includes/ImagePage.php

   1 <?php
   2 /**
   3  */
   4
   5 /**
   6  *
   7  */
   8 if( !defined( 'MEDIAWIKI' ) )
   9         die( 1 );
  10
  11 /**
  12  * Special handling for image description pages
  13  *
  14  * @addtogroup Media
  15  */
  16 class ImagePage extends Article {
  17
  18         /* private */ var $img;  // Image object this page is shown for
  19         /* private */ var $repo;
  20         var $mExtraDescription = false;
  21
  22         function __construct( $title, $time = false ) {
  23                 parent::__construct( $title );
  24                 $this->img = wfFindFile( $this->mTitle, $time );
  25                 if ( !$this->img ) {
  26                         $this->img = wfLocalFile( $this->mTitle );
  27                         $this->current = $this->img;
  28                 } else {
  29                         $this->current = $time ? wfLocalFile( $this->mTitle ) : $this->img;
  30                 }
  31                 $this->repo = $this->img->repo;
  32         }
  33
  34         /**
  35          * Handler for action=render
  36          * Include body text only; none of the image extras
  37          */
  38         function render() {
  39                 global $wgOut;
  40                 $wgOut->setArticleBodyOnly( true );
  41                 parent::view();
  42         }
  43
  44         function view() {
  45                 global $wgOut, $wgShowEXIF, $wgRequest, $wgUser;
  46
  47                 $diff = $wgRequest->getVal( 'diff' );
  48                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  49
  50                 if ( $this->mTitle->getNamespace() != NS_IMAGE || ( isset( $diff ) && $diffOnly ) )
  51                         return Article::view();
  52
  53                 if ($wgShowEXIF && $this->img->exists()) {
  54                         // FIXME: bad interface, see note on MediaHandler::formatMetadata().
  55                         $formattedMetadata = $this->img->formatMetadata();
  56                         $showmeta = $formattedMetadata !== false;
  57                 } else {
  58                         $showmeta = false;
  59                 }
  60
  61                 if ($this->img->exists())
  62                         $wgOut->addHTML($this->showTOC($showmeta));
  63
  64                 $this->openShowImage();
  65
  66                 # No need to display noarticletext, we use our own message, output in openShowImage()
  67                 if ( $this->getID() ) {
  68                         Article::view();
  69                 } else {
  70                         # Just need to set the right headers
  71                         $wgOut->setArticleFlag( true );
  72                         $wgOut->setRobotpolicy( 'noindex,nofollow' );
  73                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  74                         $this->viewUpdates();
  75                 }
  76
  77                 # Show shared description, if needed
  78                 if ( $this->mExtraDescription ) {
  79                         $fol = wfMsgNoTrans( 'shareddescriptionfollows' );
  80                         if( $fol != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $fol ) ) {
  81                                 $wgOut->addWikiText( $fol );
  82                         }
  83                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  84                 } else {
  85                         $this->checkSharedConflict();
  86                 }
  87
  88                 $this->closeShowImage();
  89                 $this->imageHistory();
  90                 $this->imageLinks();
  91
  92                 if ( $showmeta ) {
  93                         global $wgStylePath, $wgStyleVersion;
  94                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  95                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  96                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
  97                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
  98                         $wgOut->addHTML(
  99                                 "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js?$wgStyleVersion\"></script>\n" .
 100                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
 101                 }
 102         }
 103
 104         /**
 105          * Create the TOC
 106          *
 107          * @access private
 108          *
 109          * @param bool $metadata Whether or not to show the metadata link
 110          * @return string
 111          */
 112         function showTOC( $metadata ) {
 113                 global $wgLang;
 114                 $r = '<ul id="filetoc">
 115                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 116                         <li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>
 117                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 118                         ($metadata ? ' <li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 119                 </ul>';
 120                 return $r;
 121         }
 122
 123         /**
 124          * Make a table with metadata to be shown in the output page.
