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;
  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->setArticleRelated( true );
  35                 $wgOut->setRobotpolicy( "noindex,nofollow" );
  36
  37                 if( $this->mTitle->getArticleID() == 0 ) {
  38                         $wgOut->addHTML( wfMsg( "nohistory" ) );
  39                         wfProfileOut( $fname );
  40                         return;
  41                 }
  42
  43                 list( $limit, $offset ) = wfCheckLimits();
  44
  45                 /* We have to draw the latest revision from 'cur' */
  46                 $rawlimit = $limit;
  47                 $rawoffset = $offset - 1;
  48                 if( 0 == $offset ) {
  49                         $rawlimit--;
  50                         $rawoffset = 0;
  51                 }
  52                 /* Check one extra row to see whether we need to show 'next' and diff links */
  53                 $limitplus = $rawlimit + 1;
  54
  55                 $namespace = $this->mTitle->getNamespace();
  56                 $title = $this->mTitle->getText();
  57                 $sql = "SELECT old_id,old_user," .
  58                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
  59                   "FROM old USE INDEX (name_title_timestamp) " .
  60                   "WHERE old_namespace={$namespace} AND " .
  61                   "old_title='" . wfStrencode( $this->mTitle->getDBkey() ) . "' " .
  62                   "ORDER BY inverse_timestamp LIMIT $rawoffset, $limitplus";
  63                 $res = wfQuery( $sql, DB_READ, $fname );
  64
  65                 $revs = wfNumRows( $res );
  66                 $atend = ($revs < $limitplus);
  67
  68                 $this->mSkin = $wgUser->getSkin();
  69                 $numbar = wfViewPrevNext(
  70                         $offset, $limit,
  71                         $this->mTitle->getPrefixedText(),
  72                         "action=history", $atend );
  73                 $s = $numbar;
  74                 $s .= $this->beginHistoryList();
  75
  76                 if( $offset == 0 )
  77                 $s .= $this->historyLine( $this->mArticle->getTimestamp(), $this->mArticle->getUser(),
  78                   $this->mArticle->getUserText(), $namespace,
  79                   $title, 0, $this->mArticle->getComment(),
  80                   ( $this->mArticle->getMinorEdit() > 0 ) );
  81
  82                 while ( $line = wfFetchObject( $res ) ) {
  83                         $s .= $this->historyLine( $line->old_timestamp, $line->old_user,
  84                           $line->old_user_text, $namespace,
  85                           $title, $line->old_id,
  86                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
  87                 }
  88                 $s .= $this->endHistoryList( !$atend );
  89                 $s .= $numbar;
  90                 $wgOut->addHTML( $s );
  91                 wfProfileOut( $fname );
  92         }
  93
  94         function beginHistoryList()
  95         {
  96                 $this->lastdate = $this->lastline = "";
  97                 $s = "\n<p>" . wfMsg( "histlegend" ) . "\n<ul>";
  98                 return $s;
  99         }
 100
 101         function endHistoryList( $skip = false )
 102         {
 103                 $last = wfMsg( "last" );
 104
 105                 $s = $skip ? "" : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 106                 $s .= "</ul>\n";
 107                 return $s;
 108         }
 109
 110         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor )
 111         {
 112                 global $wgLang;
 113
 114                 $artname = Title::makeName( $ns, $ttl );
 115                 $last = wfMsg( "last" );
 116                 $cur = wfMsg( "cur" );
 117                 $cr = wfMsg( "currentrev" );
 118
 119                 if ( $oid && $this->lastline ) {
 120                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
 121                           $artname, $last, "diff=\\1&oldid={$oid}" ), $this->lastline );
 122                 } else {
 123                         $ret = "";
 124                 }
 125                 $dt = $wgLang->timeanddate( $ts, true );
 126
 127                 if ( $oid ) {
 128                         $q = "oldid={$oid}";
 129                 } else {
 130                         $q = "";
 131                 }
 132                 $link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
 133
 134                 if ( 0 == $u ) {
 135                         $ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( "Contributions" ),
 136                                 $ut, "target=" . $ut );
 137                 } else {
 138                         $ul = $this->mSkin->makeLink( $wgLang->getNsText(
 139                                 Namespace::getUser() ) . ":{$ut}", $ut );
 140                 }
 141
 142                 $s = "<li>";
 143                 if ( $oid ) {
 144                         $curlink = $this->mSkin->makeKnownLink( $artname, $cur,
 145                           "diff=0&oldid={$oid}" );
 146                 } else {
 147                         $curlink = $cur;
 148                 }
 149                 $s .= "({$curlink}) (!OLDID!{$oid}!) . .";
 150
 151                 $M = wfMsg( "minoreditletter" );
 152                 if ( $isminor ) {
 153                         $s .= " <strong>{$M}</strong>";
 154                 }
 155                 $s .= " {$link} . . {$ul}";
 156
 157                 if ( "" != $c && "*" != $c ) {
 158                         $s .= " <em>(" . wfEscapeHTML($c) . ")</em>";
 159                 }
 160                 $s .= "</li>\n";
 161
 162                 $this->lastline = $s;
 163                 return $ret;
 164         }
 165
 166 }
 167
 168 ?>