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 ) {
  23                 parent::__construct( $title );
  24                 $this->img = wfFindFile( $this->mTitle );
  25                 if ( !$this->img ) {
  26                         $this->img = wfLocalFile( $this->mTitle );
  27                 }
  28                 $this->repo = $this->img->repo;
  29         }
  30
  31         /**
  32          * Handler for action=render
  33          * Include body text only; none of the image extras
  34          */
  35         function render() {
  36                 global $wgOut;
  37                 $wgOut->setArticleBodyOnly( true );
  38                 $wgOut->addSecondaryWikitext( $this->getContent() );
  39         }
  40
  41         function view() {
  42                 global $wgOut, $wgShowEXIF, $wgRequest, $wgUser;
  43
  44                 $diff = $wgRequest->getVal( 'diff' );
  45                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  46
  47                 if ( $this->mTitle->getNamespace() != NS_IMAGE || ( isset( $diff ) && $diffOnly ) )
  48                         return Article::view();
  49
  50                 if ($wgShowEXIF && $this->img->exists()) {
  51                         // FIXME: bad interface, see note on MediaHandler::formatMetadata().
  52                         $formattedMetadata = $this->img->formatMetadata();
  53                         $showmeta = $formattedMetadata !== false;
  54                 } else {
  55                         $showmeta = false;
  56                 }
  57
  58                 if ($this->img->exists())
  59                         $wgOut->addHTML($this->showTOC($showmeta));
  60
  61                 $this->openShowImage();
  62
  63                 # No need to display noarticletext, we use our own message, output in openShowImage()
  64                 if ( $this->getID() ) {
  65                         Article::view();
  66                 } else {
  67                         # Just need to set the right headers
  68                         $wgOut->setArticleFlag( true );
  69                         $wgOut->setRobotpolicy( 'index,follow' );
  70                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  71                         $this->viewUpdates();
  72                 }
  73
  74                 # Show shared description, if needed
  75                 if ( $this->mExtraDescription ) {
  76                         $fol = wfMsg( 'shareddescriptionfollows' );
  77                         if( $fol != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $fol ) ) {
  78                                 $wgOut->addWikiText( $fol );
  79                         }
  80                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  81                 }
  82
  83                 $this->closeShowImage();
  84                 $this->imageHistory();
  85                 $this->imageLinks();
  86
  87                 if ( $showmeta ) {
  88                         global $wgStylePath, $wgStyleVersion;
  89                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  90                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  91                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
  92                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
  93                         $wgOut->addHTML(
  94                                 "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js?$wgStyleVersion\"></script>\n" .
  95                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
  96                 }
  97         }
  98
  99         /**
 100          * Create the TOC
 101          *
 102          * @access private
 103          *
 104          * @param bool $metadata Whether or not to show the metadata link
 105          * @return string
 106          */
 107         function showTOC( $metadata ) {
 108                 global $wgLang;
 109                 $r = '<ul id="filetoc">
 110                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 111                         <li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>
 112                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 113                         ($metadata ? ' <li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 114                 </ul>';
 115                 return $r;
 116         }
 117
 118         /**
 119          * Make a table with metadata to be shown in the output page.
 120          *
 121          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 122          *
 123          * @access private
 124          *
 125          * @param array $exif The array containing the EXIF data
 126          * @return string
 127          */
 128         function makeMetadataTable( $metadata ) {
 129                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 130                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 131                 foreach ( $metadata as $type => $stuff ) {
 132                         foreach ( $stuff as $v ) {
 133                                 $class = Sanitizer::escapeId( $v['id'] );
 134                                 if( $type == 'collapsed' ) {
 135                                         $class .= ' collapsable';
 136                                 }
 137                                 $r .= "|- class=\"$class\"\n";
 138                                 $r .= "!| {$v['name']}\n";
 139                                 $r .= "|| {$v['value']}\n";
 140                         }
 141                 }
 142                 $r .= '|}';
 143                 return $r;
 144         }
 145
 146         /**
 147          * Overloading Article's getContent method.
 148          *
 149          * Omit noarticletext if sharedupload; text will be fetched from the
 150          * shared upload server if possible.
 151          */
 152         function getContent() {
 153                 if( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 154                         return '';
 155                 }
 156                 return Article::getContent();
 157         }
 158
 159         function openShowImage() {
 160                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang;
 161
 162                 $full_url  = $this->img->getURL();
 163                 $linkAttribs = false;
 164                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 165                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 166                         $sizeSel = User::getDefaultOption( 'imagesize' );
 167
 168                         // The user offset might still be incorrect, specially if
 169                         // $wgImageLimits got changed (see bug #8858).
