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Diff for /loncom/homework/hint.pm between versions 1.14 and 1.79

version 1.14, 2001/08/06 17:12:29 version 1.79, 2024/09/29 01:58:43
Line 1 Line 1
 # The LON-CAPA hint handler.  # The LearningOnline Network with CAPA 
   # implements the tags that control the hints
 #  #
 # Handles the displaying of hints.  # $Id$
 #  #
 # YEAR=2000  # Copyright Michigan State University Board of Trustees
 # 12/19,12/21 Guy Albertelli  #
 # YEAR=2001  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 # 1/4,1/5,1/22,2/7,2/19,3/31,4/5,4/10,5/31,6/2 Guy Albertelli  #
 # 8/6 Scott Harrison  # LON-CAPA me&aree 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::hinttags;   package Apache::hinttags; 
   
 use strict;  use strict;
 use Apache::lonnet;  use Apache::lonnet();
 use capa;  use capa;
   use Apache::caparesponse();
   use Apache::lonmaxima();
   use Apache::lonr();
   use Apache::chemresponse();
   use Apache::response();
   use Apache::lonlocal;
   use Storable qw(dclone);
   
 # ======================================================================= BEGIN  BEGIN {
 sub BEGIN {      &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint','stringhint','formulahint','optionhint','radiobuttonhint','mathhint','customhint','reactionhint','organichint'));
   &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart',  
  'numericalhint'));  
 }  }
   
 @Apache::hint::which = ();  
   
 # ============================================================ Start hint group  @Apache::hint::which=();
 sub start_hintgroup {  sub start_hintgroup {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $skiptoend = '0';      my $skiptoend='0';
     my $result;      my $result;
   
     if ($target eq 'web') {      if ($target eq 'web') {
  my $id = $Apache::inputtags::part;   my $id=$Apache::inputtags::part;
  my $numtries = $Apache::lonhomework::history{"resource.$id.tries"};   my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
  if ( $numtries eq '') { $numtries = 0; }   if ( $numtries eq '') { $numtries = 0; }
  my $hinttries = &Apache::lonnet::EXT("resource.$id.hinttries");   my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
  if ( $hinttries eq '') { $hinttries = 1; }  
  &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");   &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
  if ( $numtries < $hinttries ) {   my $gradestatus=
     $skiptoend = '1';      $Apache::lonhomework::history{"resource.$id.solved"};
  } else {   my $showoncorrect=lc(&Apache::lonxml::get_param('showoncorrect',$parstack,$safeeval));
     if ($target eq 'web') {   &Apache::lonxml::debug("onc orrect $showoncorrect, $gradestatus");
  $result = '<table bgcolor="#dddddd"><tr><td>';   if ( ($showoncorrect ne 'yes' && &Apache::response::show_answer()) ||
     }       ( $numtries < $hinttries) ) {
       &Apache::lonxml::debug("Grabbin all");
       &Apache::lonxml::get_all_text("/hintgroup",$parser,$style);
  }   }
    &Apache::lonxml::startredirection;
       } elsif ($target eq 'tex') {
    $result .= '\keephidden{';
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::select_arg('Show hint even if problem Correct:','showoncorrect',['no','yes'],$token);
    $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'showoncorrect');
          if ($constructtag) {
              $result =&Apache::edit::rebuild_tag($token);
          }
     }      }
     if ($skiptoend) {      @Apache::hint::which=();
  &Apache::lonxml::get_all_text("/hintgroup",$$parser[$#$parser]);      if (($#Apache::functionplotresponse::failedrules>=0) && ($target eq 'web')) {
           @Apache::hint::which=@Apache::functionplotresponse::failedrules;
           undef @Apache::functionplotresponse::failedrules;
     }      }
     @Apache::hint::which = ();  
     return $result;      return $result;
 }  }
   
