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