 125          *
 126          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 127          *
 128          * @access private
 129          *
 130          * @param array $exif The array containing the EXIF data
 131          * @return string
 132          */
 133         function makeMetadataTable( $metadata ) {
 134                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 135                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 136                 foreach ( $metadata as $type => $stuff ) {
 137                         foreach ( $stuff as $v ) {
 138                                 $class = Sanitizer::escapeId( $v['id'] );
 139                                 if( $type == 'collapsed' ) {
 140                                         $class .= ' collapsable';
 141                                 }
 142                                 $r .= "|- class=\"$class\"\n";
 143                                 $r .= "!| {$v['name']}\n";
 144                                 $r .= "|| {$v['value']}\n";
 145                         }
 146                 }
 147                 $r .= '|}';
 148                 return $r;
 149         }
 150
 151         /**
 152          * Overloading Article's getContent method.
 153          *
 154          * Omit noarticletext if sharedupload; text will be fetched from the
 155          * shared upload server if possible.
 156          */
 157         function getContent() {
 158                 if( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 159                         return '';
 160                 }
 161                 return Article::getContent();
 162         }
 163
 164         function openShowImage() {
 165                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang, $wgContLang;
 166
 167                 $full_url  = $this->img->getURL();
 168                 $linkAttribs = false;
 169                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 170                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 171                         $sizeSel = User::getDefaultOption( 'imagesize' );
 172
 173                         // The user offset might still be incorrect, specially if
 174                         // $wgImageLimits got changed (see bug #8858).
 175                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 176                                 // Default to the first offset in $wgImageLimits
 177                                 $sizeSel = 0;
 178                         }
 179                 }
 180                 $max = $wgImageLimits[$sizeSel];
 181                 $maxWidth = $max[0];
 182                 $maxHeight = $max[1];
 183                 $sk = $wgUser->getSkin();
 184                 $dirmark = $wgContLang->getDirMark();
 185
 186                 if ( $this->img->exists() ) {
 187                         # image
 188                         $page = $wgRequest->getIntOrNull( 'page' );
 189                         if ( is_null( $page ) ) {
 190                                 $params = array();
 191                                 $page = 1;
 192                         } else {
 193                                 $params = array( 'page' => $page );
 194                         }
 195                         $width_orig = $this->img->getWidth();
 196                         $width = $width_orig;
 197                         $height_orig = $this->img->getHeight();
 198                         $height = $height_orig;
 199                         $mime = $this->img->getMimeType();
 200                         $showLink = false;
 201                         $linkAttribs = array( 'href' => $full_url );
 202                         $longDesc = $this->img->getLongDesc();
 203
 204                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this , &$wgOut ) )       ;
 205
 206                         if ( $this->img->allowInlineDisplay() ) {
 207                                 # image
 208
 209                                 # "Download high res version" link below the image
 210                                 #$msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->img->getSize() ), $mime );
 211                                 # We'll show a thumbnail of this image
 212                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 213                                         # Calculate the thumbnail size.
 214                                         # First case, the limiting factor is the width, not the height.
 215                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 216                                                 $height = round( $height * $maxWidth / $width);
 217                                                 $width = $maxWidth;
 218                                                 # Note that $height <= $maxHeight now.
 219                                         } else {
 220                                                 $newwidth = floor( $width * $maxHeight / $height);
 221                                                 $height = round( $height * $newwidth / $width );
 222                                                 $width = $newwidth;
 223                                                 # Note that $height <= $maxHeight now, but might not be identical
 224                                                 # because of rounding.
 225                                         }
 226                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 227                                         $msgsmall = wfMsgExt( 'show-big-image-thumb',
 228                                                 array( 'parseinline' ), $wgLang->formatNum( $width ), $wgLang->formatNum( $height ) );
 229                                 } else {
 230                                         # Image is small enough to show full size on image page
 231                                         $msgbig = htmlspecialchars( $this->img->getName() );
 232                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 233                                 }
 234
 235                                 $params['width'] = $width;
 236                                 $thumbnail = $this->img->transform( $params );
 237
 238                                 $anchorclose = "<br />";
 239                                 if( $this->img->mustRender() ) {
 240                                         $showLink = true;
 241                                 } else {
 242                                         $anchorclose .=
 243                                                 $msgsmall .
