includes/ImagePage.php

   1 <?php
   2
   3 if( !defined( 'MEDIAWIKI' ) )
   4         die( 1 );
   5
   6 /**
   7  * Special handling for image description pages
   8  *
   9  * @ingroup Media
  10  */
  11 class ImagePage extends Article {
  12
  13         /* private */ var $img;  // Image object
  14         /* private */ var $displayImg;
  15         /* private */ var $repo;
  16         /* private */ var $fileLoaded;
  17         var $mExtraDescription = false;
  18         var $dupes;
  19
  20         function __construct( $title ) {
  21                 parent::__construct( $title );
  22                 $this->dupes = null;
  23                 $this->repo = null;
  24         }
  25
  26         protected function loadFile() {
  27                 if ( $this->fileLoaded ) {
  28                         return true;
  29                 }
  30                 $this->fileLoaded = true;
  31
  32                 $this->displayImg = $this->img = false;
  33                 wfRunHooks( 'ImagePageFindFile', array( $this, &$this->img, &$this->displayImg ) );
  34                 if ( !$this->img ) {
  35                         $this->img = wfFindFile( $this->mTitle );
  36                         if ( !$this->img ) {
  37                                 $this->img = wfLocalFile( $this->mTitle );
  38                         }
  39                 }
  40                 if ( !$this->displayImg ) {
  41                         $this->displayImg = $this->img;
  42                 }
  43                 $this->repo = $this->img->getRepo();
  44         }
  45
  46         /**
  47          * Handler for action=render
  48          * Include body text only; none of the image extras
  49          */
  50         function render() {
  51                 global $wgOut;
  52                 $wgOut->setArticleBodyOnly( true );
  53                 parent::view();
  54         }
  55
  56         function view() {
  57                 global $wgOut, $wgShowEXIF, $wgRequest, $wgUser;
  58                 $this->loadFile();
  59
  60                 if ( $this->mTitle->getNamespace() == NS_IMAGE && $this->img->getRedirected() ) {
  61                         if ( $this->mTitle->getDBkey() == $this->img->getName() ) {
  62                                 // mTitle is the same as the redirect target so ask Article
  63                                 // to perform the redirect for us.
  64                                 return Article::view();
  65                         } else {
  66                                 // mTitle is not the same as the redirect target so it is
  67                                 // probably the redirect page itself. Fake the redirect symbol
  68                                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
  69                                 $wgOut->addHTML( $this->viewRedirect( Title::makeTitle( NS_IMAGE, $this->img->getName() ),
  70                                         /* $appendSubtitle */ true, /* $forceKnown */ true ) );
  71                                 $this->viewUpdates();
  72                                 return;
  73                         }
  74                 }
  75
  76                 $diff = $wgRequest->getVal( 'diff' );
  77                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  78
  79                 if ( $this->mTitle->getNamespace() != NS_IMAGE || ( isset( $diff ) && $diffOnly ) )
  80                         return Article::view();
  81
  82                 if ( $wgShowEXIF && $this->displayImg->exists() ) {
  83                         // FIXME: bad interface, see note on MediaHandler::formatMetadata().
  84                         $formattedMetadata = $this->displayImg->formatMetadata();
  85                         $showmeta = $formattedMetadata !== false;
  86                 } else {
  87                         $showmeta = false;
  88                 }
  89
  90                 if ( $this->displayImg->exists() )
  91                         $wgOut->addHTML( $this->showTOC($showmeta) );
  92
  93                 $this->openShowImage();
  94
  95                 # No need to display noarticletext, we use our own message, output in openShowImage()
  96                 if ( $this->getID() ) {
  97                         Article::view();
  98                 } else {
  99                         # Just need to set the right headers
 100                         $wgOut->setArticleFlag( true );
 101                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 102                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
 103                         $this->viewUpdates();
 104                 }
 105
 106                 # Show shared description, if needed
 107                 if ( $this->mExtraDescription ) {
 108                         $fol = wfMsgNoTrans( 'shareddescriptionfollows' );
 109                         if( $fol != '-' && !wfEmptyMsg( 'shareddescriptionfollows', $fol ) ) {
 110                                 $wgOut->addWikiText( $fol );
 111                         }
 112                         $wgOut->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . '</div>' );
 113                 } else {
 114                         $this->checkSharedConflict();
 115                 }
 116
 117                 $this->closeShowImage();
 118                 $this->imageHistory();
 119                 // TODO: Cleanup the following
 120
 121                 $wgOut->addHTML( Xml::element( 'h2',
 122                         array( 'id' => 'filelinks' ),
 123                         wfMsg( 'imagelinks' ) ) . "\n" );
 124                 $this->imageDupes();
 125                 // TODO: We may want to find local images redirecting to a foreign
 126                 // file: "The following local files redirect to this file"
 127                 if ( $this->img->isLocal() ) {
 128                         $this->imageRedirects();
 129                 }
 130                 $this->imageLinks();
 131
