* Respect read-only mode on block removals
[lhc/web/wiklou.git] / includes / PageHistory.php
index d3fbff6..66ed592 100644 (file)
 <?php
-
-/* Page history
-   Split off from Article.php and Skin.php, 2003-12-22
-*/
-
+/**
+ * Page history
+ * 
+ * Split off from Article.php and Skin.php, 2003-12-22
+ * @package MediaWiki
+ */
+
+/**
+ * @todo document
+ * @package MediaWiki
+ */
 class PageHistory {
        var $mArticle, $mTitle, $mSkin;
        var $lastline, $lastdate;
-       
+       var $linesonpage;
        function PageHistory( $article ) {
                $this->mArticle =& $article;
                $this->mTitle =& $article->mTitle;
        }
-       
+
        # This shares a lot of issues (and code) with Recent Changes
 
-       function history()
-       {
-               global $wgUser, $wgOut, $wgLang, $offset, $limit;
+       function history() {
+               global $wgUser, $wgOut, $wgLang, $wgShowUpdatedMarker;
 
                # If page hasn't changed, client can cache this
-               
+
                if( $wgOut->checkLastModified( $this->mArticle->getTimestamp() ) ){
                        # Client cache fresh and headers sent, nothing more to do.
                        return;
                }
-               $fname = "PageHistory::history";
+               $fname = 'PageHistory::history';
                wfProfileIn( $fname );
 
                $wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
-               $wgOut->setSubtitle( wfMsg( "revhistory" ) );
+               $wgOut->setSubtitle( wfMsg( 'revhistory' ) );
                $wgOut->setArticleFlag( false );
-               $wgOut->setRobotpolicy( "noindex,nofollow" );
+               $wgOut->setArticleRelated( true );
+               $wgOut->setRobotpolicy( 'noindex,nofollow' );
 