 244                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 245                                 }
 246
 247                                 if ( $this->img->isMultipage() ) {
 248                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 249                                 }
 250
 251                                 if ( $thumbnail ) {
 252                                         $options = array(
 253                                                 'alt' => $this->img->getTitle()->getPrefixedText(),
 254                                                 'file-link' => true,
 255                                         );
 256                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 257                                                 $thumbnail->toHtml( $options ) .
 258                                                 $anchorclose . '</div>' );
 259                                 }
 260
 261                                 if ( $this->img->isMultipage() ) {
 262                                         $count = $this->img->pageCount();
 263
 264                                         if ( $page > 1 ) {
 265                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 266                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 267                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 268                                                         array( 'page' => $page - 1 ) );
 269                                         } else {
 270                                                 $thumb1 = '';
 271                                         }
 272
 273                                         if ( $page < $count ) {
 274                                                 $label = wfMsg( 'imgmultipagenext' );
 275                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 276                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 277                                                         array( 'page' => $page + 1 ) );
 278                                         } else {
 279                                                 $thumb2 = '';
 280                                         }
 281
 282                                         global $wgScript;
 283                                         $select = '<form name="pageselector" action="' .
 284                                                 htmlspecialchars( $wgScript ) .
 285                                                 '" method="get" onchange="document.pageselector.submit();">' .
 286                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 287                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 288                                                 ' <select id="pageselector" name="page">';
 289                                         for ( $i=1; $i <= $count; $i++ ) {
 290                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 291                                                         $i == $page );
 292                                         }
 293                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 294                                                 '<input type="submit" value="' .
 295                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 296
 297                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 298                                                 "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 299                                 }
 300                         } else {
 301                                 #if direct link is allowed but it's not a renderable image, show an icon.
 302                                 if ($this->img->isSafeFile()) {
 303                                         $icon= $this->img->iconThumb();
 304
 305                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 306                                         $icon->toHtml( array( 'desc-link' => true ) ) .
 307                                         '</div>' );
 308                                 }
 309
 310                                 $showLink = true;
 311                         }
 312
 313
 314                         if ($showLink) {
 315                                 $filename = wfEscapeWikiText( $this->img->getName() );
 316
 317                                 if (!$this->img->isSafeFile()) {
 318                                         $warning = wfMsgNoTrans( 'mediawarning' );
 319                                         $wgOut->addWikiText( <<<EOT
 320 <div class="fullMedia">
 321 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 322 <span class="fileInfo"> $longDesc</span>
 323 </div>
 324
 325 <div class="mediaWarning">$warning</div>
 326 EOT
 327                                                 );
 328                                 } else {
 329                                         $wgOut->addWikiText( <<<EOT
 330 <div class="fullMedia">
 331 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 332 </div>
 333 EOT
 334                                                 );
 335                                 }
 336                         }
 337
 338                         if(!$this->img->isLocal()) {
 339                                 $this->printSharedImageText();
 340                         }
 341                 } else {
 342                         # Image does not exist
 343
 344                         $title = SpecialPage::getTitleFor( 'Upload' );
