includes/ImagePage.php

   1 <?php
   2
   3 if( !defined( 'MEDIAWIKI' ) )
   4         die( 1 );
   5
   6 /**
   7  * Special handling for image description pages
   8  *
   9  * @ingroup Media
  10  */
  11 class ImagePage extends Article {
  12
  13         /* private */ var $img;  // Image object
  14         /* private */ var $displayImg;
  15         /* private */ var $repo;
  16         /* private */ var $fileLoaded;
  17         var $mExtraDescription = false;
  18         var $dupes;
  19
  20         function __construct( $title ) {
  21                 parent::__construct( $title );
  22                 $this->dupes = null;
  23                 $this->repo = null;
  24         }
  25
  26         protected function loadFile() {
  27                 if ( $this->fileLoaded ) {
  28                         return true;
  29                 }
  30                 $this->fileLoaded = true;
  31
  32                 $this->displayImg = $this->img = false;
  33                 wfRunHooks( 'ImagePageFindFile', array( $this, &$this->img, &$this->displayImg ) );
  34                 if ( !$this->img ) {
  35                         $this->img = wfFindFile( $this->mTitle );
  36                         if ( !$this->img ) {
  37                                 $this->img = wfLocalFile( $this->mTitle );
  38                         }
  39                 }
  40                 if ( !$this->displayImg ) {
  41                         $this->displayImg = $this->img;
  42                 }
  43                 $this->repo = $this->img->getRepo();
  44         }
  45
  46         /**
  47          * Handler for action=render
  48          * Include body text only; none of the image extras
  49          */
  50         function render() {
  51                 global $wgOut;
  52                 $wgOut->setArticleBodyOnly( true );
  53                 parent::view();
  54         }
  55
  56         function view() {
  57                 global $wgOut, $wgShowEXIF, $wgRequest, $wgUser;
  58                 $this->loadFile();
  59
  60                 if ( $this->mTitle->getNamespace() == NS_IMAGE && $this->img->getRedirected() ) {
  61                         if ( $this->mTitle->getDBkey() == $this->img->getName() ) {
  62                                 // mTitle is the same as the redirect target so ask Article
  63                                 // to perform the redirect for us.
  64                                 return Article::view();
  65                         } else {
  66                                 // mTitle is not the same as the redirect target so it is
  67                                 // probably the redirect page itself. Fake the redirect symbol
  68                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  69                                 $this->viewRedirect( Title::makeTitle( NS_IMAGE, $this->img->getName() ),
  70                                         /* $overwriteSubtitle */ true, /* $forceKnown */ true );
  71                                 $this->viewUpdates();
  72                                 return;
  73                         }
  74                 }
  75
  76                 $diff = $wgRequest->getVal( 'diff' );
  77                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  78
  79                 if ( $this->mTitle->getNamespace() != NS_IMAGE || ( isset( $diff ) && $diffOnly ) )
  80                         return Article::view();
  81
  82                 if ( $wgShowEXIF && $this->displayImg->exists() ) {
  83                         // FIXME: bad interface, see note on MediaHandler::formatMetadata().
