includes/ImagePage.php

   1 <?php
   2 /**
   3  * Special handling for file description pages.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * Class for viewing MediaWiki file description pages
  25  *
  26  * @ingroup Media
  27  */
  28 class ImagePage extends Article {
  29         /** @var File */
  30         private $displayImg;
  31
  32         /** @var FileRepo */
  33         private $repo;
  34
  35         /** @var bool */
  36         private $fileLoaded;
  37
  38         /** @var bool */
  39         protected $mExtraDescription = false;
  40
  41         /**
  42          * @param Title $title
  43          * @return WikiFilePage
  44          */
  45         protected function newPage( Title $title ) {
  46                 // Overload mPage with a file-specific page
  47                 return new WikiFilePage( $title );
  48         }
  49
  50         /**
  51          * Constructor from a page id
  52          * @param int $id Article ID to load
  53          * @return ImagePage|null
  54          */
  55         public static function newFromID( $id ) {
  56                 $t = Title::newFromID( $id );
  57                 # @todo FIXME: Doesn't inherit right
  58                 return $t == null ? null : new self( $t );
  59                 # return $t == null ? null : new static( $t ); // PHP 5.3
  60         }
  61
  62         /**
  63          * @param File $file
  64          * @return void
  65          */
  66         public function setFile( $file ) {
  67                 $this->mPage->setFile( $file );
  68                 $this->displayImg = $file;
  69                 $this->fileLoaded = true;
  70         }
  71
  72         protected function loadFile() {
  73                 if ( $this->fileLoaded ) {
  74                         return;
  75                 }
  76                 $this->fileLoaded = true;
  77
  78                 $this->displayImg = $img = false;
  79                 wfRunHooks( 'ImagePageFindFile', array( $this, &$img, &$this->displayImg ) );
  80                 if ( !$img ) { // not set by hook?
  81                         $img = wfFindFile( $this->getTitle() );
  82                         if ( !$img ) {
  83                                 $img = wfLocalFile( $this->getTitle() );
  84                         }
  85                 }
  86                 $this->mPage->setFile( $img );
  87                 if ( !$this->displayImg ) { // not set by hook?
  88                         $this->displayImg = $img;
  89                 }
  90                 $this->repo = $img->getRepo();
  91         }
  92
  93         /**
  94          * Handler for action=render
  95          * Include body text only; none of the image extras
  96          */
  97         public function render() {
  98                 $this->getContext()->getOutput()->setArticleBodyOnly( true );
  99                 parent::view();
 100         }
 101
 102         public function view() {
 103                 global $wgShowEXIF;
 104
 105                 $out = $this->getContext()->getOutput();
 106                 $request = $this->getContext()->getRequest();
 107                 $diff = $request->getVal( 'diff' );
 108                 $diffOnly = $request->getBool(
 109                         'diffonly',
 110                         $this->getContext()->getUser()->getOption( 'diffonly' )
 111                 );
 112
 113                 if ( $this->getTitle()->getNamespace() != NS_FILE || ( $diff !== null && $diffOnly ) ) {
 114                         parent::view();
 115                         return;
 116                 }
 117
 118                 $this->loadFile();
 119
 120                 if ( $this->getTitle()->getNamespace() == NS_FILE && $this->mPage->getFile()->getRedirected() ) {
 121                         if ( $this->getTitle()->getDBkey() == $this->mPage->getFile()->getName() || $diff !== null ) {
 122                                 // mTitle is the same as the redirect target so ask Article
 123                                 // to perform the redirect for us.
 124                                 $request->setVal( 'diffonly', 'true' );
 125                                 parent::view();
 126                                 return;
 127                         } else {
 128                                 // mTitle is not the same as the redirect target so it is
 129                                 // probably the redirect page itself. Fake the redirect symbol
 130                                 $out->setPageTitle( $this->getTitle()->getPrefixedText() );
 131                                 $out->addHTML( $this->viewRedirect(
 132                                         Title::makeTitle( NS_FILE, $this->mPage->getFile()->getName() ),
 133                                         /* $appendSubtitle */ true,
 134                                         /* $forceKnown */ true )
 135                                 );
 136                                 $this->mPage->doViewUpdates( $this->getContext()->getUser(), $this->getOldID() );
 137                                 return;
 138                         }
 139                 }
 140
 141                 if ( $wgShowEXIF && $this->displayImg->exists() ) {
 142                         // @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
 143                         $formattedMetadata = $this->displayImg->formatMetadata();
 144                         $showmeta = $formattedMetadata !== false;
 145                 } else {
 146                         $showmeta = false;
 147                 }
 148
 149                 if ( !$diff && $this->displayImg->exists() ) {
 150                         $out->addHTML( $this->showTOC( $showmeta ) );
 151                 }
 152
 153                 if ( !$diff ) {
 154                         $this->openShowImage();
 155                 }
 156
 157                 # No need to display noarticletext, we use our own message, output in openShowImage()
 158                 if ( $this->mPage->getID() ) {
 159                         # NS_FILE is in the user language, but this section (the actual wikitext)
 160                         # should be in page content language
 161                         $pageLang = $this->getTitle()->getPageViewLanguage();
 162                         $out->addHTML( Xml::openElement( 'div', array( 'id' => 'mw-imagepage-content',
 163                                 'lang' => $pageLang->getHtmlCode(), 'dir' => $pageLang->getDir(),
 164                                 'class' => 'mw-content-' . $pageLang->getDir() ) ) );
 165
 166                         parent::view();
 167
 168                         $out->addHTML( Xml::closeElement( 'div' ) );
 169                 } else {
 170                         # Just need to set the right headers
 171                         $out->setArticleFlag( true );
 172                         $out->setPageTitle( $this->getTitle()->getPrefixedText() );
 173                         $this->mPage->doViewUpdates( $this->getContext()->getUser(), $this->getOldID() );
 174                 }
 175
 176                 # Show shared description, if needed
 177                 if ( $this->mExtraDescription ) {
 178                         $fol = wfMessage( 'shareddescriptionfollows' );
 179                         if ( !$fol->isDisabled() ) {
 180                                 $out->addWikiText( $fol->plain() );
 181                         }
 182                         $out->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . "</div>\n" );
 183                 }
 184
 185                 $this->closeShowImage();
 186                 $this->imageHistory();
 187                 // TODO: Cleanup the following
 188
 189                 $out->addHTML( Xml::element( 'h2',
 190                         array( 'id' => 'filelinks' ),
 191                         wfMessage( 'imagelinks' )->text() ) . "\n" );
 192                 $this->imageDupes();
 193                 # @todo FIXME: For some freaky reason, we can't redirect to foreign images.
 194                 # Yet we return metadata about the target. Definitely an issue in the FileRepo
 195                 $this->imageLinks();
 196
 197                 # Allow extensions to add something after the image links
 198                 $html = '';
 199                 wfRunHooks( 'ImagePageAfterImageLinks', array( $this, &$html ) );
 200                 if ( $html ) {
 201                         $out->addHTML( $html );
 202                 }
 203
 204                 if ( $showmeta ) {
 205                         $out->addHTML( Xml::element(
 206                                 'h2',
 207                                 array( 'id' => 'metadata' ),
 208                                 wfMessage( 'metadata' )->text() ) . "\n" );
 209                         $out->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
 210                         $out->addModules( array( 'mediawiki.action.view.metadata' ) );
 211                 }
 212
 213                 // Add remote Filepage.css
 214                 if ( !$this->repo->isLocal() ) {
 215                         $css = $this->repo->getDescriptionStylesheetUrl();
 216                         if ( $css ) {
 217                                 $out->addStyle( $css );
 218                         }
 219                 }
 220                 // always show the local local Filepage.css, bug 29277
 221                 $out->addModuleStyles( 'filepage' );
 222         }
 223
 224         /**
 225          * @return File
 226          */
 227         public function getDisplayedFile() {
 228                 $this->loadFile();
 229                 return $this->displayImg;
 230         }
 231
 232         /**
 233          * Create the TOC
 234          *
 235          * @param bool $metadata Whether or not to show the metadata link
 236          * @return string
 237          */
 238         protected function showTOC( $metadata ) {
 239                 $r = array(
 240                         '<li><a href="#file">' . wfMessage( 'file-anchor-link' )->escaped() . '</a></li>',
 241                         '<li><a href="#filehistory">' . wfMessage( 'filehist' )->escaped() . '</a></li>',
 242                         '<li><a href="#filelinks">' . wfMessage( 'imagelinks' )->escaped() . '</a></li>',
 243                 );
 244                 if ( $metadata ) {
 245                         $r[] = '<li><a href="#metadata">' . wfMessage( 'metadata' )->escaped() . '</a></li>';
 246                 }
 247
 248                 wfRunHooks( 'ImagePageShowTOC', array( $this, &$r ) );
 249
 250                 return '<ul id="filetoc">' . implode( "\n", $r ) . '</ul>';
 251         }
 252
 253         /**
 254          * Make a table with metadata to be shown in the output page.
