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                 if ( $this->img->isLocal() ) $this->imageRedirects();
  95
  96                 if ( $showmeta ) {
  97                         global $wgStylePath, $wgStyleVersion;
  98                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
  99                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
 100                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
 101                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 102                         $wgOut->addHTML(
 103                                 "<script type=\"text/javascript\" src=\"$wgStylePath/common/metadata.js?$wgStyleVersion\"></script>\n" .
 104                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
 105                 }
 106         }
 107
 108         public function getRedirectTarget() {
 109                 if ( $this->img->isLocal() )
 110                         return parent::getRedirectTarget();
 111
 112                 // Foreign image page
 113                 $from = $this->img->getRedirected();
 114                 $to = $this->img->getName();
 115                 if ($from == $to) return null;
 116                 return $this->mRedirectTarget = Title::makeTitle( NS_IMAGE, $to );
 117         }
 118         public function followRedirect() {
 119                 if ( $this->img->isLocal() )
 120                         return parent::followRedirect();
 121
 122                 $from = $this->img->getRedirected();
 123                 $to = $this->img->getName();
 124                 if ($from == $to) return false;
 125                 return Title::makeTitle( NS_IMAGE, $to );
 126         }
 127         public function isRedirect( $text = false ) {
 128                 if ( $this->img->isLocal() )
 129                         return parent::isRedirect( $text );
 130
 131                 return (bool)$this->img->getRedirected();
 132         }
 133
 134         public function isLocal() {
 135                 return $this->img->isLocal();
 136         }
 137
 138         /**
 139          * Create the TOC
 140          *
 141          * @access private
 142          *
 143          * @param bool $metadata Whether or not to show the metadata link
 144          * @return string
 145          */
 146         function showTOC( $metadata ) {
 147                 global $wgLang;
 148                 $r = '<ul id="filetoc">
 149                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 150                         <li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>
 151                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 152                         ($metadata ? ' <li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 153                 </ul>';
 154                 return $r;
 155         }
 156
 157         /**
 158          * Make a table with metadata to be shown in the output page.
 159          *
 160          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 161          *
 162          * @access private
 163          *
 164          * @param array $exif The array containing the EXIF data
 165          * @return string
 166          */
 167         function makeMetadataTable( $metadata ) {
 168                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 169                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 170                 foreach ( $metadata as $type => $stuff ) {
 171                         foreach ( $stuff as $v ) {
 172                                 $class = Sanitizer::escapeId( $v['id'] );
 173                                 if( $type == 'collapsed' ) {
 174                                         $class .= ' collapsable';
 175                                 }
 176                                 $r .= "|- class=\"$class\"\n";
 177                                 $r .= "!| {$v['name']}\n";
 178                                 $r .= "|| {$v['value']}\n";
 179                         }
 180                 }
 181                 $r .= '|}';
 182                 return $r;
 183         }
 184
 185         /**
 186          * Overloading Article's getContent method.
 187          *
 188          * Omit noarticletext if sharedupload; text will be fetched from the
 189          * shared upload server if possible.
 190          */
 191         function getContent() {
 192                 if( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 193                         return '';
 194                 }
 195                 return Article::getContent();
 196         }
 197
 198         function openShowImage() {
 199                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang, $wgContLang;
 200
 201                 $full_url  = $this->img->getURL();
 202                 $linkAttribs = false;
 203                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 204                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 205                         $sizeSel = User::getDefaultOption( 'imagesize' );
 206
 207                         // The user offset might still be incorrect, specially if
 208                         // $wgImageLimits got changed (see bug #8858).
 209                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 210                                 // Default to the first offset in $wgImageLimits
 211                                 $sizeSel = 0;
 212                         }
 213                 }
 214                 $max = $wgImageLimits[$sizeSel];
 215                 $maxWidth = $max[0];
 216                 $maxHeight = $max[1];
 217                 $sk = $wgUser->getSkin();
 218                 $dirmark = $wgContLang->getDirMark();
 219
 220                 if ( $this->img->exists() ) {
 221                         # image
 222                         $page = $wgRequest->getIntOrNull( 'page' );
 223                         if ( is_null( $page ) ) {
 224                                 $params = array();
 225                                 $page = 1;
 226                         } else {
 227                                 $params = array( 'page' => $page );
 228                         }
 229                         $width_orig = $this->img->getWidth();
 230                         $width = $width_orig;
 231                         $height_orig = $this->img->getHeight();
 232                         $height = $height_orig;
 233                         $mime = $this->img->getMimeType();
 234                         $showLink = false;
 235                         $linkAttribs = array( 'href' => $full_url );
 236                         $longDesc = $this->img->getLongDesc();
 237
 238                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this , &$wgOut ) )       ;
 239
 240                         if ( $this->img->allowInlineDisplay() ) {
 241                                 # image
 242
 243                                 # "Download high res version" link below the image
 244                                 #$msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->img->getSize() ), $mime );
 245                                 # We'll show a thumbnail of this image
 246                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 247                                         # Calculate the thumbnail size.
