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