 # ============================================================== End hint group  
 sub end_hintgroup {  sub end_hintgroup {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;      my $result;
   
     if ($target eq 'web') {      if ($target eq 'web') {
  my $id = $Apache::inputtags::part;   my $id=$Apache::inputtags::part;
  my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};   my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
  if ( $numtries eq '') { $numtries = 0; }   if ( $numtries eq '') { $numtries = 0; }
  my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");   my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
  if ( $hinttries eq '') { $hinttries = 1; }  
  &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");   &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
  if ( $numtries => $hinttries ) {   my $hinttext=&Apache::lonxml::endredirection;
     if ($target eq 'web') {$result = '</td></tr></table>';}   if ($Apache::lonhomework::type ne 'exam' &&
  }      $numtries >= $hinttries && $hinttext =~/\S/) {
       $result='<table bgcolor="#dddddd"><tr><td>'.
    $hinttext.'</td></tr></table>';
    }
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       } elsif ($target eq 'tex') {
    $result .= '}';
     }      }
     @Apache::hint::which = '';      @Apache::hint::which=();
     return $result;      return $result;
 }  }
   
 # ======================================================== Start numerical hint  
 sub start_numericalhint {  sub start_numericalhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     #do everything in end, so intervening <responseparams> work      #do everything in end, so intervening <responseparams> work
     return '';      &Apache::response::start_hintresponse($parstack,$safeeval);
       &Apache::caparesponse::push_answer();
       my $result;
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token);
    if ($token->[1] eq 'numericalhint') {
       $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
    &Apache::loncommon::help_open_topic('Physical_Units');
       $result.=&Apache::edit::text_arg('Format:','format',$token,4).
    &Apache::loncommon::help_open_topic('Numerical_Response_Format');
    } elsif ($token->[1] eq 'formulahint') {
       $result.=&Apache::edit::text_arg('Sample Points:','samples',
        $token,40).
           &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
    }
           $result.=&Apache::edit::text_arg('Pre-Processor Subroutine:','preprocess',
                                                $token,10);
    $result.=&Apache::edit::end_row();
    $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag;
    if ($token->[1] eq 'numericalhint') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name',
        'answer','unit','format','preprocess');
    } elsif ($token->[1] eq 'formulahint') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name','answer',
        'samples','preprocess');
    }
    if ($constructtag) {
       $result  = &Apache::edit::rebuild_tag($token);
    }
       } elsif ($target eq 'web') {
    &Apache::response::reset_params();
       }
       return $result;
 }  }
   
 # ========================================================== End numerical hint  
 sub end_numericalhint {  sub end_numericalhint {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;      my $result;
     if ($target eq 'web') {      if ($target eq 'web') {
    if (!$Apache::lonxml::default_homework_loaded) {
       &Apache::lonxml::default_homework_load($safeeval);
    }
  $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);   $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
  my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);   my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
  my $response = $Apache::lonhomework::history{'resource.'.   &Apache::response::setup_params('numericalhint',$safeeval);
        $Apache::inputtags::part.'.'.  
        $Apache::inputtags::response['-1'].'.submission'};   my $partid=$Apache::inputtags::part;
    my $id=$Apache::inputtags::hint[-1];
    #id submissions occurred under
    my $submitid=$Apache::inputtags::response[-1];
   
