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    1: # The LearningOnline Network
    2: # Pick a CODE from the list of possible CODEs
    3: #
    4: # $Id: lonpickcode.pm,v 1.12 2007/01/25 20:34:29 albertel Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package Apache::lonpickcode;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common);
   33: use Apache::loncommon();
   34: use Apache::grades();
   35: use Apache::lonlocal;
   36: use Apache::lonnet;
   37: 
   38: sub get_code_freq {
   39:     my ($r)=@_;
   40:     my %codes;
   41:     my %scantron_config=
   42: 	&Apache::grades::get_scantron_config($env{'form.scantron_format'});
   43:     $r->rflush();
   44:     my ($scanlines,$scan_data)=&Apache::grades::scantron_getfile();
   45:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
   46: 	my $line=&Apache::grades::scantron_get_line($scanlines,$scan_data,$i);
   47: 	if ($line=~/^[\s\cz]*$/) { next; }
   48: 	my $scan_record=
   49: 	    &Apache::grades::scantron_parse_scanline($line,$i,
   50: 						     \%scantron_config,
   51: 						     $scan_data,1);
   52: 	push(@{$codes{$$scan_record{'scantron.CODE'}}},$$scan_record{'scantron.PaperID'});
   53: 
   54:     }
   55:     return %codes;
   56: }
   57: 
   58: sub handler {
   59:     my $r = shift;
   60:     &Apache::loncommon::content_type($r,'text/html');
   61:     $r->send_http_header;
   62:     return OK if $r->header_only;
   63: 
   64:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
   65: 					    ['curCODE','scantron_selectfile',
   66: 					     'form','scantron_format','symb',
   67: 					     'scantron_CODElist','command']);
   68: 
   69:     if  (!($env{'request.course.id'}) && 
   70: 	 (&Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
   71: 	$r->print(&Apache::loncommon::start_page().
   72: 		  &mt('Access not allowed.').
   73: 		  &Apache::loncommon::end_page());
   74:         return OK;
   75:     }
   76:     if      ($env{'form.command'} eq 'codelist') {
   77: 	&code_list($r);
   78:     } elsif ($env{'form.command'} eq 'showcodes') {
   79: 	&show_codes($r);
   80:     } else {
   81: 	&picking_a_code($r);
   82:     }
   83:     $r->print(&Apache::loncommon::end_page());
   84:     return OK;
   85: }
   86: 
   87: sub code_list {
   88:     my ($r,$secondview)=@_;
   89:     if (!$secondview) {
   90: 	$r->print(&Apache::loncommon::start_page("View CODEs",undef,
   91: 						 {'no_nav_bar' => 1}));
   92: 	$r->print("<p>".&mt('Select a set of saved CODEs to view.')."</p>");
   93:     } else {
   94: 	$r->print("<p>".&mt('Select another set of saved CODEs to view.')."</p>");
   95:     }
   96:     $r->print("<form method='POST' action='/adm/pickcode' name='pickcode'>");
   97:     $r->print(&Apache::grades::scantron_CODElist());
   98:     $r->print("<input type='hidden' name='command' value='showcodes' />");
   99:     $r->print("<input type='hidden' name='symb' value='".$env{'form.symb'}."' />");
  100:     $r->print("<input type='hidden' name='url' value='".$env{'form.url'}."' />");
  101:     $r->print("<input type='submit' name='submit' value='".&mt("View")."' />");
  102:     $r->print("</form>");
  103:     $r->print(&Apache::grades::show_grading_menu_form($env{'form.symb'},
  104: 						      $env{'form.url'}));
  105: }
  106: 
  107: sub show_codes {
  108:     my ($r)=@_;
  109:     $r->print(&Apache::loncommon::start_page("View CODEs",undef,
  110: 					     {'no_nav_bar' => 1}));
  111:     my %codes=&Apache::grades::get_codes();
  112:     $r->print("<h2>".$env{'form.scantron_CODElist'}."</h2>");
  113:     $r->print('<pre>');
  114:     foreach my $code (sort(keys(%codes))) {
  115: 	$r->print($code."\n");
  116:     }
  117:     $r->print('</pre>');
  118:     &code_list($r,1);
  119: }
  120: 
  121: sub picking_a_code {
  122:     my ($r)=@_;
  123:     $r->print(&Apache::loncommon::start_page("Selecting a CODE",undef,
  124: 					     {'no_nav_bar' => 1}));
  125:     $r->print(<<ENDSCRIPT);
  126: <script>
  127: function gochoose(newcode) {
  128:     opener.document.$env{'form.form'}.scantron_CODE_selectedvalue.value=newcode;
  129:     var slct=opener.document.$env{'form.form'}.scantron_CODE_resolution;
  130:     var i;
  131:     for (i=0;i<slct.length;i++) {
  132:         if (slct[i].value=='use_found') { slct[i].checked=true; }
  133:     }
  134:     self.close();
  135: }
  136: </script>
  137: ENDSCRIPT
  138: 
  139: 
  140:     $r->print("<p>The CODE on the paper is <tt><b>".$env{'form.curCODE'}.
  141: 	      "</b></tt>. Please Select a new one.</p>\n".'<form>');
  142:     my %codes=&Apache::grades::get_codes();
  143:     my %code_freq=&get_code_freq($r);
  144:     my $num_matches=length($env{'form.curCODE'});
  145:     for (my $i=$num_matches;$i>=0;$i--) {
  146: 	my $to_print="<p>".&mt("CODEs with [_1] matching letters",$i)."</p>";
  147: 	$to_print.='<table border="1"><tr><td></td><td>CODE</td><td>exams using this CODE</td>';
  148: 	my $print;
  149: 	foreach my $code (sort(keys(%codes))) {
  150: 	    if (&Apache::grades::num_matches($env{'form.curCODE'},$code) != $i) { next; }
  151: 	    $print=1;
  152: 	    my ($count,$list);
  153: 	    if (!ref($code_freq{$code})) {
  154: 		$count=0;
  155: 	    } else {
  156: 		$count=scalar(@{$code_freq{$code}});
  157: 		$list=' - '.join(', ',@{$code_freq{$code}});
  158: 	    }
  159: 	    $to_print.='<tr><td>'.
  160: 		      '<input type="button" value="'.&mt('Select').
  161: 		      '" onClick="gochoose(\''.$code.'\')" /></td>'.
  162: 		      '<td><tt>'.$code.'</tt></td><td>'.$count.
  163: 		      $list.'</td></tr>';
  164: 	    delete($codes{$code});
  165: 	}
  166: 	$to_print.='</table>';
  167: 	if ($print) { $r->print($to_print); }
  168:     }
  169:     $r->print('</form>');
  170: } 
  171: 
  172: 1;
  173: __END__