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 $k => $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                                 $imgAttribs = array(
 246                                         'border' => 0,
 247                                         'alt' => $this->img->getTitle()->getPrefixedText()
 248                                 );
 249
 250                                 if ( $thumbnail ) {
 251                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 252                                                 $thumbnail->toHtml( $imgAttribs, $linkAttribs ) .
 253                                                 $anchorclose . '</div>' );
 254                                 }
 255
 256                                 if ( $this->img->isMultipage() ) {
 257                                         $count = $this->img->pageCount();
 258
 259                                         if ( $page > 1 ) {
 260                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 261                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 262                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 263                                                         array( 'page' => $page - 1 ) );
 264                                         } else {
 265                                                 $thumb1 = '';
 266                                         }
 267
 268                                         if ( $page < $count ) {
 269                                                 $label = wfMsg( 'imgmultipagenext' );
 270                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 271                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 272                                                         array( 'page' => $page + 1 ) );
 273                                         } else {
 274                                                 $thumb2 = '';
 275                                         }
 276
 277                                         global $wgScript;
 278                                         $select = '<form name="pageselector" action="' .
 279                                                 htmlspecialchars( $wgScript ) .
 280                                                 '" method="get" onchange="document.pageselector.submit();">' .
 281                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 282                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 283                                                 ' <select id="pageselector" name="page">';
 284                                         for ( $i=1; $i <= $count; $i++ ) {
 285                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 286                                                         $i == $page );
 287                                         }
 288                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 289                                                 '<input type="submit" value="' .
 290                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 291
 292                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 293                                                 "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 294                                 }
 295                         } else {
 296                                 #if direct link is allowed but it's not a renderable image, show an icon.
 297                                 if ($this->img->isSafeFile()) {
 298                                         $icon= $this->img->iconThumb();
 299
 300                                         $wgOut->addHTML( '<div class="fullImageLink" id="file"><a href="' . $full_url . '">' .
 301                                         $icon->toHtml() .
 302                                         '</a></div>' );
 303                                 }
 304
 305                                 $showLink = true;
 306                         }
 307
 308
 309                         if ($showLink) {
 310                                 $filename = wfEscapeWikiText( $this->img->getName() );
 311                                 $info = wfMsg( 'file-info', $sk->formatSize( $this->img->getSize() ), $mime );
 312
 313                                 global $wgContLang;
 314                                 $dirmark = $wgContLang->getDirMark();
 315                                 if (!$this->img->isSafeFile()) {
 316                                         $warning = wfMsg( 'mediawarning' );
 317                                         $wgOut->addWikiText( <<<EOT
 318 <div class="fullMedia">
 319 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 320 <span class="fileInfo"> $longDesc</span>
 321 </div>
 322
 323 <div class="mediaWarning">$warning</div>
 324 EOT
 325                                                 );
 326                                 } else {
 327                                         $wgOut->addWikiText( <<<EOT
 328 <div class="fullMedia">
 329 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 330 </div>
 331 EOT
 332                                                 );
 333                                 }
 334                         }
 335
 336                         if(!$this->img->isLocal()) {
 337                                 $this->printSharedImageText();
 338                         }
 339                 } else {
 340                         # Image does not exist
 341
 342                         $title = SpecialPage::getTitleFor( 'Upload' );
 343                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 344                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 345                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 346                 }
 347         }
 348
 349         function printSharedImageText() {
 350                 global $wgOut, $wgUser;
 351
 352                 $descUrl = $this->img->getDescriptionUrl();
 353                 $descText = $this->img->getDescriptionText();
 354                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml("sharedupload");
 355                 if ( $descUrl && !$descText) {
 356                         $sk = $wgUser->getSkin();
 357                         $link = $sk->makeExternalLink( $descUrl, wfMsg('shareduploadwiki-linktext') );
 358                         $s .= " " . wfMsgWikiHtml('shareduploadwiki', $link);
 359                 }
 360                 $s .= "</div>";
 361                 $wgOut->addHTML($s);
 362
 363                 if ( $descText ) {
 364                         $this->mExtraDescription = $descText;
 365                 }
 366         }
 367
 368         function getUploadUrl() {
 369                 global $wgServer;
 370                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 371                 return $wgServer . $uploadTitle->getLocalUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 372         }
 373
 374         /**
 375          * Print out the various links at the bottom of the image page, e.g. reupload,
 376          * external editing (and instructions link) etc.