    my $response = $Apache::lonhomework::history{
       "resource.$partid.$submitid.submission"};
  &Apache::lonxml::debug("hintgroup is using $response<br />\n");   &Apache::lonxml::debug("hintgroup is using $response<br />\n");
  my $expression = "&caparesponse_check_list('".$response."','".  
                   $$parstack[$#$parstack].   my @args = ('type','tol','sig','ans_fmt','unit','calc','samples');
                  ';my $tol="'.$Apache::inputtags::params{'tol'}.'"'.   my $args_ref =
                  ';my $sig="'.$Apache::inputtags::params{'sig'}.'"'.      &Apache::caparesponse::setup_capa_args($safeeval,$parstack,
          "');";     \@args,$response);
  $result = &Apache::run::run($expression,$safeeval);  
  &Apache::lonxml::debug("$expression:result:$result:".   my $hideunit=&Apache::response::get_response_param($partid.'_'.$submitid,'turnoffunit');
        $Apache::lonxml::curdepth);   if (lc($hideunit) eq "yes") { delete($$args_ref{'unit'}); }
  my ($awards) = split /:/, $result;  
  my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);          my $stringify;
    if ($$tagstack[-1] eq 'formulahint') {
               if ($$args_ref{'samples'}) {
                   $$args_ref{'type'}='fml';
                   $stringify = 1;
               } else {
                   $$args_ref{'type'}='math';
               }
    } elsif ($$tagstack[-1] eq 'numericalhint') {
       $$args_ref{'type'}='float';
               $stringify = 1;
    }
    &Apache::caparesponse::add_in_tag_answer($parstack,$safeeval,$stringify);
    my %answer = &Apache::caparesponse::get_answer();
    my (@final_awards,@final_msgs,@ans_names);
    foreach my $ans_name (keys(%answer)) {
       &Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
   
       ${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=
    dclone($answer{$ans_name});
       &Apache::caparesponse::setup_capa_response($args_ref,$response);
       my ($result,@msgs) = 
    &Apache::run::run("&caparesponse_check_list()",$safeeval);
       &Apache::lonxml::debug("checking $ans_name $result with $response");
       &Apache::lonxml::debug('msgs are '.join(':',@msgs));
       my ($awards)=split(/:/,$result);
       my @awards= split(/,/,$awards);
       my ($ad, $msg) = 
    &Apache::inputtags::finalizeawards(\@awards,\@msgs);
       push(@final_awards,$ad);
       push(@final_msgs,$msg);
       push(@ans_names,$ans_name);
    }
    my ($ad, $msg, $ans_name) =
       &Apache::inputtags::finalizeawards(\@final_awards,
          \@final_msgs,
          \@ans_names,1);
  if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') {   if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') {
     push (@Apache::hint::which,$name); }      push(@Apache::hint::which,$hint_name);
  $result = '';   }
    $result='';
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       &Apache::caparesponse::pop_answer();
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   sub start_formulahint {
       return &start_numericalhint(@_);
   }
   
   sub end_formulahint {
       return &end_numericalhint(@_);
   }
   
   sub start_mathhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> and <answer> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       &Apache::lonxml::register('Apache::response',('answer'));
       my $result;
       if ($target eq 'edit') {
           $result.=&Apache::edit::tag_start($target,$token);
           $result.=&Apache::edit::text_arg('Name:','name',$token);
           $result.=&Apache::edit::select_arg('Algebra System:',
                                              'cas',
                                              ['maxima','R'],
                                              $token);
           $result.=&Apache::edit::text_arg('Argument Array:',
                                            'args',$token);
           $result.=&Apache::edit::end_row();
           $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
           my $constructtag;
           $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                     $safeeval,'name','cas',
                                                     'args');
           $result  = &Apache::edit::rebuild_tag($token);
       } elsif ($target eq 'web') {
           &Apache::response::reset_params();
       }
       return $result;
   }
   
   sub end_mathhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
           if (!$Apache::lonxml::default_homework_loaded) {
               &Apache::lonxml::default_homework_load($safeeval);
           }
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
           &Apache::response::setup_params('mathhint',$safeeval);
           my $partid=$Apache::inputtags::part;
           my $submitid=$Apache::inputtags::response[-1];
           my $response = $Apache::lonhomework::history{
                               "resource.$partid.$submitid.submission"};
   