 248                                         # First case, the limiting factor is the width, not the height.
 249                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 250                                                 $height = round( $height * $maxWidth / $width);
 251                                                 $width = $maxWidth;
 252                                                 # Note that $height <= $maxHeight now.
 253                                         } else {
 254                                                 $newwidth = floor( $width * $maxHeight / $height);
 255                                                 $height = round( $height * $newwidth / $width );
 256                                                 $width = $newwidth;
 257                                                 # Note that $height <= $maxHeight now, but might not be identical
 258                                                 # because of rounding.
 259                                         }
 260                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 261                                         $msgsmall = wfMsgExt( 'show-big-image-thumb',
 262                                                 array( 'parseinline' ), $wgLang->formatNum( $width ), $wgLang->formatNum( $height ) );
 263                                 } else {
 264                                         # Image is small enough to show full size on image page
 265                                         $msgbig = htmlspecialchars( $this->img->getName() );
 266                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 267                                 }
 268
 269                                 $params['width'] = $width;
 270                                 $thumbnail = $this->img->transform( $params );
 271
 272                                 $anchorclose = "<br />";
 273                                 if( $this->img->mustRender() ) {
 274                                         $showLink = true;
 275                                 } else {
 276                                         $anchorclose .=
 277                                                 $msgsmall .
 278                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 279                                 }
 280
 281                                 if ( $this->img->isMultipage() ) {
 282                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 283                                 }
 284
 285                                 if ( $thumbnail ) {
 286                                         $options = array(
 287                                                 'alt' => $this->img->getTitle()->getPrefixedText(),
 288                                                 'file-link' => true,
 289                                         );
 290                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 291                                                 $thumbnail->toHtml( $options ) .
 292                                                 $anchorclose . '</div>' );
 293                                 }
 294
 295                                 if ( $this->img->isMultipage() ) {
 296                                         $count = $this->img->pageCount();
 297
 298                                         if ( $page > 1 ) {
 299                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 300                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 301                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 302                                                         array( 'page' => $page - 1 ) );
 303                                         } else {
 304                                                 $thumb1 = '';
 305                                         }
 306
 307                                         if ( $page < $count ) {
 308                                                 $label = wfMsg( 'imgmultipagenext' );
 309                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 310                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->img, $link, $label, 'none',
 311                                                         array( 'page' => $page + 1 ) );
 312                                         } else {
 313                                                 $thumb2 = '';
 314                                         }
 315
 316                                         global $wgScript;
 317                                         $select = '<form name="pageselector" action="' .
 318                                                 htmlspecialchars( $wgScript ) .
 319                                                 '" method="get" onchange="document.pageselector.submit();">' .
 320                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() );
 321                                         $select .= $wgOut->parse( wfMsg( 'imgmultigotopre' ), false ) .
 322                                                 ' <select id="pageselector" name="page">';
 323                                         for ( $i=1; $i <= $count; $i++ ) {
 324                                                 $select .= Xml::option( $wgLang->formatNum( $i ), $i,
 325                                                         $i == $page );
 326                                         }
 327                                         $select .= '</select>' . $wgOut->parse( wfMsg( 'imgmultigotopost' ), false ) .
 328                                                 '<input type="submit" value="' .
 329                                                 htmlspecialchars( wfMsg( 'imgmultigo' ) ) . '"></form>';
 330
 331                                         $wgOut->addHTML( '</td><td><div class="multipageimagenavbox">' .
 332                                                 "$select<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>" );
 333                                 }
 334                         } else {
 335                                 #if direct link is allowed but it's not a renderable image, show an icon.
 336                                 if ($this->img->isSafeFile()) {
 337                                         $icon= $this->img->iconThumb();
 338
 339                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 340                                         $icon->toHtml( array( 'desc-link' => true ) ) .
