File:  [LON-CAPA] / loncom / interface / lonparmset.pm
Revision 1.70: download - view: text, annotated - select for diffs
Tue Oct 1 06:21:23 2002 UTC (21 years, 7 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- fixes BUG#799, &EXT seems to not properly handle a
resource.0.weight.type request

# The LearningOnline Network with CAPA
# Handler to set parameters for assessments
#
# $Id: lonparmset.pm,v 1.70 2002/10/01 06:21:23 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/
#
###################################################################
###################################################################

=pod

=head1 NAME

lonparmset - Handler to set parameters for assessments and course

=head1 SYNOPSIS

lonparmset provides an interface to setting course parameters. 

=head1 DESCRIPTION

This module sets coursewide and assessment parameters.

=head1 INTERNAL SUBROUTINES

=over 4

=cut

###################################################################
###################################################################

package Apache::lonparmset;

use strict;
use Apache::lonnet;
use Apache::Constants qw(:common :http REDIRECT);
use Apache::loncommon;
use GDBM_File;
use Apache::lonhomework;
use Apache::lonxml;


my %courseopt;
my %useropt;
my %parmhash;

my @ids;
my %symbp;
my %mapp;
my %typep;
my %keyp;

my $uname;
my $udom;
my $uhome;
my $csec;
my $coursename;

##################################################
##################################################

=pod

=item parmval

Figure out a cascading parameter.

Inputs:  $what $id $def

Returns: I am not entirely sure.

=cut

##################################################
##################################################
sub parmval {
    my ($what,$id,$def)=@_;
    my $result='';
    my @outpar=();
# ----------------------------------------------------- Cascading lookup scheme

    my $symbparm=$symbp{$id}.'.'.$what;
    my $mapparm=$mapp{$id}.'___(all).'.$what;

    my $seclevel=$ENV{'request.course.id'}.'.['.$csec.'].'.$what;
    my $seclevelr=$ENV{'request.course.id'}.'.['.$csec.'].'.$symbparm;
    my $seclevelm=$ENV{'request.course.id'}.'.['.$csec.'].'.$mapparm;

    my $courselevel=$ENV{'request.course.id'}.'.'.$what;
    my $courselevelr=$ENV{'request.course.id'}.'.'.$symbparm;
    my $courselevelm=$ENV{'request.course.id'}.'.'.$mapparm;

# -------------------------------------------------------- first, check default

    if ($def) { $outpar[11]=$def; $result=11; }

# ----------------------------------------------------- second, check map parms

    my $thisparm=$parmhash{$symbparm};
    if ($thisparm) { $outpar[10]=$thisparm; $result=10; }

# --------------------------------------------------------- third, check course

    if ($courseopt{$courselevel}) {
	$outpar[9]=$courseopt{$courselevel};
	$result=9;
    }

    if ($courseopt{$courselevelm}) {
	$outpar[8]=$courseopt{$courselevelm};
	$result=8;
    }

    if ($courseopt{$courselevelr}) {
	$outpar[7]=$courseopt{$courselevelr};
	$result=7;
    }

    if ($csec) {
        if ($courseopt{$seclevel}) {
	    $outpar[6]=$courseopt{$seclevel};
	    $result=6;
	}
        if ($courseopt{$seclevelm}) {
	    $outpar[5]=$courseopt{$seclevelm};
	    $result=5;
	}

        if ($courseopt{$seclevelr}) {
	    $outpar[4]=$courseopt{$seclevelr};
	    $result=4;
	}
    }

# ---------------------------------------------------------- fourth, check user

    if ($uname) {
	if ($useropt{$courselevel}) {
	    $outpar[3]=$useropt{$courselevel};
	    $result=3;
	}

	if ($useropt{$courselevelm}) {
	    $outpar[2]=$useropt{$courselevelm};
	    $result=2;
	}

	if ($useropt{$courselevelr}) {
	    $outpar[1]=$useropt{$courselevelr};
	    $result=1;
	}
    }

    return ($result,@outpar);
}

##################################################
##################################################

=pod

=item valout

Format a value for output.

Inputs:  $value, $type

Returns: $value, formatted for output.  If $type indicates it is a date,
localtime($value) is returned.

=cut

##################################################
##################################################
sub valout {
    my ($value,$type)=@_;
    my $result = '';
    # Values of zero are valid.
    if (! $value && $value ne '0') {
        $result = '  ';
    } else {
        if ($type eq 'date_interval') {
            my ($sec,$min,$hour,$mday,$mon,$year)=gmtime($value);
            $year=$year-70;
            $mday--;
            if ($year) {
		$result.=$year.' yrs ';
            }
            if ($mon) {
		$result.=$mon.' mths ';
            }
            if ($mday) {
		$result.=$mday.' days ';
            }
            if ($hour) {
		$result.=$hour.' hrs ';
            }
            if ($min) {
		$result.=$min.' mins ';
            }
            if ($sec) {
		$result.=$sec.' secs ';
            }
            $result=~s/\s+$//;
        } elsif ($type=~/^date/) {
            $result = localtime($value);
        } else {
            $result = $value;
        }
    }
    return $result;
}

##################################################
##################################################

=pod

=item plink

Produces a link anchor.

Inputs: $type,$dis,$value,$marker,$return,$call

Returns: scalar with html code for a link which will envoke the 
javascript function 'pjump'.

=cut

##################################################
##################################################
sub plink {
    my ($type,$dis,$value,$marker,$return,$call)=@_;
    my $winvalue=$value;
    unless ($winvalue) {
	if ($type=~/^date/) {
            $winvalue=$ENV{'form.recent_'.$type};
        } else {
            $winvalue=$ENV{'form.recent_'.(split(/\_/,$type))[0]};
        }
    }
    return 
	'<a href="javascript:pjump('."'".$type."','".$dis."','".$winvalue."','"
	    .$marker."','".$return."','".$call."'".');">'.
		&valout($value,$type).'</a><a name="'.$marker.'"></a>';
}


sub startpage {
    my ($r,$id,$udom,$csec,$uname)=@_;
    $r->content_type('text/html');
    $r->send_http_header;
 
    my $bodytag=&Apache::loncommon::bodytag('Set Course Parameters','',
                                            'onUnload="pclose()"');
    $r->print(<<ENDHEAD);
<html>
<head>
<title>LON-CAPA Course Parameters</title>
<script>

    function pclose() {
        parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
                 "height=350,width=350,scrollbars=no,menubar=no");
        parmwin.close();
    }

    function pjump(type,dis,value,marker,ret,call) {
        document.parmform.pres_marker.value='';
        parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
                 +"&value="+escape(value)+"&marker="+escape(marker)
                 +"&return="+escape(ret)
                 +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
                 "height=350,width=350,scrollbars=no,menubar=no");

