includes/PageHistory.php

   1 <?php
   2 /**
   3  * Page history
   4  *
   5  * Split off from Article.php and Skin.php, 2003-12-22
   6  */
   7
   8 /**
   9  * @todo document
  10  */
  11 class PageHistory {
  12         var $mArticle, $mTitle, $mSkin;
  13         var $lastline, $lastdate;
  14         var $linesonpage;
  15         function PageHistory( $article ) {
  16                 $this->mArticle =& $article;
  17                 $this->mTitle =& $article->mTitle;
  18         }
  19
  20         # This shares a lot of issues (and code) with Recent Changes
  21
  22         function history() {
  23                 global $wgUser, $wgOut, $wgLang;
  24
  25                 # If page hasn't changed, client can cache this
  26
  27                 if( $wgOut->checkLastModified( $this->mArticle->getTimestamp() ) ){
  28                         # Client cache fresh and headers sent, nothing more to do.
  29                         return;
  30                 }
  31                 $fname = 'PageHistory::history';
  32                 wfProfileIn( $fname );
  33
  34                 $wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
  35                 $wgOut->setSubtitle( wfMsg( 'revhistory' ) );
  36                 $wgOut->setArticleFlag( false );
  37                 $wgOut->setArticleRelated( true );
  38                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
  39
  40                 if( $this->mTitle->getArticleID() == 0 ) {
  41                         $wgOut->addHTML( wfMsg( 'nohistory' ) );
  42                         wfProfileOut( $fname );
  43                         return;
  44                 }
  45
  46                 list( $limit, $offset ) = wfCheckLimits();
  47
  48                 /* We have to draw the latest revision from 'cur' */
  49                 $rawlimit = $limit;
  50                 $rawoffset = $offset - 1;
  51                 if( 0 == $offset ) {
  52                         $rawlimit--;
  53                         $rawoffset = 0;
  54                 }
  55                 /* Check one extra row to see whether we need to show 'next' and diff links */
  56                 $limitplus = $rawlimit + 1;
  57
  58                 $namespace = $this->mTitle->getNamespace();
  59                 $title = $this->mTitle->getText();
  60
  61                 $db =& wfGetDB( DB_SLAVE );
  62                 $use_index = $db->useIndexClause( 'name_title_timestamp' );
  63                 $oldtable = $db->tableName( 'old' );
  64
  65                 $sql = "SELECT old_id,old_user," .
  66                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
  67                   "FROM $oldtable $use_index " .
  68                   "WHERE old_namespace={$namespace} AND " .
  69                   "old_title='" . $db->strencode( $this->mTitle->getDBkey() ) . "' " .
  70                   "ORDER BY inverse_timestamp".$db->limitResult($limitplus,$rawoffset);
  71                 $res = $db->query( $sql, $fname );
  72
  73                 $revs = $db->numRows( $res );
  74
  75                 if( $revs < $limitplus ) // the sql above tries to fetch one extra
  76                         $this->linesonpage = $revs;
  77                 else
  78                         $this->linesonpage = $revs - 1;
  79
  80                 $atend = ($revs < $limitplus);
  81
  82                 $this->mSkin = $wgUser->getSkin();
  83                 $numbar = wfViewPrevNext(
  84                         $offset, $limit,
  85                         $this->mTitle->getPrefixedText(),
  86                         'action=history', $atend );
  87                 $s = $numbar;
  88                 if($this->linesonpage > 0) {
  89                         $submitpart1 = '<input class="historysubmit" type="submit" accesskey="'.wfMsg('accesskey-compareselectedversions').
