includes/PageHistory.php

   1 <?php
   2 /**
   3  * Page history
   4  *
   5  * Split off from Article.php and Skin.php, 2003-12-22
   6  * @package MediaWiki
   7  */
   8
   9 /**
  10  * @todo document
  11  * @package MediaWiki
  12  */
  13 class PageHistory {
  14         var $mArticle, $mTitle, $mSkin;
  15         var $lastline, $lastdate;
  16         var $linesonpage;
  17         function PageHistory( $article ) {
  18                 $this->mArticle =& $article;
  19                 $this->mTitle =& $article->mTitle;
  20         }
  21
  22         # This shares a lot of issues (and code) with Recent Changes
  23
  24         function history() {
  25                 global $wgUser, $wgOut, $wgLang, $wgShowUpdatedMarker;
  26
  27                 # If page hasn't changed, client can cache this
  28
  29                 if( $wgOut->checkLastModified( $this->mArticle->getTimestamp() ) ){
  30                         # Client cache fresh and headers sent, nothing more to do.
  31                         return;
  32                 }
  33                 $fname = 'PageHistory::history';
  34                 wfProfileIn( $fname );
  35
  36                 $wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
  37                 $wgOut->setSubtitle( wfMsg( 'revhistory' ) );
  38                 $wgOut->setArticleFlag( false );
  39                 $wgOut->setArticleRelated( true );
  40                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
  41
  42                 $id = $this->mTitle->getArticleID();
  43                 if( $id == 0 ) {
  44                         $wgOut->addHTML( wfMsg( 'nohistory' ) );
  45                         wfProfileOut( $fname );
  46                         return;
  47                 }
  48
  49                 list( $limit, $offset ) = wfCheckLimits();
  50
  51                 /* Check one extra row to see whether we need to show 'next' and diff links */
  52                 $limitplus = $limit + 1;
  53
  54                 $namespace = $this->mTitle->getNamespace();
  55                 $title = $this->mTitle->getText();
  56                 $uid = $wgUser->getID();
  57                 $db =& wfGetDB( DB_SLAVE );
  58                 if ($wgShowUpdatedMarker && $wgUser->getOption( 'showupdated' )) {
  59                         $dbr =& wfGetDB( DB_MASTER );
  60                         $row = $dbr->selectRow( 'watchlist',
  61                                 array( 'wl_notificationtimestamp' ),
  62                                 array( 'wl_namespace' => $namespace, 'wl_title' => $this->mTitle->getDBkey(), 'wl_user' => $wgUser->getID() ),
  63                                 $fname );
  64                         $notificationtimestamp = $row->wl_notificationtimestamp;
  65                 } else $notificationtimestamp = false ;
  66
  67                 $db =& wfGetDB( DB_SLAVE );
  68                 $use_index = $db->useIndexClause( 'page_timestamp' );
  69                 $revision = $db->tableName( 'revision' );
  70
  71                 $sql = "SELECT rev_id,rev_user," .
  72                   "rev_comment,rev_user_text,rev_timestamp,rev_minor_edit ".
  73                   "FROM $revision $use_index " .
  74                   "WHERE rev_page=$id " .
  75                   "ORDER BY inverse_timestamp ".$db->limitResult($limitplus,$offset);
  76                 $res = $db->query( $sql, $fname );
  77
  78                 $revs = $db->numRows( $res );
  79
  80                 if( $revs < $limitplus ) // the sql above tries to fetch one extra
  81                         $this->linesonpage = $revs;
  82                 else
  83                         $this->linesonpage = $revs - 1;
  84
  85                 $atend = ($revs < $limitplus);
  86
  87                 $this->mSkin = $wgUser->getSkin();
  88                 $numbar = wfViewPrevNext(
  89                         $offset, $limit,
  90                         $this->mTitle->getPrefixedText(),
  91                         'action=history', $atend );
  92                 $s = $numbar;
  93                 if($this->linesonpage > 0) {
  94                         $submitpart1 = '<input class="historysubmit" type="submit" accesskey="'.wfMsg('accesskey-compareselectedversions').
