Merge branch 'archwiki'

# Conflicts:
#	skins/ArchLinux.php
#	skins/ArchLinux/archlogo.gif

1 files changed, 1615 insertions, 0 deletions

diff --git a/includes/page/ImagePage.php b/includes/page/ImagePage.php
new file mode 100644
index 00000000..d06c8191
--- /dev/null
+++ b/includes/page/ImagePage.php
@@ -0,0 +1,1615 @@
+<?php
+/**
+ * Special handling for file description pages.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Class for viewing MediaWiki file description pages
+ *
+ * @ingroup Media
+ */
+class ImagePage extends Article {
+	/** @var File */
+	private $displayImg;
+
+	/** @var FileRepo */
+	private $repo;
+
+	/** @var bool */
+	private $fileLoaded;
+
+	/** @var bool */
+	protected $mExtraDescription = false;
+
+	/**
+	 * @param Title $title
+	 * @return WikiFilePage
+	 */
+	protected function newPage( Title $title ) {
+		// Overload mPage with a file-specific page
+		return new WikiFilePage( $title );
+	}
+
+	/**
+	 * Constructor from a page id
+	 * @param int $id Article ID to load
+	 * @return ImagePage|null
+	 */
+	public static function newFromID( $id ) {
+		$t = Title::newFromID( $id );
+		# @todo FIXME: Doesn't inherit right
+		return $t == null ? null : new self( $t );
+		# return $t == null ? null : new static( $t ); // PHP 5.3
+	}
+
+	/**
+	 * @param File $file
+	 * @return void
+	 */
+	public function setFile( $file ) {
+		$this->mPage->setFile( $file );
+		$this->displayImg = $file;
+		$this->fileLoaded = true;
+	}
+
+	protected function loadFile() {
+		if ( $this->fileLoaded ) {
+			return;
+		}
+		$this->fileLoaded = true;
+
+		$this->displayImg = $img = false;
+		wfRunHooks( 'ImagePageFindFile', array( $this, &$img, &$this->displayImg ) );
+		if ( !$img ) { // not set by hook?
+			$img = wfFindFile( $this->getTitle() );
+			if ( !$img ) {
+				$img = wfLocalFile( $this->getTitle() );
+			}
+		}
+		$this->mPage->setFile( $img );
+		if ( !$this->displayImg ) { // not set by hook?
+			$this->displayImg = $img;
+		}
+		$this->repo = $img->getRepo();
+	}
+
+	/**
+	 * Handler for action=render
+	 * Include body text only; none of the image extras
+	 */
+	public function render() {
+		$this->getContext()->getOutput()->setArticleBodyOnly( true );
+		parent::view();
+	}
+
+	public function view() {
+		global $wgShowEXIF;
+
+		$out = $this->getContext()->getOutput();
+		$request = $this->getContext()->getRequest();
+		$diff = $request->getVal( 'diff' );
+		$diffOnly = $request->getBool(
+			'diffonly',
+			$this->getContext()->getUser()->getOption( 'diffonly' )
+		);
+
+		if ( $this->getTitle()->getNamespace() != NS_FILE || ( $diff !== null && $diffOnly ) ) {
+			parent::view();
+			return;
+		}
+
+		$this->loadFile();
+
+		if ( $this->getTitle()->getNamespace() == NS_FILE && $this->mPage->getFile()->getRedirected() ) {
+			if ( $this->getTitle()->getDBkey() == $this->mPage->getFile()->getName() || $diff !== null ) {
+				// mTitle is the same as the redirect target so ask Article
+				// to perform the redirect for us.
+				$request->setVal( 'diffonly', 'true' );
+				parent::view();
+				return;
+			} else {
+				// mTitle is not the same as the redirect target so it is
+				// probably the redirect page itself. Fake the redirect symbol
+				$out->setPageTitle( $this->getTitle()->getPrefixedText() );
+				$out->addHTML( $this->viewRedirect(
+					Title::makeTitle( NS_FILE, $this->mPage->getFile()->getName() ),
+					/* $appendSubtitle */ true,
+					/* $forceKnown */ true )
+				);
+				$this->mPage->doViewUpdates( $this->getContext()->getUser(), $this->getOldID() );
+				return;
+			}
+		}
+
+		if ( $wgShowEXIF && $this->displayImg->exists() ) {
+			// @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
+			$formattedMetadata = $this->displayImg->formatMetadata();
+			$showmeta = $formattedMetadata !== false;
+		} else {
+			$showmeta = false;
+		}
+
+		if ( !$diff && $this->displayImg->exists() ) {
+			$out->addHTML( $this->showTOC( $showmeta ) );
+		}
+
+		if ( !$diff ) {
+			$this->openShowImage();
+		}
+
+		# No need to display noarticletext, we use our own message, output in openShowImage()
+		if ( $this->mPage->getID() ) {
+			# NS_FILE is in the user language, but this section (the actual wikitext)
+			# should be in page content language
+			$pageLang = $this->getTitle()->getPageViewLanguage();
+			$out->addHTML( Xml::openElement( 'div', array( 'id' => 'mw-imagepage-content',
+				'lang' => $pageLang->getHtmlCode(), 'dir' => $pageLang->getDir(),
+				'class' => 'mw-content-' . $pageLang->getDir() ) ) );
+
+			parent::view();
+
+			$out->addHTML( Xml::closeElement( 'div' ) );
+		} else {
+			# Just need to set the right headers
+			$out->setArticleFlag( true );
+			$out->setPageTitle( $this->getTitle()->getPrefixedText() );
+			$this->mPage->doViewUpdates( $this->getContext()->getUser(), $this->getOldID() );
+		}
+
+		# Show shared description, if needed
+		if ( $this->mExtraDescription ) {
+			$fol = wfMessage( 'shareddescriptionfollows' );
+			if ( !$fol->isDisabled() ) {
+				$out->addWikiText( $fol->plain() );
+			}
+			$out->addHTML( '<div id="shared-image-desc">' . $this->mExtraDescription . "</div>\n" );
+		}
+
+		$this->closeShowImage();
+		$this->imageHistory();
+		// TODO: Cleanup the following
+
+		$out->addHTML( Xml::element( 'h2',
+			array( 'id' => 'filelinks' ),
+			wfMessage( 'imagelinks' )->text() ) . "\n" );
+		$this->imageDupes();
+		# @todo FIXME: For some freaky reason, we can't redirect to foreign images.
