--- loncom/homework/structuretags.pm 2004/02/16 20:30:34 1.242 +++ loncom/homework/structuretags.pm 2007/09/10 16:25:38 1.394 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # definition of tags that give a structure to a document # -# $Id: structuretags.pm,v 1.242 2004/02/16 20:30:34 albertel Exp $ +# $Id: structuretags.pm,v 1.394 2007/09/10 16:25:38 www Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,9 +25,7 @@ # # http://www.lon-capa.org/ # -# 2/19 Guy -# 6/26/2001 fixed extra web display at end of tags -# 8/17,8/18,8/20 Gerd Kortemeyer +### package Apache::structuretags; @@ -38,17 +36,30 @@ use Apache::File(); use Apache::lonmenu; use Apache::lonlocal; use Apache::lonxml; - +use Apache::lonenc(); +use Time::HiRes qw( gettimeofday tv_interval ); +use lib '/home/httpd/lib/perl/'; +use LONCAPA; + BEGIN { - &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext', -'simpleeditbutton','definetag')); + &Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag')); } sub start_web { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; - my $bodytext=&Apache::lonxml::get_all_text("/web",$parser); - if ($target eq 'web') { - return $bodytext; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + if ($target ne 'edit' && $target ne 'modified') { + my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style); + if ($target eq 'web' || $target eq 'webgrade') { + return $bodytext; + } + } elsif ($target eq "edit" ) { + my $bodytext = + &Apache::lonxml::get_all_text_unbalanced("/web",$parser); + my $result = &Apache::edit::tag_start($target,$token); + $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1); + return $result; + } elsif ( $target eq "modified" ) { + return $token->[4].&Apache::edit::modifiedfield("/web",$parser); } return ''; } @@ -58,11 +69,21 @@ sub end_web { } sub start_tex { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser); - if ($target eq 'tex') { - return $bodytext.' '; + if ($target ne 'edit' && $target ne 'modified') { + my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style); + if ($target eq 'tex') { + return $bodytext.' '; + } + } elsif ($target eq "edit" ) { + my $bodytext = + &Apache::lonxml::get_all_text_unbalanced("/tex",$parser); + my $result = &Apache::edit::tag_start($target,$token); + $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1); + return $result; + } elsif ( $target eq "modified" ) { + return $token->[4].&Apache::edit::modifiedfield("/tex",$parser); } return $result;; } @@ -72,7 +93,8 @@ sub end_tex { } sub page_start { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name, + $extra_head)=@_; my %found; foreach my $taginside (@$tagstack) { foreach my $taglookedfor ('html','body','form') { @@ -80,130 +102,207 @@ sub page_start { } } - my $result; - my $head_tag_start; - if (!defined($found{'html'})) { - $result=&Apache::londefdef::start_html($target,$token,$tagstack, - $parstack,$parser,$safeeval); - $head_tag_start=''.&Apache::lonmenu::registerurl(undef,$target); + if ($target eq 'tex') { + return + &Apache::londefdef::start_html($target,$token,$tagstack, + $parstack,$parser,$safeeval); + } + + $extra_head.= ' + +'; + + my %body_args; + if (defined($found{'html'})) { + $body_args{'skip_phases'}{'head'}=1; + } else { + + $extra_head .= &Apache::lonhtmlcommon::spellheader(); + + $extra_head .= &Apache::londefdef::generate_css_links(); + + if ($env{'request.state'} eq 'construct') { + $extra_head.=&Apache::edit::js_change_detection(). + "\n"; + } } - my $body_tag_start; - if (!defined($found{'body'})) { - $body_tag_start='"; - $body_tag_start.=$help; - } + + my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack, + $safeeval); + if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; } + + $body_args{'bgcolor'} = $bgcolor; + $body_args{'no_title'} = 1; + $body_args{'force_register'} = 1; + $body_args{'add_entries'} = \%add_entries; + if ($env{'environment.remote'} eq 'off' + && $env{'request.state'} eq 'construct') { + $body_args{'only_body'} = 1; + } + } + $body_args{'no_auto_mt_title'} = 1; + my $page_start = &Apache::loncommon::start_page($name,$extra_head, + \%body_args); + + if (!defined($found{'body'}) + && $env{'request.state'} ne 'construct' + && ($target eq 'web' || $target eq 'webgrade')) { + + my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser(); + if ($symb eq '' && !$publicuser) { + my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference"); + $help=&mt("Browsing resource, all submissions are temporary.")."
