# The LearningOnline Network
# Syllabus
#
# $Id: lonsyllabus.pm,v 1.84 2009/03/27 15:46:38 bisitz 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::lonsyllabus;
use strict;
use Apache::lontemplate;
use Apache::Constants qw(:common);
use Apache::loncommon;
use Apache::lonnet;
use Apache::lontexconvert;
use Apache::lonfeedback;
use Apache::lonannounce;
use Apache::lonlocal;
use Apache::lonhtmlcommon;
use Apache::lonspeller();
use HTML::Entities();
sub handler {
my $r = shift;
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
return OK if $r->header_only;
my $target=$env{'form.grade_target'};
# --------------------------------------------------- Get course info from URL
my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
# ------------------------------------------------------------ Get query string
&Apache::loncommon::get_unprocessed_cgi
($ENV{'QUERY_STRING'},['forcestudent','register','forceedit','wrapperdisplay']);
# ----------------------------------------------------- Is this even a course?
my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
if ($homeserver eq 'no_host') {
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
&Apache::loncommon::simple_error_page($r,'No syllabus available',
'No syllabus available');
return OK;
}
# ------------------------------------- There is such a course, get environment
my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
# ------------------------------------------------------------ Print the screen
if ($target eq 'tex') {
$r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
}
# -------------------------------------------------- Let's see who handles this
my $externalsyllabus=$courseenv{'externalsyllabus'};
if ($externalsyllabus=~/\w/) {
if ($env{'form.wrapperdisplay'} eq 'menu') {
$r->print(&Apache::lonwrapper::simple_menu());
} else {
$r->print(&Apache::lonwrapper::wrapper("/public/$cdom/$cnum/syllabus?wrapperdisplay=menu",
$externalsyllabus));
}
return OK;
}
# ------------------------------ The buck stops here: internal syllabus display
# --------------------------------------------------------- The syllabus fields
my %syllabusfields=&Apache::lonlocal::texthash(
'aaa_instructorinfo' => 'Instructor Information',
'bbb_description' => 'Course Description',
'ccc_prereq' => 'Prerequisites',
'cdc_classhours' => 'Class Hours',
'ddd_officehours' => 'Office Hours',
'eee_helproom' => 'Helproom Hours',
'efe_projectinfo' => 'Project Information',
'fff_examinfo' => 'Exam Information',
'fgf_deadlines' => 'Deadlines',
'ggg_grading' => 'Grading Information',
'hhh_readings' => 'Readings',
'iii_coursepack' => 'Coursepack',
'jjj_weblinks' => 'Web Links',
'kkk_textbook' => 'Textbook',
'lll_includeurl' => 'URLs To Include in Syllabus');
# --------------------------------------------------------------- Force Student
my $forcestudent='';
if ($env{'form.forcestudent'}) { $forcestudent='student'; };
my $forceedit='';
if ($env{'form.forceedit'}) { $forceedit='edit'; }
# ----------------------------------------------------------------- Make header
if ($target ne 'tex') {
my $rss_link = &Apache::lonrss::rss_link($cnum,$cdom);
my $js;
if ($env{'form.backto'} eq 'coursecatalog') {
$js .= <<"ENDSCRIPT";
ENDSCRIPT
}
my $start_page =
&Apache::loncommon::start_page("Syllabus", $rss_link.$js,
{'function' => $forcestudent,
'domain' => $cdom,
'force_register' =>
$env{'form.register'},});
$r->print($start_page);
if ($env{'form.backto'} eq 'coursecatalog') {
&Apache::lonhtmlcommon::clear_breadcrumbs();
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"javascript:ToCatalog()",
text=>"Course Catalog"});
if ($env{'form.coursenum'} ne '') {
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"javascript:ToCatalog('details')",
text=>"Course details"});
}
&Apache::lonhtmlcommon::add_breadcrumb
({href=>$r->uri,
text=>"Course syllabus"});
$r->print(&Apache::lonhtmlcommon::breadcrumbs());
}
}
# ---------------------------------------------------------- Load syllabus info
my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
my $allowed=0;
my $privileged=0;
