# The LearningOnline Network with CAPA # definition of tags that give a structure to a document # # $Id: bridgetask.pm,v 1.9 2005/04/04 18:14:58 albertel Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free 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::bridgetask; use strict; use Apache::lonnet; use Apache::File(); use Apache::lonmenu; use Apache::lonlocal; use Apache::lonxml; use Time::HiRes qw( gettimeofday tv_interval ); BEGIN { &Apache::lonxml::register('Apache::bridgetask',('Task','IntroParagraph','Dimension','Instance','InstanceText','Criteria','ClosingParagraph')); } sub initialize_bridgetask { # id of current Dimension, 0 means that no dimension is current # (inside only) $Apache::bridgetask::dimension=''; # list of all Dimension ids seen @Apache::bridgetask::dimensionlist=(); # list of all current Instance ids @Apache::bridgetask::instance=(); # list of all Instance ids seen in this problem @Apache::bridgetask::instancelist=(); } sub proctor_check_auth { my ($slot)=@_; my $user=$ENV{'form.proctorname'}; my $domain=$ENV{'form.proctordomain'}; my @allowed=split(",",$slot->{'proctor'}); foreach my $possible (@allowed) { my ($puser,$pdom)=(split('@',$possible)); if ($puser eq $user && $pdom eq $domain) { my $authhost=&Apache::lonnet::authenticate($puser,$ENV{'form.proctorpassword'},$pdom); if ($authhost ne 'no_host') { $Apache::lonhomework::results{'resource.checkedin'}= $user.'@'.$domain; return 1; } } } return 0; } sub add_previous_version_button { my $result; $result.=&mt(' Show a previously done version: [_1]',''); return $result; } sub start_Task { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; &Apache::structuretags::initialize_storage(); &Apache::lonhomework::showhash(%Apache::lonhomework::history); my ($status,$accessmsg,$slot); $Apache::lonhomework::parsing_a_task=1; #should get back a or the neccesary stuff to start XML/MathML my ($result,$head_tag_start,$body_tag_start,$form_tag_start)= &Apache::structuretags::page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); if ($target eq 'web') { $body_tag_start.=&add_previous_version_button(); } if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { ($status,$accessmsg,$slot) = &Apache::lonhomework::check_task_access('0'); push(@Apache::inputtags::status,$status); my $expression='$external::datestatus="'.$status.'";'; $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";'; &Apache::run::run($expression,$safeeval); &Apache::lonxml::debug("Got $status"); if (( $status eq 'CLOSED' ) || ( $status eq 'BANNED') || ( $status eq 'UNAVAILABLE') || ( $status eq 'NOT_IN_A_SLOT') || ( $status eq 'NEEDS_CHECKIN') || ( $status eq 'INVALID_ACCESS')) { my $bodytext=&Apache::lonxml::get_all_text("/task",$parser); if ( $target eq "web" ) { $result.= $head_tag_start.''.$body_tag_start; my $msg; if ($status eq 'UNAVAILABLE') { $msg.='

'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'

'; } elsif ($status eq 'NOT_IN_A_SLOT') { $msg.='

'.&mt('You are not currently signed up to work at this time and/or place.').'

'; } elsif ($status eq 'NEEDS_CHECKIN') { $msg.='

'.&mt('You need the Proctor to validate you.'). '

'.&proctor_validation_screen($slot); } elsif ($status ne 'NOT_YET_VIEWED') { $msg.='

'.&mt('Not open to be viewed').'