  84                         $formattedMetadata = $this->displayImg->formatMetadata();
  85                         $showmeta = $formattedMetadata !== false;
  86                 } else {
  87                         $showmeta = false;
  88                 }
  89
  90                 if ( $this->displayImg->exists() )
  91                         $wgOut->addHTML( $this->showTOC($showmeta) );
  92
  93                 $this->openShowImage();
  94
  95                 # No need to display noarticletext, we use our own message, output in openShowImage()
  96                 if ( $this->getID() ) {
  97                         Article::view();
  98                 } else {
  99                         # Just need to set the right headers
 100                         $wgOut->setArticleFlag( true );
 101                         $wgOut->setRobotpolicy( 'noindex,nofollow' );
 102                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
 103                         $this->viewUpdates();
 104                 }
 105
 106                 # Show shared description, if needed
 107                 if ( $this->mExtraDescription ) {
 108                         $fol = wfMsgNoTrans( 'shareddescriptionfollows' );
 109                         if( $fol != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $fol ) ) {
 110                                 $wgOut->addWikiText( $fol );
 111                         }
 112                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
 113                 } else {
 114                         $this->checkSharedConflict();
 115                 }
 116
 117                 $this->closeShowImage();
 118                 $this->imageHistory();
 119                 // TODO: Cleanup the following
 120
 121                 $wgOut->addHTML( Xml::element( 'h2',
 122                         array( 'id' => 'filelinks' ),
 123                         wfMsg( 'imagelinks' ) ) . "\n" );
 124                 $this->imageDupes();
 125                 // TODO: We may want to find local images redirecting to a foreign
 126                 // file: "The following local files redirect to this file"
 127                 if ( $this->img->isLocal() ) {
 128                         $this->imageRedirects();
 129                 }
 130                 $this->imageLinks();
 131
 132                 if ( $showmeta ) {
 133                         global $wgStylePath, $wgStyleVersion;
 134                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
 135                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
 136                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
 137                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 138                         $wgOut->addScriptFile( 'metadata.js' );
 139                         $wgOut->addHTML(
 140                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
 141                 }
 142         }
 143
 144         public function getRedirectTarget() {
 145                 $this->loadFile();
 146                 if ( $this->img->isLocal() ) {
 147                         return parent::getRedirectTarget();
 148                 }
 149                 // Foreign image page
 150                 $from = $this->img->getRedirected();
 151                 $to = $this->img->getName();
 152                 if ( $from == $to ) {
 153                         return null;
 154                 }
 155                 return $this->mRedirectTarget = Title::makeTitle( NS_IMAGE, $to );
 156         }
 157         public function followRedirect() {
 158                 $this->loadFile();
 159                 if ( $this->img->isLocal() ) {
 160                         return parent::followRedirect();
 161                 }
 162                 $from = $this->img->getRedirected();
 163                 $to = $this->img->getName();
 164                 if ( $from == $to ) {
 165                         return false;
 166                 }
 167                 return Title::makeTitle( NS_IMAGE, $to );
 168         }
 169         public function isRedirect( $text = false ) {
 170                 $this->loadFile();
 171                 if ( $this->img->isLocal() )
 172                         return parent::isRedirect( $text );
 173
 174                 return (bool)$this->img->getRedirected();
 175         }
 176
 177         public function isLocal() {
 178                 $this->loadFile();
 179                 return $this->img->isLocal();
 180         }
 181
 182         public function getFile() {
 183                 $this->loadFile();
 184                 return $this->img;
 185         }
 186
 187         public function getDisplayedFile() {
 188                 $this->loadFile();
 189                 return $this->displayImg;
 190         }
 191
 192         public function getDuplicates() {
 193                 $this->loadFile();
 194                 if ( !is_null($this->dupes) ) {
 195                         return $this->dupes;
 196                 }
 197                 if ( !( $hash = $this->img->getSha1() ) ) {
 198                         return $this->dupes = array();
 199                 }
 200                 $dupes = RepoGroup::singleton()->findBySha1( $hash );
 201                 // Remove duplicates with self and non matching file sizes
 202                 $self = $this->img->getRepoName().':'.$this->img->getName();
 203                 $size = $this->img->getSize();
 204                 foreach ( $dupes as $index => $file ) {
 205                         $key = $file->getRepoName().':'.$file->getName();
 206                         if ( $key == $self )
 207                                 unset( $dupes[$index] );
 208                         if ( $file->getSize() != $size )
 209                                 unset( $dupes[$index] );
 210                 }
 211                 return $this->dupes = $dupes;
 212
 213         }
 214
 215
 216         /**
 217          * Create the TOC
 218          *
 219          * @access private
 220          *
 221          * @param bool $metadata Whether or not to show the metadata link
 222          * @return string
 223          */
 224         function showTOC( $metadata ) {
 225                 global $wgLang;
 226                 $r = '<ul id="filetoc">
 227                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 228                         <li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>
 229                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 230                         ($metadata ? ' <li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 231                 </ul>';
 232                 return $r;
 233         }
 234
 235         /**
 236          * Make a table with metadata to be shown in the output page.