 341                                         '</div>' );
 342                                 }
 343
 344                                 $showLink = true;
 345                         }
 346
 347
 348                         if ($showLink) {
 349                                 $filename = wfEscapeWikiText( $this->img->getName() );
 350
 351                                 if (!$this->img->isSafeFile()) {
 352                                         $warning = wfMsgNoTrans( 'mediawarning' );
 353                                         $wgOut->addWikiText( <<<EOT
 354 <div class="fullMedia">
 355 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 356 <span class="fileInfo"> $longDesc</span>
 357 </div>
 358
 359 <div class="mediaWarning">$warning</div>
 360 EOT
 361                                                 );
 362                                 } else {
 363                                         $wgOut->addWikiText( <<<EOT
 364 <div class="fullMedia">
 365 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 366 </div>
 367 EOT
 368                                                 );
 369                                 }
 370                         }
 371
 372                         if(!$this->img->isLocal()) {
 373                                 $this->printSharedImageText();
 374                         }
 375                 } else {
 376                         # Image does not exist
 377
 378                         $title = SpecialPage::getTitleFor( 'Upload' );
 379                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 380                                 'wpDestFile=' . urlencode( $this->img->getName() ) );
 381                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 382                 }
 383         }
 384
 385         /**
 386          * Show a notice that the file is from a shared repository
 387          */
 388         function printSharedImageText() {
 389                 global $wgOut, $wgUser;
 390
 391                 $descUrl = $this->img->getDescriptionUrl();
 392                 $descText = $this->img->getDescriptionText();
 393                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml( 'sharedupload' );
 394                 if ( $descUrl ) {
 395                         $sk = $wgUser->getSkin();
 396                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadwiki-linktext' ) );
 397                         $msg = ( $descText ) ? 'shareduploadwiki-desc' : 'shareduploadwiki';
 398                         $msg = wfMsgExt( $msg, array( 'parseinline', 'replaceafter' ), $link );
 399                         if ( $msg != '-' ) {
 400                                 # Show message only if not voided by local sysops
 401                                 $s .= $msg;
 402                         }
 403                 }
 404                 $s .= "</div>";
 405                 $wgOut->addHTML( $s );
 406
 407                 if ( $descText ) {
 408                         $this->mExtraDescription = $descText;
 409                 }
 410         }
 411
 412         function checkSharedConflict() {
 413                 global $wgOut, $wgUser;
 414                 $repoGroup = RepoGroup::singleton();
 415                 if( !$repoGroup->hasForeignRepos() ) {
 416                         return;
 417                 }
 418                 if( !$this->img->isLocal() ) {
 419                         return;
 420                 }
 421
 422                 $this->dupFile = null;
 423                 $repoGroup->forEachForeignRepo( array( $this, 'checkSharedConflictCallback' ) );
 424
 425                 if( !$this->dupFile )
 426                         return;
 427                 $dupfile = $this->dupFile;
 428                 $same = (
 429                         ($this->img->getSha1() == $dupfile->getSha1()) &&
 430                         ($this->img->getSize() == $dupfile->getSize())
 431                 );
 432
 433                 $sk = $wgUser->getSkin();
 434                 $descUrl = $dupfile->getDescriptionUrl();
 435                 if( $same ) {
 436                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadduplicate-linktext' ) );
 437                         $wgOut->addHTML( '<div id="shared-image-dup">' . wfMsgWikiHtml( 'shareduploadduplicate', $link ) . '</div>' );
 438                 } else {
 439                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadconflict-linktext' ) );
 440                         $wgOut->addHTML( '<div id="shared-image-conflict">' . wfMsgWikiHtml( 'shareduploadconflict', $link ) . '</div>' );
 441                 }
 442         }
 443
 444         function checkSharedConflictCallback( $repo ) {
 445                 $dupfile = $repo->newFile( $this->img->getTitle() );
 446                 if( $dupfile->exists() )
 447                         $this->dupFile = $dupfile;
 448                 return $dupfile->exists();
 449         }
 450
 451         function getUploadUrl() {
 452                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 453                 return $uploadTitle->getFullUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 454         }
 455
 456         /**
 457          * Print out the various links at the bottom of the image page, e.g. reupload,
 458          * external editing (and instructions link) etc.
