--- loncom/homework/radiobuttonresponse.pm 2004/03/31 05:23:59 1.87 +++ loncom/homework/radiobuttonresponse.pm 2011/08/26 22:40:17 1.150 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # mutliple choice style responses # -# $Id: radiobuttonresponse.pm,v 1.87 2004/03/31 05:23:59 albertel Exp $ +# $Id: radiobuttonresponse.pm,v 1.150 2011/08/26 22:40:17 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -18,53 +18,77 @@ # 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 +# 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::radiobuttonresponse; use strict; use HTML::Entities(); use Apache::lonlocal; +use Apache::lonnet; +use Apache::response; + +my $default_bubbles_per_line = 10; + BEGIN { &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse')); } +sub bubble_line_count { + my ($numfoils, $bubbles_per_line) = @_; + my $bubble_lines; + $bubble_lines = int($numfoils / $bubbles_per_line); + if (($numfoils % $bubbles_per_line) != 0) { + $bubble_lines++; + } + return $bubble_lines; + +} + + sub start_radiobuttonresponse { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result; + #when in a radiobutton response use these &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup')); push (@Apache::lonxml::namespace,'radiobuttonresponse'); my $id = &Apache::response::start_response($parstack,$safeeval); + %Apache::hint::radiobutton=(); undef(%Apache::response::foilnames); if ($target eq 'meta') { $result=&Apache::response::meta_package_write('radiobuttonresponse'); } elsif ($target eq 'edit' ) { - $result.=&Apache::edit::start_table($token). - ''.&Apache::lonxml::description($token). - &Apache::loncommon::help_open_topic('Radio_Response_Problems'). - "Delete:". - &Apache::edit::deletelist($target,$token) - ." ".&Apache::edit::end_row() - .&Apache::edit::start_spanning_row(); + $result.=&Apache::edit::start_table($token) + .''.&Apache::lonxml::description($token) + .&Apache::loncommon::help_open_topic('Radio_Response_Problems') + .'' + .''.&mt('Delete?').' ' + .&Apache::edit::deletelist($target,$token) + .'' + .' '.&Apache::edit::end_row() + .&Apache::edit::start_spanning_row(); $result.= &Apache::edit::text_arg('Max Number Of Shown Foils:','max', - $token,'4'). - &Apache::edit::select_arg('Randomize Foil Order','randomize', - ['yes','no'],$token). + $token,'4').' 'x 3 . + &Apache::edit::select_arg('Randomize Foil Order:','randomize', + ['yes','no'],$token).' 'x 3 . + &Apache::edit::select_arg('Display Direction:','direction', + ['vertical','horizontal'],$token). &Apache::edit::end_row(). &Apache::edit::start_spanning_row()."\n"; } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'max', - 'randomize'); + 'randomize','direction'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } } elsif ($target eq 'tex') { my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval, @@ -77,10 +101,17 @@ sub start_radiobuttonresponse { $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}'; } elsif ($type eq 'i') { $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}'; + } else { + $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}'; } - $result .= '\begin{enumerate}'; + if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') { + $result .= '\begin{itemize}'; + } else { + $result .= '\begin{enumerate}'; + } } elsif ($target eq 'analyze') { my $part_id="$Apache::inputtags::part.$id"; + $Apache::lonhomework::analyze{"$part_id.type"} = 'radiobuttonresponse'; push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id); } return $result; @@ -90,7 +121,13 @@ sub end_radiobuttonresponse { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result; if ($target eq 'edit') { $result=&Apache::edit::end_table(); } - if ($target eq 'tex') { $result .= '\end{enumerate}'; } + if ($target eq 'tex' ) { + if($env{'form.pdfFormFields'} eq 'yes' and $Apache::inputtags::status[-1] eq 'CAN_ANSWER') { + $result .= '\end{itemize}'; + } else { + $result .= '\end{enumerate}'; + } + } &Apache::response::end_response; pop @Apache::lonxml::namespace; &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup')); @@ -104,7 +141,7 @@ sub start_foilgroup { my $result; %Apache::response::foilgroup=(); $Apache::radiobuttonresponse::conceptgroup=0; - &Apache::response::setrandomnumber(); + &Apache::response::pushrandomnumber(undef,$target); if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') { $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]'; } @@ -112,36 +149,58 @@ sub start_foilgroup { } sub storesurvey { - if ( !defined($ENV{'form.submitted'})) { return ''; } - my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']}; + my ($style) = @_; + if ( !