+		# Yet we return metadata about the target. Definitely an issue in the FileRepo
+		$this->imageLinks();
+
+		# Allow extensions to add something after the image links
+		$html = '';
+		wfRunHooks( 'ImagePageAfterImageLinks', array( $this, &$html ) );
+		if ( $html ) {
+			$out->addHTML( $html );
+		}
+
+		if ( $showmeta ) {
+			$out->addHTML( Xml::element(
+				'h2',
+				array( 'id' => 'metadata' ),
+				wfMessage( 'metadata' )->text() ) . "\n" );
+			$out->addWikiText( $this->makeMetadataTable( $formattedMetadata ) );
+			$out->addModules( array( 'mediawiki.action.view.metadata' ) );
+		}
+
+		// Add remote Filepage.css
+		if ( !$this->repo->isLocal() ) {
+			$css = $this->repo->getDescriptionStylesheetUrl();
+			if ( $css ) {
+				$out->addStyle( $css );
+			}
+		}
+		// always show the local local Filepage.css, bug 29277
+		$out->addModuleStyles( 'filepage' );
+	}
+
+	/**
+	 * @return File
+	 */
+	public function getDisplayedFile() {
+		$this->loadFile();
+		return $this->displayImg;
+	}
+
+	/**
+	 * Create the TOC
+	 *
+	 * @param bool $metadata Whether or not to show the metadata link
+	 * @return string
+	 */
+	protected function showTOC( $metadata ) {
+		$r = array(
+			'<li><a href="#file">' . wfMessage( 'file-anchor-link' )->escaped() . '</a></li>',
+			'<li><a href="#filehistory">' . wfMessage( 'filehist' )->escaped() . '</a></li>',
+			'<li><a href="#filelinks">' . wfMessage( 'imagelinks' )->escaped() . '</a></li>',
+		);
+		if ( $metadata ) {
+			$r[] = '<li><a href="#metadata">' . wfMessage( 'metadata' )->escaped() . '</a></li>';
+		}
+
+		wfRunHooks( 'ImagePageShowTOC', array( $this, &$r ) );
+
+		return '<ul id="filetoc">' . implode( "\n", $r ) . '</ul>';
+	}
+
+	/**
+	 * Make a table with metadata to be shown in the output page.
+	 *
+	 * @todo FIXME: Bad interface, see note on MediaHandler::formatMetadata().
+	 *
+	 * @param array $metadata The array containing the Exif data
+	 * @return string The metadata table. This is treated as Wikitext (!)
+	 */
+	protected function makeMetadataTable( $metadata ) {
+		$r = "<div class=\"mw-imagepage-section-metadata\">";
+		$r .= wfMessage( 'metadata-help' )->plain();
+		$r .= "<table id=\"mw_metadata\" class=\"mw_metadata\">\n";
+		foreach ( $metadata as $type => $stuff ) {
+			foreach ( $stuff as $v ) {
+				# @todo FIXME: Why is this using escapeId for a class?!
+				$class = Sanitizer::escapeId( $v['id'] );
+				if ( $type == 'collapsed' ) {
+					// Handled by mediawiki.action.view.metadata module.
+					$class .= ' collapsable';
+				}
+				$r .= "<tr class=\"$class\">\n";
+				$r .= "<th>{$v['name']}</th>\n";
+				$r .= "<td>{$v['value']}</td>\n</tr>";
+			}
+		}
+		$r .= "</table>\n</div>\n";
+		return $r;
+	}
+
+	/**
+	 * Overloading Article's getContentObject method.
+	 *
+	 * Omit noarticletext if sharedupload; text will be fetched from the
+	 * shared upload server if possible.
+	 * @return string
+	 */
+	public function getContentObject() {
+		$this->loadFile();
+		if ( $this->mPage->getFile() && !$this->mPage->getFile()->isLocal() && 0 == $this->getID() ) {
+			return null;
+		}
+		return parent::getContentObject();
+	}
+
+	protected function openShowImage() {
+		global $wgEnableUploads, $wgSend404Code;
+
+		$this->loadFile();
+		$out = $this->getContext()->getOutput();
+		$user = $this->getContext()->getUser();
+		$lang = $this->getContext()->getLanguage();
+		$dirmark = $lang->getDirMarkEntity();
+		$request = $this->getContext()->getRequest();
+
+		$max = $this->getImageLimitsFromOption( $user, 'imagesize' );
+		$maxWidth = $max[0];
+		$maxHeight = $max[1];
+
+		if ( $this->displayImg->exists() ) {
+			# image
+			$page = $request->getIntOrNull( 'page' );
+			if ( is_null( $page ) ) {
+				$params = array();
+				$page = 1;
+			} else {
+				$params = array( 'page' => $page );
+			}
+
+			$renderLang = $request->getVal( 'lang' );
+			if ( !is_null( $renderLang ) ) {
+				$handler = $this->displayImg->getHandler();
+				if ( $handler && $handler->validateParam( 'lang', $renderLang ) ) {
+					$params['lang'] = $renderLang;
+				} else {
+					$renderLang = null;
+				}
+			}
+
+			$width_orig = $this->displayImg->getWidth( $page );
+			$width = $width_orig;
+			$height_orig = $this->displayImg->getHeight( $page );
+			$height = $height_orig;
+
+			$filename = wfEscapeWikiText( $this->displayImg->getName() );
+			$linktext = $filename;
+
+			wfRunHooks( 'ImageOpenShowImageInlineBefore', array( &$this, &$out ) );
+
+			if ( $this->displayImg->allowInlineDisplay() ) {
+				# image
+				# "Download high res version" link below the image
+				# $msgsize = wfMessage( 'file-info-size', $width_orig, $height_orig,
+				#   Linker::formatSize( $this->displayImg->getSize() ), $mime )->escaped();
+				# We'll show a thumbnail of this image
+				if ( $width > $maxWidth || $height > $maxHeight || $this->displayImg->isVectorized() ) {
+					list( $width, $height ) = $this->getDisplayWidthHeight(
+						$maxWidth, $maxHeight, $width, $height
+					);
+					$linktext = wfMessage( 'show-big-image' )->escaped();
+
+					$thumbSizes = $this->getThumbSizes( $width, $height, $width_orig, $height_orig );
+					# Generate thumbnails or thumbnail links as needed...
+					$otherSizes = array();
+					foreach ( $thumbSizes as $size ) {
+						// We include a thumbnail size in the list, if it is
+						// less than or equal to the original size of the image
+						// asset ($width_orig/$height_orig). We also exclude
+						// the current thumbnail's size ($width/$height)
+						// since that is added to the message separately, so
+						// it can be denoted as the current size being shown.
+						// Vectorized images are "infinitely" big, so all thumb
+						// sizes are shown.
+						if ( ( ( $size[0] <= $width_orig && $size[1] <= $height_orig )
+								|| $this->displayImg->isVectorized() )
+							&& $size[0] != $width && $size[1] != $height
+						) {
+							$sizeLink = $this->makeSizeLink( $params, $size[0], $size[1] );
+							if ( $sizeLink ) {
+								$otherSizes[] = $sizeLink;
+							}
+						}
+					}
+					$otherSizes = array_unique( $otherSizes );
+
+					$msgsmall = '';
+					$sizeLinkBigImagePreview = $this->makeSizeLink( $params, $width, $height );
+					if ( $sizeLinkBigImagePreview ) {
+						$msgsmall .= wfMessage( 'show-big-image-preview' )->
+							rawParams( $sizeLinkBigImagePreview )->
+							parse();
+					}
+					if ( count( $otherSizes ) ) {
+						$msgsmall .= ' ' .