# This handler might be called anonymously ...
# ----------------------------------------------------- Only if not public call
if ($env{'user.environment'}) {
# does this user have privileges to post, etc?
if ($env{'request.course.id'}
&& $cdom eq $env{'course.'.$env{'request.course.id'}.'.domain'}
&& $cnum eq $env{'course.'.$env{'request.course.id'}.'.num'}) {
$allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
$privileged=$allowed;
if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
$forcestudent='student';
}
if ($forcestudent or $target eq 'tex') { $allowed=0; }
}
if (($allowed) && ($env{'form.storesyl'})) {
foreach my $syl_field (keys(%syllabusfields)) {
my $field=$env{'form.'.$syl_field};
chomp($field);
$field=~s/\s+$//s;
$field=~s/^\s+//s;
$field=~s/\
$//s;
$field=&Apache::lonfeedback::clear_out_html($field,1);
$syllabus{$syl_field}=$field;
if ($syl_field eq 'lll_includeurl') { # clean up included URLs
my $field='';
foreach my $value (split(/\n/,$syllabus{$syl_field})) {
my $url=$value;
# get rid of leading and trailing spaces
$url=~s/^\s+//;
$url=~s/\s+$//;
if ($url=~m|^https?\://([^/]+)/(.+)$|) {
my $host = $1;
my $remainder=$2;
# remove the hostname from internal URLs
my $hostname = &Apache::lonnet::hostname($host);
my %all_hostnames = &Apache::lonnet::all_hostnames();
foreach my $possible_host (keys(%all_hostnames)) {
if ($possible_host =~ /\Q$hostname\E/i) {
$url=$remainder;
}
}
}
# norm internal URLs
unless ($url=~/^https?\:/) {
$url=&Apache::lonnet::clutter($url);
}
# re-assemble field
if ($url) {
$field.=$url."\n";
}
}
$syllabus{$syl_field}=$field;
}
}
$syllabus{'uploaded.domain'}=$env{'user.domain'};
$syllabus{'uploaded.name'}=$env{'user.name'};
$syllabus{'uploaded.lastmodified'}=time;
&Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
}
}
#-Pritn Help Text
if ($target ne 'tex') {
if($allowed){
$r->print(&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')));
}
}
#--------Functions
if ($target ne 'tex') {
if($allowed || $privileged){
$r->print(&Apache::lontemplate::start_functionslist());
if($allowed){
$r->print(&Apache::lontemplate::item_functionslist(
''.&mt('Show Public View').''
.&Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView')));
}elsif($privileged){
$r->print(&Apache::lontemplate::item_functionslist(
''.&mt('Edit').''));
}
$r->print(&Apache::lontemplate::end_functionslist());
}
}
#----------------------------Print Headtitle
if($target ne 'tex'){
$r->print('
'.&mt('Last updated').': | '. $lastmod.' | '. ($who ? &mt('by').' '.$who : '' ). ' |
'.&mt('This syllabus can be publicly viewed at').' '.$protocol.'://'.&Apache::lonnet::hostname($homeserver).$r->uri.''.&Apache::loncommon::help_open_topic('Syllabus_ExtLink').'
'.''.&mt('You can specify an external URL as Syllabus in the [_1].',''.&mt('Course Parameters').'').'
'); } # -------------------------------------------------------------- Announcements? my $day = &Apache::lonannounce::showday(time,2, &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)); if ($target ne 'tex') { if($allowed){ &Apache::lontemplate::print_start_template($r,'RSS Feeds and Blogs','LC_ContentBoxSpecial'); $r->print(&Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit)); &Apache::lontemplate::print_end_template($r); } elsif(&Apache::lonrss::advertisefeeds($cnum,$cdom) ne ''){ &Apache::lontemplate::print_start_template($r,'RSS Feeds and Blogs','LC_ContentBoxSpecial'); $r->print(&Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit)); &Apache::lontemplate::print_end_template($r); } } else { $r->print(&Apache::lonxml::xmlparse($r,'tex',$day)); } # ---------------------------------------------------------------- Get syllabus if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) { if ($allowed) { $r->print(''. &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids)); } # if ($target ne 'tex') {$r->print('');} else {$r->print('\\\\');} } else { if ($target ne 'tex') {$r->print('');} else {$r->print('\par ');} $r->print(&mt('No syllabus information provided.')); if ($target ne 'tex') {$r->print('
');} } if ($target ne 'tex') { if ($env{'form.backto'} eq 'coursecatalog') { $r->print(''); } $r->print(&Apache::loncommon::end_page()); } else { $r->print('\end{document}'); } return OK; } 1; __END__