"; + $page_start .= $help; } } + + if (!defined($found{'body'})) { + $page_start .= &Apache::lonxml::message_location(); + } + my $form_tag_start; if (!defined($found{'form'})) { - $form_tag_start='
'; + $form_tag_start=''."\n"; + } } - return ($result,$head_tag_start,$body_tag_start,$form_tag_start); + return ($page_start,$form_tag_start); } #use Time::HiRes(); sub get_resource_name { my ($parstack,$safeeval)=@_; + my $name; if (defined($Apache::lonhomework::name)) { - return $Apache::lonhomework::name; - } - my $name=&Apache::lonnet::gettitle(); - if ($name eq '') { - $name=&Apache::lonnet::EXT('resource.title'); - if ($name eq 'con_lost') { $name = ''; } - } - if ($name!~/\S+/) { - $name=$ENV{'request.uri'}; - $name=~s-.*/([^/]+)$-$1-; + $name = $Apache::lonhomework::name; + } else { + my ($symb)=&Apache::lonnet::whichuser(); + $name=&Apache::lonnet::gettitle($symb); + if ($name eq '') { + $name=&Apache::lonnet::EXT('resource.title'); + if ($name eq 'con_lost') { $name = ''; } + } + if ($name!~/\S+/) { + $name=$env{'request.uri'}; + $name=~s-.*/([^/]+)$-$1-; + } + # The name has had html tags escaped: + + $name=~s/<//gs; + + $Apache::lonhomework::name=$name; } - $Apache::lonhomework::name=$name; return $name; } sub setup_rndseed { my ($safeeval)=@_; my $rndseed; - my ($symb)=&Apache::lonxml::whichuser(); - if ($ENV{'request.state'} eq "construct" || $symb eq '') { - $rndseed=$ENV{'form.rndseed'}; + my ($symb)=&Apache::lonnet::whichuser(); + if ($env{'request.state'} eq "construct" + || $symb eq '' + || $Apache::lonhomework::type eq 'practice' + || $Apache::lonhomework::history{'resource.CODE'}) { + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['rndseed']); + $rndseed=$env{'form.rndseed'}; if (!$rndseed) { $rndseed=$Apache::lonhomework::history{'rndseed'}; if (!$rndseed) { $rndseed=time; } - $ENV{'form.rndseed'}=$rndseed; + $env{'form.rndseed'}=$rndseed; } - if ($ENV{'form.resetdata'} eq &mt('New Problem Variation') || - $ENV{'form.newrandomization'} eq &mt('New Randomization')) { + if ( ($env{'form.resetdata'} eq &mt('New Problem Variation') + && $env{'form.submitted'} eq 'yes') || + $env{'form.newrandomization'} eq &mt('New Randomization')) { srand(time); $rndseed=int(rand(2100000000)); - $ENV{'form.rndseed'}=$rndseed; - delete($ENV{'form.resetdata'}); - delete($ENV{'form.newrandomization'}); + $env{'form.rndseed'}=$rndseed; + delete($env{'form.resetdata'}); + delete($env{'form.newrandomization'}); } if (defined($rndseed) && $rndseed ne int($rndseed)) { - $rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed)); + $rndseed=join(':',&Apache::lonnet::digest($rndseed)); } + if ($Apache::lonhomework::history{'resource.CODE'}) { + $rndseed=&Apache::lonnet::rndseed(); + } if ($safeeval) { &Apache::lonxml::debug("Setting rndseed to $rndseed"); - &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval); + &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval); } } return $rndseed; } +sub remember_problem_state { + return ' + + + '; +} + sub problem_edit_header { - return ' + return ''. + &Apache::structuretags::remember_problem_state().' - - -
- -
'. - &Apache::loncommon::help_open_topic('Problem_Editor_XML_Index', - 'Problem Editing Help').''. - &Apache::loncommon::help_open_faq(5). - &Apache::loncommon::help_open_bug('Authoring').'
'. - '
'; + + +
+ +
'. + &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help') + .'
