+++ /dev/null
-<?php
-/**
- * Page history
- *
- * Split off from Article.php and Skin.php, 2003-12-22
- * @file
- */
-
-/**
- * This class handles printing the history page for an article. In order to
- * be efficient, it uses timestamps rather than offsets for paging, to avoid
- * costly LIMIT,offset queries.
- *
- * Construct it by passing in an Article, and call $h->history() to print the
- * history.
- *
- */
-class PageHistory {
- const DIR_PREV = 0;
- const DIR_NEXT = 1;
-
- var $mArticle, $mTitle, $mSkin;
- var $lastdate;
- var $linesonpage;
- var $mLatestId = null;
-
- /**
- * Construct a new PageHistory.
- *
- * @param Article $article
- * @returns nothing
- */
- function __construct( $article ) {
- global $wgUser;
- $this->mArticle =& $article;
- $this->mTitle =& $article->mTitle;
- $this->mSkin = $wgUser->getSkin();
- $this->preCacheMessages();
- }
-
- function getArticle() {
- return $this->mArticle;
- }
-
- function getTitle() {
- return $this->mTitle;
- }
-
- /**
- * 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
- */
- function preCacheMessages() {
- // Precache various messages
- if( !isset( $this->message ) ) {
- foreach( explode(' ', 'cur last rev-delundel' ) as $msg ) {
- $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
- }
- }
- }
-
- /**
- * Print the history page for an article.
- *
- * @returns nothing
- */
- function history() {
- global $wgOut, $wgRequest, $wgTitle, $wgScript;
-
- /*
- * Allow client caching.
- */
- if( $wgOut->checkLastModified( $this->mArticle->getTouched() ) )
- return; // Client cache fresh and headers sent, nothing more to do.
-
- wfProfileIn( __METHOD__ );
-
- /*
- * Setup page variables.
- */
- $wgOut->setPageTitle( wfMsg( 'history-title', $this->mTitle->getPrefixedText() ) );
- $wgOut->setPageTitleActionText( wfMsg( 'history_short' ) );
- $wgOut->setArticleFlag( false );
- $wgOut->setArticleRelated( true );
- $wgOut->setRobotPolicy( 'noindex,nofollow' );
- $wgOut->setSyndicated( true );
- $wgOut->setFeedAppendQuery( 'action=history' );
- $wgOut->addScriptFile( 'history.js' );
-
- $logPage = SpecialPage::getTitleFor( 'Log' );
- $logLink = $this->mSkin->makeKnownLinkObj( $logPage, wfMsgHtml( 'viewpagelogs' ),
- 'page=' . $this->mTitle->getPrefixedUrl() );
- $wgOut->setSubtitle( $logLink );
-
- $feedType = $wgRequest->getVal( 'feed' );
- if( $feedType ) {
- wfProfileOut( __METHOD__ );
- return $this->feed( $feedType );
- }
-
- /*
- * Fail if article doesn't exist.
- */
- if( !$this->mTitle->exists() ) {
- $wgOut->addWikiMsg( 'nohistory' );
- wfProfileOut( __METHOD__ );
- return;
- }
-
- /**
- * Add date selector to quickly get to a certain time
- */
- $year = $wgRequest->getInt( 'year' );
- $month = $wgRequest->getInt( 'month' );
-
- $action = htmlspecialchars( $wgScript );
- $wgOut->addHTML(
- "<form action=\"$action\" method=\"get\" id=\"mw-history-searchform\">" .
- Xml::fieldset( wfMsg( 'history-fieldset-title' ), false, array( 'id' => 'mw-history-search' ) ) .
- Xml::hidden( 'title', $this->mTitle->getPrefixedDBKey() ) . "\n" .
- Xml::hidden( 'action', 'history' ) . "\n" .
- $this->getDateMenu( $year, $month ) . ' ' .
- Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "\n" .
- '</fieldset></form>'
- );
-
- wfRunHooks( 'PageHistoryBeforeList', array( &$this->mArticle ) );
-
- /**
- * Do the list
- */
- $pager = new PageHistoryPager( $this, $year, $month );
- $this->linesonpage = $pager->getNumRows();
- $wgOut->addHTML(
- $pager->getNavigationBar() .
- $this->beginHistoryList() .
- $pager->getBody() .
- $this->endHistoryList() .