    }

    function psub() {
        pclose();
        if (document.parmform.pres_marker.value!='') {
            document.parmform.action+='#'+document.parmform.pres_marker.value;
            var typedef=new Array();
            typedef=document.parmform.pres_type.value.split('_');
           if (document.parmform.pres_type.value!='') {
            if (typedef[0]=='date') {
                eval('document.parmform.recent_'+
                     document.parmform.pres_type.value+
		     '.value=document.parmform.pres_value.value;');
            } else {
                eval('document.parmform.recent_'+typedef[0]+
		     '.value=document.parmform.pres_value.value;');
            }
	   }
            document.parmform.submit();
        } else {
            document.parmform.pres_value.value='';
            document.parmform.pres_marker.value='';
        }
    }

    function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
        var options = "width=" + w + ",height=" + h + ",";
        options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
        options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
        var newWin = window.open(url, wdwName, options);
        newWin.focus();
    }
</script>
</head>
$bodytag
<form method="post" action="/adm/parmset" name="envform">
<h3>Course Environment</h3>
<input type="submit" name="crsenv" value="Set Course Environment">
</form>
<form method="post" action="/adm/parmset" name="parmform">
<h3>Course Assessments</h3>
<b>
Section/Group:
<input type="text" value="$csec" size="6" name="csec">
<br>
For User 
<input type="text" value="$uname" size="12" name="uname">
or ID
<input type="text" value="$id" size="12" name="id"> 
at Domain 
<input type="text" value="$udom" size="6" name="udom">
</b>
<input type="hidden" value='' name="pres_value">
<input type="hidden" value='' name="pres_type">
<input type="hidden" value='' name="pres_marker">
ENDHEAD

}

sub print_row {
    my ($r,$which,$part,$name,$rid,$default,$defaulttype,$display,$defbgone,
	$defbgtwo,$parmlev)=@_;
# get the values for the parameter in cascading order
# empty levels will remain empty
    my ($result,@outpar)=&parmval($$part{$which}.'.'.$$name{$which},
				  $rid,$$default{$which});
# get the type for the parameters
# problem: these may not be set for all levels
    my ($typeresult,@typeoutpar)=&parmval($$part{$which}.'.'.
                                          $$name{$which}.'.type',
				  $rid,$$defaulttype{$which});
# cascade down manually
    my $cascadetype=$defaulttype;
    for (my $i=$#typeoutpar;$i>0;$i--) {
	 if ($typeoutpar[$i]) { 
            $cascadetype=$typeoutpar[$i];
	} else {
            $typeoutpar[$i]=$cascadetype;
        }
    }
 
    my $parm=$$display{$which};

    if ($parmlev eq 'full' || $parmlev eq 'brief') {
        $r->print('<td bgcolor='.$defbgtwo.' align="center">'
                  .$$part{$which}.'</td>');
    } else {    
        $parm=~s|\[.*\]\s||g;
    }

    $r->print('<td bgcolor='.$defbgone.'>'.$parm.'</td>');
   
    my $thismarker=$which;
    $thismarker=~s/^parameter\_//;
    my $mprefix=$rid.'&'.$thismarker.'&';

    if ($parmlev eq 'general') {

        if ($uname) {
            &print_td($r,3,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
        } elsif ($csec) {
            &print_td($r,6,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display); 
        } else {
            &print_td($r,9,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display); 
        }
    } elsif ($parmlev eq 'map') {

        if ($uname) {
            &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
        } elsif ($csec) {
            &print_td($r,5,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
        } else {
            &print_td($r,8,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
        }
    } else {

        &print_td($r,11,'#FFDDDD',$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);

        if ($parmlev eq 'brief') {

           &print_td($r,7,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);

           if ($csec) {
               &print_td($r,4,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           }
           if ($uname) {
               &print_td($r,1,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           }
        } else {

           &print_td($r,10,'#FFDDDD',$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           &print_td($r,9,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           &print_td($r,8,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           &print_td($r,7,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);

           if ($csec) {
               &print_td($r,6,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
               &print_td($r,5,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
               &print_td($r,4,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           }
           if ($uname) {
               &print_td($r,3,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
               &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
               &print_td($r,1,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
           }
        } # end of $brief if/else
    } # end of $parmlev if/else

    if ($parmlev eq 'full' || $parmlev eq 'brief') {
        $r->print('<td bgcolor=#CCCCFF align="center">'.
                  &valout($outpar[$result],$typeoutpar[$result]).'</td>');
    }
    my $sessionval=&Apache::lonnet::EXT('resource.'.$$part{$which}.
                                        '.'.$$name{$which},$symbp{$rid});
# this doesn't seem to work, and I don't think is correct
#    my $sessionvaltype=&Apache::lonnet::EXT('resource.'.$$part{$which}.
#                                      '.'.$$name{$which}.'.type',$symbp{$rid});
# this seems to work
    my $sessionvaltype=$typeoutpar[$result];
    $r->print('<td bgcolor=#999999 align="center"><font color=#FFFFFF>'.
                  &valout($sessionval,$sessionvaltype).'&nbsp;'.
                  '</font></td>');
    $r->print('</tr>');
    $r->print("\n");
}

sub print_td {
    my ($r,$which,$defbg,$result,$outpar,$mprefix,$value,$typeoutpar,$display)=@_;
    $r->print('<td bgcolor='.(($result==$which)?'"#AAFFAA"':$defbg).
              ' align="center">'.
              &plink($$typeoutpar[$which],$$display{$value},$$outpar[$which],
                     $mprefix."$which",'parmform.pres','psub').'</td>'."\n");
}

sub get_env_multiple {
    my ($name) = @_;
    my @values;
    if (defined($ENV{$name})) {
        # exists is it an array
        if (ref($ENV{$name})) {
            @values=@{ $ENV{$name} };
        } else {
            $values[0]=$ENV{$name};
        }
    }
    return(@values);
}

=pod

=item B<extractResourceInformation>: Given the course data hash, extractResourceInformation extracts lots of information about the course's resources into a variety of hashes.

Input: See list below:

=over 4

=item B<ids>: An array that will contain all of the ids in the course.