'. + '
'; } sub problem_edit_footer { return '

- '; + '. + &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()). + "\n\n".&Apache::loncommon::end_page(); } sub option { my ($value,$name) = @_; my $result =" ".&option('problem','problemtype').&mt("Homework problem")." ".&option('survey' ,'problemtype').&mt("Survey Question")." @@ -257,31 +368,67 @@ Feedback Mode:
"; - my $numtoanalyze=$ENV{'form.numtoanalyze'}; - if (!$numtoanalyze) { $numtoanalyze=20; } - $result.= ' for + my $numtoanalyze=$env{'form.numtoanalyze'}; + if (!$numtoanalyze) { $numtoanalyze=20; } + $result.= ' for '.&mt('versions of this problem'). '.'.&Apache::loncommon::help_open_topic("Analyze_Problem", '',undef,undef,300). '
'; + } elsif ($Apache::lonhomework::parsing_a_task) { + $result.=" + +Problem Status: + + + +
"; + } return $result; } sub initialize_storage { - %Apache::lonhomework::results=(); - %Apache::lonhomework::history=(); - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); - if ($ENV{'request.state'} eq 'construct' || $symb eq '') { + my ($given_symb) = @_; + undef(%Apache::lonhomework::results); + undef(%Apache::lonhomework::history); + my ($symb,$courseid,$domain,$name) = + &Apache::lonnet::whichuser($given_symb); + + # anonymous users (CODEd exams) have no data + if ($name eq 'anonymous' + && !defined($domain)) { + return; + } + + if ($env{'request.state'} eq 'construct' + || $symb eq '' + || $Apache::lonhomework::type eq 'practice') { + + my $namespace = $symb || $env{'request.uri'}; + if ($env{'form.resetdata'} eq &mt('Reset Submissions') || + ($env{'form.resetdata'} eq &mt('New Problem Variation') + && $env{'form.submitted'} eq 'yes') || + $env{'form.newrandomization'} eq &mt('New Randomization')) { + &Apache::lonnet::tmpreset($namespace,'',$domain,$name); + &Apache::lonxml::debug("Attempt reset"); + } %Apache::lonhomework::history= - &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name); + &Apache::lonnet::tmprestore($namespace,'',$domain,$name); my ($temp)=keys %Apache::lonhomework::history ; &Apache::lonxml::debug("Return message of $temp"); } else { %Apache::lonhomework::history= &Apache::lonnet::restore($symb,$courseid,$domain,$name); } + #ignore error conditions my ($temp)=keys %Apache::lonhomework::history ; if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } @@ -291,25 +438,78 @@ sub initialize_storage { # Stores away the result has to a student's environment # checks form.grade_ for specific values, other wises stores # to the running users environment +# Will increment totals for attempts, students, and corrects +# if running user has student role. sub finalize_storage { + my ($given_symb) = @_; my $result; - my ($temp) = keys %Apache::lonhomework::results; - if ( $temp ne '' ) { - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); - if ($ENV{'request.state'} eq 'construct' || $symb eq '') { - $Apache::lonhomework::results{'rndseed'}=$ENV{'form.rndseed'}; + if (%Apache::lonhomework::results) { + my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results)); + delete(@Apache::lonhomework::results{@remove}); + my ($symb,$courseid,$domain,$name) = + &Apache::lonnet::whichuser($given_symb); + if ($env{'request.state'} eq 'construct' + || $symb eq '' + || $Apache::lonhomework::type eq 'practice') { + my $namespace = $symb || $env{'request.uri'}; + $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'}; $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results, - $ENV{'request.uri'},'',$domain,$name); + $namespace,'',$domain,$name); &Apache::lonxml::debug('Construct Store return message:'.$result); } else { $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results, $symb,$courseid,$domain,$name); &Apache::lonxml::debug('Store return message:'.$result); + if ($env{'request.role'} =~/^st/) { + &store_aggregates($symb,$courseid); + } } + } else { + &Apache::lonxml::debug('Nothing to store'); } return $result; } +# -------------------------------------------------------------store_aggregates +# Sends hash of values to be incremented in nohist_resourcetracker.db +# for the course. Increments total number of attempts, unique students +# and corrects for each part for an instance of a problem, as appropriate. +sub store_aggregates { + my ($symb,$courseid) = @_; + my %aggregate; + my @parts; + my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cname = $env{'course.'