 459          */
 460         function uploadLinksBox() {
 461                 global $wgUser, $wgOut;
 462
 463                 if( !$this->img->isLocal() )
 464                         return;
 465
 466                 $sk = $wgUser->getSkin();
 467
 468                 $wgOut->addHtml( '<br /><ul>' );
 469
 470                 # "Upload a new version of this file" link
 471                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 472                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 473                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 474                 }
 475
 476                 # Link to Special:FileDuplicateSearch
 477                 $dupeLink = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'FileDuplicateSearch', $this->mTitle->getDBkey() ), wfMsgHtml( 'imagepage-searchdupe' ) );
 478                 $wgOut->addHtml( "<li>{$dupeLink}</li>" );
 479
 480                 # External editing link
 481                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 482                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 483
 484                 $wgOut->addHtml( '</ul>' );
 485         }
 486
 487         function closeShowImage()
 488         {
 489                 # For overloading
 490
 491         }
 492
 493         /**
 494          * If the page we've just displayed is in the "Image" namespace,
 495          * we follow it with an upload history of the image and its usage.
 496          */
 497         function imageHistory()
 498         {
 499                 global $wgUser, $wgOut, $wgUseExternalEditor;
 500
 501                 $sk = $wgUser->getSkin();
 502
 503                 if ( $this->img->exists() ) {
 504                         $list = new ImageHistoryList( $sk, $this->current );
 505                         $file = $this->current;
 506                         $dims = $file->getDimensionsString();
 507                         $s = $list->beginImageHistoryList() .
 508                                 $list->imageHistoryLine( true, $file );
 509                         // old image versions
 510                         $hist = $this->img->getHistory();
 511                         foreach( $hist as $file ) {
 512                                 $dims = $file->getDimensionsString();
 513                                 $s .= $list->imageHistoryLine( false, $file );
 514                         }
 515                         $s .= $list->endImageHistoryList();
 516                 } else { $s=''; }
 517                 $wgOut->addHTML( $s );
 518
 519                 $this->img->resetHistory();     // free db resources
 520
 521                 # Exist check because we don't want to show this on pages where an image
 522                 # doesn't exist along with the noimage message, that would suck. -ævar
 523                 if( $wgUseExternalEditor && $this->img->exists() ) {
 524                         $this->uploadLinksBox();
 525                 }
 526
 527         }
 528
 529         function imageLinks()
 530         {
 531                 global $wgUser, $wgOut;
 532
 533                 $limit = 100;
 534
 535                 $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'filelinks' ), wfMsg( 'imagelinks' ) ) . "\n" );
 536
 537                 $dbr = wfGetDB( DB_SLAVE );
 538
 539                 $res = $dbr->select(
 540                         array( 'imagelinks', 'page' ),
 541                         array( 'page_namespace', 'page_title' ),
 542                         array( 'il_to' => $this->mTitle->getDBkey(), 'il_from = page_id' ),
 543                         __METHOD__,
 544                         array( 'LIMIT' => $limit + 1)
 545                 );
 546
 547                 if ( 0 == $dbr->numRows( $res ) ) {
 548                         $wgOut->addWikiMsg( 'nolinkstoimage' );
 549                         return;
 550                 }
 551                 $wgOut->addWikiMsg( 'linkstoimage' );
 552                 $wgOut->addHTML( "<ul>\n" );
 553
 554                 $sk = $wgUser->getSkin();
 555                 $count = 0;
 556                 while ( $s = $res->fetchObject() ) {
 557                         $count++;
 558                         if ( $count <= $limit ) {
 559                                 // We have not yet reached the extra one that tells us there is more to fetch
 560                                 $name = Title::makeTitle( $s->page_namespace, $s->page_title );
 561                                 $link = $sk->makeKnownLinkObj( $name, "" );
 562                                 $wgOut->addHTML( "<li>{$link}</li>\n" );
 563                         }
 564                 }
 565                 $wgOut->addHTML( "</ul>\n" );
 566                 $res->free();
 567
 568                 // Add a links to [[Special:Whatlinkshere]]
 569                 if ( $count > $limit )
 570                         $wgOut->addWikiMsg( 'morelinkstoimage', $this->mTitle->getPrefixedDBkey() );
 571         }
 572
 573         function imageRedirects()
 574         {
 575                 global $wgUser, $wgOut;
 576
 577                 $dbr = wfGetDB( DB_SLAVE );
 578                 $res = $dbr->select(
 579                         array( 'redirect', 'page' ),
 580                         array( 'page_title' ),
 581                         array(
 582                                 'rd_namespace' => NS_IMAGE,
 583                                 'rd_title' => $this->mTitle->getDBkey(),
 584                                 'page_namespace' => NS_IMAGE,
 585                                 'rd_from = page_id'
 586                         ),
 587                         __METHOD__
 588                 );
 589
 590
 591                 if ( 0 == $dbr->numRows( $res ) )
 592                         return;
 593
 594                 $wgOut->addWikiMsg( 'redirectstofile' );
 595                 $wgOut->addHTML( "<ul>\n" );
 596
 597                 $sk = $wgUser->getSkin();
 598                 while ( $row = $dbr->fetchObject( $res ) ) {
 599                         $name = Title::makeTitle( NS_IMAGE, $row->page_title );
 600                         $link = $sk->makeKnownLinkObj( $name, "" );
 601                         wfDebug("Image redirect: {$row->page_title}\n");