=item B<typep>: hash, id->type, where "type" contains the extension of the file, thus, I<problem exam quiz assess survey form>.

=item B<keyp>: hash, id->key list, will contain a comma seperated list of the meta-data keys available for the given id

=item B<allparms>: hash, name of parameter->display value (what is the display value?)

=item B<allparts>: hash, part identification->text representation of part, where the text representation is "[Part $part]"

=item B<allkeys>: hash, full key to part->display value (what's display value?)

=item B<allmaps>: hash, ???

=item B<fcat>: ???

=item B<defp>: hash, ???

=item B<mapp>: ??

=item B<symbp>: hash, id->full sym?

=back

=cut

sub extractResourceInformation {
    my $bighash = shift;
    my $ids = shift;
    my $typep = shift;
    my $keyp = shift;
    my $allparms = shift;
    my $allparts = shift;
    my $allkeys = shift;
    my $allmaps = shift;
    my $fcat = shift;
    my $defp = shift;
    my $mapp = shift;
    my $symbp = shift;

    foreach (keys %$bighash) {
	if ($_=~/^src\_(\d+)\.(\d+)$/) {
	    my $mapid=$1;
	    my $resid=$2;
	    my $id=$mapid.'.'.$resid;
	    my $srcf=$$bighash{$_};
	    if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
		$$ids[$#$ids+1]=$id;
		$$typep{$id}=$1;
		$$keyp{$id}='';
		foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'allpossiblekeys'))) {
		  if ($_=~/^parameter\_(.*)/) {
                    my $key=$_;
                    my $allkey=$1;
                    $allkey=~s/\_/\./g;
                    my $display= &Apache::lonnet::metadata($srcf,$key.'.display');
                    my $name=&Apache::lonnet::metadata($srcf,$key.'.name');
                    my $part= &Apache::lonnet::metadata($srcf,$key.'.part');
                    my $parmdis = $display;
                    $parmdis =~ s|(\[Part.*$)||g;
                    my $partkey = $part;
                    $partkey =~ tr|_|.|;
                    $$allparms{$name} = $parmdis;
                    $$allparts{$part} = "[Part $part]";
                    $$allkeys{$allkey}=$display;
                    if ($allkey eq $fcat) {
		        $$defp{$id}= &Apache::lonnet::metadata($srcf,$key);
		    }
		    if ($$keyp{$id}) {
		        $$keyp{$id}.=','.$key;
		    } else {
		        $$keyp{$id}=$key;
		    }
		  }
		}
		$$mapp{$id}=
		    &Apache::lonnet::declutter($$bighash{'map_id_'.$mapid});
                $$mapp{$mapid}=$$mapp{$id};
		$$allmaps{$mapid}=$$mapp{$id};
		$$symbp{$id}=$$mapp{$id}.
			'___'.$resid.'___'.
			    &Apache::lonnet::declutter($srcf);
                $$symbp{$mapid}=$$mapp{$id}.'___(all)';
	    }
	}
    }
}

##################################################
##################################################

=pod

=item assessparms

Show assessment data and parameters.  This is a large routine that should
be simplified and shortened... someday.

Inputs: $r

Returns: nothing

Variables used (guessed by Jeremy):

=over 4

=item B<pscat>: ParameterS CATegories? ends up a list of the types of parameters that exist, e.g., tol, weight, acc, opendate, duedate, answerdate, sig, maxtries, type.

=item B<psprt>: ParameterS PaRTs? a list of the parts of a problem that we are displaying? Used to display only selected parts?

=item B<allmaps>:

=back

=cut

##################################################
##################################################
sub assessparms {

    my $r=shift;
# -------------------------------------------------------- Variable declaration
    my %allkeys;
    my %allmaps;
    my %alllevs;

    $alllevs{'Resource Level'}='full';
#    $alllevs{'Resource Level [BRIEF]'}='brief';
    $alllevs{'Map Level'}='map';
    $alllevs{'Course Level'}='general';

    my %allparms;
    my %allparts;

    my %defp;
    %courseopt=();
    %useropt=();
    my %bighash=();

    @ids=();
    %symbp=();
    %typep=();

    my $message='';

    $csec=$ENV{'form.csec'};
    $udom=$ENV{'form.udom'};
    unless ($udom) { $udom=$r->dir_config('lonDefDomain'); }

    my @pscat=&get_env_multiple('form.pscat');
    my $pschp=$ENV{'form.pschp'};
    my @psprt=&get_env_multiple('form.psprt');
    my $showoptions=$ENV{'form.showoptions'};

    my $pssymb='';
    my $parmlev='';
    my $prevvisit=$ENV{'form.prevvisit'};

#    unless ($parmlev==$ENV{'form.parmlev'}) {
#        $parmlev = 'full';
#    }
 
    unless ($ENV{'form.parmlev'}) {
        $parmlev = 'map';
    } else {
        $parmlev = $ENV{'form.parmlev'};
    }

# ----------------------------------------------- Was this started from grades?

    if (($ENV{'form.command'} eq 'set') && ($ENV{'form.url'})
	&& (!$ENV{'form.dis'})) {
	my $url=$ENV{'form.url'};
	$url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
	$pssymb=&Apache::lonnet::symbread($url);
	@pscat='all';
	$pschp='';
        $parmlev = 'full';
    } elsif ($ENV{'form.symb'}) {
	$pssymb=$ENV{'form.symb'};
	@pscat='all';
	$pschp='';
        $parmlev = 'full';
    } else {
	$ENV{'form.url'}='';
    }

    my $id=$ENV{'form.id'};
    if (($id) && ($udom)) {
	$uname=(&Apache::lonnet::idget($udom,$id))[1];
	if ($uname) {
	    $id='';
	} else {
	    $message=
		"<font color=red>Unknown ID '$id' at domain '$udom'</font>";
	}
    } else {
	$uname=$ENV{'form.uname'};
    }
    unless ($udom) { $uname=''; }
    $uhome='';
    if ($uname) {
	$uhome=&Apache::lonnet::homeserver($uname,$udom);
        if ($uhome eq 'no_host') {
	    $message=
		"<font color=red>Unknown user '$uname' at domain '$udom'</font>";
	    $uname='';
        } else {
	    $csec=&Apache::lonnet::usection($udom,$uname,
					    $ENV{'request.course.id'});
	    if ($csec eq '-1') {
		$message="<font color=red>".
		    "User '$uname' at domain '$udom' not ".
                    "in this course</font>";
		$uname='';
		$csec=$ENV{'form.csec'};
	    } else {
		my %name=&Apache::lonnet::userenvironment($udom,$uname,
		      ('firstname','middlename','lastname','generation','id'));
		$message="\n<p>\nFull Name: ".
		    $name{'firstname'}.' '.$name{'middlename'}.' '
			.$name{'lastname'}.' '.$name{'generation'}.
			    "<br>\nID: ".$name{'id'}.'<p>';
	    }
        }
    }