&Apache::response::submitted() ) { return ''; } + my $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']}; &Apache::lonxml::debug("Here I am!:$response:"); if ( $response !~ /[0-9]+/) { return ''; } + my $part = $Apache::inputtags::part; my $id = $Apache::inputtags::response['-1']; my @whichfoils=@{ $Apache::response::foilgroup{'names'} }; my %responsehash; $responsehash{$whichfoils[$response]}=$response; - $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=&Apache::lonnet::hash2str(%responsehash); - $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='SUBMITTED'; + my $responsestr=&Apache::lonnet::hash2str(%responsehash); + $Apache::lonhomework::results{"resource.$part.$id.submission"}= + $responsestr; + my %previous=&Apache::response::check_for_previous($responsestr,$part,$id); + my $ad; + if ($style eq 'anonsurvey') { + $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS'; + } elsif ($style eq 'anonsurveycred') { + $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS_CREDIT'; + } elsif ($style eq 'surveycred') { + $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED_CREDIT'; + } else { + $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED'; + } + &Apache::response::handle_previous(\%previous,$ad); &Apache::lonxml::debug("submitted a $response
\n"); return ''; } + sub grade_response { - my ($max,$randomize)=@_; - #keep the random numbers the same must always call this - my ($answer,@whichfoils)=&whichfoils($max,$randomize); - if (!defined($ENV{'form.submitted'})) { return; } + my ($answer, $whichfoils, $bubbles_per_line)=@_; + + if ( !&Apache::response::submitted() ) { return; } my $response; - if ($ENV{'form.submitted'} eq 'scantron') { - $response=&Apache::response::getresponse(); + + if ($env{'form.submitted'} eq 'scantron') { + $response = &Apache::response::getresponse(1,undef, + &bubble_line_count(scalar(@{ $whichfoils}), + $bubbles_per_line), + $bubbles_per_line); + } else { - $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']}; + $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']}; } + + if ( $response !~ /[0-9]+/) { return; } my $part=$Apache::inputtags::part; my $id = $Apache::inputtags::response['-1']; my %responsehash; - $responsehash{$whichfoils[$response]}=$response; + $responsehash{$whichfoils->[$response]}=$response; my $responsestr=&Apache::lonnet::hash2str(%responsehash); my %previous=&Apache::response::check_for_previous($responsestr, $part,$id); @@ -162,40 +221,77 @@ sub end_foilgroup { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result; + my $bubble_lines; + my $bubbles_per_line; + my $answer_count; + my $id = $Apache::inputtags::response['-1']; + my $part = $Apache::inputtags::part; + $bubbles_per_line = + &Apache::response::get_response_param($Apache::inputtags::part."_$id", + 'numbubbles', + $default_bubbles_per_line); + + if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') { my $style = $Apache::lonhomework::type; - if ( $style eq 'survey' && $target ne 'analyze') { + my $direction = &Apache::lonxml::get_param('direction',$parstack, + $safeeval,'-2'); + if ( (($style eq 'survey') || ($style eq 'surveycred') || + ($style eq 'anonsurvey') || ($style eq 'anonsurveycred')) + && ($target ne 'analyze')) { if ($target eq 'web' || $target eq 'tex') { - $result=&displayallfoils(); + $result=&displayallfoils($direction, $target); } elsif ( $target eq 'answer' ) { $result=&displayallanswers(); } elsif ( $target eq 'grade' ) { - $result=&storesurvey(); + $result=&storesurvey($style); } + $answer_count = scalar(@{$Apache::response::foilgroup{'names'}}); + } else { + my $name; my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval, '-2'); my $randomize = &Apache::lonxml::get_param('randomize',$parstack, $safeeval,'-2'); + my ($answer, @shown) = &whichfoils($max, $randomize); + $answer_count = scalar(@shown); + if ($target eq 'web' || $target eq 'tex') { - $result=&displayfoils($target,$max,$randomize); + $result=&displayfoils($target, + $answer, \@shown, + $direction, + $bubbles_per_line); } elsif ($target eq 'answer' ) { - $result=&displayanswers($max,$randomize); + $result=&displayanswers($answer, \@shown, $bubbles_per_line); } elsif ( $target eq 'grade') { - &grade_response($max,$randomize); + &grade_response($answer, \@shown, $bubbles_per_line); } elsif ( $target eq 'analyze') { - my @shown = &whichfoils($max,$randomize); + my $bubble_lines = &bubble_line_count($answer_count, + $bubbles_per_line); &Apache::response::analyze_store_foilgroup(\@shown, ['text','value','location']); - my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]"; + my $part_id="$part.