history() to print the * history. * */ class HistoryPage extends ContextSource { const DIR_PREV = 0; const DIR_NEXT = 1; /** Contains the Page object. Passed on construction. */ protected $article; /** * Construct a new HistoryPage. * * @param $article Article */ function __construct( Page $page, IContextSource $context ) { $this->article = $page; $this->context = clone $context; // don't clobber the main context $this->context->setTitle( $page->getTitle() ); // must match $this->preCacheMessages(); } /** * Get the Article object we are working on. * @return Page */ public function getArticle() { return $this->article; } /** * As we use the same small set of messages in various methods and that * they are called often, we call them once and save them in $this->message */ private function preCacheMessages() { // Precache various messages if ( !isset( $this->message ) ) { $msgs = array( 'cur', 'last', 'pipe-separator' ); foreach ( $msgs as $msg ) { $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) ); } } } /** * Print the history page for an article. * @return nothing */ function history() { global $wgScript, $wgUseFileCache; $out = $this->getOutput(); $request = $this->getRequest(); /** * Allow client caching. */ if ( $out->checkLastModified( $this->article->getTouched() ) ) { return; // Client cache fresh and headers sent, nothing more to do. } wfProfileIn( __METHOD__ ); # Fill in the file cache if not set already if ( $wgUseFileCache && HTMLFileCache::useFileCache( $this->getContext() ) ) { $cache = HTMLFileCache::newFromTitle( $this->getTitle(), 'history' ); if ( !$cache->isCacheGood( /* Assume up to date */ ) ) { ob_start( array( &$cache, 'saveToFileCache' ) ); } } // Setup page variables. $out->setPageTitle( wfMsg( 'history-title', $this->getTitle()->getPrefixedText() ) ); $out->setPageTitleActionText( wfMsg( 'history_short' ) ); $out->setArticleFlag( false ); $out->setArticleRelated( true ); $out->setRobotPolicy( 'noindex,nofollow' ); $out->setFeedAppendQuery( 'action=history' ); $out->addModules( array( 'mediawiki.legacy.history', 'mediawiki.action.history' ) ); // Creation of a subtitle link pointing to [[Special:Log]] $logPage = SpecialPage::getTitleFor( 'Log' ); $logLink = Linker::linkKnown( $logPage, wfMsgHtml( 'viewpagelogs' ), array(), array( 'page' => $this->getTitle()->getPrefixedText() ) ); $out->setSubtitle( $logLink ); // Handle atom/RSS feeds. $feedType = $request->getVal( 'feed' ); if ( $feedType ) { wfProfileOut( __METHOD__ ); return $this->feed( $feedType ); } // Fail nicely if article doesn't exist. if ( !$this->getTitle()->exists() ) { $out->addWikiMsg( 'nohistory' ); # show deletion/move log if there is an entry LogEventsList::showLogExtract( $out, array( 'delete', 'move' ), $this->getTitle(), '', array( 'lim' => 10, 'conds' => array( "log_action != 'revision'" ), 'showIfEmpty' => false, 'msgKey' => array( 'moveddeleted-notice' ) ) ); wfProfileOut( __METHOD__ ); return; } /** * Add date selector to quickly get to a certain time */ $year = $request->getInt( 'year' ); $month = $request->getInt( 'month' ); $tagFilter = $request->getVal( 'tagfilter' ); $tagSelector = ChangeTags::buildTagFilterSelector( $tagFilter ); /** * Option to show only revisions that have been (partially) hidden via RevisionDelete */ if ( $request->getBool( 'deleted' ) ) { $conds = array( "rev_deleted != '0'" ); } else { $conds = array(); } $checkDeleted = Xml::checkLabel( wfMsg( 'history-show-deleted' ), 'deleted', 'mw-show-deleted-only', $request->getBool( 'deleted' ) ) . "\n"; // Add the general form $action = htmlspecialchars( $wgScript ); $out->addHTML( "
' ); wfRunHooks( 'PageHistoryBeforeList', array( &$this->article ) ); // Create and output the list. $pager = new HistoryPager( $this, $year, $month, $tagFilter, $conds ); $out->addHTML( $pager->getNavigationBar() . $pager->getBody() . $pager->getNavigationBar() ); $out->preventClickjacking( $pager->getPreventClickjacking() ); wfProfileOut( __METHOD__ ); } /** * Fetch an array of revisions, specified by a given limit, offset and * direction. This is now only used by the feeds. It was previously * used by the main UI but that's now handled by the pager. * * @param $limit Integer: the limit number of revisions to get * @param $offset Integer * @param $direction Integer: either HistoryPage::DIR_PREV or HistoryPage::DIR_NEXT * @return ResultWrapper */ function fetchRevisions( $limit, $offset, $direction ) { $dbr = wfGetDB( DB_SLAVE ); if ( $direction == HistoryPage::DIR_PREV ) { list( $dirs, $oper ) = array( "ASC", ">=" ); } else { /* $direction == HistoryPage::DIR_NEXT */ list( $dirs, $oper ) = array( "DESC", "<=" ); } if ( $offset ) { $offsets = array( "rev_timestamp $oper '$offset'" ); } else { $offsets = array(); } $page_id = $this->getTitle()->getArticleID(); return $dbr->select( 'revision', Revision::selectFields(), array_merge( array( "rev_page=$page_id" ), $offsets ), __METHOD__, array( 'ORDER BY' => "rev_timestamp $dirs", 'USE INDEX' => 'page_timestamp', 