--- loncom/homework/optionresponse.pm	2003/05/16 20:16:18	1.77
+++ loncom/homework/optionresponse.pm	2004/02/19 19:06:35	1.101
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: optionresponse.pm,v 1.77 2003/05/16 20:16:18 albertel Exp $
+# $Id: optionresponse.pm,v 1.101 2004/02/19 19:06:35 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -25,8 +25,6 @@
 #
 # http://www.lon-capa.org/
 #
-# 2/21 Guy
-# 01/18 Alex
 package Apache::optionresponse;
 use strict;
 use Apache::response;
@@ -45,7 +43,8 @@ sub start_optionresponse {
   %Apache::hint::option=();
   if ($target eq 'edit') {
     $result.=&Apache::edit::start_table($token).
-	"<tr><td>Multiple Option Response Question</td><td>Delete:".
+	"<tr><td>Multiple Option Response Question ".
+	&Apache::loncommon::help_open_topic('Option_Response_Problems')."</td><td>Delete:".
 	&Apache::edit::deletelist($target,$token)
 	."</td><td>&nbsp;".
         &Apache::edit::end_row().
@@ -63,7 +62,7 @@ sub start_optionresponse {
   } elsif ($target eq 'meta') {
     $result=&Apache::response::meta_package_write('optionresponse');
   } elsif ($target eq 'analyze') {
-    my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+    my $part_id="$Apache::inputtags::part.$id";
     push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
   }
   return $result;
@@ -151,10 +150,13 @@ sub end_foilgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
   my $result;
-  if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') {
+  if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
+      $target eq 'tex' || $target eq 'analyze') {
+    my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
     my $name;
     my @opt;
     eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
+    if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
     &Apache::lonxml::debug("Options are $#opt");
     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
     my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
@@ -164,17 +166,11 @@ sub end_foilgroup {
     } elsif ( $target eq 'answer') {
       $result.=&displayanswers($max,$randomize,@opt);
     } elsif ( $target eq 'analyze') {
-      my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
-      foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
-	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
-	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
-	$Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
-	  $Apache::response::foilgroup{"$name.value"};
-	$Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
-	  $Apache::response::foilgroup{"$name.text"};
-      }
-      push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
-      push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} },&whichfoils($max,$randomize));
+	my @shown = &whichfoils($max,$randomize);
+	&Apache::response::analyze_store_foilgroup(\@shown,
+						  ['text','value','location']);
+	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+	push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
     } elsif ( $target eq 'grade') {
       if ( defined $ENV{'form.submitted'}) {
 	my @whichopt = &whichfoils($max,$randomize);
@@ -189,8 +185,8 @@ sub end_foilgroup {
 	  if ($ENV{'form.submitted'} eq 'scantron') {
 	      $response = $opt[$response];
 	  }
-	  $responsehash{$name}=$response;
 	  if ( $response =~ /[^\s]/) {
+	    $responsehash{$name}=$response;
 	    my $value=$Apache::response::foilgroup{$name.'.value'};
 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
 	    if ($value eq $response) {
@@ -291,28 +287,23 @@ sub displayfoils {
   my @names = @{ $Apache::response::foilgroup{'names'} };
   my @truelist;
   my @falselist;
-  my $result;
+  my $result;  
   my $name;
-  my $displayoptionintex=0;
+  my $displayoptionintex=1;
   my @alphabet = ('A'..'Z');
   my @whichopt = &whichfoils($max,$randomize);
   my $part=$Apache::inputtags::part;
   my $id=$Apache::inputtags::response[-1];
   my $break;
   my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
-  my $status=$Apache::inputtags::status[-1];
-  if (
-      ($target ne 'tex') &&
-      (($solved =~ /^correct/) || ($status eq 'SHOW_ANSWER')) ) {
+  if ( ($target ne 'tex') &&
+       &Apache::response::show_answer() ) {
+    my $temp=1;
     foreach $name (@whichopt) {
 	my $text=$Apache::response::foilgroup{$name.'.text'};
-	if ($text!~/^\s*$/) {
-	    if ($target eq 'tex') {
-		$break='\vskip 0 mm ';
-	    } elsif ($target eq 'web') {
-		$break='<br />';
-	    }
-	}
+	my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
+	my $lastopt=$lastresponse{$name};
+	if ($text!~/^\s*$/) { $break='<br />'; }
 	$result.=$break;
 	if ($target eq 'web') {
 	    my $value=$Apache::response::foilgroup{$name.'.value'};
@@ -322,24 +313,20 @@ sub displayfoils {
 		} else {
 		    $text=$value.': '.$text;
 		}
+	    } else {
+		$text='&#149;'.$text;
 	    }
 	    $result.=$text."\n";
-      } elsif ($target eq 'tex') {
-	  $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
- 	  $result .='\item \textit{'.$Apache::response::foilgroup{$name.'.value'}.'}'.
