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         var $linesonpage;
  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
  67                 if( $revs < $limitplus ) // the sql above tries to fetch one extra
  68                         $this->linesonpage = $revs;
  69                 else
  70                         $this->linesonpage = $revs - 1;
  71
  72                 $atend = ($revs < $limitplus);
  73
  74                 $this->mSkin = $wgUser->getSkin();
  75                 $numbar = wfViewPrevNext(
  76                         $offset, $limit,
  77                         $this->mTitle->getPrefixedText(),
  78                         "action=history", $atend );
  79                 $s = $numbar;
  80                 $s .= $this->beginHistoryList();
  81
  82                 if( $offset == 0 ){
  83                         $this->linesonpage++;
  84                         $s .= $this->historyLine(
  85                                 $this->mArticle->getTimestamp(),
  86                                 $this->mArticle->getUser(),
  87                                 $this->mArticle->getUserText(), $namespace,
  88                                 $title, 0, $this->mArticle->getComment(),
  89                                 ( $this->mArticle->getMinorEdit() > 0 )
  90                         );
  91                 }
  92                 while ( $line = wfFetchObject( $res ) ) {
  93                         $s .= $this->historyLine( $line->old_timestamp, $line->old_user,
  94                           $line->old_user_text, $namespace,
  95                           $title, $line->old_id,
  96                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
  97                 }
  98                 $s .= $this->endHistoryList( !$atend );
  99                 $s .= $numbar;
 100                 $wgOut->addHTML( $s );
 101                 wfProfileOut( $fname );
 102         }
 103
 104         function beginHistoryList()
 105         {
 106                 global $wgTitle;
 107                 $this->lastdate = $this->lastline = "";
 108                 $s = "\n<script type='text/javascript'>
 109                         /*<![CDATA[*/
 110                         var sel = -1;
 111                         function anysel(oid){
 112                                 row = document.getElementById(\"ver\" + oid);
 113                                 if( row.selected ){
 114                                         row.style.backgroundColor=row.oldbg;
 115                                         row.selected = 0;
 116                                         sel = -1;
 117                                 } else {
 118                                         row.oldbg = row.style.backgroundColor;
 119                                         row.style.backgroundColor=\"lightgrey\";
 120                                         row.selected = 1;
 121                                         if( sel == -1){
 122                                                 sel = oid;
 123                                         } else {
 124                                                 dodiff(sel, oid);
 125                                         }
 126                                 }
 127                                 return false;
 128                         }
 129                         function dodiff(oldid, diff){
 130                                 if( (diff < oldid && diff != 0) || oldid == 0 ){
 131                                         tmp = oldid; oldid = diff; diff = tmp;
 132                                 }
 133                                 u = \"{$url}diff=\" + diff + \"&oldid=\" + oldid;
 134                                 location.href=u;
 135                         }
 136                         /*]]>*/
 137                 </script>";
 138                 $s .= "\n<p>" . wfMsg( "histlegend" ) . "</p>\n<ul class='special'>";
 139                 $url = $wgTitle->getFullURL("-");
 140                 return $s;
 141         }
 142
 143         function endHistoryList( $skip = false )
 144         {
 145                 $last = wfMsg( "last" );
 146
 147                 $s = $skip ? "" : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 148                 $s .= "</ul>\n";
 149                 return $s;
 150         }
 151
 152         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor )
 153         {
 154                 global $wgLang;
 155
 156                 $artname = Title::makeName( $ns, $ttl );
 157                 $last = wfMsg( "last" );
 158                 $cur = wfMsg( "cur" );
 159                 $cr = wfMsg( "currentrev" );
 160
 161                 if ( $oid && $this->lastline ) {
 162                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
 163                           $artname, $last, "diff=\\1&oldid={$oid}" ), $this->lastline );
 164                 } else {
 165                         $ret = "";
 166                 }
 167                 $dt = $wgLang->timeanddate( $ts, true );
 168
 169                 if ( $oid ) {
 170                         $q = "oldid={$oid}";
 171                 } else {
 172                         $q = "";
 173                 }
 174                 $link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
 175
 176                 if ( 0 == $u ) {
 177                         $ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( "Contributions" ),
 178                                 $ut, "target=" . $ut );
 179                 } else {
 180                         $ul = $this->mSkin->makeLink( $wgLang->getNsText(
 181                                 Namespace::getUser() ) . ":{$ut}", $ut );
 182                 }
 183
 184                 $s = "<li>";
 185                 if ( $oid ) {
 186                         $curlink = $this->mSkin->makeKnownLink( $artname, $cur,
 187                           "diff=0&oldid={$oid}" );
 188                 } else {
 189                         $curlink = $cur;
 190                 }
 191                 $arbitrary = "";
 192                 if( $this->linesonpage > 1)
 193                         $arbitrary = "<input type='checkbox' onclick='anysel($oid)' title='Select any two versions to diff them' />";
 194                 $s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary . .";
 195                 $M = wfMsg( "minoreditletter" );
 196                 if ( $isminor ) {
 197                         $s .= " <strong>{$M}</strong>";
 198                 }
 199                 $s .= " <span id='ver$oid'>{$link} . . {$ul}</span>";
 200
 201                 if ( "" != $c && "*" != $c ) {
 202
 203                         $c = $this->mSkin->formatcomment($c);
 204                         $s .= " <em>(" . $c . ")</em>";
 205                 }
 206                 $s .= "</li>\n";
 207
 208                 $this->lastline = $s;
 209                 return $ret;
 210         }
 211
 212 }
 213
 214 ?>