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 parent::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 parent::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                         parent::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->addModules( array( 'mediawiki.legacy.metadata' ) );
 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                 $sizeSel = intval( $wgUser->getOption( 'imagesize' ) );
 304                 if ( !isset( $wgImageLimits[$sizeSel] ) ) {
 305                         $sizeSel = User::getDefaultOption( 'imagesize' );
 306
 307                         // The user offset might still be incorrect, specially if
 308                         // $wgImageLimits got changed (see bug #8858).
 309                         if ( !isset( $wgImageLimits[$sizeSel] ) ) {
 310                                 // Default to the first offset in $wgImageLimits
 311                                 $sizeSel = 0;
 312                         }
 313                 }
 314                 $max = $wgImageLimits[$sizeSel];
 315                 $maxWidth = $max[0];
 316                 $maxHeight = $max[1];
 317                 $sk = $wgUser->getSkin();
 318                 $dirmark = $wgContLang->getDirMark();
 319
 320                 if ( $this->displayImg->exists() ) {
 321                         # image
 322                         $page = $wgRequest->getIntOrNull( 'page' );
 323                         if ( is_null( $page ) ) {
 324                                 $params = array();
 325                                 $page = 1;
 326                         } else {
 327                                 $params = array( 'page' => $page );
 328                         }
 329                         $width_orig = $this->displayImg->getWidth( $page );
 330                         $width = $width_orig;
 331                         $height_orig = $this->displayImg->getHeight( $page );
 332                         $height = $height_orig;
 333
 334                         $showLink = false;
 335                         $linkAttribs = array( 'href' => $full_url );
 336                         $longDesc = $this->displayImg->getLongDesc();
 337
 338                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this, &$wgOut ) );
 339
 340                         if ( $this->displayImg->allowInlineDisplay() ) {
 341                                 # image
 342
 343                                 # "Download high res version" link below the image
 344                                 # $msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->displayImg->getSize() ), $mime );
 345                                 # We'll show a thumbnail of this image
 346                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 347                                         # Calculate the thumbnail size.
 348                                         # First case, the limiting factor is the width, not the height.
 349                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 350                                                 $height = round( $height * $maxWidth / $width );
 351                                                 $width = $maxWidth;
 352                                                 # Note that $height <= $maxHeight now.
 353                                         } else {
 354                                                 $newwidth = floor( $width * $maxHeight / $height );
 355                                                 $height = round( $height * $newwidth / $width );
 356                                                 $width = $newwidth;
 357                                                 # Note that $height <= $maxHeight now, but might not be identical
 358                                                 # because of rounding.
 359                                         }
 360                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 361                                         $msgsmall = wfMsgExt( 'show-big-image-thumb', 'parseinline',
 362                                                 $wgLang->formatNum( $width ),
 363                                                 $wgLang->formatNum( $height )
 364                                         );
 365                                 } else {
 366                                         # Image is small enough to show full size on image page
 367                                         $msgbig = htmlspecialchars( $this->displayImg->getName() );
 368                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 369                                 }
 370
 371                                 $params['width'] = $width;
 372                                 $thumbnail = $this->displayImg->transform( $params );
 373
 374                                 $anchorclose = "<br />";
 375                                 if ( $this->displayImg->mustRender() ) {
 376                                         $showLink = true;
 377                                 } else {
 378                                         $anchorclose .=
 379                                                 $msgsmall .
 380                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 381                                 }
 382
 383                                 $isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
 384                                 if ( $isMulti ) {
 385                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 386                                 }
 387
 388                                 if ( $thumbnail ) {
 389                                         $options = array(
 390                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 391                                                 'file-link' => true,
 392                                         );
 393                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 394                                                 $thumbnail->toHtml( $options ) .
