# The LearningOnline Network with CAPA # definition of tags that give a structure to a document # # $Id: structuretags.pm,v 1.284 2005/04/07 06:56:22 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::structuretags; 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::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 $bodytext; } return ''; } sub end_web { return ''; } sub start_tex { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser); if ($target eq 'tex') { return $bodytext.' '; } return $result;; } sub end_tex { return ''; } sub page_start { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my %found; foreach my $taginside (@$tagstack) { foreach my $taglookedfor ('html','body','form') { if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;} } } 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). &Apache::lonhtmlcommon::htmlareaheaders(). &Apache::lonhtmlcommon::spellheader(). &Apache::lonxml::fontsettings(); } my $body_tag_start; if (!defined($found{'body'}) && $env{'request.state'} eq 'construct' && $env{'environment.remote'} eq 'off') { $body_tag_start=&Apache::loncommon::bodytag(); $body_tag_start.=&Apache::lonxml::message_location(); } elsif (!defined($found{'body'})) { $body_tag_start=''."\n"; } if ($target eq 'web' && $env{'request.state'} ne 'construct') { my ($symb,undef,undef,undef,$publicuser)= &Apache::lonxml::whichuser(); if ($symb eq '' && !$publicuser) { my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference"); $help=&mt("Browsing resource, all submissions are temporary.")."
"; $body_tag_start.=$help; } } $body_tag_start.=&Apache::lonxml::message_location(); } my $form_tag_start; if (!defined($found{'form'})) { $form_tag_start='
'; } return ($result,$head_tag_start,$body_tag_start,$form_tag_start); } #use Time::HiRes(); sub get_resource_name { my ($parstack,$safeeval)=@_; if (defined($Apache::lonhomework::name)) { return $Apache::lonhomework::name; } my ($symb)=&Apache::lonxml::whichuser(); my $name=&Apache::lonnet::gettitle($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-; } $Apache::lonhomework::name=$name; return $name; } sub setup_rndseed { my ($safeeval)=@_; my $rndseed; my ($symb)=&Apache::lonxml::whichuser(); if ($env{'request.state'} eq "construct" || $symb eq '' || $Apache::lonhomework::history{'resource.CODE'}) { $rndseed=$env{'form.rndseed'}; if (!$rndseed) { $rndseed=$Apache::lonhomework::history{'rndseed'}; if (!$rndseed) { $rndseed=time; } $env{'form.rndseed'}=$rndseed; } if ($env{'form.resetdata'} eq &mt('New Problem Variation') || $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'}); } if (defined($rndseed) && $rndseed ne int($rndseed)) { $rndseed=join(',',&Math::Random::random_seed_from_phrase($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); } } return $rndseed; } sub remember_problem_state { return ' '; } sub problem_edit_header { return ''. &Apache::structuretags::remember_problem_state().'
'. &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::lonxml::htmlareafields). "\n
\n".&Apache::loncommon::endbodytag()."\n"; } sub option { my ($value,$name) = @_; my $result ="