-	      ":".$Apache::response::foilgroup{$name.'.text'}."\n";
       }
       if ($Apache::lonhomework::type eq 'exam') {
-	if ($target ne 'tex') {
-	  $result.=&webbubbles(\@opt,\@alphabet);
-        } else {
-	  $result.=&bubbles(\@alphabet,\@opt);
-        }
+	  $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
       }
+      $temp++;
     }
   } else {
     my $temp=1;
     my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
+    my $internal_counter=$Apache::lonxml::counter;
     foreach $name (@whichopt) {
       my $text=$Apache::response::foilgroup{$name.'.text'};
       if ($text!~/^\s*$/) {
@@ -361,62 +348,55 @@ sub displayfoils {
       }
       if ($target ne 'tex') {
 	  if ($Apache::lonhomework::type ne 'exam') {
-	    $optionlist='<select name="HWVAL_'.
-	      $Apache::inputtags::response['-1'].':'.$temp.'">'.
+	      $optionlist='<select name="HWVAL_'.
+		  $Apache::inputtags::response['-1'].':'.$temp.'">'.
 		  $optionlist."</select>\n";
+	  } else {
+	      $optionlist='<u>'.('&nbsp;'x10).'</u>';
 	  }
-	  my $text=$Apache::response::foilgroup{$name.'.text'};
-	  if (!($text=~s|<drawoptionlist\s*/>|$optionlist|) && $Apache::lonhomework::type ne 'exam') {
-	      $text=$optionlist.$text;
+	  if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
+	      if ($Apache::lonhomework::type ne 'exam') {
+		  $text='&#149;'.$text;
+	      }
+	  } else {
+	      if ($Apache::lonhomework::type ne 'exam') {
+		  $text=$optionlist.$text;
+	      }
 	  }
 	  $result.=$break.$text."\n";
 	  if ($Apache::lonhomework::type eq 'exam') {
-	    $result.=&webbubbles(\@opt,\@alphabet,$temp);
+	      $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
 	  }
 	  $temp++;
       } else {
-          my $texoptionlist = &optionlist_correction($optionlist);
-	  if ($displayoptionintex == 0) {
-	      if ($Apache::lonhomework::type eq 'exam') {$texoptionlist='';} #if exam we do not need to show optionlist
-	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
-		if ($Apache::lonhomework::type eq 'exam') {
-	          $Apache::response::foilgroup{$name.'.text'}=~s/\\item/\\vskip 2 mm/;
-	        }
-	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
-	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
-	        }
-		$result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
-	      } else {
-		  if ($Apache::lonhomework::type eq 'exam') {
-		      $result.= $texoptionlist.'  '.$Apache::response::foilgroup{$name.'.text'};
-		  } else {
-		      $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
-		  }
-	      }
+	  my $texoptionlist='';
+	  if ($displayoptionintex &&
+	      $Apache::lonhomework::type ne 'exam') {
+	      $texoptionlist = &optionlist_correction(@opt);
+	  }
+	  if ($text=~/<drawoptionlist\s*\/>/) {
+	      $text=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
+	  }
+
+	  if ($text=~m/\\item /) {
 	      if ($Apache::lonhomework::type eq 'exam') {
-		  $result.='\vskip -2 mm\parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$Apache::lonxml::counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
+	          $text=~s/\\item/\\vskip 2 mm/;
 	      }
-	      $displayoptionintex=1;
+	      $result.= $texoptionlist.$text;
 	  } else {
-	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
-		  if ($Apache::lonhomework::type eq 'exam') {
-		      $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
-		  }
-	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
-	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
-	        }
-		$result.= $Apache::response::foilgroup{$name.'.text'};
-	      } else {
-		  if ($Apache::lonhomework::type eq 'exam') {
-		      $result.= '  '.$Apache::response::foilgroup{$name.'.text'};
-		  } else {
-		      $result.= '\item '.$Apache::response::foilgroup{$name.'.text'};
-		  }
-	      }
 	      if ($Apache::lonhomework::type eq 'exam') {
-		  $result.='\vskip -2 mm \parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$Apache::lonxml::counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
+		  $result.= $texoptionlist.'  '.$text;
+	      } else {
+		  $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;
 	      }
 	  }
+	  if ($Apache::lonhomework::type eq 'exam') {
+	      $result.='\vskip -1 mm\noindent\begin{enumerate}\item[\textbf{'.