 255          *
 256          * @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
 257          *
 258          * @param array $metadata The array containing the Exif data
 259          * @return string The metadata table. This is treated as Wikitext (!)
 260          */
 261         protected function makeMetadataTable( $metadata ) {
 262                 $r = "<div class=\"mw-imagepage-section-metadata\">";
 263                 $r .= wfMessage( 'metadata-help' )->plain();
 264                 $r .= "<table id=\"mw_metadata\" class=\"mw_metadata\">\n";
 265                 foreach ( $metadata as $type => $stuff ) {
 266                         foreach ( $stuff as $v ) {
 267                                 # @todo FIXME: Why is this using escapeId for a class?!
 268                                 $class = Sanitizer::escapeId( $v['id'] );
 269                                 if ( $type == 'collapsed' ) {
 270                                         // Handled by mediawiki.action.view.metadata module
 271                                         // and skins/common/shared.css.
 272                                         $class .= ' collapsable';
 273                                 }
 274                                 $r .= "<tr class=\"$class\">\n";
 275                                 $r .= "<th>{$v['name']}</th>\n";
 276                                 $r .= "<td>{$v['value']}</td>\n</tr>";
 277                         }
 278                 }
 279                 $r .= "</table>\n</div>\n";
 280                 return $r;
 281         }
 282
 283         /**
 284          * Overloading Article's getContentObject method.
 285          *
 286          * Omit noarticletext if sharedupload; text will be fetched from the
 287          * shared upload server if possible.
 288          * @return string
 289          */
 290         public function getContentObject() {
 291                 $this->loadFile();
 292                 if ( $this->mPage->getFile() && !$this->mPage->getFile()->isLocal() && 0 == $this->getID() ) {
 293                         return null;
 294                 }
 295                 return parent::getContentObject();
 296         }
 297
 298         protected function openShowImage() {
 299                 global $wgImageLimits, $wgEnableUploads, $wgSend404Code;
 300
 301                 $this->loadFile();
 302                 $out = $this->getContext()->getOutput();
 303                 $user = $this->getContext()->getUser();
 304                 $lang = $this->getContext()->getLanguage();
 305                 $dirmark = $lang->getDirMarkEntity();
 306                 $request = $this->getContext()->getRequest();
 307
 308                 $max = $this->getImageLimitsFromOption( $user, 'imagesize' );
 309                 $maxWidth = $max[0];
 310                 $maxHeight = $max[1];
 311
 312                 if ( $this->displayImg->exists() ) {
 313                         # image
 314                         $page = $request->getIntOrNull( 'page' );
 315                         if ( is_null( $page ) ) {
 316                                 $params = array();
 317                                 $page = 1;
 318                         } else {
 319                                 $params = array( 'page' => $page );
 320                         }
 321
 322                         $renderLang = $request->getVal( 'lang' );
 323                         if ( !is_null( $renderLang ) ) {
 324                                 $handler = $this->displayImg->getHandler();
 325                                 if ( $handler && $handler->validateParam( 'lang', $renderLang ) ) {
 326                                         $params['lang'] = $renderLang;
 327                                 } else {
 328                                         $renderLang = null;
 329                                 }
 330                         }
 331
 332                         $width_orig = $this->displayImg->getWidth( $page );
 333                         $width = $width_orig;
 334                         $height_orig = $this->displayImg->getHeight( $page );
 335                         $height = $height_orig;
 336
 337                         $filename = wfEscapeWikiText( $this->displayImg->getName() );
 338                         $linktext = $filename;
 339
 340                         wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this, &$out ) );
 341
 342                         if ( $this->displayImg->allowInlineDisplay() ) {
 343                                 # image
 344
 345                                 # "Download high res version" link below the image
 346                                 # $msgsize = wfMessage( 'file-info-size', $width_orig, $height_orig,
 347                                 #   Linker::formatSize( $this->displayImg->getSize() ), $mime )->escaped();
 348                                 # We'll show a thumbnail of this image
 349                                 if ( $width > $maxWidth || $height > $maxHeight ) {
 350                                         # Calculate the thumbnail size.
 351                                         # First case, the limiting factor is the width, not the height.
 352                                         /** @todo // FIXME: Possible division by 0. bug 36911 */
 353                                         if ( $width / $height >= $maxWidth / $maxHeight ) {
 354                                                 /** @todo // FIXME: Possible division by 0. bug 36911 */
 355                                                 $height = round( $height * $maxWidth / $width );
 356                                                 $width = $maxWidth;
 357                                                 # Note that $height <= $maxHeight now.
 358                                         } else {
 359                                                 /** @todo // FIXME: Possible division by 0. bug 36911 */
 360                                                 $newwidth = floor( $width * $maxHeight / $height );
 361                                                 /** @todo // FIXME: Possible division by 0. bug 36911 */
 362                                                 $height = round( $height * $newwidth / $width );
 363                                                 $width = $newwidth;
 364                                                 # Note that $height <= $maxHeight now, but might not be identical
 365                                                 # because of rounding.
 366                                         }
 367                                         $linktext = wfMessage( 'show-big-image' )->escaped();
 368                                         if ( $this->displayImg->getRepo()->canTransformVia404() ) {
 369                                                 $thumbSizes = $wgImageLimits;
 370                                                 // Also include the full sized resolution in the list, so
 371                                                 // that users know they can get it. This will link to the
 372                                                 // original file asset if mustRender() === false. In the case
 373                                                 // that we mustRender, some users have indicated that they would
 374                                                 // find it useful to have the full size image in the rendered
 375                                                 // image format.
 376                                                 $thumbSizes[] = array( $width_orig, $height_orig );
 377                                         } else {
 378                                                 # Creating thumb links triggers thumbnail generation.
 379                                                 # Just generate the thumb for the current users prefs.
 380                                                 $thumbSizes = array( $this->getImageLimitsFromOption( $user, 'thumbsize' ) );
 381                                                 if ( !$this->displayImg->mustRender() ) {
 382                                                         // We can safely include a link to the "full-size" preview,
 383                                                         // without actually rendering.
 384                                                         $thumbSizes[] = array( $width_orig, $height_orig );
 385                                                 }
 386                                         }
 387                                         # Generate thumbnails or thumbnail links as needed...
 388                                         $otherSizes = array();
 389                                         foreach ( $thumbSizes as $size ) {
 390                                                 // We include a thumbnail size in the list, if it is
 391                                                 // less than or equal to the original size of the image
 392                                                 // asset ($width_orig/$height_orig). We also exclude
 393                                                 // the current thumbnail's size ($width/$height)
 394                                                 // since that is added to the message separately, so
 395                                                 // it can be denoted as the current size being shown.