 170                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 171                                 // Default to the first offset in $wgImageLimits
 172                                 $sizeSel = 0;
 173                         }
 174                 }
 175                 $max = $wgImageLimits[$sizeSel];
 176                 $maxWidth = $max[0];
 177                 $maxHeight = $max[1];
 178                 $sk = $wgUser->getSkin();
 179
 180                 if ( $this->img->exists() ) {
 181                         # image
 182                         $page = $wgRequest->getIntOrNull( 'page' );
 183                         if ( is_null( $page ) ) {
 184                                 $params = array();
 185                                 $page = 1;
 186                         } else {
 187                                 $params = array( 'page' => $page );
 188                         }
 189                         $width_orig = $this->img->getWidth();
 190                         $width = $width_orig;
 191                         $height_orig = $this->img->getHeight();
 192                         $height = $height_orig;
 193                         $mime = $this->img->getMimeType();
 194                         $showLink = false;
 195                         $linkAttribs = array( 'href' => $full_url );
 196                         $longDesc = $this->img->getLongDesc();
 197
 198                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this , &$wgOut ) )       ;
 199
 200                         if ( $this->img->allowInlineDisplay() ) {
 201                                 # image
 202
 203                                 # "Download high res version" link below the image
 204                                 #$msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->img->getSize() ), $mime );
 205                                 # We'll show a thumbnail of this image
 206                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 207                                         # Calculate the thumbnail size.
 208                                         # First case, the limiting factor is the width, not the height.
 209                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 210                                                 $height = round( $height * $maxWidth / $width);
 211                                                 $width = $maxWidth;
 212                                                 # Note that $height <= $maxHeight now.
 213                                         } else {
 214                                                 $newwidth = floor( $width * $maxHeight / $height);
 215                                                 $height = round( $height * $newwidth / $width );
 216                                                 $width = $newwidth;
 217                                                 # Note that $height <= $maxHeight now, but might not be identical
 218                                                 # because of rounding.
 219                                         }
 220                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 221                                         $msgsmall = wfMsgExt( 'show-big-image-thumb',
 222                                                 array( 'parseinline' ), $width, $height );
 223                                 } else {
 224                                         # Image is small enough to show full size on image page
 225                                         $msgbig = htmlspecialchars( $this->img->getName() );
 226                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 227                                 }
 228
 229                                 $params['width'] = $width;
 230                                 $thumbnail = $this->img->transform( $params );
 231
 232                                 $anchorclose = "<br />";
 233                                 if( $this->img->mustRender() ) {
 234                                         $showLink = true;
 235                                 } else {
 236                                         $anchorclose .=
 237                                                 $msgsmall .
 238                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . ' ' . $longDesc;
 239                                 }
 240
 241                                 if ( $this->img->isMultipage() ) {
 242                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 243                                 }
 244
 245                                 if ( $thumbnail ) {
 246                                         $options = array(
 247                                                 'alt' => $this->img->getTitle()->getPrefixedText(),
 248                                                 'file-link' => true,
 249                                         );
 250                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 251                                                 $thumbnail->toHtml( $options ) .
 252                                                 $anchorclose . '</div>' );
 253                                 }
 254
 255                                 if ( $this->img->isMultipage() ) {
 256                                         $count = $this->img->pageCount();
 257
 258                                         if ( $page > 1 ) {
 259                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 260                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 261                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 262                                                         array( 'page' => $page - 1 ) );
 263                                         } else {
 264                                                 $thumb1 = '';
 265                                         }
 266
 267                                         if ( $page < $count ) {
 268                                                 $label = wfMsg( 'imgmultipagenext' );
 269                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 270                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 271                                                         array( 'page' => $page + 1 ) );
 272                                         } else {
 273                                                 $thumb2 = '';
 274                                         }
 275
 276                                         global $wgScript;
 277                                         $select = '<form name="pageselector" action="' .
 278                                                 htmlspecialchars( $wgScript ) .
 279                                                 '" method="get" onchange="document.pageselector.submit();">' .
 280                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 281                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 282                                                 ' <select id="pageselector" name="page">';
 283                                         for ( $i=1; $i <= $count; $i++ ) {
 284                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 285                                                         $i == $page );
 286                                         }
 287                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 288                                                 '<input type="submit" value="' .
 289                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 290
 291                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 292                                                 "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 293                                 }
 294                         } else {
 295                                 #if direct link is allowed but it's not a renderable image, show an icon.
 296                                 if ($this->img->isSafeFile()) {
 297                                         $icon= $this->img->iconThumb();
 298
 299                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 300                                         $icon->toHtml( array( 'desc-link' => true ) ) .