 377          */
 378         function uploadLinksBox() {
 379                 global $wgUser, $wgOut;
 380
 381                 if( !$this->img->isLocal() )
 382                         return;
 383
 384                 $sk = $wgUser->getSkin();
 385
 386                 $wgOut->addHtml( '<br /><ul>' );
 387
 388                 # "Upload a new version of this file" link
 389                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 390                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 391                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 392                 }
 393
 394                 # External editing link
 395                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 396                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 397
 398                 $wgOut->addHtml( '</ul>' );
 399         }
 400
 401         function closeShowImage()
 402         {
 403                 # For overloading
 404
 405         }
 406
 407         /**
 408          * If the page we've just displayed is in the "Image" namespace,
 409          * we follow it with an upload history of the image and its usage.
 410          */
 411         function imageHistory()
 412         {
 413                 global $wgUser, $wgOut, $wgUseExternalEditor;
 414
 415                 $sk = $wgUser->getSkin();
 416
 417                 $line = $this->img->nextHistoryLine();
 418
 419                 if ( $line ) {
 420                         $list = new ImageHistoryList( $sk, $this->img );
 421                         $file = $this->repo->newFileFromRow( $line );
 422                         $dims = $file->getDimensionsString();
 423                         $s = $list->beginImageHistoryList() .
 424                                 $list->imageHistoryLine( true, wfTimestamp(TS_MW, $line->img_timestamp),
 425                                         $this->mTitle->getDBkey(),  $line->img_user,
 426                                         $line->img_user_text, $line->img_size, $line->img_description,
 427                                         $dims
 428                                 );
 429
 430                         while ( $line = $this->img->nextHistoryLine() ) {
 431                                 $file = $this->repo->newFileFromRow( $line );
 432                                 $dims = $file->getDimensionsString();
 433                                 $s .= $list->imageHistoryLine( false, $line->oi_timestamp,
 434                                         $line->oi_archive_name, $line->oi_user,
 435                                         $line->oi_user_text, $line->oi_size, $line->oi_description,
 436                                         $dims
 437                                 );
 438                         }
 439                         $s .= $list->endImageHistoryList();
 440                 } else { $s=''; }
 441                 $wgOut->addHTML( $s );
 442
 443                 $this->img->resetHistory();     // free db resources
 444
 445                 # Exist check because we don't want to show this on pages where an image
 446                 # doesn't exist along with the noimage message, that would suck. -ævar
 447                 if( $wgUseExternalEditor && $this->img->exists() ) {
 448                         $this->uploadLinksBox();
 449                 }
 450
 451         }
 452
 453         function imageLinks()
 454         {
 455                 global $wgUser, $wgOut;
 456
 457                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 458
 459                 $dbr = wfGetDB( DB_SLAVE );
 460                 $page = $dbr->tableName( 'page' );
 461                 $imagelinks = $dbr->tableName( 'imagelinks' );
 462
 463                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 464                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id";
 465                 $sql = $dbr->limitResult($sql, 500, 0);
 466                 $res = $dbr->query( $sql, "ImagePage::imageLinks" );
 467
 468                 if ( 0 == $dbr->numRows( $res ) ) {
 469                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 470                         return;
 471                 }
 472                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 473
 474                 $sk = $wgUser->getSkin();
 475                 while ( $s = $dbr->fetchObject( $res ) ) {
 476                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 477                         $link = $sk->makeKnownLinkObj( $name, "" );
 478                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 479                 }
 480                 $wgOut->addHTML( "</ul>\n" );
 481         }
 482
 483         function delete()
 484         {
 485                 global $wgUser, $wgOut, $wgRequest;
 486
 487                 if ( !$this->img->exists() || !$this->img->isLocal() ) {
 488                         # Use standard article deletion
 489                         Article::delete();
 490                         return;
 491                 }
 492
 493                 $confirm = $wgRequest->wasPosted();
 494                 $reason = $wgRequest->getVal( 'wpReason' );
 495                 $image = $wgRequest->getVal( 'image' );
 496                 $oldimage = $wgRequest->getVal( 'oldimage' );
 497
 498                 # Only sysops can delete images. Previously ordinary users could delete
 499                 # old revisions, but this is no longer the case.