 237          *
 238          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 239          *
 240          * @access private
 241          *
 242          * @param array $exif The array containing the EXIF data
 243          * @return string
 244          */
 245         function makeMetadataTable( $metadata ) {
 246                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 247                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 248                 foreach ( $metadata as $type => $stuff ) {
 249                         foreach ( $stuff as $v ) {
 250                                 $class = Sanitizer::escapeId( $v['id'] );
 251                                 if( $type == 'collapsed' ) {
 252                                         $class .= ' collapsable';
 253                                 }
 254                                 $r .= "|- class=\"$class\"\n";
 255                                 $r .= "!| {$v['name']}\n";
 256                                 $r .= "|| {$v['value']}\n";
 257                         }
 258                 }
 259                 $r .= '|}';
 260                 return $r;
 261         }
 262
 263         /**
 264          * Overloading Article's getContent method.
 265          *
 266          * Omit noarticletext if sharedupload; text will be fetched from the
 267          * shared upload server if possible.
 268          */
 269         function getContent() {
 270                 $this->loadFile();
 271                 if( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 272                         return '';
 273                 }
 274                 return Article::getContent();
 275         }
 276
 277         function openShowImage() {
 278                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang, $wgContLang;
 279
 280                 $this->loadFile();
 281
 282                 $full_url  = $this->displayImg->getURL();
 283                 $linkAttribs = false;
 284                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 285                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 286                         $sizeSel = User::getDefaultOption( 'imagesize' );
 287
 288                         // The user offset might still be incorrect, specially if
 289                         // $wgImageLimits got changed (see bug #8858).
 290                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 291                                 // Default to the first offset in $wgImageLimits
 292                                 $sizeSel = 0;
 293                         }
 294                 }
 295                 $max = $wgImageLimits[$sizeSel];
 296                 $maxWidth = $max[0];
 297                 $maxHeight = $max[1];
 298                 $sk = $wgUser->getSkin();
 299                 $dirmark = $wgContLang->getDirMark();
 300
 301                 if ( $this->displayImg->exists() ) {
 302                         # image
 303                         $page = $wgRequest->getIntOrNull( 'page' );
 304                         if ( is_null( $page ) ) {
 305                                 $params = array();
 306                                 $page = 1;
 307                         } else {
 308                                 $params = array( 'page' => $page );
 309                         }
 310                         $width_orig = $this->displayImg->getWidth();
 311                         $width = $width_orig;
 312                         $height_orig = $this->displayImg->getHeight();
 313                         $height = $height_orig;
 314                         $mime = $this->displayImg->getMimeType();
 315                         $showLink = false;
 316                         $linkAttribs = array( 'href' => $full_url );
 317                         $longDesc = $this->displayImg->getLongDesc();
 318
 319                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this , &$wgOut ) )       ;
 320
 321                         if ( $this->displayImg->allowInlineDisplay() ) {
 322                                 # image
 323
 324                                 # "Download high res version" link below the image
 325                                 #$msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->displayImg->getSize() ), $mime );
 326                                 # We'll show a thumbnail of this image
 327                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 328                                         # Calculate the thumbnail size.
 329                                         # First case, the limiting factor is the width, not the height.
 330                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 331                                                 $height = round( $height * $maxWidth / $width);
 332                                                 $width = $maxWidth;
 333                                                 # Note that $height <= $maxHeight now.
 334                                         } else {
 335                                                 $newwidth = floor( $width * $maxHeight / $height);
 336                                                 $height = round( $height * $newwidth / $width );
 337                                                 $width = $newwidth;
 338                                                 # Note that $height <= $maxHeight now, but might not be identical
 339                                                 # because of rounding.
 340                                         }
 341                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 342                                         $msgsmall = wfMsgExt( 'show-big-image-thumb',
 343                                                 array( 'parseinline' ), $wgLang->formatNum( $width ), $wgLang->formatNum( $height ) );
 344                                 } else {
 345                                         # Image is small enough to show full size on image page
 346                                         $msgbig = htmlspecialchars( $this->displayImg->getName() );
 347                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 348                                 }
 349
 350                                 $params['width'] = $width;
 351                                 $thumbnail = $this->displayImg->transform( $params );
 352
 353                                 $anchorclose = "<br />";
 354                                 if( $this->displayImg->mustRender() ) {
 355                                         $showLink = true;
 356                                 } else {
 357                                         $anchorclose .=
 358                                                 $msgsmall .
 359                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 360                                 }
 361
 362                                 if ( $this->displayImg->isMultipage() ) {
 363                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 364                                 }
 365
 366                                 if ( $thumbnail ) {
 367                                         $options = array(
 368                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 369                                                 'file-link' => true,
 370                                         );
 371                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 372                                                 $thumbnail->toHtml( $options ) .
