitle->getPrefixedDBkey() );
 683                 }
 684                 $wgOut->addHTML( Html::closeElement( 'div' ) . "\n" );
 685         }
 686
 687         protected function imageRedirects() {
 688                 global $wgUser, $wgOut, $wgLang;
 689
 690                 $redirects = $this->getTitle()->getRedirectsHere( NS_FILE );
 691                 if ( count( $redirects ) == 0 ) return;
 692
 693                 $wgOut->addHTML( "<div id='mw-imagepage-section-redirectstofile'>\n" );
 694                 $wgOut->addWikiMsg( 'redirectstofile',
 695                         $wgLang->formatNum( count( $redirects ) )
 696                 );
 697                 $wgOut->addHTML( "<ul class='mw-imagepage-redirectstofile'>\n" );
 698
 699                 $sk = $wgUser->getSkin();
 700                 foreach ( $redirects as $title ) {
 701                         $link = $sk->link(
 702                                 $title,
 703                                 null,
 704                                 array(),
 705                                 array( 'redirect' => 'no' ),
 706                                 array( 'known', 'noclasses' )
 707                         );
 708                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 709                 }
 710                 $wgOut->addHTML( "</ul></div>\n" );
 711
 712         }
 713
 714         protected function imageDupes() {
 715                 global $wgOut, $wgUser, $wgLang;
 716
 717                 $this->loadFile();
 718
 719                 $dupes = $this->getDuplicates();
 720                 if ( count( $dupes ) == 0 ) return;
 721
 722                 $wgOut->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 723                 $wgOut->addWikiMsg( 'duplicatesoffile',
 724                         $wgLang->formatNum( count( $dupes ) ), $this->mTitle->getDBkey()
 725                 );
 726                 $wgOut->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 727
 728                 $sk = $wgUser->getSkin();
 729                 foreach ( $dupes as $file ) {
 730                         $fromSrc = '';
 731                         if ( $file->isLocal() ) {
 732                                 $link = $sk->link(
 733                                         $file->getTitle(),
 734                                         null,
 735                                         array(),
 736                                         array(),
 737                                         array( 'known', 'noclasses' )
 738                                 );
 739                         } else {
 740                                 $link = $sk->makeExternalLink( $file->getDescriptionUrl(),
 741                                         $file->getTitle()->getPrefixedText() );
 742                                 $fromSrc = wfMsg( 'shared-repo-from', $file->getRepo()->getDisplayName() );
 743                         }
 744                         $wgOut->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
 745                 }
 746                 $wgOut->addHTML( "</ul></div>\n" );
 747         }
 748
 749         /**
 750          * Delete the file, or an earlier version of it
 751          */
 752         public function delete() {
 753                 global $wgUploadMaintenance;
 754                 if ( $wgUploadMaintenance && $this->mTitle && $this->mTitle->getNamespace() == NS_FILE ) {
 755                         global $wgOut;
 756                         $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n", array( 'filedelete-maintenance' ) );
 757                         return;
 758                 }
 759
 760                 $this->loadFile();
 761                 if ( !$this->img->exists() || !$this->img->isLocal() || $this->img->getRedirected() ) {
 762                         // Standard article deletion
 763                         Article::delete();
 764                         return;
 765                 }
 766                 $deleter = new FileDeleteForm( $this->img );
 767                 $deleter->execute();
 768         }
 769
 770         /**
 771          * Revert the file to an earlier version
 772          */
 773         public function revert() {
 774                 $this->loadFile();
 775                 $reverter = new FileRevertForm( $this->img );
 776                 $reverter->execute();
 777         }
 778
 779         /**
 780          * Override handling of action=purge
 781          */
 782         public function doPurge() {
 783                 $this->loadFile();
 784                 if ( $this->img->exists() ) {
 785                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 786                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 787                         $update->doUpdate();
 788                         $this->img->upgradeRow();
 789                         $this->img->purgeCache();
 790                 } else {
 791                         wfDebug( "ImagePage::doPurge no image for " . $this->img->getName() . "; limiting purge to cache only\n" );
 792                         // even if the file supposedly doesn't exist, force any cached information
 793                         // to be updated (in case the cached information is wrong)