    unless ($csec) { $csec=''; }

    my $fcat=$ENV{'form.fcat'};
    unless ($fcat) { $fcat=''; }

# ------------------------------------------------------------------- Tie hashs
    if (!(tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
	      &GDBM_READER(),0640))) {
	$r->print("Unable to access course data. (File $ENV{'request.course.fn'}.db not tieable)");
	return ;
    }
    if (!(tie(%parmhash,'GDBM_File',
	      $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER(),0640))) {
	$r->print("Unable to access parameter data. (File $ENV{'request.course.fn'}_parms.db not tieable)");
	return ;
    }

# --------------------------------------------------------- Get all assessments
    extractResourceInformation(\%bighash, \@ids, \%typep,\%keyp, \%allparms, \%allparts, \%allkeys, \%allmaps, $fcat, \%defp, \%mapp, \%symbp);

    $mapp{'0.0'} = '';
    $symbp{'0.0'} = '';
# ---------------------------------------------------------- Anything to store?
    if ($ENV{'form.pres_marker'}) {
	my ($sresid,$spnam,$snum)=split(/\&/,$ENV{'form.pres_marker'});
	$spnam=~s/\_([^\_]+)$/\.$1/;
# ---------------------------------------------------------- Construct prefixes

	my $symbparm=$symbp{$sresid}.'.'.$spnam;
	my $mapparm=$mapp{$sresid}.'___(all).'.$spnam;
	
	my $seclevel=$ENV{'request.course.id'}.'.['.$csec.'].'.$spnam;
	my $seclevelr=$ENV{'request.course.id'}.'.['.$csec.'].'.$symbparm;
	my $seclevelm=$ENV{'request.course.id'}.'.['.$csec.'].'.$mapparm;
	
	my $courselevel=$ENV{'request.course.id'}.'.'.$spnam;
	my $courselevelr=$ENV{'request.course.id'}.'.'.$symbparm;
	my $courselevelm=$ENV{'request.course.id'}.'.'.$mapparm;
	
	my $storeunder='';
	if (($snum==9) || ($snum==3)) { $storeunder=$courselevel; }
	if (($snum==8) || ($snum==2)) { $storeunder=$courselevelm; }
	if (($snum==7) || ($snum==1)) { $storeunder=$courselevelr; }
	if ($snum==6) { $storeunder=$seclevel; }
	if ($snum==5) { $storeunder=$seclevelm; }
	if ($snum==4) { $storeunder=$seclevelr; }
	
        my %storecontent = ($storeunder         => $ENV{'form.pres_value'},
                            $storeunder.'.type' => $ENV{'form.pres_type'});
	my $reply='';
	if ($snum>3) {
# ---------------------------------------------------------------- Store Course
#
# Expire sheets
	    &Apache::lonnet::expirespread('','','studentcalc');
	    if (($snum==7) || ($snum==4)) {
		&Apache::lonnet::expirespread('','','assesscalc',$symbp{$sresid});
	    } elsif (($snum==8) || ($snum==5)) {
		&Apache::lonnet::expirespread('','','assesscalc',$mapp{$sresid});
	    } else {
		&Apache::lonnet::expirespread('','','assesscalc');
	    }
# Store parameter
            $reply=&Apache::lonnet::cput
                ('resourcedata',\%storecontent,
                 $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
                 $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
	} else {
# ------------------------------------------------------------------ Store User
#
# Expire sheets
	    &Apache::lonnet::expirespread($uname,$udom,'studentcalc');
	    if ($snum==1) {
		&Apache::lonnet::expirespread
		    ($uname,$udom,'assesscalc',$symbp{$sresid});
	    } elsif ($snum==2) {
		&Apache::lonnet::expirespread
		    ($uname,$udom,'assesscalc',$mapp{$sresid});
	    } else {
		&Apache::lonnet::expirespread($uname,$udom,'assesscalc');
	    }
# Store parameter
	    $reply=&Apache::lonnet::cput
                ('resourcedata',\%storecontent,$udom,$uname);
	}

	if ($reply=~/^error\:(.*)/) {
	    $message.="<font color=red>Write Error: $1</font>";
	}
# ---------------------------------------------------------------- Done storing
    }
# --------------------------------------------- Devalidate cache for this child
        &Apache::lonnet::devalidatecourseresdata(
                 $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
                 $ENV{'course.'.$ENV{'request.course.id'}.'.domain'});
# -------------------------------------------------------------- Get coursedata
    %courseopt = &Apache::lonnet::dump
        ('resourcedata',
         $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
         $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
# --------------------------------------------------- Get userdata (if present)
    if ($uname) {
        %useropt=&Apache::lonnet::dump('resourcedata',$udom,$uname);
    }

# ------------------------------------------------------------------- Sort this

    @ids=sort  {
	if ($fcat eq '') {
	    $a<=>$b;
	} else {
	    my ($result,@outpar)=&parmval($fcat,$a,$defp{$a});
	    my $aparm=$outpar[$result];
	    ($result,@outpar)=&parmval($fcat,$b,$defp{$b});
	    my $bparm=$outpar[$result];
	    1*$aparm<=>1*$bparm;
	}
    } @ids;
#----------------------------------------------- if all selected, fill in array
    if ($pscat[0] eq "all" || !@pscat) {@pscat = (keys %allparms);}
    if ($psprt[0] eq "all" || !@psprt) {@psprt = (keys %allparts);}
# ------------------------------------------------------------------ Start page

    &startpage($r,$id,$udom,$csec,$uname);
#    if ($ENV{'form.url'}) {
#	$r->print('<input type="hidden" value="'.$ENV{'form.url'}.
#		  '" name="url"><input type="hidden" name="command" value="set">');
#    }
    $r->print('<input type="hidden" value="true" name="prevvisit">');

    foreach ('tolerance','date_default','date_start','date_end',
	     'date_interval','int','float','string') {
	$r->print('<input type="hidden" value="'.
		  $ENV{'form.recent_'.$_}.'" name="recent_'.$_.'">');
    }