'LIMIT' => $limit ) ); } /** * Output a subscription feed listing recent edits to this page. * * @param $type String: feed type */ function feed( $type ) { global $wgFeedClasses, $wgFeedLimit; if ( !FeedUtils::checkFeedOutput( $type ) ) { return; } $request = $this->getRequest(); $feed = new $wgFeedClasses[$type]( $this->getTitle()->getPrefixedText() . ' - ' . wfMsgForContent( 'history-feed-title' ), wfMsgForContent( 'history-feed-description' ), $this->getTitle()->getFullUrl( 'action=history' ) ); // Get a limit on number of feed entries. Provide a sane default // of 10 if none is defined (but limit to $wgFeedLimit max) $limit = $request->getInt( 'limit', 10 ); if ( $limit > $wgFeedLimit || $limit < 1 ) { $limit = 10; } $items = $this->fetchRevisions( $limit, 0, HistoryPage::DIR_NEXT ); // Generate feed elements enclosed between header and footer. $feed->outHeader(); if ( $items ) { foreach ( $items as $row ) { $feed->outItem( $this->feedItem( $row ) ); } } else { $feed->outItem( $this->feedEmpty() ); } $feed->outFooter(); } function feedEmpty() { return new FeedItem( wfMsgForContent( 'nohistory' ), $this->getOutput()->parse( wfMsgForContent( 'history-feed-empty' ) ), $this->getTitle()->getFullUrl(), wfTimestamp( TS_MW ), '', $this->getTitle()->getTalkPage()->getFullUrl() ); } /** * Generate a FeedItem object from a given revision table row * Borrows Recent Changes' feed generation functions for formatting; * includes a diff to the previous revision (if any). * * @param $row Object: database row * @return FeedItem */ function feedItem( $row ) { $rev = new Revision( $row ); $rev->setTitle( $this->getTitle() ); $text = FeedUtils::formatDiffRow( $this->getTitle(), $this->getTitle()->getPreviousRevisionID( $rev->getId() ), $rev->getId(), $rev->getTimestamp(), $rev->getComment() ); if ( $rev->getComment() == '' ) { global $wgContLang; $title = wfMsgForContent( 'history-feed-item-nocomment', $rev->getUserText(), $wgContLang->timeanddate( $rev->getTimestamp() ), $wgContLang->date( $rev->getTimestamp() ), $wgContLang->time( $rev->getTimestamp() ) ); } else { $title = $rev->getUserText() . wfMsgForContent( 'colon-separator' ) . FeedItem::stripComment( $rev->getComment() ); } return new FeedItem( $title, $text, $this->getTitle()->getFullUrl( 'diff=' . $rev->getId() . '&oldid=prev' ), $rev->getTimestamp(), $rev->getUserText(), $this->getTitle()->getTalkPage()->getFullUrl() ); } } /** * @ingroup Pager */ class HistoryPager extends ReverseChronologicalPager { public $lastRow = false, $counter, $historyPage, $title, $buttons, $conds; protected $oldIdChecked; protected $preventClickjacking = false; function __construct( $historyPage, $year = '', $month = '', $tagFilter = '', $conds = array() ) { parent::__construct(); $this->historyPage = $historyPage; $this->title = $this->historyPage->getTitle(); $this->tagFilter = $tagFilter; $this->getDateCond( $year, $month ); $this->conds = $conds; } // For hook compatibility... function getArticle() { return $this->historyPage->getArticle(); } function getTitle() { return $this->title; } function getSqlComment() { if ( $this->conds ) { return 'history page filtered'; // potentially slow, see CR r58153 } else { return 'history page unfiltered'; } } function getQueryInfo() { $queryInfo = array( 'tables' => array( 'revision', 'user' ), 'fields' => array_merge( Revision::selectFields(), Revision::selectUserFields() ), 'conds' => array_merge( array( 'rev_page' => $this->title->getArticleID() ), $this->conds ), 'options' => array( 'USE INDEX' => array( 'revision' => 'page_timestamp' ) ), 'join_conds' => array( 'user' => array( 'LEFT JOIN', 'rev_user != 0 AND user_id = rev_user' ), 'tag_summary' => array( 'LEFT JOIN', 'ts_rev_id=rev_id' ) ), ); ChangeTags::modifyDisplayQuery( $queryInfo['tables'], $queryInfo['fields'], $queryInfo['conds'], $queryInfo['join_conds'], $queryInfo['options'], $this->tagFilter ); wfRunHooks( 'PageHistoryPager::getQueryInfo', array( &$this, &$queryInfo ) ); return $queryInfo; } function getIndexField() { return 'rev_timestamp'; } function formatRow( $row ) { if ( $this->lastRow ) { $latest = ( $this->counter == 1 && $this->mIsFirst ); $firstInList = $this->counter == 1; $this->counter++; $s = $this->historyLine( $this->lastRow, $row, $this->title->getNotificationTimestamp(), $latest, $firstInList ); } else { $s = ''; } $this->lastRow = $row; return $s; } function doBatchLookups() { # Do a link batch query $this->mResult->seek( 0 ); $batch = new LinkBatch(); # Give some pointers to make (last) links foreach ( $this->mResult as $row ) { $batch->addObj( Title::makeTitleSafe( NS_USER, $row->user_name ) ); $batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_name ) ); } $batch->execute(); $this->mResult->seek( 0 ); } /** * Creates begin of history list with a submit button * * @return string HTML output */ function getStartBody() { global $wgScript, $wgUser, $wgOut; $this->lastRow = false; $this->counter = 1; $this->oldIdChecked = 0; $wgOut->wrapWikiMsg( "