includes/PageHistory.php

   1 <?php
   2
   3 /* Page history
   4    Split off from Article.php and Skin.php, 2003-12-22
   5 */
   6
   7 class PageHistory {
   8         var $mArticle, $mTitle, $mSkin;
   9         var $lastline, $lastdate;
  10
  11         function PageHistory( $article ) {
  12                 $this->mArticle =& $article;
  13                 $this->mTitle =& $article->mTitle;
  14         }
  15
  16         # This shares a lot of issues (and code) with Recent Changes
  17
  18         function history()
  19         {
  20                 global $wgUser, $wgOut, $wgLang, $offset, $limit;
  21
  22                 # If page hasn't changed, client can cache this
  23
  24                 if( $wgOut->checkLastModified( $this->mArticle->getTimestamp() ) ){
  25                         # Client cache fresh and headers sent, nothing more to do.
  26                         return;
  27                 }
  28                 $fname = "PageHistory::history";
  29                 wfProfileIn( $fname );
  30
  31                 $wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
  32                 $wgOut->setSubtitle( wfMsg( "revhistory" ) );
  33                 $wgOut->setArticleFlag( false );
  34                 $wgOut->setRobotpolicy( "noindex,nofollow" );
  35
  36                 if( $this->mTitle->getArticleID() == 0 ) {
  37                         $wgOut->addHTML( wfMsg( "nohistory" ) );
  38                         wfProfileOut( $fname );
  39                         return;
  40                 }
  41
  42                 $offset = (int)$offset;
  43                 $limit = (int)$limit;
  44                 if( $limit == 0 ) $limit = 50;
  45                 $namespace = $this->mTitle->getNamespace();
  46                 $title = $this->mTitle->getText();
  47                 $sql = "SELECT old_id,old_user," .
  48                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
  49                   "FROM old USE INDEX (name_title_timestamp) " .
  50                   "WHERE old_namespace={$namespace} AND " .
  51                   "old_title='" . wfStrencode( $this->mTitle->getDBkey() ) . "' " .
  52                   "ORDER BY inverse_timestamp LIMIT $offset, $limit";
  53                 $res = wfQuery( $sql, DB_READ, $fname );
  54
  55                 $revs = wfNumRows( $res );
  56                 if( $this->mTitle->getArticleID() == 0 ) {
  57                         $wgOut->addHTML( wfMsg( "nohistory" ) );
  58                         wfProfileOut( $fname );
  59                         return;
  60                 }
  61
  62                 $this->mSkin = $wgUser->getSkin();
  63                 $numbar = wfViewPrevNext(
  64                         $offset, $limit,
  65                         $this->mTitle->getPrefixedText(),
  66                         "action=history" );
  67                 $s = $numbar;
  68                 $s .= $this->beginHistoryList();
  69
  70                 if($offset == 0 )
  71                 $s .= $this->historyLine( $this->mArticle->getTimestamp(), $this->mArticle->getUser(),
  72                   $this->mArticle->getUserText(), $namespace,
  73                   $title, 0, $this->mArticle->getComment(),
  74                   ( $this->mArticle->getMinorEdit() > 0 ) );
  75
  76                 $revs = wfNumRows( $res );
  77                 while ( $line = wfFetchObject( $res ) ) {
  78                         $s .= $this->historyLine( $line->old_timestamp, $line->old_user,
  79                           $line->old_user_text, $namespace,
  80                           $title, $line->old_id,
  81                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
  82                 }
  83                 $s .= $this->endHistoryList();
  84                 $s .= $numbar;
  85                 $wgOut->addHTML( $s );
  86                 wfProfileOut( $fname );
  87         }
  88
  89         function beginHistoryList()
  90         {
  91                 $this->lastdate = $this->lastline = "";
  92                 $s = "\n<p>" . wfMsg( "histlegend" ) . "\n<ul>";
  93                 return $s;
  94         }
  95
  96         function endHistoryList()
  97         {
  98                 $last = wfMsg( "last" );
  99
 100                 $s = preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 101                 $s .= "</ul>\n";
 102                 return $s;
 103         }
 104
 105         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor )
 106         {
 107                 global $wgLang;
 108
 109                 $artname = Title::makeName( $ns, $ttl );
 110                 $last = wfMsg( "last" );
 111                 $cur = wfMsg( "cur" );
 112                 $cr = wfMsg( "currentrev" );
 113
 114                 if ( $oid && $this->lastline ) {
 115                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
 116                           $artname, $last, "diff=\\1&oldid={$oid}" ), $this->lastline );
 117                 } else {
 118                         $ret = "";
 119                 }
 120                 $dt = $wgLang->timeanddate( $ts, true );
 121
 122                 if ( $oid ) {
 123                         $q = "oldid={$oid}";
 124                 } else {
 125                         $q = "";
 126                 }
 127                 $link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
 128
 129                 if ( 0 == $u ) {
 130                         $ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( "Contributions" ),
 131                                 $ut, "target=" . $ut );
 132                 } else {
 133                         $ul = $this->mSkin->makeLink( $wgLang->getNsText(
 134                                 Namespace::getUser() ) . ":{$ut}", $ut );
 135                 }
 136
 137                 $s = "<li>";
 138                 if ( $oid ) {
 139                         $curlink = $this->mSkin->makeKnownLink( $artname, $cur,
 140                           "diff=0&oldid={$oid}" );
 141                 } else {
 142                         $curlink = $cur;
 143                 }
 144                 $s .= "({$curlink}) (!OLDID!{$oid}!) . .";
 145
 146                 $M = wfMsg( "minoreditletter" );
 147                 if ( $isminor ) {
 148                         $s .= " <strong>{$M}</strong>";
 149                 }
 150                 $s .= " {$link} . . {$ul}";
 151
 152                 if ( "" != $c && "*" != $c ) {
 153                         $s .= " <em>(" . wfEscapeHTML($c) . ")</em>";
 154                 }
 155                 $s .= "</li>\n";
 156
 157                 $this->lastline = $s;
 158                 return $ret;
 159         }
 160
 161 }
 162
 163 ?>