$id"; push (@{ $Apache::lonhomework::analyze{"$part_id.options"} }, ('true','false')); + } } + $Apache::lonxml::post_evaluate=0; + } + if ($target eq 'web') { + &Apache::response::setup_prior_tries_hash(\&format_prior_answer, + [\%Apache::response::foilgroup]); + } + &Apache::response::poprandomnumber(); + $bubble_lines = &bubble_line_count($answer_count, $bubbles_per_line); + &Apache::lonxml::increment_counter($bubble_lines, + "$part.$id"); + if ($target eq 'analyze') { + &Apache::lonhomework::set_bubble_lines(); } - &Apache::lonxml::increment_counter(); return $result; } @@ -217,42 +313,123 @@ sub getfoilcounts { return ($truecnt,$falsecnt); } +sub format_prior_answer { + my ($mode,$answer,$other_data) = @_; + my $foil_data = $other_data->[0]; + my %response = &Apache::lonnet::str2hash($answer); + my ($name) = keys(%response); + return ''. + $foil_data->{$name.'.text'}.''; + +} + sub displayallfoils { + my ($direction, $target)=@_; my $result; &Apache::lonxml::debug("survey style display"); - my @names = @{ $Apache::response::foilgroup{'names'} }; + my @names; + if ( $Apache::response::foilgroup{'names'} ) { + @names= @{ $Apache::response::foilgroup{'names'} }; + } + my $temp=0; + my $i =0; my $id=$Apache::inputtags::response['-1']; my $part=$Apache::inputtags::part; - my $lastresponse= - $Apache::lonhomework::history{"resource.$part.$id.submission"}; + my ($lastresponse,$newvariation,$showanswer); + if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') || + ($Apache::lonhomework::type eq 'randomizetry')) && + ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) { + if ($env{'form.'.$part.'.rndseed'} ne + $Apache::lonhomework::history{"resource.$part.rndseed"}) { + $newvariation = 1; + } + } + $showanswer = &Apache::response::show_answer(); + unless ((($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') || ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) && (defined($env{'form.grade_symb'})) || + ($newvariation && !$showanswer)) { + $lastresponse = + $Apache::lonhomework::history{"resource.$part.$id.submission"}; + } + if ($direction eq 'horizontal') { $result.=''; } my %lastresponse=&Apache::lonnet::str2hash($lastresponse); - if (&Apache::response::show_answer() ) { + if ($showanswer) { foreach my $name (@names) { if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') { - $result.="
"; + if (($direction eq 'horizontal') && ($target ne 'tex')) { + $result.=""; } } } } else { foreach my $name (@names) { if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') { - $result.="
\n"; + if ($direction eq 'horizontal') { + $result.=""; } + } else { + $result.='\vskip 0 mm '; + } } } } + + if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.='
"; + } else { + if ($target eq 'tex') { + $result .= '\item \vskip -2mm '; + } else { + $result.="
"; + } + } if (defined($lastresponse{$name})) { - $result.=''; + if ($target eq 'tex') { + $result .= '}'; + } else { + $result.=''; + } } $result .= $Apache::response::foilgroup{$name.'.text'}; - if (defined($lastresponse{$name})) { + if (defined($lastresponse{$name}) && ($target ne 'tex')) { $result.=''; } + if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="		"; + } else { + if ($target eq 'tex') { + if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') { + my $fieldname = $env{'request.symb'}.'&part_'. $Apache::inputtags::part + .'&radiobuttonresponse'.'&HWVAL_'.$Apache::inputtags::response['-1']; + $result .= '\item[{'.&Apache::lonxml::print_pdf_radiobutton($fieldname,$temp).'}]' + .$Apache::response::foilgroup{$name.'.text'}."\n"; + } else { + $result .= '\item \vskip -2mm '; + } + } else { + $result.="
"; + } + } + if ($target eq 'tex') { + if($env{'form.pdfFormFields'} ne 'yes' or $Apache::inputtags::status[-1] ne 'CAN_ANSWER') { + $result .= '$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\'; #' stupid emacs + } + $i++; + } else { + $result .= '
'; } return $result; } + sub whichfoils { my ($max,$randomize)=@_; @@ -262,7 +439,7 @@ sub whichfoils { my ($truecnt,$falsecnt) = &getfoilcounts(); my $count=0; # we will add in 1 of the true statements - if (($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; } + if ( $max>0 && ($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; $max=$count; } my $answer=int(&Math::Random::random_uniform() * ($count)); &Apache::lonxml::debug("Count is $count, $answer is $answer"); my @names; @@ -286,6 +463,13 @@ sub whichfoils { &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in ",'<>&"')); } } + if ((!$havetrue) && + ($Apache::lonhomework::type ne 'survey') && + ($Apache::lonhomework::type ne 'surveycred') && + ($Apache::lonhomework::type ne 'anonsurvey') && + ($Apache::lonhomework::type ne 'anonsurveycred')) { + &Apache::lonxml::error(&mt('There are no true statements available.').'