 395                                                 $anchorclose . "</div>\n" );
 396                                 }
 397
 398                                 if ( $isMulti ) {
 399                                         $count = $this->displayImg->pageCount();
 400
 401                                         if ( $page > 1 ) {
 402                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 403                                                 $link = $sk->link(
 404                                                         $this->mTitle,
 405                                                         $label,
 406                                                         array(),
 407                                                         array( 'page' => $page - 1 ),
 408                                                         array( 'known', 'noclasses' )
 409                                                 );
 410                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 411                                                         array( 'page' => $page - 1 ) );
 412                                         } else {
 413                                                 $thumb1 = '';
 414                                         }
 415
 416                                         if ( $page < $count ) {
 417                                                 $label = wfMsg( 'imgmultipagenext' );
 418                                                 $link = $sk->link(
 419                                                         $this->mTitle,
 420                                                         $label,
 421                                                         array(),
 422                                                         array( 'page' => $page + 1 ),
 423                                                         array( 'known', 'noclasses' )
 424                                                 );
 425                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 426                                                         array( 'page' => $page + 1 ) );
 427                                         } else {
 428                                                 $thumb2 = '';
 429                                         }
 430
 431                                         global $wgScript;
 432
 433                                         $formParams = array(
 434                                                 'name' => 'pageselector',
 435                                                 'action' => $wgScript,
 436                                                 'onchange' => 'document.pageselector.submit();',
 437                                         );
 438
 439                                         for ( $i = 1; $i <= $count; $i++ ) {
 440                                                 $options[] = Xml::option( $wgLang->formatNum( $i ), $i, $i == $page );
 441                                         }
 442                                         $select = Xml::tags( 'select',
 443                                                 array( 'id' => 'pageselector', 'name' => 'page' ),
 444                                                 implode( "\n", $options ) );
 445
 446                                         $wgOut->addHTML(
 447                                                 '</td><td><div class="multipageimagenavbox">' .
 448                                                 Xml::openElement( 'form', $formParams ) .
 449                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() ) .
 450                                                 wfMsgExt( 'imgmultigoto', array( 'parseinline', 'replaceafter' ), $select ) .
 451                                                 Xml::submitButton( wfMsg( 'imgmultigo' ) ) .
 452                                                 Xml::closeElement( 'form' ) .
 453                                                 "<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>"
 454                                         );
 455                                 }
 456                         } else {
 457                                 # if direct link is allowed but it's not a renderable image, show an icon.
 458                                 if ( $this->displayImg->isSafeFile() ) {
 459                                         $icon = $this->displayImg->iconThumb();
 460
 461                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 462                                         $icon->toHtml( array( 'file-link' => true ) ) .
 463                                         "</div>\n" );
 464                                 }
 465
 466                                 $showLink = true;
 467                         }
 468
 469
 470                         if ( $showLink ) {
 471                                 $filename = wfEscapeWikiText( $this->displayImg->getName() );
 472                                 $medialink = "[[Media:$filename|$filename]]";
 473
 474                                 if ( !$this->displayImg->isSafeFile() ) {
 475                                         $warning = wfMsgNoTrans( 'mediawarning' );
 476                                         $wgOut->addWikiText( <<<EOT
 477 <div class="fullMedia">
 478 <span class="dangerousLink">{$medialink}</span>$dirmark
 479 <span class="fileInfo">$longDesc</span>
 480 </div>
 481 <div class="mediaWarning">$warning</div>
 482 EOT
 483                                                 );
 484                                 } else {
 485                                         $wgOut->addWikiText( <<<EOT
 486 <div class="fullMedia">
 487 {$medialink}{$dirmark}
 488 <span class="fileInfo">$longDesc</span>
 489 </div>
 490 EOT
 491                                         );
 492                                 }
 493                         }
 494
 495                         if ( !$this->displayImg->isLocal() ) {
 496                                 $this->printSharedImageText();
 497                         }
 498                 } else {
 499                         # Image does not exist
 500                         if ( $wgEnableUploads && $wgUser->isAllowed( 'upload' ) ) {
 501                                 // Only show an upload link if the user can upload
 502                                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 503                                 $nofile = array(
 504                                         'filepage-nofile-link',
 505                                         $uploadTitle->getFullUrl( array( 'wpDestFile' => $this->img->getName() ) )
 506                                 );
 507                         }
 508                         else
 509                         {
 510                                 $nofile = 'filepage-nofile';
 511                         }
 512                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 513                         $wgOut->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
 514                 }
 515         }
 516
 517         /**
 518          * Show a notice that the file is from a shared repository
 519          */
 520         protected function printSharedImageText() {
 521                 global $wgOut;
 522
 523                 $this->loadFile();
 524
 525                 $descUrl = $this->img->getDescriptionUrl();
 526                 $descText = $this->img->getDescriptionText();
 527
 528                 $wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
 529                 $repo = $this->img->getRepo()->getDisplayName();
 530
 531                 if ( $descUrl && $descText && wfMsgNoTrans( 'sharedupload-desc-here' ) !== '-'  ) {
 532                         $wgOut->wrapWikiMsg( $wrap, array( 'sharedupload-desc-here', $repo, $descUrl ) );
 533                 } elseif ( $descUrl && wfMsgNoTrans( 'sharedupload-desc-there' ) !== '-' ) {
 534                         $wgOut->wrapWikiMsg( $wrap, array( 'sharedupload-desc-there', $repo, $descUrl ) );
 535                 } else {
 536                         $wgOut->wrapWikiMsg( $wrap, array( 'sharedupload', $repo ), ''/*BACKCOMPAT*/ );
 537                 }
 538
 539                 if ( $descText ) {
 540                         $this->mExtraDescription = $descText;
 541                 }
 542         }
 543
 544         public function getUploadUrl() {
 545                 $this->loadFile();
 546                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 547                 return $uploadTitle->getFullUrl( array(
 548                         'wpDestFile' => $this->img->getName(),
 549                         'wpForReUpload' => 1
 550                  ) );
 551         }
 552
 553         /**
 554          * Print out the various links at the bottom of the image page, e.g. reupload,
 555          * external editing (and instructions link) etc.