    my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
    my $award;
    if ($cas eq 'maxima') {
       my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
       $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args);
    }
           if ($cas eq 'R') {
               my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
               $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args);
           }
           if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
               push (@Apache::hint::which,$name);
           }
           $result='';
       } elsif ($target eq 'meta') {
           $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
           $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       pop(@Apache::response::custom_answer);
       pop(@Apache::response::custom_answer_type);
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   sub start_customhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> and <answer> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       &Apache::lonxml::register('Apache::response',('answer'));
       my $result;
       if ($target eq 'edit') {
           $result.=&Apache::edit::tag_start($target,$token);
           $result.=&Apache::edit::text_arg('Name:','name',$token);
           $result.=&Apache::edit::end_row();
           $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
           my $constructtag;
           $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                     $safeeval,'name');
           $result  = &Apache::edit::rebuild_tag($token);
       } elsif ($target eq 'web') {
           &Apache::response::reset_params();
       }
       return $result;
   }
   
   sub end_customhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
           if (!$Apache::lonxml::default_homework_loaded) {
               &Apache::lonxml::default_homework_load($safeeval);
           }
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
           &Apache::response::setup_params('customhint',$safeeval);
           my $partid=$Apache::inputtags::part;
           my $submitid=$Apache::inputtags::response[-1];
           my $response = $Apache::lonhomework::history{
                               "resource.$partid.$submitid.submission"};
           my $award;
    if ( $response =~ /[^\s]/ && 
        $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
       if (!$Apache::lonxml::default_homework_loaded) {
    &Apache::lonxml::default_homework_load($safeeval);
       }
       ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
    $response;
       
       $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
    }
           if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
               push (@Apache::hint::which,$name);
           }
           $result='';
       } elsif ($target eq 'meta') {
           $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
           $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       pop(@Apache::response::custom_answer);
       pop(@Apache::response::custom_answer_type);
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   sub start_stringhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       my $result;
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token);
    $result.=&Apache::edit::select_arg('Type:','type',
    [['cs','Case Sensitive'],['ci','Case Insensitive'],
     ['mc','Case Insensitive, Any Order'],
     ['re','Regular Expression']],$token);
           $result.=&Apache::edit::text_arg('Pre-Processor Subroutine:','preprocess',
                                                $token,10);
    $result.=&Apache::edit::end_row();
    $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag;
    $constructtag=&Apache::edit::get_new_args($token,$parstack,
     $safeeval,'name','answer',
     'type','preprocess');
    $result  = &Apache::edit::rebuild_tag($token);
       } elsif ($target eq 'web') {
    &Apache::response::reset_params();
       }
       return $result;
   }
   
   sub end_stringhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
    if (!$Apache::lonxml::default_homework_loaded) {
       &Apache::lonxml::default_homework_load($safeeval);
    }
    $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
    my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
    &Apache::response::setup_params('stringhint',$safeeval);
    my $partid=$Apache::inputtags::part;
    my $id=$Apache::inputtags::hint[-1];
    #id submissions occurred under
    my $submitid=$Apache::inputtags::response[-1];
    my $response = $Apache::lonhomework::history{
       "resource.$partid.$submitid.submission"};
    &Apache::lonxml::debug("hintgroup is using $response<br />\n");
    my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
    my ($ad,$msg);
    if ($type eq 're' ) {
       my $answer=&Apache::lonxml::get_param('answer',$parstack,
     $safeeval);
       ${$safeeval->varglob('LONCAPA::response')}=$response;
       my $compare='=';
       if ($answer=~/^\s*NOT\s*/) {
    $answer=~s/^\s*NOT\s*//;
    $compare='!';
       }
       my $test='$LONCAPA::response'.$compare.'~m'.$answer;
       &Apache::lonxml::debug("test $test");
       $result = &Apache::run::run("return $test",$safeeval);
       &Apache::lonxml::debug("current $response");
       &Apache::lonxml::debug("current $answer");
       $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
    } else { 
       my @args = ('type');
       my $args_ref = 
    &Apache::caparesponse::setup_capa_args($safeeval,$parstack,
          \@args,$response);
               if ($$args_ref{'type'} eq '') {
                   $$args_ref{'type'} = 'ci';
               }
               my $stringify;
               if ($$args_ref{'type'} ne 're') {
                   $stringify = 1;
               }
       &Apache::caparesponse::add_in_tag_answer($parstack,$safeeval,$stringify);
       my (@final_awards,@final_msgs,@ans_names);
       my %answer = &Apache::caparesponse::get_answer();
       foreach my $ans_name (keys(%answer)) {
    &Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
    ${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$ans_name});
    my ($result, @msgs)=&Apache::run::run("&caparesponse_check_list()",$safeeval);
    &Apache::lonxml::debug('msgs are'.join(':',@msgs));
    my ($awards) = split(/:/,$result);
    my (@awards) = split(/,/,$awards);
    ($ad,$msg) = 
       &Apache::inputtags::finalizeawards(\@awards,\@msgs);
    push(@final_awards,$ad);
    push(@final_msgs,$msg);
    push(@ans_names,$ans_name);
    &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
       }
       my ($ad, $msg, $ans_name) = 
    &Apache::inputtags::finalizeawards(\@final_awards,
      \@final_msgs,
      \@ans_names,1);
    }
    if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { 
       push(@Apache::hint::which,$hint_name);
    }
    $result='';
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   # reactionhint
   
