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                 if ( $this->img->getRedirected() )
  48                         return Article::view();
  49
  50                 $diff = $wgRequest->getVal( 'diff' );
  51                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  52
  53                 if ( $this->mTitle->getNamespace() != NS_IMAGE || ( isset( $diff ) && $diffOnly ) )
  54                         return Article::view();
  55
  56                 if ($wgShowEXIF && $this->img->exists()) {
  57                         // FIXME: bad interface, see note on MediaHandler::formatMetadata().
  58                         $formattedMetadata = $this->img->formatMetadata();
  59                         $showmeta = $formattedMetadata !== false;
  60                 } else {
  61                         $showmeta = false;
  62                 }
  63
  64                 if ($this->img->exists())
  65                         $wgOut->addHTML($this->showTOC($showmeta));
  66
  67                 $this->openShowImage();
  68
  69                 # No need to display noarticletext, we use our own message, output in openShowImage()
  70                 if ( $this->getID() ) {
  71                         Article::view();
  72                 } else {
  73                         # Just need to set the right headers
  74                         $wgOut->setArticleFlag( true );
  75                         $wgOut->setRobotpolicy( 'noindex,nofollow' );
  76                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  77                         $this->viewUpdates();
  78                 }
  79
  80                 # Show shared description, if needed
  81                 if ( $this->mExtraDescription ) {
  82                         $fol = wfMsgNoTrans( 'shareddescriptionfollows' );
  83                         if( $fol != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $fol ) ) {
  84                                 $wgOut->addWikiText( $fol );
  85                         }
  86                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
  87                 } else {
  88                         $this->checkSharedConflict();
  89                 }
  90
  91                 $this->closeShowImage();
  92                 $this->imageHistory();
  93                 $this->imageLinks();
  94
  95                 if ( $showmeta ) {
  96                         global $wgStylePath, $wgStyleVersion;
  97                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  98                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
  99                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
 100                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 101                         $wgOut->addHTML(
 102                                 "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js?$wgStyleVersion\"></script>\n" .
 103                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
 104                 }
 105         }
 106
 107         public function getRedirectTarget() {
 108                 if ( $this->img->isLocal() )
 109                         return parent::getRedirectTarget();
 110
 111                 // Foreign image page
 112                 $from = $this->img->getRedirected();
 113                 return $this->mRedirectTarget = Title::makeTitle( NS_IMAGE, $from );
 114         }
 115
 116         /**
 117          * Create the TOC
 118          *
 119          * @access private
 120          *
 121          * @param bool $metadata Whether or not to show the metadata link
 122          * @return string
 123          */
 124         function showTOC( $metadata ) {
 125                 global $wgLang;
 126                 $r = '<ul id="filetoc">
 127                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 128                         <li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>
 129                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 130                         ($metadata ? ' <li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 131                 </ul>';
 132                 return $r;
 133         }
 134
 135         /**
 136          * Make a table with metadata to be shown in the output page.
 137          *
 138          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 139          *
 140          * @access private
 141          *
 142          * @param array $exif The array containing the EXIF data
 143          * @return string
 144          */
 145         function makeMetadataTable( $metadata ) {
 146                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 147                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 148                 foreach ( $metadata as $type => $stuff ) {
 149                         foreach ( $stuff as $v ) {
 150                                 $class = Sanitizer::escapeId( $v['id'] );
 151                                 if( $type == 'collapsed' ) {
 152                                         $class .= ' collapsable';
 153                                 }
 154                                 $r .= "|- class=\"$class\"\n";
 155                                 $r .= "!| {$v['name']}\n";
 156                                 $r .= "|| {$v['value']}\n";
 157                         }
 158                 }
 159                 $r .= '|}';
 160                 return $r;
 161         }
 162
 163         /**
 164          * Overloading Article's getContent method.
 165          *
 166          * Omit noarticletext if sharedupload; text will be fetched from the
 167          * shared upload server if possible.