 345                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 346                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 347                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 348                 }
 349         }
 350
 351         /**
 352          * Show a notice that the file is from a shared repository
 353          */
 354         function printSharedImageText() {
 355                 global $wgOut, $wgUser;
 356
 357                 $descUrl = $this->img->getDescriptionUrl();
 358                 $descText = $this->img->getDescriptionText();
 359                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml( 'sharedupload' );
 360                 if ( $descUrl ) {
 361                         $sk = $wgUser->getSkin();
 362                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadwiki-linktext' ) );
 363                         $msg = ( $descText ) ? 'shareduploadwiki-desc' : 'shareduploadwiki';
 364                         $msg = wfMsgExt( $msg, array( 'parseinline', 'replaceafter' ), $link );
 365                         if ( $msg != '-' ) {
 366                                 # Show message only if not voided by local sysops
 367                                 $s .= $msg;
 368                         }
 369                 }
 370                 $s .= "</div>";
 371                 $wgOut->addHTML( $s );
 372
 373                 if ( $descText ) {
 374                         $this->mExtraDescription = $descText;
 375                 }
 376         }
 377
 378         function checkSharedConflict() {
 379                 global $wgOut, $wgUser, $wgUseSharedUploads;
 380                 if( !$wgUseSharedUploads ) {
 381                         return;
 382                 }
 383                 if( $this->repo->getName() != 'local' ) {
 384                         return;
 385                 }
 386
 387                 $repo = RepoGroup::singleton()->getRepoByName( 'shared' );
 388                 $dupfile = $repo->newFile( $this->img->getTitle() );
 389                 if( !$dupfile->exists() ) {
 390                         return;
 391                 }
 392                 $same = (
 393                         ($this->img->getSha1() == $dupfile->getSha1()) &&
 394                         ($this->img->getSize() == $dupfile->getSize())
 395                 );
 396
 397                 $sk = $wgUser->getSkin();
 398                 $descUrl = $dupfile->getDescriptionUrl();
 399                 if( $same ) {
 400                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadduplicate-linktext' ) );
 401                         $wgOut->addHTML( '<div id="shared-image-dup">' . wfMsgWikiHtml( 'shareduploadduplicate', $link ) . '</div>' );
 402                 } else {
 403                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadconflict-linktext' ) );
 404                         $wgOut->addHTML( '<div id="shared-image-conflict">' . wfMsgWikiHtml( 'shareduploadconflict', $link ) . '</div>' );
 405                 }
 406         }
 407
 408         function getUploadUrl() {
 409                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 410                 return $uploadTitle->getFullUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 411         }
 412
 413         /**
 414          * Print out the various links at the bottom of the image page, e.g. reupload,
 415          * external editing (and instructions link) etc.
 416          */
 417         function uploadLinksBox() {
 418                 global $wgUser, $wgOut;
 419
 420                 if( !$this->img->isLocal() )
 421                         return;
 422
 423                 $sk = $wgUser->getSkin();
 424
 425                 $wgOut->addHtml( '<br /><ul>' );
 426
 427                 # "Upload a new version of this file" link
 428                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 429                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 430                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 431                 }
 432
 433                 # Link to Special:FileDuplicateSearch
 434                 $dupeLink = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'FileDuplicateSearch', $this->mTitle->getDBkey() ), wfMsgHtml( 'imagepage-searchdupe' ) );
 435                 $wgOut->addHtml( "<li>{$dupeLink}</li>" );
 436
 437                 # External editing link
 438                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 439                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 440
 441                 $wgOut->addHtml( '</ul>' );
 442         }
 443
 444         function closeShowImage()
 445         {
 446                 # For overloading
 447
 448         }
 449
 450         /**
 451          * If the page we've just displayed is in the "Image" namespace,
 452          * we follow it with an upload history of the image and its usage.
 453          */
 454         function imageHistory()
 455         {
 456                 global $wgUser, $wgOut, $wgUseExternalEditor;
 457
 458                 $sk = $wgUser->getSkin();
 459
 460                 if ( $this->img->exists() ) {
 461                         $list = new ImageHistoryList( $sk, $this->current );
 462                         $file = $this->current;
 463                         $dims = $file->getDimensionsString();
 464                         $s = $list->beginImageHistoryList() .