 132                 if ( $showmeta ) {
 133                         global $wgStylePath, $wgStyleVersion;
 134                         $expand = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-expand' ) ) );
 135                         $collapse = htmlspecialchars( wfEscapeJsString( wfMsg( 'metadata-collapse' ) ) );
 136                         $wgOut->addHTML( Xml::element( 'h2', array( 'id' => 'metadata' ), wfMsg( 'metadata' ) ). "\n" );
 137                         $wgOut->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 138                         $wgOut->addScriptFile( 'metadata.js' );
 139                         $wgOut->addHTML(
 140                                 "<script type=\"text/javascript\">attachMetadataToggle('mw_metadata', '$expand', '$collapse');</script>\n" );
 141                 }
 142         }
 143
 144         public function getRedirectTarget() {
 145                 $this->loadFile();
 146                 if ( $this->img->isLocal() ) {
 147                         return parent::getRedirectTarget();
 148                 }
 149                 // Foreign image page
 150                 $from = $this->img->getRedirected();
 151                 $to = $this->img->getName();
 152                 if ( $from == $to ) {
 153                         return null;
 154                 }
 155                 return $this->mRedirectTarget = Title::makeTitle( NS_IMAGE, $to );
 156         }
 157         public function followRedirect() {
 158                 $this->loadFile();
 159                 if ( $this->img->isLocal() ) {
 160                         return parent::followRedirect();
 161                 }
 162                 $from = $this->img->getRedirected();
 163                 $to = $this->img->getName();
 164                 if ( $from == $to ) {
 165                         return false;
 166                 }
 167                 return Title::makeTitle( NS_IMAGE, $to );
 168         }
 169         public function isRedirect( $text = false ) {
 170                 $this->loadFile();
 171                 if ( $this->img->isLocal() )
 172                         return parent::isRedirect( $text );
 173
 174                 return (bool)$this->img->getRedirected();
 175         }
 176
 177         public function isLocal() {
 178                 $this->loadFile();
 179                 return $this->img->isLocal();
 180         }
 181
 182         public function getFile() {
 183                 $this->loadFile();
 184                 return $this->img;
 185         }
 186
 187         public function getDisplayedFile() {
 188                 $this->loadFile();
 189                 return $this->displayImg;
 190         }
 191
 192         public function getDuplicates() {
 193                 $this->loadFile();
 194                 if ( !is_null($this->dupes) ) {
 195                         return $this->dupes;
 196                 }
 197                 if ( !( $hash = $this->img->getSha1() ) ) {
 198                         return $this->dupes = array();
 199                 }
 200                 $dupes = RepoGroup::singleton()->findBySha1( $hash );
 201                 // Remove duplicates with self and non matching file sizes
 202                 $self = $this->img->getRepoName().':'.$this->img->getName();
 203                 $size = $this->img->getSize();
 204                 foreach ( $dupes as $index => $file ) {
 205                         $key = $file->getRepoName().':'.$file->getName();
 206                         if ( $key == $self )
 207                                 unset( $dupes[$index] );
 208                         if ( $file->getSize() != $size )
 209                                 unset( $dupes[$index] );
 210                 }
 211                 return $this->dupes = $dupes;
 212
 213         }
 214
 215
 216         /**
 217          * Create the TOC
 218          *
 219          * @access private
 220          *
 221          * @param bool $metadata Whether or not to show the metadata link
 222          * @return string
 223          */
 224         function showTOC( $metadata ) {
 225                 global $wgLang;
 226                 $r = '<ul id="filetoc">
 227                         <li><a href="#file">' . $wgLang->getNsText( NS_IMAGE ) . '</a></li>
 228                         <li><a href="#filehistory">' . wfMsgHtml( 'filehist' ) . '</a></li>
 229                         <li><a href="#filelinks">' . wfMsgHtml( 'imagelinks' ) . '</a></li>' .
 230                         ($metadata ? ' <li><a href="#metadata">' . wfMsgHtml( 'metadata' ) . '</a></li>' : '') . '
 231                 </ul>';
 232                 return $r;
 233         }
 234
 235         /**
 236          * Make a table with metadata to be shown in the output page.
 237          *
 238          * FIXME: bad interface, see note on MediaHandler::formatMetadata().
 239          *
 240          * @access private
 241          *
 242          * @param array $exif The array containing the EXIF data
 243          * @return string
 244          */
 245         function makeMetadataTable( $metadata ) {
 246                 $r = wfMsg( 'metadata-help' ) . "\n\n";
 247                 $r .= "{| id=mw_metadata class=mw_metadata\n";
 248                 foreach ( $metadata as $type => $stuff ) {
 249                         foreach ( $stuff as $v ) {
 250                                 $class = Sanitizer::escapeId( $v['id'] );
 251                                 if( $type == 'collapsed' ) {
 252                                         $class .= ' collapsable';
 253                                 }
 254                                 $r .= "|- class=\"$class\"\n";
 255                                 $r .= "!| {$v['name']}\n";
 256                                 $r .= "|| {$v['value']}\n";
 257                         }
 258                 }
 259                 $r .= '|}';
 260                 return $r;
 261         }
 262
 263         /**
 264          * Overloading Article's getContent method.