 168          */
 169         function getContent() {
 170                 if( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 171                         return '';
 172                 }
 173                 return Article::getContent();
 174         }
 175
 176         function openShowImage() {
 177                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang, $wgContLang;
 178
 179                 $full_url  = $this->img->getURL();
 180                 $linkAttribs = false;
 181                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 182                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 183                         $sizeSel = User::getDefaultOption( 'imagesize' );
 184
 185                         // The user offset might still be incorrect, specially if
 186                         // $wgImageLimits got changed (see bug #8858).
 187                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 188                                 // Default to the first offset in $wgImageLimits
 189                                 $sizeSel = 0;
 190                         }
 191                 }
 192                 $max = $wgImageLimits[$sizeSel];
 193                 $maxWidth = $max[0];
 194                 $maxHeight = $max[1];
 195                 $sk = $wgUser->getSkin();
 196                 $dirmark = $wgContLang->getDirMark();
 197
 198                 if ( $this->img->exists() ) {
 199                         # image
 200                         $page = $wgRequest->getIntOrNull( 'page' );
 201                         if ( is_null( $page ) ) {
 202                                 $params = array();
 203                                 $page = 1;
 204                         } else {
 205                                 $params = array( 'page' => $page );
 206                         }
 207                         $width_orig = $this->img->getWidth();
 208                         $width = $width_orig;
 209                         $height_orig = $this->img->getHeight();
 210                         $height = $height_orig;
 211                         $mime = $this->img->getMimeType();
 212                         $showLink = false;
 213                         $linkAttribs = array( 'href' => $full_url );
 214                         $longDesc = $this->img->getLongDesc();
 215
 216                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this , &$wgOut ) )       ;
 217
 218                         if ( $this->img->allowInlineDisplay() ) {
 219                                 # image
 220
 221                                 # "Download high res version" link below the image
 222                                 #$msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->img->getSize() ), $mime );
 223                                 # We'll show a thumbnail of this image
 224                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 225                                         # Calculate the thumbnail size.
 226                                         # First case, the limiting factor is the width, not the height.
 227                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 228                                                 $height = round( $height * $maxWidth / $width);
 229                                                 $width = $maxWidth;
 230                                                 # Note that $height <= $maxHeight now.
 231                                         } else {
 232                                                 $newwidth = floor( $width * $maxHeight / $height);
 233                                                 $height = round( $height * $newwidth / $width );
 234                                                 $width = $newwidth;
 235                                                 # Note that $height <= $maxHeight now, but might not be identical
 236                                                 # because of rounding.
 237                                         }
 238                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 239                                         $msgsmall = wfMsgExt( 'show-big-image-thumb',
 240                                                 array( 'parseinline' ), $wgLang->formatNum( $width ), $wgLang->formatNum( $height ) );
 241                                 } else {
 242                                         # Image is small enough to show full size on image page
 243                                         $msgbig = htmlspecialchars( $this->img->getName() );
 244                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 245                                 }
 246
 247                                 $params['width'] = $width;
 248                                 $thumbnail = $this->img->transform( $params );
 249
 250                                 $anchorclose = "<br />";
 251                                 if( $this->img->mustRender() ) {
 252                                         $showLink = true;
 253                                 } else {
 254                                         $anchorclose .=
 255                                                 $msgsmall .
 256                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 257                                 }
 258
 259                                 if ( $this->img->isMultipage() ) {
 260                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 261                                 }
 262
 263                                 if ( $thumbnail ) {
 264                                         $options = array(
 265                                                 'alt' => $this->img->getTitle()->getPrefixedText(),
 266                                                 'file-link' => true,
 267                                         );
 268                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 269                                                 $thumbnail->toHtml( $options ) .
 270                                                 $anchorclose . '</div>' );
 271                                 }
 272
 273                                 if ( $this->img->isMultipage() ) {
 274                                         $count = $this->img->pageCount();
 275
 276                                         if ( $page > 1 ) {
 277                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 278                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 279                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 280                                                         array( 'page' => $page - 1 ) );
 281                                         } else {
 282                                                 $thumb1 = '';
 283                                         }
 284
 285                                         if ( $page < $count ) {
 286                                                 $label = wfMsg( 'imgmultipagenext' );
 287                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 288                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 289                                                         array( 'page' => $page + 1 ) );
 290                                         } else {
 291                                                 $thumb2 = '';
 292                                         }
 293
 294                                         global $wgScript;
 295                                         $select = '<form name="pageselector" action="' .