    $r->print('<h2>'.$message.'</h2><table>');
                        
    $r->print('<tr><td><hr /></td></tr>');

    my $submitmessage;
    if (($prevvisit) || ($pschp) || ($pssymb)) {
        $submitmessage = "Update Display";
    } else {
        $submitmessage = "Display";
    }
    if (!$pssymb) {
        $r->print('<tr><td>Select Parameter Level</td><td>');
        $r->print('<select name="parmlev">');
        foreach (reverse sort keys %alllevs) {
            $r->print('<option value="'.$alllevs{$_}.'"');
            if ($parmlev eq $alllevs{$_}) {
               $r->print(' selected'); 
            }
            $r->print('>'.$_.'</option>');
        }
        $r->print("</select></td>\n");
    
        $r->print('<td><input type="submit" name="dis" value="'.$submitmessage.'"></td>');

        $r->print('</tr><tr><td><hr /></td>');

        $r->print('<tr><td>Select Enclosing Map</td>');
        $r->print('<td colspan="2"><select name="pschp">');
        $r->print('<option value="all">All Maps</option>');
        foreach (sort {$allmaps{$a} cmp $allmaps{$b}} keys %allmaps) {
            $r->print('<option value="'.$_.'"');
            if (($pschp eq $_)) { $r->print(' selected'); }
            $r->print('>/res/'.$allmaps{$_}.'</option>');
        }
        $r->print("</select></td></tr>\n");
    } else {
        my ($map,$id,$resource)=split(/___/,$pssymb);
        $r->print("<tr><td>Specific Resource</td><td>$resource</td>");
        $r->print('<td><input type="submit" name="dis" value="'.$submitmessage.'"></td>');
        $r->print('</tr>');
        $r->print('<input type="hidden" value="'.$pssymb.'" name="symb">');
    }

    $r->print('<tr><td colspan="3"><hr /><input type="checkbox"');
    if ($showoptions eq 'show') {$r->print(" checked ");}
    $r->print(' name="showoptions" value="show" onclick="form.submit();">Show More Options<hr /></td></tr>');
#    $r->print("<tr><td>Show: $showoptions</td></tr>");
#    $r->print("<tr><td>pscat: @pscat</td></tr>");
#    $r->print("<tr><td>psprt: @psprt</td></tr>");
#    $r->print("<tr><td>fcat:  $fcat</td></tr>");

    if ($showoptions eq 'show') {
        my $tempkey;

        $r->print('<tr><td colspan="3" align="center">Select Parameters to View</td></tr>');

        $r->print('<tr><td colspan="2"><table>');
        $r->print('<tr><td><input type="checkbox" name="pscat" value="all"');
        $r->print(' checked') unless (@pscat);
        $r->print('>All Parameters</td>');

        my $cnt=0;

        foreach $tempkey (sort { $allparms{$a} cmp $allparms{$b} }
                      keys %allparms ) {
            ++$cnt;
            $r->print('</tr><tr>') unless ($cnt%2);
            $r->print('<td><input type="checkbox" name="pscat" ');
            $r->print('value="'.$tempkey.'"');
            if ($pscat[0] eq "all" || grep $_ eq $tempkey, @pscat) {
                $r->print(' checked');
            }
            $r->print('>'.$allparms{$tempkey}.'</td>');
        }
        $r->print('</tr></table>');

#        $r->print('<tr><td>Select Parts</td><td>');
        $r->print('<td><select multiple name="psprt" size="5">');
        $r->print('<option value="all"');
        $r->print(' selected') unless (@psprt);
        $r->print('>All Parts</option>');
        foreach $tempkey (sort keys %allparts) {
            unless ($tempkey =~ /\./) {
                $r->print('<option value="'.$tempkey.'"');
                if ($psprt[0] eq "all" ||  grep $_ == $tempkey, @psprt) {
                    $r->print(' selected');
                }
                $r->print('>'.$allparts{$tempkey}.'</option>');
            }
        }
        $r->print('</select></td></tr><tr><td colspan="3"><hr /></td></tr>');

        $r->print('<tr><td>Sort list by</td><td>');
        $r->print('<select name="fcat">');
        $r->print('<option value="">Enclosing Map</option>');
        foreach (sort keys %allkeys) {
            $r->print('<option value="'.$_.'"');
            if ($fcat eq $_) { $r->print(' selected'); }
            $r->print('>'.$allkeys{$_}.'</option>');
        }
        $r->print('</select></td>');

        $r->print('</tr><tr><td colspan="3"><hr /></td></tr>');

    } else { # hide options - include any necessary extras here

        $r->print('<input type="hidden" name="fcat" value="'.$fcat.'">'."\n");

        unless (@pscat) {
          foreach (keys %allparms ) {
            $r->print('<input type="hidden" name="pscat" value="'.$_.'">'."\n");
          }
        } else {
          foreach (@pscat) {
            $r->print('<input type="hidden" name="pscat" value="'.$_.'">'."\n");
          }
        }

        unless (@psprt) {
          foreach (keys %allparts ) {
            $r->print('<input type="hidden" name="psprt" value="'.$_.'">'."\n");
          }
        } else {
          foreach (@psprt) {
            $r->print('<input type="hidden" name="psprt" value="'.$_.'">'."\n");
          }
        }

    }
    $r->print('</table>');

    my @temp_psprt;
    foreach my $t (@psprt) {
	push(@temp_psprt, grep {eval (/^$t\./ || ($_ == $t))} (keys %allparts));
    }

    @psprt = @temp_psprt;

    my @temp_pscat;
    map {
        my $cat = $_;
        push(@temp_pscat, map { $_.'.'.$cat } @psprt);
    } @pscat;