 602                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 603                 }
 604                 $wgOut->addHTML( "</ul>\n" );
 605
 606                 $res->free();
 607         }
 608
 609         /**
 610          * Delete the file, or an earlier version of it
 611          */
 612         public function delete() {
 613                 if( !$this->img->exists() || !$this->img->isLocal() ) {
 614                         // Standard article deletion
 615                         Article::delete();
 616                         return;
 617                 }
 618                 $deleter = new FileDeleteForm( $this->img );
 619                 $deleter->execute();
 620         }
 621
 622         /**
 623          * Revert the file to an earlier version
 624          */
 625         public function revert() {
 626                 $reverter = new FileRevertForm( $this->img );
 627                 $reverter->execute();
 628         }
 629
 630         /**
 631          * Override handling of action=purge
 632          */
 633         function doPurge() {
 634                 if( $this->img->exists() ) {
 635                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 636                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 637                         $update->doUpdate();
 638                         $this->img->upgradeRow();
 639                         $this->img->purgeCache();
 640                 } else {
 641                         wfDebug( "ImagePage::doPurge no image\n" );
 642                 }
 643                 parent::doPurge();
 644         }
 645
 646         /**
 647          * Display an error with a wikitext description
 648          */
 649         function showError( $description ) {
 650                 global $wgOut;
 651                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 652                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 653                 $wgOut->setArticleRelated( false );
 654                 $wgOut->enableClientCache( false );
 655                 $wgOut->addWikiText( $description );
 656         }
 657
 658 }
 659
 660 /**
 661  * Builds the image revision log shown on image pages
 662  *
 663  * @addtogroup Media
 664  */
 665 class ImageHistoryList {
 666
 667         protected $img, $skin, $title, $repo;
 668
 669         public function __construct( $skin, $img ) {
 670                 $this->skin = $skin;
 671                 $this->img = $img;
 672                 $this->title = $img->getTitle();
 673         }
 674
 675         public function beginImageHistoryList() {
 676                 global $wgOut, $wgUser;
 677                 $deleteColumn = $wgUser->isAllowed( 'delete' ) || $wgUser->isAllowed( 'deleterevision' );
 678                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 679                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 680                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 681                         . '<tr><td></td>'
 682                         . ( $this->img->isLocal() && $deleteColumn ? '<td></td>' : '' )
 683                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 684                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 685                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 686                         . '<th class="mw-imagepage-filesize">' . wfMsgHtml( 'filehist-filesize' ) . '</th>'
 687                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 688                         . "</tr>\n";
 689         }
 690
 691         public function endImageHistoryList() {
 692                 return "</table>\n";
 693         }
 694
 695         public function imageHistoryLine( $iscur, $file ) {
 696                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 697
 698                 $timestamp = wfTimestamp(TS_MW, $file->getTimestamp());
 699                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 700                 $user = $file->getUser('id');
 701                 $usertext = $file->getUser('text');
 702                 $size = $file->getSize();
 703                 $description = $file->getDescription();
 704                 $dims = $file->getDimensionsString();
 705                 $sha1 = $file->getSha1();
 706
 707                 $local = $this->img->isLocal();
 708                 $row = '';
 709
 710                 // Deletion link
 711                 if( $local && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ) {
 712                         $row .= '<td>';
 713                         # Link to remove from history
 714                         if( $wgUser->isAllowed( 'delete' ) ) {
 715                                 $q = array();
 716                                 $q[] = 'action=delete';
 717                                 if( !$iscur )
 718                                         $q[] = 'oldimage=' . urlencode( $img );
 719                                 $row .= $this->skin->makeKnownLinkObj(
 720                                         $this->title,
 721                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 722                                         implode( '&', $q )
 723                                 );
 724                                 $row .= '<br/>';
 725                         }
 726                         # Link to hide content
 727                         if( $wgUser->isAllowed( 'deleterevision' ) ) {
 728                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 729                                 // If file is top revision or locked from this user, don't link
 730                                 if( $iscur || !$file->userCan(File::DELETED_RESTRICTED) ) {
 731                                         $del = wfMsgHtml( 'rev-delundel' );
 732                                 } else {
 733                                         // If the file was hidden, link to sha-1
 734                                         list($ts,$name) = explode('!',$img,2);
 735                                         $del = $this->skin->makeKnownLinkObj( $revdel,  wfMsg( 'rev-delundel' ),
 736                                                 'target=' . urlencode( $wgTitle->getPrefixedText() ) .