 265          *
 266          * Omit noarticletext if sharedupload; text will be fetched from the
 267          * shared upload server if possible.
 268          */
 269         function getContent() {
 270                 $this->loadFile();
 271                 if( $this->img && !$this->img->isLocal() && 0 == $this->getID() ) {
 272                         return '';
 273                 }
 274                 return Article::getContent();
 275         }
 276
 277         function openShowImage() {
 278                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgLang, $wgContLang;
 279
 280                 $this->loadFile();
 281
 282                 $full_url  = $this->displayImg->getURL();
 283                 $linkAttribs = false;
 284                 $sizeSel = intval( $wgUser->getOption( 'imagesize') );
 285                 if( !isset( $wgImageLimits[$sizeSel] ) ) {
 286                         $sizeSel = User::getDefaultOption( 'imagesize' );
 287
 288                         // The user offset might still be incorrect, specially if
 289                         // $wgImageLimits got changed (see bug #8858).
 290                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
 291                                 // Default to the first offset in $wgImageLimits
 292                                 $sizeSel = 0;
 293                         }
 294                 }
 295                 $max = $wgImageLimits[$sizeSel];
 296                 $maxWidth = $max[0];
 297                 $maxHeight = $max[1];
 298                 $sk = $wgUser->getSkin();
 299                 $dirmark = $wgContLang->getDirMark();
 300
 301                 if ( $this->displayImg->exists() ) {
 302                         # image
 303                         $page = $wgRequest->getIntOrNull( 'page' );
 304                         if ( is_null( $page ) ) {
 305                                 $params = array();
 306                                 $page = 1;
 307                         } else {
 308                                 $params = array( 'page' => $page );
 309                         }
 310                         $width_orig = $this->displayImg->getWidth();
 311                         $width = $width_orig;
 312                         $height_orig = $this->displayImg->getHeight();
 313                         $height = $height_orig;
 314                         $mime = $this->displayImg->getMimeType();
 315                         $showLink = false;
 316                         $linkAttribs = array( 'href' => $full_url );
 317                         $longDesc = $this->displayImg->getLongDesc();
 318
 319                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this , &$wgOut ) )       ;
 320
 321                         if ( $this->displayImg->allowInlineDisplay() ) {
 322                                 # image
 323
 324                                 # "Download high res version" link below the image
 325                                 #$msgsize = wfMsgHtml('file-info-size', $width_orig, $height_orig, $sk->formatSize( $this->displayImg->getSize() ), $mime );
 326                                 # We'll show a thumbnail of this image
 327                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 328                                         # Calculate the thumbnail size.
 329                                         # First case, the limiting factor is the width, not the height.
 330                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 331                                                 $height = round( $height * $maxWidth / $width);
 332                                                 $width = $maxWidth;
 333                                                 # Note that $height <= $maxHeight now.
 334                                         } else {
 335                                                 $newwidth = floor( $width * $maxHeight / $height);
 336                                                 $height = round( $height * $newwidth / $width );
 337                                                 $width = $newwidth;
 338                                                 # Note that $height <= $maxHeight now, but might not be identical
 339                                                 # because of rounding.
 340                                         }
 341                                         $msgbig  = wfMsgHtml( 'show-big-image' );
 342                                         $msgsmall = wfMsgExt( 'show-big-image-thumb', 'parseinline',
 343                                                 $wgLang->formatNum( $width ),
 344                                                 $wgLang->formatNum( $height )
 345                                         );
 346                                 } else {
 347                                         # Image is small enough to show full size on image page
 348                                         $msgbig = htmlspecialchars( $this->displayImg->getName() );
 349                                         $msgsmall = wfMsgExt( 'file-nohires', array( 'parseinline' ) );
 350                                 }
 351
 352                                 $params['width'] = $width;
 353                                 $thumbnail = $this->displayImg->transform( $params );
 354
 355                                 $anchorclose = "<br />";
 356                                 if( $this->displayImg->mustRender() ) {
 357                                         $showLink = true;
 358                                 } else {
 359                                         $anchorclose .=
 360                                                 $msgsmall .
 361                                                 '<br />' . Xml::tags( 'a', $linkAttribs,  $msgbig ) . "$dirmark " . $longDesc;
 362                                 }
 363
 364                                 if ( $this->displayImg->isMultipage() ) {
 365                                         $wgOut->addHTML( '<table class="multipageimage"><tr><td>' );
 366                                 }
 367
 368                                 if ( $thumbnail ) {
 369                                         $options = array(
 370                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 371                                                 'file-link' => true,
 372                                         );
 373                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 374                                                 $thumbnail->toHtml( $options ) .
