# The LearningOnline Network with CAPA # definition of tags that give a structure to a document # # $Id: structuretags.pm,v 1.404 2007/10/16 23:20:25 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 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','translated','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,$style)=@_; if ($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 ''; } sub end_web { return ''; } sub start_tex { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; if ($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 $result;; } sub end_tex { return ''; } sub homework_js { return &Apache::loncommon::resize_textarea_js(). <<'JS'; JS } sub page_start { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name, $extra_head)=@_; my %found; foreach my $taginside (@$tagstack) { foreach my $taglookedfor ('html','body','form') { if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;} } } if ($target eq 'tex') { return &Apache::londefdef::start_html($target,$token,$tagstack, $parstack,$parser,$safeeval); } $extra_head .= &homework_js(); my %body_args; if (defined($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') { $extra_head.=&Apache::edit::js_change_detection(). "\n"; } } if (defined($found{'body'})) { $body_args{'skip_phases'}{'body'}=1; } elsif (!defined($found{'body'}) && $env{'request.state'} eq 'construct') { if ($target eq 'web' || $target eq 'edit') { if ($env{'environment.remote'} ne 'off') { $body_args{'only_body'} = 1; } } } elsif (!defined($found{'body'})) { my %add_entries; my $background=&Apache::lonxml::get_param('background',$parstack, $safeeval); if ($background ne '' ) { $add_entries{'background'} = $background; } 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'})) { $form_tag_start='
'."\n"; } } return ($page_start,$form_tag_start); } #use Time::HiRes(); sub get_resource_name { my ($parstack,$safeeval)=@_; my $name; if (defined($Apache::lonhomework::name)) { $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; } return $name; } sub setup_rndseed { my ($safeeval)=@_; my $rndseed; my ($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; } 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'}); } if (defined($rndseed) && $rndseed ne int($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); } } 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::lonhtmlcommon::get_htmlareafields()). "\n
\n".&Apache::loncommon::end_page(); } sub option { my ($value,$name) = @_; my $result ="