 556          */
 557         protected function uploadLinksBox() {
 558                 global $wgUser, $wgOut, $wgEnableUploads, $wgUseExternalEditor;
 559
 560                 if ( !$wgEnableUploads ) { return; }
 561
 562                 $this->loadFile();
 563                 if ( !$this->img->isLocal() )
 564                         return;
 565
 566                 $sk = $wgUser->getSkin();
 567
 568                 $wgOut->addHTML( "<br /><ul>\n" );
 569
 570                 # "Upload a new version of this file" link
 571                 if ( UploadBase::userCanReUpload( $wgUser, $this->img->name ) ) {
 572                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 573                         $wgOut->addHTML( "<li id=\"mw-imagepage-reupload-link\"><div class=\"plainlinks\">{$ulink}</div></li>\n" );
 574                 }
 575
 576                 # External editing link
 577                 if ( $wgUseExternalEditor ) {
 578                         $elink = $sk->link(
 579                                 $this->mTitle,
 580                                 wfMsgHtml( 'edit-externally' ),
 581                                 array(),
 582                                 array(
 583                                         'action' => 'edit',
 584                                         'externaledit' => 'true',
 585                                         'mode' => 'file'
 586                                 ),
 587                                 array( 'known', 'noclasses' )
 588                         );
 589                         $wgOut->addHTML( '<li id="mw-imagepage-edit-external">' . $elink . ' <small>' . wfMsgExt( 'edit-externally-help', array( 'parseinline' ) ) . "</small></li>\n" );
 590                 }
 591
 592                 $wgOut->addHTML( "</ul>\n" );
 593         }
 594
 595         protected function closeShowImage() { } # For overloading
 596
 597         /**
 598          * If the page we've just displayed is in the "Image" namespace,
 599          * we follow it with an upload history of the image and its usage.
 600          */
 601         protected function imageHistory() {
 602                 global $wgOut;
 603
 604                 $this->loadFile();
 605                 $pager = new ImageHistoryPseudoPager( $this );
 606                 $wgOut->addHTML( $pager->getBody() );
 607
 608                 $this->img->resetHistory(); // free db resources
 609
 610                 # Exist check because we don't want to show this on pages where an image
 611                 # doesn't exist along with the noimage message, that would suck. -ævar
 612                 if ( $this->img->exists() ) {
 613                         $this->uploadLinksBox();
 614                 }
 615         }
 616
 617         protected function imageLinks() {
 618                 global $wgUser, $wgOut, $wgLang;
 619
 620                 $limit = 100;
 621
 622                 $dbr = wfGetDB( DB_SLAVE );
 623
 624                 $res = $dbr->select(
 625                         array( 'imagelinks', 'page' ),
 626                         array( 'page_namespace', 'page_title' ),
 627                         array( 'il_to' => $this->mTitle->getDBkey(), 'il_from = page_id' ),
 628                         __METHOD__,
 629                         array( 'LIMIT' => $limit + 1 )
 630                 );
 631                 $count = $dbr->numRows( $res );
 632                 if ( $count == 0 ) {
 633                         $wgOut->wrapWikiMsg( Html::rawElement( 'div', array ( 'id' => 'mw-imagepage-nolinkstoimage' ), "\n$1\n" ), 'nolinkstoimage' );
 634                         return;
 635                 }
 636
 637                 $wgOut->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 638                 if ( $count <= $limit - 1 ) {
 639                         $wgOut->addWikiMsg( 'linkstoimage', $count );
 640                 } else {
 641                         // More links than the limit. Add a link to [[Special:Whatlinkshere]]
 642                         $wgOut->addWikiMsg( 'linkstoimage-more',
 643                                 $wgLang->formatNum( $limit ),
 644                                 $this->mTitle->getPrefixedDBkey()
 645                         );
 646                 }
 647
 648                 $wgOut->addHTML( Html::openElement( 'ul', array( 'class' => 'mw-imagepage-linkstoimage' ) ) . "\n" );
 649                 $sk = $wgUser->getSkin();
 650                 $count = 0;
 651                 $elements = array();
 652                 while ( $s = $res->fetchObject() ) {
 653                         $count++;
 654                         if ( $count <= $limit ) {
 655                                 // We have not yet reached the extra one that tells us there is more to fetch
 656                                 $elements[] =  $s;
 657                         }
 658                 }
 659
 660                 // Sort the list by namespace:title
 661                 usort ( $elements, array( $this, 'compare' ) );
 662
 663                 // Create links for every element
 664                 foreach( $elements as $element ) {
 665                         $link = $sk->linkKnown( Title::makeTitle( $element->page_namespace, $element->page_title ) );
 666                         $wgOut->addHTML( Html::rawElement(
 667                                                 'li',
 668                                                 array( 'id' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ),