+						Html::rawElement( 'span', array( 'class' => 'mw-filepage-other-resolutions' ),
+							wfMessage( 'show-big-image-other' )->rawParams( $lang->pipeList( $otherSizes ) )->
+							params( count( $otherSizes ) )->parse()
+						);
+					}
+				} elseif ( $width == 0 && $height == 0 ) {
+					# Some sort of audio file that doesn't have dimensions
+					# Don't output a no hi res message for such a file
+					$msgsmall = '';
+				} else {
+					# Image is small enough to show full size on image page
+					$msgsmall = wfMessage( 'file-nohires' )->parse();
+				}
+
+				$params['width'] = $width;
+				$params['height'] = $height;
+				$thumbnail = $this->displayImg->transform( $params );
+				Linker::processResponsiveImages( $this->displayImg, $thumbnail, $params );
+
+				$anchorclose = Html::rawElement(
+					'div',
+					array( 'class' => 'mw-filepage-resolutioninfo' ),
+					$msgsmall
+				);
+
+				$isMulti = $this->displayImg->isMultipage() && $this->displayImg->pageCount() > 1;
+				if ( $isMulti ) {
+					$out->addModules( 'mediawiki.page.image.pagination' );
+					$out->addHTML( '<table class="multipageimage"><tr><td>' );
+				}
+
+				if ( $thumbnail ) {
+					$options = array(
+						'alt' => $this->displayImg->getTitle()->getPrefixedText(),
+						'file-link' => true,
+					);
+					$out->addHTML( '<div class="fullImageLink" id="file">' .
+						$thumbnail->toHtml( $options ) .
+						$anchorclose . "</div>\n" );
+				}
+
+				if ( $isMulti ) {
+					$count = $this->displayImg->pageCount();
+
+					if ( $page > 1 ) {
+						$label = $out->parse( wfMessage( 'imgmultipageprev' )->text(), false );
+						// on the client side, this link is generated in ajaxifyPageNavigation()
+						// in the mediawiki.page.image.pagination module
+						$link = Linker::linkKnown(
+							$this->getTitle(),
+							$label,
+							array(),
+							array( 'page' => $page - 1 )
+						);
+						$thumb1 = Linker::makeThumbLinkObj(
+							$this->getTitle(),
+							$this->displayImg,
+							$link,
+							$label,
+							'none',
+							array( 'page' => $page - 1 )
+						);
+					} else {
+						$thumb1 = '';
+					}
+
+					if ( $page < $count ) {
+						$label = wfMessage( 'imgmultipagenext' )->text();
+						$link = Linker::linkKnown(
+							$this->getTitle(),
+							$label,
+							array(),
+							array( 'page' => $page + 1 )
+						);
+						$thumb2 = Linker::makeThumbLinkObj(
+							$this->getTitle(),
+							$this->displayImg,
+							$link,
+							$label,
+							'none',
+							array( 'page' => $page + 1 )
+						);
+					} else {
+						$thumb2 = '';
+					}
+
+					global $wgScript;
+
+					$formParams = array(
+						'name' => 'pageselector',
+						'action' => $wgScript,
+					);
+					$options = array();
+					for ( $i = 1; $i <= $count; $i++ ) {
+						$options[] = Xml::option( $lang->formatNum( $i ), $i, $i == $page );
+					}
+					$select = Xml::tags( 'select',
+						array( 'id' => 'pageselector', 'name' => 'page' ),
+						implode( "\n", $options ) );
+
+					$out->addHTML(
+						'</td><td><div class="multipageimagenavbox">' .
+						Xml::openElement( 'form', $formParams ) .
+						Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
+							wfMessage( 'imgmultigoto' )->rawParams( $select )->parse() .
+						Xml::submitButton( wfMessage( 'imgmultigo' )->text() ) .
+						Xml::closeElement( 'form' ) .
+						"<hr />$thumb1\n$thumb2<br style=\"clear: both\" /></div></td></tr></table>"
+					);
+				}
+			} elseif ( $this->displayImg->isSafeFile() ) {
+				# if direct link is allowed but it's not a renderable image, show an icon.
+				$icon = $this->displayImg->iconThumb();
+
+				$out->addHTML( '<div class="fullImageLink" id="file">' .
+					$icon->toHtml( array( 'file-link' => true ) ) .
+					"</div>\n" );
+			}
+
+			$longDesc = wfMessage( 'parentheses', $this->displayImg->getLongDesc() )->text();
+
+			$medialink = "[[Media:$filename|$linktext]]";
+
+			if ( !$this->displayImg->isSafeFile() ) {
+				$warning = wfMessage( 'mediawarning' )->plain();
+				// dirmark is needed here to separate the file name, which
+				// most likely ends in Latin characters, from the description,
+				// which may begin with the file type. In RTL environment
+				// this will get messy.
+				// The dirmark, however, must not be immediately adjacent
+				// to the filename, because it can get copied with it.
+				// See bug 25277.
+				// @codingStandardsIgnoreStart Ignore long line
+				$out->addWikiText( <<<EOT
+<div class="fullMedia"><span class="dangerousLink">{$medialink}</span> $dirmark<span class="fileInfo">$longDesc</span></div>
+<div class="mediaWarning">$warning</div>
+EOT
+				);
+				// @codingStandardsIgnoreEnd
+			} else {
+				$out->addWikiText( <<<EOT
+<div class="fullMedia">{$medialink} {$dirmark}<span class="fileInfo">$longDesc</span>
+</div>
+EOT
+				);
+			}
+
+			$renderLangOptions = $this->displayImg->getAvailableLanguages();
+			if ( count( $renderLangOptions ) >= 1 ) {
+				$currentLanguage = $renderLang;
+				$defaultLang = $this->displayImg->getDefaultRenderLanguage();
+				if ( is_null( $currentLanguage ) ) {
+					$currentLanguage = $defaultLang;
+				}
+				$out->addHtml( $this->doRenderLangOpt( $renderLangOptions, $currentLanguage, $defaultLang ) );
+			}
+
+			// Add cannot animate thumbnail warning
+			if ( !$this->displayImg->canAnimateThumbIfAppropriate() ) {
+				// Include the extension so wiki admins can
+				// customize it on a per file-type basis
+				// (aka say things like use format X instead).
+				// additionally have a specific message for
+				// file-no-thumb-animation-gif
+				$ext = $this->displayImg->getExtension();
+				$noAnimMesg = wfMessageFallback(
+					'file-no-thumb-animation-' . $ext,
+					'file-no-thumb-animation'
+				)->plain();
+
+				$out->addWikiText( <<<EOT
+<div class="mw-noanimatethumb">{$noAnimMesg}</div>
+EOT
+				);
+			}
+
+			if ( !$this->displayImg->isLocal() ) {
+				$this->printSharedImageText();
+			}
+		} else {
+			# Image does not exist
+			if ( !$this->getID() ) {
+				# No article exists either
+				# Show deletion log to be consistent with normal articles
+				LogEventsList::showLogExtract(
+					$out,
+					array( 'delete', 'move' ),
+					$this->getTitle()->getPrefixedText(),
+					'',
+					array( 'lim' => 10,
+						'conds' => array( "log_action != 'revision'" ),
+						'showIfEmpty' => false,
+						'msgKey' => array( 'moveddeleted-notice' )
+					)
+				);
+			}
+
+			if ( $wgEnableUploads && $user->isAllowed( 'upload' ) ) {
+				// Only show an upload link if the user can upload
+				$uploadTitle = SpecialPage::getTitleFor( 'Upload' );
+				$nofile = array(
+					'filepage-nofile-link',
+					$uploadTitle->getFullURL( array( 'wpDestFile' => $this->mPage->getFile()->getName() ) )
+				);
+			} else {
+				$nofile = 'filepage-nofile';
+			}
+			// Note, if there is an image description page, but
+			// no image, then this setRobotPolicy is overridden
+			// by Article::View().