- $pager->getNavigationBar()
- );
-
- wfProfileOut( __METHOD__ );
- }
-
- /**
- * @return string Formatted HTML
- * @param int $year
- * @param int $month
- */
- private function getDateMenu( $year, $month ) {
- # Offset overrides year/month selection
- if( $month && $month !== -1 ) {
- $encMonth = intval( $month );
- } else {
- $encMonth = '';
- }
- if( $year ) {
- $encYear = intval( $year );
- } else if( $encMonth ) {
- $thisMonth = intval( gmdate( 'n' ) );
- $thisYear = intval( gmdate( 'Y' ) );
- if( intval($encMonth) > $thisMonth ) {
- $thisYear--;
- }
- $encYear = $thisYear;
- } else {
- $encYear = '';
- }
- return Xml::label( wfMsg( 'year' ), 'year' ) . ' '.
- Xml::input( 'year', 4, $encYear, array('id' => 'year', 'maxlength' => 4) ) .
- ' '.
- Xml::label( wfMsg( 'month' ), 'month' ) . ' '.
- Xml::monthSelector( $encMonth, -1 );
- }
-
- /**
- * Creates begin of history list with a submit button
- *
- * @return string HTML output
- */
- function beginHistoryList() {
- global $wgTitle, $wgScript, $wgEnableHtmlDiff;
- $this->lastdate = '';
- $s = wfMsgExt( 'histlegend', array( 'parse') );
- $s .= Xml::openElement( 'form', array( 'action' => $wgScript, 'id' => 'mw-history-compare' ) );
- $s .= Xml::hidden( 'title', $wgTitle->getPrefixedDbKey() );
- if( $wgEnableHtmlDiff ) {
- $s .= $this->submitButton( wfMsg( 'visualcomparison'),
- array(
- 'name' => 'htmldiff',
- 'class' => 'historysubmit',
- 'accesskey' => wfMsg( 'accesskey-visualcomparison' ),
- 'title' => wfMsg( 'tooltip-compareselectedversions' ),
- )
- );
- $s .= $this->submitButton( wfMsg( 'wikicodecomparison'),
- array(
- 'class' => 'historysubmit',
- 'accesskey' => wfMsg( 'accesskey-compareselectedversions' ),
- 'title' => wfMsg( 'tooltip-compareselectedversions' ),
- )
- );
- } else {
- $s .= $this->submitButton( wfMsg( 'compareselectedversions'),
- array(
- 'class' => 'historysubmit',
- 'accesskey' => wfMsg( 'accesskey-compareselectedversions' ),
- 'title' => wfMsg( 'tooltip-compareselectedversions' ),
- )
- );
- }
- $s .= '<ul id="pagehistory">' . "\n";
- return $s;
- }
-
- /**
- * Creates end of history list with a submit button
- *
- * @return string HTML output
- */
- function endHistoryList() {
- global $wgEnableHtmlDiff;
- $s = '</ul>';
- if( $wgEnableHtmlDiff ) {
- $s .= $this->submitButton( wfMsg( 'visualcomparison'),
- array(
- 'name' => 'htmldiff',
- 'class' => 'historysubmit',
- 'accesskey' => wfMsg( 'accesskey-visualcomparison' ),
- 'title' => wfMsg( 'tooltip-compareselectedversions' ),
- )
- );
- $s .= $this->submitButton( wfMsg( 'wikicodecomparison'),
- array(
- 'class' => 'historysubmit',
- 'accesskey' => wfMsg( 'accesskey-compareselectedversions' ),
- 'title' => wfMsg( 'tooltip-compareselectedversions' ),
- )
- );
- } else {
- $s .= $this->submitButton( wfMsg( 'compareselectedversions'),
- array(
- 'class' => 'historysubmit',
- 'accesskey' => wfMsg( 'accesskey-compareselectedversions' ),
- 'title' => wfMsg( 'tooltip-compareselectedversions' ),
- )
- );
- }
- $s .= '</form>';
- return $s;
- }
-
- /**
- * Creates a submit button
- *
- * @param array $attributes attributes
- * @return string HTML output for the submit button
- */
- function submitButton($message, $attributes = array() ) {
- # Disable submit button if history has 1 revision only
- if( $this->linesonpage > 1 ) {
- return Xml::submitButton( $message , $attributes );
- } else {
- return '';
- }
- }
-
- /**
- * Returns a row from the history printout.
- *
- * @todo document some more, and maybe clean up the code (some params redundant?)
