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                 if( $this->mTitle->getArticleID() == 0 ) {
  43                         $wgOut->addHTML( wfMsg( 'nohistory' ) );
  44                         wfProfileOut( $fname );
  45                         return;
  46                 }
  47
  48                 list( $limit, $offset ) = wfCheckLimits();
  49
  50                 /* We have to draw the latest revision from 'cur' */
  51                 $rawlimit = $limit;
  52                 $rawoffset = $offset - 1;
  53                 if( 0 == $offset ) {
  54                         $rawlimit--;
  55                         $rawoffset = 0;
  56                 }
  57                 /* Check one extra row to see whether we need to show 'next' and diff links */
  58                 $limitplus = $rawlimit + 1;
  59
  60                 $namespace = $this->mTitle->getNamespace();
  61                 $title = $this->mTitle->getText();
  62                 $uid = $wgUser->getID();
  63                 $db =& wfGetDB( DB_SLAVE );
  64                 if ($wgShowUpdatedMarker && $wgUser->getOption( 'showupdated' )) {
  65                         $dbr =& wfGetDB( DB_MASTER );
  66                         $row = $dbr->selectRow( 'watchlist',
  67                                 array( 'wl_notificationtimestamp' ),
  68                                 array( 'wl_namespace' => $namespace, 'wl_title' => $this->mTitle->getDBkey(), 'wl_user' => $wgUser->getID() ),
  69                                 $fname );
  70                         $notificationtimestamp = $row->wl_notificationtimestamp;
  71                 } else $notificationtimestamp = false ;
  72
  73                 $use_index = $db->useIndexClause( 'name_title_timestamp' );
  74                 $oldtable = $db->tableName( 'old' );
  75
  76                 $sql = "SELECT old_id,old_user," .
  77                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
  78                   "FROM $oldtable $use_index " .
  79                   "WHERE old_namespace={$namespace} AND " .
  80                   "old_title='" . $db->strencode( $this->mTitle->getDBkey() ) . "' " .
  81                   "ORDER BY inverse_timestamp".$db->limitResult($limitplus,$rawoffset);
  82                 $res = $db->query( $sql, $fname );
  83
  84                 $revs = $db->numRows( $res );
  85
  86                 if( $revs < $limitplus ) // the sql above tries to fetch one extra
  87                         $this->linesonpage = $revs;
  88                 else
  89                         $this->linesonpage = $revs - 1;
  90
  91                 $atend = ($revs < $limitplus);
  92
  93                 $this->mSkin = $wgUser->getSkin();
  94                 $numbar = wfViewPrevNext(
  95                         $offset, $limit,
  96                         $this->mTitle->getPrefixedText(),
  97                         'action=history', $atend );
  98                 $s = $numbar;
  99                 if($this->linesonpage > 0) {
 100                         $submitpart1 = '<input class="historysubmit" type="submit" accesskey="'.wfMsg('accesskey-compareselectedversions').
 101                         '" title="'.wfMsg('tooltip-compareselectedversions').'" value="'.wfMsg('compareselectedversions').'"';
 102                         $this->submitbuttonhtml1 = $submitpart1 . ' />';
 103                         $this->submitbuttonhtml2 = $submitpart1 . ' id="historysubmit" />';
 104                 }
 105                 $s .= $this->beginHistoryList();
 106                 $counter = 1;
 107                 if( $offset == 0 ){
 108                         $this->linesonpage++;
 109                         $s .= $this->historyLine(
 110                                 $this->mArticle->getTimestamp(),
 111                                 $this->mArticle->getUser(),
 112                                 $this->mArticle->getUserText(), $namespace,
 113                                 $title, 0, $this->mArticle->getComment(),
 114                                 ( $this->mArticle->getMinorEdit() > 0 ),
 115                                 $counter++,
 116                                 $notificationtimestamp
 117                         );
 118                 }
 119                 while ( $line = $db->fetchObject( $res ) ) {
 120                         $s .= $this->historyLine(
 121                                 $line->old_timestamp, $line->old_user,
 122                                 $line->old_user_text, $namespace,
 123                                 $title, $line->old_id,
 124                                 $line->old_comment, ( $line->old_minor_edit > 0 ),
 125                                 $counter++,
 126                                 $notificationtimestamp
 127                         );
 128                 }
 129                 $s .= $this->endHistoryList( !$atend );
 130                 $s .= $numbar;
 131                 $wgOut->addHTML( $s );
 132                 wfProfileOut( $fname );
 133         }
 134