   sub start_reactionhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       my $result;
       if ($target eq 'edit') {
           $result.=&Apache::edit::tag_start($target,$token);
           $result.=&Apache::edit::text_arg('Name:','name',$token);
           $result.=&Apache::edit::text_arg('Answer:','answer',$token);
           $result.=&Apache::edit::end_row();
           $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
           my $constructtag;
           $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                     $safeeval,'name','answer',
                                                     );
           $result  = &Apache::edit::rebuild_tag($token);
       } elsif ($target eq 'web') {
           &Apache::response::reset_params();
       }
       return $result;
   }
   
   sub end_reactionhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
           if (!$Apache::lonxml::default_homework_loaded) {
               &Apache::lonxml::default_homework_load($safeeval);
           }
           my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
           &Apache::response::setup_params('reactionhint',$safeeval);
           my $partid=$Apache::inputtags::part;
           my $id=$Apache::inputtags::hint[-1];
           #id submissions occurred under
           my $submitid=$Apache::inputtags::response[-1];
           my $response = $Apache::lonhomework::history{
                               "resource.$partid.$submitid.submission"};
           &Apache::lonxml::debug("hintgroup is using $response<br />\n");
           my $answer=&Apache::lonxml::get_param('answer',$parstack,
                                                     $safeeval);
           &Apache::lonxml::debug("current $response");
           &Apache::lonxml::debug("current $answer");
           if (&Apache::chemresponse::chem_standard_order($response) eq 
               &Apache::chemresponse::chem_standard_order($answer)) {
               push(@Apache::hint::which,$hint_name);
           }
           $result='';
       } elsif ($target eq 'meta') {
           $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
           $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   # organichint
   
   sub start_organichint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       #do everything in end, so intervening <responseparams> work
       &Apache::response::start_hintresponse($parstack,$safeeval);
       my $result;
       if ($target eq 'edit') {
           $result.=&Apache::edit::tag_start($target,$token);
           $result.=&Apache::edit::text_arg('Name:','name',$token);
           $result.=&Apache::edit::text_arg('Answer:','answer',$token);
           $result.=&Apache::edit::end_row();
           $result.=&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
           my $constructtag;
           $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                     $safeeval,'name','answer',
                                                     );
           $result  = &Apache::edit::rebuild_tag($token);
       } elsif ($target eq 'web') {
           &Apache::response::reset_params();
       }
       return $result;
   }
   