 794                         $this->img->purgeCache();
 795                 }
 796                 parent::doPurge();
 797         }
 798
 799         /**
 800          * Display an error with a wikitext description
 801          */
 802         function showError( $description ) {
 803                 global $wgOut;
 804                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 805                 $wgOut->setRobotPolicy( "noindex,nofollow" );
 806                 $wgOut->setArticleRelated( false );
 807                 $wgOut->enableClientCache( false );
 808                 $wgOut->addWikiText( $description );
 809         }
 810
 811
 812         /**
 813          * Callback for usort() to do link sorts by (namespace, title)
 814          * Function copied from Title::compare()
 815          *
 816          * @param $a object page to compare with
 817          * @param $b object page to compare with
 818          * @return Integer: result of string comparison, or namespace comparison
 819          */
 820         protected function compare( $a, $b ) {
 821                 if ( $a->page_namespace == $b->page_namespace ) {
 822                         return strcmp( $a->page_title, $b->page_title );
 823                 } else {
 824                         return $a->page_namespace - $b->page_namespace;
 825                 }
 826         }
 827 }
 828
 829 /**
 830  * Builds the image revision log shown on image pages
 831  *
 832  * @ingroup Media
 833  */
 834 class ImageHistoryList {
 835
 836         protected $imagePage, $img, $skin, $title, $repo, $showThumb;
 837
 838         public function __construct( $imagePage ) {
 839                 global $wgUser, $wgShowArchiveThumbnails;
 840                 $this->skin = $wgUser->getSkin();
 841                 $this->current = $imagePage->getFile();
 842                 $this->img = $imagePage->getDisplayedFile();
 843                 $this->title = $imagePage->getTitle();
 844                 $this->imagePage = $imagePage;
 845                 $this->showThumb = $wgShowArchiveThumbnails && $this->img->canRender();
 846         }
 847
 848         public function getImagePage() {
 849                 return $this->imagePage;
 850         }
 851
 852         public function getSkin() {
 853                 return $this->skin;
 854         }
 855
 856         public function getFile() {
 857                 return $this->img;
 858         }
 859
 860         public function beginImageHistoryList( $navLinks = '' ) {
 861                 global $wgOut, $wgUser;
 862                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) ) . "\n"
 863                         . "<div id=\"mw-imagepage-section-filehistory\">\n"
 864                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 865                         . $navLinks . "\n"
 866                         . Xml::openElement( 'table', array( 'class' => 'wikitable filehistory' ) ) . "\n"
 867                         . '<tr><td></td>'
 868                         . ( $this->current->isLocal() && ( $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deletedhistory' ) ) ? '<td></td>' : '' )
 869                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 870                         . ( $this->showThumb ? '<th>' . wfMsgHtml( 'filehist-thumb' ) . '</th>' : '' )
 871                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 872                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 873                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 874                         . "</tr>\n";
 875         }
 876
 877         public function endImageHistoryList( $navLinks = '' ) {
 878                 return "</table>\n$navLinks\n</div>\n";
 879         }
 880
 881         public function imageHistoryLine( $iscur, $file ) {
 882                 global $wgUser, $wgLang;
 883
 884                 $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
 885                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 886                 $user = $file->getUser( 'id' );
 887                 $usertext = $file->getUser( 'text' );
 888                 $description = $file->getDescription();
 889
 890                 $local = $this->current->isLocal();
 891                 $row = $css = $selected = '';
 892
 893                 // Deletion link
 894                 if ( $local && ( $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deletedhistory' ) ) ) {
 895                         $row .= '<td>';
 896                         # Link to remove from history
 897                         if ( $wgUser->isAllowed( 'delete' ) ) {
 898                                 $q = array( 'action' => 'delete' );
 899                                 if ( !$iscur )
 900                                         $q['oldimage'] = $img;
 901                                 $row .= $this->skin->link(
 902                                         $this->title,
 903                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 904                                         array(), $q, array( 'known' )
 905                                 );
 906                         }
 907                         # Link to hide content. Don't show useless link to people who cannot hide revisions.