 373                                                 $anchorclose . '</div>' );
 374                                 }
 375
 376                                 if ( $this->displayImg->isMultipage() ) {
 377                                         $count = $this->displayImg->pageCount();
 378
 379                                         if ( $page > 1 ) {
 380                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 381                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 382                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 383                                                         array( 'page' => $page - 1 ) );
 384                                         } else {
 385                                                 $thumb1 = '';
 386                                         }
 387
 388                                         if ( $page < $count ) {
 389                                                 $label = wfMsg( 'imgmultipagenext' );
 390                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 391                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 392                                                         array( 'page' => $page + 1 ) );
 393                                         } else {
 394                                                 $thumb2 = '';
 395                                         }
 396
 397                                         global $wgScript;
 398
 399                                         $formParams = array(
 400                                                 'name' => 'pageselector',
 401                                                 'action' => $wgScript,
 402                                                 'onchange' => 'document.pageselector.submit();',
 403                                         );
 404
 405                                         $option = array();
 406                                         for ( $i=1; $i <= $count; $i++ ) {
 407                                                 $options[] = Xml::option( $wgLang->formatNum($i), $i, $i == $page );
 408                                         }
 409                                         $select = Xml::tags( 'select',
 410                                                 array( 'id' => 'pageselector', 'name' => 'page' ),
 411                                                 implode( "\n", $options ) );
 412
 413                                         $wgOut->addHTML(
 414                                                 '</td><td><div class="multipageimagenavbox">' .
 415                                                 Xml::openElement( 'form', $formParams ) .
 416                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() ) .
 417                                                 wfMsgExt( 'imgmultigoto', array( 'parseinline', 'replaceafter' ), $select ) .
 418                                                 Xml::submitButton( wfMsg( 'imgmultigo' ) ) .
 419                                                 Xml::closeElement( 'form' ) .
 420                                                 "<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>"
 421                                         );
 422                                 }
 423                         } else {
 424                                 #if direct link is allowed but it's not a renderable image, show an icon.
 425                                 if ( $this->displayImg->isSafeFile() ) {
 426                                         $icon= $this->displayImg->iconThumb();
 427
 428                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 429                                         $icon->toHtml( array( 'desc-link' => true ) ) .
 430                                         '</div>' );
 431                                 }
 432
 433                                 $showLink = true;
 434                         }
 435
 436
 437                         if ($showLink) {
 438                                 $filename = wfEscapeWikiText( $this->displayImg->getName() );
 439
 440                                 if ( !$this->displayImg->isSafeFile() ) {
 441                                         $warning = wfMsgNoTrans( 'mediawarning' );
 442                                         $wgOut->addWikiText( <<<EOT
 443 <div class="fullMedia">
 444 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 445 <span class="fileInfo"> $longDesc</span>
 446 </div>
 447
 448 <div class="mediaWarning">$warning</div>
 449 EOT
 450                                                 );
 451                                 } else {
 452                                         $wgOut->addWikiText( <<<EOT
 453 <div class="fullMedia">
 454 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 455 </div>
 456 EOT
 457                                                 );
 458                                 }
 459                         }
 460
 461                         if( !$this->displayImg->isLocal() ) {
 462                                 $this->printSharedImageText();
 463                         }
 464                 } else {
 465                         # Image does not exist
 466
 467                         $title = SpecialPage::getTitleFor( 'Upload' );
 468                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 469                                 'wpDestFile=' . urlencode( $this->displayImg->getName() ) );
 470                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 471                 }
 472         }
 473
 474         /**
 475          * Show a notice that the file is from a shared repository
 476          */
 477         function printSharedImageText() {
 478                 global $wgOut, $wgUser;
 479
 480                 $this->loadFile();
 481
 482                 $descUrl = $this->img->getDescriptionUrl();
 483                 $descText = $this->img->getDescriptionText();
 484                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml( 'sharedupload' );
 485                 if ( $descUrl ) {
 486                         $sk = $wgUser->getSkin();
 487                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadwiki-linktext' ) );
 488                         $msg = ( $descText ) ? 'shareduploadwiki-desc' : 'shareduploadwiki';
 489                         $msg = wfMsgExt( $msg, array( 'parseinline', 'replaceafter' ), $link );
 490                         if ( $msg != '-' ) {
 491                                 # Show message only if not voided by local sysops
 492                                 $s .= $msg;
 493                         }
 494                 }
 495                 $s .= "</div>";
 496                 $wgOut->addHTML( $s );
 497
 498                 if ( $descText ) {
 499                         $this->mExtraDescription = $descText;
 500                 }
 501         }
 502
 503         /*
 504          * Check for files with the same name on the foreign repos.
