--- loncom/interface/lonchatfetch.pm	2006/06/27 00:12:23	1.27
+++ loncom/interface/lonchatfetch.pm	2006/11/29 19:45:55	1.32
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Chat Fetching
 #
-# $Id: lonchatfetch.pm,v 1.27 2006/06/27 00:12:23 albertel Exp $
+# $Id: lonchatfetch.pm,v 1.32 2006/11/29 19:45:55 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -34,6 +34,7 @@ use Apache::lontexconvert;
 use Apache::loncommon;
 use Apache::lonnet;
 use Apache::longroup;
+use Apache::lonlocal;
 use lib '/home/httpd/lib/perl/';
 use LONCAPA;
  
@@ -48,8 +49,10 @@ sub handler {
     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'}.'/'.
-				       $group) ) {
+        if ((! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
+				       $group)) &&
+           (! &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.
+         ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
             return HTTP_NOT_ACCEPTABLE;
         }
         my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum,$group);
@@ -87,8 +90,8 @@ sub handler {
         $chome));
 # Figure out what the last valid entry-id is
     my ($lastid,$thentime,$idnum);
-    foreach (@entries) {
-	$_=~/^(\w+)/;
+    foreach my $entry (@entries) {
+	$entry =~/^(\w+)/;
         if ($1 ne 'active_participant') {
 	    $lastid=$1;
             ($thentime,$idnum)=split(/\_/,$lastid);
@@ -98,30 +101,24 @@ sub handler {
     my $seeid = &get_seeid_status();
 # -------------------------------------------------------- see which ones apply
     my $include=0;
+    my $header;
     my $newstuff='';
     my $bottomid='';
     unless ($env{'form.lastid'}) { 
 	$include=1; 
-	$newstuff .=
+	$header = 
 	    &Apache::loncommon::start_page(undef,undef,
 					   {'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(/\:/,&unescape($_));
+    foreach my $entry (@entries) {
+	my ($id,$msg,$udom)=split(/\:/,&unescape($entry));
  	if ($id eq 'active_participant') {
            chomp($udom);
 	   my $participant= &Apache::loncommon::nickname($msg,$udom);
-	   unless ($participant=~/\w/) { $participant=$msg.'@'.$udom; }
+	   unless ($participant=~/\w/) { $participant=$msg.':'.$udom; }
 	   $participants[$#participants+1]=$participant;
 	} elsif ($include) {
 	    chomp($msg);
@@ -131,10 +128,10 @@ sub handler {
 	    $contrib=&unescape($contrib);
 	    &Apache::lonfeedback::newline_to_br(\$contrib);
 	    ($contrib,my $errors)=&Apache::lontexconvert::msgtexconverted($contrib);
-	    if ($errors) { $contrib.="[Message not fully displayed due to incorrect embedded TeX]"; }
+	    if ($errors) { $contrib.=&mt('[Message not fully displayed due to incorrect embedded TeX]'); }
 	    if ($errors && $snum eq $env{'user.name'} &&
 		$sdom eq $env{'user.domain'} ) {
-		$contrib.="<br />[TeX error message: $errors]";
+		$contrib.='<br />'.&mt('[TeX error message: [_1]',$errors);
 	    }
 	    $contrib=~s/\n/ /g;
 	    $contrib=~s/\'/\&\#39\;/g;
@@ -145,14 +142,14 @@ sub handler {
 		if (($nick) && ($nick ne $sender)) {
 		    $sender.=' '.$nick;
 		}
-		unless ($sender) { $sender=$snum.'@'.$sdom; }
+		unless ($sender) { $sender=$snum.':'.$sdom; }
 		if ($anon) { $sender.=' [Anon]' };
 	    } elsif (!$anon) {
 		$sender=&Apache::loncommon::nickname($snum,$sdom);
-		unless ($sender) { $sender=$snum.'@'.$sdom; }
+		unless ($sender) { $sender=$snum.':'.$sdom; }
 	    } else {
 		$sender=&Apache::loncommon::screenname($snum,$sdom);
-		unless ($sender) { $sender="Anonymous"; }
+		unless ($sender) { $sender=&mt("Anonymous"); }
 	    }
 	    $sender=~s/\'/\&\#39\;/g;
 	    my $color=$sender;
@@ -171,7 +168,7 @@ sub handler {
 		$contrib."</font><br />";
 	    $bottomid='LC_'.$id;
 	} else {
-	    $_=~/^(\w+)/;
+	    $entry=~/^(\w+)/;
 	    if ($1 eq $env{'form.lastid'}) { $include=1; }
 	}
     }
@@ -180,15 +177,21 @@ sub handler {
     if (defined($group)) {
         $refresh_cmd .= "&amp;group=$group";
     }
-    my $start_page = 
-	&Apache::loncommon::start_page('Chat',undef,
-				       {'redirect'  => [5,$refresh_cmd],
-					'only_body' => 1,});
+    my $headarg;
+    my ($blocked,$blocktext) = &blockstatus();
+    if ($blocked) {
+        $newstuff = $blocktext;
+        $headarg =  {'only_body' => 1,};
+    } else {
+        $headarg = {'redirect'  => [5,$refresh_cmd,1],
+                                    'only_body' => 1,};
+    }
+    my $start_page = &Apache::loncommon::start_page('Chat',undef,$headarg); 
     my $end_page = &Apache::loncommon::end_page();
     $r->print(<<ENDDOCUMENT);
 $start_page
 <script type="text/javascript">
-parent.chatout.document.writeln('$newstuff');
+parent.chatout.document.writeln('$header$newstuff');
 parent.chatout.scroll(0,10000000);
 </script>
 $grouptitle
@@ -213,5 +216,28 @@ sub get_seeid_status {
     return $seeid;
 }
 
+sub blockstatus {
+    my ($blocked,$output);
+    my %setters;
+    my ($startblock,$endblock) = &Apache::loncommon::blockcheck(\%setters,'chat');
+    if ($startblock && $endblock) {
+        $blocked = 1;
+        my $endblocktime = &Apache::lonlocal::locallocaltime($endblock);
+        $output .= &mt('Chat will be unavailable to you until [_1] because communication is blocked in one or more of your courses: <br/><br />',$endblocktime); 
+        foreach my $course (keys(%setters)) {
+            my %courseinfo=&Apache::lonnet::coursedescription($course);
+            for (my $i=0; $i<@{$setters{$course}{staff}}; $i++) {
+                my ($uname,$udom) = @{$setters{$course}{staff}[$i]};
+                my $fullname = &Apache::loncommon::plainname($uname,$udom);
+                my ($openblock,$closeblock) = @{$setters{$course}{times}[$i]};
+                $openblock = &Apache::lonlocal::locallocaltime($openblock);
+                $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
+                $output .= &mt('Block for [_1] starts: [_2], ends [_3], set by: [_4]<br />',$courseinfo{'description'},$openblock,$closeblock,$fullname);
+            }
+        }
+    }
+    return ($blocked,$output);
+}
+
 1;
 __END__