+			$out->setRobotPolicy( 'noindex,nofollow' );
+			$out->wrapWikiMsg( "<div id='mw-imagepage-nofile' class='plainlinks'>\n$1\n</div>", $nofile );
+			if ( !$this->getID() && $wgSend404Code ) {
+				// If there is no image, no shared image, and no description page,
+				// output a 404, to be consistent with articles.
+				$request->response()->header( 'HTTP/1.1 404 Not Found' );
+			}
+		}
+		$out->setFileVersion( $this->displayImg );
+	}
+
+	/**
+	 * Creates an thumbnail of specified size and returns an HTML link to it
+	 * @param array $params Scaler parameters
+	 * @param int $width
+	 * @param int $height
+	 * @return string
+	 */
+	private function makeSizeLink( $params, $width, $height ) {
+		$params['width'] = $width;
+		$params['height'] = $height;
+		$thumbnail = $this->displayImg->transform( $params );
+		if ( $thumbnail && !$thumbnail->isError() ) {
+			return Html::rawElement( 'a', array(
+				'href' => $thumbnail->getUrl(),
+				'class' => 'mw-thumbnail-link'
+				), wfMessage( 'show-big-image-size' )->numParams(
+					$thumbnail->getWidth(), $thumbnail->getHeight()
+				)->parse() );
+		} else {
+			return '';
+		}
+	}
+
+	/**
+	 * Show a notice that the file is from a shared repository
+	 */
+	protected function printSharedImageText() {
+		$out = $this->getContext()->getOutput();
+		$this->loadFile();
+
+		$descUrl = $this->mPage->getFile()->getDescriptionUrl();
+		$descText = $this->mPage->getFile()->getDescriptionText( $this->getContext()->getLanguage() );
+
+		/* Add canonical to head if there is no local page for this shared file */
+		if ( $descUrl && $this->mPage->getID() == 0 ) {
+			$out->setCanonicalUrl( $descUrl );
+		}
+
+		$wrap = "<div class=\"sharedUploadNotice\">\n$1\n</div>\n";
+		$repo = $this->mPage->getFile()->getRepo()->getDisplayName();
+
+		if ( $descUrl && $descText && wfMessage( 'sharedupload-desc-here' )->plain() !== '-' ) {
+			$out->wrapWikiMsg( $wrap, array( 'sharedupload-desc-here', $repo, $descUrl ) );
+		} elseif ( $descUrl && wfMessage( 'sharedupload-desc-there' )->plain() !== '-' ) {
+			$out->wrapWikiMsg( $wrap, array( 'sharedupload-desc-there', $repo, $descUrl ) );
+		} else {
+			$out->wrapWikiMsg( $wrap, array( 'sharedupload', $repo ), ''/*BACKCOMPAT*/ );
+		}
+
+		if ( $descText ) {
+			$this->mExtraDescription = $descText;
+		}
+	}
+
+	public function getUploadUrl() {
+		$this->loadFile();
+		$uploadTitle = SpecialPage::getTitleFor( 'Upload' );
+		return $uploadTitle->getFullURL( array(
+			'wpDestFile' => $this->mPage->getFile()->getName(),
+			'wpForReUpload' => 1
+		) );
+	}
+
+	/**
+	 * Print out the various links at the bottom of the image page, e.g. reupload,
+	 * external editing (and instructions link) etc.
+	 */
+	protected function uploadLinksBox() {
+		global $wgEnableUploads;
+
+		if ( !$wgEnableUploads ) {
+			return;
+		}
+
+		$this->loadFile();
+		if ( !$this->mPage->getFile()->isLocal() ) {
+			return;
+		}
+
+		$out = $this->getContext()->getOutput();
+		$out->addHTML( "<ul>\n" );
+
+		# "Upload a new version of this file" link
+		$canUpload = $this->getTitle()->userCan( 'upload', $this->getContext()->getUser() );
+		if ( $canUpload && UploadBase::userCanReUpload(
+				$this->getContext()->getUser(),
+				$this->mPage->getFile()->name )
+		) {
+			$ulink = Linker::makeExternalLink(
+				$this->getUploadUrl(),
+				wfMessage( 'uploadnewversion-linktext' )->text()
+			);
+			$out->addHTML( "<li id=\"mw-imagepage-reupload-link\">"
+				. "<div class=\"plainlinks\">{$ulink}</div></li>\n" );
+		} else {
+			$out->addHTML( "<li id=\"mw-imagepage-upload-disallowed\">"
+				. $this->getContext()->msg( 'upload-disallowed-here' )->escaped() . "</li>\n" );
+		}
+
+		$out->addHTML( "</ul>\n" );
+	}
+
+	/**
+	 * For overloading
+	 */
+	protected function closeShowImage() {
+	}
+
+	/**
+	 * If the page we've just displayed is in the "Image" namespace,
+	 * we follow it with an upload history of the image and its usage.
+	 */
+	protected function imageHistory() {
+		$this->loadFile();
+		$out = $this->getContext()->getOutput();
+		$pager = new ImageHistoryPseudoPager( $this );
+		$out->addHTML( $pager->getBody() );
+		$out->preventClickjacking( $pager->getPreventClickjacking() );
+
+		$this->mPage->getFile()->resetHistory(); // free db resources
+
+		# Exist check because we don't want to show this on pages where an image
+		# doesn't exist along with the noimage message, that would suck. -ævar
+		if ( $this->mPage->getFile()->exists() ) {
+			$this->uploadLinksBox();
+		}
+	}
+
+	/**
+	 * @param string $target
+	 * @param int $limit
+	 * @return ResultWrapper
+	 */
+	protected function queryImageLinks( $target, $limit ) {
+		$dbr = wfGetDB( DB_SLAVE );
+
+		return $dbr->select(
+			array( 'imagelinks', 'page' ),
+			array( 'page_namespace', 'page_title', 'il_to' ),
+			array( 'il_to' => $target, 'il_from = page_id' ),
+			__METHOD__,
+			array( 'LIMIT' => $limit + 1, 'ORDER BY' => 'il_from', )
+		);
+	}
+
+	protected function imageLinks() {
+		$limit = 100;
+
+		$out = $this->getContext()->getOutput();
+
+		$rows = array();
+		$redirects = array();
+		foreach ( $this->getTitle()->getRedirectsHere( NS_FILE ) as $redir ) {
+			$redirects[$redir->getDBkey()] = array();
+			$rows[] = (object)array(
+				'page_namespace' => NS_FILE,
+				'page_title' => $redir->getDBkey(),
+			);
+		}
+
+		$res = $this->queryImageLinks( $this->getTitle()->getDBkey(), $limit + 1 );
+		foreach ( $res as $row ) {
+			$rows[] = $row;
+		}
+		$count = count( $rows );
+
+		$hasMore = $count > $limit;
+		if ( !$hasMore && count( $redirects ) ) {
+			$res = $this->queryImageLinks( array_keys( $redirects ),
+				$limit - count( $rows ) + 1 );
+			foreach ( $res as $row ) {
+				$redirects[$row->il_to][] = $row;
+				$count++;
+			}
+			$hasMore = ( $res->numRows() + count( $rows ) ) > $limit;
+		}
+
+		if ( $count == 0 ) {
+			$out->wrapWikiMsg(
+				Html::rawElement( 'div',
+					array( 'id' => 'mw-imagepage-nolinkstoimage' ), "\n$1\n" ),
+				'nolinkstoimage'
+			);
+			return;
+		}
+
+		$out->addHTML( "<div id='mw-imagepage-section-linkstoimage'>\n" );
+		if ( !$hasMore ) {
+			$out->addWikiMsg( 'linkstoimage', $count );
+		} else {