 505          */
 506         function checkSharedConflict() {
 507                 global $wgOut, $wgUser;
 508
 509                 $repoGroup = RepoGroup::singleton();
 510                 if( !$repoGroup->hasForeignRepos() ) {
 511                         return;
 512                 }
 513
 514                 $this->loadFile();
 515                 if( !$this->img->isLocal() ) {
 516                         return;
 517                 }
 518
 519                 $this->dupFile = null;
 520                 $repoGroup->forEachForeignRepo( array( $this, 'checkSharedConflictCallback' ) );
 521
 522                 if( !$this->dupFile )
 523                         return;
 524                 $dupfile = $this->dupFile;
 525                 $same = (
 526                         ($this->img->getSha1() == $dupfile->getSha1()) &&
 527                         ($this->img->getSize() == $dupfile->getSize())
 528                 );
 529
 530                 $sk = $wgUser->getSkin();
 531                 $descUrl = $dupfile->getDescriptionUrl();
 532                 if( $same ) {
 533                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadduplicate-linktext' ) );
 534                         $wgOut->addHTML( '<div id="shared-image-dup">' . wfMsgWikiHtml( 'shareduploadduplicate', $link ) . '</div>' );
 535                 } else {
 536                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadconflict-linktext' ) );
 537                         $wgOut->addHTML( '<div id="shared-image-conflict">' . wfMsgWikiHtml( 'shareduploadconflict', $link ) . '</div>' );
 538                 }
 539         }
 540
 541         function checkSharedConflictCallback( $repo ) {
 542                 $this->loadFile();
 543                 $dupfile = $repo->newFile( $this->img->getTitle() );
 544                 if( $dupfile && $dupfile->exists() ) {
 545                         $this->dupFile = $dupfile;
 546                         return $dupfile->exists();
 547                 }
 548                 return false;
 549         }
 550
 551         function getUploadUrl() {
 552                 $this->loadFile();
 553                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 554                 return $uploadTitle->getFullUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 555         }
 556
 557         /**
 558          * Print out the various links at the bottom of the image page, e.g. reupload,
 559          * external editing (and instructions link) etc.
 560          */
 561         function uploadLinksBox() {
 562                 global $wgUser, $wgOut;
 563
 564                 $this->loadFile();
 565                 if( !$this->img->isLocal() )
 566                         return;
 567
 568                 $sk = $wgUser->getSkin();
 569
 570                 $wgOut->addHtml( '<br /><ul>' );
 571
 572                 # "Upload a new version of this file" link
 573                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 574                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 575                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 576                 }
 577
 578                 # Link to Special:FileDuplicateSearch
 579                 $dupeLink = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'FileDuplicateSearch', $this->mTitle->getDBkey() ), wfMsgHtml( 'imagepage-searchdupe' ) );
 580                 $wgOut->addHtml( "<li>{$dupeLink}</li>" );
 581
 582                 # External editing link
 583                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 584                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 585
 586                 $wgOut->addHtml( '</ul>' );
 587         }
 588
 589         function closeShowImage()
 590         {
 591                 # For overloading
 592
 593         }
 594
 595         /**
 596          * If the page we've just displayed is in the "Image" namespace,
 597          * we follow it with an upload history of the image and its usage.