 301                                         '</div>' );
 302                                 }
 303
 304                                 $showLink = true;
 305                         }
 306
 307
 308                         if ($showLink) {
 309                                 $filename = wfEscapeWikiText( $this->img->getName() );
 310
 311                                 global $wgContLang;
 312                                 $dirmark = $wgContLang->getDirMark();
 313                                 if (!$this->img->isSafeFile()) {
 314                                         $warning = wfMsg( 'mediawarning' );
 315                                         $wgOut->addWikiText( <<<EOT
 316 <div class="fullMedia">
 317 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 318 <span class="fileInfo"> $longDesc</span>
 319 </div>
 320
 321 <div class="mediaWarning">$warning</div>
 322 EOT
 323                                                 );
 324                                 } else {
 325                                         $wgOut->addWikiText( <<<EOT
 326 <div class="fullMedia">
 327 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 328 </div>
 329 EOT
 330                                                 );
 331                                 }
 332                         }
 333
 334                         if(!$this->img->isLocal()) {
 335                                 $this->printSharedImageText();
 336                         }
 337                 } else {
 338                         # Image does not exist
 339
 340                         $title = SpecialPage::getTitleFor( 'Upload' );
 341                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 342                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 343                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 344                 }
 345         }
 346
 347         function printSharedImageText() {
 348                 global $wgOut, $wgUser;
 349
 350                 $descUrl = $this->img->getDescriptionUrl();
 351                 $descText = $this->img->getDescriptionText();
 352                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 353                 if ( $descUrl && !$descText) {
 354                         $sk = $wgUser->getSkin();
 355                         $link = $sk->makeExternalLink( $descUrl, wfMsg('shareduploadwiki-linktext') );
 356                         $s .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 357                 }
 358                 $s .= "</div>";
 359                 $wgOut->addHTML($s);
 360
 361                 if ( $descText ) {
 362                         $this->mExtraDescription = $descText;
 363                 }
 364         }
 365
 366         function getUploadUrl() {
 367                 global $wgServer;
 368                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 369                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 370         }
 371
 372         /**
 373          * Print out the various links at the bottom of the image page, e.g. reupload,
 374          * external editing (and instructions link) etc.
 375          */
 376         function uploadLinksBox() {
 377                 global $wgUser, $wgOut;
 378
 379                 if( !$this->img->isLocal() )
 380                         return;
 381
 382                 $sk = $wgUser->getSkin();
 383
 384                 $wgOut->addHtml( '<br /><ul>' );
 385
 386                 # "Upload a new version of this file" link
 387                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 388                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 389                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 390                 }
 391
 392                 # External editing link
 393                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 394                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 395
 396                 $wgOut->addHtml( '</ul>' );
 397         }
 398
 399         function closeShowImage()
 400         {
 401                 # For overloading
 402
 403         }
 404
 405         /**
 406          * If the page we've just displayed is in the "Image" namespace,
 407          * we follow it with an upload history of the image and its usage.
 408          */
 409         function imageHistory()
 410         {
 411                 global $wgUser, $wgOut, $wgUseExternalEditor;
 412
 413                 $sk = $wgUser->getSkin();
 414
 415                 $line = $this->img->nextHistoryLine();
 416
 417                 if ( $line ) {
 418                         $list = new ImageHistoryList( $sk, $this->img );
 419                         // Our top image
 420                         $file = $this->repo->newFileFromRow( $line );
 421                         $dims = $file->getDimensionsString();
 422                         $s = $list->beginImageHistoryList() .