 669                                                 $link
 670                                         ) . "\n"
 671                         );
 672
 673                 };
 674                 $wgOut->addHTML( Html::closeElement( 'ul' ) . "\n" );
 675                 $res->free();
 676
 677                 // Add a links to [[Special:Whatlinkshere]]
 678                 if ( $count > $limit ) {
 679                         $wgOut->addWikiMsg( 'morelinkstoimage', $this->mTitle->getPrefixedDBkey() );
 680                 }
 681                 $wgOut->addHTML( Html::closeElement( 'div' ) . "\n" );
 682         }
 683
 684         protected function imageRedirects() {
 685                 global $wgUser, $wgOut, $wgLang;
 686
 687                 $redirects = $this->getTitle()->getRedirectsHere( NS_FILE );
 688                 if ( count( $redirects ) == 0 ) return;
 689
 690                 $wgOut->addHTML( "<div id='mw-imagepage-section-redirectstofile'>\n" );
 691                 $wgOut->addWikiMsg( 'redirectstofile',
 692                         $wgLang->formatNum( count( $redirects ) )
 693                 );
 694                 $wgOut->addHTML( "<ul class='mw-imagepage-redirectstofile'>\n" );
 695
 696                 $sk = $wgUser->getSkin();
 697                 foreach ( $redirects as $title ) {
 698                         $link = $sk->link(
 699                                 $title,
 700                                 null,
 701                                 array(),
 702                                 array( 'redirect' => 'no' ),
 703                                 array( 'known', 'noclasses' )
 704                         );
 705                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 706                 }
 707                 $wgOut->addHTML( "</ul></div>\n" );
 708
 709         }
 710
 711         protected function imageDupes() {
 712                 global $wgOut, $wgUser, $wgLang;
 713
 714                 $this->loadFile();
 715
 716                 $dupes = $this->getDuplicates();
 717                 if ( count( $dupes ) == 0 ) return;
 718
 719                 $wgOut->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 720                 $wgOut->addWikiMsg( 'duplicatesoffile',
 721                         $wgLang->formatNum( count( $dupes ) ), $this->mTitle->getDBkey()
 722                 );
 723                 $wgOut->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 724
 725                 $sk = $wgUser->getSkin();
 726                 foreach ( $dupes as $file ) {
 727                         $fromSrc = '';
 728                         if ( $file->isLocal() ) {
 729                                 $link = $sk->link(
 730                                         $file->getTitle(),
 731                                         null,
 732                                         array(),
 733                                         array(),
 734                                         array( 'known', 'noclasses' )
 735                                 );
 736                         } else {
 737                                 $link = $sk->makeExternalLink( $file->getDescriptionUrl(),
 738                                         $file->getTitle()->getPrefixedText() );
 739                                 $fromSrc = wfMsg( 'shared-repo-from', $file->getRepo()->getDisplayName() );
 740                         }
 741                         $wgOut->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
 742                 }
 743                 $wgOut->addHTML( "</ul></div>\n" );
 744         }
 745
 746         /**
 747          * Delete the file, or an earlier version of it
 748          */
 749         public function delete() {
 750                 global $wgUploadMaintenance;
 751                 if ( $wgUploadMaintenance && $this->mTitle && $this->mTitle->getNamespace() == NS_FILE ) {
 752                         global $wgOut;
 753                         $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n", array( 'filedelete-maintenance' ) );
 754                         return;
 755                 }
 756
 757                 $this->loadFile();
 758                 if ( !$this->img->exists() || !$this->img->isLocal() || $this->img->getRedirected() ) {
 759                         // Standard article deletion
 760                         parent::delete();
 761                         return;
 762                 }
 763                 $deleter = new FileDeleteForm( $this->img );
 764                 $deleter->execute();
 765         }
 766
 767         /**
 768          * Revert the file to an earlier version
 769          */
 770         public function revert() {
 771                 $this->loadFile();
 772                 $reverter = new FileRevertForm( $this->img );
 773                 $reverter->execute();
 774         }
 775
 776         /**
 777          * Override handling of action=purge
 778          */
 779         public function doPurge() {
 780                 $this->loadFile();
 781                 if ( $this->img->exists() ) {
 782                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 783                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 784                         $update->doUpdate();
 785                         $this->img->upgradeRow();
 786                         $this->img->purgeCache();
 787                 } else {
 788                         wfDebug( "ImagePage::doPurge no image for " . $this->img->getName() . "; limiting purge to cache only\n" );