 598          */
 599         function imageHistory()
 600         {
 601                 global $wgOut, $wgUseExternalEditor;
 602
 603                 $this->loadFile();
 604                 if ( $this->img->exists() ) {
 605                         $list = new ImageHistoryList( $this );
 606                         $file = $this->img;
 607                         $dims = $file->getDimensionsString();
 608                         $s = $list->beginImageHistoryList();
 609                         $s .= $list->imageHistoryLine( true, $file );
 610                         // old image versions
 611                         $hist = $this->img->getHistory();
 612                         foreach( $hist as $file ) {
 613                                 $dims = $file->getDimensionsString();
 614                                 $s .= $list->imageHistoryLine( false, $file );
 615                         }
 616                         $s .= $list->endImageHistoryList();
 617                 } else { $s=''; }
 618                 $wgOut->addHTML( $s );
 619
 620                 $this->img->resetHistory();     // free db resources
 621
 622                 # Exist check because we don't want to show this on pages where an image
 623                 # doesn't exist along with the noimage message, that would suck. -ævar
 624                 if( $wgUseExternalEditor && $this->img->exists() ) {
 625                         $this->uploadLinksBox();
 626                 }
 627
 628         }
 629
 630         function imageLinks()
 631         {
 632                 global $wgUser, $wgOut;
 633
 634                 $limit = 100;
 635
 636                 $dbr = wfGetDB( DB_SLAVE );
 637
 638                 $res = $dbr->select(
 639                         array( 'imagelinks', 'page' ),
 640                         array( 'page_namespace', 'page_title' ),
 641                         array( 'il_to' => $this->mTitle->getDBkey(), 'il_from = page_id' ),
 642                         __METHOD__,
 643                         array( 'LIMIT' => $limit + 1)
 644                 );
 645
 646                 if ( 0 == $dbr->numRows( $res ) ) {
 647                         $wgOut->addHTML( "<div id='mw-imagepage-nolinkstoimage'>\n" );
 648                         $wgOut->addWikiMsg( 'nolinkstoimage' );
 649                         $wgOut->addHTML( "</div>\n" );
 650                         return;
 651                 }
 652                 $wgOut->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 653                 $wgOut->addWikiMsg( 'linkstoimage' );
 654                 $wgOut->addHTML( "<ul class='mw-imagepage-linktoimage'>\n" );
 655
 656                 $sk = $wgUser->getSkin();
 657                 $count = 0;
 658                 while ( $s = $res->fetchObject() ) {
 659                         $count++;
 660                         if ( $count <= $limit ) {
 661                                 // We have not yet reached the extra one that tells us there is more to fetch
 662                                 $name = Title::makeTitle( $s->page_namespace, $s->page_title );
 663                                 $link = $sk->makeKnownLinkObj( $name, "" );
 664                                 $wgOut->addHTML( "<li>{$link}</li>\n" );
 665                         }
 666                 }
 667                 $wgOut->addHTML( "</ul></div>\n" );
 668                 $res->free();
 669
 670                 // Add a links to [[Special:Whatlinkshere]]
 671                 if ( $count > $limit )
 672                         $wgOut->addWikiMsg( 'morelinkstoimage', $this->mTitle->getPrefixedDBkey() );
 673         }
 674
 675         function imageRedirects()
 676         {
 677                 global $wgUser, $wgOut;
 678
 679                 $redirects = $this->getTitle()->getRedirectsHere( NS_IMAGE );
 680                 if ( count( $redirects ) == 0 ) return;
 681
 682                 $wgOut->addHTML( "<div id='mw-imagepage-section-redirectstofile'>\n" );
 683                 $wgOut->addWikiMsg( 'redirectstofile' );
 684                 $wgOut->addHTML( "<ul class='mw-imagepage-redirectstofile'>\n" );
 685
 686                 $sk = $wgUser->getSkin();
 687                 foreach ( $redirects as $title ) {
 688                         $link = $sk->makeKnownLinkObj( $title, "" );
 689                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 690                 }
 691                 $wgOut->addHTML( "</ul></div>\n" );
 692
 693         }
 694
 695         function imageDupes() {
 696                 global $wgOut, $wgUser;
 697
 698                 $this->loadFile();
 699
 700                 $dupes = $this->getDuplicates();
 701                 if ( count( $dupes ) == 0 ) return;
 702
 703                 $wgOut->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 704                 $wgOut->addWikiMsg( 'duplicatesoffile' );
 705                 $wgOut->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 706
 707                 $sk = $wgUser->getSkin();
 708                 foreach ( $dupes as $file ) {
 709                         if ( $file->isLocal() )
 710                                 $link = $sk->makeKnownLinkObj( $file->getTitle(), "" );
 711                         else
 712                                 $link = $sk->makeExternalLink( $file->getDescriptionUrl(),
 713                                         $file->getTitle()->getPrefixedText() );
 714                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 715                 }
 716                 $wgOut->addHTML( "</ul></div>\n" );
 717         }
 718
 719         /**
 720          * Delete the file, or an earlier version of it
 721          */
 722         public function delete() {
 723                 $this->loadFile();
 724                 if( !$this->img->exists() || !$this->img->isLocal() || $this->img->getRedirected() ) {
 725                         // Standard article deletion
 726                         Article::delete();
 727                         return;
 728                 }
 729                 $deleter = new FileDeleteForm( $this->img );
 730                 $deleter->execute();