'); + } } else { my $current=0; &Apache::lonhomework::showhash(%Apache::response::foilgroup); @@ -343,9 +527,13 @@ sub whichfoils { &Apache::lonxml::debug("Answer wants $answer"); my $truename=$truelist[$whichtrue]; my $dosplice=1; - if ($notrue && $Apache::lonhomework::type ne 'survey') { + if (($notrue) && + ($Apache::lonhomework::type ne 'survey') && + ($Apache::lonhomework::type ne 'surveycred') && + ($Apache::lonhomework::type ne 'anonsurvey') && + ($Apache::lonhomework::type ne 'anonsurveycred')) { $dosplice=0; - &Apache::lonxml::error("There are no true statements available.
"); + &Apache::lonxml::error(&mt('There are no true statements available.').'
'); } #insert the true statement, keeping track of where it wants to be if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) { @@ -367,8 +555,12 @@ sub whichfoils { $dosplice=0; } else { if ($topcount>0 || $bottomcount>0) { - $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1)) - + $topcount; + my $inc = 1; + if (($bottomcount > 0) && ($Apache::lonhomework::type ne 'exam')) { + $inc = 2; + } + $answer=int(&Math::Random::random_uniform() * ($#whichfalse+$inc)) + + $topcount; } } &Apache::lonxml::debug("Answer now wants $answer"); @@ -387,65 +579,132 @@ sub whichfoils { } sub displayfoils { - my ($target,$max,$randomize)=@_; + my ($target,$answer,$whichfoils,$direction, $bubbles_per_line)=@_; my $result; - my ($answer,@whichfoils)=&whichfoils($max,$randomize); my $part=$Apache::inputtags::part; my $solved=$Apache::lonhomework::history{"resource.$part.solved"}; if ( ($target ne 'tex') && &Apache::response::show_answer() ) { - foreach my $name (@whichfoils) { + if ($direction eq 'horizontal') { + if ($target ne 'tex') { + $result.=''; + } + } + foreach my $name (@{ $whichfoils }) { + if ($direction eq 'horizontal') { + if ($target ne 'tex') { $result.=''; } + } + } + if ($direction eq 'horizontal') { + if ($target ne 'tex') { + $result.='
'; } + } if ($target ne 'tex') { $result.="
"; } else { $result.='\item \vskip -2 mm '; } if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { - if ($target ne 'tex') { $result.='Correct:'; } else { $result.='Correct: \textbf{';} + if ($target ne 'tex') { + $result.=&mt('Correct:').''; + } else { + $result.=&mt('Correct:').' \textbf{'; + } } else { - $result.='Incorrect:'; - } - if ($target ne 'tex') { - $result.=$Apache::response::foilgroup{$name.'.text'}."\n"; - } else { - $result.=$Apache::response::foilgroup{$name.'.text'}; + $result.=&mt('Incorrect:'); } + if ($target eq 'web') { $result.=""; } if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { if ($target ne 'tex') { $result.='';} else {$result.='}';} } + if ($direction eq 'horizontal') { + if ($target ne 'tex') { $result.='
'; + } } } else { my @alphabet = ('A'..'Z'); my $i = 0; + my $bubble_number = 0; + my $line = 0; my $temp=0; my $id=$Apache::inputtags::response['-1']; my $part=$Apache::inputtags::part; - my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"}; + my ($lastresponse,$newvariation); + if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') || + ($Apache::lonhomework::type eq 'randomizetry')) && + ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) { + if ($env{'form.'.$part.'.rndseed'} ne + $Apache::lonhomework::history{"resource.$part.rndseed"}) { + $newvariation = 1; + } + } + unless ($newvariation) { + $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"}; + } my %lastresponse=&Apache::lonnet::str2hash($lastresponse); - foreach my $name (@whichfoils) { + if ($target ne 'tex' && $direction eq 'horizontal') { + $result.=""; + } + foreach my $name (@{ $whichfoils }) { if ($target ne 'tex') { - $result.="
\n"; + if ($direction eq 'horizontal') { + $result.=""; } $temp++; } + if ($target ne 'tex' && $direction eq 'horizontal') { + $result.="
"; + } else { + $result.="
"; + } + } + if ($target ne 'tex') { + $result.= '
"; + } } - if ($target ne 'tex') { $result.="
"; } else { $result.='\vskip 0 mm '; } + if ($target ne 'tex') { if ($direction ne 'horizontal') { $result.="