 135         function beginHistoryList() {
 136                 global $wgTitle;
 137                 $this->lastdate = $this->lastline = '';
 138                 $s = '<p>' . wfMsg( 'histlegend' ) . '</p>';
 139                 $s .= '<form action="' . $wgTitle->escapeLocalURL( '-' ) . '" method="get">';
 140                 $prefixedkey = htmlspecialchars($wgTitle->getPrefixedDbKey());
 141                 $s .= "<input type='hidden' name='title' value=\"{$prefixedkey}\" />\n";
 142                 $s .= !empty($this->submitbuttonhtml1) ? $this->submitbuttonhtml1."\n":'';
 143                 $s .= '<ul id="pagehistory">';
 144                 return $s;
 145         }
 146
 147         function endHistoryList( $skip = false ) {
 148                 $last = wfMsg( 'last' );
 149
 150                 $s = $skip ? '' : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 151                 $s .= '</ul>';
 152                 $s .= !empty($this->submitbuttonhtml2) ? $this->submitbuttonhtml2 : '';
 153                 $s .= '</form>';
 154                 return $s;
 155         }
 156
 157         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor, $counter = '', $notificationtimestamp = false ) {
 158                 global $wgLang, $wgContLang;
 159
 160                 static $message;
 161                 if( !isset( $message ) ) {
 162                         foreach( explode( ' ', 'cur last selectolderversionfordiff selectnewerversionfordiff minoreditletter' ) as $msg ) {
 163                                 $message[$msg] = wfMsg( $msg );
 164                         }
 165                 }
 166
 167                 if ( $oid && $this->lastline ) {
 168                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLinkObj(
 169                           $this->mTitle, $message['last'], "diff=\\1&oldid={$oid}",'' ,'' ,' tabindex="'.$counter.'"' ), $this->lastline );
 170                 } else {
 171                         $ret = '';
 172                 }
 173                 $dt = $wgLang->timeanddate( $ts, true );
 174
 175                 if ( $oid ) {
 176                         $q = 'oldid='.$oid;
 177                 } else {
 178                         $q = '';
 179                 }
 180                 $link = $this->mSkin->makeKnownLinkObj( $this->mTitle, $dt, $q );
 181
 182                 if ( 0 == $u ) {
 183                         $contribsPage =& Title::makeTitle( NS_SPECIAL, 'Contributions' );
 184                         $ul = $this->mSkin->makeKnownLinkObj( $contribsPage,
 185                                 htmlspecialchars( $ut ), 'target=' . urlencode( $ut ) );
 186                 } else {
 187                         $userPage =& Title::makeTitle( NS_USER, $ut );
 188                         $ul = $this->mSkin->makeLinkObj( $userPage , htmlspecialchars( $ut ) );
 189                 }
 190
 191                 $s = '<li>';
 192                 if ( $oid ) {
 193                         $curlink = $this->mSkin->makeKnownLinkObj( $this->mTitle, $message['cur'],
 194                           'diff=0&oldid='.$oid );
 195                 } else {
 196                         $curlink = $message['cur'];
 197                 }
 198                 $arbitrary = '';
 199                 if( $this->linesonpage > 1) {
 200                         # XXX: move title texts to javascript
 201                         $checkmark = '';
 202                         if ( !$oid ) {
 203                                 $arbitrary = '<input type="radio" style="visibility:hidden" name="oldid" value="'.$oid.'" title="'.$message['selectolderversionfordiff'].'" />';
 204                                 $checkmark = ' checked="checked"';
 205                         } else {
 206                                 if( $counter == 2 ) $checkmark = ' checked="checked"';
 207                                 $arbitrary = '<input type="radio" name="oldid" value="'.$oid.'" title="'.$message['selectolderversionfordiff'].'"'.$checkmark.' />';
 208                                 $checkmark = '';
 209                         }
 210                         $arbitrary .= '<input type="radio" name="diff" value="'.$oid.'" title="'.$message['selectnewerversionfordiff'].'"'.$checkmark.' />';
 211                 }
 212                 $s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary {$link} <span class='user'>{$ul}</span>";
 213                 $s .= $isminor ? ' <span class="minor">'.$message['minoreditletter'].'</span>': '' ;
 214
 215
 216                 if ( '' != $c && '*' != $c ) {
 217                         $c = $this->mSkin->formatcomment( $c, $this->mTitle );
 218                         $s .= " <em>($c)</em>";
 219                 }
 220                 if ($notificationtimestamp && ($ts >= $notificationtimestamp)) {
 221                         $s .= wfMsg( 'updatedmarker' );
 222                 }
 223                 $s .= '</li>';
 224
 225                 $this->lastline = $s;
 226                 return $ret;
 227         }
 228
 229 }
 230
 231 ?>