 908                         $canHide = $wgUser->isAllowed( 'deleterevision' );
 909                         if ( $canHide || ( $wgUser->isAllowed( 'deletedhistory' ) && $file->getVisibility() ) ) {
 910                                 if ( $wgUser->isAllowed( 'delete' ) ) {
 911                                         $row .= '<br />';
 912                                 }
 913                                 // If file is top revision or locked from this user, don't link
 914                                 if ( $iscur || !$file->userCan( File::DELETED_RESTRICTED ) ) {
 915                                         $del = $this->skin->revDeleteLinkDisabled( $canHide );
 916                                 } else {
 917                                         list( $ts, $name ) = explode( '!', $img, 2 );
 918                                         $query = array(
 919                                                 'type'   => 'oldimage',
 920                                                 'target' => $this->title->getPrefixedText(),
 921                                                 'ids'    => $ts,
 922                                         );
 923                                         $del = $this->skin->revDeleteLink( $query,
 924                                                 $file->isDeleted( File::DELETED_RESTRICTED ), $canHide );
 925                                 }
 926                                 $row .= $del;
 927                         }
 928                         $row .= '</td>';
 929                 }
 930
 931                 // Reversion link/current indicator
 932                 $row .= '<td>';
 933                 if ( $iscur ) {
 934                         $row .= wfMsgHtml( 'filehist-current' );
 935                 } elseif ( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 936                         if ( $file->isDeleted( File::DELETED_FILE ) ) {
 937                                 $row .= wfMsgHtml( 'filehist-revert' );
 938                         } else {
 939                                 $row .= $this->skin->link(
 940                                         $this->title,
 941                                         wfMsgHtml( 'filehist-revert' ),
 942                                         array(),
 943                                         array(
 944                                                 'action' => 'revert',
 945                                                 'oldimage' => $img,
 946                                                 'wpEditToken' => $wgUser->editToken( $img )
 947                                         ),
 948                                         array( 'known', 'noclasses' )
 949                                 );
 950                         }
 951                 }
 952                 $row .= '</td>';
 953
 954                 // Date/time and image link
 955                 if ( $file->getTimestamp() === $this->img->getTimestamp() ) {
 956                         $selected = "class='filehistory-selected'";
 957                 }
 958                 $row .= "<td $selected style='white-space: nowrap;'>";
 959                 if ( !$file->userCan( File::DELETED_FILE ) ) {
 960                         # Don't link to unviewable files
 961                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 962                 } elseif ( $file->isDeleted( File::DELETED_FILE ) ) {
 963                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 964                         # Make a link to review the image
 965                         $url = $this->skin->link(
 966                                 $revdel,
 967                                 $wgLang->timeAndDate( $timestamp, true ),
 968                                 array(),
 969                                 array(
 970                                         'target' => $this->title->getPrefixedText(),
 971                                         'file' => $img,
 972                                         'token' => $wgUser->editToken( $img )
 973                                 ),
 974                                 array( 'known', 'noclasses' )
 975                         );
 976                         $row .= '<span class="history-deleted">' . $url . '</span>';
 977                 } else {
 978                         $url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
 979                         $row .= Xml::element( 'a', array( 'href' => $url ), $wgLang->timeAndDate( $timestamp, true ) );
 980                 }
 981                 $row .= "</td>";
 982
 983                 // Thumbnail
 984                 if ( $this->showThumb ) {
 985                         $row .= '<td>' . $this->getThumbForLine( $file ) . '</td>';
 986                 }
 987
 988                 // Image dimensions + size
 989                 $row .= '<td>';
 990                 $row .= htmlspecialchars( $file->getDimensionsString() );
 991                 $row .= " <span style='white-space: nowrap;'>(" . $this->skin->formatSize( $file->getSize() ) . ')</span>';
 992                 $row .= '</td>';
 993
 994                 // Uploading user
 995                 $row .= '<td>';
 996                 if ( $local ) {
 997                         // Hide deleted usernames
 998                         if ( $file->isDeleted( File::DELETED_USER ) ) {
 999                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
1000                         } else {
1001                                 $row .= $this->skin->userLink( $user, $usertext ) . " <span style='white-space: nowrap;'>" .