   sub end_organichint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       if ($target eq 'web') {
           if (!$Apache::lonxml::default_homework_loaded) {
               &Apache::lonxml::default_homework_load($safeeval);
           }
           my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
           &Apache::response::setup_params('organichint',$safeeval);
           my $partid=$Apache::inputtags::part;
           my $id=$Apache::inputtags::hint[-1];
           #id submissions occurred under
           my $submitid=$Apache::inputtags::response[-1];
           my $response = $Apache::lonhomework::history{
                               "resource.$partid.$submitid.submission"};
           &Apache::lonxml::debug("hintgroup is using $response<br />\n");
           my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
           my %previous = &Apache::response::check_for_previous($response,$partid,$id);
           foreach my $answer (@answers) {
               &Apache::lonxml::debug("submitted a $response for $answer<br \>\n");
               if ($response eq $answer) {
                  push(@Apache::hint::which,$hint_name);
                  last;
               }
           }
           $result='';
       } elsif ($target eq 'meta') {
           $result=&Apache::response::meta_package_write($token->[1]);
       } elsif ($target eq 'edit') {
           $result.=&Apache::edit::end_row().&Apache::edit::end_table();
     }      }
       &Apache::response::end_hintresponse();
     return $result;      return $result;
 }  }
   
 # ======================================================= Starting part of hint  
 # a part shows if it is on, if no specific parts are on, then default shows  # a part shows if it is on, if no specific parts are on, then default shows
 sub start_hintpart {  sub start_hintpart {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
     my $show ='0';      my $show ='0';
       my $result = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);   my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
  &Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");   &Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
Line 114  sub start_hintpart { Line 616  sub start_hintpart {
     $show=1;      $show=1;
  } else {   } else {
     my $which;      my $which;
     foreach $which (@Apache::hint::which) {      foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
  if ($which eq $on) { $show = 1; last } }  
  }   }
  if (!$show) {   if (!$show) {
     &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);      &Apache::lonxml::get_all_text("/hintpart",$parser,$style);
  }   }
     } elsif ($target eq 'grade') {      } elsif ($target eq 'grade') {
  &Apache::lonxml::get_all_text("/hintpart",$$parser[$#$parser]);   &Apache::lonxml::get_all_text("/hintpart",$parser,$style);
       } elsif ($target eq 'edit') {
    $result.= &Apache::edit::tag_start($target,$token);
    $result.= &Apache::edit::text_arg('On:','on',$token);
    $result.= &Apache::edit::end_row();
    $result.= &Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'on');
    if ($constructtag) {
       $result = &Apache::edit::rebuild_tag($token);
    }
     }      }
     return '';      return $result;
 }  }
   
 # ========================================================= Ending part of hint  
 sub end_hintpart {  sub end_hintpart {
   return '';      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'edit') {
    $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       return $result;
 }  }
   
 1;  sub start_optionhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       &Apache::response::start_hintresponse($parstack,$safeeval);
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token,40);
    $result.=&Apache::edit::text_arg('Concept:','concept',$token,50);
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name',
        'answer','concept');
    if ($constructtag) {
       $result  = &Apache::edit::rebuild_tag($token);
    }
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write('numericalhint');
       }
       return $result;
   }
   
