--- loncom/homework/outputtags.pm	2001/08/06 19:36:17	1.9
+++ loncom/homework/outputtags.pm	2002/11/21 22:35:32	1.23
@@ -1,10 +1,30 @@
-# The LON-CAPA output tags handler
+# The LearningOnline Network with CAPA 
+# tags that create controlled output
 #
-# Handles output tags.
+# $Id: outputtags.pm,v 1.23 2002/11/21 22:35:32 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
 #
-# YEAR=2001
-# 1/11,1/15,4/26,6/1,6/2 Guy Albertelli
-# 8/6 Scott Harrison
 
 package Apache::outputtags; 
 
@@ -12,59 +32,112 @@ use strict;
 use Apache::lonnet;
 use POSIX qw(strftime);
 
-# ======================================================================= BEGIN
-sub BEGIN {
-    &Apache::lonxml::register('Apache::outputtags',('displayduedate',
-						    'displaytitle'));
+BEGIN {
+    &Apache::lonxml::register('Apache::outputtags',('displayduedate','displaytitle','displayweight'));
+}
+
+sub initialize_outputtags {
+    %Apache::outputtags::showonce=();
 }
 
-# =============================== Start display due date (return scalar string)
 sub start_displayduedate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result;
+    if (exists($Apache::outputtags::showonce{'displayduedate'})) {
+	return '';
+    } else {
+	$Apache::outputtags::showonce{'displayduedate'}=1;
+    }
     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 $format = &Apache::lonxml::get_param('format',$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>';
-	} else {
-	    $result = '<table border="on"><tr><td>No due date set.</td></tr>'.
-		      '</table>';
-	}
+	$result ='<table border="on"><tr><td>Due '.
+	    &Apache::lonnavmaps::timeToHumanString($date).
+		'</td></tr></table>';
+#        } 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;
 }
 
-# ======================================================== End display due date
 sub end_displayduedate {
-    return '';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my @result;
+    if ($target eq 'edit') { $result[1]='no'; }
+    return @result;
 }
 
-# ================================== Start display title (return scalar string)
 sub start_displaytitle {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
-    my $result = '';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result='';
+    if (exists($Apache::outputtags::showonce{'displayduetitle'})) {
+	return '';
+    } else {
+	$Apache::outputtags::showonce{'displayduetitle'}=1;
+    }
     if ($target eq 'web') {
-	$result = "<h1>$Apache::lonhomework::name</h1>";
+	$result="<h1>$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;
+	$Apache::lonhomework::name=~s/&/\&/g;
+	$result='\vskip 0 mm\noindent\textbf{'.$Apache::lonhomework::name.'}\vskip 0 mm';
     }
     return $result;
 }
 
-# =========================================================== End display title
 sub end_displaytitle {
-  return '';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my @result;
+    if ($target eq 'edit') { $result[1]='no'; }
+    return @result;
 }
 
-1;
+sub start_displayweight {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+    my $result;
+    if (exists($Apache::outputtags::showonce{'displayweight'})) {
+	return '';
+    } else {
+	$Apache::outputtags::showonce{'displayweight'}=1;
+    }
+    my $status=$Apache::inputtags::status['-1'];
+    if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web' || $target eq 'tex')) {
+	my $id = $Apache::inputtags::part;
+	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
+	&Apache::lonxml::debug("duedatebox found $weight for $id");
+	if (!defined($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;
 __END__