 396                                                 if ( $size[0] <= $width_orig && $size[1] <= $height_orig
 397                                                         && $size[0] != $width && $size[1] != $height
 398                                                 ) {
 399                                                         $sizeLink = $this->makeSizeLink( $params, $size[0], $size[1] );
 400                                                         if ( $sizeLink ) {
 401                                                                 $otherSizes[] = $sizeLink;
 402                                                         }
 403                                                 }
 404                                         }
 405                                         $otherSizes = array_unique( $otherSizes );
 406                                         $msgsmall = '';
 407                                         $sizeLinkBigImagePreview = $this->makeSizeLink( $params, $width, $height );
 408                                         if ( $sizeLinkBigImagePreview ) {
 409                                                 $msgsmall .= wfMessage( 'show-big-image-preview' )->
 410                                                         rawParams( $sizeLinkBigImagePreview )->
 411                                                         parse();
 412                                         }
 413                                         if ( count( $otherSizes ) ) {
 414                                                 $msgsmall .= ' ' .
 415                                                 Html::rawElement( 'span', array( 'class' => 'mw-filepage-other-resolutions' ),
 416                                                         wfMessage( 'show-big-image-other' )->rawParams( $lang->pipeList( $otherSizes ) )->
 417                                                         params( count( $otherSizes ) )->parse()
 418                                                 );
 419                                         }
 420                                 } elseif ( $width == 0 && $height == 0 ) {
 421                                         # Some sort of audio file that doesn't have dimensions
 422                                         # Don't output a no hi res message for such a file
 423                                         $msgsmall = '';
 424                                 } elseif ( $this->displayImg->isVectorized() ) {
 425                                         # For vectorized images, full size is just the frame size
 426                                         $msgsmall = '';
 427                                 } else {
 428                                         # Image is small enough to show full size on image page
 429                                         $msgsmall = wfMessage( 'file-nohires' )->parse();
 430                                 }
 431
 432                                 $params['width'] = $width;
 433                                 $params['height'] = $height;
 434                                 $thumbnail = $this->displayImg->transform( $params );
 435                                 Linker::processResponsiveImages( $this->displayImg, $thumbnail, $params );
 436
 437                                 $anchorclose = Html::rawElement(
 438                                         'div',
 439                                         array( 'class' => 'mw-filepage-resolutioninfo' ),
 440                                         $msgsmall
 441                                 );
 442
 443                                 $isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
 444                                 if ( $isMulti ) {
 445                                         $out->addModules( 'mediawiki.page.image.pagination' );
 446                                         $out->addHTML( '<table class="multipageimage"><tr><td>' );
 447                                 }
 448
 449                                 if ( $thumbnail ) {
 450                                         $options = array(
 451                                                 'alt' => $this->displayImg->getTitle()->getPrefixedText(),
 452                                                 'file-link' => true,
 453                                         );
 454                                         $out->addHTML( '<div class="fullImageLink" id="file">' .
 455                                                 $thumbnail->toHtml( $options ) .
 456                                                 $anchorclose . "</div>\n" );
 457                                 }
 458
 459                                 if ( $isMulti ) {
 460                                         $count = $this->displayImg->pageCount();
 461
 462                                         if ( $page > 1 ) {
 463                                                 $label = $out->parse( wfMessage( 'imgmultipageprev' )->text(), false );
 464                                                 $link = Linker::linkKnown(
 465                                                         $this->getTitle(),
 466                                                         $label,
 467                                                         array(),
 468                                                         array( 'page' => $page - 1 )
 469                                                 );
 470                                                 $thumb1 = Linker::makeThumbLinkObj(
 471                                                         $this->getTitle(),
 472                                                         $this->displayImg,
 473                                                         $link,
 474                                                         $label,
 475                                                         'none',
 476                                                         array( 'page' => $page - 1 )
 477                                                 );
 478                                         } else {
 479                                                 $thumb1 = '';
 480                                         }
 481
 482                                         if ( $page < $count ) {
 483                                                 $label = wfMessage( 'imgmultipagenext' )->text();
 484                                                 $link = Linker::linkKnown(
 485                                                         $this->getTitle(),
 486                                                         $label,
 487                                                         array(),
 488                                                         array( 'page' => $page + 1 )
 489                                                 );
 490                                                 $thumb2 = Linker::makeThumbLinkObj(
 491                                                         $this->getTitle(),
 492                                                         $this->displayImg,
 493                                                         $link,
 494                                                         $label,
 495                                                         'none',
 496                                                         array( 'page' => $page + 1 )
 497                                                 );
 498                                         } else {
 499                                                 $thumb2 = '';
 500                                         }
 501
 502                                         global $wgScript;
 503
 504                                         $formParams = array(
 505                                                 'name' => 'pageselector',
 506                                                 'action' => $wgScript,
 507                                         );
 508                                         $options = array();
 509                                         for ( $i = 1; $i <= $count; $i++ ) {
 510                                                 $options[] = Xml::option( $lang->formatNum( $i ), $i, $i == $page );
 511                                         }
 512                                         $select = Xml::tags( 'select',
 513                                                 array( 'id' => 'pageselector', 'name' => 'page' ),
 514                                                 implode( "\n", $options ) );
 515
 516                                         $out->addHTML(
 517                                                 '</td><td><div class="multipageimagenavbox">' .
 518                                                 Xml::openElement( 'form', $formParams ) .
 519                                                 Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
 520                                                         wfMessage( 'imgmultigoto' )->rawParams( $select )->parse() .
 521                                                 Xml::submitButton( wfMessage( 'imgmultigo' )->text() ) .
 522                                                 Xml::closeElement( 'form' ) .
 523                                                 "<hr />$thumb1\n$thumb2<br style=\"clear: both\" /></div></td></tr></table>"
 524                                         );
 525                                 }
 526                         } elseif ( $this->displayImg->isSafeFile() ) {
 527                                 # if direct link is allowed but it's not a renderable image, show an icon.
 528                                 $icon = $this->displayImg->iconThumb();
 529
 530                                 $out->addHTML( '<div class="fullImageLink" id="file">' .
 531                                         $icon->toHtml( array( 'file-link' => true ) ) .
 532                                         "</div>\n" );
 533                         }
 534
 535                         $longDesc = wfMessage( 'parentheses', $this->displayImg->getLongDesc() )->text();
 536
 537                         $medialink = "[[Media:$filename|$linktext]]";
 538
 539                         if ( !$this->displayImg->isSafeFile() ) {
 540                                 $warning = wfMessage( 'mediawarning' )->plain();
 541                                 // dirmark is needed here to separate the file name, which
 542                                 // most likely ends in Latin characters, from the description,
 543                                 // which may begin with the file type. In RTL environment
 544                                 // this will get messy.
 545                                 // The dirmark, however, must not be immediately adjacent
 546                                 // to the filename, because it can get copied with it.
 547                                 // See bug 25277.
 548                                 // @codingStandardsIgnoreStart Ignore long line
 549                                 $out->addWikiText( <<<EOT
 550 <div class="fullMedia"><span class="dangerousLink">{$medialink}</span> $dirmark<span class="fileInfo">$longDesc</span></div>
 551 <div class="mediaWarning">$warning</div>
 552 EOT
 553                                 );
 554                                 // @codingStandardsIgnoreEnd
 555                         } else {
 556                                 $out->addWikiText( <<<EOT
 557 <div class="fullMedia">{$medialink} {$dirmark}<span class="fileInfo">$longDesc</span>
 558 </div>
 559 EOT
 560                                 );
 561                         }
 562
 563                         $renderLangOptions = $this->displayImg->getAvailableLanguages();
 564                         if ( count( $renderLangOptions ) >= 1 ) {
 565                                 $currentLanguage = $renderLang;
 566                                 $defaultLang = $this->displayImg->getDefaultRenderLanguage();
 567                                 if ( is_null( $currentLanguage ) ) {
 568                                         $currentLanguage = $defaultLang;
 569                                 }
 570                                 $out->addHtml( $this->doRenderLangOpt( $renderLangOptions, $currentLanguage, $defaultLang ) );
 571                         }
 572
 573                         // Add cannot animate thumbnail warning
 574                         if ( !$this->displayImg->canAnimateThumbIfAppropriate() ) {
 575                                 // Include the extension so wiki admins can
 576                                 // customize it on a per file-type basis
 577                                 // (aka say things like use format X instead).