";} } else { $result.='\vskip 0 mm '; } return $result; } sub displayallanswers { - my @names = @{ $Apache::response::foilgroup{'names'} }; - + my @names; + if ( $Apache::response::foilgroup{'names'} ) { + @names= @{ $Apache::response::foilgroup{'names'} }; + } my $result=&Apache::response::answer_header('radiobuttonresponse'); foreach my $name (@names) { $result.=&Apache::response::answer_part('radiobuttonresponse', @@ -456,13 +715,23 @@ sub displayallanswers { } sub displayanswers { - my ($max,$randomize)=@_; - my ($answer,@whichopt) = &whichfoils($max,$randomize); - my $result=&Apache::response::answer_header('radiobuttonresponse'); - foreach my $name (@whichopt) { + my ($answer, $whichopt, $bubbles_per_line)=@_; + my $result; + + if ($Apache::lonhomework::type eq 'exam') { + my $line = int($answer/$bubbles_per_line); + my $correct = ('A'..'Z')[$answer%$bubbles_per_line]; + $result .= &Apache::response::answer_header('radiobuttonresponse', + $line); + $result .= &Apache::response::answer_part('radiobuttonresponse', + $correct); + } else { + $result .= &Apache::response::answer_header('radiobuttonresponse'); + } + foreach my $name (@{ $whichopt }) { $result.=&Apache::response::answer_part('radiobuttonresponse', - $Apache::response::foilgroup{$name.'.value'}) - } + $Apache::response::foilgroup{$name.'.value'}); + } $result.=&Apache::response::answer_footer('radiobuttonresponse'); return $result; } @@ -510,6 +779,9 @@ sub start_foil { my $result=''; if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { &Apache::lonxml::startredirection; + if ($target eq 'analyze') { + &Apache::response::check_if_computed($token,$parstack,$safeeval,'value'); + } } elsif ($target eq 'edit') { $result=&Apache::edit::tag_start($target,$token); $result.=&Apache::edit::text_arg('Name:','name',$token); @@ -543,9 +815,15 @@ sub end_foil { my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval); if ($value ne 'unused') { my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval); - if (!$name) { $name=$Apache::lonxml::curdepth; } + if ($name eq "") { + &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.')); + $name=$Apache::lonxml::curdepth; + } + if ($name eq "0") { + &Apache::lonxml::error(&mt('Foil name [_1] is not supported. Please choose another name.',''.$name.'')); + } if (defined($Apache::response::foilnames{$name})) { - &Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique.",$name)); + &Apache::lonxml::error(&mt('Foil name [_1] appears more than once. Foil names need to be unique.',''.$name.'')); } $Apache::response::foilnames{$name}++; my $location =&Apache::lonxml::get_param('location',$parstack, @@ -576,4 +854,87 @@ sub insert_foil { } 1; __END__ + + + +=head1 NAME + +Apache::radiobuttonresponse + +=head1 SYNOPSIS + +Handles multiple-choice style responses. + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + +=head1 SUBROUTINES + +=over + +=item start_radiobuttonresponse() + +=item bubble_line_count() + +=item end_radiobuttonresponse() + +=item start_foilgroup() + +=item storesurvey() + +=item grade_response() + +=item end_foilgroup() + +=item getfoilcounts() + +=item format_prior_answer() + +=item displayallfoils() + +=item &whichfoils($max,$randomize) + +Randomizes the list of foils. +Respects + - each foils desire to be randomized + - the existance of Concept groups of foils (select 1 foil from each) + - and selects a single correct statement from all possilble true statments + - and limits it to a toal of $max foils + +WARNING: this routine uses the random number generator, it should only +be called once per target, otherwise it can cause randomness changes in +homework problems. + +Arguments + $max - maximum number of foils to select (including the true one) + (so a max of 5 is: 1 true, 4 false) + + $randomize - whether to randomize the listing of foils, by default + will randomize, only if randomize is 'no' will it not + +Returns + $answer - location in the array of the correct answer + @foils - array of foil names in to display order + +=item displayfoils() + +=item displayallanswers() + +=item displayanswers() + +=item start_conceptgroup() + +=item end_conceptgroup() + +=item insert_conceptgroup() + +=item start_foil() + +=item end_foil() + +=item insert_foil() + +=back + +=cut