 375                                                 $anchorclose . '</div>' );
 376                                 }
 377
 378                                 if ( $this->displayImg->isMultipage() ) {
 379                                         $count = $this->displayImg->pageCount();
 380
 381                                         if ( $page > 1 ) {
 382                                                 $label = $wgOut->parse( wfMsg( 'imgmultipageprev' ), false );
 383                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page-1) );
 384                                                 $thumb1 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 385                                                         array( 'page' => $page - 1 ) );
 386                                         } else {
 387                                                 $thumb1 = '';
 388                                         }
 389
 390                                         if ( $page < $count ) {
 391                                                 $label = wfMsg( 'imgmultipagenext' );
 392                                                 $link = $sk->makeKnownLinkObj( $this->mTitle, $label, 'page='. ($page+1) );
 393                                                 $thumb2 = $sk->makeThumbLinkObj( $this->mTitle, $this->displayImg, $link, $label, 'none',
 394                                                         array( 'page' => $page + 1 ) );
 395                                         } else {
 396                                                 $thumb2 = '';
 397                                         }
 398
 399                                         global $wgScript;
 400
 401                                         $formParams = array(
 402                                                 'name' => 'pageselector',
 403                                                 'action' => $wgScript,
 404                                                 'onchange' => 'document.pageselector.submit();',
 405                                         );
 406
 407                                         $option = array();
 408                                         for ( $i=1; $i <= $count; $i++ ) {
 409                                                 $options[] = Xml::option( $wgLang->formatNum($i), $i, $i == $page );
 410                                         }
 411                                         $select = Xml::tags( 'select',
 412                                                 array( 'id' => 'pageselector', 'name' => 'page' ),
 413                                                 implode( "\n", $options ) );
 414
 415                                         $wgOut->addHTML(
 416                                                 '</td><td><div class="multipageimagenavbox">' .
 417                                                 Xml::openElement( 'form', $formParams ) .
 418                                                 Xml::hidden( 'title', $this->getTitle()->getPrefixedDbKey() ) .
 419                                                 wfMsgExt( 'imgmultigoto', array( 'parseinline', 'replaceafter' ), $select ) .
 420                                                 Xml::submitButton( wfMsg( 'imgmultigo' ) ) .
 421                                                 Xml::closeElement( 'form' ) .
 422                                                 "<hr />$thumb1\n$thumb2<br clear=\"all\" /></div></td></tr></table>"
 423                                         );
 424                                 }
 425                         } else {
 426                                 #if direct link is allowed but it's not a renderable image, show an icon.
 427                                 if ( $this->displayImg->isSafeFile() ) {
 428                                         $icon= $this->displayImg->iconThumb();
 429
 430                                         $wgOut->addHTML( '<div class="fullImageLink" id="file">' .
 431                                         $icon->toHtml( array( 'desc-link' => true ) ) .
 432                                         '</div>' );
 433                                 }
 434
 435                                 $showLink = true;
 436                         }
 437
 438
 439                         if ($showLink) {
 440                                 $filename = wfEscapeWikiText( $this->displayImg->getName() );
 441
 442                                 if ( !$this->displayImg->isSafeFile() ) {
 443                                         $warning = wfMsgNoTrans( 'mediawarning' );
 444                                         $wgOut->addWikiText( <<<EOT
 445 <div class="fullMedia">
 446 <span class="dangerousLink">[[Media:$filename|$filename]]</span>$dirmark
 447 <span class="fileInfo"> $longDesc</span>
 448 </div>
 449
 450 <div class="mediaWarning">$warning</div>
 451 EOT
 452                                                 );
 453                                 } else {
 454                                         $wgOut->addWikiText( <<<EOT
 455 <div class="fullMedia">
 456 [[Media:$filename|$filename]]$dirmark <span class="fileInfo"> $longDesc</span>
 457 </div>
 458 EOT
 459                                                 );
 460                                 }
 461                         }
 462
 463                         if( !$this->displayImg->isLocal() ) {
 464                                 $this->printSharedImageText();
 465                         }
 466                 } else {
 467                         # Image does not exist
 468
 469                         $title = SpecialPage::getTitleFor( 'Upload' );
 470                         $link = $sk->makeKnownLinkObj($title, wfMsgHtml('noimage-linktext'),
 471                                 'wpDestFile=' . urlencode( $this->displayImg->getName() ) );
 472                         $wgOut->addHTML( wfMsgWikiHtml( 'noimage', $link ) );
 473                 }
 474         }
 475
 476         /**
 477          * Show a notice that the file is from a shared repository
 478          */
 479         function printSharedImageText() {
 480                 global $wgOut, $wgUser;
 481
 482                 $this->loadFile();
 483
 484                 $descUrl = $this->img->getDescriptionUrl();
 485                 $descText = $this->img->getDescriptionText();
 486                 $s = "<div class='sharedUploadNotice'>" . wfMsgWikiHtml( 'sharedupload' );
 487                 if ( $descUrl ) {
 488                         $sk = $wgUser->getSkin();
 489                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadwiki-linktext' ) );
 490                         $msg = ( $descText ) ? 'shareduploadwiki-desc' : 'shareduploadwiki';
 491                         $msg = wfMsgExt( $msg, array( 'parseinline', 'replaceafter' ), $link );
 492                         if ( $msg != '-' ) {
 493                                 # Show message only if not voided by local sysops
 494                                 $s .= $msg;
 495                         }
 496                 }
 497                 $s .= "</div>";
 498                 $wgOut->addHTML( $s );
 499
 500                 if ( $descText ) {
 501                         $this->mExtraDescription = $descText;
 502                 }
 503         }
 504
 505         /*
 506          * Check for files with the same name on the foreign repos.
