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<?php
/* Page history
Split off from Article.php and Skin.php, 2003-12-22
*/
class PageHistory {
var $mArticle, $mTitle, $mSkin;
var $lastline, $lastdate;
var $linesonpage;
function PageHistory( $article ) {
$this->mArticle =& $article;
$this->mTitle =& $article->mTitle;
}
# This shares a lot of issues (and code) with Recent Changes
function history()
{
global $wgUser, $wgOut, $wgLang;
# If page hasn't changed, client can cache this
if( $wgOut->checkLastModified( $this->mArticle->getTimestamp() ) ){
# Client cache fresh and headers sent, nothing more to do.
return;
}
$fname = "PageHistory::history";
wfProfileIn( $fname );
$wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
$wgOut->setSubtitle( wfMsg( "revhistory" ) );
$wgOut->setArticleFlag( false );
$wgOut->setArticleRelated( true );
$wgOut->setRobotpolicy( "noindex,nofollow" );
if( $this->mTitle->getArticleID() == 0 ) {
$wgOut->addHTML( wfMsg( "nohistory" ) );
wfProfileOut( $fname );
return;
}
list( $limit, $offset ) = wfCheckLimits();
/* We have to draw the latest revision from 'cur' */
$rawlimit = $limit;
$rawoffset = $offset - 1;
if( 0 == $offset ) {
$rawlimit--;
$rawoffset = 0;
}
/* Check one extra row to see whether we need to show 'next' and diff links */
$limitplus = $rawlimit + 1;
$namespace = $this->mTitle->getNamespace();
$title = $this->mTitle->getText();
$sql = "SELECT old_id,old_user," .
"old_comment,old_user_text,old_timestamp,old_minor_edit ".
"FROM old USE INDEX (name_title_timestamp) " .
"WHERE old_namespace={$namespace} AND " .
"old_title='" . wfStrencode( $this->mTitle->getDBkey() ) . "' " .
"ORDER BY inverse_timestamp LIMIT $rawoffset, $limitplus";
$res = wfQuery( $sql, DB_READ, $fname );
$revs = wfNumRows( $res );
if( $revs < $limitplus ) // the sql above tries to fetch one extra
$this->linesonpage = $revs;
else
$this->linesonpage = $revs - 1;
$atend = ($revs < $limitplus);
$this->mSkin = $wgUser->getSkin();
$numbar = wfViewPrevNext(
$offset, $limit,
$this->mTitle->getPrefixedText(),
"action=history", $atend );
$s = $numbar;
$this->submitbuttonhtml = ( $this->linesonpage > 1) ? '<input class="historysubmit"
type="submit" accesskey="'.wfMsg('accesskey-compareselectedversions').
'" title="'.wfMsg('tooltip-compareselectedversions').'" value="'.wfMsg('compareselectedversions')."\" />" :
'';
$s .= $this->beginHistoryList();
$counter = 1;
if( $offset == 0 ){
$this->linesonpage++;
$s .= $this->historyLine(
$this->mArticle->getTimestamp(),
$this->mArticle->getUser(),
$this->mArticle->getUserText(), $namespace,
$title, 0, $this->mArticle->getComment(),
( $this->mArticle->getMinorEdit() > 0 ),
$counter++
);
}
while ( $line = wfFetchObject( $res ) ) {
$s .= $this->historyLine(
$line->old_timestamp, $line->old_user,
$line->old_user_text, $namespace,
$title, $line->old_id,
$line->old_comment, ( $line->old_minor_edit > 0 ),
$counter++
);
}
$s .= $this->endHistoryList( !$atend );
$s .= $numbar;
$wgOut->addHTML( $s );
wfProfileOut( $fname );
}
function beginHistoryList()
{
global $wgTitle;
$this->lastdate = $this->lastline = "";
$s = "\n<p>" . wfMsg( "histlegend" ).'</p>';
$s .="\n<form action=\"" . $wgTitle->escapeLocalURL( '-' ) . "\" method=\"get\">";
$s .= "<input type=\"hidden\" name=\"title\" value=\"".wfEscapeHTML($wgTitle->getPrefixedDbKey())."\"/>\n";
$s .= !empty($this->submitbuttonhtml) ? $this->submitbuttonhtml."\n":'';
$s .= "" . "\n<ul id=\"pagehistory\" >";
return $s;
}
function endHistoryList( $skip = false )
{
$last = wfMsg( "last" );
$s = $skip ? "" : preg_replace( "/!OLDID![0-9]+!/", $last, $this->lastline );
$s .= "</ul>";
$s .= !empty($this->submitbuttonhtml) ? $this->submitbuttonhtml."\n":'';
$s .= "</form>\n";
return $s;
}
function historyLine( $ts, $u, $ut, $ns, $ttl, $oid, $c, $isminor, $counter = '' )
{
global $wgLang;
$artname = Title::makeName( $ns, $ttl );
$last = wfMsg( "last" );
$cur = wfMsg( "cur" );
$cr = wfMsg( "currentrev" );
if ( $oid && $this->lastline ) {
$ret = preg_replace( "/!OLDID!([0-9]+)!/", $this->mSkin->makeKnownLink(
$artname, $last, "diff=\\1&oldid={$oid}",'' ,'' ,' tabindex="'.$counter.'"' ), $this->lastline );
} else {
$ret = "";
}
$dt = $wgLang->timeanddate( $ts, true );
if ( $oid ) {
$q = "oldid={$oid}";
} else {
$q = "";
}
$link = $this->mSkin->makeKnownLink( $artname, $dt, $q );
if ( 0 == $u ) {
$ul = $this->mSkin->makeKnownLink( $wgLang->specialPage( "Contributions" ),
$ut, "target=" . $ut );
} else {
$ul = $this->mSkin->makeLink( $wgLang->getNsText(
Namespace::getUser() ) . ":{$ut}", $ut );
}
$s = "<li>";
if ( $oid ) {
$curlink = $this->mSkin->makeKnownLink( $artname, $cur,
"diff=0&oldid={$oid}" );
} else {
$curlink = $cur;
}
$arbitrary = "";
if( $this->linesonpage > 1) {
# XXX: move title texts to javascript
$checkmark = "";
if ( !$oid ) {
$arbitrary = '<input type="radio" style="visibility:hidden" name="oldid" value="'.$oid.'" title="'.wfMsg('selectolderversionfordiff').'" />';
$checkmark = ' checked="checked"';
} else {
if( $counter == 2 ) $checkmark = ' checked="checked"';
$arbitrary = '<input type="radio" name="oldid" value="'.$oid.'" title="'.wfMsg('selectolderversionfordiff').'"'.$checkmark.' />';
$checkmark = '';
}
$arbitrary .= '<input type="radio" name="diff" value="'.$oid.'" title="'.wfMsg('selectnewerversionfordiff').'"'.$checkmark.' />';
}
$s .= "({$curlink}) (!OLDID!{$oid}!) $arbitrary {$link} <span class='user'>{$ul}</span>";
$s .= $isminor ? ' <span class="minor">'.wfMsg( "minoreditletter" ).'</span>': '' ;
if ( "" != $c && "*" != $c ) {
$c = $this->mSkin->formatcomment($c);
$s .= " <em>(" . $c . ")</em>";
}
$s .= "</li>\n";
$this->lastline = $s;
return $ret;
}
}
?>
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