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