 507          */
 508         function checkSharedConflict() {
 509                 global $wgOut, $wgUser;
 510
 511                 $repoGroup = RepoGroup::singleton();
 512                 if( !$repoGroup->hasForeignRepos() ) {
 513                         return;
 514                 }
 515
 516                 $this->loadFile();
 517                 if( !$this->img->isLocal() ) {
 518                         return;
 519                 }
 520
 521                 $this->dupFile = null;
 522                 $repoGroup->forEachForeignRepo( array( $this, 'checkSharedConflictCallback' ) );
 523
 524                 if( !$this->dupFile )
 525                         return;
 526                 $dupfile = $this->dupFile;
 527                 $same = (
 528                         ($this->img->getSha1() == $dupfile->getSha1()) &&
 529                         ($this->img->getSize() == $dupfile->getSize())
 530                 );
 531
 532                 $sk = $wgUser->getSkin();
 533                 $descUrl = $dupfile->getDescriptionUrl();
 534                 if( $same ) {
 535                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadduplicate-linktext' ) );
 536                         $wgOut->addHTML( '<div id="shared-image-dup">' . wfMsgWikiHtml( 'shareduploadduplicate', $link ) . '</div>' );
 537                 } else {
 538                         $link = $sk->makeExternalLink( $descUrl, wfMsg( 'shareduploadconflict-linktext' ) );
 539                         $wgOut->addHTML( '<div id="shared-image-conflict">' . wfMsgWikiHtml( 'shareduploadconflict', $link ) . '</div>' );
 540                 }
 541         }
 542
 543         function checkSharedConflictCallback( $repo ) {
 544                 $this->loadFile();
 545                 $dupfile = $repo->newFile( $this->img->getTitle() );
 546                 if( $dupfile && $dupfile->exists() ) {
 547                         $this->dupFile = $dupfile;
 548                         return $dupfile->exists();
 549                 }
 550                 return false;
 551         }
 552
 553         function getUploadUrl() {
 554                 $this->loadFile();
 555                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 556                 return $uploadTitle->getFullUrl( 'wpDestFile=' . urlencode( $this->img->getName() ) );
 557         }
 558
 559         /**
 560          * Print out the various links at the bottom of the image page, e.g. reupload,
 561          * external editing (and instructions link) etc.
 562          */
 563         function uploadLinksBox() {
 564                 global $wgUser, $wgOut;
 565
 566                 $this->loadFile();
 567                 if( !$this->img->isLocal() )
 568                         return;
 569
 570                 $sk = $wgUser->getSkin();
 571
 572                 $wgOut->addHtml( '<br /><ul>' );
 573
 574                 # "Upload a new version of this file" link
 575                 if( UploadForm::userCanReUpload($wgUser,$this->img->name) ) {
 576                         $ulink = $sk->makeExternalLink( $this->getUploadUrl(), wfMsg( 'uploadnewversion-linktext' ) );
 577                         $wgOut->addHtml( "<li><div class='plainlinks'>{$ulink}</div></li>" );
 578                 }
 579
 580                 # Link to Special:FileDuplicateSearch
 581                 $dupeLink = $sk->makeKnownLinkObj( SpecialPage::getTitleFor( 'FileDuplicateSearch', $this->mTitle->getDBkey() ), wfMsgHtml( 'imagepage-searchdupe' ) );
 582                 $wgOut->addHtml( "<li>{$dupeLink}</li>" );
 583
 584                 # External editing link
 585                 $elink = $sk->makeKnownLinkObj( $this->mTitle, wfMsgHtml( 'edit-externally' ), 'action=edit&externaledit=true&mode=file' );
 586                 $wgOut->addHtml( '<li>' . $elink . '<div>' . wfMsgWikiHtml( 'edit-externally-help' ) . '</div></li>' );
 587
 588                 $wgOut->addHtml( '</ul>' );
 589         }
 590
 591         function closeShowImage()
 592         {
 593                 # For overloading
 594
 595         }
 596
 597         /**
 598          * If the page we've just displayed is in the "Image" namespace,
 599          * we follow it with an upload history of the image and its usage.