  95                         '" title="'.wfMsg('tooltip-compareselectedversions').'" value="'.wfMsg('compareselectedversions').'"';
  96                         $this->submitbuttonhtml1 = $submitpart1 . ' />';
  97                         $this->submitbuttonhtml2 = $submitpart1 . ' id="historysubmit" />';
  98                 }
  99                 $s .= $this->beginHistoryList();
 100                 $counter = 1;
 101                 while ( $line = $db->fetchObject( $res ) ) {
 102                         $s .= $this->historyLine(
 103                                 $line->rev_timestamp, $line->rev_user,
 104                                 $line->rev_user_text, $namespace,
 105                                 $title, $line->rev_id,
 106                                 $line->rev_comment, ( $line->rev_minor_edit > 0 ),
 107                                 $counter,
 108                                 $notificationtimestamp,
 109                                 ($counter == 1 && $offset == 0)
 110                         );
 111                         $counter++;
 112                 }
 113                 $s .= $this->endHistoryList( !$atend );
 114                 $s .= $numbar;
 115                 $wgOut->addHTML( $s );
 116                 wfProfileOut( $fname );
 117         }
 118
 119         function beginHistoryList() {
 120                 global $wgTitle;
 121                 $this->lastdate = $this->lastline = '';
 122                 $s = '<p>' . wfMsg( 'histlegend' ) . '</p>';
 123                 $s .= '<form action="' . $wgTitle->escapeLocalURL( '-' ) . '" method="get">';
 124                 $prefixedkey = htmlspecialchars($wgTitle->getPrefixedDbKey());
 125                 $s .= "<input type='hidden' name='title' value=\"{$prefixedkey}\" />\n";
 126                 $s .= !empty($this->submitbuttonhtml1) ? $this->submitbuttonhtml1."\n":'';
 127                 $s .= '<ul id="pagehistory">';
 128                 return $s;
 129         }
 130
 131         function endHistoryList( $skip = false ) {
 132                 $last = wfMsg( 'last' );
 133
 134                 $s = $skip ? '' : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 135                 $s .= '</ul>';
 136                 $s .= !empty($this->submitbuttonhtml2) ? $this->submitbuttonhtml2 : '';
 137                 $s .= '</form>';
 138                 return $s;
 139         }
 140
 141         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor, $counter = '', $notificationtimestamp = false, $latest = false ) {
 142                 global $wgLang, $wgContLang;
 143
 144                 static $message;
 145                 if( !isset( $message ) ) {
 146                         foreach( explode( ' ', 'cur last selectolderversionfordiff selectnewerversionfordiff minoreditletter' ) as $msg ) {
 147                                 $message[$msg] = wfMsg( $msg );
 148                         }
 149                 }
 150
 151                 if ( $oid && $this->lastline ) {
 152                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLinkObj(
 153                           $this->mTitle, $message['last'], "diff=\\1&oldid={$oid}",'' ,'' ,' tabindex="'.$counter.'"' ), $this->lastline );
 154                 } else {
 155                         $ret = '';
 156                 }
 157                 $dt = $wgLang->timeanddate( $ts, true );
 158
 159                 if ( $oid ) {
 160                         $q = 'oldid='.$oid;
 161                 } else {
 162                         $q = '';
 163                 }
 164                 $link = $this->mSkin->makeKnownLinkObj( $this->mTitle, $dt, $q );
 165
 166                 if ( 0 == $u ) {
 167                         $contribsPage =& Title::makeTitle( NS_SPECIAL, 'Contributions' );
 168                         $ul = $this->mSkin->makeKnownLinkObj( $contribsPage,
 169                                 htmlspecialchars( $ut ), 'target=' . urlencode( $ut ) );
 170                 } else {
 171                         $userPage =& Title::makeTitle( NS_USER, $ut );
 172                         $ul = $this->mSkin->makeLinkObj( $userPage , htmlspecialchars( $ut ) );
 173                 }
 174
 175                 $s = '<li>';
 176                 if ( $oid && !$latest ) {
 177                         $curlink = $this->mSkin->makeKnownLinkObj( $this->mTitle, $message['cur'],
 178                           'diff=0&oldid='.$oid );
 179                 } else {
 180                         $curlink = $message['cur'];
 181                 }
 182                 $arbitrary = '';
 183                 if( $this->linesonpage > 1) {
 184                         # XXX: move title texts to javascript
 185                         $checkmark = '';
 186                         if ( !$oid || $latest ) {
 187                                 $arbitrary = '<input type="radio" style="visibility:hidden" name="oldid" value="'.$oid.'" title="'.$message['selectolderversionfordiff'].'" />';
 188                                 $checkmark = ' checked="checked"';
 189                         } else {
 190                                 if( $counter == 2 ) $checkmark = ' checked="checked"';
 191                                 $arbitrary = '<input type="radio" name="oldid" value="'.$oid.'" title="'.$message['selectolderversionfordiff'].'"'.$checkmark.' />';
 192                                 $checkmark = '';
 193                         }
 194                         $arbitrary .= '<input type="radio" name="diff" value="'.$oid.'" title="'.$message['selectnewerversionfordiff'].'"'.$checkmark.' />';
 195                 }
 196                 $s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary {$link} <span class='user'>{$ul}</span>";
 197                 $s .= $isminor ? ' <span class="minor">'.$message['minoreditletter'].'</span>': '' ;
 198
 199
 200                 if ( '' != $c && '*' != $c ) {
 201                         $c = $this->mSkin->formatcomment( $c, $this->mTitle );
 202                         $s .= " <em>($c)</em>";
 203                 }
 204                 if ($notificationtimestamp && ($ts >= $notificationtimestamp)) {
 205                         $s .= wfMsg( 'updatedmarker' );
 206                 }
 207                 $s .= '</li>';
 208
 209                 $this->lastline = $s;
 210                 return $ret;
 211         }
 212
 213 }
 214
 215 ?>