- *
- * @param Row $row The database row corresponding to the previous line.
- * @param mixed $next The database row corresponding to the next line.
- * @param int $counter Apparently a counter of what row number we're at, counted from the top row = 1.
- * @param $notificationtimestamp
- * @param bool $latest Whether this row corresponds to the page's latest revision.
- * @param bool $firstInList Whether this row corresponds to the first displayed on this history page.
- * @return string HTML output for the row
- */
- function historyLine( $row, $next, $counter = '', $notificationtimestamp = false, $latest = false, $firstInList = false ) {
- global $wgUser, $wgLang;
- $rev = new Revision( $row );
- $rev->setTitle( $this->mTitle );
-
- $curlink = $this->curLink( $rev, $latest );
- $lastlink = $this->lastLink( $rev, $next, $counter );
- $arbitrary = $this->diffButtons( $rev, $firstInList, $counter );
- $link = $this->revLink( $rev );
-
- $s = "($curlink) ($lastlink) $arbitrary";
-
- if( $wgUser->isAllowed( 'deleterevision' ) ) {
- $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
- if( $firstInList ) {
- // We don't currently handle well changing the top revision's settings
- $del = $this->message['rev-delundel'];
- } else if( !$rev->userCan( Revision::DELETED_RESTRICTED ) ) {
- // If revision was hidden from sysops
- $del = $this->message['rev-delundel'];
- } else {
- $del = $this->mSkin->makeKnownLinkObj( $revdel,
- $this->message['rev-delundel'],
- 'target=' . urlencode( $this->mTitle->getPrefixedDbkey() ) .
- '&oldid=' . urlencode( $rev->getId() ) );
- // Bolden oversighted content
- if( $rev->isDeleted( Revision::DELETED_RESTRICTED ) )
- $del = "<strong>$del</strong>";
- }
- $s .= " <tt>(<small>$del</small>)</tt> ";
- }
-
- $s .= " $link";
- $s .= " <span class='history-user'>" . $this->mSkin->revUserTools( $rev, true ) . "</span>";
-
- if( $row->rev_minor_edit ) {
- $s .= ' ' . Xml::element( 'span', array( 'class' => 'minor' ), wfMsg( 'minoreditletter') );
- }
-
- if( !is_null( $size = $rev->getSize() ) && $rev->userCan( Revision::DELETED_TEXT ) ) {
- $s .= ' ' . $this->mSkin->formatRevisionSize( $size );
- }
-
- $s .= $this->mSkin->revComment( $rev, false, true );
-
- if( $notificationtimestamp && ($row->rev_timestamp >= $notificationtimestamp) ) {
- $s .= ' <span class="updatedmarker">' . wfMsgHtml( 'updatedmarker' ) . '</span>';
- }
- if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
- $s .= ' <tt>' . wfMsgHtml( 'deletedrev' ) . '</tt>';
- }
-
- $tools = array();
-
- if( !is_null( $next ) && is_object( $next ) ) {
- if( $latest && $this->mTitle->userCan( 'rollback' ) && $this->mTitle->userCan( 'edit' ) ) {
- $tools[] = '<span class="mw-rollback-link">'.$this->mSkin->buildRollbackLink( $rev ).'</span>';
- }
-
- if( $this->mTitle->quickUserCan( 'edit' ) && !$rev->isDeleted( Revision::DELETED_TEXT ) &&
- !$next->rev_deleted & Revision::DELETED_TEXT )
- {
- # Create undo tooltip for the first (=latest) line only
- $undoTooltip = $latest
- ? array( 'title' => wfMsg( 'tooltip-undo' ) )
- : array();
- $undolink = $this->mSkin->link(
- $this->mTitle,
- wfMsgHtml( 'editundo' ),
- $undoTooltip,
- array( 'action' => 'edit', 'undoafter' => $next->rev_id, 'undo' => $rev->getId() ),
- array( 'known', 'noclasses' )
- );
- $tools[] = "<span class=\"mw-history-undo\">{$undolink}</span>";
- }
- }
-
- if( $tools ) {
- $s .= ' (' . implode( ' | ', $tools ) . ')';
- }
-
- wfRunHooks( 'PageHistoryLineEnding', array( $this, &$row , &$s ) );
-
- return "<li>$s</li>\n";
- }
-
- /**
- * Create a link to view this revision of the page
- * @param Revision $rev
- * @returns string
- */
- function revLink( $rev ) {
- global $wgLang;
- $date = $wgLang->timeanddate( wfTimestamp(TS_MW, $rev->getTimestamp()), true );
- if( $rev->userCan( Revision::DELETED_TEXT ) ) {
- $link = $this->mSkin->makeKnownLinkObj(
- $this->mTitle, $date, "oldid=" . $rev->getId() );
- } else {
- $link = $date;
- }
- if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
- return '<span class="history-deleted">' . $link . '</span>';
- }
- return $link;
- }
-
- /**
- * Create a diff-to-current link for this revision for this page
- * @param Revision $rev
- * @param Bool $latest, this is the latest revision of the page?