 600          */
 601         function imageHistory() {
 602                 global $wgOut, $wgUseExternalEditor;
 603
 604                 $this->loadFile();
 605                 if ( $this->img->exists() ) {
 606                         $list = new ImageHistoryList( $this );
 607                         $file = $this->img;
 608                         $s = $list->beginImageHistoryList();
 609                         $s .= $list->imageHistoryLine( true, $file );
 610                         // old image versions
 611                         $hist = $this->img->getHistory();
 612                         foreach( $hist as $file ) {
 613                                 $s .= $list->imageHistoryLine( false, $file );
 614                         }
 615                         $s .= $list->endImageHistoryList();
 616                 } else { $s=''; }
 617                 $wgOut->addHTML( $s );
 618
 619                 $this->img->resetHistory(); // free db resources
 620
 621                 # Exist check because we don't want to show this on pages where an image
 622                 # doesn't exist along with the noimage message, that would suck. -ævar
 623                 if( $wgUseExternalEditor && $this->img->exists() ) {
 624                         $this->uploadLinksBox();
 625                 }
 626
 627         }
 628
 629         function imageLinks() {
 630                 global $wgUser, $wgOut, $wgLang;
 631
 632                 $limit = 100;
 633
 634                 $dbr = wfGetDB( DB_SLAVE );
 635
 636                 $res = $dbr->select(
 637                         array( 'imagelinks', 'page' ),
 638                         array( 'page_namespace', 'page_title' ),
 639                         array( 'il_to' => $this->mTitle->getDBkey(), 'il_from = page_id' ),
 640                         __METHOD__,
 641                         array( 'LIMIT' => $limit + 1)
 642                 );
 643                 $count = $dbr->numRows( $res );
 644                 if ( $count == 0 ) {
 645                         $wgOut->addHTML( "<div id='mw-imagepage-nolinkstoimage'>\n" );
 646                         $wgOut->addWikiMsg( 'nolinkstoimage' );
 647                         $wgOut->addHTML( "</div>\n" );
 648                         return;
 649                 }
 650
 651                 $wgOut->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 652                 if ( $count <= $limit - 1 ) {
 653                         $wgOut->addWikiMsg( 'linkstoimage', $count );
 654                 } else {
 655                         // More links than the limit. Add a link to [[Special:Whatlinkshere]]
 656                         $wgOut->addWikiMsg( 'linkstoimage-more',
 657                                 $wgLang->formatNum( $limit ),
 658                                 $this->mTitle->getPrefixedDBkey()
 659                         );
 660                 }
 661
 662                 $wgOut->addHTML( "<ul class='mw-imagepage-linkstoimage'>\n" );
 663                 $sk = $wgUser->getSkin();
 664                 $count = 0;
 665                 while ( $s = $res->fetchObject() ) {
 666                         $count++;
 667                         if ( $count <= $limit ) {
 668                                 // We have not yet reached the extra one that tells us there is more to fetch
 669                                 $name = Title::makeTitle( $s->page_namespace, $s->page_title );
 670                                 $link = $sk->makeKnownLinkObj( $name, "" );
 671                                 $wgOut->addHTML( "<li>{$link}</li>\n" );
 672                         }
 673                 }
 674                 $wgOut->addHTML( "</ul></div>\n" );
 675                 $res->free();
 676
 677                 // Add a links to [[Special:Whatlinkshere]]
 678                 if ( $count > $limit )
 679                         $wgOut->addWikiMsg( 'morelinkstoimage', $this->mTitle->getPrefixedDBkey() );
 680         }
 681
 682         function imageRedirects() {
 683                 global $wgUser, $wgOut, $wgLang;
 684
 685                 $redirects = $this->getTitle()->getRedirectsHere( NS_IMAGE );
 686                 if ( count( $redirects ) == 0 ) return;
 687
 688                 $wgOut->addHTML( "<div id='mw-imagepage-section-redirectstofile'>\n" );
 689                 $wgOut->addWikiMsg( 'redirectstofile',
 690                         $wgLang->formatNum( count( $redirects ) )
 691                 );
 692                 $wgOut->addHTML( "<ul class='mw-imagepage-redirectstofile'>\n" );
 693
 694                 $sk = $wgUser->getSkin();
 695                 foreach ( $redirects as $title ) {
 696                         $link = $sk->makeKnownLinkObj( $title, "", "redirect=no" );
 697                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 698                 }
 699                 $wgOut->addHTML( "</ul></div>\n" );
 700
 701         }
 702
 703         function imageDupes() {
 704                 global $wgOut, $wgUser, $wgLang;
 705
 706                 $this->loadFile();
 707
 708                 $dupes = $this->getDuplicates();
 709                 if ( count( $dupes ) == 0 ) return;
 710
 711                 $wgOut->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 712                 $wgOut->addWikiMsg( 'duplicatesoffile',
 713                         $wgLang->formatNum( count( $dupes ) )
 714                 );
 715                 $wgOut->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 716
 717                 $sk = $wgUser->getSkin();
 718                 foreach ( $dupes as $file ) {
 719                         if ( $file->isLocal() )
 720                                 $link = $sk->makeKnownLinkObj( $file->getTitle(), "" );
 721                         else {
 722                                 $link = $sk->makeExternalLink( $file->getDescriptionUrl(),
 723                                         $file->getTitle()->getPrefixedText() );
 724                         }
 725                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 726                 }
 727                 $wgOut->addHTML( "</ul></div>\n" );
 728         }
 729
 730         /**
 731          * Delete the file, or an earlier version of it
 732          */
 733         public function delete() {
 734                 $this->loadFile();
 735                 if( !$this->img->exists() || !$this->img->isLocal() || $this->img->getRedirected() ) {
 736                         // Standard article deletion
 737                         Article::delete();