1002                                         $this->skin->userToolLinks( $user, $usertext ) . "</span>";
1003                         }
1004                 } else {
1005                         $row .= htmlspecialchars( $usertext );
1006                 }
1007                 $row .= '</td><td>';
1008
1009                 // Don't show deleted descriptions
1010                 if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
1011                         $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
1012                 } else {
1013                         $row .= $this->skin->commentBlock( $description, $this->title );
1014                 }
1015                 $row .= '</td>';
1016
1017                 wfRunHooks( 'ImagePageFileHistoryLine', array( $this, $file, &$row, &$rowClass ) );
1018                 $classAttr = $rowClass ? " class='$rowClass'" : "";
1019
1020                 return "<tr{$classAttr}>{$row}</tr>\n";
1021         }
1022
1023         protected function getThumbForLine( $file ) {
1024                 global $wgLang;
1025
1026                 if ( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE ) && !$file->isDeleted( File::DELETED_FILE ) ) {
1027                         $params = array(
1028                                 'width' => '120',
1029                                 'height' => '120',
1030                         );
1031                         $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
1032
1033                         $thumbnail = $file->transform( $params );
1034                         $options = array(
1035                                 'alt' => wfMsg( 'filehist-thumbtext',
1036                                         $wgLang->timeAndDate( $timestamp, true ),
1037                                         $wgLang->date( $timestamp, true ),
1038                                         $wgLang->time( $timestamp, true ) ),
1039                                 'file-link' => true,
1040                         );
1041
1042                         if ( !$thumbnail ) return wfMsgHtml( 'filehist-nothumb' );
1043
1044                         return $thumbnail->toHtml( $options );
1045                 } else {
1046                         return wfMsgHtml( 'filehist-nothumb' );
1047                 }
1048         }
1049 }
1050
1051 class ImageHistoryPseudoPager extends ReverseChronologicalPager {
1052         function __construct( $imagePage ) {
1053                 parent::__construct();
1054                 $this->mImagePage = $imagePage;
1055                 $this->mTitle = clone ( $imagePage->getTitle() );
1056                 $this->mTitle->setFragment( '#filehistory' );
1057                 $this->mImg = null;
1058                 $this->mHist = array();
1059                 $this->mRange = array( 0, 0 ); // display range
1060         }
1061
1062         function getTitle() {
1063                 return $this->mTitle;
1064         }
1065
1066         function getQueryInfo() {
1067                 return false;
1068         }
1069
1070         function getIndexField() {
1071                 return '';
1072         }
1073
1074         function formatRow( $row ) {
1075                 return '';
1076         }
1077
1078         function getBody() {
1079                 $s = '';
1080                 $this->doQuery();
1081                 if ( count( $this->mHist ) ) {
1082                         $list = new ImageHistoryList( $this->mImagePage );
1083                         # Generate prev/next links
1084                         $navLink = $this->getNavigationBar();
1085                         $s = $list->beginImageHistoryList( $navLink );
1086                         // Skip rows there just for paging links
1087                         for ( $i = $this->mRange[0]; $i <= $this->mRange[1]; $i++ ) {
1088                                 $file = $this->mHist[$i];
1089                                 $s .= $list->imageHistoryLine( !$file->isOld(), $file );
1090                         }
1091                         $s .= $list->endImageHistoryList( $navLink );
1092                 }
1093                 return $s;
1094         }
1095
1096         function doQuery() {
1097                 if ( $this->mQueryDone ) return;
1098                 $this->mImg = $this->mImagePage->getFile(); // ensure loading
1099                 if ( !$this->mImg->exists() ) {
1100                         return;
1101                 }
1102                 $queryLimit = $this->mLimit + 1; // limit plus extra row
1103                 if ( $this->mIsBackwards ) {
1104                         // Fetch the file history
1105                         $this->mHist = $this->mImg->getHistory( $queryLimit, null, $this->mOffset, false );
