--- loncom/interface/lonchatfetch.pm	2006/03/23 22:32:10	1.20
+++ loncom/interface/lonchatfetch.pm	2006/06/28 23:56:09	1.28
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Chat Fetching
 #
-# $Id: lonchatfetch.pm,v 1.20 2006/03/23 22:32:10 albertel Exp $
+# $Id: lonchatfetch.pm,v 1.28 2006/06/28 23:56:09 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -33,11 +33,35 @@ use Apache::Constants qw(:common :http);
 use Apache::lontexconvert;
 use Apache::loncommon;
 use Apache::lonnet;
+use Apache::longroup;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+ 
 
 sub handler {
     my $r = shift;
 
-    if (! &Apache::lonnet::allowed('pch',$env{'request.course.id'}.
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+					    ['lastid','group']);
+    my ($group,$grouptitle);
+    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    if (defined($env{'form.group'})) {
+        $group = $env{'form.group'};
+        if ((! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
+				       $group)) &&
+           (! &Apache::lonnet::allowed('vcg',$env{'request.course.id'}))) {
+            return HTTP_NOT_ACCEPTABLE;
+        }
+        my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum,$group);
+        if (%curr_groups) {
+            my %group_info = 
+		&Apache::longroup::get_group_settings($curr_groups{$group});
+            $grouptitle = 
+		'<b>'.&unescape($group_info{description}).
+		'</b><br />';
+        }
+    } elsif (! &Apache::lonnet::allowed('pch',$env{'request.course.id'}.
              ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))
         ) {
         return HTTP_NOT_ACCEPTABLE;
@@ -56,13 +80,12 @@ sub handler {
 
 # ------------------------------------------------------------ retrieve entries
 
-    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
-    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
     my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
 
     my @entries=split(/\:/,
        &Apache::lonnet::reply(
-        "chatretr:$cdom:$cnum:$env{'user.domain'}:$env{'user.name'}",$chome));
+        "chatretr:$cdom:$cnum:$env{'user.domain'}:$env{'user.name'}:$group",
+        $chome));
 # Figure out what the last valid entry-id is
     my ($lastid,$thentime,$idnum);
     foreach (@entries) {
@@ -73,14 +96,8 @@ sub handler {
 	}
     }
 # ----------------------------------------------------------- Can see identity?
-    my $crs='/'.$env{'request.course.id'};
-    if ($env{'request.course.sec'}) {
-       $crs.='_'.$env{'request.course.sec'};
-    }                 
-    $crs=~s/\_/\//g;
-    my $seeid=&Apache::lonnet::allowed('rin',$crs);
+    my $seeid = &get_seeid_status();
 # -------------------------------------------------------- see which ones apply
-    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['lastid']);
     my $include=0;
     my $newstuff='';
     my $bottomid='';
@@ -91,10 +108,17 @@ sub handler {
 					   {'only_body' => 1,
 					    'bgcolor'   => '#FFFFFF',
 					    'js_ready'  => 1,});
+	# removing the CSS reference for now
+	# see BUG# 4839
+        # to fix, need to either write the whole webpage to the bottom frame
+        # everytime or store the page in a js variable somewhere.
+	# although in tryng both of these ideas, the .scroll to 
+	# the bottom seems to fail.
+	$newstuff =~ s|(<link.*?/>)||;
     }
     my @participants=();
     foreach (@entries) {
-	my ($id,$msg,$udom)=split(/\:/,&Apache::lonnet::unescape($_));
+	my ($id,$msg,$udom)=split(/\:/,&unescape($_));
  	if ($id eq 'active_participant') {
            chomp($udom);
 	   my $participant= &Apache::loncommon::nickname($msg,$udom);
@@ -104,8 +128,8 @@ sub handler {
 	    chomp($msg);
 	    my ($msgtime,$msgnum)=split(/\_/,$id);
 	    my ($sdom,$snum,$anon,$contrib)=split(/\:/,
-					     &Apache::lonnet::unescape($msg));
-	    $contrib=&Apache::lonnet::unescape($contrib);
+					     &unescape($msg));
+	    $contrib=&unescape($contrib);
 	    &Apache::lonfeedback::newline_to_br(\$contrib);
 	    ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
 	    if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
@@ -143,19 +167,23 @@ sub handler {
 	    $color=substr($color,0,6);
 	    my $timestamp=localtime($msgtime);
 	    my ($mhour,$mmin,$msec)=($timestamp=~/(\d\d)\:(\d\d)\:(\d\d)/);
-	    $newstuff.='<font color="#'.$color.'"><a name="'.$id.'"><b>'.
+	    $newstuff.='<font color="#'.$color.'"><a name="LC_'.$id.'"></a><b>'.
 		$sender.'</b> ('.$mhour.':'.$mmin.':'.$msec.'): '.
-		$contrib."</font><br>";
-	    $bottomid=$id;
+		$contrib."</font><br />";
+	    $bottomid='LC_'.$id;
 	} else {
 	    $_=~/^(\w+)/;
 	    if ($1 eq $env{'form.lastid'}) { $include=1; }
 	}
     }
     my $participant_output=join('<br />',sort @participants);
+    my $refresh_cmd = "/adm/chatfetch?lastid=$lastid";
+    if (defined($group)) {
+        $refresh_cmd .= "&amp;group=$group";
+    }
     my $start_page = 
 	&Apache::loncommon::start_page('Chat',undef,
-				       {'redirect'  => [5,"/adm/chatfetch?lastid=$lastid"],
+				       {'redirect'  => [5,$refresh_cmd],
 					'only_body' => 1,});
     my $end_page = &Apache::loncommon::end_page();
     $r->print(<<ENDDOCUMENT);
@@ -164,11 +192,27 @@ $start_page
 parent.chatout.document.writeln('$newstuff');
 parent.chatout.scroll(0,10000000);
 </script>
+$grouptitle
 $participant_output
 $end_page
 ENDDOCUMENT
     return OK;
-} 
+}
+
+sub get_seeid_status {
+    my $crs='/'.$env{'request.course.id'};
+    my $seeid;
+    if (exists($env{'form.group'})) {
+        $seeid = &Apache::lonnet::allowed('rci',$crs.'/'.$env{'form.group'});
+    } else {
+        if ($env{'request.course.sec'}) {
+            $crs.='_'.$env{'request.course.sec'};
+        }
+        $crs=~s/\_/\//g;
+        $seeid=&Apache::lonnet::allowed('rin',$crs);
+    }
+    return $seeid;
+}
 
 1;
 __END__