 500                 if ( !$wgUser->isAllowed('delete') ) {
 501                         $wgOut->permissionRequired( 'delete' );
 502                         return;
 503                 }
 504                 if ( $wgUser->isBlocked() ) {
 505                         $wgOut->blockedPage();
 506                         return;
 507                 }
 508                 if ( wfReadOnly() ) {
 509                         $wgOut->readOnlyPage();
 510                         return;
 511                 }
 512
 513                 # Better double-check that it hasn't been deleted yet!
 514                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 515                 if ( ( !is_null( $image ) )
 516                   && ( '' == trim( $image ) ) ) {
 517                         $wgOut->showFatalError( wfMsg( 'cannotdelete' ) );
 518                         return;
 519                 }
 520
 521                 # Deleting old images doesn't require confirmation
 522                 if ( !is_null( $oldimage ) || $confirm ) {
 523                         if( $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ), $oldimage ) ) {
 524                                 $this->doDeleteImage( $reason );
 525                         } else {
 526                                 $wgOut->showFatalError( wfMsg( 'sessionfailure' ) );
 527                         }
 528                         return;
 529                 }
 530
 531                 if ( !is_null( $image ) ) {
 532                         $q = '&image=' . urlencode( $image );
 533                 } else if ( !is_null( $oldimage ) ) {
 534                         $q = '&oldimage=' . urlencode( $oldimage );
 535                 } else {
 536                         $q = '';
 537                 }
 538                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 539         }
 540
 541         /*
 542          * Delete an image.
 543          * Called doDeleteImage() not doDelete() so that Article::delete() doesn't
 544          * call back to here.
 545          *
 546          * @param $reason User provided reason for deletion.
 547          */
 548         function doDeleteImage( $reason ) {
 549                 global $wgOut, $wgRequest;
 550
 551                 $oldimage = $wgRequest->getVal( 'oldimage' );
 552
 553                 if ( !is_null( $oldimage ) ) {
 554                         if ( strlen( $oldimage ) < 16 ) {
 555                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 556                                 return;
 557                         }
 558                         if( strpos( $oldimage, '/' ) !== false || strpos( $oldimage, '\\' ) !== false ) {
 559                                 $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 560                                 return;
 561                         }
 562                         $status = $this->doDeleteOldImage( $oldimage );
 563                         $deleted = $oldimage;
 564                 } else {
 565                         $status = $this->img->delete( $reason );
 566                         if ( !$status->isGood() ) {
 567                                 // Warning or error
 568                                 $wgOut->addWikiText( $status->getWikiText( 'filedeleteerror-short', 'filedeleteerror-long' ) );
 569                         }
 570                         if ( $status->ok ) {
 571                                 # Image itself is now gone, and database is cleaned.
 572                                 # Now we remove the image description page.
 573                                 $article = new Article( $this->mTitle );
 574                                 $article->doDeleteArticle( $reason ); # ignore errors
 575                                 $deleted = $this->img->getName();
 576                         }
 577                 }
 578
 579                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 580
 581                 if ( !$status->ok ) {
 582                         // Fatal error flagged
 583                         $wgOut->setPagetitle( wfMsg( 'errorpagetitle' ) );
 584                         $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 585                 } else {
 586                         // Operation completed
 587                         $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 588                         $loglink = '[[Special:Log/delete|' . wfMsg( 'deletionlog' ) . ']]';
 589                         $text = wfMsg( 'deletedtext', $deleted, $loglink );
 590                         $wgOut->addWikiText( $text );
 591                         $wgOut->returnToMain( false, $this->mTitle->getPrefixedText() );
 592                 }
 593         }
 594
 595         /**
 596          * Delete an old revision of an image,
 597          * @return FileRepoStatus
 598          */
 599         function doDeleteOldImage( $oldimage ) {
 600                 global $wgOut;
 601
 602                 $status = $this->img->deleteOld( $oldimage, '' );
 603                 if( !$status->isGood() ) {
 604                         $wgOut->addWikiText( $status->getWikiText( 'filedeleteerror-short', 'filedeleteerror-long' ) );
 605                 }
 606                 if ( $status->ok ) {
 607                         # Log the deletion
 608                         $log = new LogPage( 'delete' );
 609                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 610                 }
 611                 return $status;
 612         }
 613
 614         /**
 615          * Revert the file to an earlier version
 616          */
 617         function revert() {
 618                 $reverter = new FileRevertForm( $this->img );
 619                 $reverter->execute();
 620         }
 621
 622         /**
 623          * Override handling of action=purge
 624          */
 625         function doPurge() {