 578                                 // additionally have a specific message for
 579                                 // file-no-thumb-animation-gif
 580                                 $ext = $this->displayImg->getExtension();
 581                                 $noAnimMesg = wfMessageFallback(
 582                                         'file-no-thumb-animation-' . $ext,
 583                                         'file-no-thumb-animation'
 584                                 )->plain();
 585
 586                                 $out->addWikiText( <<<EOT
 587 <div class="mw-noanimatethumb">{$noAnimMesg}</div>
 588 EOT
 589                                 );
 590                         }
 591
 592                         if ( !$this->displayImg->isLocal() ) {
 593                                 $this->printSharedImageText();
 594                         }
 595                 } else {
 596                         # Image does not exist
 597                         if ( !$this->getID() ) {
 598                                 # No article exists either
 599                                 # Show deletion log to be consistent with normal articles
 600                                 LogEventsList::showLogExtract(
 601                                         $out,
 602                                         array( 'delete', 'move' ),
 603                                         $this->getTitle()->getPrefixedText(),
 604                                         '',
 605                                         array( 'lim' => 10,
 606                                                 'conds' => array( "log_action != 'revision'" ),
 607                                                 'showIfEmpty' => false,
 608                                                 'msgKey' => array( 'moveddeleted-notice' )
 609                                         )
 610                                 );
 611                         }
 612
 613                         if ( $wgEnableUploads && $user->isAllowed( 'upload' ) ) {
 614                                 // Only show an upload link if the user can upload
 615                                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 616                                 $nofile = array(
 617                                         'filepage-nofile-link',
 618                                         $uploadTitle->getFullURL( array( 'wpDestFile' => $this->mPage->getFile()->getName() ) )
 619                                 );
 620                         } else {
 621                                 $nofile = 'filepage-nofile';
 622                         }
 623                         // Note, if there is an image description page, but
 624                         // no image, then this setRobotPolicy is overridden
 625                         // by Article::View().
 626                         $out->setRobotPolicy( 'noindex,nofollow' );
 627                         $out->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
 628                         if ( !$this->getID() && $wgSend404Code ) {
 629                                 // If there is no image, no shared image, and no description page,
 630                                 // output a 404, to be consistent with articles.
 631                                 $request->response()->header( 'HTTP/1.1 404 Not Found' );
 632                         }
 633                 }
 634                 $out->setFileVersion( $this->displayImg );
 635         }
 636
 637         /**
 638          * Creates an thumbnail of specified size and returns an HTML link to it
 639          * @param array $params Scaler parameters
 640          * @param int $width
 641          * @param int $height
 642          * @return string
 643          */
 644         private function makeSizeLink( $params, $width, $height ) {
 645                 $params['width'] = $width;
 646                 $params['height'] = $height;
 647                 $thumbnail = $this->displayImg->transform( $params );
 648                 if ( $thumbnail && !$thumbnail->isError() ) {
 649                         return Html::rawElement( 'a', array(
 650                                 'href' => $thumbnail->getUrl(),
 651                                 'class' => 'mw-thumbnail-link'
 652                                 ), wfMessage( 'show-big-image-size' )->numParams(
 653                                         $thumbnail->getWidth(), $thumbnail->getHeight()
 654                                 )->parse() );
 655                 } else {
 656                         return '';
 657                 }
 658         }
 659
 660         /**
 661          * Show a notice that the file is from a shared repository
 662          */
 663         protected function printSharedImageText() {
 664                 $out = $this->getContext()->getOutput();
 665                 $this->loadFile();
 666
 667                 $descUrl = $this->mPage->getFile()->getDescriptionUrl();
 668                 $descText = $this->mPage->getFile()->getDescriptionText( $this->getContext()->getLanguage() );
 669
 670                 /* Add canonical to head if there is no local page for this shared file */
 671                 if ( $descUrl && $this->mPage->getID() == 0 ) {
 672                         $out->setCanonicalUrl( $descUrl );
 673                 }
 674
 675                 $wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
 676                 $repo = $this->mPage->getFile()->getRepo()->getDisplayName();
 677
 678                 if ( $descUrl && $descText && wfMessage( 'sharedupload-desc-here' )->plain() !== '-' ) {
 679                         $out->wrapWikiMsg( $wrap, array( 'sharedupload-desc-here', $repo, $descUrl ) );
 680                 } elseif ( $descUrl && wfMessage( 'sharedupload-desc-there' )->plain() !== '-' ) {
 681                         $out->wrapWikiMsg( $wrap, array( 'sharedupload-desc-there', $repo, $descUrl ) );
 682                 } else {
 683                         $out->wrapWikiMsg( $wrap, array( 'sharedupload', $repo ), ''/*BACKCOMPAT*/ );
 684                 }
 685
 686                 if ( $descText ) {
 687                         $this->mExtraDescription = $descText;
 688                 }
 689         }
 690
 691         public function getUploadUrl() {
 692                 $this->loadFile();
 693                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 694                 return $uploadTitle->getFullURL( array(
 695                         'wpDestFile' => $this->mPage->getFile()->getName(),
 696                         'wpForReUpload' => 1
 697                 ) );
 698         }
 699
 700         /**
 701          * Print out the various links at the bottom of the image page, e.g. reupload,
 702          * external editing (and instructions link) etc.
 703          */
 704         protected function uploadLinksBox() {
 705                 global $wgEnableUploads;
 706
 707                 if ( !$wgEnableUploads ) {
 708                         return;
 709                 }
 710
 711                 $this->loadFile();
 712                 if ( !$this->mPage->getFile()->isLocal() ) {
 713                         return;
 714                 }
 715
 716                 $out = $this->getContext()->getOutput();
 717                 $out->addHTML( "<ul>\n" );
 718
 719                 # "Upload a new version of this file" link
 720                 $canUpload = $this->getTitle()->userCan( 'upload', $this->getContext()->getUser() );
 721                 if ( $canUpload && UploadBase::userCanReUpload(
 722                                 $this->getContext()->getUser(),
 723                                 $this->mPage->getFile()->name )
 724                 ) {
 725                         $ulink = Linker::makeExternalLink(
 726                                 $this->getUploadUrl(),
 727                                 wfMessage( 'uploadnewversion-linktext' )->text()
 728                         );
 729                         $out->addHTML( "<li id=\"mw-imagepage-reupload-link\">"
 730                                 . "<div class=\"plainlinks\">{$ulink}</div></li>\n" );
 731                 } else {
 732                         $out->addHTML( "<li id=\"mw-imagepage-upload-disallowed\">"
 733                                 . $this->getContext()->msg( 'upload-disallowed-here' )->escaped() . "</li>\n" );
 734                 }
 735
 736                 $out->addHTML( "</ul>\n" );
 737         }
 738
 739         /**
 740          * For overloading
 741          */
 742         protected function closeShowImage() {
 743         }
 744
 745         /**
 746          * If the page we've just displayed is in the "Image" namespace,
 747          * we follow it with an upload history of the image and its usage.