- * @returns string
- */
- function curLink( $rev, $latest ) {
- $cur = $this->message['cur'];
- if( $latest || !$rev->userCan( Revision::DELETED_TEXT ) ) {
- return $cur;
- } else {
- return $this->mSkin->makeKnownLinkObj( $this->mTitle, $cur,
- 'diff=' . $this->mTitle->getLatestRevID() . "&oldid=" . $rev->getId() );
- }
- }
-
- /**
- * Create a diff-to-previous link for this revision for this page.
- * @param Revision $prevRev, the previous revision
- * @param mixed $next, the newer revision
- * @param int $counter, what row on the history list this is
- * @returns string
- */
- function lastLink( $prevRev, $next, $counter ) {
- $last = $this->message['last'];
- # $next may either be a Row, null, or "unkown"
- $nextRev = is_object($next) ? new Revision( $next ) : $next;
- if( is_null($next) ) {
- # Probably no next row
- return $last;
- } elseif( $next === 'unknown' ) {
- # Next row probably exists but is unknown, use an oldid=prev link
- return $this->mSkin->makeKnownLinkObj( $this->mTitle, $last,
- "diff=" . $prevRev->getId() . "&oldid=prev" );
- } elseif( !$prevRev->userCan(Revision::DELETED_TEXT) || !$nextRev->userCan(Revision::DELETED_TEXT) ) {
- return $last;
- } else {
- return $this->mSkin->makeKnownLinkObj( $this->mTitle, $last,
- "diff=" . $prevRev->getId() . "&oldid={$next->rev_id}" );
- }
- }
-
- /**
- * Create radio buttons for page history
- *
- * @param object $rev Revision
- * @param bool $firstInList Is this version the first one?
- * @param int $counter A counter of what row number we're at, counted from the top row = 1.
- * @return string HTML output for the radio buttons
- */
- function diffButtons( $rev, $firstInList, $counter ) {
- if( $this->linesonpage > 1) {
- $radio = array(
- 'type' => 'radio',
- 'value' => $rev->getId(),
- );
-
- if( !$rev->userCan( Revision::DELETED_TEXT ) ) {
- $radio['disabled'] = 'disabled';
- }
-
- /** @todo: move title texts to javascript */
- if( $firstInList ) {
- $first = Xml::element( 'input', array_merge(
- $radio,
- array(
- 'style' => 'visibility:hidden',
- 'name' => 'oldid' ) ) );
- $checkmark = array( 'checked' => 'checked' );
- } else {
- if( $counter == 2 ) {
- $checkmark = array( 'checked' => 'checked' );
- } else {
- $checkmark = array();
- }
- $first = Xml::element( 'input', array_merge(
- $radio,
- $checkmark,
- array( 'name' => 'oldid' ) ) );
- $checkmark = array();
- }
- $second = Xml::element( 'input', array_merge(
- $radio,
- $checkmark,
- array( 'name' => 'diff' ) ) );
- return $first . $second;
- } else {
- return '';
- }
- }
-
- /**
- * Fetch an array of revisions, specified by a given limit, offset and
- * direction. This is now only used by the feeds. It was previously
- * used by the main UI but that's now handled by the pager.
- */
- function fetchRevisions($limit, $offset, $direction) {
- $dbr = wfGetDB( DB_SLAVE );
-
- if( $direction == PageHistory::DIR_PREV )
- list($dirs, $oper) = array("ASC", ">=");
- else /* $direction == PageHistory::DIR_NEXT */
- list($dirs, $oper) = array("DESC", "<=");
-
- if( $offset )
- $offsets = array("rev_timestamp $oper '$offset'");
- else
- $offsets = array();
-
- $page_id = $this->mTitle->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 string $type
- */
- function feed( $type ) {
- global $wgFeedClasses, $wgRequest, $wgFeedLimit;
- if( !FeedUtils::checkFeedOutput($type) ) {
- return;
- }
-
- $feed = new $wgFeedClasses[$type](
- $this->mTitle->getPrefixedText() . ' - ' .
