# The LearningOnline Network with CAPA # definition of tags that give a structure to a document # # $Id: bridgetask.pm,v 1.2 2005/03/17 21:21:11 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 start_Task { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; #&initialize_storage(); my $status; my $accessmsg; #should get back a or the neccesary stuff to start XML/MathML my ($result,$head_tag_start,$body_tag_start,$form_tag_start)= &Apache::structuretags::page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { ($status,$accessmsg) = &Apache::lonhomework::check_task_access('0'); push (@Apache::inputtags::status,$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 'INVALID_ACCESS')) { my $bodytext=&Apache::lonxml::get_all_text("/task",$parser); if ( $target eq "web" ) { $result.= $head_tag_start.''; my $msg=$body_tag_start; if ($status eq 'UNAVAILABLE') { $msg.='

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

'; } 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 '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') { $result.=&Apache::lonxml::xmlend().''; } } if ($target eq 'grade') { #&Apache::lonhomework::showhash(%Apache::lonhomework::results); #&finalize_storage(); } } elsif ($target eq 'meta') { $result.=''."\n"; #$result.=&Apache::response::meta_part_order(); #$result.=&Apache::response::meta_response_order(); } return $result; } sub start_ClosingParagraph { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { $result='
Closing
'; } return $result; } sub end_ClosingParagraph { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web') { $result='
'; } return $result; } my %dimension; my $dim_id; sub start_Dimension { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; undef(%dimension); $dim_id=$Apache::lonxml::curdepth; 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 my $instance=$dimension{'instances'}->[0]; $result=$dimension{'intro'}. $dimension{$instance.'.text'}. '
Criteria
'; foreach my $id (@{$dimension{$instance.'.criterias'}}) { $result.=$dimension{$instance.'.criteria.'.$id}. '
'; } $result=~s/
$//; $result.='
'; } 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(); } else { $result='
Intro
'; } } 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(); } else { $result='
'; } } return $result; } my $instance_id; sub start_Instance { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; push(@{$dimension{'instances'}},$Apache::lonxml::curdepth); $instance_id=$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,$safeeval)=@_; if ($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,$safeeval)=@_; if ($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 ''; } 1; __END__