 423                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 424                                         $this->mTitle->getDBkey(), $line->img_user,
 425                                         $line->img_user_text, $line->img_size, $line->img_description, $dims,
 426                                         $line->oi_deleted, $line->img_sha1
 427                                 );
 428                         // old image versions
 429                         while ( $line = $this->img->nextHistoryLine() ) {
 430                                 $file = $this->repo->newFileFromRow( $line );
 431                                 $dims = $file->getDimensionsString();
 432                                 $s .= $list->imageHistoryLine( false, $line->oi_timestamp,
 433                                         $line->oi_archive_name, $line->oi_user,
 434                                         $line->oi_user_text, $line->oi_size, $line->oi_description,
 435                                         $dims, $line->oi_deleted, $line->oi_sha1
 436                                 );
 437                         }
 438                         $s .= $list->endImageHistoryList();
 439                 } else { $s=''; }
 440                 $wgOut->addHTML( $s );
 441
 442                 $this->img->resetHistory();     // free db resources
 443
 444                 # Exist check because we don't want to show this on pages where an image
 445                 # doesn't exist along with the noimage message, that would suck. -ævar
 446                 if( $wgUseExternalEditor && $this->img->exists() ) {
 447                         $this->uploadLinksBox();
 448                 }
 449
 450         }
 451
 452         function imageLinks()
 453         {
 454                 global $wgUser, $wgOut;
 455
 456                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 457
 458                 $dbr = wfGetDB( DB_SLAVE );
 459                 $page = $dbr->tableName( 'page' );
 460                 $imagelinks = $dbr->tableName( 'imagelinks' );
 461
 462                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 463                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 464                 $sql = $dbr->limitResult($sql, 500, 0);
 465                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 466
 467                 if ( 0 == $dbr->numRows( $res ) ) {
 468                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 469                         return;
 470                 }
 471                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 472
 473                 $sk = $wgUser->getSkin();
 474                 while ( $s = $dbr->fetchObject( $res ) ) {
 475                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 476                         $link = $sk->makeKnownLinkObj( $name, "" );
 477                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 478                 }
 479                 $wgOut->addHTML( "</ul>\n" );
 480         }
 481
 482         /**
 483          * Delete the file, or an earlier version of it
 484          */
 485         public function delete() {
 486                 if( !$this->img->exists() || !$this->img->isLocal() ) {
 487                         // Standard article deletion
 488                         Article::delete();
 489                         return;
 490                 }
 491                 $deleter = new FileDeleteForm( $this->img );
 492                 $deleter->execute();
 493         }
 494
 495         /**
 496          * Revert the file to an earlier version
 497          */
 498         public function revert() {
 499                 $reverter = new FileRevertForm( $this->img );
 500                 $reverter->execute();
 501         }
 502
 503         /**
 504          * Override handling of action=purge
 505          */
 506         function doPurge() {
 507                 if( $this->img->exists() ) {
 508                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 509                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 510                         $update->doUpdate();
 511                         $this->img->upgradeRow();
 512                         $this->img->purgeCache();
 513                 } else {
 514                         wfDebug( "ImagePage::doPurge no image\n" );
 515                 }
 516                 parent::doPurge();
 517         }
 518
 519         /**
 520          * Display an error with a wikitext description
 521          */
 522         function showError( $description ) {
 523                 global $wgOut;
 524                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 525                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 526                 $wgOut->setArticleRelated( false );
 527                 $wgOut->enableClientCache( false );
 528                 $wgOut->addWikiText( $description );
 529         }
 530
 531 }
 532
 533 /**
 534  * Builds the image revision log shown on image pages
 535  *
 536  * @addtogroup Media
 537  */
 538 class ImageHistoryList {
 539
 540         protected $img, $skin, $title, $repo;
 541
 542         public function __construct( $skin, $img ) {
 543                 $this->skin = $skin;
 544                 $this->img = $img;
 545                 $this->title = $img->getTitle();
 546         }
 547
 548         public function beginImageHistoryList() {
 549                 global $wgOut, $wgUser;
 550                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 551                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 552                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 553                         . '<tr><td></td>'
 554                         . ( $this->img->isLocal() && $wgUser->isAllowed( 'deleterevision' ) ? '<td></td>' : '' )
 555                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 556                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 557                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 558                         . '<th class="mw-imagepage-filesize">' . wfMsgHtml( 'filehist-filesize' ) . '</th>'
 559                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 560                         . "</tr>\n";
 561         }
 562
 563         public function endImageHistoryList() {
 564                 return "</table>\n";
 565         }
 566
 567         public function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $dims,
 568                 $deleted, $sha1 ) {
 569                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 570                 $local = $this->img->isLocal();
 571                 $row = '<td>';
 572
 573                 // Deletion link
 574                 if( $iscur && $local && $wgUser->isAllowed( 'delete' ) ) {
 575                         $q = array();
 576                         $q[] = 'action=delete';
 577                         $q[] = 'image=' . $this->title->getPartialUrl();
 578                         $row .= '(' . $this->skin->makeKnownLinkObj(
 579                                 $this->title,
 580                                 wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 581                                 implode( '&', $q )
 582                         ) . ')';
 583                         $row .= '</td><td>';
 584                 }
 585
 586                 if( !$iscur && $local && $wgUser->isAllowed( 'deleterevision' ) ) {
 587                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 588                         if( !$this->userCan($deleted,Image::DELETED_RESTRICTED) ) {
 589                                 // If file was hidden from sysops
 590                                 $del = wfMsgHtml( 'rev-delundel' );
 591                         } else {
 592                                 // If the file was hidden, link to sha-1
 593                                 list($ts,$name) = explode('!',$img,2);
 594                                 $del = $this->skin->makeKnownLinkObj( $revdel,  wfMsg( 'rev-delundel' ),
 595                                         'target=' . urlencode( $wgTitle->getPrefixedText() ) .