 789                         // even if the file supposedly doesn't exist, force any cached information
 790                         // to be updated (in case the cached information is wrong)
 791                         $this->img->purgeCache();
 792                 }
 793                 parent::doPurge();
 794         }
 795
 796         /**
 797          * Display an error with a wikitext description
 798          */
 799         function showError( $description ) {
 800                 global $wgOut;
 801                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 802                 $wgOut->setRobotPolicy( "noindex,nofollow" );
 803                 $wgOut->setArticleRelated( false );
 804                 $wgOut->enableClientCache( false );
 805                 $wgOut->addWikiText( $description );
 806         }
 807
 808
 809         /**
 810          * Callback for usort() to do link sorts by (namespace, title)
 811          * Function copied from Title::compare()
 812          *
 813          * @param $a object page to compare with
 814          * @param $b object page to compare with
 815          * @return Integer: result of string comparison, or namespace comparison
 816          */
 817         protected function compare( $a, $b ) {
 818                 if ( $a->page_namespace == $b->page_namespace ) {
 819                         return strcmp( $a->page_title, $b->page_title );
 820                 } else {
 821                         return $a->page_namespace - $b->page_namespace;
 822                 }
 823         }
 824 }
 825
 826 /**
 827  * Builds the image revision log shown on image pages
 828  *
 829  * @ingroup Media
 830  */
 831 class ImageHistoryList {
 832
 833         protected $imagePage, $img, $skin, $title, $repo, $showThumb;
 834
 835         public function __construct( $imagePage ) {
 836                 global $wgUser, $wgShowArchiveThumbnails;
 837                 $this->skin = $wgUser->getSkin();
 838                 $this->current = $imagePage->getFile();
 839                 $this->img = $imagePage->getDisplayedFile();
 840                 $this->title = $imagePage->getTitle();
 841                 $this->imagePage = $imagePage;
 842                 $this->showThumb = $wgShowArchiveThumbnails && $this->img->canRender();
 843         }
 844
 845         public function getImagePage() {
 846                 return $this->imagePage;
 847         }
 848
 849         public function getSkin() {
 850                 return $this->skin;
 851         }
 852
 853         public function getFile() {
 854                 return $this->img;
 855         }
 856
 857         public function beginImageHistoryList( $navLinks = '' ) {
 858                 global $wgOut, $wgUser;
 859                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) ) . "\n"
 860                         . "<div id=\"mw-imagepage-section-filehistory\">\n"
 861                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 862                         . $navLinks . "\n"
 863                         . Xml::openElement( 'table', array( 'class' => 'wikitable filehistory' ) ) . "\n"
 864                         . '<tr><td></td>'
 865                         . ( $this->current->isLocal() && ( $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deletedhistory' ) ) ? '<td></td>' : '' )
 866                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 867                         . ( $this->showThumb ? '<th>' . wfMsgHtml( 'filehist-thumb' ) . '</th>' : '' )
 868                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 869                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 870                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 871                         . "</tr>\n";
 872         }
 873
 874         public function endImageHistoryList( $navLinks = '' ) {
 875                 return "</table>\n$navLinks\n</div>\n";
 876         }
 877
 878         public function imageHistoryLine( $iscur, $file ) {
 879                 global $wgUser, $wgLang;
 880
 881                 $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
 882                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 883                 $user = $file->getUser( 'id' );
 884                 $usertext = $file->getUser( 'text' );
 885                 $description = $file->getDescription();
 886
 887                 $local = $this->current->isLocal();
 888                 $row = $selected = '';
 889
 890                 // Deletion link
 891                 if ( $local && ( $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deletedhistory' ) ) ) {
 892                         $row .= '<td>';
 893                         # Link to remove from history
 894                         if ( $wgUser->isAllowed( 'delete' ) ) {
 895                                 $q = array( 'action' => 'delete' );
 896                                 if ( !$iscur )
 897                                         $q['oldimage'] = $img;
 898                                 $row .= $this->skin->link(
 899                                         $this->title,
 900                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 901                                         array(), $q, array( 'known' )
 902                                 );
 903                         }
 904                         # Link to hide content. Don't show useless link to people who cannot hide revisions.
 905                         $canHide = $wgUser->isAllowed( 'deleterevision' );