 465                                 $list->imageHistoryLine( true, $file );
 466                         // old image versions
 467                         $hist = $this->img->getHistory();
 468                         foreach( $hist as $file ) {
 469                                 $dims = $file->getDimensionsString();
 470                                 $s .= $list->imageHistoryLine( false, $file );
 471                         }
 472                         $s .= $list->endImageHistoryList();
 473                 } else { $s=''; }
 474                 $wgOut->addHTML( $s );
 475
 476                 $this->img->resetHistory();     // free db resources
 477
 478                 # Exist check because we don't want to show this on pages where an image
 479                 # doesn't exist along with the noimage message, that would suck. -ævar
 480                 if( $wgUseExternalEditor && $this->img->exists() ) {
 481                         $this->uploadLinksBox();
 482                 }
 483
 484         }
 485
 486         function imageLinks()
 487         {
 488                 global $wgUser, $wgOut;
 489
 490                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 491
 492                 $dbr = wfGetDB( DB_SLAVE );
 493                 $page = $dbr->tableName( 'page' );
 494                 $imagelinks = $dbr->tableName( 'imagelinks' );
 495
 496                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 497                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 498                 $sql = $dbr->limitResult($sql, 500, 0);
 499                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 500
 501                 if ( 0 == $dbr->numRows( $res ) ) {
 502                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 503                         return;
 504                 }
 505                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 506
 507                 $sk = $wgUser->getSkin();
 508                 while ( $s = $dbr->fetchObject( $res ) ) {
 509                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 510                         $link = $sk->makeKnownLinkObj( $name, "" );
 511                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 512                 }
 513                 $wgOut->addHTML( "</ul>\n" );
 514         }
 515
 516         /**
 517          * Delete the file, or an earlier version of it
 518          */
 519         public function delete() {
 520                 if( !$this->img->exists() || !$this->img->isLocal() ) {
 521                         // Standard article deletion
 522                         Article::delete();
 523                         return;
 524                 }
 525                 $deleter = new FileDeleteForm( $this->img );
 526                 $deleter->execute();
 527         }
 528
 529         /**
 530          * Revert the file to an earlier version
 531          */
 532         public function revert() {
 533                 $reverter = new FileRevertForm( $this->img );
 534                 $reverter->execute();
 535         }
 536
 537         /**
 538          * Override handling of action=purge
 539          */
 540         function doPurge() {
 541                 if( $this->img->exists() ) {
 542                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 543                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 544                         $update->doUpdate();
 545                         $this->img->upgradeRow();
 546                         $this->img->purgeCache();
 547                 } else {
 548                         wfDebug( "ImagePage::doPurge no image\n" );
 549                 }
 550                 parent::doPurge();
 551         }
 552
 553         /**
 554          * Display an error with a wikitext description
 555          */
 556         function showError( $description ) {
 557                 global $wgOut;
 558                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 559                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 560                 $wgOut->setArticleRelated( false );
 561                 $wgOut->enableClientCache( false );
 562                 $wgOut->addWikiText( $description );
 563         }
 564
 565 }
 566
 567 /**
 568  * Builds the image revision log shown on image pages
 569  *
 570  * @addtogroup Media
 571  */
 572 class ImageHistoryList {
 573
 574         protected $img, $skin, $title, $repo;
 575
 576         public function __construct( $skin, $img ) {
 577                 $this->skin = $skin;
 578                 $this->img = $img;
 579                 $this->title = $img->getTitle();
 580         }
 581
 582         public function beginImageHistoryList() {
 583                 global $wgOut, $wgUser;
 584                 $deleteColumn = $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deleterevision' );
 585                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 586                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 587                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 588                         . '<tr><td></td>'
 589                         . ( $this->img->isLocal() && $deleteColumn ? '<td></td>' : '' )
 590                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 591                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 592                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 593                         . '<th class="mw-imagepage-filesize">' . wfMsgHtml( 'filehist-filesize' ) . '</th>'
 594                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 595                         . "</tr>\n";
 596         }
 597
 598         public function endImageHistoryList() {
 599                 return "</table>\n";
 600         }
 601
 602         public function imageHistoryLine( $iscur, $file ) {
 603                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 604
 605                 $timestamp = wfTimestamp(TS_MW, $file->getTimestamp());
 606                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 607                 $user = $file->getUser('id');
 608                 $usertext = $file->getUser('text');
 609                 $size = $file->getSize();
 610                 $description = $file->getDescription();
 611                 $dims = $file->getDimensionsString();
 612                 $sha1 = $file->getSha1();
 613
 614                 $local = $this->img->isLocal();
 615                 $row = '';
 616
 617                 // Deletion link
 618                 if( $local && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ) {
 619                         $row .= '<td>';
 620                         # Link to remove from history
 621                         if( $wgUser->isAllowed( 'delete' ) ) {
 622                                 $q = array();
 623                                 $q[] = 'action=delete';
 624                                 if( !$iscur )
 625                                         $q[] = 'oldimage=' . urlencode( $img );
 626                                 $row .= $this->skin->makeKnownLinkObj(
 627                                         $this->title,
 628                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 629                                         implode( '&', $q )
 630                                 );
 631                                 $row .= '<br/>';
 632                         }
 633                         # Link to hide content
 634                         if( $wgUser->isAllowed( 'deleterevision' ) ) {
 635                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 636                                 // If file is top revision or locked from this user, don't link
 637                                 if( $iscur || !$file->userCan(File::DELETED_RESTRICTED) ) {
 638                                         $del = wfMsgHtml( 'rev-delundel' );
 639                                 } else {
 640                                         // If the file was hidden, link to sha-1
 641                                         list($ts,$name) = explode('!',$img,2);
 642                                         $del = $this->skin->makeKnownLinkObj( $revdel,  wfMsg( 'rev-delundel' ),
 643                                                 'target=' . urlencode( $wgTitle->getPrefixedText() ) .