    @pscat = @temp_pscat;

    if (($prevvisit) || ($pschp) || ($pssymb)) {
# ----------------------------------------------------------------- Start Table
        my @catmarker=map { tr|.|_|; 'parameter_'.$_; } @pscat;
        my $csuname=$ENV{'user.name'};
        my $csudom=$ENV{'user.domain'};


        if ($parmlev eq 'full' || $parmlev eq 'brief') {

           my $coursespan=$csec?8:5;
           $r->print('<p><table border=2>');
           $r->print('<tr><td colspan=5></td>');
           $r->print('<th colspan='.($coursespan).'>Any User</th>');
           if ($uname) {
               $r->print("<th colspan=3 rowspan=2>");
               $r->print("User $uname at Domain $udom</th>");
           }
           $r->print(<<ENDTABLETWO);
<th rowspan=3>Parameter in Effect</th>
<th rowspan=3>Current Session Value<br>($csuname at $csudom)</th>
</tr><tr><td colspan=5></td><th colspan=2>Resource Level</th>
<th colspan=3>in Course</th>
ENDTABLETWO
           if ($csec) {
                $r->print("<th colspan=3>in Section/Group $csec</th>");
           }
           $r->print(<<ENDTABLEHEADFOUR);
</tr><tr><th>Assessment URL and Title</th><th>Type</th>
<th>Enclosing Map</th><th>Part No.</th><th>Parameter Name</th>
<th>default</th><th>from Enclosing Map</th>
<th>general</th><th>for Enclosing Map</th><th>for Resource</th>
ENDTABLEHEADFOUR

           if ($csec) {
               $r->print('<th>general</th><th>for Enclosing Map</th><th>for Resource</th>');
           }

           if ($uname) {
               $r->print('<th>general</th><th>for Enclosing Map</th><th>for Resource</th>');
           }

           $r->print('</tr>');

           my $defbgone='';
           my $defbgtwo='';

           foreach (@ids) {

                my $rid=$_;
                my ($inmapid)=($rid=~/\.(\d+)$/);

                if (($pschp eq 'all') || ($allmaps{$pschp} eq $mapp{$rid}) ||
                    ($pssymb eq $symbp{$rid})) {
# ------------------------------------------------------ Entry for one resource
                    if ($defbgone eq '"E0E099"') {
                        $defbgone='"E0E0DD"';
                    } else {
                        $defbgone='"E0E099"';
                    }
                    if ($defbgtwo eq '"FFFF99"') {
                        $defbgtwo='"FFFFDD"';
                    } else {
                        $defbgtwo='"FFFF99"';
                    }
                    my $thistitle='';
                    my %name=   ();
                    undef %name;
                    my %part=   ();
                    my %display=();
                    my %type=   ();
                    my %default=();
                    my $uri=&Apache::lonnet::declutter($bighash{'src_'.$rid});

                    foreach (split(/\,/,$keyp{$rid})) {
                        my $tempkeyp = $_;
                        if (grep $_ eq $tempkeyp, @catmarker) {
                          $part{$_}=&Apache::lonnet::metadata($uri,$_.'.part');
                          $name{$_}=&Apache::lonnet::metadata($uri,$_.'.name');
                          $display{$_}=&Apache::lonnet::metadata($uri,$_.'.display');
                          unless ($display{$_}) { $display{$_}=''; }
                          $display{$_}.=' ('.$name{$_}.')';
                          $default{$_}=&Apache::lonnet::metadata($uri,$_);
                          $type{$_}=&Apache::lonnet::metadata($uri,$_.'.type');
                          $thistitle=&Apache::lonnet::metadata($uri,$_.'.title');
                        }
                    }
                    my $totalparms=scalar keys %name;
                    if ($totalparms>0) {
                        my $firstrow=1;

                        $r->print('<tr><td bgcolor='.$defbgone.
                             ' rowspan='.$totalparms.
                             '><tt><font size=-1>'.
                             join(' / ',split(/\//,$uri)).
                             '</font></tt><p><b>'.
                             "<a href=\"javascript:openWindow('/res/".$uri.
                             "', 'metadatafile', '450', '500', 'no', 'yes')\";".
                             " TARGET=_self>$bighash{'title_'.$rid}");

                        if ($thistitle) {
                            $r->print(' ('.$thistitle.')');
                        }
                        $r->print('</a></b></td>');
                        $r->print('<td bgcolor='.$defbgtwo.
                                      ' rowspan='.$totalparms.'>'.$typep{$rid}.
                                      '</td>');

                        $r->print('<td bgcolor='.$defbgone.
                                      ' rowspan='.$totalparms.
                                      '><tt><font size=-1>');

                        $r->print(' / res / ');
                        $r->print(join(' / ', split(/\//,$mapp{$rid})));

                        $r->print('</font></tt></td>');

                        foreach (sort keys %name) {
                            unless ($firstrow) {
                                $r->print('<tr>');
                            } else {
                                undef $firstrow;
                            }

                            &print_row($r,$_,\%part,\%name,$rid,\%default,
                                       \%type,\%display,$defbgone,$defbgtwo,
                                       $parmlev);
                        }
                    }
                }
            } # end foreach ids
# -------------------------------------------------- End entry for one resource
            $r->print('</table>');
        } # end of  brief/full
#--------------------------------------------------- Entry for parm level map
        if ($parmlev eq 'map') {
            my $defbgone = '"E0E099"';
            my $defbgtwo = '"FFFF99"';

            my %maplist;

            if ($pschp eq 'all') {
                %maplist = %allmaps; 
            } else {
                %maplist = ($pschp => $mapp{$pschp});
            }

#-------------------------------------------- for each map, gather information
            my $mapid;
	    foreach $mapid (sort {$maplist{$a} cmp $maplist{$b}} keys %maplist) {
                my $maptitle = $maplist{$mapid};

#-----------------------  loop through ids and get all parameter types for map
#-----------------------------------------          and associated information
                my %name = ();
                my %part = ();
                my %display = ();
                my %type = ();
                my %default = ();
                my $map = 0;

#		$r->print("Catmarker: @catmarker<br />\n");
               
                foreach (@ids) {
                  ($map)=(/([\d]*?)\./);
                  my $rid = $_;
        
#                  $r->print("$mapid:$map:   $rid <br /> \n");

                  if ($map eq $mapid) {
                    my $uri=&Apache::lonnet::declutter($bighash{'src_'.$rid});
#                    $r->print("Keys: $keyp{$rid} <br />\n");

#--------------------------------------------------------------------
# @catmarker contains list of all possible parameters including part #s
# $fullkeyp contains the full part/id # for the extraction of proper parameters
# $tempkeyp contains part 0 only (no ids - ie, subparts)
# When storing information, store as part 0
# When requesting information, request from full part
#-------------------------------------------------------------------
                    foreach (split(/\,/,$keyp{$rid})) {
                      my $tempkeyp = $_;
                      my $fullkeyp = $tempkeyp;
                      $tempkeyp =~ s/_[\d_]+_/_0_/;
                      
                      if ((grep $_ eq $fullkeyp, @catmarker) &&(!$name{$tempkeyp})) {
                        $part{$tempkeyp}="0";
                        $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name');
                        $display{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.display');
                        unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
                        $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
                        $display{$tempkeyp} =~ s/_[\d_]+_/_0_/;
                        $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp);
                        $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type');
                      }
                    } # end loop through keys
                  }
                } # end loop through ids
                                 
