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