+			// More links than the limit. Add a link to [[Special:Whatlinkshere]]
+			$out->addWikiMsg( 'linkstoimage-more',
+				$this->getContext()->getLanguage()->formatNum( $limit ),
+				$this->getTitle()->getPrefixedDBkey()
+			);
+		}
+
+		$out->addHTML(
+			Html::openElement( 'ul',
+				array( 'class' => 'mw-imagepage-linkstoimage' ) ) . "\n"
+		);
+		$count = 0;
+
+		// Sort the list by namespace:title
+		usort( $rows, array( $this, 'compare' ) );
+
+		// Create links for every element
+		$currentCount = 0;
+		foreach ( $rows as $element ) {
+			$currentCount++;
+			if ( $currentCount > $limit ) {
+				break;
+			}
+
+			$query = array();
+			# Add a redirect=no to make redirect pages reachable
+			if ( isset( $redirects[$element->page_title] ) ) {
+				$query['redirect'] = 'no';
+			}
+			$link = Linker::linkKnown(
+				Title::makeTitle( $element->page_namespace, $element->page_title ),
+				null, array(), $query
+			);
+			if ( !isset( $redirects[$element->page_title] ) ) {
+				# No redirects
+				$liContents = $link;
+			} elseif ( count( $redirects[$element->page_title] ) === 0 ) {
+				# Redirect without usages
+				$liContents = wfMessage( 'linkstoimage-redirect' )->rawParams( $link, '' )->parse();
+			} else {
+				# Redirect with usages
+				$li = '';
+				foreach ( $redirects[$element->page_title] as $row ) {
+					$currentCount++;
+					if ( $currentCount > $limit ) {
+						break;
+					}
+
+					$link2 = Linker::linkKnown( Title::makeTitle( $row->page_namespace, $row->page_title ) );
+					$li .= Html::rawElement(
+						'li',
+						array( 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ),
+						$link2
+						) . "\n";
+				}
+
+				$ul = Html::rawElement(
+					'ul',
+					array( 'class' => 'mw-imagepage-redirectstofile' ),
+					$li
+					) . "\n";
+				$liContents = wfMessage( 'linkstoimage-redirect' )->rawParams(
+					$link, $ul )->parse();
+			}
+			$out->addHTML( Html::rawElement(
+					'li',
+					array( 'class' => 'mw-imagepage-linkstoimage-ns' . $element->page_namespace ),
+					$liContents
+				) . "\n"
+			);
+
+		};
+		$out->addHTML( Html::closeElement( 'ul' ) . "\n" );
+		$res->free();
+
+		// Add a links to [[Special:Whatlinkshere]]
+		if ( $count > $limit ) {
+			$out->addWikiMsg( 'morelinkstoimage', $this->getTitle()->getPrefixedDBkey() );
+		}
+		$out->addHTML( Html::closeElement( 'div' ) . "\n" );
+	}
+
+	protected function imageDupes() {
+		$this->loadFile();
+		$out = $this->getContext()->getOutput();
+
+		$dupes = $this->mPage->getDuplicates();
+		if ( count( $dupes ) == 0 ) {
+			return;
+		}
+
+		$out->addHTML( "<div id='mw-imagepage-section-duplicates'>\n" );
+		$out->addWikiMsg( 'duplicatesoffile',
+			$this->getContext()->getLanguage()->formatNum( count( $dupes ) ), $this->getTitle()->getDBkey()
+		);
+		$out->addHTML( "<ul class='mw-imagepage-duplicates'>\n" );
+
+		/**
+		 * @var $file File
+		 */
+		foreach ( $dupes as $file ) {
+			$fromSrc = '';
+			if ( $file->isLocal() ) {
+				$link = Linker::linkKnown( $file->getTitle() );
+			} else {
+				$link = Linker::makeExternalLink( $file->getDescriptionUrl(),
+					$file->getTitle()->getPrefixedText() );
+				$fromSrc = wfMessage( 'shared-repo-from', $file->getRepo()->getDisplayName() )->text();
+			}
+			$out->addHTML( "<li>{$link} {$fromSrc}</li>\n" );
+		}
+		$out->addHTML( "</ul></div>\n" );
+	}
+
+	/**
+	 * Delete the file, or an earlier version of it
+	 */
+	public function delete() {
+		$file = $this->mPage->getFile();
+		if ( !$file->exists() || !$file->isLocal() || $file->getRedirected() ) {
+			// Standard article deletion
+			parent::delete();
+			return;
+		}
+
+		$deleter = new FileDeleteForm( $file );
+		$deleter->execute();
+	}
+
+	/**
+	 * Display an error with a wikitext description
+	 *
+	 * @param string $description
+	 */
+	function showError( $description ) {
+		$out = $this->getContext()->getOutput();
+		$out->setPageTitle( wfMessage( 'internalerror' ) );
+		$out->setRobotPolicy( 'noindex,nofollow' );
+		$out->setArticleRelated( false );
+		$out->enableClientCache( false );
+		$out->addWikiText( $description );
+	}
+
+	/**
+	 * Callback for usort() to do link sorts by (namespace, title)
+	 * Function copied from Title::compare()
+	 *
+	 * @param object $a Object page to compare with
+	 * @param object $b Object page to compare with
+	 * @return int Result of string comparison, or namespace comparison
+	 */
+	protected function compare( $a, $b ) {
+		if ( $a->page_namespace == $b->page_namespace ) {
+			return strcmp( $a->page_title, $b->page_title );
+		} else {
+			return $a->page_namespace - $b->page_namespace;
+		}
+	}
+
+	/**
+	 * Returns the corresponding $wgImageLimits entry for the selected user option
+	 *
+	 * @param User $user
+	 * @param string $optionName Name of a option to check, typically imagesize or thumbsize
+	 * @return array
+	 * @since 1.21
+	 */
+	public function getImageLimitsFromOption( $user, $optionName ) {
+		global $wgImageLimits;
+
+		$option = $user->getIntOption( $optionName );
+		if ( !isset( $wgImageLimits[$option] ) ) {
+			$option = User::getDefaultOption( $optionName );
+		}
+
+		// The user offset might still be incorrect, specially if
+		// $wgImageLimits got changed (see bug #8858).
+		if ( !isset( $wgImageLimits[$option] ) ) {
+			// Default to the first offset in $wgImageLimits
+			$option = 0;
+		}
+
+		return isset( $wgImageLimits[$option] )
+			? $wgImageLimits[$option]
+			: array( 800, 600 ); // if nothing is set, fallback to a hardcoded default
+	}
+
+	/**
+	 * Output a drop-down box for language options for the file
+	 *
+	 * @param array $langChoices Array of string language codes
+	 * @param string $curLang Language code file is being viewed in.
+	 * @param string $defaultLang Language code that image is rendered in by default
+	 * @return string HTML to insert underneath image.
+	 */
+	protected function doRenderLangOpt( array $langChoices, $curLang, $defaultLang ) {
+		global $wgScript;
+		sort( $langChoices );
+		$curLang = wfBCP47( $curLang );
+		$defaultLang = wfBCP47( $defaultLang );
+		$opts = '';
+		$haveCurrentLang = false;
+		$haveDefaultLang = false;
+
+		// We make a list of all the language choices in the file.