+		  $internal_counter.'}.]'.&bubbles(\@alphabet,\@opt).
+		  '\end{enumerate} \vskip -8 mm \strut ';
+	      $internal_counter++;
+	  }
+	  $displayoptionintex=0;
       }
     }
   }
@@ -429,54 +409,71 @@ sub displayfoils {
 
 
 sub optionlist_correction {
-
-    my $texoptionlist = shift;
-    $texoptionlist =~ s/<option><\/option>/\\item \[\] Possible answers are:/;
-    $texoptionlist =~ s/<option>/\{\\bf /g;
-    $texoptionlist =~ s/<option selected="on">/\{\\bf /g;
-    $texoptionlist =~ s/<\/option>/\},/g;
-    $texoptionlist =~ s/,$/\./g;
-    $texoptionlist =~ s/>/\$>\$/g;
-    $texoptionlist =~ s/</\$<\$/g;
-    $texoptionlist =~ s/=/\$=\$/g;
-    $texoptionlist =~ s/\^(\d+)/<m>\$$1\$<\/m>/g;
+    my @options = @_;
+    my $texoptionlist='\\item [] Choices: ';
+    if (scalar(@options) > 0) {
+	foreach my $option (@options) {
+	    $texoptionlist.='{\bf '.
+		&Apache::lonxml::latex_special_symbols($option).
+		'},';
+	}
+	chop($texoptionlist);
+	$texoptionlist.='.';
+    } else {
+	$texoptionlist='\\item [] \\vskip -5 mm';
+    }
     return $texoptionlist;
 }
 
 
 sub webbubbles {
-
-    my ($ropt,$ralphabet,$temp)=@_;
+    my ($ropt,$ralphabet,$temp,$lastopt)=@_;
     my @opt=@$ropt; 
     my @alphabet=@$ralphabet;
     my $result='';
-	my $number_of_bubbles = $#opt + 1;
-	$result.= '<table border="1"><tr>';
-	for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
-	   $result.='<td><input type="radio" name="HWVAL_'.$Apache::inputtags::response['-1'].':'.$temp.
-                    '" value='.$opt[$ind].'>'.$alphabet[$ind].': '.$opt[$ind].'</td>';
+    my $number_of_bubbles = $#opt + 1;
+    $result.= '<table border="1"><tr>';
+    for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
+	my $checked='';
+	if ($lastopt eq $opt[$ind]) {
+	    $checked=' checked="on" ';
 	}
-	$result.='</tr></table>';
-	return $result;
+	$result.='<td><input type="radio" name="HWVAL_'.
+	    $Apache::inputtags::response['-1'].':'.$temp.
+	    '" value="'.$opt[$ind].'" '.$checked.' />'.$alphabet[$ind].': '.