 906                         if ( $canHide || ( $wgUser->isAllowed( 'deletedhistory' ) && $file->getVisibility() ) ) {
 907                                 if ( $wgUser->isAllowed( 'delete' ) ) {
 908                                         $row .= '<br />';
 909                                 }
 910                                 // If file is top revision or locked from this user, don't link
 911                                 if ( $iscur || !$file->userCan( File::DELETED_RESTRICTED ) ) {
 912                                         $del = $this->skin->revDeleteLinkDisabled( $canHide );
 913                                 } else {
 914                                         list( $ts, $name ) = explode( '!', $img, 2 );
 915                                         $query = array(
 916                                                 'type'   => 'oldimage',
 917                                                 'target' => $this->title->getPrefixedText(),
 918                                                 'ids'    => $ts,
 919                                         );
 920                                         $del = $this->skin->revDeleteLink( $query,
 921                                                 $file->isDeleted( File::DELETED_RESTRICTED ), $canHide );
 922                                 }
 923                                 $row .= $del;
 924                         }
 925                         $row .= '</td>';
 926                 }
 927
 928                 // Reversion link/current indicator
 929                 $row .= '<td>';
 930                 if ( $iscur ) {
 931                         $row .= wfMsgHtml( 'filehist-current' );
 932                 } elseif ( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 933                         if ( $file->isDeleted( File::DELETED_FILE ) ) {
 934                                 $row .= wfMsgHtml( 'filehist-revert' );
 935                         } else {
 936                                 $row .= $this->skin->link(
 937                                         $this->title,
 938                                         wfMsgHtml( 'filehist-revert' ),
 939                                         array(),
 940                                         array(
 941                                                 'action' => 'revert',
 942                                                 'oldimage' => $img,
 943                                                 'wpEditToken' => $wgUser->editToken( $img )
 944                                         ),
 945                                         array( 'known', 'noclasses' )
 946                                 );
 947                         }
 948                 }
 949                 $row .= '</td>';
 950
 951                 // Date/time and image link
 952                 if ( $file->getTimestamp() === $this->img->getTimestamp() ) {
 953                         $selected = "class='filehistory-selected'";
 954                 }
 955                 $row .= "<td $selected style='white-space: nowrap;'>";
 956                 if ( !$file->userCan( File::DELETED_FILE ) ) {
 957                         # Don't link to unviewable files
 958                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 959                 } elseif ( $file->isDeleted( File::DELETED_FILE ) ) {
 960                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 961                         # Make a link to review the image
 962                         $url = $this->skin->link(
 963                                 $revdel,
 964                                 $wgLang->timeAndDate( $timestamp, true ),
 965                                 array(),
 966                                 array(
 967                                         'target' => $this->title->getPrefixedText(),
 968                                         'file' => $img,
 969                                         'token' => $wgUser->editToken( $img )
 970                                 ),
 971                                 array( 'known', 'noclasses' )
 972                         );
 973                         $row .= '<span class="history-deleted">' . $url . '</span>';
 974                 } else {
 975                         $url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
 976                         $row .= Xml::element( 'a', array( 'href' => $url ), $wgLang->timeAndDate( $timestamp, true ) );
 977                 }
 978                 $row .= "</td>";
 979
 980                 // Thumbnail
 981                 if ( $this->showThumb ) {
 982                         $row .= '<td>' . $this->getThumbForLine( $file ) . '</td>';
 983                 }
 984
 985                 // Image dimensions + size
 986                 $row .= '<td>';
 987                 $row .= htmlspecialchars( $file->getDimensionsString() );
 988                 $row .= " <span style='white-space: nowrap;'>(" . $this->skin->formatSize( $file->getSize() ) . ')</span>';
 989                 $row .= '</td>';
 990
 991                 // Uploading user
 992                 $row .= '<td>';
 993                 if ( $local ) {
 994                         // Hide deleted usernames
 995                         if ( $file->isDeleted( File::DELETED_USER ) ) {
 996                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 997                         } else {
 998                                 $row .= $this->skin->userLink( $user, $usertext ) . " <span style='white-space: nowrap;'>" .
