# The LearningOnline Network
# Syllabus
#
# $Id: lonsyllabus.pm,v 1.89 2009/05/11 13:34:10 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";
<script type="text/javascript">
function ToCatalog(caller) {
numidx = getIndexByName('coursenum');
if (numidx > -1) {
if (caller != 'details') {
document.backtocat.elements[numidx].value = '';
}
}
document.backtocat.submit();
}
function getIndexByName(item) {
for (var i=0;i<document.backtocat.elements.length;i++) {
if (document.backtocat.elements[i].name == item) {
return i;
}
}
return -1;
}
</script>
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;
$field=~s/\<br\s*\/*\>$//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,$cnum);
}
}
#---------------------Print External URL Syllabus Info
if( ($allowed) && ($target ne 'tex') ) {
my $protocol = $Apache::lonnet::protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');
$r->print('<p class="LC_info">'
.&mt('This syllabus can be publicly viewed at [_1]'
,'<tt>'.$protocol.'://'.&Apache::lonnet::hostname($homeserver).$r->uri.'</tt>')
.' '.&Apache::loncommon::help_open_topic('Syllabus_ExtLink')
.'</p>'
.'<p class="LC_info">'
.&mt('Instead of using this template you can specify an external URL as Syllabus in the [_1]Course Parameters[_2].'
,'<a href="/adm/parmset?action=crsenv">','</a>')
.'</p>'
);
}
#-Print 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')));
}
}
#----------Print last update
my $lastmod=$syllabus{'uploaded.lastmodified'};
$lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
my $who = &Apache::loncommon::aboutmewrapper(
&Apache::loncommon::plainname($syllabus{'uploaded.name'},
$syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
$syllabus{'uploaded.domain'});
if ($target ne 'tex') {
$r->print('<div class="LC_info">'.&mt('Last updated').': '.
$lastmod . ' '.
($who ? &mt('by').' '.$who
: '' ) .
'</div>' );
} else {
$r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.
($who? &mt('by').'\\\\ '.
&Apache::loncommon::plainname($syllabus{'uploaded.name'},$syllabus{'uploaded.domain'})
:'')
.'\\\\');
}
#--------Functions
if ($target ne 'tex') {
if( $allowed || $privileged) {
$r->print(&Apache::lontemplate::start_functionslist());
if ($allowed) {
$r->print(&Apache::lontemplate::item_functionslist(
'<a href="'.$r->uri.'?forcestudent=1">'.&mt('Show Public View').'</a>'
.&Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView')));
} elsif ($privileged) {
$r->print(&Apache::lontemplate::item_functionslist(
'<a href="'.$r->uri.'?forceedit=1">'.&mt('Edit').'</a>'));
}
$r->print(&Apache::lontemplate::end_functionslist());
}
}
#----------------------------Print Headtitle
if ($target ne 'tex') {
$r->print('<h1>'.$courseenv{'description'}.'</h1>');
$r->print('<h3>'. &Apache::lonnet::domain($cdom,'description').'</h3>');
} else {
$r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
&Apache::lonnet::domain($cdom,'description').'}\\\\');
}
# -------------------------------------------------------- Get course personnel
my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
if ($target ne 'tex') {
$r->print(&Apache::lonhtmlcommon::start_pick_box());
} else {
$r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
}
my @personnel=sort(keys(%coursepersonnel));
my $lastpers=$personnel[$#personnel];
foreach my $element (@personnel) {
if ($target ne 'tex') {
$r->print(&Apache::lonhtmlcommon::row_title($element));
} else {
$r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
}
foreach (split(/\,/,$coursepersonnel{$element})) {
my ($puname,$pudom)=split(/\:/,$_);
if ($target ne 'tex') {
my $courseperson = &Apache::loncommon::plainname($puname,$pudom);
if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
$r->print(' '.$courseperson);
} else {
$r->print(' '.&Apache::loncommon::aboutmewrapper($courseperson,
$puname,$pudom));
}
} else {
$r->print(' '.&Apache::loncommon::plainname($puname,
$pudom).' ');
}
}
if ($target ne 'tex') {
my $lastclose=$element eq $lastpers?1:0;
$r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
} else {
$r->print('\\\\ \hline');
}
}
if ($target ne 'tex') {
$r->print(&Apache::lonhtmlcommon::end_pick_box());
} else {
$r->print('\end{tabular}\\\\');
}
# -------------------------------------------------------------- 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));
my $editurl= &Apache::lonnet::absolute_url().'/adm/'.$cdom.'/'.$cnum.'/_rss.html';
$r->print( '<a href="'.$editurl.'">'.&mt('New RSS Feed or Blog').'</a>');
&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('<form method="post">'.
'<input type="hidden" name="forceedit" value="edit" />');
}
my @htmlids=();
foreach my $field (sort(keys(%syllabusfields))) {
if (($syllabus{$field}=~/\w/) || ($allowed)) {
my $message=$syllabus{$field};
if ($field eq 'lll_includeurl') { # this is the "included" field
my $urls=$message;
$message='';
foreach my $filelink (split(/\n/,$urls)) {
my $output='';
# embed style?
my ($curfext)=($filelink=~/\.([^\.]+)$/);
my $embstyle=&Apache::loncommon::fileembstyle($curfext);
if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {# make ssi call and remove everything but the body contents
$output=&Apache::lonnet::ssi_body($filelink);
} elsif ($embstyle eq 'img') {# embed as an image
$output='<img src="'.$filelink.'" />';
}
if ($output ne '') {
if ($target ne 'tex') {
$message.='<p>'.$output.'</p>';
} else {
$message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
}
}
}
if ($allowed) {
$r->print('<h3>'.$syllabusfields{$field}.
&Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>');
} else {
$r->print($message);
}
} else {
&Apache::lonfeedback::newline_to_br(\$message);
$message =~s|(https?\://[^\s]+)|<a href="$1"><tt>$1</tt></a>|g;
if ($allowed) {
$message=&Apache::lonspeller::markeduptext($message);
}
$message=&Apache::lontexconvert::msgtexconverted($message);
if ($target ne 'tex') {
if ($allowed) {
$r->print('<p>');
}
&Apache::lontemplate::print_template($r, $syllabusfields{$field}, $message,$allowed,'LC_ContentBoxSpecial');
} else {
$r->print('\\\\\textbf{'.$syllabusfields{$field}.'}\\\\'.
&Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
}
push(@htmlids,$field);
}
if ($allowed) {
if ($target ne 'tex') {
$r->print('</p>');
&Apache::lontemplate::print_editbox_template($r, $syllabus{$field}, $field);
}
}
}
}
if ($allowed) {
$r->print('</form>'.
&Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
}
# if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
} else {
if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
$r->print(&mt('No syllabus information provided.'));
if ($target ne 'tex') {$r->print('</p>');}
}
if ($target ne 'tex') {
if ($env{'form.backto'} eq 'coursecatalog') {
$r->print('<form name="backtocat" method="post" action="/adm/coursecatalog">'.
&Apache::lonhtmlcommon::echo_form_input(['backto','courseid']).
'</form>');
}
$r->print(&Apache::loncommon::end_page());
} else {
$r->print('\end{document}');
}
return OK;
}
1;
__END__
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