   sub end_optionhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'web') {
    my ($foilmatch,$conceptmatch)=(-1,-1);
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
    my $partid=$Apache::inputtags::part;
    #id submissions occurred under
    my $submitid=$Apache::inputtags::response[-1];
    my $part_id="$partid.$submitid";
    my %answer;
    my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
    if ($answer) {
       eval('%answer ='.$answer);
       &Apache::lonxml::debug("answwer hash");
       &Apache::lonhomework::showhash(%answer);
       my $response = $Apache::lonhomework::history{
               "resource.$part_id.submission"};
       my %response=&Apache::lonnet::str2hash($response);
       &Apache::lonhomework::showhash(%response);
       foreach my $foil (keys(%answer)) {
    $foilmatch=1;
    if ($answer{$foil} ne $response{$foil}) {$foilmatch=0;last;}
       }
    }
    my %concept;
    my $constr=&Apache::lonxml::get_param('concept',$parstack,$safeeval);
    if ( $constr ) { eval('%concept ='.$constr); }
    my $response = $Apache::lonhomework::history{
    "resource.$part_id.submissiongrading"};
    my %response=&Apache::lonnet::str2hash($response);
    foreach my $concept (keys(%concept)) {
       my $compare;
       if ($concept{$concept} eq 'correct') {$compare=1}else{$compare=0}
       $conceptmatch=1;
       if (ref($Apache::hint::option{"$part_id.concepts"})) {
    foreach my $foil (@{ $Apache::hint::option{"$part_id.concept.$concept"} }) {
       &Apache::lonxml::debug("compare -$foil- -$response{$foil}-$compare-");
       if ( exists($response{$foil}) && 
    $response{$foil} ne $compare) {$conceptmatch=0;last;}
    }
       } else {
    $conceptmatch=0;
       }
       if ($conceptmatch eq '0') { last; }
    }
    if ( ($conceptmatch eq '-1' || $conceptmatch eq '1') &&
        ($foilmatch    eq '-1' || $foilmatch    eq '1') ) {
       push(@Apache::hint::which,$name);
    }
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       &Apache::response::end_hintresponse();
       return $result;
   }
   
   sub start_radiobuttonhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       &Apache::response::start_hintresponse($parstack,$safeeval);
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::text_arg('Answer:','answer',$token);
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'name',
        'answer');
    if ($constructtag) {
       $result  = &Apache::edit::rebuild_tag($token);
    }
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write('numericalhint');
       }
       return $result;
   }
   
   sub end_radiobuttonhint {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'web') {
    my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
    my @answer;
    my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
    eval('@answer ='.$answer);
    my $partid=$Apache::inputtags::part;
    #id submissions occurred under
    my $submitid=$Apache::inputtags::response[-1];
    my $part_id="$partid.$submitid";
    my $response = $Apache::lonhomework::history{
       "resource.$part_id.submission"};
    ($response)=&Apache::lonnet::str2hash($response);
    &Apache::lonxml::debug("response is $response");
   
    if ($answer[0] eq 'foil') {
       shift(@answer);
       foreach my $answer (@answer) {
    if ($response eq $answer) {
       push (@Apache::hint::which,$name);
       last;
    }
       }
    } elsif ($answer[0] eq 'concept') {
       shift(@answer);
       foreach my $answer (@answer) {
    if (ref($Apache::hint::radiobutton{"$part_id.concept.".$answer})) {
       my @names=@{ $Apache::hint::radiobutton{"$part_id.concept.".$answer} };
       if (grep(/^\Q$response\E$/,@names)) {
    push(@Apache::hint::which,$name);
    last;
       }
    }
       }
    }
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::end_row().&Apache::edit::end_table();
       }
       &Apache::response::end_hintresponse();
       return $result;
   }
   1;
 __END__  __END__
   
   
   =head1 NAME
   
   Apache::hinttags
   
   =head1 SYNOPSIS
   
   This handler coordinates the delivery of hints to students working on LON-CAPA problems and assignments.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 SUBROUTINES
   
   =over
   
   =item start_hintgroup()
   
   =item end_hintgroup()
   
   =item start_numericalhint()
   
   =item end_numericalhint()
   
   =item start_formulahint()
   
   =item end_formulahint()
   
   =item start_mathhint()
   
   =item end_mathhint()
   
   =item start_customhint()
   
   =item end_customhint()
   
   =item start_stringhint()
   
   =item end_stringhint()
   
   =item start_hintpart()
   
   =item end_hintpart()
   
   =item start_optionhint()
   
   =item end_optionhint()
   
   =item start_radiobuttonhint()
   
   =item end_radiobuttonhint()
   
   =back
   
   =cut
Removed from v.1.14  
changed lines
  Added in v.1.79

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