includes/ImagePage.php

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