- wfMsgForContent( 'history-feed-title' ),
- wfMsgForContent( 'history-feed-description' ),
- $this->mTitle->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 = $wgRequest->getInt( 'limit', 10 );
- if( $limit > $wgFeedLimit || $limit < 1 ) {
- $limit = 10;
- }
- $items = $this->fetchRevisions($limit, 0, PageHistory::DIR_NEXT);
-
- $feed->outHeader();
- if( $items ) {
- foreach( $items as $row ) {
- $feed->outItem( $this->feedItem( $row ) );
- }
- } else {
- $feed->outItem( $this->feedEmpty() );
- }
- $feed->outFooter();
- }
-
- function feedEmpty() {
- global $wgOut;
- return new FeedItem(
- wfMsgForContent( 'nohistory' ),
- $wgOut->parse( wfMsgForContent( 'history-feed-empty' ) ),
- $this->mTitle->getFullUrl(),
- wfTimestamp( TS_MW ),
- '',
- $this->mTitle->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
- * @return FeedItem
- */
- function feedItem( $row ) {
- $rev = new Revision( $row );
- $rev->setTitle( $this->mTitle );
- $text = FeedUtils::formatDiffRow( $this->mTitle,
- $this->mTitle->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() ) );
- } else {
- $title = $rev->getUserText() . ": " . FeedItem::stripComment( $rev->getComment() );
- }
-
- return new FeedItem(
- $title,
- $text,
- $this->mTitle->getFullUrl( 'diff=' . $rev->getId() . '&oldid=prev' ),
- $rev->getTimestamp(),
- $rev->getUserText(),
- $this->mTitle->getTalkPage()->getFullUrl() );
- }
-}
-
-
-/**
- * @ingroup Pager
- */
-class PageHistoryPager extends ReverseChronologicalPager {
- public $mLastRow = false, $mPageHistory, $mTitle;
-
- function __construct( $pageHistory, $year='', $month='' ) {
- parent::__construct();
- $this->mPageHistory = $pageHistory;
- $this->mTitle =& $this->mPageHistory->mTitle;
- $this->getDateCond( $year, $month );
- }
-
- function getQueryInfo() {
- $queryInfo = array(
- 'tables' => array('revision'),
- 'fields' => Revision::selectFields(),
- 'conds' => array('rev_page' => $this->mPageHistory->mTitle->getArticleID() ),
- 'options' => array( 'USE INDEX' => array('revision' => 'page_timestamp') )
- );
- wfRunHooks( 'PageHistoryPager::getQueryInfo', array( &$this, &$queryInfo ) );
- return $queryInfo;
- }
-
- function getIndexField() {
- return 'rev_timestamp';
- }
-
- function formatRow( $row ) {
- if( $this->mLastRow ) {
- $latest = $this->mCounter == 1 && $this->mIsFirst;
- $firstInList = $this->mCounter == 1;
- $s = $this->mPageHistory->historyLine( $this->mLastRow, $row, $this->mCounter++,
- $this->mTitle->getNotificationTimestamp(), $latest, $firstInList );
- } else {
- $s = '';
- }
- $this->mLastRow = $row;
- return $s;
- }
-
- function getStartBody() {
- $this->mLastRow = false;
- $this->mCounter = 1;
- return '';
- }
-
- function getEndBody() {
- if( $this->mLastRow ) {
- $latest = $this->mCounter == 1 && $this->mIsFirst;
- $firstInList = $this->mCounter == 1;
- if( $this->mIsBackwards ) {
- # Next row is unknown, but for UI reasons, probably exists if an offset has been specified
- if( $this->mOffset == '' ) {
- $next = null;
- } else {
- $next = 'unknown';
- }
- } else {
- # The next row is the past-the-end row
- $next = $this->mPastTheEndRow;
- }
- $s = $this->mPageHistory->historyLine( $this->mLastRow, $next, $this->mCounter++,
- $this->mTitle->getNotificationTimestamp(), $latest, $firstInList );
- } else {
- $s = '';
- }
- return $s;
- }
-}
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