1106                         // The current rev may not meet the offset/limit
1107                         $numRows = count( $this->mHist );
1108                         if ( $numRows <= $this->mLimit && $this->mImg->getTimestamp() > $this->mOffset ) {
1109                                 $this->mHist = array_merge( array( $this->mImg ), $this->mHist );
1110                         }
1111                 } else {
1112                         // The current rev may not meet the offset
1113                         if ( !$this->mOffset || $this->mImg->getTimestamp() < $this->mOffset ) {
1114                                 $this->mHist[] = $this->mImg;
1115                         }
1116                         // Old image versions (fetch extra row for nav links)
1117                         $oiLimit = count( $this->mHist ) ? $this->mLimit : $this->mLimit + 1;
1118                         // Fetch the file history
1119                         $this->mHist = array_merge( $this->mHist,
1120                                 $this->mImg->getHistory( $oiLimit, $this->mOffset, null, false ) );
1121                 }
1122                 $numRows = count( $this->mHist ); // Total number of query results
1123                 if ( $numRows ) {
1124                         # Index value of top item in the list
1125                         $firstIndex = $this->mIsBackwards ?
1126                                 $this->mHist[$numRows - 1]->getTimestamp() : $this->mHist[0]->getTimestamp();
1127                         # Discard the extra result row if there is one
1128                         if ( $numRows > $this->mLimit && $numRows > 1 ) {
1129                                 if ( $this->mIsBackwards ) {
1130                                         # Index value of item past the index
1131                                         $this->mPastTheEndIndex = $this->mHist[0]->getTimestamp();
1132                                         # Index value of bottom item in the list
1133                                         $lastIndex = $this->mHist[1]->getTimestamp();
1134                                         # Display range
1135                                         $this->mRange = array( 1, $numRows - 1 );
1136                                 } else {
1137                                         # Index value of item past the index
1138                                         $this->mPastTheEndIndex = $this->mHist[$numRows - 1]->getTimestamp();
1139                                         # Index value of bottom item in the list
1140                                         $lastIndex = $this->mHist[$numRows - 2]->getTimestamp();
1141                                         # Display range
1142                                         $this->mRange = array( 0, $numRows - 2 );
1143                                 }
1144                         } else {
1145                                 # Setting indexes to an empty string means that they will be
1146                                 # omitted if they would otherwise appear in URLs. It just so
1147                                 # happens that this  is the right thing to do in the standard
1148                                 # UI, in all the relevant cases.
1149                                 $this->mPastTheEndIndex = '';
1150                                 # Index value of bottom item in the list
1151                                 $lastIndex = $this->mIsBackwards ?
1152                                         $this->mHist[0]->getTimestamp() : $this->mHist[$numRows - 1]->getTimestamp();
1153                                 # Display range
1154                                 $this->mRange = array( 0, $numRows - 1 );
1155                         }
1156                 } else {
1157                         $firstIndex = '';
1158                         $lastIndex = '';
1159                         $this->mPastTheEndIndex = '';
1160                 }
1161                 if ( $this->mIsBackwards ) {
1162                         $this->mIsFirst = ( $numRows < $queryLimit );
1163                         $this->mIsLast = ( $this->mOffset == '' );
1164                         $this->mLastShown = $firstIndex;
1165                         $this->mFirstShown = $lastIndex;
1166                 } else {
1167                         $this->mIsFirst = ( $this->mOffset == '' );
1168                         $this->mIsLast = ( $numRows < $queryLimit );
1169                         $this->mLastShown = $lastIndex;
1170                         $this->mFirstShown = $firstIndex;
1171                 }
1172                 $this->mQueryDone = true;
1173         }
1174 }