 999                                         $this->skin->userToolLinks( $user, $usertext ) . "</span>";
1000                         }
1001                 } else {
1002                         $row .= htmlspecialchars( $usertext );
1003                 }
1004                 $row .= '</td><td>';
1005
1006                 // Don't show deleted descriptions
1007                 if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
1008                         $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
1009                 } else {
1010                         $row .= $this->skin->commentBlock( $description, $this->title );
1011                 }
1012                 $row .= '</td>';
1013
1014                 wfRunHooks( 'ImagePageFileHistoryLine', array( $this, $file, &$row, &$rowClass ) );
1015                 $classAttr = $rowClass ? " class='$rowClass'" : "";
1016
1017                 return "<tr{$classAttr}>{$row}</tr>\n";
1018         }
1019
1020         protected function getThumbForLine( $file ) {
1021                 global $wgLang;
1022
1023                 if ( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE ) && !$file->isDeleted( File::DELETED_FILE ) ) {
1024                         $params = array(
1025                                 'width' => '120',
1026                                 'height' => '120',
1027                         );
1028                         $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
1029
1030                         $thumbnail = $file->transform( $params );
1031                         $options = array(
1032                                 'alt' => wfMsg( 'filehist-thumbtext',
1033                                         $wgLang->timeAndDate( $timestamp, true ),
1034                                         $wgLang->date( $timestamp, true ),
1035                                         $wgLang->time( $timestamp, true ) ),
1036                                 'file-link' => true,
1037                         );
1038
1039                         if ( !$thumbnail ) return wfMsgHtml( 'filehist-nothumb' );
1040
1041                         return $thumbnail->toHtml( $options );
1042                 } else {
1043                         return wfMsgHtml( 'filehist-nothumb' );
1044                 }
1045         }
1046 }
1047
1048 class ImageHistoryPseudoPager extends ReverseChronologicalPager {
1049         function __construct( $imagePage ) {
1050                 parent::__construct();
1051                 $this->mImagePage = $imagePage;
1052                 $this->mTitle = clone ( $imagePage->getTitle() );
1053                 $this->mTitle->setFragment( '#filehistory' );
1054                 $this->mImg = null;
1055                 $this->mHist = array();
1056                 $this->mRange = array( 0, 0 ); // display range
1057         }
1058
1059         function getTitle() {
1060                 return $this->mTitle;
1061         }
1062
1063         function getQueryInfo() {
1064                 return false;
1065         }
1066
1067         function getIndexField() {
1068                 return '';
1069         }
1070
1071         function formatRow( $row ) {
1072                 return '';
1073         }
1074
1075         function getBody() {
1076                 $s = '';
1077                 $this->doQuery();
1078                 if ( count( $this->mHist ) ) {
1079                         $list = new ImageHistoryList( $this->mImagePage );
1080                         # Generate prev/next links
1081                         $navLink = $this->getNavigationBar();
1082                         $s = $list->beginImageHistoryList( $navLink );
1083                         // Skip rows there just for paging links
1084                         for ( $i = $this->mRange[0]; $i <= $this->mRange[1]; $i++ ) {
1085                                 $file = $this->mHist[$i];
1086                                 $s .= $list->imageHistoryLine( !$file->isOld(), $file );
1087                         }
1088                         $s .= $list->endImageHistoryList( $navLink );
1089                 }
1090                 return $s;
1091         }
1092
1093         function doQuery() {
1094                 if ( $this->mQueryDone ) return;
1095                 $this->mImg = $this->mImagePage->getFile(); // ensure loading
1096                 if ( !$this->mImg->exists() ) {
1097                         return;
1098                 }
1099                 $queryLimit = $this->mLimit + 1; // limit plus extra row
1100                 if ( $this->mIsBackwards ) {
1101                         // Fetch the file history
1102                         $this->mHist = $this->mImg->getHistory( $queryLimit, null, $this->mOffset, false );
