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Annotation of loncom/homework/hint.pm, revision 1.4

1.1       albertel    1: package Apache::hinttags; 
                      2: 
                      3: use strict;
                      4: use Apache::lonnet;
                      5: 
                      6: sub BEGIN {
1.3       albertel    7:   &Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint'));
1.1       albertel    8: }
                      9: 
1.2       albertel   10: 
1.3       albertel   11: @Apache::hint::which=();
1.1       albertel   12: sub start_hintgroup {
1.2       albertel   13:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
1.3       albertel   14:   my $skiptoend='1';
                     15:   my $result;
                     16:   
                     17:   if ($target ne 'meta' || $target ne 'grade') {
                     18:     my $id=$Apache::inputtags::part;
                     19:     my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
                     20:     if ( $numtries eq '') { $numtries = 0; }
                     21:     my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
                     22:     if ( $hinttries eq '') { $hinttries = 1; }
                     23:     &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
1.4     ! albertel   24:     if ( $numtries >= $hinttries ) {
1.3       albertel   25:       $skiptoend='0'; 
                     26:       if ($target eq 'web') {$result='<table bgcolor="#dddddd"><tr><td>';}
                     27:     }	
                     28:   }
                     29:   if ($skiptoend) {
1.2       albertel   30:     &Apache::lonxml::get_all_text("/hintgroup",$$parser[$#$parser]);
                     31:   }
1.3       albertel   32:   @Apache::hint::which=();
                     33:   return $result;
1.1       albertel   34: }
                     35: 
                     36: sub end_hintgroup {
1.3       albertel   37:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
                     38:   my $result;
                     39: 
                     40:   if ($target ne 'meta' || $target ne 'grade') {
                     41:     my $id=$Apache::inputtags::part;
                     42:     my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
                     43:     if ( $numtries eq '') { $numtries = 0; }
                     44:     my $hinttries=&Apache::lonnet::EXT("resource.$id.hinttries");
                     45:     if ( $hinttries eq '') { $hinttries = 1; }
                     46:     &Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
1.4     ! albertel   47:     if ( $numtries >= $hinttries ) {
1.3       albertel   48:       if ($target eq 'web') {$result='</td></tr></table>';}
                     49:     }	
                     50:   }
                     51:   @Apache::hint::which='';
                     52:   return $result;
                     53: }
                     54: 
                     55: sub start_numericalhint {
                     56:   #do everything in end, so intervening <responseparams> work
                     57: }
                     58: 
                     59: sub end_numericalhint {
                     60:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
                     61:   my $result;
                     62:   if ($target ne 'meta' && $target ne 'grade') {
                     63:     my $args ='';
                     64:     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
                     65:     my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);
1.4     ! albertel   66:     my $response = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.$Apache::inputtags::response['-1'].submission"};
1.3       albertel   67:     &Apache::lonxml::debug("hintgroup is using $response<br>\n");
                     68:     my $expression="&caparesponse_check_list('".$response."','".
                     69:       $$parstack[$#$parstack].
                     70: 	';my $tol="'.$Apache::inputtags::params{'tol'}.'"'.
                     71: 	';my $sig="'.$Apache::inputtags::params{'sig'}.'"'.
                     72: 	  "');";
                     73:     $result = &Apache::run::run($expression,$safeeval);
                     74:     my ($awards) = split /:/ , $result;
                     75:     my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
                     76:     if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') { push (@Apache::hint::which,$name); }
                     77:     &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
                     78:     $result='';
                     79:   }
                     80:   return $result;
1.1       albertel   81: }
                     82: 
1.2       albertel   83: # a part shows if it is on, if no specific parts are on, then default shows
1.1       albertel   84: sub start_hintpart {
                     85:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
                     86: 
                     87:   my $show ='0';
1.4     ! albertel   88: 
1.1       albertel   89:   if ($target ne 'meta' && $target ne 'grade') {
                     90:     my $args ='';
                     91:     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
                     92:     my $on = &Apache::run::run("{$args;".'return $on}',$safeeval);
1.3       albertel   93:     if ( $on eq 'default' && $#Apache::hint::which == '-1') {
1.1       albertel   94:     } else {
1.3       albertel   95:       my $which;
1.4     ! albertel   96:       foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
1.1       albertel   97:     }
                     98:     if (!$show) {
                     99:       &Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
                    100:     }
                    101:   } else {
                    102:     &Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
                    103:   }
                    104:   return '';
                    105: }
                    106: 
                    107: sub end_hintpart {
                    108: }
                    109: 
                    110: 1;
                    111: __END__