 748          */
 749         protected function imageHistory() {
 750                 $this->loadFile();
 751                 $out = $this->getContext()->getOutput();
 752                 $pager = new ImageHistoryPseudoPager( $this );
 753                 $out->addHTML( $pager->getBody() );
 754                 $out->preventClickjacking( $pager->getPreventClickjacking() );
 755
 756                 $this->mPage->getFile()->resetHistory(); // free db resources
 757
 758                 # Exist check because we don't want to show this on pages where an image
 759                 # doesn't exist along with the noimage message, that would suck. -ævar
 760                 if ( $this->mPage->getFile()->exists() ) {
 761                         $this->uploadLinksBox();
 762                 }
 763         }
 764
 765         /**
 766          * @param string $target
 767          * @param int $limit
 768          * @return ResultWrapper
 769          */
 770         protected function queryImageLinks( $target, $limit ) {
 771                 $dbr = wfGetDB( DB_SLAVE );
 772
 773                 return $dbr->select(
 774                         array( 'imagelinks', 'page' ),
 775                         array( 'page_namespace', 'page_title', 'il_to' ),
 776                         array( 'il_to' => $target, 'il_from = page_id' ),
 777                         __METHOD__,
 778                         array( 'LIMIT' => $limit + 1, 'ORDER BY' => 'il_from', )
 779                 );
 780         }
 781
 782         protected function imageLinks() {
 783                 $limit = 100;
 784
 785                 $out = $this->getContext()->getOutput();
 786
 787                 $rows = array();
 788                 $redirects = array();
 789                 foreach ( $this->getTitle()->getRedirectsHere( NS_FILE ) as $redir ) {
 790                         $redirects[$redir->getDBkey()] = array();
 791                         $rows[] = (object)array(
 792                                 'page_namespace' => NS_FILE,
 793                                 'page_title' => $redir->getDBkey(),
 794                         );
 795                 }
 796
 797                 $res = $this->queryImageLinks( $this->getTitle()->getDBkey(), $limit + 1 );
 798                 foreach ( $res as $row ) {
 799                         $rows[] = $row;
 800                 }
 801                 $count = count( $rows );
 802
 803                 $hasMore = $count > $limit;
 804                 if ( !$hasMore && count( $redirects ) ) {
 805                         $res = $this->queryImageLinks( array_keys( $redirects ),
 806                                 $limit - count( $rows ) + 1 );
 807                         foreach ( $res as $row ) {
 808                                 $redirects[$row->il_to][] = $row;
 809                                 $count++;
 810                         }
 811                         $hasMore = ( $res->numRows() + count( $rows ) ) > $limit;
 812                 }
 813
 814                 if ( $count == 0 ) {
 815                         $out->wrapWikiMsg(
 816                                 Html::rawElement( 'div',
 817                                         array( 'id' => 'mw-imagepage-nolinkstoimage' ), "\n$1\n" ),
 818                                 'nolinkstoimage'
 819                         );
 820                         return;
 821                 }
 822
 823                 $out->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
 824                 if ( !$hasMore ) {
 825                         $out->addWikiMsg( 'linkstoimage', $count );
 826                 } else {
 827                         // More links than the limit. Add a link to [[Special:Whatlinkshere]]
 828                         $out->addWikiMsg( 'linkstoimage-more',
 829                                 $this->getContext()->getLanguage()->formatNum( $limit ),
 830                                 $this->getTitle()->getPrefixedDBkey()
 831                         );
 832                 }
 833
 834                 $out->addHTML(
 835                         Html::openElement( 'ul',
 836                                 array( 'class' => 'mw-imagepage-linkstoimage' ) ) . "\n"
 837                 );
 838                 $count = 0;
 839
 840                 // Sort the list by namespace:title
 841                 usort( $rows, array( $this, 'compare' ) );
 842
 843                 // Create links for every element
 844                 $currentCount = 0;
 845                 foreach ( $rows as $element ) {
 846                         $currentCount++;
 847                         if ( $currentCount > $limit ) {
 848                                 break;
 849                         }
 850
 851                         $query = array();
 852                         # Add a redirect=no to make redirect pages reachable
 853                         if ( isset( $redirects[$element->page_title] ) ) {
 854                                 $query['redirect'] = 'no';
 855                         }
 856                         $link = Linker::linkKnown(
 857                                 Title::makeTitle( $element->page_namespace, $element->page_title ),
 858                                 null, array(), $query
 859                         );
 860                         if ( !isset( $redirects[$element->page_title] ) ) {
 861                                 # No redirects
 862                                 $liContents = $link;
 863                         } elseif ( count( $redirects[$element->page_title] ) === 0 ) {
 864                                 # Redirect without usages
 865                                 $liContents = wfMessage( 'linkstoimage-redirect' )->rawParams( $link, '' )->parse();
 866                         } else {
 867                                 # Redirect with usages
 868                                 $li = '';
 869                                 foreach ( $redirects[$element->page_title] as $row ) {
 870                                         $currentCount++;
 871                                         if ( $currentCount > $limit ) {
 872                                                 break;
 873                                         }
 874
 875                                         $link2 = Linker::linkKnown( Title::makeTitle( $row->page_namespace, $row->page_title ) );
 876                                         $li .= Html::rawElement(
 877                                                 'li',
 878                                                 array( 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ),
 879                                                 $link2
 880                                                 ) . "\n";
 881                                 }
 882
 883                                 $ul = Html::rawElement(
 884                                         'ul',
 885                                         array( 'class' => 'mw-imagepage-redirectstofile' ),
 886                                         $li
 887                                         ) . "\n";
 888                                 $liContents = wfMessage( 'linkstoimage-redirect' )->rawParams(
 889                                         $link, $ul )->parse();
 890                         }
 891                         $out->addHTML( Html::rawElement(
 892                                         'li',
 893                                         array( 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ),
 894                                         $liContents
 895                                 ) . "\n"
 896                         );
 897
 898                 };
 899                 $out->addHTML( Html::closeElement( 'ul' ) . "\n" );
 900                 $res->free();
 901
 902                 // Add a links to [[Special:Whatlinkshere]]
 903                 if ( $count > $limit ) {
 904                         $out->addWikiMsg( 'morelinkstoimage', $this->getTitle()->getPrefixedDBkey() );
 905                 }
 906                 $out->addHTML( Html::closeElement( 'div' ) . "\n" );
 907         }
 908
 909         protected function imageDupes() {
 910                 $this->loadFile();
 911                 $out = $this->getContext()->getOutput();
 912
 913                 $dupes = $this->mPage->getDuplicates();
 914                 if ( count( $dupes ) == 0 ) {
 915                         return;
 916                 }
 917
 918                 $out->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
 919                 $out->addWikiMsg( 'duplicatesoffile',
 920                         $this->getContext()->getLanguage()->formatNum( count( $dupes ) ), $this->getTitle()->getDBkey()
 921                 );
 922                 $out->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
 923
 924                 /**
 925                  * @var $file File
 926                  */
 927                 foreach ( $dupes as $file ) {
 928                         $fromSrc = '';
 929                         if ( $file->isLocal() ) {
 930                                 $link = Linker::linkKnown( $file->getTitle() );
 931                         } else {
 932                                 $link = Linker::makeExternalLink( $file->getDescriptionUrl(),
 933                                         $file->getTitle()->getPrefixedText() );
 934                                 $fromSrc = wfMessage( 'shared-repo-from', $file->getRepo()->getDisplayName() )->text();
 935                         }
 936                         $out->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
 937                 }
 938                 $out->addHTML( "</ul></div>\n" );
 939         }
 940
 941         /**
 942          * Delete the file, or an earlier version of it
 943          */
 944         public function delete() {
 945                 $file = $this->mPage->getFile();
 946                 if ( !$file->exists() || !$file->isLocal() || $file->getRedirected() ) {
 947                         // Standard article deletion
 948                         parent::delete();
 949                         return;
 950                 }
 951
 952                 $deleter = new FileDeleteForm( $file );
 953                 $deleter->execute();
 954         }
 955
 956         /**
 957          * Display an error with a wikitext description
 958          *
 959          * @param string $description
 960          */
 961         function showError( $description ) {
 962                 $out = $this->getContext()->getOutput();
 963                 $out->setPageTitle( wfMessage( 'internalerror' ) );
 964                 $out->setRobotPolicy( 'noindex,nofollow' );
 965                 $out->setArticleRelated( false );
 966                 $out->enableClientCache( false );
 967                 $out->addWikiText( $description );
 968         }
 969
 970         /**
 971          * Callback for usort() to do link sorts by (namespace, title)
 972          * Function copied from Title::compare()
 973          *
 974          * @param object $a Object page to compare with
 975          * @param object $b Object page to compare with
 976          * @return int Result of string comparison, or namespace comparison
 977          */
 978         protected function compare( $a, $b ) {
 979                 if ( $a->page_namespace == $b->page_namespace ) {
 980                         return strcmp( $a->page_title, $b->page_title );
 981                 } else {
 982                         return $a->page_namespace - $b->page_namespace;
 983                 }
 984         }
 985
 986         /**
 987          * Returns the corresponding $wgImageLimits entry for the selected user option
 988          *
 989          * @param User $user
 990          * @param string $optionName Name of a option to check, typically imagesize or thumbsize
 991          * @return array
 992          * @since 1.21
 993          */
 994         public function getImageLimitsFromOption( $user, $optionName ) {
 995                 global $wgImageLimits;
 996
 997                 $option = $user->getIntOption( $optionName );
 998                 if ( !isset( $wgImageLimits[$option] ) ) {
 999                         $option = User::getDefaultOption( $optionName );
1000                 }
1001
1002                 // The user offset might still be incorrect, specially if
1003                 // $wgImageLimits got changed (see bug #8858).