 296                                                 htmlspecialchars( $wgScript ) .
 297                                                 '" method="get" onchange="document.pageselector.submit();">' .
 298                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 299                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 300                                                 ' <select id="pageselector" name="page">';
 301                                         for ( $i=1; $i <= $count; $i++ ) {
 302                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 303                                                         $i == $page );
 304                                         }
 305                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 306                                                 '<input type="submit" value="' .
 307                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 308
 309                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 310                                                 "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 311                                 }
 312                         } else {
 313                                 #if direct link is allowed but it's not a renderable image, show an icon.
 314                                 if ($this->img->isSafeFile()) {
 315                                         $icon= $this->img->iconThumb();
 316
 317                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 318                                         $icon->toHtml( array( 'desc-link' => true ) ) .
 319                                         '</div>' );
 320                                 }
 321
 322                                 $showLink = true;
 323                         }
 324
 325
 326                         if ($showLink) {
 327                                 $filename = wfEscapeWikiText( $this->img->getName() );
 328
 329                                 if (!$this->img->isSafeFile()) {
 330                                         $warning = wfMsgNoTrans( 'mediawarning' );
 331                                         $wgOut->addWikiText( <<<EOT
 332 <div class="fullMedia">
 333 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 334 <span class="fileInfo"> $longDesc</span>
 335 </div>
 336
 337 <div class="mediaWarning">$warning</div>
 338 EOT
 339                                                 );
 340                                 } else {
 341                                         $wgOut->addWikiText( <<<EOT
 342 <div class="fullMedia">
 343 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 344 </div>
 345 EOT
 346                                                 );
 347                                 }
 348                         }
 349
 350                         if(!$this->img->isLocal()) {
 351                                 $this->printSharedImageText();
 352                         }
 353                 } else {
 354                         # Image does not exist
 355
 356                         $title = SpecialPage::getTitleFor( 'Upload' );
 357                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 358                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 359                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 360                 }
 361         }
 362
 363         /**
 364          * Show a notice that the file is from a shared repository
 365          */
 366         function printSharedImageText() {
 367                 global $wgOut, $wgUser;
 368
 369                 $descUrl = $this->img->getDescriptionUrl();
 370                 $descText = $this->img->getDescriptionText();
 371                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml( 'sharedupload' );
 372                 if ( $descUrl ) {
 373                         $sk = $wgUser->getSkin();
 374                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadwiki-linktext' ) );
 375                         $msg = ( $descText ) ? 'shareduploadwiki-desc' : 'shareduploadwiki';
 376                         $msg = wfMsgExt( $msg, array( 'parseinline', 'replaceafter' ), $link );
 377                         if ( $msg != '-' ) {
 378                                 # Show message only if not voided by local sysops
 379                                 $s .= $msg;
 380                         }
 381                 }
 382                 $s .= "</div>";
 383                 $wgOut->addHTML( $s );
 384
 385                 if ( $descText ) {
 386                         $this->mExtraDescription = $descText;
 387                 }
 388         }
 389
 390         function checkSharedConflict() {
 391                 global $wgOut, $wgUser;
 392                 $repoGroup = RepoGroup::singleton();
 393                 if( !$repoGroup->hasForeignRepos() ) {
 394                         return;
 395                 }
 396                 if( !$this->img->isLocal() ) {
 397                         return;
 398                 }
 399
 400                 $this->dupFile = null;
 401                 $repoGroup->forEachForeignRepo( array( $this, 'checkSharedConflictCallback' ) );
 402
 403                 if( !$this->dupFile )
 404                         return;
 405                 $dupfile = $this->dupFile;
 406                 $same = (
 407                         ($this->img->getSha1() == $dupfile->getSha1()) &&
 408                         ($this->img->getSize() == $dupfile->getSize())
 409                 );
 410
 411                 $sk = $wgUser->getSkin();
 412                 $descUrl = $dupfile->getDescriptionUrl();
 413                 if( $same ) {
 414                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadduplicate-linktext' ) );
