--- loncom/homework/outputtags.pm	2002/08/07 17:39:42	1.18
+++ loncom/homework/outputtags.pm	2003/09/08 18:36:39	1.32
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # tags that create controlled output
 #
-# $Id: outputtags.pm,v 1.18 2002/08/07 17:39:42 sakharuk Exp $
+# $Id: outputtags.pm,v 1.32 2003/09/08 18:36:39 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -33,66 +33,153 @@ use Apache::lonnet;
 use POSIX qw(strftime);
 
 BEGIN {
-  &Apache::lonxml::register('Apache::outputtags',('displayduedate','displaytitle'));
+    &Apache::lonxml::register('Apache::outputtags',('displayduedate','displaytitle','displayweight'));
+}
+
+sub initialize_outputtags {
+    %Apache::outputtags::showonce=();
 }
 
 sub start_displayduedate {
-  my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-  my $result;
-  my $status=$Apache::inputtags::status['-1'];
-  &Apache::lonxml::debug("got a $status in duedatebox");
-  if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {
-    my $format = &Apache::lonxml::get_param('format',$parstack,$safeeval);
-    if ($format eq '') {
-      &Apache::lonxml::debug("using default format");
-      $format="%c";
-    }
-    my $id = $Apache::inputtags::part;
-    my $date = &Apache::lonnet::EXT("resource.$id.duedate");
-    &Apache::lonxml::debug("duedatebox found $date for $id");
-    if ($date) {
-       $result ='<table border="on"><tr><td>Due at '.
-         POSIX::strftime($format,localtime($date)).
-	   '</td></tr></table>';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result;
+    if (exists($Apache::outputtags::showonce{'displayduedate'})) {
+	return '';
     } else {
-      $result ='<table border="on"><tr><td>No due date set.</td></tr></table>';
+	$Apache::outputtags::showonce{'displayduedate'}=1;
     }
-  } elsif ( $target eq 'edit' ) {
-    $result=&Apache::edit::tag_start($target,$token);
-    $result.='</td></tr>';
-    $result.=&Apache::edit::end_table();
-  }
-  return $result;
+    my $status=$Apache::inputtags::status['-1'];
+    &Apache::lonxml::debug("got a $status in duedatebox");
+    my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval);
+    if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {
+#	my $format = &Apache::lonxml::get_param('format',$parstack,$safeeval);
+#	if ($format eq '') {
+#	    &Apache::lonxml::debug("using default format");
+#	    $format="%c";
+#	}
+	my $id = $Apache::inputtags::part;
+	my $date = &Apache::lonnet::EXT("resource.$id.duedate");
+	&Apache::lonxml::debug("duedatebox found $date for $id");
+	if (lc($style) !~ 'plain') { 
+	    $result ='<table border="on"><tr><td>Due '.
+		&Apache::lonnavmaps::timeToHumanString($date).
+		'</td></tr></table>';
+	} else {
+	    $result='Due '.&Apache::lonnavmaps::timeToHumanString($date);
+	}
+#        } else {
+#	    $result ='<table border="on"><tr><td>No due date set.</td></tr></table>';
+#	}
+    } elsif ( $target eq 'edit' ) {
+	$result=&Apache::edit::tag_start($target,$token);
+	$result.='</td></tr>';
+	$result.=&Apache::edit::end_table();
+    }
+    return $result;
 }
 
 sub end_displayduedate {
-  my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-  my @result;
-  if ($target eq 'edit') { $result[1]='no'; }
-  return @result;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my @result;
+    if ($target eq 'edit') { $result[1]='no'; }
+    return @result;
 }
 
 sub start_displaytitle {
-  my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-  my $result='';
-  if ($target eq 'web') {
-    $result="<h1>$Apache::lonhomework::name</h1>";
-  } elsif ($target eq 'edit') {
-    $result=&Apache::edit::tag_start($target,$token);
-    $result.='</td></tr>';
-    $result.=&Apache::edit::end_table();
-  } elsif ($target eq 'tex') {
-      $Apache::lonhomework::name=~s/&/\&/g;
-      $result='\vskip 0 mm\noindent\textbf{'.$Apache::lonhomework::name.'}\vskip 0 mm';
-  }
-  return $result;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result='';
+    if (exists($Apache::outputtags::showonce{'displayduetitle'})) {
+	return '';
+    } else {
+	$Apache::outputtags::showonce{'displayduetitle'}=1;
+    }
+    my $name=&Apache::structuretags::get_resource_name();
+    my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval);
+    if ($target eq 'web') {
+	$result=$name;
+	if (lc($style) !~ 'plain') { $result="<h1>$name</h1>"; }
+    } elsif ($target eq 'edit') {
+	$result=&Apache::edit::tag_start($target,$token);
+	$result.='</td></tr>';
+	$result.=&Apache::edit::end_table();
+    } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
+	$name=&Apache::lonxml::latex_special_symbols($name);
+	if (lc($style) !~ 'plain') { 
+	    $result='\vskip 0 mm\noindent\textbf{'.$name.'}\vskip 0 mm';
+	} else {
+	    $result=$name;
+	}
+    }
+    return $result;
 }
 
 sub end_displaytitle {
-  my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-  my @result;
-  if ($target eq 'edit') { $result[1]='no'; }
-  return @result;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my @result;
+    if ($target eq 'edit') { $result[1]='no'; }
+    return @result;
+}
+
+sub multipart {
+    my ($uri)=@_;
+    if (!defined($uri)) { $uri=$ENV{'request.uri'}; }
+    my @parts;
+    my $metadata = &Apache::lonnet::metadata($uri,'packages');
+    foreach (split(/\,/,$metadata)) {
+	if ($_ =~ /^part_(.*)$/) {
+	    my $part = $1;
+	    if ($part ne '0') { push(@parts,$part); }
+	}
+    }
+    return @parts;
+}
+
+sub start_displayweight {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result;
+    if (exists($Apache::outputtags::showonce{'displayweight'})) {
+	if(grep(/^\Q$Apache::inputtags::part\E$/,
+		@{$Apache::outputtags::showonce{'displayweight'}})) {
+	    return '';
+	}
+    }
+    push(@{$Apache::outputtags::showonce{'displayweight'}},
+	 $Apache::inputtags::part);
+    my $status=$Apache::inputtags::status['-1'];
+    if ($target eq 'web' || $target eq 'tex') {
+	my $id = $Apache::inputtags::part;
+	if ($id ne '0') {
+	    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
+	    if (!defined($weight) || ($weight eq '')) { $weight=1; }
+	    $result.=$weight;
+	} else {
+	    my @parts=&multipart($ENV{'request.uri'});
+	    my $weight;
+	    if (@parts) {
+	        foreach my $part (@parts) {
+		    my $pweight=&Apache::lonnet::EXT("resource.$part.weight");
+		    if (!defined($pweight) || ($pweight eq '')) { $pweight=1; }
+		    $weight+=$pweight;
+	        }
+	    } else {
+		$weight = &Apache::lonnet::EXT("resource.$id.weight");
+                if (!defined($weight) || ($weight eq '')) { $weight=1; }
+	    }
+	    $result=$weight;
+	}
+    } elsif ( $target eq 'edit' ) {
+	$result=&Apache::edit::tag_start($target,$token);
+	$result.='</td></tr>';
+	$result.=&Apache::edit::end_table();
+    }
+    return $result;
+}
+
+sub end_displayweight {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my @result;
+    if ($target eq 'edit') { $result[1]='no'; }
+    return @result;
 }
 
 1;