'; } if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') { $msg.='The problem '.$accessmsg; } $result.=$msg.'
'; } elsif ($target eq 'tex') { $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm'; if ($status eq 'UNAVAILABLE') { $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm '; } else { $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm "; } } elsif ($target eq 'grade') { if ($status eq 'NEEDS_CHECKIN') { if (&proctor_check_auth($slot)) { #FIXME immeadiatly add this to the grading queue # with slot->{'endtime'} for when grading can # begin on this resource } } } } elsif ($target eq 'web') { my $name= &Apache::structuretags::get_resource_name($parstack,$safeeval); $result.="$head_tag_start$name $body_tag_start \n $form_tag_start". ''; # if we are viewing someone else preserve that info if (defined $ENV{'form.grade_symb'}) { foreach my $field ('symb','courseid','domain','username') { $result .= ''."\n"; } } } } else { # page_start returned a starting result, delete it if we don't need it $result = ''; } return $result; } sub end_Task { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; my $status=$Apache::inputtags::status['-1']; if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex') { if ( (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) || ($target eq 'answer') || ($target eq 'tex') ) { if ($target eq 'web') { if ($status eq 'CAN_ANSWER') { $result.=''. &Apache::inputtags::file_selector('0',"bridgetask","*", 'portfolioonly'). "
"; $result.=&Apache::inputtags::gradestatus('0'); } $result.=&Apache::lonxml::xmlend().''; } } if ($target eq 'grade') { &Apache::lonhomework::showhash(%Apache::lonhomework::results); &Apache::structuretags::finalize_storage(); } } elsif ($target eq 'meta') { $result.=''."\n"; #$result.=&Apache::response::meta_part_order(); #$result.=&Apache::response::meta_response_order(); } undef($Apache::lonhomework::parsing_a_task); return $result; } sub start_ClosingParagraph { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { } return $result; } sub end_ClosingParagraph { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { } return $result; } my %dimension; sub start_Dimension { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; undef(%dimension); my $dim_id=$Apache::lonxml::curdepth; $Apache::bridgetask::dimension=$dim_id; push(@Apache::bridgetask::dimensionlist,$dim_id); undef(@Apache::bridgetask::instance); return ''; } sub end_Dimension { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { #FIXME just grabbing the first one for now, need #to randomly pick one until all have been seen #then start repicking &Apache::response::pushrandomnumber(); my $num_instances=scalar(@{$dimension{'instances'}}); my $which=&Math::Random::random_uniform_integer(1,0,$num_instances-1); my $instance=$dimension{'instances'}->[$which]; $result=$dimension{'intro'}.$dimension{$instance.'.text'}; #FIXME: don't show the criteria yet #foreach my $id (@{$dimension{$instance.'.criterias'}}) { # $result.=$dimension{$instance.'.criteria.'.$id}; #} } return $result; } sub start_IntroParagraph { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { if ($tagstack->[-2] eq 'Dimension') { &Apache::lonxml::startredirection(); } } return $result; } sub end_IntroParagraph { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { if ($tagstack->[-2] eq 'Dimension') { $dimension{'intro'}=&Apache::lonxml::endredirection(); } } return $result; } sub start_Instance { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; push(@{$dimension{'instances'}},$Apache::lonxml::curdepth); push(@Apache::bridgetask::instance,$Apache::lonxml::curdepth); push(@Apache::bridgetask::instancelist,$Apache::lonxml::curdepth); return ''; } sub end_Instance { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; return ''; } sub start_InstanceText { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; if ($target eq 'web') { &Apache::lonxml::startredirection(); } return ''; } sub end_InstanceText { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $instance_id=$Apache::bridgetask::instance[-1]; if ($target eq 'web') { $dimension{$instance_id.'.text'}=&Apache::lonxml::endredirection(); } return ''; } sub start_Criteria { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; if ($target eq 'web') { &Apache::lonxml::startredirection(); } return ''; } sub end_Criteria { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $instance_id=$Apache::bridgetask::instance[-1]; if ($target eq 'web') { my $criteria=&Apache::lonxml::endredirection(); my $id=$Apache::lonxml::curdepth; $dimension{$instance_id.'.criteria.'.$id}=$criteria; push(@{$dimension{$instance_id.'.criterias'}},$id); } return ''; } sub proctor_validation_screen { my ($slot) = @_; my (undef,undef,$domain,$user) = &Apache::lonxml::whichuser(); my $url=&Apache::lonnet::studentphoto($domain,$user,'jpg'); $user=$ENV{'form.proctorname'}; if ($ENV{'form.proctordomain'}) { $domain=$ENV{'form.proctordomain'}; } my $msg; if ($ENV{'form.proctorpassword'}) { $msg='

'.&mt("Failed to authenticate the proctor.") .'

'; } my $result= (<Proctor Validation

Your room's proctor needs to validate your access to this resource.

$msg
Proctor's Username:
Password:
Proctor's Domain:

Student who should be logged in is:

ENDCHECKOUT return $result; } 1; __END__