1004                 if ( !isset( $wgImageLimits[$option] ) ) {
1005                         // Default to the first offset in $wgImageLimits
1006                         $option = 0;
1007                 }
1008
1009                 return isset( $wgImageLimits[$option] )
1010                         ? $wgImageLimits[$option]
1011                         : array( 800, 600 ); // if nothing is set, fallback to a hardcoded default
1012         }
1013
1014         /**
1015          * Output a drop-down box for language options for the file
1016          *
1017          * @param array $langChoices Array of string language codes
1018          * @param string $curLang Language code file is being viewed in.
1019          * @param string $defaultLang Language code that image is rendered in by default
1020          * @return string HTML to insert underneath image.
1021          */
1022         protected function doRenderLangOpt( array $langChoices, $curLang, $defaultLang ) {
1023                 global $wgScript;
1024                 sort( $langChoices );
1025                 $curLang = wfBCP47( $curLang );
1026                 $defaultLang = wfBCP47( $defaultLang );
1027                 $opts = '';
1028                 $haveCurrentLang = false;
1029                 $haveDefaultLang = false;
1030
1031                 // We make a list of all the language choices in the file.
1032                 // Additionally if the default language to render this file
1033                 // is not included as being in this file (for example, in svgs
1034                 // usually the fallback content is the english content) also
1035                 // include a choice for that. Last of all, if we're viewing
1036                 // the file in a language not on the list, add it as a choice.
1037                 foreach ( $langChoices as $lang ) {
1038                         $code = wfBCP47( $lang );
1039                         $name = Language::fetchLanguageName( $code, $this->getContext()->getLanguage()->getCode() );
1040                         if ( $name !== '' ) {
1041                                 $display = wfMessage( 'img-lang-opt', $code, $name )->text();
1042                         } else {
1043                                 $display = $code;
1044                         }
1045                         $opts .= "\n" . Xml::option( $display, $code, $curLang === $code );
1046                         if ( $curLang === $code ) {
1047                                 $haveCurrentLang = true;
1048                         }
1049                         if ( $defaultLang === $code ) {
1050                                 $haveDefaultLang = true;
1051                         }
1052                 }
1053                 if ( !$haveDefaultLang ) {
1054                         // Its hard to know if the content is really in the default language, or
1055                         // if its just unmarked content that could be in any language.
1056                         $opts = Xml::option(
1057                                 wfMessage( 'img-lang-default' )->text(),
1058                                 $defaultLang,
1059                                 $defaultLang === $curLang
1060                         ) . $opts;
1061                 }
1062                 if ( !$haveCurrentLang && $defaultLang !== $curLang ) {
1063                         $name = Language::fetchLanguageName( $curLang, $this->getContext()->getLanguage()->getCode() );
1064                         if ( $name !== '' ) {
1065                                 $display = wfMessage( 'img-lang-opt', $curLang, $name )->text();
1066                         } else {
1067                                 $display = $curLang;
1068                         }
1069                         $opts = Xml::option( $display, $curLang, true ) . $opts;
1070                 }
1071
1072                 $select = Html::rawElement(
1073                         'select',
1074                         array( 'id' => 'mw-imglangselector', 'name' => 'lang' ),
1075                         $opts
1076                 );
1077                 $submit = Xml::submitButton( wfMessage( 'img-lang-go' )->text() );
1078
1079                 $formContents = wfMessage( 'img-lang-info' )->rawParams( $select, $submit )->parse()
1080                         . Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() );
1081
1082                 $langSelectLine = Html::rawElement( 'div', array( 'id' => 'mw-imglangselector-line' ),
1083                         Html::rawElement( 'form', array( 'action' => $wgScript ), $formContents )
1084                 );
1085                 return $langSelectLine;
1086         }
1087 }
1088
1089 /**
1090  * Builds the image revision log shown on image pages
1091  *
1092  * @ingroup Media
1093  */
1094 class ImageHistoryList extends ContextSource {
1095
1096         /**
1097          * @var Title
1098          */
1099         protected $title;
1100
1101         /**
1102          * @var File
1103          */
1104         protected $img;
1105
1106         /**
1107          * @var ImagePage
1108          */
1109         protected $imagePage;
1110
1111         /**
1112          * @var File
1113          */
1114         protected $current;
1115
1116         protected $repo, $showThumb;
1117         protected $preventClickjacking = false;
1118
1119         /**
1120          * @param ImagePage $imagePage
1121          */
1122         public function __construct( $imagePage ) {
1123                 global $wgShowArchiveThumbnails;
1124                 $this->current = $imagePage->getFile();
1125                 $this->img = $imagePage->getDisplayedFile();
1126                 $this->title = $imagePage->getTitle();
1127                 $this->imagePage = $imagePage;
1128                 $this->showThumb = $wgShowArchiveThumbnails && $this->img->canRender();
1129                 $this->setContext( $imagePage->getContext() );
1130         }
1131
1132         /**
1133          * @return ImagePage
1134          */
1135         public function getImagePage() {
1136                 return $this->imagePage;
1137         }
1138
1139         /**
1140          * @return File
1141          */
1142         public function getFile() {
1143                 return $this->img;
1144         }
1145
1146         /**
1147          * @param string $navLinks
1148          * @return string
1149          */
1150         public function beginImageHistoryList( $navLinks = '' ) {
1151                 return Xml::element( 'h2', array( 'id' => 'filehistory' ), $this->msg( 'filehist' )->text() )
1152                         . "\n"
1153                         . "<div id=\"mw-imagepage-section-filehistory\">\n"
1154                         . $this->msg( 'filehist-help' )->parseAsBlock()
1155                         . $navLinks . "\n"
1156                         . Xml::openElement( 'table', array( 'class' => 'wikitable filehistory' ) ) . "\n"
1157                         . '<tr><td></td>'
1158                         . ( $this->current->isLocal()
1159                                 && ( $this->getUser()->isAllowedAny( 'delete', 'deletedhistory' ) ) ? '<td></td>' : '' )
1160                         . '<th>' . $this->msg( 'filehist-datetime' )->escaped() . '</th>'
1161                         . ( $this->showThumb ? '<th>' . $this->msg( 'filehist-thumb' )->escaped() . '</th>' : '' )
1162                         . '<th>' . $this->msg( 'filehist-dimensions' )->escaped() . '</th>'
1163                         . '<th>' . $this->msg( 'filehist-user' )->escaped() . '</th>'
1164                         . '<th>' . $this->msg( 'filehist-comment' )->escaped() . '</th>'
1165                         . "</tr>\n";
1166         }
1167
1168         /**
1169          * @param string $navLinks
1170          * @return string
1171          */
1172         public function endImageHistoryList( $navLinks = '' ) {
1173                 return "</table>\n$navLinks\n</div>\n";
1174         }
1175
1176         /**
1177          * @param bool $iscur
1178          * @param File $file
1179          * @return string
1180          */
1181         public function imageHistoryLine( $iscur, $file ) {
1182                 global $wgContLang;
1183
1184                 $user = $this->getUser();
1185                 $lang = $this->getLanguage();
1186                 $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
1187                 $img = $iscur ? $file->getName() : $file->getArchiveName();
1188                 $userId = $file->getUser( 'id' );
1189                 $userText = $file->getUser( 'text' );
1190                 $description = $file->getDescription( File::FOR_THIS_USER, $user );
1191
1192                 $local = $this->current->isLocal();
1193                 $row = $selected = '';
1194
1195                 // Deletion link
1196                 if ( $local && ( $user->isAllowedAny( 'delete', 'deletedhistory' ) ) ) {
1197                         $row .= '<td>';
1198                         # Link to remove from history
1199                         if ( $user->isAllowed( 'delete' ) ) {
1200                                 $q = array( 'action' => 'delete' );
1201                                 if ( !$iscur ) {
1202                                         $q['oldimage'] = $img;
1203                                 }
1204                                 $row .= Linker::linkKnown(
1205                                         $this->title,
1206                                         $this->msg( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' )->escaped(),
1207                                         array(), $q
1208                                 );
1209                         }
1210                         # Link to hide content. Don't show useless link to people who cannot hide revisions.