 731         }
 732
 733         /**
 734          * Revert the file to an earlier version
 735          */
 736         public function revert() {
 737                 $this->loadFile();
 738                 $reverter = new FileRevertForm( $this->img );
 739                 $reverter->execute();
 740         }
 741
 742         /**
 743          * Override handling of action=purge
 744          */
 745         function doPurge() {
 746                 $this->loadFile();
 747                 if( $this->img->exists() ) {
 748                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 749                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 750                         $update->doUpdate();
 751                         $this->img->upgradeRow();
 752                         $this->img->purgeCache();
 753                 } else {
 754                         wfDebug( "ImagePage::doPurge no image\n" );
 755                 }
 756                 parent::doPurge();
 757         }
 758
 759         /**
 760          * Display an error with a wikitext description
 761          */
 762         function showError( $description ) {
 763                 global $wgOut;
 764                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 765                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 766                 $wgOut->setArticleRelated( false );
 767                 $wgOut->enableClientCache( false );
 768                 $wgOut->addWikiText( $description );
 769         }
 770
 771 }
 772
 773 /**
 774  * Builds the image revision log shown on image pages
 775  *
 776  * @ingroup Media
 777  */
 778 class ImageHistoryList {
 779
 780         protected $imagePage, $img, $skin, $title, $repo;
 781
 782         public function __construct( $imagePage ) {
 783                 global $wgUser;
 784                 $this->skin = $wgUser->getSkin();
 785                 $this->current = $imagePage->getFile();
 786                 $this->img = $imagePage->getDisplayedFile();
 787                 $this->title = $imagePage->getTitle();
 788                 $this->imagePage = $imagePage;
 789         }
 790
 791         function getImagePage() {
 792                 return $this->imagePage;
 793         }
 794
 795         function getSkin() {
 796                 return $this->skin;
 797         }
 798
 799         function getFile() {
 800                 return $this->img;
 801         }
 802
 803         public function beginImageHistoryList() {
 804                 global $wgOut, $wgUser;
 805                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 806                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 807                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 808                         . '<tr><td></td>'
 809                         . ( $this->current->isLocal() && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ? '<td></td>' : '' )
 810                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 811                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 812                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 813                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 814                         . "</tr>\n";
 815         }
 816
 817         public function endImageHistoryList() {
 818                 return "</table>\n";
 819         }
 820
 821         public function imageHistoryLine( $iscur, $file ) {
 822                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 823
 824                 $timestamp = wfTimestamp(TS_MW, $file->getTimestamp());
 825                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 826                 $user = $file->getUser('id');
 827                 $usertext = $file->getUser('text');
 828                 $size = $file->getSize();
 829                 $description = $file->getDescription();
 830                 $dims = $file->getDimensionsString();
 831                 $sha1 = $file->getSha1();
 832
 833                 $local = $this->current->isLocal();
 834                 $row = $css = $selected = '';
 835
 836                 // Deletion link
 837                 if( $local && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ) {
 838                         $row .= '<td>';
 839                         # Link to remove from history
 840                         if( $wgUser->isAllowed( 'delete' ) ) {
 841                                 $q = array();
 842                                 $q[] = 'action=delete';
 843                                 if( !$iscur )
 844                                         $q[] = 'oldimage=' . urlencode( $img );
 845                                 $row .= $this->skin->makeKnownLinkObj(
 846                                         $this->title,
 847                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 848                                         implode( '&', $q )
 849                                 );
 850                         }
 851                         # Link to hide content
 852                         if( $wgUser->isAllowed( 'deleterevision' ) ) {
 853                                 if( $wgUser->isAllowed('delete') ) {
 854                                         $row .= '<br/>';
 855                                 }
 856                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 857                                 // If file is top revision or locked from this user, don't link
 858                                 if( $iscur || !$file->userCan(File::DELETED_RESTRICTED) ) {
 859                                         $del = wfMsgHtml( 'rev-delundel' );
 860                                 } else {
 861                                         // If the file was hidden, link to sha-1
 862                                         list($ts,$name) = explode('!',$img,2);
 863                                         $del = $this->skin->makeKnownLinkObj( $revdel,  wfMsg( 'rev-delundel' ),
 864                                                 'target=' . urlencode( $wgTitle->getPrefixedText() ) .