.$env{'request.course.id'}.'.num'}; + foreach my $key (keys(%Apache::lonhomework::results)) { + if ($key =~ /resource\.([^\.]+)\.tries/) { + push(@parts, $1); + } + } + foreach my $part (@parts) { + if ($Apache::lonhomework::results{'resource.'.$part.'.award'} + eq 'APPROX_ANS' || + $Apache::lonhomework::results{'resource.'.$part.'.award'} + eq 'EXACT_ANS') { + $aggregate{$symb."\0".$part."\0correct"} = 1; + } + if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) { + $aggregate{$symb."\0".$part."\0users"} = 1; + } else { + my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]); + if ($last_reset) { + if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) { + $aggregate{$symb."\0".$part."\0users"} = 1; + } + } + } + $aggregate{$symb."\0".$part."\0attempts"} = 1; + } + if (keys (%aggregate) > 0) { + &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate, + $cdomain,$cname); + } +} + sub checkout_msg { my %lt=&Apache::lonlocal::texthash( 'resource'=>'The resource needs to be checked out', @@ -317,31 +517,58 @@ sub checkout_msg { 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.', 'checkout'=>'Check out Exam for Viewing', 'checkout?'=>'Check out Exam?'); + my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'}); return (<$lt{'resource'}

$lt{'id_expln'}

$lt{'warning'}

-
+
ENDCHECKOUT } +sub firstaccess_msg { + my ($time,$symb)=@_; + my ($map)=&Apache::lonnet::decode_symb($symb); + my $foldertitle=&Apache::lonnet::gettitle($map); + &Apache::lonxml::debug("map is $map title is $foldertitle"); + my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'}); + return (<The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle". +
+ + +
+ENDCHECKOUT +} + sub init_problem_globals { my ($type)=@_; #initialize globals + # For problems, we start out in part 0 (outside a tag). + # and part 0 is used to describe the main body of the + # if ($type eq 'problem') { $Apache::inputtags::part='0'; @Apache::inputtags::partlist=('0'); + $Apache::lonhomework::problemstatus=&get_problem_status('0'); + $Apache::lonhomework::ignore_response_errors=0; - $Apache::lonhomework::problemstatus=&get_problem_status('0') - } else { + } elsif ($type eq 'library') { $Apache::inputtags::part=''; @Apache::inputtags::partlist=(); $Apache::lonhomework::problemstatus=''; + $Apache::lonhomework::ignore_response_errors=1; + + } elsif ($type eq 'Task') { + $Apache::inputtags::part='0'; + @Apache::inputtags::partlist=('0'); + $Apache::lonhomework::problemstatus=''; + $Apache::lonhomework::ignore_response_errors=1; } @Apache::inputtags::responselist = (); @Apache::inputtags::importlist = (); @@ -353,7 +580,8 @@ sub init_problem_globals { @Apache::structuretags::whileline=(); $Apache::lonhomework::scantronmode=0; undef($Apache::lonhomework::name); - + undef($Apache::lonhomework::default_type); + undef($Apache::lonhomework::type); } sub reset_problem_globals { @@ -365,11 +593,16 @@ sub reset_problem_globals { #detect if we try to do 2 problems in one file # undef($Apache::lonhomework::parsing_a_problem); undef($Apache::lonhomework::name); + undef($Apache::lonhomework::default_type); + undef($Apache::lonhomework::type); + undef($Apache::lonhomework::scantronmode); + undef($Apache::lonhomework::problemstatus); + undef($Apache::lonhomework::ignore_response_errors); } sub set_problem_state { my ($part)=@_; - if ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct') { + if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') { $Apache::lonhomework::history{"resource.$part.solved"}= 'correct_by_student'; } @@ -377,48 +610,53 @@ sub set_problem_state { sub get_problem_status { my ($part)=@_; - my $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus"); - &Apache::lonxml::debug("problem status for $part is $problem_status"); - &Apache::lonxml::debug("env probstat is ".$ENV{'form.problemstatus'}); - if ($ENV{'request.state'} eq 'construct' && - defined($ENV{'form.problemstatus'})) { - $problem_status=$ENV{'form.problemstatus'}; + my $problem_status; + if ($env{'request.state'} eq 'construct' && + defined($env{'form.problemstatus'})) { + $problem_status=$env{'form.problemstatus'}; + } else { + $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus"); + &Apache::lonxml::debug("problem status for $part is $problem_status"); + &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'}); } return $problem_status; } sub start_problem { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + # We'll use the redirection to fix up printing of duedates. + if (!