#---------------------------------------------------- print header information
                $r->print(<<ENDMAPONE);
<center><h4>
<font color="red">Set Defaults for All Resources in map
<i>$maptitle</i><br />
Specifically for
ENDMAPONE
                if ($uname) {
                    my %name=&Apache::lonnet::userenvironment($udom,$uname,
                      ('firstname','middlename','lastname','generation', 'id'));
                    my $person=$name{'firstname'}.' '.$name{'middlename'}.' '
                           .$name{'lastname'}.' '.$name{'generation'};
                    $r->print("User <i>$uname \($person\) </i> in \n");
                } else {
                    $r->print("<i>all</i> users in \n");
                }
            
                if ($csec) {$r->print("Section <i>$csec</i> of \n")};

                $r->print("<i>$coursename</i><br />");
                $r->print("</font></h4>\n");
#---------------------------------------------------------------- print table
                $r->print('<p><table border="2">');
                $r->print('<tr><th>Parameter Name</th>');
                $r->print('<th>Default Value</th>');
                $r->print('<th>Parameter in Effect</th></tr>');

	        foreach (sort keys %name) {
                    &print_row($r,$_,\%part,\%name,$mapid,\%default,
                           \%type,\%display,$defbgone,$defbgtwo,
                           $parmlev);
#                    $r->print("<tr><td>resource.$part{$_}.$name{$_},$symbp{$mapid}</td></tr>\n");
                }
                $r->print("</table></center>");
            } # end each map
        } # end of $parmlev eq map
#--------------------------------- Entry for parm level general (Course level)
        if ($parmlev eq 'general') {
            my $defbgone = '"E0E099"';
            my $defbgtwo = '"FFFF99"';

#-------------------------------------------- for each map, gather information
            my $mapid="0.0";
#-----------------------  loop through ids and get all parameter types for map
#-----------------------------------------          and associated information
            my %name = ();
            my %part = ();
            my %display = ();
            my %type = ();
            my %default = ();
               
            foreach (@ids) {
                my $rid = $_;
        
                my $uri=&Apache::lonnet::declutter($bighash{'src_'.$rid});

#--------------------------------------------------------------------
# @catmarker contains list of all possible parameters including part #s
# $fullkeyp contains the full part/id # for the extraction of proper parameters
# $tempkeyp contains part 0 only (no ids - ie, subparts)
# When storing information, store as part 0
# When requesting information, request from full part
#-------------------------------------------------------------------
                foreach (split(/\,/,$keyp{$rid})) {
                  my $tempkeyp = $_;
                  my $fullkeyp = $tempkeyp;
                  $tempkeyp =~ s/_[\d_]+_/_0_/;
                  if ((grep $_ eq $fullkeyp, @catmarker) &&(!$name{$tempkeyp})) {
                    $part{$tempkeyp}="0";
                    $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name');
                    $display{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.display');
                    unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
                    $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
                    $display{$tempkeyp} =~ s/_[\d_]+_/_0_/;
                    $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp);
                    $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type');
                  }
                } # end loop through keys
            } # end loop through ids
                                 
#---------------------------------------------------- print header information
            $r->print(<<ENDMAPONE);
<center><h4>
<font color="red">Set Defaults for All Resources in Course
<i>$coursename</i><br />
ENDMAPONE
            if ($uname) {
                my %name=&Apache::lonnet::userenvironment($udom,$uname,
                  ('firstname','middlename','lastname','generation', 'id'));
                my $person=$name{'firstname'}.' '.$name{'middlename'}.' '
                       .$name{'lastname'}.' '.$name{'generation'};
                $r->print(" User <i>$uname \($person\) </i> \n");
            } else {
                $r->print("<i>ALL</i> USERS \n");
            }
            
            if ($csec) {$r->print("Section <i>$csec</i>\n")};
            $r->print("</font></h4>\n");
#---------------------------------------------------------------- print table
            $r->print('<p><table border="2">');
            $r->print('<tr><th>Parameter Name</th>');
            $r->print('<th>Default Value</th>');
            $r->print('<th>Parameter in Effect</th></tr>');

	    foreach (sort keys %name) {
                &print_row($r,$_,\%part,\%name,$mapid,\%default,
                       \%type,\%display,$defbgone,$defbgtwo,$parmlev);
#                    $r->print("<tr><td>resource.$part{$_}.$name{$_},$symbp{$mapid}</td></tr>\n");
            }
            $r->print("</table></center>");
        } # end of $parmlev eq general
    }
    $r->print('</form></body></html>');
    untie(%bighash);
    untie(%parmhash);
} # end sub assessparms


##################################################
##################################################

=pod

=item crsenv

Show course data and parameters.  This is a large routine that should
be simplified and shortened... someday.

Inputs: $r

Returns: nothing

=cut

##################################################
##################################################
sub crsenv {
    my $r=shift;
    my $setoutput='';
    my $bodytag=&Apache::loncommon::bodytag(
                             'Set Course Environment Parameters');
    my $dom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
    my $crs = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
# -------------------------------------------------- Go through list of changes
    foreach (keys %ENV) {
	if ($_=~/^form\.(.+)\_setparmval$/) {
            my $name=$1;
            my $value=$ENV{'form.'.$name.'_value'};
            if ($name eq 'newp') {
                $name=$ENV{'form.newp_name'};
            }
            if ($name eq 'url') {
		$value=~s/^\/res\///;
                my $bkuptime=time;
                my @tmp = &Apache::lonnet::get
                    ('environment',['url'],$dom,$crs);
                $setoutput.='Backing up previous URL: '.
                    &Apache::lonnet::put
                        ('environment',
                         {'top level map backup '.$bkuptime => $tmp[1] },
                         $dom,$crs).
                    '<br>';
            }
            if ($name) {
                $setoutput.='Setting <tt>'.$name.'</tt> to <tt>'.
                    $value.'</tt>: '.
                    &Apache::lonnet::put
                            ('environment',{$name=>$value},$dom,$crs).
                    '<br>';
	    }
        }
    }
# -------------------------------------------------------- Get parameters again