1211                         $canHide = $user->isAllowed( 'deleterevision' );
1212                         if ( $canHide || ( $user->isAllowed( 'deletedhistory' ) && $file->getVisibility() ) ) {
1213                                 if ( $user->isAllowed( 'delete' ) ) {
1214                                         $row .= '<br />';
1215                                 }
1216                                 // If file is top revision or locked from this user, don't link
1217                                 if ( $iscur || !$file->userCan( File::DELETED_RESTRICTED, $user ) ) {
1218                                         $del = Linker::revDeleteLinkDisabled( $canHide );
1219                                 } else {
1220                                         list( $ts, ) = explode( '!', $img, 2 );
1221                                         $query = array(
1222                                                 'type' => 'oldimage',
1223                                                 'target' => $this->title->getPrefixedText(),
1224                                                 'ids' => $ts,
1225                                         );
1226                                         $del = Linker::revDeleteLink( $query,
1227                                                 $file->isDeleted( File::DELETED_RESTRICTED ), $canHide );
1228                                 }
1229                                 $row .= $del;
1230                         }
1231                         $row .= '</td>';
1232                 }
1233
1234                 // Reversion link/current indicator
1235                 $row .= '<td>';
1236                 if ( $iscur ) {
1237                         $row .= $this->msg( 'filehist-current' )->escaped();
1238                 } elseif ( $local && $this->title->quickUserCan( 'edit', $user )
1239                         && $this->title->quickUserCan( 'upload', $user )
1240                 ) {
1241                         if ( $file->isDeleted( File::DELETED_FILE ) ) {
1242                                 $row .= $this->msg( 'filehist-revert' )->escaped();
1243                         } else {
1244                                 $row .= Linker::linkKnown(
1245                                         $this->title,
1246                                         $this->msg( 'filehist-revert' )->escaped(),
1247                                         array(),
1248                                         array(
1249                                                 'action' => 'revert',
1250                                                 'oldimage' => $img,
1251                                                 'wpEditToken' => $user->getEditToken( $img )
1252                                         )
1253                                 );
1254                         }
1255                 }
1256                 $row .= '</td>';
1257
1258                 // Date/time and image link
1259                 if ( $file->getTimestamp() === $this->img->getTimestamp() ) {
1260                         $selected = "class='filehistory-selected'";
1261                 }
1262                 $row .= "<td $selected style='white-space: nowrap;'>";
1263                 if ( !$file->userCan( File::DELETED_FILE, $user ) ) {
1264                         # Don't link to unviewable files
1265                         $row .= '<span class="history-deleted">'
1266                                 . $lang->userTimeAndDate( $timestamp, $user ) . '</span>';
1267                 } elseif ( $file->isDeleted( File::DELETED_FILE ) ) {
1268                         if ( $local ) {
1269                                 $this->preventClickjacking();
1270                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
1271                                 # Make a link to review the image
1272                                 $url = Linker::linkKnown(
1273                                         $revdel,
1274                                         $lang->userTimeAndDate( $timestamp, $user ),
1275                                         array(),
1276                                         array(
1277                                                 'target' => $this->title->getPrefixedText(),
1278                                                 'file' => $img,
1279                                                 'token' => $user->getEditToken( $img )
1280                                         )
1281                                 );
1282                         } else {
1283                                 $url = $lang->userTimeAndDate( $timestamp, $user );
1284                         }
1285                         $row .= '<span class="history-deleted">' . $url . '</span>';
1286                 } else {
1287                         $url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
1288                         $row .= Xml::element(
1289                                 'a',
1290                                 array( 'href' => $url ),
1291                                 $lang->userTimeAndDate( $timestamp, $user )
1292                         );
1293                 }
1294                 $row .= "</td>";
1295
1296                 // Thumbnail
1297                 if ( $this->showThumb ) {
1298                         $row .= '<td>' . $this->getThumbForLine( $file ) . '</td>';
1299                 }
1300
1301                 // Image dimensions + size
1302                 $row .= '<td>';
1303                 $row .= htmlspecialchars( $file->getDimensionsString() );
1304                 $row .= $this->msg( 'word-separator' )->plain();
1305                 $row .= '<span style="white-space: nowrap;">';
1306                 $row .= $this->msg( 'parentheses' )->rawParams( Linker::formatSize( $file->getSize() ) )->plain();
1307                 $row .= '</span>';
1308                 $row .= '</td>';
1309
1310                 // Uploading user
1311                 $row .= '<td>';
1312                 // Hide deleted usernames
1313                 if ( $file->isDeleted( File::DELETED_USER ) ) {
1314                         $row .= '<span class="history-deleted">'
1315                                 . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
1316                 } else {
1317                         if ( $local ) {
1318                                 $row .= Linker::userLink( $userId, $userText );
1319                                 $row .= $this->msg( 'word-separator' )->plain();
1320                                 $row .= '<span style="white-space: nowrap;">';
1321                                 $row .= Linker::userToolLinks( $userId, $userText );
1322                                 $row .= '</span>';
1323                         } else {
1324                                 $row .= htmlspecialchars( $userText );
1325                         }
1326                 }
1327                 $row .= '</td>';
1328
1329                 // Don't show deleted descriptions
1330                 if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
1331                         $row .= '<td><span class="history-deleted">' .
1332                                 $this->msg( 'rev-deleted-comment' )->escaped() . '</span></td>';
1333                 } else {
1334                         $row .= '<td dir="' . $wgContLang->getDir() . '">' .