 738                         return;
 739                 }
 740                 $deleter = new FileDeleteForm( $this->img );
 741                 $deleter->execute();
 742         }
 743
 744         /**
 745          * Revert the file to an earlier version
 746          */
 747         public function revert() {
 748                 $this->loadFile();
 749                 $reverter = new FileRevertForm( $this->img );
 750                 $reverter->execute();
 751         }
 752
 753         /**
 754          * Override handling of action=purge
 755          */
 756         function doPurge() {
 757                 $this->loadFile();
 758                 if( $this->img->exists() ) {
 759                         wfDebug( "ImagePage::doPurge purging " . $this->img->getName() . "\n" );
 760                         $update = new HTMLCacheUpdate( $this->mTitle, 'imagelinks' );
 761                         $update->doUpdate();
 762                         $this->img->upgradeRow();
 763                         $this->img->purgeCache();
 764                 } else {
 765                         wfDebug( "ImagePage::doPurge no image\n" );
 766                 }
 767                 parent::doPurge();
 768         }
 769
 770         /**
 771          * Display an error with a wikitext description
 772          */
 773         function showError( $description ) {
 774                 global $wgOut;
 775                 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
 776                 $wgOut->setRobotPolicy( "noindex,nofollow" );
 777                 $wgOut->setArticleRelated( false );
 778                 $wgOut->enableClientCache( false );
 779                 $wgOut->addWikiText( $description );
 780         }
 781
 782 }
 783
 784 /**
 785  * Builds the image revision log shown on image pages
 786  *
 787  * @ingroup Media
 788  */
 789 class ImageHistoryList {
 790
 791         protected $imagePage, $img, $skin, $title, $repo;
 792
 793         public function __construct( $imagePage ) {
 794                 global $wgUser;
 795                 $this->skin = $wgUser->getSkin();
 796                 $this->current = $imagePage->getFile();
 797                 $this->img = $imagePage->getDisplayedFile();
 798                 $this->title = $imagePage->getTitle();
 799                 $this->imagePage = $imagePage;
 800         }
 801
 802         function getImagePage() {
 803                 return $this->imagePage;
 804         }
 805
 806         function getSkin() {
 807                 return $this->skin;
 808         }
 809
 810         function getFile() {
 811                 return $this->img;
 812         }
 813
 814         public function beginImageHistoryList() {
 815                 global $wgOut, $wgUser;
 816                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), wfMsg( 'filehist' ) )
 817                         . $wgOut->parse( wfMsgNoTrans( 'filehist-help' ) )
 818                         . Xml::openElement( 'table', array( 'class' => 'filehistory' ) ) . "\n"
 819                         . '<tr><td></td>'
 820                         . ( $this->current->isLocal() && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ? '<td></td>' : '' )
 821                         . '<th>' . wfMsgHtml( 'filehist-datetime' ) . '</th>'
 822                         . '<th>' . wfMsgHtml( 'filehist-thumb' ) . '</th>'
 823                         . '<th>' . wfMsgHtml( 'filehist-dimensions' ) . '</th>'
 824                         . '<th>' . wfMsgHtml( 'filehist-user' ) . '</th>'
 825                         . '<th>' . wfMsgHtml( 'filehist-comment' ) . '</th>'
 826                         . "</tr>\n";
 827         }
 828
 829         public function endImageHistoryList() {
 830                 return "</table>\n";
 831         }
 832
 833         public function imageHistoryLine( $iscur, $file ) {
 834                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 835
 836                 $timestamp = wfTimestamp(TS_MW, $file->getTimestamp());
 837                 $img = $iscur ? $file->getName() : $file->getArchiveName();
 838                 $user = $file->getUser('id');
 839                 $usertext = $file->getUser('text');
 840                 $size = $file->getSize();
 841                 $description = $file->getDescription();
 842                 $dims = $file->getDimensionsString();
 843                 $sha1 = $file->getSha1();
 844
 845                 $local = $this->current->isLocal();
 846                 $row = $css = $selected = '';
 847
 848                 // Deletion link
 849                 if( $local && ($wgUser->isAllowed('delete') || $wgUser->isAllowed('deleterevision') ) ) {
 850                         $row .= '<td>';
 851                         # Link to remove from history
 852                         if( $wgUser->isAllowed( 'delete' ) ) {
 853                                 $q = array();
 854                                 $q[] = 'action=delete';
 855                                 if( !$iscur )
 856                                         $q[] = 'oldimage=' . urlencode( $img );
 857                                 $row .= $this->skin->makeKnownLinkObj(
 858                                         $this->title,
 859                                         wfMsgHtml( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' ),
 860                                         implode( '&', $q )
 861                                 );
 862                         }
 863                         # Link to hide content
 864                         if( $wgUser->isAllowed( 'deleterevision' ) ) {
 865                                 if( $wgUser->isAllowed('delete') ) {
 866                                         $row .= '<br/>';
 867                                 }
 868                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 869                                 // If file is top revision or locked from this user, don't link
 870                                 if( $iscur || !$file->userCan(File::DELETED_RESTRICTED) ) {
 871                                         $del = wfMsgHtml( 'rev-delundel' );
 872                                 } else {
 873                                         // If the file was hidden, link to sha-1
 874                                         list($ts,$name) = explode('!',$img,2);
 875                                         $del = $this->skin->makeKnownLinkObj( $revdel,  wfMsg( 'rev-delundel' ),
 876                                                 'target=' . urlencode( $wgTitle->getPrefixedText() ) .