 415                         $wgOut->addHTML( '<div id="shared-image-dup">' . wfMsgWikiHtml( 'shareduploadduplicate', $link ) . '</div>' );
 416                 } else {
 417                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadconflict-linktext' ) );
 418                         $wgOut->addHTML( '<div id="shared-image-conflict">' . wfMsgWikiHtml( 'shareduploadconflict', $link ) . '</div>' );
 419                 }
 420         }
 421
 422         function checkSharedConflictCallback( $repo ) {
 423                 $dupfile = $repo->newFile( $this->img->getTitle() );
 424                 if( $dupfile->exists() )
 425                         $this->dupFile = $dupfile;
 426                 return $dupfile->exists();
 427         }
 428
 429         function getUploadUrl() {
 430                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 431                 return $uploadTitle->getFullUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 432         }
 433
 434         /**
 435          * Print out the various links at the bottom of the image page, e.g. reupload,
 436          * external editing (and instructions link) etc.
 437          */
 438         function uploadLinksBox() {
 439                 global $wgUser, $wgOut;
 440
 441                 if( !$this->img->isLocal() )
 442                         return;
 443
 444                 $sk = $wgUser->getSkin();
 445
 446                 $wgOut->addHtml( '<br /><ul>' );
 447
 448                 # "Upload a new version of this file" link
 449                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 450                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 451                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 452                 }
 453
 454                 # Link to Special:FileDuplicateSearch
 455                 $dupeLink = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'FileDuplicateSearch', $this->mTitle->getDBkey() ), wfMsgHtml( 'imagepage-searchdupe' ) );
 456                 $wgOut->addHtml( "<li>{$dupeLink}</li>" );
 457
 458                 # External editing link
 459                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 460                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 461
 462                 $wgOut->addHtml( '</ul>' );
 463         }
 464
 465         function closeShowImage()
 466         {
 467                 # For overloading
 468
 469         }
 470
 471         /**
 472          * If the page we've just displayed is in the "Image" namespace,
 473          * we follow it with an upload history of the image and its usage.
 474          */
 475         function imageHistory()
 476         {
 477                 global $wgUser, $wgOut, $wgUseExternalEditor;
 478
 479                 $sk = $wgUser->getSkin();
 480
 481                 if ( $this->img->exists() ) {
 482                         $list = new ImageHistoryList( $sk, $this->current );
 483                         $file = $this->current;
 484                         $dims = $file->getDimensionsString();
 485                         $s = $list->beginImageHistoryList() .
 486                                 $list->imageHistoryLine( true, $file );
 487                         // old image versions
 488                         $hist = $this->img->getHistory();
 489                         foreach( $hist as $file ) {
 490                                 $dims = $file->getDimensionsString();
 491                                 $s .= $list->imageHistoryLine( false, $file );
 492                         }
 493                         $s .= $list->endImageHistoryList();
 494                 } else { $s=''; }
 495                 $wgOut->addHTML( $s );
 496
 497                 $this->img->resetHistory();     // free db resources
 498
 499                 # Exist check because we don't want to show this on pages where an image
 500                 # doesn't exist along with the noimage message, that would suck. -ævar
 501                 if( $wgUseExternalEditor && $this->img->exists() ) {
 502                         $this->uploadLinksBox();
 503                 }
 504
 505         }
 506
 507         function imageLinks()
 508         {
 509                 global $wgUser, $wgOut;
 510
 511                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 512
 513                 $dbr = wfGetDB( DB_SLAVE );
 514                 $page = $dbr->tableName( 'page' );
 515                 $imagelinks = $dbr->tableName( 'imagelinks' );
 516
 517                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 518                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 519                 $sql = $dbr->limitResult($sql, 500, 0);
 520                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 521
 522                 if ( 0 == $dbr->numRows( $res ) ) {
 523                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 524                         return;
 525                 }
 526                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 527
 528                 $sk = $wgUser->getSkin();
 529                 while ( $s = $dbr->fetchObject( $res ) ) {
 530                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 531                         $link = $sk->makeKnownLinkObj( $name, "" );
 532                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 533                 }
 534                 $wgOut->addHTML( "</ul>\n" );
 535         }
 536
 537         /**
 538          * Delete the file, or an earlier version of it
 539          */
 540         public function delete() {
 541                 if( !$this->img->exists() || !$this->img->isLocal() ) {
 542                         // Standard article deletion