$Apache::lonxml::metamode) { + &Apache::lonxml::startredirection(); + } + + # Problems don't nest and we don't allow more than one in + # a .problem file. + # if ( $Apache::inputtags::part ne '' || $Apache::lonhomework::parsing_a_problem) { &Apache::lonxml::error('Only one <problem> allowed in a .problem file'); - #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser); + #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style); return ''; } $Apache::lonhomework::parsing_a_problem=1; &init_problem_globals('problem'); - if (defined($ENV{'scantron.maxquest'})) { + if (defined($env{'scantron.maxquest'})) { $Apache::lonhomework::scantronmode=1; } if ($target ne 'analyze') { - &initialize_storage(); - if ($target eq 'web') { - &Apache::lonhomework::showhash(%Apache::lonhomework::history); - } - if ($ENV{'request.state'} eq 'construct') { &set_problem_state('0'); } $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type'); - if (($ENV{'request.state'} eq 'construct') && - defined($ENV{'form.problemtype'})) { - $Apache::lonhomework::type=$ENV{'form.problemtype'}; + if (($env{'request.state'} eq 'construct') && + defined($env{'form.problemtype'})) { + $Apache::lonhomework::type=$env{'form.problemtype'}; } - &Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:"); + &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:"); } if ($Apache::lonhomework::type eq '' ) { - my $uri=$ENV{'request.uri'}; + my $uri=$env{'request.uri'}; if ($uri=~/\.(\w+)$/) { $Apache::lonhomework::type=$1; &Apache::lonxml::debug("Using type of $1"); @@ -427,17 +665,36 @@ sub start_problem { &Apache::lonxml::debug("Using default type, problem, :$uri:"); } } + $Apache::lonhomework::default_type = $Apache::lonhomework::type; + + &initialize_storage(); + if ($target ne 'analyze' + && $env{'request.state'} eq 'construct') { + &set_problem_state('0'); + } + + if ($target eq 'web') { + &Apache::lonxml::debug(" grading history "); + &Apache::lonhomework::showhash(%Apache::lonhomework::history); + } #added vars to the scripting enviroment my $expression='$external::part=\''.$Apache::inputtags::part.'\';'; + $expression.='$external::type=\''.$Apache::lonhomework::type.'\';'; &Apache::run::run($expression,$safeeval); my $status; my $accessmsg; - #should get back a or the neccesary stuff to start XML/MathML - my ($result,$head_tag_start,$body_tag_start,$form_tag_start)= - &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); - if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) {$result='';} + my $name= &get_resource_name($parstack,$safeeval); + my ($result,$form_tag_start); + if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex' + || $target eq 'edit') { + ($result,$form_tag_start) = + &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval, + $name); + } + + if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';} if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); } if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || @@ -446,135 +703,131 @@ sub start_problem { if ($Apache::lonhomework::type eq 'exam') { my $token= $Apache::lonhomework::history{"resource.0.outtoken"}; - if (($ENV{'form.doescheckout'}) && (!$token)) { + if (($env{'form.doescheckout'}) && (!$token)) { $token=&Apache::lonxml::maketoken(); $Apache::lonhomework::history{"resource.0.outtoken"}= $token; } - $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token); + $result.=&Apache::lonxml::printtokenheader($target,$token); + } + if ($env{'form.markaccess'}) { + &Apache::lonnet::set_first_access('map'); } - #handle rand seed in construction space my $rndseed=&setup_rndseed($safeeval); - my ($symb)=&Apache::lonxml::whichuser(); - if ($ENV{'request.state'} ne "construct" && $symb eq '') { + my ($symb)=&Apache::lonnet::whichuser(); + if ($env{'request.state'} ne "construct" && + ($symb eq '' || $Apache::lonhomework::type eq 'practice')) { $form_tag_start.=''. ''. + value="'.&mt('New Problem Variation').'" />'; + if (exists($env{'form.username'})) { + $form_tag_start.= '
'; + value="'.$env{'form.username'}.'" />'; + } + if ($env{'request.role.adv'}) { + $form_tag_start.= + '