ImagePage.php
251b345151a1master

ImagePage.php
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			<?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;
			Hooks::run( '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( $this->getContext() );
			$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 = $this->getContext()->msg( 'shareddescriptionfollows' );
			if ( !$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' ),
			$this->getContext()->msg( '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 = '';
			Hooks::run( 'ImagePageAfterImageLinks', array( $this, &$html ) );
			if ( $html ) {
			$out->addHTML( $html );
			}

			if ( $showmeta ) {
			$out->addHTML( Xml::element(
			'h2',
			array( 'id' => 'metadata' ),
			$this->getContext()->msg( '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">' . $this->getContext()->msg( 'file-anchor-link' )->escaped() . '</a></li>',
			'<li><a href="#filehistory">' . $this->getContext()->msg( 'filehist' )->escaped() . '</a></li>',
			'<li><a href="#filelinks">' . $this->getContext()->msg( 'imagelinks' )->escaped() . '</a></li>',
			);

			Hooks::run( 'ImagePageShowTOC', array( $this, &$r ) );

			if ( $metadata ) {
			$r[] = '<li><a href="#metadata">' . $this->getContext()->msg( 'metadata' )->escaped() . '</a></li>';
			}

			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 .= $this->getContext()->msg( '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;

			Hooks::run( 'ImageOpenShowImageInlineBefore', array( &$this, &$out ) );

			if ( $this->displayImg->allowInlineDisplay() ) {
			# image
			# "Download high res version" link below the image
			# $msgsize = $this->getContext()->msg( '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 = $this->getContext()->msg( '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 .= $this->getContext()->msg( 'show-big-image-preview' )->
			rawParams( $sizeLinkBigImagePreview )->
			parse();
			}
			if ( count( $otherSizes ) ) {
			$msgsmall .= ' ' .
			Html::rawElement( 'span', array( 'class' => 'mw-filepage-other-resolutions' ),
			$this->getContext()->msg( '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 = $this->getContext()->msg( '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( $this->getContext()->msg( '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 = $this->getContext()->msg( '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() ) .
			$this->getContext()->msg( 'imgmultigoto' )->rawParams( $select )->parse() .
			Xml::submitButton( $this->getContext()->msg( 'imgmultigo' )->text() ) .
			Xml::closeElement( 'form' ) .
			"<hr />$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 = $this->getContext()->msg( 'parentheses', $this->displayImg->getLongDesc() )->text();

			$handler = $this->displayImg->getHandler();

			// If this is a filetype with potential issues, warn the user.
			if ( $handler ) {
			$warningConfig = $handler->getWarningConfig( $this->displayImg );

			if ( $warningConfig !== null ) {
			// The warning will be displayed via CSS and JavaScript.
			// We just need to tell the client side what message to use.
			$output = $this->getContext()->getOutput();
			$output->addJsConfigVars( 'wgFileWarning', $warningConfig );
			$output->addModules( $warningConfig['module'] );
			$output->addModules( 'mediawiki.filewarning' );
			}
			}

			$medialink = "[[Media:$filename\|$linktext]]";

			if ( !$this->displayImg->isSafeFile() ) {
			$warning = $this->getContext()->msg( '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'
			), $this->getContext()->msg( '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 && $this->getContext()->msg( 'sharedupload-desc-here' )->plain() !== '-' ) {
			$out->wrapWikiMsg( $wrap, array( 'sharedupload-desc-here', $repo, $descUrl ) );
			} elseif ( $descUrl && $this->getContext()->msg( '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(),
			$this->getContext()->msg( '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 = $this->getContext()->msg( '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 = $this->getContext()->msg( '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 = $this->getContext()->msg( '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( $this->getContext()->msg( '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 = $this->getContext()->msg( '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(
			$this->getContext()->msg( 'img-lang-default' )->text(),
			$defaultLang,
			$defaultLang === $curLang
			) . $opts;
			}
			if ( !$haveCurrentLang && $defaultLang !== $curLang ) {
			$name = Language::fetchLanguageName( $curLang, $this->getContext()->getLanguage()->getCode() );
			if ( $name !== '' ) {
			$display = $this->getContext()->msg( '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( $this->getContext()->msg( 'img-lang-go' )->text() );

			$formContents = $this->getContext()->msg( '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><th></th>'
			. ( $this->current->isLocal()
			&& ( $this->getUser()->isAllowedAny( 'delete', 'deletedhistory' ) ) ? '<th></th>' : '' )
			. '<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 .= '<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;
			Hooks::run( '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;
			}

			}

mediawiki/includes/page/ImagePage.php251b345151a1master

ImagePage.phpView Options

mediawiki/includes/page/ImagePage.php
251b345151a1master

ImagePage.php
View Options