 543                         Article::delete();
 544                         return;
 545                 }
 546                 $deleter = new FileDeleteForm( $this->img );
 547                 $deleter->execute();
 548         }
 549
 550         /**
 551          * Revert the file to an earlier version
 552          */
 553         public function revert() {
 554                 $reverter = new FileRevertForm( $this->img );
 555                 $reverter->execute();
 556         }
 557
 558         /**
 559          * Override handling of action=purge
 560          */
 561         function doPurge() {
 562                 if( $this->img->exists() ) {
 563                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 564                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 565                         $update->doUpdate();
 566                         $this->img->upgradeRow();
 567                         $this->img->purgeCache();
 568                 } else {
 569                         wfDebug( "ImagePage::doPurge no image\n" );
 570                 }
 571                 parent::doPurge();
 572         }
 573
 574         /**
 575          * Display an error with a wikitext description
 576          */
 577         function showError( $description ) {
 578                 global $wgOut;
 579                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 580                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 581                 $wgOut->setArticleRelated( false );
 582                 $wgOut->enableClientCache( false );
 583                 $wgOut->addWikiText( $description );
 584         }
 585
 586 }
 587
 588 /**
 589  * Builds the image revision log shown on image pages
 590  *
 591  * @addtogroup Media
 592  */
 593 class ImageHistoryList {
 594
 595         protected $img, $skin, $title, $repo;
 596
 597         public function __construct( $skin, $img ) {
 598                 $this->skin = $skin;
 599                 $this->img = $img;
 600                 $this->title = $img->getTitle();
 601         }
 602
 603         public function beginImageHistoryList() {
 604                 global $wgOut, $wgUser;
 605                 $deleteColumn = $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deleterevision' );
 606                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 607                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 608                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 609                         . '<tr><td></td>'
 610                         . ( $this->img->isLocal() && $deleteColumn ? '<td></td>' : '' )
 611                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 612                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 613                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 614                         . '<th class="mw-imagepage-filesize">' . wfMsgHtml( 'filehist-filesize' ) . '</th>'
 615                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 616                         . "</tr>\n";
 617         }
 618
 619         public function endImageHistoryList() {
 620                 return "</table>\n";
 621         }
 622
 623         public function imageHistoryLine( $iscur, $file ) {
 624                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 625
 626                 $timestamp = wfTimestamp(TS_MW, $file->getTimestamp());
 627                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 628                 $user = $file->getUser('id');
 629                 $usertext = $file->getUser('text');
 630                 $size = $file->getSize();
 631                 $description = $file->getDescription();
 632                 $dims = $file->getDimensionsString();
 633                 $sha1 = $file->getSha1();
 634
 635                 $local = $this->img->isLocal();
 636                 $row = '';
 637
 638                 // Deletion link
 639                 if( $local && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ) {
 640                         $row .= '<td>';
 641                         # Link to remove from history
 642                         if( $wgUser->isAllowed( 'delete' ) ) {
 643                                 $q = array();
 644                                 $q[] = 'action=delete';
 645                                 if( !$iscur )
 646                                         $q[] = 'oldimage=' . urlencode( $img );
 647                                 $row .= $this->skin->makeKnownLinkObj(
 648                                         $this->title,
 649                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 650                                         implode( '&', $q )
 651                                 );
 652                                 $row .= '<br/>';
 653                         }
 654                         # Link to hide content
 655                         if( $wgUser->isAllowed( 'deleterevision' ) ) {
 656                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 657                                 // If file is top revision or locked from this user, don't link
 658                                 if( $iscur || !$file->userCan(File::DELETED_RESTRICTED) ) {
 659                                         $del = wfMsgHtml( 'rev-delundel' );
 660                                 } else {
 661                                         // If the file was hidden, link to sha-1
 662                                         list($ts,$name) = explode('!',$img,2);
 663                                         $del = $this->skin->makeKnownLinkObj( $revdel,  wfMsg( 'rev-delundel' ),
 664                                                 'target=' . urlencode( $wgTitle->getPrefixedText() ) .
