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