+	    $opt[$ind].'</td>';
+    }
+    $result.='</tr></table>';
+    return $result;
 }
 
 
 sub bubbles {
-
     my ($ralphabit,$ropt) = @_;
     my @alphabet = @$ralphabit;
     my @opt = @$ropt;
     my ($result,$head,$line) =('','','');
     my $number_of_bubbles = $#opt + 1;
     my $current_length = 0;
+    my $textwidth;
+    if ($ENV{'form.textwidth'} ne '') {
+	$ENV{'form.textwidth'}=~/(\d+)/;
+	$textwidth=$1;
+    } else {
+	$ENV{'textwidth'}=~/(\d+)/;
+	$textwidth=$1;
+    }
     for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
-	$current_length += (length($opt[$ind])+length($alphabet[$ind])+2)*2;
-	if ($current_length<0.9*$ENV{'form.textwidth'} and $ind!=$number_of_bubbles) {
+	my $leftmargin;
+	$opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
+	if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
+	$current_length += (length($opt[$ind])+length($alphabet[$ind])+3)*2;
+	if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
 	    $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
 	    $head.='lr';
 	} else {
 	    $line=~s/\&\s*$//;
-	    $result.='\vskip -5 mm\begin{tabular}{'.$head.'}\\\\'.$line.'\\\\\end{tabular}';
+	    $result.='\vskip -2 mm\noindent\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}';
 	    $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
 	    $head ='lr';
 	    $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
@@ -508,47 +505,13 @@ sub end_conceptgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   $Apache::optionresponse::conceptgroup=0;
   my $result='';
-  if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
-      || $target eq 'tex' || $target eq 'analyze') {
+  if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
+      $target eq 'tex' || $target eq 'analyze') {
     #if not there aren't any foils to display and thus no question
-    if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
-      my @names = @{ $Apache::response::conceptgroup{'names'} };
-      my $pick=int(&Math::Random::random_uniform() * ($#names+1));
-      my $name=$names[$pick];
-      push @{ $Apache::response::foilgroup{'names'} }, $name;
-      $Apache::response::foilgroup{"$name.value"} =
-	$Apache::response::conceptgroup{"$name.value"};
-      $Apache::response::foilgroup{"$name.text"} =
-	$Apache::response::conceptgroup{"$name.text"};
-      $Apache::response::foilgroup{"$name.location"} =
-	$Apache::response::conceptgroup{"$name.location"};
-      my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
-      $Apache::response::foilgroup{"$name.concept"} = $concept;
-      &Apache::lonxml::debug("Selecting $name in $concept");
-      if ($target eq 'analyze') {
-	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
-        push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
-	      $concept);
-	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
-	  $Apache::response::conceptgroup{'names'};
-	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
-	  push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
-		$name);
-	  $Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
-	    $Apache::response::conceptgroup{"$name.value"};
-	  $Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
-	    $Apache::response::conceptgroup{"$name.text"};
-	  $Apache::lonhomework::analyze{"$part_id.foil.location.$name"} =
-	    $Apache::response::conceptgroup{"$name.location"};
-	}
-      } elsif ($target eq 'web') {
-	  my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
-	  push(@{ $Apache::hint::option{"$part_id.concepts"} },
-	       $concept);
-	  $Apache::hint::option{"$part_id.concept.$concept"}=
-	      $Apache::response::conceptgroup{'names'};
-      }
-    }
+      &Apache::response::pick_foil_for_concept($target,
+					       ['value','text','location'],
+					       \%Apache::hint::option,
+					       $parstack,$safeeval);
   } elsif ($target eq 'edit') {
     $result=&Apache::edit::end_table();
   }
@@ -593,7 +556,7 @@ sub end_foil {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $text ='';
   my $result = '';
-  if ($target eq 'web' || $target eq 'tex') { 
+  if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 
       $text=&Apache::lonxml::endredirection;
       if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') { $text = '\vspace*{-2 mm}\item '.$text; }
   }
@@ -613,24 +576,16 @@ sub end_foil {
 	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
 	    $Apache::response::conceptgroup{"$name.text"} = '\vskip 4 mm $\triangleright$ '.$text;
 	} else {
-	    if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
-		$Apache::response::conceptgroup{"$name.text"} = ' $\triangleright$ '.$text;
-	    } else {
-		$Apache::response::conceptgroup{"$name.text"} = $text;
-	    }
+	    $Apache::response::conceptgroup{"$name.text"} = $text;
 	}
 	$Apache::response::conceptgroup{"$name.location"} = $location;
       } else {
 	push @{ $Apache::response::foilgroup{'names'} }, $name;
 	$Apache::response::foilgroup{"$name.value"} = $value;
-	if ($Apache::lonhomework::type eq 'exam') {
+	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
 	    $Apache::response::foilgroup{"$name.text"} = '\vskip 5 mm $\triangleright$ '.$text;
 	} else {
-	    if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
-		$Apache::response::foilgroup{"$name.text"} = ' $\triangleright$ '.$text;
-	    } else {
-		$Apache::response::foilgroup{"$name.text"} = $text;
-	    }
+	    $Apache::response::foilgroup{"$name.text"} = $text;
 	}
 	$Apache::response::foilgroup{"$name.location"} = $location;
       }