 665                                                 '&oldimage=' . urlencode( $ts ) );
 666                                         // Bolden oversighted content
 667                                         if( $file->isDeleted(File::DELETED_RESTRICTED) )
 668                                                 $del = "<strong>$del</strong>";
 669                                 }
 670                                 $row .= "<tt><small>$del</small></tt>";
 671                         }
 672                         $row .= '</td>';
 673                 }
 674
 675                 // Reversion link/current indicator
 676                 $row .= '<td>';
 677                 if( $iscur ) {
 678                         $row .= wfMsgHtml( 'filehist-current' );
 679                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 680                         if( $file->isDeleted(File::DELETED_FILE) ) {
 681                                 $row .= wfMsgHtml('filehist-revert');
 682                         } else {
 683                                 $q = array();
 684                                 $q[] = 'action=revert';
 685                                 $q[] = 'oldimage=' . urlencode( $img );
 686                                 $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 687                                 $row .= $this->skin->makeKnownLinkObj( $this->title,
 688                                         wfMsgHtml( 'filehist-revert' ),
 689                                         implode( '&', $q ) );
 690                         }
 691                 }
 692                 $row .= '</td>';
 693
 694                 // Date/time and image link
 695                 $row .= '<td>';
 696                 if( !$file->userCan(File::DELETED_FILE) ) {
 697                         # Don't link to unviewable files
 698                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 699                 } else if( $file->isDeleted(File::DELETED_FILE) ) {
 700                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 701                         # Make a link to review the image
 702                         $url = $this->skin->makeKnownLinkObj( $revdel, $wgLang->timeAndDate( $timestamp, true ),
 703                                 "target=".$wgTitle->getPrefixedText()."&file=$sha1.".$this->img->getExtension() );
 704                         $row .= '<span class="history-deleted">'.$url.'</span>';
 705                 } else {
 706                         $url = $iscur ? $this->img->getUrl() : $this->img->getArchiveUrl( $img );
 707                         $row .= Xml::element( 'a',
 708                                 array( 'href' => $url ),
 709                                 $wgLang->timeAndDate( $timestamp, true ) );
 710                 }
 711
 712                 $row .= '</td>';
 713
 714                 // Uploading user
 715                 $row .= '<td>';
 716                 if( $local ) {
 717                         // Hide deleted usernames
 718                         if( $file->isDeleted(File::DELETED_USER) )
 719                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 720                         else
 721                                 $row .= $this->skin->userLink( $user, $usertext ) .
 722                                         $this->skin->userToolLinks( $user, $usertext );
 723                 } else {
 724                         $row .= htmlspecialchars( $usertext );
 725                 }
 726                 $row .= '</td>';
 727
 728                 // Image dimensions
 729                 $row .= '<td>' . htmlspecialchars( $dims ) . '</td>';
 730
 731                 // File size
 732                 $row .= '<td class="mw-imagepage-filesize">' . $this->skin->formatSize( $size ) . '</td>';
 733
 734                 // Don't show deleted descriptions
 735                 if ( $file->isDeleted(File::DELETED_COMMENT) )
 736                         $row .= '<td><span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span></td>';
 737                 else
 738                         $row .= '<td>' . $this->skin->commentBlock( $description, $this->title ) . '</td>';
 739
 740                 return "<tr>{$row}</tr>\n";
 741         }
 742 }