 865                                                 '&oldimage=' . urlencode( $ts ) );
 866                                         // Bolden oversighted content
 867                                         if( $file->isDeleted(File::DELETED_RESTRICTED) )
 868                                                 $del = "<strong>$del</strong>";
 869                                 }
 870                                 $row .= "<tt style='white-space: nowrap;'><small>$del</small></tt>";
 871                         }
 872                         $row .= '</td>';
 873                 }
 874
 875                 // Reversion link/current indicator
 876                 $row .= '<td>';
 877                 if( $iscur ) {
 878                         $row .= wfMsgHtml( 'filehist-current' );
 879                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 880                         if( $file->isDeleted(File::DELETED_FILE) ) {
 881                                 $row .= wfMsgHtml('filehist-revert');
 882                         } else {
 883                                 $q = array();
 884                                 $q[] = 'action=revert';
 885                                 $q[] = 'oldimage=' . urlencode( $img );
 886                                 $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 887                                 $row .= $this->skin->makeKnownLinkObj( $this->title,
 888                                         wfMsgHtml( 'filehist-revert' ),
 889                                         implode( '&', $q ) );
 890                         }
 891                 }
 892                 $row .= '</td>';
 893
 894                 // Date/time and image link
 895                 if( $file->getTimestamp() === $this->img->getTimestamp() ) {
 896                         $selected = "class='filehistory-selected'";
 897                 }
 898                 $row .= "<td $selected style='white-space: nowrap;'>";
 899                 if( !$file->userCan(File::DELETED_FILE) ) {
 900                         # Don't link to unviewable files
 901                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 902                 } else if( $file->isDeleted(File::DELETED_FILE) ) {
 903                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 904                         # Make a link to review the image
 905                         $url = $this->skin->makeKnownLinkObj( $revdel, $wgLang->timeAndDate( $timestamp, true ),
 906                                 "target=".$wgTitle->getPrefixedText()."&file=$sha1.".$this->current->getExtension() );
 907                         $row .= '<span class="history-deleted">'.$url.'</span>';
 908                 } else {
 909                         $url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
 910                         $row .= Xml::element( 'a', array( 'href' => $url ), $wgLang->timeAndDate( $timestamp, true ) );
 911                 }
 912
 913                 $row .= "</td><td>";
 914
 915                 // Image dimensions
 916                 $row .= htmlspecialchars( $dims );
 917
 918                 // File size
 919                 $row .= " <span style='white-space: nowrap;'>(" . $this->skin->formatSize( $size ) . ')</span>';
 920
 921                 // Uploading user
 922                 $row .= '</td><td>';
 923                 if( $local ) {
 924                         // Hide deleted usernames
 925                         if( $file->isDeleted(File::DELETED_USER) ) {
 926                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 927                         } else {
 928                                 $row .= $this->skin->userLink( $user, $usertext ) . " <span style='white-space: nowrap;'>" .
 929                                         $this->skin->userToolLinks( $user, $usertext ) . "</span>";
 930                         }
 931                 } else {
 932                         $row .= htmlspecialchars( $usertext );
 933                 }
 934                 $row .= '</td><td>';
 935
 936                 // Don't show deleted descriptions
 937                 if ( $file->isDeleted(File::DELETED_COMMENT) ) {
 938                         $row .= '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 939                 } else {
 940                         $row .= $this->skin->commentBlock( $description, $this->title );
 941                 }
 942                 $row .= '</td>';
 943
 944                 wfRunHooks( 'ImagePageFileHistoryLine', array( $this, $file, &$row, &$rowClass ) );
 945                 $classAttr = $rowClass ? " class='$rowClass'" : "";
 946
 947                 return "<tr{$classAttr}>{$row}</tr>\n";
 948         }
 949 }