-               if( $this->mTitle->getArticleID() == 0 ) {
-                       $wgOut->addHTML( wfMsg( "nohistory" ) );
+               $id = $this->mTitle->getArticleID();
+               if( $id == 0 ) {
+                       $wgOut->addHTML( wfMsg( 'nohistory' ) );
                        wfProfileOut( $fname );
                        return;
                }
-               
-               $offset = (int)$offset;
-               $limit = (int)$limit;
-               if( $limit == 0 ) $limit = 50;
+
+               list( $limit, $offset ) = wfCheckLimits();
+
+               /* Check one extra row to see whether we need to show 'next' and diff links */
+               $limitplus = $limit + 1;
+
                $namespace = $this->mTitle->getNamespace();
                $title = $this->mTitle->getText();
-               $sql = "SELECT old_id,old_user," .
-                 "old_comment,old_user_text,old_timestamp,old_minor_edit ".
-                 "FROM old USE INDEX (name_title_timestamp) " .
-                 "WHERE old_namespace={$namespace} AND " .
-                 "old_title='" . wfStrencode( $this->mTitle->getDBkey() ) . "' " .
-                 "ORDER BY inverse_timestamp LIMIT $offset, $limit";
-               $res = wfQuery( $sql, DB_READ, $fname );
-
-               $revs = wfNumRows( $res );
-               if( $this->mTitle->getArticleID() == 0 ) {
-                       $wgOut->addHTML( wfMsg( "nohistory" ) );
-                       wfProfileOut( $fname );
-                       return;
-               }
-               
+               $uid = $wgUser->getID();
+               $db =& wfGetDB( DB_SLAVE );
+               if ($uid && $wgShowUpdatedMarker && $wgUser->getOption( 'showupdated' ))
+                       $notificationtimestamp = $db->selectField( 'watchlist',
+                               'wl_notificationtimestamp',
+                               array( 'wl_namespace' => $namespace, 'wl_title' => $this->mTitle->getDBkey(), 'wl_user' => $uid ),
+                               $fname );
+               else $notificationtimestamp = false;
+
+               $use_index = $db->useIndexClause( 'page_timestamp' );
+               $revision = $db->tableName( 'revision' );
+
+               $sql = "SELECT rev_id,rev_user," .
+                 "rev_comment,rev_user_text,rev_timestamp,rev_minor_edit ".
+                 "FROM $revision $use_index " .
+                 "WHERE rev_page=$id " .
+                 "ORDER BY rev_timestamp DESC ".$db->limitResult($limitplus,$offset);
+               $res = $db->query( $sql, $fname );
+
+               $revs = $db->numRows( $res );
+
+               if( $revs < $limitplus ) // the sql above tries to fetch one extra
+                       $this->linesonpage = $revs;
+               else
+                       $this->linesonpage = $revs - 1;
+
+               $atend = ($revs < $limitplus);
+
                $this->mSkin = $wgUser->getSkin();
                $numbar = wfViewPrevNext(
                        $offset, $limit,
                        $this->mTitle->getPrefixedText(),
-                       "action=history" );
+                       'action=history', $atend );
                $s = $numbar;
+               if($this->linesonpage > 0) {
+                       $submitpart1 = '<input class="historysubmit" type="submit" accesskey="'.wfMsg('accesskey-compareselectedversions').
+                       '" title="'.wfMsg('tooltip-compareselectedversions').'" value="'.wfMsg('compareselectedversions').'"';
+                       $this->submitbuttonhtml1 = $submitpart1 . ' />';
+                       $this->submitbuttonhtml2 = $submitpart1 . ' id="historysubmit" />';
+               }
                $s .= $this->beginHistoryList();
-
-               if($offset == 0 )
-               $s .= $this->historyLine( $this->mArticle->getTimestamp(), $this->mArticle->getUser(),
-                 $this->mArticle->getUserText(), $namespace,
-                 $title, 0, $this->mArticle->getComment(),
-                 ( $this->mArticle->getMinorEdit() > 0 ) );
-
-               $revs = wfNumRows( $res );
-               while ( $line = wfFetchObject( $res ) ) {
-                       $s .= $this->historyLine( $line->old_timestamp, $line->old_user,
-                         $line->old_user_text, $namespace,
-                         $title, $line->old_id,
-                         $line->old_comment, ( $line->old_minor_edit > 0 ) );
+               $counter = 1;
+               while ( $line = $db->fetchObject( $res ) ) {
+                       $s .= $this->historyLine(
+                               $line->rev_timestamp, $line->rev_user,
+                               $line->rev_user_text, $namespace,
+                               $title, $line->rev_id,
+                               $line->rev_comment, ( $line->rev_minor_edit > 0 ),
+                               $counter,
+                               $notificationtimestamp,
+                               ($counter == 1 && $offset == 0)
+                       );
+                       $counter++;
                }
-               $s .= $this->endHistoryList();
+               $s .= $this->endHistoryList( !$atend );
                $s .= $numbar;
                $wgOut->addHTML( $s );
                wfProfileOut( $fname );
        }
 
-       function beginHistoryList()
-       {
-               $this->lastdate = $this->lastline = "";
-               $s = "\n<p>" . wfMsg( "histlegend" ) . "\n<ul>";
+       function beginHistoryList() {
+               global $wgTitle;
+               $this->lastdate = $this->lastline = '';
+               $s = '<p>' . wfMsg( 'histlegend' ) . '</p>';
+               $s .= '<form action="' . $wgTitle->escapeLocalURL( '-' ) . '" method="get">';
+               $prefixedkey = htmlspecialchars($wgTitle->getPrefixedDbKey());
+               $s .= "<input type='hidden' name='title' value=\"{$prefixedkey}\" />\n";
+               $s .= !empty($this->submitbuttonhtml1) ? $this->submitbuttonhtml1."\n":'';
+               $s .= '<ul id="pagehistory">';
                return $s;
        }
 
-       function endHistoryList()
-       {
-               $last = wfMsg( "last" );
+       function endHistoryList( $skip = false ) {
+               $last = wfMsg( 'last' );
 
-               $s = preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
-               $s .= "</ul>\n";
+               $s = $skip ? '' : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
+               $s .= '</ul>';
+               $s .= !empty($this->submitbuttonhtml2) ? $this->submitbuttonhtml2 : '';
+               $s .= '</form>';
                return $s;
        }
 
-       function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor )
-       {
-               global $wgLang;
-
-               $artname = Title::makeName( $ns, $ttl );
-               $last = wfMsg( "last" );
-               $cur = wfMsg( "cur" );
-               $cr = wfMsg( "currentrev" );
+       function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor, $counter = '', $notificationtimestamp = false, $latest = false ) {
+               global $wgLang, $wgContLang;
 
