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                 $counter = 1;
  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                                 $counter++
  91                         );
  92                 }
  93                 while ( $line = wfFetchObject( $res ) ) {
  94                         $s .= $this->historyLine(
  95                                 $line->old_timestamp, $line->old_user,
  96                                 $line->old_user_text, $namespace,
  97                                 $title, $line->old_id,
  98                                 $line->old_comment, ( $line->old_minor_edit > 0 ),
  99                                 $counter++
 100                         );
 101                 }
 102                 $s .= $this->endHistoryList( !$atend );
 103                 $s .= $numbar;
 104                 $wgOut->addHTML( $s );
 105                 wfProfileOut( $fname );
 106         }
 107
 108         function beginHistoryList()
 109         {
 110                 global $wgTitle;
 111                 $this->lastdate = $this->lastline = "";
 112                 $s = "\n<p>" . wfMsg( "histlegend" ).'</p>';
 113                 $s .="\n<form id=\"pagehistory\" name=\"pagehistory\" action=\"" . $wgTitle->getFullURL("-") . "\" method=\"get\">";
 114                 $s .= "<input type=\"hidden\" name=\"title\" value=\"".htmlspecialchars($wgTitle->getPrefixedDbKey())."\"/>\n";
 115                 $s .= "" . "\n<ul>";
 116                 return $s;
 117         }
 118
 119         function endHistoryList( $skip = false )
 120         {
 121                 $last = wfMsg( "last" );
 122
 123                 $s = $skip ? "" : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 124                 $s .= "</ul>\n";
 125                 if( $this->linesonpage > 1) {
 126                         $s .= '<button type="submit" accesskey="'.wfMsg('accesskey-compareselectedversions').
 127                         '" title="'.wfMsg('tooltip-compareselectedversions').'">'.wfMsg('compareselectedversions')."</button><br/><br/>\n";
 128                 }
 129                 $s .= "</form>\n";
 130                 return $s;
 131         }
 132
 133         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor, $counter = '' )
 134         {
 135                 global $wgLang;
 136
 137                 $artname = Title::makeName( $ns, $ttl );
 138                 $last = wfMsg( "last" );
 139                 $cur = wfMsg( "cur" );
 140                 $cr = wfMsg( "currentrev" );
 141
 142                 if ( $oid && $this->lastline ) {
 143                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
 144                           $artname, $last, "diff=\\1&oldid={$oid}",'' ,'' ,' tabindex="'.$counter.'"' ), $this->lastline );
 145                 } else {
 146                         $ret = "";
 147                 }
 148                 $dt = $wgLang->timeanddate( $ts, true );
 149
 150                 if ( $oid ) {
 151                         $q = "oldid={$oid}";
 152                 } else {
 153                         $q = "";
 154                 }
 155                 $link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
 156
 157                 if ( 0 == $u ) {
 158                         $ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( "Contributions" ),
 159                                 $ut, "target=" . $ut );
 160                 } else {
 161                         $ul = $this->mSkin->makeLink( $wgLang->getNsText(
 162                                 Namespace::getUser() ) . ":{$ut}", $ut );
 163                 }
 164
 165                 $s = "<li>";
 166                 if ( $oid ) {
 167                         $curlink = $this->mSkin->makeKnownLink( $artname, $cur,
 168                           "diff=0&oldid={$oid}" );
 169                 } else {
 170                         $curlink = $cur;
 171                 }
 172                 $arbitrary = "";
 173                 if( $this->linesonpage > 1) {
 174                         # XXX: move title texts to javascript
 175                         $checkmark = "";
 176                         if ( !$oid ) {
 177                                 $arbitrary = '<input type="radio" style="visibility:hidden" name="oldid" value="'.$oid.'" title="'.wfMsg('selectolderversionfordiff').'" />';
 178                                 $checkmark = ' checked="checked"';
 179                         } else {
 180                                 if( $counter == 2 ) $checkmark = ' checked="checked"';
 181                                 $arbitrary = '<input type="radio" name="oldid" value="'.$oid.'" title="'.wfMsg('selectolderversionfordiff').'"'.$checkmark.' />';
 182                                 $checkmark = '';
 183                         }
 184                         $arbitrary .= '<input type="radio" name="diff" value="'.$oid.'" title="'.wfMsg('selectnewerversionfordiff').'"'.$checkmark.' />';
 185                 }
 186                 $s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary {$link} <span class='user'>{$ul}</span>";
 187                 $s .= $isminor ? ' <span class="minor">'.wfMsg( "minoreditletter" ).'</span>': '' ;
 188
 189
 190                 if ( "" != $c && "*" != $c ) {
 191
 192                         $c = $this->mSkin->formatcomment($c);
 193                         $s .= " <em>(" . $c . ")</em>";
 194                 }
 195                 $s .= "</li>\n";
 196
 197                 $this->lastline = $s;
 198                 return $ret;
 199         }
 200
 201 }
 202
 203 ?>