  90                         '" title="'.wfMsg('tooltip-compareselectedversions').'" value="'.wfMsg('compareselectedversions').'"';
  91                         $this->submitbuttonhtml1 = $submitpart1 . ' />';
  92                         $this->submitbuttonhtml2 = $submitpart1 . ' id="historysubmit" />';
  93                 }
  94                 $s .= $this->beginHistoryList();
  95                 $counter = 1;
  96                 if( $offset == 0 ){
  97                         $this->linesonpage++;
  98                         $s .= $this->historyLine(
  99                                 $this->mArticle->getTimestamp(),
 100                                 $this->mArticle->getUser(),
 101                                 $this->mArticle->getUserText(), $namespace,
 102                                 $title, 0, $this->mArticle->getComment(),
 103                                 ( $this->mArticle->getMinorEdit() > 0 ),
 104                                 $counter++
 105                         );
 106                 }
 107                 while ( $line = $db->fetchObject( $res ) ) {
 108                         $s .= $this->historyLine(
 109                                 $line->old_timestamp, $line->old_user,
 110                                 $line->old_user_text, $namespace,
 111                                 $title, $line->old_id,
 112                                 $line->old_comment, ( $line->old_minor_edit > 0 ),
 113                                 $counter++
 114                         );
 115                 }
 116                 $s .= $this->endHistoryList( !$atend );
 117                 $s .= $numbar;
 118                 $wgOut->addHTML( $s );
 119                 wfProfileOut( $fname );
 120         }
 121
 122         function beginHistoryList() {
 123                 global $wgTitle;
 124                 $this->lastdate = $this->lastline = '';
 125                 $s = '<p>' . wfMsg( 'histlegend' ) . '</p>';
 126                 $s .= '<form action="' . $wgTitle->escapeLocalURL( '-' ) . '" method="get">';
 127                 $prefixedkey = htmlspecialchars($wgTitle->getPrefixedDbKey());
 128                 $s .= "<input type='hidden' name='title' value='{$prefixedkey}' />\n";
 129                 $s .= !empty($this->submitbuttonhtml1) ? $this->submitbuttonhtml1."\n":'';
 130                 $s .= '<ul id="pagehistory">';
 131                 return $s;
 132         }
 133
 134         function endHistoryList( $skip = false ) {
 135                 $last = wfMsg( 'last' );
 136
 137                 $s = $skip ? '' : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
 138                 $s .= '</ul>';
 139                 $s .= !empty($this->submitbuttonhtml2) ? $this->submitbuttonhtml2 : '';
 140                 $s .= '</form>';
 141                 return $s;
 142         }
 143
 144         function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor, $counter = '' ) {
 145                 global $wgLang;
 146
 147                 $artname = Title::makeName( $ns, $ttl );
 148                 $last = wfMsg( 'last' );
 149                 $cur = wfMsg( 'cur' );
 150                 $cr = wfMsg( 'currentrev' );
 151
 152                 if ( $oid && $this->lastline ) {
 153                         $ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
 154                           $artname, $last, "diff=\\1&oldid={$oid}",'' ,'' ,' tabindex="'.$counter.'"' ), $this->lastline );
 155                 } else {
 156                         $ret = '';
 157                 }
 158                 $dt = $wgLang->timeanddate( $ts, true );
 159
 160                 if ( $oid ) {
 161                         $q = 'oldid='.$oid;
 162                 } else {
 163                         $q = '';
 164                 }
 165                 $link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
 166
 167                 if ( 0 == $u ) {
 168                         $ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( 'Contributions' ),
 169                                 htmlspecialchars( $ut ), 'target=' . urlencode( $ut ) );
 170                 } else {
 171                         $ul = $this->mSkin->makeLink( $wgLang->getNsText(
 172                                 Namespace::getUser() ) . ':'.$ut , htmlspecialchars( $ut ) );
 173                 }
 174
 175                 $s = '<li>';
 176                 if ( $oid ) {
 177                         $curlink = $this->mSkin->makeKnownLink( $artname, $cur,
 178                           'diff=0&oldid='.$oid );
 179                 } else {
 180                         $curlink = $cur;
 181                 }
 182                 $arbitrary = '';
 183                 if( $this->linesonpage > 1) {
 184                         # XXX: move title texts to javascript
 185                         $checkmark = '';
 186                         if ( !$oid ) {
 187                                 $arbitrary = '<input type="radio" style="visibility:hidden" name="oldid" value="'.$oid.'" title="'.wfMsg('selectolderversionfordiff').'" />';
 188                                 $checkmark = ' checked="checked"';
 189                         } else {
 190                                 if( $counter == 2 ) $checkmark = ' checked="checked"';
 191                                 $arbitrary = '<input type="radio" name="oldid" value="'.$oid.'" title="'.wfMsg('selectolderversionfordiff').'"'.$checkmark.' />';
 192                                 $checkmark = '';
 193                         }
 194                         $arbitrary .= '<input type="radio" name="diff" value="'.$oid.'" title="'.wfMsg('selectnewerversionfordiff').'"'.$checkmark.' />';
 195                 }
 196                 $s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary {$link} <span class='user'>{$ul}</span>";
 197                 $s .= $isminor ? ' <span class="minor">'.wfMsg( "minoreditletter" ).'</span>': '' ;
 198
 199
 200                 if ( '' != $c && '*' != $c ) {
 201                         $c = $this->mSkin->formatcomment($c,$this->mTitle);
 202                         $s .= " <em>($c)</em>";
 203                 }
 204                 $s .= '</li>';
 205
 206                 $this->lastline = $s;
 207                 return $ret;
 208         }
 209
 210 }
 211
 212 ?>