+		// Additionally if the default language to render this file
+		// is not included as being in this file (for example, in svgs
+		// usually the fallback content is the english content) also
+		// include a choice for that. Last of all, if we're viewing
+		// the file in a language not on the list, add it as a choice.
+		foreach ( $langChoices as $lang ) {
+			$code = wfBCP47( $lang );
+			$name = Language::fetchLanguageName( $code, $this->getContext()->getLanguage()->getCode() );
+			if ( $name !== '' ) {
+				$display = wfMessage( 'img-lang-opt', $code, $name )->text();
+			} else {
+				$display = $code;
+			}
+			$opts .= "\n" . Xml::option( $display, $code, $curLang === $code );
+			if ( $curLang === $code ) {
+				$haveCurrentLang = true;
+			}
+			if ( $defaultLang === $code ) {
+				$haveDefaultLang = true;
+			}
+		}
+		if ( !$haveDefaultLang ) {
+			// Its hard to know if the content is really in the default language, or
+			// if its just unmarked content that could be in any language.
+			$opts = Xml::option(
+				wfMessage( 'img-lang-default' )->text(),
+				$defaultLang,
+				$defaultLang === $curLang
+			) . $opts;
+		}
+		if ( !$haveCurrentLang && $defaultLang !== $curLang ) {
+			$name = Language::fetchLanguageName( $curLang, $this->getContext()->getLanguage()->getCode() );
+			if ( $name !== '' ) {
+				$display = wfMessage( 'img-lang-opt', $curLang, $name )->text();
+			} else {
+				$display = $curLang;
+			}
+			$opts = Xml::option( $display, $curLang, true ) . $opts;
+		}
+
+		$select = Html::rawElement(
+			'select',
+			array( 'id' => 'mw-imglangselector', 'name' => 'lang' ),
+			$opts
+		);
+		$submit = Xml::submitButton( wfMessage( 'img-lang-go' )->text() );
+
+		$formContents = wfMessage( 'img-lang-info' )->rawParams( $select, $submit )->parse()
+			. Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() );
+
+		$langSelectLine = Html::rawElement( 'div', array( 'id' => 'mw-imglangselector-line' ),
+			Html::rawElement( 'form', array( 'action' => $wgScript ), $formContents )
+		);
+		return $langSelectLine;
+	}
+
+	/**
+	 * Get the width and height to display image at.
+	 *
+	 * @note This method assumes that it is only called if one
+	 *  of the dimensions are bigger than the max, or if the
+	 *  image is vectorized.
+	 *
+	 * @param int $maxWidth Max width to display at
+	 * @param int $maxHeight Max height to display at
+	 * @param int $width Actual width of the image
+	 * @param int $height Actual height of the image
+	 * @throws MWException
+	 * @return array Array (width, height)
+	 */
+	protected function getDisplayWidthHeight( $maxWidth, $maxHeight, $width, $height ) {
+		if ( !$maxWidth || !$maxHeight ) {
+			// should never happen
+			throw new MWException( 'Using a choice from $wgImageLimits that is 0x0' );
+		}
+
+		if ( !$width || !$height ) {
+			return array( 0, 0 );
+		}
+
+		# Calculate the thumbnail size.
+		if ( $width <= $maxWidth && $height <= $maxHeight ) {
+			// Vectorized image, do nothing.
+		} elseif ( $width / $height >= $maxWidth / $maxHeight ) {
+			# The limiting factor is the width, not the height.
+			$height = round( $height * $maxWidth / $width );
+			$width = $maxWidth;
+			# Note that $height <= $maxHeight now.
+		} else {
+			$newwidth = floor( $width * $maxHeight / $height );
+			$height = round( $height * $newwidth / $width );
+			$width = $newwidth;
+			# Note that $height <= $maxHeight now, but might not be identical
+			# because of rounding.
+		}
+		return array( $width, $height );
+	}
+
+	/**
+	 * Get alternative thumbnail sizes.
+	 *
+	 * @note This will only list several alternatives if thumbnails are rendered on 404
+	 * @param int $origWidth Actual width of image
+	 * @param int $origHeight Actual height of image
+	 * @return array An array of [width, height] pairs.
+	 */
+	protected function getThumbSizes( $origWidth, $origHeight ) {
+		global $wgImageLimits;
+		if ( $this->displayImg->getRepo()->canTransformVia404() ) {
+			$thumbSizes = $wgImageLimits;
+			// Also include the full sized resolution in the list, so
+			// that users know they can get it. This will link to the
+			// original file asset if mustRender() === false. In the case
+			// that we mustRender, some users have indicated that they would
+			// find it useful to have the full size image in the rendered
+			// image format.
+			$thumbSizes[] = array( $origWidth, $origHeight );
+		} else {
+			# Creating thumb links triggers thumbnail generation.
+			# Just generate the thumb for the current users prefs.
+			$thumbSizes = array( $this->getImageLimitsFromOption( $this->getContext()->getUser(), 'thumbsize' ) );
+			if ( !$this->displayImg->mustRender() ) {
+				// We can safely include a link to the "full-size" preview,
+				// without actually rendering.
+				$thumbSizes[] = array( $origWidth, $origHeight );
+			}
+		}
+		return $thumbSizes;
+	}
+
+}
+
+/**
+ * Builds the image revision log shown on image pages
+ *
+ * @ingroup Media
+ */
+class ImageHistoryList extends ContextSource {
+
+	/**
+	 * @var Title
+	 */
+	protected $title;
+
+	/**
+	 * @var File
+	 */
+	protected $img;
+
+	/**
+	 * @var ImagePage
+	 */
+	protected $imagePage;
+
+	/**
+	 * @var File
+	 */
+	protected $current;
+
+	protected $repo, $showThumb;
+	protected $preventClickjacking = false;
+
+	/**
+	 * @param ImagePage $imagePage
+	 */
+	public function __construct( $imagePage ) {
+		global $wgShowArchiveThumbnails;
+		$this->current = $imagePage->getFile();
+		$this->img = $imagePage->getDisplayedFile();
+		$this->title = $imagePage->getTitle();
+		$this->imagePage = $imagePage;
+		$this->showThumb = $wgShowArchiveThumbnails && $this->img->canRender();
+		$this->setContext( $imagePage->getContext() );
+	}
+
+	/**
+	 * @return ImagePage
+	 */
+	public function getImagePage() {
+		return $this->imagePage;
+	}
+
+	/**
+	 * @return File
+	 */
+	public function getFile() {
+		return $this->img;
+	}
+
+	/**
+	 * @param string $navLinks
+	 * @return string
+	 */
+	public function beginImageHistoryList( $navLinks = '' ) {
+		return Xml::element( 'h2', array( 'id' => 'filehistory' ), $this->msg( 'filehist' )->text() )
+			. "\n"
+			. "<div id=\"mw-imagepage-section-filehistory\">\n"
+			. $this->msg( 'filehist-help' )->parseAsBlock()
+			. $navLinks . "\n"
+			. Xml::openElement( 'table', array( 'class' => 'wikitable filehistory' ) ) . "\n"
+			. '<tr><td></td>'
+			. ( $this->current->isLocal()
+				&& ( $this->getUser()->isAllowedAny( 'delete', 'deletedhistory' ) ) ? '<td></td>' : '' )
+			. '<th>' . $this->msg( 'filehist-datetime' )->escaped() . '</th>'
+			. ( $this->showThumb ? '<th>' . $this->msg( 'filehist-thumb' )->escaped() . '</th>' : '' )
+			. '<th>' . $this->msg( 'filehist-dimensions' )->escaped() . '</th>'
+			. '<th>' . $this->msg( 'filehist-user' )->escaped() . '</th>'
+			. '<th>' . $this->msg( 'filehist-comment' )->escaped() . '</th>'
+			. "</tr>\n";
+	}
+
+	/**
+	 * @param string $navLinks
+	 * @return string
+	 */
+	public function endImageHistoryList( $navLinks = '' ) {
+		return "</table>\n$navLinks\n</div>\n";
+	}
+
+	/**
+	 * @param bool $iscur
+	 * @param File $file
+	 * @return string
+	 */
+	public function imageHistoryLine( $iscur, $file ) {
+		global $wgContLang;
+
+		$user = $this->getUser();
+		$lang = $this->getLanguage();
+		$timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
+		$img = $iscur ? $file->getName() : $file->getArchiveName();
+		$userId = $file->getUser( 'id' );
+		$userText = $file->getUser( 'text' );
+		$description = $file->getDescription( File::FOR_THIS_USER, $user );
+
+		$local = $this->current->isLocal();
+		$row = $selected = '';
+
+		// Deletion link
+		if ( $local && ( $user->isAllowedAny( 'delete', 'deletedhistory' ) ) ) {
+			$row .= '<td>';
+			# Link to remove from history
+			if ( $user->isAllowed( 'delete' ) ) {
+				$q = array( 'action' => 'delete' );
+				if ( !$iscur ) {
+					$q['oldimage'] = $img;
+				}
+				$row .= Linker::linkKnown(
+					$this->title,
+					$this->msg( $iscur ? 'filehist-deleteall' : 'filehist-deleteone' )->escaped(),
+					array(), $q
+				);
+			}
+			# Link to hide content. Don't show useless link to people who cannot hide revisions.