    my %values=&Apache::lonnet::dump('environment',$dom,$crs);
    my $output='';
    if (! exists($values{'con_lost'})) {
        my %descriptions=
	    ('url'            => '<b>Top Level Map</b> '.
                                 '<a href="javascript:openbrowser'.
                                 "('envform','url','sequence')\">".
                                 'Browse</a><br><font color=red> '.
                                 'Modification may make assessment data '.
                                 'inaccessible</font>',
             'description'    => '<b>Course Description</b>',
             'courseid'       => '<b>Course ID or number</b><br>'.
                                 '(internal, optional)',
             'default_xml_style' => '<b>Default XML Style File</b> '.
                    '<a href="javascript:openbrowser'.
                    "('envform','default_xml_style'".
                    ",'sty')\">Browse</a><br>",
             'question.email' => '<b>Feedback Addresses for Content '.
                                 'Questions</b><br>(<tt>user:domain,'.
                                 'user:domain,...</tt>)',
             'comment.email'  => '<b>Feedback Addresses for Comments</b><br>'.
                                 '(<tt>user:domain,user:domain,...</tt>)',
             'policy.email'   => '<b>Feedback Addresses for Course Policy</b>'.
                                 '<br>(<tt>user:domain,user:domain,...</tt>)',
             'hideemptyrows'  => '<b>Hide Empty Rows in Spreadsheets</b><br>'.
                                 '("<tt>yes</tt>" for default hiding)',
             'pageseparators'  => '<b>Visibly Separate Items on Pages</b><br>'.
                                 '("<tt>yes</tt>" for visible separation)',
             'pch.roles.denied'=> '<b>Disallow Resource Discussion for '.
                                  'Roles</b><br>"<tt>st</tt>": '.
                                  'student, "<tt>ta</tt>": '.
                                  'TA, "<tt>in</tt>": '.
                                  'instructor;<br><tt>role,role,...</tt>) '.
	       Apache::loncommon::help_open_topic("Course_Disable_Discussion"),
             'pch.users.denied' => 
                          '<b>Disallow Resource Discussion for Users</b><br>'.
                                 '(<tt>user:domain,user:domain,...</tt>)',
             'spreadsheet_default_classcalc' 
                 => '<b>Default Course Spreadsheet</b> '.
                    '<a href="javascript:openbrowser'.
                    "('envform','spreadsheet_default_classcalc'".
                    ",'spreadsheet')\">Browse</a><br>",
             'spreadsheet_default_studentcalc' 
                 => '<b>Default Student Spreadsheet</b> '.
                    '<a href="javascript:openbrowser'.
                    "('envform','spreadsheet_default_calc'".
                    ",'spreadsheet')\">Browse</a><br>",
             'spreadsheet_default_assesscalc' 
                 => '<b>Default Assessment Spreadsheet</b> '.
                    '<a href="javascript:openbrowser'.
                    "('envform','spreadsheet_default_assesscalc'".
                    ",'spreadsheet')\">Browse</a><br>",
             );
	foreach (keys(%values)) {
	    unless ($descriptions{$_}) {
		$descriptions{$_}=$_;
	    }
	}
	foreach (sort keys %descriptions) {
            # onchange is javascript to automatically check the 'Set' button.
            my $onchange = 'onFocus="javascript:window.document.forms'.
                '[\'envform\'].elements[\''.$_.'_setparmval\']'.
                '.checked=true;"';
	    $output.='<tr><td>'.$descriptions{$_}.'</td>'.
                '<td><input name="'.$_.'_value" size=40 '.
                'value="'.$values{$_}.'" '.$onchange.' /></td>'.
                '<td><input type=checkbox name="'.$_.'_setparmval"></td>'.
                '</tr>'."\n";
	}
        my $onchange = 'onFocus="javascript:window.document.forms'.
            '[\'envform\'].elements[\'newp_setparmval\']'.
            '.checked=true;"';
	$output.='<tr><td><i>Create New Environment Variable</i><br />'.
	    '<input type="text" size=40 name="newp_name" '.
                $onchange.' /></td><td>'.
            '<input type="text" size=40 name="newp_value" '.
                $onchange.' /></td><td>'.
	    '<input type="checkbox" name="newp_setparmval" /></td></tr>';
    }
    $r->print(<<ENDENV);
<html>
<script type="text/javascript" language="Javascript" >
    var editbrowser;
    function openbrowser(formname,elementname,only,omit) {
        var url = '/res/?';
        if (editbrowser == null) {
            url += 'launch=1&';
        }
        url += 'catalogmode=interactive&';
        url += 'mode=parmset&';
        url += 'form=' + formname + '&';
        if (only != null) {
            url += 'only=' + only + '&';
        } 
        if (omit != null) {
            url += 'omit=' + omit + '&';
        }
        url += 'element=' + elementname + '';
        var title = 'Browser';
        var options = 'scrollbars=1,resizable=1,menubar=0';
        options += ',width=700,height=600';
        editbrowser = open(url,title,options,'1');
        editbrowser.focus();
    }
</script>
<head>
<title>LON-CAPA Course Environment</title>
</head>
$bodytag
<form method="post" action="/adm/parmset" name="envform">
$setoutput
<p>
<table border=2>
<tr><th>Parameter</th><th>Value</th><th>Set?</th></tr>
$output
</table>
<input type="submit" name="crsenv" value="Set Course Environment">
</form>
</body>
</html>    
ENDENV
}

##################################################
##################################################

=pod

=item handler

Main handler.  Calls &assessparms and &crsenv subroutines.

=cut

##################################################
##################################################
sub handler {
    my $r=shift;

    if ($r->header_only) {
	$r->content_type('text/html');
	$r->send_http_header;
	return OK;
    }
    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
# ----------------------------------------------------- Needs to be in a course

    if (($ENV{'request.course.id'}) && 
	(&Apache::lonnet::allowed('opa',$ENV{'request.course.id'}))) {
 
        $coursename=$ENV{'course.'.$ENV{'request.course.id'}.'.description'};

	unless (($ENV{'form.crsenv'}) || (!$ENV{'request.course.fn'})) {
# --------------------------------------------------------- Bring up assessment
	    &assessparms($r);
# ---------------------------------------------- This is for course environment
	} else {
	    &crsenv($r);
	}
    } else {
# ----------------------------- Not in a course, or not allowed to modify parms
	$ENV{'user.error.msg'}=
	    "/adm/parmset:opa:0:0:Cannot modify assessment parameters";
	return HTTP_NOT_ACCEPTABLE;
    }
    return OK;
}

1;
__END__

=pod

=back

=cut




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