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- recommiting matthew's changes backed out by Alex

    1: # The LearningOnline Network with CAPA 
    2: # implements the tags that control the hints
    3: #
    4: # $Id: hint.pm,v 1.26 2002/02/20 22:20:23 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::hinttags; 
   30: 
   31: use strict;
   32: use Apache::lonnet;
   33: use capa;
   34: 
   35: BEGIN {
   36:   &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint'));
   37: }
   38: 
   39: 
   40: @Apache::hint::which=();
   41: sub start_hintgroup {
   42:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   43:   my $skiptoend='0';
   44:   my $result;
   45: 
   46:   if ($target eq 'web') {
   47:     my $id=$Apache::inputtags::part;
   48:     my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
   49:     if ( $numtries eq '') { $numtries = 0; }
   50:     my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
   51:     if ( $hinttries eq '') { $hinttries = 1; }
   52:     &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
   53:     if ( $numtries < $hinttries ) {
   54:       $skiptoend='1';
   55:     } else {
   56:       if ($target eq 'web') {$result='<table bgcolor="#dddddd"><tr><td>';}
   57:     }
   58:     if ($skiptoend) {
   59:       &Apache::lonxml::get_all_text("/hintgroup",$$parser[$#$parser]);
   60:     }
   61:   } elsif ($target eq 'tex') {
   62:     $result .= '\noindent{\it Hint: }'; 
   63:   }
   64:   @Apache::hint::which=();
   65:   return $result;
   66: }
   67: 
   68: sub end_hintgroup {
   69:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   70:   my $result;
   71: 
   72:   if ($target eq 'web') {
   73:     my $id=$Apache::inputtags::part;
   74:     my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
   75:     if ( $numtries eq '') { $numtries = 0; }
   76:     my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
   77:     if ( $hinttries eq '') { $hinttries = 1; }
   78:     &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
   79:     if ( $numtries >= $hinttries ) {
   80:       $result='</td></tr></table>';
   81:     }
   82:   } elsif ($target eq 'edit') {
   83:     $result.=&Apache::edit::end_table();
   84:   }
   85:   @Apache::hint::which=();
   86:   return $result;
   87: }
   88: 
   89: sub start_numericalhint {
   90:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   91:   #do everything in end, so intervening <responseparams> work
   92:   &Apache::response::start_hintresponse($parstack,$safeeval);
   93:   my $result;
   94:   if ($target eq 'edit') {
   95:     $result.=&Apache::edit::tag_start($target,$token);
   96:     $result.=&Apache::edit::text_arg('Name:','name',$token);
   97:     $result.=&Apache::edit::text_arg('Answer:','answer',$token);
   98:     $result.=&Apache::edit::text_arg('Unit:','unit',$token,5);
   99:     $result.=&Apache::edit::text_arg('Format:','format',$token,4);
  100:     $result.=&Apache::edit::end_row();
  101:     $result.=&Apache::edit::start_spanning_row();
  102:   } elsif ($target eq 'modified') {
  103:     my $constructtag=
  104:       &Apache::edit::get_new_args($token,$parstack,$safeeval,
  105: 				  'name','answer','unit', 'format');
  106:     if ($constructtag) {
  107:       $result  = &Apache::edit::rebuild_tag($token);
  108:       $result .= &Apache::edit::handle_insert();
  109:     }
  110:   }
  111:   return $result;
  112: }
  113: 
  114: sub end_numericalhint {
  115:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  116:   my $result;
  117:   if ($target eq 'web') {
  118:     $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
  119:     my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  120:     &Apache::response::setup_params('numericalhint');
  121:     my $partid=$Apache::inputtags::part;
  122:     my $id=$Apache::inputtags::response['-1'];
  123:     #id submissions occured under
  124:     my $submitid=$Apache::inputtags::response['-2'];
  125:     my $response = $Apache::lonhomework::history{
  126: 			    "resource.$partid.$submitid.submission"};
  127:     &Apache::lonxml::debug("hintgroup is using $response<br />\n");
  128:     #build safe space expression
  129:     my $expression="&caparesponse_check_list('".$response."','".
  130:       $$parstack[$#$parstack];
  131:     #need to get all possible parms
  132:     foreach my $key (keys(%Apache::inputtags::params)) {
  133:       $expression.= ';my $'. #'
  134: 	$key.'="'.$Apache::inputtags::params{$key}.'"';
  135:     }
  136:     $expression.="');";
  137:     $result = &Apache::run::run($expression,$safeeval);
  138:     &Apache::lonxml::debug("$expression:result:$result:$Apache::lonxml::curdepth");
  139:     my ($awards) = split /:/ , $result;
  140:     my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
  141:     if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { push (@Apache::hint::which,$name); }
  142:     $result='';
  143:   } elsif ($target eq 'meta') {
  144:     $result=&Apache::response::meta_package_write('numericalhint');
  145:   } elsif ($target eq 'edit') {
  146:     $result.='</td></tr>'.&Apache::edit::end_table;
  147:   }
  148:   &Apache::response::end_hintresponse();
  149:   return $result;
  150: }
  151: 
  152: # a part shows if it is on, if no specific parts are on, then default shows
  153: sub start_hintpart {
  154:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  155: 
  156:   my $show ='0';
  157:   my $result = '';
  158:   if ($target eq 'web') {
  159:     my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
  160:     &Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
  161:     if ( $on eq 'default' && $#Apache::hint::which == '-1') {
  162:       $show=1;
  163:     } else {
  164:       my $which;
  165:       foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
  166:     }
  167:     if (!$show) {
  168:       &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);
  169:     }
  170:   } elsif ($target eq 'grade') {
  171:     &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);
  172:   } elsif ($target eq 'edit') {
  173:     $result.= &Apache::edit::tag_start($target,$token);
  174:     $result.= &Apache::edit::text_arg('On:','on',$token);
  175:     $result.= &Apache::edit::end_row();
  176:     $result.= &Apache::edit::start_spanning_row();
  177:   } elsif ($target eq 'modified') {
  178:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
  179: 						 'on');
  180:     if ($constructtag) {
  181:       $result = &Apache::edit::rebuild_tag($token);
  182:       $result.=&Apache::edit::handle_insert();
  183:     }
  184:   }
  185:   return $result;
  186: }
  187: 
  188: sub end_hintpart {
  189:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  190:   my $result;
  191:   if ($target eq 'edit') { $result.=&Apache::edit::end_table; }
  192:   return $result;
  193: }
  194: 
  195: 1;
  196: __END__