+			$canHide = $user->isAllowed( 'deleterevision' );
+			if ( $canHide || ( $user->isAllowed( 'deletedhistory' ) && $file->getVisibility() ) ) {
+				if ( $user->isAllowed( 'delete' ) ) {
+					$row .= '<br />';
+				}
+				// If file is top revision or locked from this user, don't link
+				if ( $iscur || !$file->userCan( File::DELETED_RESTRICTED, $user ) ) {
+					$del = Linker::revDeleteLinkDisabled( $canHide );
+				} else {
+					list( $ts, ) = explode( '!', $img, 2 );
+					$query = array(
+						'type' => 'oldimage',
+						'target' => $this->title->getPrefixedText(),
+						'ids' => $ts,
+					);
+					$del = Linker::revDeleteLink( $query,
+						$file->isDeleted( File::DELETED_RESTRICTED ), $canHide );
+				}
+				$row .= $del;
+			}
+			$row .= '</td>';
+		}
+
+		// Reversion link/current indicator
+		$row .= '<td>';
+		if ( $iscur ) {
+			$row .= $this->msg( 'filehist-current' )->escaped();
+		} elseif ( $local && $this->title->quickUserCan( 'edit', $user )
+			&& $this->title->quickUserCan( 'upload', $user )
+		) {
+			if ( $file->isDeleted( File::DELETED_FILE ) ) {
+				$row .= $this->msg( 'filehist-revert' )->escaped();
+			} else {
+				$row .= Linker::linkKnown(
+					$this->title,
+					$this->msg( 'filehist-revert' )->escaped(),
+					array(),
+					array(
+						'action' => 'revert',
+						'oldimage' => $img,
+						'wpEditToken' => $user->getEditToken( $img )
+					)
+				);
+			}
+		}
+		$row .= '</td>';
+
+		// Date/time and image link
+		if ( $file->getTimestamp() === $this->img->getTimestamp() ) {
+			$selected = "class='filehistory-selected'";
+		}
+		$row .= "<td $selected style='white-space: nowrap;'>";
+		if ( !$file->userCan( File::DELETED_FILE, $user ) ) {
+			# Don't link to unviewable files
+			$row .= '<span class="history-deleted">'
+				. $lang->userTimeAndDate( $timestamp, $user ) . '</span>';
+		} elseif ( $file->isDeleted( File::DELETED_FILE ) ) {
+			if ( $local ) {
+				$this->preventClickjacking();
+				$revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
+				# Make a link to review the image
+				$url = Linker::linkKnown(
+					$revdel,
+					$lang->userTimeAndDate( $timestamp, $user ),
+					array(),
+					array(
+						'target' => $this->title->getPrefixedText(),
+						'file' => $img,
+						'token' => $user->getEditToken( $img )
+					)
+				);
+			} else {
+				$url = $lang->userTimeAndDate( $timestamp, $user );
+			}
+			$row .= '<span class="history-deleted">' . $url . '</span>';
+		} elseif ( !$file->exists() ) {
+			$row .= '<span class="mw-file-missing">'
+				. $lang->userTimeAndDate( $timestamp, $user ) . '</span>';
+		} else {
+			$url = $iscur ? $this->current->getUrl() : $this->current->getArchiveUrl( $img );
+			$row .= Xml::element(
+				'a',
+				array( 'href' => $url ),
+				$lang->userTimeAndDate( $timestamp, $user )
+			);
+		}
+		$row .= "</td>";
+
+		// Thumbnail
+		if ( $this->showThumb ) {
+			$row .= '<td>' . $this->getThumbForLine( $file ) . '</td>';
+		}
+
+		// Image dimensions + size
+		$row .= '<td>';
+		$row .= htmlspecialchars( $file->getDimensionsString() );
+		$row .= $this->msg( 'word-separator' )->escaped();
+		$row .= '<span style="white-space: nowrap;">';
+		$row .= $this->msg( 'parentheses' )->sizeParams( $file->getSize() )->escaped();
+		$row .= '</span>';
+		$row .= '</td>';
+
+		// Uploading user
+		$row .= '<td>';
+		// Hide deleted usernames
+		if ( $file->isDeleted( File::DELETED_USER ) ) {
+			$row .= '<span class="history-deleted">'
+				. $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
+		} else {
+			if ( $local ) {
+				$row .= Linker::userLink( $userId, $userText );
+				$row .= $this->msg( 'word-separator' )->escaped();
+				$row .= '<span style="white-space: nowrap;">';
+				$row .= Linker::userToolLinks( $userId, $userText );
+				$row .= '</span>';
+			} else {
+				$row .= htmlspecialchars( $userText );
+			}
+		}
+		$row .= '</td>';
+
+		// Don't show deleted descriptions
+		if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
+			$row .= '<td><span class="history-deleted">' .
+				$this->msg( 'rev-deleted-comment' )->escaped() . '</span></td>';
+		} else {
+			$row .= '<td dir="' . $wgContLang->getDir() . '">' .