 626                 if( $this->img->exists() ) {
 627                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 628                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 629                         $update->doUpdate();
 630                         $this->img->upgradeRow();
 631                         $this->img->purgeCache();
 632                 } else {
 633                         wfDebug( "ImagePage::doPurge no image\n" );
 634                 }
 635                 parent::doPurge();
 636         }
 637
 638         /**
 639          * Display an error with a wikitext description
 640          */
 641         function showError( $description ) {
 642                 global $wgOut;
 643                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 644                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 645                 $wgOut->setArticleRelated( false );
 646                 $wgOut->enableClientCache( false );
 647                 $wgOut->addWikiText( $description );
 648         }
 649
 650 }
 651
 652 /**
 653  * Builds the image revision log shown on image pages
 654  *
 655  * @addtogroup Media
 656  */
 657 class ImageHistoryList {
 658
 659         protected $img, $skin, $title, $repo;
 660
 661         public function __construct( $skin, $img ) {
 662                 $this->skin = $skin;
 663                 $this->img = $img;
 664                 $this->title = $img->getTitle();
 665         }
 666
 667         public function beginImageHistoryList() {
 668                 global $wgOut, $wgUser;
 669                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 670                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 671                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 672                         . '<tr><td></td>'
 673                         . ( $this->img->isLocal() && $wgUser->isAllowed( 'delete' ) ? '<td></td>' : '' )
 674                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 675                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 676                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 677                         . '<th class="mw-imagepage-filesize">' . wfMsgHtml( 'filehist-filesize' ) . '</th>'
 678                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 679                         . "</tr>\n";
 680         }
 681
 682         public function endImageHistoryList() {
 683                 return "</table>\n";
 684         }
 685
 686         public function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description, $dims ) {
 687                 global $wgUser, $wgLang, $wgTitle, $wgContLang;
 688                 $local = $this->img->isLocal();
 689                 $row = '';
 690
 691                 // Deletion link
 692                 if( $local && $wgUser->isAllowed( 'delete' ) ) {
 693                         $row .= '<td>';
 694                         $q = array();
 695                         $q[] = 'action=delete';
 696                         $q[] = ( $iscur ? 'image=' . $this->title->getPartialUrl() : 'oldimage=' . urlencode( $img ) );
 697                         if( !$iscur )
 698                                 $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 699                         $row .= '(' . $this->skin->makeKnownLinkObj(
 700                                 $this->title,
 701                                 wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 702                                 implode( '&', $q )
 703                         ) . ')';
 704                         $row .= '</td>';
 705                 }
 706
 707                 // Reversion link/current indicator
 708                 $row .= '<td>';
 709                 if( $iscur ) {
 710                         $row .= '(' . wfMsgHtml( 'filehist-current' ) . ')';
 711                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 712                         $q = array();
 713                         $q[] = 'action=revert';
 714                         $q[] = 'oldimage=' . urlencode( $img );
 715                         $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 716                         $row .= '(' . $this->skin->makeKnownLinkObj(
 717                                 $this->title,
 718                                 wfMsgHtml( 'filehist-revert' ),
 719                                 implode( '&', $q )
 720                         ) . ')';
 721                 }
 722                 $row .= '</td>';
 723
 724                 // Date/time and image link
 725                 $row .= '<td>';
 726                 $url = $iscur ? $this->img->getUrl() : $this->img->getArchiveUrl( $img );
 727                 $row .= Xml::element(
 728                         'a',
 729                         array( 'href' => $url ),
 730                         $wgLang->timeAndDate( $timestamp, true )
 731                 );
 732                 $row .= '</td>';
 733
 734                 // Uploading user
 735                 $row .= '<td>';
 736                 if( $local ) {
 737                         $row .= $this->skin->userLink( $user, $usertext ) . $this->skin->userToolLinks( $user, $usertext );
 738                 } else {
 739                         $row .= htmlspecialchars( $usertext );
 740                 }
 741                 $row .= '</td>';
 742
 743                 // Image dimensions
 744                 $row .= '<td>' . htmlspecialchars( $dims ) . '</td>';
 745
 746                 // File size
 747                 $row .= '<td class="mw-imagepage-filesize">' . $this->skin->formatSize( $size ) . '</td>';
 748
 749                 // Comment
 750                 $row .= '<td>' . $this->skin->formatComment( $description, $this->title ) . '</td>';
 751
 752                 return "<tr>{$row}</tr>\n";
 753         }
 754
 755 }