 644                                                 '&oldimage=' . urlencode( $ts ) );
 645                                         // Bolden oversighted content
 646                                         if( $file->isDeleted(File::DELETED_RESTRICTED) )
 647                                                 $del = "<strong>$del</strong>";
 648                                 }
 649                                 $row .= "<tt><small>$del</small></tt>";
 650                         }
 651                         $row .= '</td>';
 652                 }
 653
 654                 // Reversion link/current indicator
 655                 $row .= '<td>';
 656                 if( $iscur ) {
 657                         $row .= wfMsgHtml( 'filehist-current' );
 658                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 659                         if( $file->isDeleted(File::DELETED_FILE) ) {
 660                                 $row .= wfMsgHtml('filehist-revert');
 661                         } else {
 662                                 $q = array();
 663                                 $q[] = 'action=revert';
 664                                 $q[] = 'oldimage=' . urlencode( $img );
 665                                 $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 666                                 $row .= $this->skin->makeKnownLinkObj( $this->title,
 667                                         wfMsgHtml( 'filehist-revert' ),
 668                                         implode( '&', $q ) );
 669                         }
 670                 }
 671                 $row .= '</td>';
 672
 673                 // Date/time and image link
 674                 $row .= '<td>';
 675                 if( !$file->userCan(File::DELETED_FILE) ) {
 676                         # Don't link to unviewable files
 677                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 678                 } else if( $file->isDeleted(File::DELETED_FILE) ) {
 679                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 680                         # Make a link to review the image
 681                         $url = $this->skin->makeKnownLinkObj( $revdel, $wgLang->timeAndDate( $timestamp, true ),
 682                                 "target=".$wgTitle->getPrefixedText()."&file=$sha1.".$this->img->getExtension() );
 683                         $row .= '<span class="history-deleted">'.$url.'</span>';
 684                 } else {
 685                         $url = $iscur ? $this->img->getUrl() : $this->img->getArchiveUrl( $img );
 686                         $row .= Xml::element( 'a',
 687                                 array( 'href' => $url ),
 688                                 $wgLang->timeAndDate( $timestamp, true ) );
 689                 }
 690
 691                 $row .= '</td>';
 692
 693                 // Uploading user
 694                 $row .= '<td>';
 695                 if( $local ) {
 696                         // Hide deleted usernames
 697                         if( $file->isDeleted(File::DELETED_USER) )
 698                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 699                         else
 700                                 $row .= $this->skin->userLink( $user, $usertext ) .
 701                                         $this->skin->userToolLinks( $user, $usertext );
 702                 } else {
 703                         $row .= htmlspecialchars( $usertext );
 704                 }
 705                 $row .= '</td>';
 706
 707                 // Image dimensions
 708                 $row .= '<td>' . htmlspecialchars( $dims ) . '</td>';
 709
 710                 // File size
 711                 $row .= '<td class="mw-imagepage-filesize">' . $this->skin->formatSize( $size ) . '</td>';
 712
 713                 // Don't show deleted descriptions
 714                 if ( $file->isDeleted(File::DELETED_COMMENT) )
 715                         $row .= '<td><span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span></td>';
 716                 else
 717                         $row .= '<td>' . $this->skin->commentBlock( $description, $this->title ) . '</td>';
 718
 719                 return "<tr>{$row}</tr>\n";
 720         }
 721 }