+				Linker::formatComment( $description, $this->title ) . '</td>';
+		}
+
+		$rowClass = null;
+		wfRunHooks( 'ImagePageFileHistoryLine', array( $this, $file, &$row, &$rowClass ) );
+		$classAttr = $rowClass ? " class='$rowClass'" : '';
+
+		return "<tr{$classAttr}>{$row}</tr>\n";
+	}
+
+	/**
+	 * @param File $file
+	 * @return string
+	 */
+	protected function getThumbForLine( $file ) {
+		$lang = $this->getLanguage();
+		$user = $this->getUser();
+		if ( $file->allowInlineDisplay() && $file->userCan( File::DELETED_FILE, $user )
+			&& !$file->isDeleted( File::DELETED_FILE )
+		) {
+			$params = array(
+				'width' => '120',
+				'height' => '120',
+			);
+			$timestamp = wfTimestamp( TS_MW, $file->getTimestamp() );
+
+			$thumbnail = $file->transform( $params );
+			$options = array(
+				'alt' => $this->msg( 'filehist-thumbtext',
+					$lang->userTimeAndDate( $timestamp, $user ),
+					$lang->userDate( $timestamp, $user ),
+					$lang->userTime( $timestamp, $user ) )->text(),
+				'file-link' => true,
+			);
+
+			if ( !$thumbnail ) {
+				return $this->msg( 'filehist-nothumb' )->escaped();
+			}
+
+			return $thumbnail->toHtml( $options );
+		} else {
+			return $this->msg( 'filehist-nothumb' )->escaped();
+		}
+	}
+
+	/**
+	 * @param bool $enable
+	 */
+	protected function preventClickjacking( $enable = true ) {
+		$this->preventClickjacking = $enable;
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function getPreventClickjacking() {
+		return $this->preventClickjacking;
+	}
+}
+
+class ImageHistoryPseudoPager extends ReverseChronologicalPager {
+	protected $preventClickjacking = false;
+
+	/**
+	 * @var File
+	 */
+	protected $mImg;
+
+	/**
+	 * @var Title
+	 */
+	protected $mTitle;
+
+	/**
+	 * @param ImagePage $imagePage
+	 */
+	function __construct( $imagePage ) {
+		parent::__construct( $imagePage->getContext() );
+		$this->mImagePage = $imagePage;
+		$this->mTitle = clone ( $imagePage->getTitle() );
+		$this->mTitle->setFragment( '#filehistory' );
+		$this->mImg = null;
+		$this->mHist = array();
+		$this->mRange = array( 0, 0 ); // display range
+	}
+
+	/**
+	 * @return Title
+	 */
+	function getTitle() {
+		return $this->mTitle;
+	}
+
+	function getQueryInfo() {
+		return false;
+	}
+
+	/**
+	 * @return string
+	 */
+	function getIndexField() {
+		return '';
+	}
+
+	/**
+	 * @param object $row
+	 * @return string
+	 */
+	function formatRow( $row ) {
+		return '';
+	}
+
+	/**
+	 * @return string
+	 */
+	function getBody() {
+		$s = '';
+		$this->doQuery();
+		if ( count( $this->mHist ) ) {
+			$list = new ImageHistoryList( $this->mImagePage );
+			# Generate prev/next links
+			$navLink = $this->getNavigationBar();
+			$s = $list->beginImageHistoryList( $navLink );
+			// Skip rows there just for paging links
+			for ( $i = $this->mRange[0]; $i <= $this->mRange[1]; $i++ ) {
+				$file = $this->mHist[$i];
+				$s .= $list->imageHistoryLine( !$file->isOld(), $file );
+			}
+			$s .= $list->endImageHistoryList( $navLink );
+
+			if ( $list->getPreventClickjacking() ) {
+				$this->preventClickjacking();
+			}
+		}
+		return $s;
+	}
+
+	function doQuery() {
+		if ( $this->mQueryDone ) {
+			return;
+		}
+		$this->mImg = $this->mImagePage->getFile(); // ensure loading
+		if ( !$this->mImg->exists() ) {
+			return;
+		}
+		$queryLimit = $this->mLimit + 1; // limit plus extra row
+		if ( $this->mIsBackwards ) {
+			// Fetch the file history
+			$this->mHist = $this->mImg->getHistory( $queryLimit, null, $this->mOffset, false );
+			// The current rev may not meet the offset/limit
+			$numRows = count( $this->mHist );
+			if ( $numRows <= $this->mLimit && $this->mImg->getTimestamp() > $this->mOffset ) {
+				$this->mHist = array_merge( array( $this->mImg ), $this->mHist );
+			}
+		} else {
+			// The current rev may not meet the offset
+			if ( !$this->mOffset || $this->mImg->getTimestamp() < $this->mOffset ) {
+				$this->mHist[] = $this->mImg;
+			}
+			// Old image versions (fetch extra row for nav links)
+			$oiLimit = count( $this->mHist ) ? $this->mLimit : $this->mLimit + 1;
+			// Fetch the file history
+			$this->mHist = array_merge( $this->mHist,
+				$this->mImg->getHistory( $oiLimit, $this->mOffset, null, false ) );
+		}
+		$numRows = count( $this->mHist ); // Total number of query results
+		if ( $numRows ) {
+			# Index value of top item in the list
+			$firstIndex = $this->mIsBackwards ?
+				$this->mHist[$numRows - 1]->getTimestamp() : $this->mHist[0]->getTimestamp();
+			# Discard the extra result row if there is one
+			if ( $numRows > $this->mLimit && $numRows > 1 ) {
+				if ( $this->mIsBackwards ) {
+					# Index value of item past the index
+					$this->mPastTheEndIndex = $this->mHist[0]->getTimestamp();
+					# Index value of bottom item in the list
+					$lastIndex = $this->mHist[1]->getTimestamp();
+					# Display range
+					$this->mRange = array( 1, $numRows - 1 );
+				} else {
+					# Index value of item past the index
+					$this->mPastTheEndIndex = $this->mHist[$numRows - 1]->getTimestamp();
+					# Index value of bottom item in the list
+					$lastIndex = $this->mHist[$numRows - 2]->getTimestamp();
+					# Display range
+					$this->mRange = array( 0, $numRows - 2 );
+				}
+			} else {
+				# Setting indexes to an empty string means that they will be
+				# omitted if they would otherwise appear in URLs. It just so
+				# happens that this  is the right thing to do in the standard
+				# UI, in all the relevant cases.
+				$this->mPastTheEndIndex = '';
+				# Index value of bottom item in the list
+				$lastIndex = $this->mIsBackwards ?
+					$this->mHist[0]->getTimestamp() : $this->mHist[$numRows - 1]->getTimestamp();
+				# Display range
+				$this->mRange = array( 0, $numRows - 1 );
+			}
+		} else {
+			$firstIndex = '';
+			$lastIndex = '';
+			$this->mPastTheEndIndex = '';
+		}
+		if ( $this->mIsBackwards ) {
+			$this->mIsFirst = ( $numRows < $queryLimit );
+			$this->mIsLast = ( $this->mOffset == '' );
+			$this->mLastShown = $firstIndex;
+			$this->mFirstShown = $lastIndex;
+		} else {
+			$this->mIsFirst = ( $this->mOffset == '' );
+			$this->mIsLast = ( $numRows < $queryLimit );
+			$this->mLastShown = $lastIndex;
+			$this->mFirstShown = $firstIndex;
+		}
+		$this->mQueryDone = true;
+	}
+
+	/**
+	 * @param bool $enable
+	 */
+	protected function preventClickjacking( $enable = true ) {
+		$this->preventClickjacking = $enable;
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function getPreventClickjacking() {
+		return $this->preventClickjacking;
+	}
+
+}