 596                                         '&oldimage=' . urlencode( $ts ) );
 597                                 // Bolden oversighted content
 598                                 if( $this->isDeleted($deleted,Image::DELETED_RESTRICTED) )
 599                                         $del = "<strong>$del</strong>";
 600                         }
 601                         $row .= "<tt>(<small>$del</small>)</tt></td><td> ";
 602                 }
 603
 604                 // Reversion link/current indicator
 605                 if( $iscur ) {
 606                         $row .= ' (' . wfMsgHtml( 'filehist-current' ) . ')';
 607                 } elseif( $this->isDeleted($deleted,Image::DELETED_FILE) ) {
 608                         $row .= '(' . wfMsgHtml('filehist-revert') . ')';
 609                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 610                         $q = array();
 611                         $q[] = 'action=revert';
 612                         $q[] = 'oldimage=' . urlencode( $img );
 613                         $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 614                         $row .= '(' . $this->skin->makeKnownLinkObj(
 615                                 $this->title,
 616                                 wfMsgHtml( 'filehist-revert' ),
 617                                 implode( '&', $q )
 618                         ) . ')';
 619                 }
 620                 $row .= '</td>';
 621
 622                 // Date/time and image link
 623                 $row .= '<td>';
 624                 if( !$this->userCan($deleted,Image::DELETED_FILE) ) {
 625                         # Don't link to unviewable files
 626                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 627                 } else if( $this->isDeleted($deleted,Image::DELETED_FILE) ) {
 628                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 629                         # Make a link to review the image
 630                         $url = $this->skin->makeKnownLinkObj( $revdel, $wgLang->timeAndDate( $timestamp, true ),
 631                                 "target=".$wgTitle->getPrefixedText()."&file=$sha1.".$this->img->getExtension() );
 632                         $row .= '<span class="history-deleted">'.$url.'</span>';
 633                 } else {
 634                         $url = $iscur ? $this->img->getUrl() : $this->img->getArchiveUrl( $img );
 635                         $row .= Xml::element( 'a',
 636                                 array( 'href' => $url ),
 637                                 $wgLang->timeAndDate( $timestamp, true ) );
 638                 }
 639
 640                 $row .= '</td>';
 641
 642                 // Uploading user
 643                 $row .= '<td>';
 644                 if( $local ) {
 645                         // Hide deleted usernames
 646                         if( $this->isDeleted($deleted,Image::DELETED_USER) )
 647                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 648                         else
 649                                 $row .= $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 650                 } else {
 651                         $row .= htmlspecialchars( $usertext );
 652                 }
 653                 $row .= '</td>';
 654
 655                 // Image dimensions
 656                 $row .= '<td>' . htmlspecialchars( $dims ) . '</td>';
 657
 658                 // File size
 659                 $row .= '<td class="mw-imagepage-filesize">' . $this->skin->formatSize( $size ) . '</td>';
 660
 661                 // Don't show deleted descriptions
 662                 if ( $this->isDeleted($deleted,Image::DELETED_COMMENT) )
 663                         $row .= '<td><span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span></td>';
 664                 else
 665                         $row .= '<td>' . $this->skin->commentBlock( $description, $this->title ) . '</td>';
 666
 667                 return "<tr>{$row}</tr>\n";
 668         }
 669
 670         /**
 671          * int $field one of DELETED_* bitfield constants
 672          * for file or revision rows
 673          * @param int $bitfield
 674          * @param int $field
 675          * @return bool
 676          */
 677         function isDeleted( $bitfield, $field ) {
 678                 return ($bitfield & $field) == $field;
 679         }
 680
 681         /**
 682          * Determine if the current user is allowed to view a particular
 683          * field of this FileStore image file, if it's marked as deleted.
 684          * @param int $bitfield
 685          * @param int $field
 686          * @return bool
 687          */
 688         function userCan( $bitfield, $field ) {
 689                 if( ($bitfield & $field) == $field ) {
 690                 // images
 691                         global $wgUser;
 692                         $permission = ( $bitfield & File::DELETED_RESTRICTED ) == File::DELETED_RESTRICTED
 693                                 ? 'hiderevision'
 694                                 : 'deleterevision';
 695                         wfDebug( "Checking for $permission due to $field match on $bitfield\n" );
 696                         return $wgUser->isAllowed( $permission );
 697                 } else {
 698                         return true;
 699                 }
 700         }
 701
 702 }