 737                                                 '&oldimage=' . urlencode( $ts ) );
 738                                         // Bolden oversighted content
 739                                         if( $file->isDeleted(File::DELETED_RESTRICTED) )
 740                                                 $del = "<strong>$del</strong>";
 741                                 }
 742                                 $row .= "<tt><small>$del</small></tt>";
 743                         }
 744                         $row .= '</td>';
 745                 }
 746
 747                 // Reversion link/current indicator
 748                 $row .= '<td>';
 749                 if( $iscur ) {
 750                         $row .= wfMsgHtml( 'filehist-current' );
 751                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 752                         if( $file->isDeleted(File::DELETED_FILE) ) {
 753                                 $row .= wfMsgHtml('filehist-revert');
 754                         } else {
 755                                 $q = array();
 756                                 $q[] = 'action=revert';
 757                                 $q[] = 'oldimage=' . urlencode( $img );
 758                                 $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 759                                 $row .= $this->skin->makeKnownLinkObj( $this->title,
 760                                         wfMsgHtml( 'filehist-revert' ),
 761                                         implode( '&', $q ) );
 762                         }
 763                 }
 764                 $row .= '</td>';
 765
 766                 // Date/time and image link
 767                 $row .= '<td>';
 768                 if( !$file->userCan(File::DELETED_FILE) ) {
 769                         # Don't link to unviewable files
 770                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 771                 } else if( $file->isDeleted(File::DELETED_FILE) ) {
 772                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 773                         # Make a link to review the image
 774                         $url = $this->skin->makeKnownLinkObj( $revdel, $wgLang->timeAndDate( $timestamp, true ),
 775                                 "target=".$wgTitle->getPrefixedText()."&file=$sha1.".$this->img->getExtension() );
 776                         $row .= '<span class="history-deleted">'.$url.'</span>';
 777                 } else {
 778                         $url = $iscur ? $this->img->getUrl() : $this->img->getArchiveUrl( $img );
 779                         $row .= Xml::element( 'a',
 780                                 array( 'href' => $url ),
 781                                 $wgLang->timeAndDate( $timestamp, true ) );
 782                 }
 783
 784                 $row .= '</td>';
 785
 786                 // Uploading user
 787                 $row .= '<td>';
 788                 if( $local ) {
 789                         // Hide deleted usernames
 790                         if( $file->isDeleted(File::DELETED_USER) )
 791                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 792                         else
 793                                 $row .= $this->skin->userLink( $user, $usertext ) .
 794                                         $this->skin->userToolLinks( $user, $usertext );
 795                 } else {
 796                         $row .= htmlspecialchars( $usertext );
 797                 }
 798                 $row .= '</td>';
 799
 800                 // Image dimensions
 801                 $row .= '<td>' . htmlspecialchars( $dims ) . '</td>';
 802
 803                 // File size
 804                 $row .= '<td class="mw-imagepage-filesize">' . $this->skin->formatSize( $size ) . '</td>';
 805
 806                 // Don't show deleted descriptions
 807                 if ( $file->isDeleted(File::DELETED_COMMENT) )
 808                         $row .= '<td><span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span></td>';
 809                 else
 810                         $row .= '<td>' . $this->skin->commentBlock( $description, $this->title ) . '</td>';
 811
 812                 return "<tr>{$row}</tr>\n";
 813         }
 814 }