 877                                                 '&oldimage=' . urlencode( $ts ) );
 878                                         // Bolden oversighted content
 879                                         if( $file->isDeleted(File::DELETED_RESTRICTED) )
 880                                                 $del = "<strong>$del</strong>";
 881                                 }
 882                                 $row .= "<tt style='white-space: nowrap;'><small>$del</small></tt>";
 883                         }
 884                         $row .= '</td>';
 885                 }
 886
 887                 // Reversion link/current indicator
 888                 $row .= '<td>';
 889                 if( $iscur ) {
 890                         $row .= wfMsgHtml( 'filehist-current' );
 891                 } elseif( $local && $wgUser->isLoggedIn() && $this->title->userCan( 'edit' ) ) {
 892                         if( $file->isDeleted(File::DELETED_FILE) ) {
 893                                 $row .= wfMsgHtml('filehist-revert');
 894                         } else {
 895                                 $q = array();
 896                                 $q[] = 'action=revert';
 897                                 $q[] = 'oldimage=' . urlencode( $img );
 898                                 $q[] = 'wpEditToken=' . urlencode( $wgUser->editToken( $img ) );
 899                                 $row .= $this->skin->makeKnownLinkObj( $this->title,
 900                                         wfMsgHtml( 'filehist-revert' ),
 901                                         implode( '&', $q ) );
 902                         }
 903                 }
 904                 $row .= '</td>';
 905
 906                 // Date/time and image link
 907                 if( $file->getTimestamp() === $this->img->getTimestamp() ) {
 908                         $selected = "class='filehistory-selected'";
 909                 }
 910                 $row .= "<td $selected style='white-space: nowrap;'>";
 911                 if( !$file->userCan(File::DELETED_FILE) ) {
 912                         # Don't link to unviewable files
 913                         $row .= '<span class="history-deleted">' . $wgLang->timeAndDate( $timestamp, true ) . '</span>';
 914                 } else if( $file->isDeleted(File::DELETED_FILE) ) {
 915                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 916                         # Make a link to review the image
 917                         $url = $this->skin->makeKnownLinkObj( $revdel, $wgLang->timeAndDate( $timestamp, true ),
 918                                 "target=".$wgTitle->getPrefixedText()."&file=$sha1.".$this->current->getExtension() );
 919                         $row .= '<span class="history-deleted">'.$url.'</span>';
 920                 } else {
 921                         $url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
 922                         $row .= Xml::element( 'a', array( 'href' => $url ), $wgLang->timeAndDate( $timestamp, true ) );
 923                 }
 924
 925                 // Thumbnail
 926                 if( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE ) && !$file->isDeleted( File::DELETED_FILE ) ) {
 927                         $params = array(
 928                                 'width' => '120',
 929                                 'height' => '120',
 930                         );
 931                         $thumbnail = $file->transform( $params );
 932                         $options = array(
 933                                 'alt' => wfMsg( 'filehist-thumbtext', $wgLang->timeAndDate( $timestamp, true ) ),
 934                                 'file-link' => true,
 935                         );
 936                         $row .= '</td><td>' . $thumbnail->toHtml( $options );
 937                 } else {
 938                         $row .= '</td><td>' . wfMsgHtml( 'filehist-nothumb' );
 939                 }
 940                 $row .= "</td><td>";
 941
 942                 // Image dimensions
 943                 $row .= htmlspecialchars( $dims );
 944
 945                 // File size
 946                 $row .= " <span style='white-space: nowrap;'>(" . $this->skin->formatSize( $size ) . ')</span>';
 947
 948                 // Uploading user
 949                 $row .= '</td><td>';
 950                 if( $local ) {
 951                         // Hide deleted usernames
 952                         if( $file->isDeleted(File::DELETED_USER) ) {
 953                                 $row .= '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 954                         } else {
 955                                 $row .= $this->skin->userLink( $user, $usertext ) . " <span style='white-space: nowrap;'>" .
 956                                         $this->skin->userToolLinks( $user, $usertext ) . "</span>";
 957                         }
 958                 } else {
 959                         $row .= htmlspecialchars( $usertext );
 960                 }
 961                 $row .= '</td><td>';
 962
 963                 // Don't show deleted descriptions
 964                 if ( $file->isDeleted(File::DELETED_COMMENT) ) {
 965                         $row .= '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 966                 } else {
 967                         $row .= $this->skin->commentBlock( $description, $this->title );
 968                 }
 969                 $row .= '</td>';
 970
 971                 wfRunHooks( 'ImagePageFileHistoryLine', array( $this, $file, &$row, &$rowClass ) );
 972                 $classAttr = $rowClass ? " class='$rowClass'" : "";
 973
 974                 return "<tr{$classAttr}>{$row}</tr>\n";
 975         }
 976 }