+               static $message;
+               if( !isset( $message ) ) {
+                       foreach( explode( ' ', 'cur last selectolderversionfordiff selectnewerversionfordiff minoreditletter' ) as $msg ) {
+                               $message[$msg] = wfMsg( $msg );
+                       }
+               }
+               
                if ( $oid && $this->lastline ) {
-                       $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
-                         $artname, $last, "diff=\\1&oldid={$oid}" ), $this->lastline );
+                       $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLinkObj(
+                         $this->mTitle, $message['last'], "diff=\\1&oldid={$oid}",'' ,'' ,' tabindex="'.$counter.'"' ), $this->lastline );
                } else {
-                       $ret = "";
+                       $ret = '';
                }
                $dt = $wgLang->timeanddate( $ts, true );
 
                if ( $oid ) {
-                       $q = "oldid={$oid}";
+                       $q = 'oldid='.$oid;
                } else {
-                       $q = "";
+                       $q = '';
                }
-               $link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
+               $link = $this->mSkin->makeKnownLinkObj( $this->mTitle, $dt, $q );
 
                if ( 0 == $u ) {
-                       $ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( "Contributions" ),
-                               $ut, "target=" . $ut );
-               } else { 
-                       $ul = $this->mSkin->makeLink( $wgLang->getNsText(
-                               Namespace::getUser() ) . ":{$ut}", $ut );
+                       $contribsPage =& Title::makeTitle( NS_SPECIAL, 'Contributions' );
+                       $ul = $this->mSkin->makeKnownLinkObj( $contribsPage,
+                               htmlspecialchars( $ut ), 'target=' . urlencode( $ut ) );
+               } else {
+                       $userPage =& Title::makeTitle( NS_USER, $ut );
+                       $ul = $this->mSkin->makeLinkObj( $userPage , htmlspecialchars( $ut ) );
                }
 
-               $s = "<li>";
-               if ( $oid ) {
-                       $curlink = $this->mSkin->makeKnownLink( $artname, $cur,
-                         "diff=0&oldid={$oid}" );
+               $s = '<li>';
+               if ( $oid && !$latest ) {
+                       $curlink = $this->mSkin->makeKnownLinkObj( $this->mTitle, $message['cur'],
+                         'diff=0&oldid='.$oid );
                } else {
-                       $curlink = $cur;
+                       $curlink = $message['cur'];
                }
-               $s .= "({$curlink}) (!OLDID!{$oid}!) . .";
-
-               $M = wfMsg( "minoreditletter" );
-               if ( $isminor ) {
-                       $s .= " <strong>{$M}</strong>";
+               $arbitrary = '';
+               if( $this->linesonpage > 1) {
+                       # XXX: move title texts to javascript
+                       $checkmark = '';
+                       if ( !$oid || $latest ) {
+                               $arbitrary = '<input type="radio" style="visibility:hidden" name="oldid" value="'.$oid.'" title="'.$message['selectolderversionfordiff'].'" />';
+                               $checkmark = ' checked="checked"';
+                       } else {
+                               if( $counter == 2 ) $checkmark = ' checked="checked"';
+                               $arbitrary = '<input type="radio" name="oldid" value="'.$oid.'" title="'.$message['selectolderversionfordiff'].'"'.$checkmark.' />';
+                               $checkmark = '';
+                       }
+                       $arbitrary .= '<input type="radio" name="diff" value="'.$oid.'" title="'.$message['selectnewerversionfordiff'].'"'.$checkmark.' />';
                }
-               $s .= " {$link} . . {$ul}";
+               $s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary {$link} <span class='user'>{$ul}</span>";
+               $s .= $isminor ? ' <span class="minor">'.$message['minoreditletter'].'</span>': '' ;
+
 
-               if ( "" != $c && "*" != $c ) {
-                       $s .= " <em>(" . wfEscapeHTML($c) . ")</em>";
+               $s .= $this->mSkin->commentBlock( $c, $this->mTitle );
+               if ($notificationtimestamp && ($ts >= $notificationtimestamp)) {
+                       $s .= wfMsg( 'updatedmarker' );
                }
-               $s .= "</li>\n";
+               $s .= '</li>';
 
                $this->lastline = $s;
                return $ret;