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File:  [LON-CAPA] / loncom / interface / lonpickcode.pm
Revision 1.2: download - view: text, annotated - select for diffs
Sat Apr 24 08:31:57 2004 UTC (20 years ago) by albertel
Branches: MAIN
CVS tags: HEAD
-pickcode seems to work correctly now
-radio buttons in the selecting a CODE phase work nicely

# The LearningOnline Network
# Pick a CODE from the list of possible CODEs
#
# $Id: lonpickcode.pm,v 1.2 2004/04/24 08:31:57 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/
#

package Apache::lonpickcode;

use strict;
use Apache::Constants qw(:common);
use Apache::loncommon();
use Apache::grades();
use Apache::lonlocal;

sub get_code_freq {
    my ($r)=@_;
    my %codes;
    my %scantron_config=
	&Apache::grades::get_scantron_config($ENV{'form.scantron_format'});
    $r->rflush();
    my ($scanlines,$scan_data)=&Apache::grades::scantron_getfile();
    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
	my $line=&Apache::grades::scantron_get_line($scanlines,$i);
	if ($line=~/^[\s\cz]*$/) { next; }
	my $scan_record=
	    &Apache::grades::scantron_parse_scanline($line,$i,
						     \%scantron_config,
						     $scan_data,1);
	$codes{$$scan_record{'scantron.CODE'}}++;

    }
    return %codes;
}

sub get_codes {
    my $old_name=$ENV{'form.scantron_CODElist'};
    my $cdom =$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
    my $cnum =$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
    my %result=&Apache::lonnet::get('CODEs',[$old_name],$cdom,$cnum);
    my %allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
    return %allcodes;
}

sub num_matches {
    my ($code) = @_;
    my $orig=$ENV{'form.curCODE'};
    my @code=split(//,$code);
    my @orig=split(//,$orig);
    my $same=0;
    for (my $i=0;$i<scalar(@code);$i++) {
	if ($code[$i] eq $orig[$i]) { $same++; }
    }
    return $same;
}

sub handler {
    my $r = shift;
    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    return OK if $r->header_only;

    $r->print(<<ENDDOCUMENT);
<html>
  <head>
    <title>The LearningOnline Network with CAPA</title>
  </head>
ENDDOCUMENT


    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
					    ['curCODE','scantron_selectfile',
					     'form','scantron_format',
					     'scantron_CODElist']);

    if  (!($ENV{'request.course.id'}) && 
	 (&Apache::lonnet::allowed('usc',$ENV{'request.course.id'}))) {
	$r->print('<body>Access not allowed.</body>');
        return OK;
    }

    $r->print(&Apache::loncommon::bodytag("Selecting a CODE"));
    $r->print(<<ENDSCRIPT);
<script>
function gochoose(newcode) {
    opener.document.$ENV{'form.form'}.scan_CODE_selectedvalue.value=newcode;
    var slct=opener.document.$ENV{'form.form'}.scan_CODE_resolution;
    var i;
    for (i=0;i<slct.length;i++) {
        if (slct[i].value=='use_found') { slct[i].checked=true; }
    }
    self.close();
}
</script>
ENDSCRIPT


    $r->print("<p>The CODE on the paper is <tt><b>".$ENV{'form.curCODE'}.
	      "</b></tt>. Please Select a new one.</p>\n".'<form>');
    my %codes=&get_codes();
    my %code_freq=&get_code_freq($r);
    my $num_matches=&num_matches($ENV{'form.curCODE'});
    for (my $i=$num_matches;$i>=0;$i--) {
	my $to_print="<p> CODEs with $i matches</p>";
	$to_print.='<table border="1"><tr><td></td><td>CODE</td><td># of exams using this CODE</td>';
	my $print;
	foreach my $code (sort(keys(%codes))) {
	    if (&num_matches($code) != $i) { next; }
	    $print=1;
	    my $count=$code_freq{$code};
	    if (!$count) { $count=0; }
	    $to_print.='<tr><td>'.
		      '<input type="button" value="'.&mt('Select').
		      '" onClick="gochoose(\''.$code.'\')" /></td>'.
		      '<td><tt>'.$code.'</tt></td><td> <tt>'.$count.
		      '</tt></td></tr>';
	    delete($codes{$code});
	}
	$to_print.='</table>';
	if ($print) { $r->print($to_print); }
    }
    $r->print('</form></body></html>');
    return OK;
} 

1;
__END__
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