1335                                 Linker::formatComment( $description, $this->title ) . '</td>';
1336                 }
1337
1338                 $rowClass = null;
1339                 wfRunHooks( 'ImagePageFileHistoryLine', array( $this, $file, &$row, &$rowClass ) );
1340                 $classAttr = $rowClass ? " class='$rowClass'" : '';
1341
1342                 return "<tr{$classAttr}>{$row}</tr>\n";
1343         }
1344
1345         /**
1346          * @param File $file
1347          * @return string
1348          */
1349         protected function getThumbForLine( $file ) {
1350                 $lang = $this->getLanguage();
1351                 $user = $this->getUser();
1352                 if ( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE, $user )
1353                         && !$file->isDeleted( File::DELETED_FILE )
1354                 ) {
1355                         $params = array(
1356                                 'width' => '120',
1357                                 'height' => '120',
1358                         );
1359                         $timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
1360
1361                         $thumbnail = $file->transform( $params );
1362                         $options = array(
1363                                 'alt' => $this->msg( 'filehist-thumbtext',
1364                                         $lang->userTimeAndDate( $timestamp, $user ),
1365                                         $lang->userDate( $timestamp, $user ),
1366                                         $lang->userTime( $timestamp, $user ) )->text(),
1367                                 'file-link' => true,
1368                         );
1369
1370                         if ( !$thumbnail ) {
1371                                 return $this->msg( 'filehist-nothumb' )->escaped();
1372                         }
1373
1374                         return $thumbnail->toHtml( $options );
1375                 } else {
1376                         return $this->msg( 'filehist-nothumb' )->escaped();
1377                 }
1378         }
1379
1380         /**
1381          * @param bool $enable
1382          */
1383         protected function preventClickjacking( $enable = true ) {
1384                 $this->preventClickjacking = $enable;
1385         }
1386
1387         /**
1388          * @return bool
1389          */
1390         public function getPreventClickjacking() {
1391                 return $this->preventClickjacking;
1392         }
1393 }
1394
1395 class ImageHistoryPseudoPager extends ReverseChronologicalPager {
1396         protected $preventClickjacking = false;
1397
1398         /**
1399          * @var File
1400          */
1401         protected $mImg;
1402
1403         /**
1404          * @var Title
1405          */
1406         protected $mTitle;
1407
1408         /**
1409          * @param ImagePage $imagePage
1410          */
1411         function __construct( $imagePage ) {
1412                 parent::__construct( $imagePage->getContext() );
1413                 $this->mImagePage = $imagePage;
1414                 $this->mTitle = clone ( $imagePage->getTitle() );
1415                 $this->mTitle->setFragment( '#filehistory' );
1416                 $this->mImg = null;
1417                 $this->mHist = array();
1418                 $this->mRange = array( 0, 0 ); // display range
1419         }
1420
1421         /**
1422          * @return Title
1423          */
1424         function getTitle() {
1425                 return $this->mTitle;
1426         }
1427
1428         function getQueryInfo() {
1429                 return false;
1430         }
1431
1432         /**
1433          * @return string
1434          */
1435         function getIndexField() {
1436                 return '';
1437         }
1438
1439         /**
1440          * @param object $row
1441          * @return string
1442          */
1443         function formatRow( $row ) {
1444                 return '';
1445         }
1446
1447         /**
1448          * @return string
1449          */
1450         function getBody() {
1451                 $s = '';
1452                 $this->doQuery();
1453                 if ( count( $this->mHist ) ) {
1454                         $list = new ImageHistoryList( $this->mImagePage );
1455                         # Generate prev/next links
1456                         $navLink = $this->getNavigationBar();
1457                         $s = $list->beginImageHistoryList( $navLink );
1458                         // Skip rows there just for paging links
1459                         for ( $i = $this->mRange[0]; $i <= $this->mRange[1]; $i++ ) {
1460                                 $file = $this->mHist[$i];
1461                                 $s .= $list->imageHistoryLine( !$file->isOld(), $file );
1462                         }
1463                         $s .= $list->endImageHistoryList( $navLink );
1464
1465                         if ( $list->getPreventClickjacking() ) {
1466                                 $this->preventClickjacking();
1467                         }
1468                 }
1469                 return $s;
1470         }
1471
1472         function doQuery() {
1473                 if ( $this->mQueryDone ) {
1474                         return;
1475                 }
1476                 $this->mImg = $this->mImagePage->getFile(); // ensure loading
1477                 if ( !$this->mImg->exists() ) {
1478                         return;
1479                 }
1480                 $queryLimit = $this->mLimit + 1; // limit plus extra row
1481                 if ( $this->mIsBackwards ) {
1482                         // Fetch the file history
1483                         $this->mHist = $this->mImg->getHistory( $queryLimit, null, $this->mOffset, false );
1484                         // The current rev may not meet the offset/limit
1485                         $numRows = count( $this->mHist );
1486                         if ( $numRows <= $this->mLimit && $this->mImg->getTimestamp() > $this->mOffset ) {
1487                                 $this->mHist = array_merge( array( $this->mImg ), $this->mHist );
1488                         }
1489                 } else {
1490                         // The current rev may not meet the offset
1491                         if ( !$this->mOffset || $this->mImg->getTimestamp() < $this->mOffset ) {
1492                                 $this->mHist[] = $this->mImg;
1493                         }
1494                         // Old image versions (fetch extra row for nav links)
1495                         $oiLimit = count( $this->mHist ) ? $this->mLimit : $this->mLimit + 1;
1496                         // Fetch the file history
1497                         $this->mHist = array_merge( $this->mHist,
1498                                 $this->mImg->getHistory( $oiLimit, $this->mOffset, null, false ) );
1499                 }
1500                 $numRows = count( $this->mHist ); // Total number of query results
1501                 if ( $numRows ) {
1502                         # Index value of top item in the list
1503                         $firstIndex = $this->mIsBackwards ?
1504                                 $this->mHist[$numRows - 1]->getTimestamp() : $this->mHist[0]->getTimestamp();
1505                         # Discard the extra result row if there is one
1506                         if ( $numRows > $this->mLimit && $numRows > 1 ) {
1507                                 if ( $this->mIsBackwards ) {
1508                                         # Index value of item past the index
1509                                         $this->mPastTheEndIndex = $this->mHist[0]->getTimestamp();
1510                                         # Index value of bottom item in the list
1511                                         $lastIndex = $this->mHist[1]->getTimestamp();
1512                                         # Display range
1513                                         $this->mRange = array( 1, $numRows - 1 );
1514                                 } else {
1515                                         # Index value of item past the index
1516                                         $this->mPastTheEndIndex = $this->mHist[$numRows - 1]->getTimestamp();
1517                                         # Index value of bottom item in the list
1518                                         $lastIndex = $this->mHist[$numRows - 2]->getTimestamp();
1519                                         # Display range
1520                                         $this->mRange = array( 0, $numRows - 2 );
1521                                 }
1522                         } else {
1523                                 # Setting indexes to an empty string means that they will be
1524                                 # omitted if they would otherwise appear in URLs. It just so
1525                                 # happens that this  is the right thing to do in the standard
1526                                 # UI, in all the relevant cases.
1527                                 $this->mPastTheEndIndex = '';
1528                                 # Index value of bottom item in the list
1529                                 $lastIndex = $this->mIsBackwards ?
1530                                         $this->mHist[0]->getTimestamp() : $this->mHist[$numRows - 1]->getTimestamp();
1531                                 # Display range
1532                                 $this->mRange = array( 0, $numRows - 1 );
1533                         }
1534                 } else {
1535                         $firstIndex = '';
1536                         $lastIndex = '';
1537                         $this->mPastTheEndIndex = '';
1538                 }
1539                 if ( $this->mIsBackwards ) {
1540                         $this->mIsFirst = ( $numRows < $queryLimit );
1541                         $this->mIsLast = ( $this->mOffset == '' );
1542                         $this->mLastShown = $firstIndex;
1543                         $this->mFirstShown = $lastIndex;
1544                 } else {
1545                         $this->mIsFirst = ( $this->mOffset == '' );
1546                         $this->mIsLast = ( $numRows < $queryLimit );
1547                         $this->mLastShown = $lastIndex;
1548                         $this->mFirstShown = $firstIndex;
1549                 }
1550                 $this->mQueryDone = true;
1551         }
1552
1553         /**
1554          * @param bool $enable
1555          */
1556         protected function preventClickjacking( $enable = true ) {
1557                 $this->preventClickjacking = $enable;
1558         }
1559
1560         /**
1561          * @return bool
1562          */
1563         public function getPreventClickjacking() {
1564                 return $this->preventClickjacking;
1565         }
1566
1567 }