1103                         // The current rev may not meet the offset/limit
1104                         $numRows = count( $this->mHist );
1105                         if ( $numRows <= $this->mLimit && $this->mImg->getTimestamp() > $this->mOffset ) {
1106                                 $this->mHist = array_merge( array( $this->mImg ), $this->mHist );
1107                         }
1108                 } else {
1109                         // The current rev may not meet the offset
1110                         if ( !$this->mOffset || $this->mImg->getTimestamp() < $this->mOffset ) {
1111                                 $this->mHist[] = $this->mImg;
1112                         }
1113                         // Old image versions (fetch extra row for nav links)
1114                         $oiLimit = count( $this->mHist ) ? $this->mLimit : $this->mLimit + 1;
1115                         // Fetch the file history
1116                         $this->mHist = array_merge( $this->mHist,
1117                                 $this->mImg->getHistory( $oiLimit, $this->mOffset, null, false ) );
1118                 }
1119                 $numRows = count( $this->mHist ); // Total number of query results
1120                 if ( $numRows ) {
1121                         # Index value of top item in the list
1122                         $firstIndex = $this->mIsBackwards ?
1123                                 $this->mHist[$numRows - 1]->getTimestamp() : $this->mHist[0]->getTimestamp();
1124                         # Discard the extra result row if there is one
1125                         if ( $numRows > $this->mLimit && $numRows > 1 ) {
1126                                 if ( $this->mIsBackwards ) {
1127                                         # Index value of item past the index
1128                                         $this->mPastTheEndIndex = $this->mHist[0]->getTimestamp();
1129                                         # Index value of bottom item in the list
1130                                         $lastIndex = $this->mHist[1]->getTimestamp();
1131                                         # Display range
1132                                         $this->mRange = array( 1, $numRows - 1 );
1133                                 } else {
1134                                         # Index value of item past the index
1135                                         $this->mPastTheEndIndex = $this->mHist[$numRows - 1]->getTimestamp();
1136                                         # Index value of bottom item in the list
1137                                         $lastIndex = $this->mHist[$numRows - 2]->getTimestamp();
1138                                         # Display range
1139                                         $this->mRange = array( 0, $numRows - 2 );
1140                                 }
1141                         } else {
1142                                 # Setting indexes to an empty string means that they will be
1143                                 # omitted if they would otherwise appear in URLs. It just so
1144                                 # happens that this  is the right thing to do in the standard
1145                                 # UI, in all the relevant cases.
1146                                 $this->mPastTheEndIndex = '';
1147                                 # Index value of bottom item in the list
1148                                 $lastIndex = $this->mIsBackwards ?
1149                                         $this->mHist[0]->getTimestamp() : $this->mHist[$numRows - 1]->getTimestamp();
1150                                 # Display range
1151                                 $this->mRange = array( 0, $numRows - 1 );
1152                         }
1153                 } else {
1154                         $firstIndex = '';
1155                         $lastIndex = '';
1156                         $this->mPastTheEndIndex = '';
1157                 }
1158                 if ( $this->mIsBackwards ) {
1159                         $this->mIsFirst = ( $numRows < $queryLimit );
1160                         $this->mIsLast = ( $this->mOffset == '' );
1161                         $this->mLastShown = $firstIndex;
1162                         $this->mFirstShown = $lastIndex;
1163                 } else {
1164                         $this->mIsFirst = ( $this->mOffset == '' );
1165                         $this->mIsLast = ( $numRows < $queryLimit );
1166                         $this->mLastShown = $lastIndex;
1167                         $this->mFirstShown = $firstIndex;
1168                 }
1169                 $this->mQueryDone = true;
1170         }
1171 }