# The LearningOnline Network with CAPA
# Handler for displaying the course catalog interface
#
# $Id: coursecatalog.pm,v 1.105 2021/06/15 20:52:26 raeburn 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::coursecatalog;
use strict;
use lib qw(/home/httpd/lib/perl);
use Apache::Constants qw(:common);
use Apache::loncommon;
use Apache::lonhtmlcommon;
use Apache::lonnet;
use Apache::lonlocal;
use Apache::courseclassifier;
use Apache::lonacc;
use LONCAPA;
use LONCAPA::lonauthcgi;
sub handler {
my ($r) = @_;
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
if ($r->header_only) {
return OK;
}
my $handle = &Apache::lonnet::check_for_valid_session($r);
my $lonidsdir=$r->dir_config('lonIDsDir');
if ($handle ne '') {
&Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
}
&Apache::lonacc::get_posted_cgi($r);
&Apache::lonlocal::get_language_handle($r);
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['sortby','showdom']);
my $serverdefdom = &Apache::lonnet::default_login_domain();
my $codedom = $serverdefdom;
my $hostname = $r->hostname();
if (($env{'user.domain'} ne '') && ($env{'user.domain'} ne 'public')) {
$codedom = $env{'user.domain'};
if ($env{'request.role.domain'} ne '') {
$codedom = $env{'request.role.domain'};
}
}
my $formname = 'coursecatalog';
if ($env{'form.showdom'} ne '') {
$env{'form.showdom'} = &LONCAPA::clean_domain($env{'form.showdom'});
if (&Apache::lonnet::domain($env{'form.showdom'}) ne '') {
$codedom = $env{'form.showdom'};
} else {
$env{'form.showdom'} = '';
}
}
my $domdesc = &Apache::lonnet::domain($serverdefdom,'description');
&Apache::lonhtmlcommon::clear_breadcrumbs();
unless (($serverdefdom eq $codedom) ||
(&Apache::lonnet::will_trust('catalog',$serverdefdom,$codedom))) {
my $serverdomdesc = &Apache::lonnet::domain($serverdefdom,'description');
$r->print(&Apache::loncommon::start_page('Course/Community Catalog'));
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"Course/Community Catalog"});
$r->print(&Apache::lonhtmlcommon::breadcrumbs('Course/Community Catalog'));
$r->print('<div>'.&mt('Access to catalog LON-CAPA courses/communities unavailable for: "[_1]" on servers run by: "[_2]".',
$domdesc,$serverdomdesc).'</div>');
$r->print(&Apache::loncommon::end_page());
return OK;
}
my $crscats = &Apache::lonnet::get_dom_cats($codedom);
my %domdefaults = &Apache::lonnet::get_domain_defaults($codedom);
my $knownuser = &user_is_known();
my $canviewall = &canview_all($knownuser,$codedom);
my ($cathash,$cattype);
if (ref($crscats) eq 'HASH') {
%{$cathash} = %{$crscats};
} else {
$cathash = {};
}
if ($knownuser || $canviewall) {
$cattype = $domdefaults{'catauth'};
} else {
$cattype = $domdefaults{'catunauth'};
}
if ($cattype eq '') {
$cattype = 'std';
}
if ($cattype eq 'none') {
$r->print(&Apache::loncommon::start_page('Course/Community Catalog'));
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"Course/Community Catalog"});
$r->print(&Apache::lonhtmlcommon::breadcrumbs('Course/Community Catalog'));
if ($knownuser || $canviewall) {
$r->print('<div>'.&mt('No catalog of LON-CAPA courses/communities is provided for: [_1]',$domdesc).'</div>');
} else {
if ($domdefaults{'catauth'} eq 'none') {
$r->print('<div>'.&mt('No catalog of LON-CAPA courses/communities is provided for: [_1]',$domdesc).'</div>');
} else {
$r->print('<div>'.&mt('The catalog of LON-CAPA courses/communities provided for: "[_1]" is only available to users who are logged in.',$domdesc).'</div>');
}
}
$r->print(&Apache::loncommon::end_page());
return OK;
}
my $cnum;
if ($cattype eq 'codesrch') {
my ($uniquecode,$codemsg,$brtext);
if ($env{'form.uniquecode'}) {
$uniquecode = $env{'form.uniquecode'};
$uniquecode =~ s/^\s+|\s+$//g;
}
my $js = '<script type="text/javascript">'."\n".
'// <![CDATA['."\n".
&courselink_javascript($hostname)."\n".
'// ]]>'."\n".
'</script>'."\n";
$r->print(&Apache::loncommon::start_page('Search for a Course/Community',$js));
if ($uniquecode =~ /^\w{6}$/) {
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"Course/Community Catalog"});
$brtext = 'Search Result';
} else {
$brtext = 'Course/Community Catalog';
}
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"$brtext"});
$r->print(&Apache::lonhtmlcommon::breadcrumbs('Course/Community Catalog'));
$r->print(&coursesearch($codedom,$domdesc,$uniquecode));
if ($uniquecode =~ /^\w{6}$/) {
$r->print('<hr />');
my $confname = $codedom.'-domainconfig';
my %codes = &Apache::lonnet::get('uniquecodes',[$uniquecode],$codedom,$confname);
if ($codes{$uniquecode}) {
$cnum = $codes{$uniquecode};
my %courses = &Apache::lonnet::courseiddump($codedom,'.',1,'.','.',
$cnum,undef,undef,'.',1);
if (keys(%courses)) {
$env{'form.coursenum'} = $cnum;
my %courseinfo = &build_courseinfo_hash(\%courses,$knownuser,$codedom,$canviewall);
undef($env{'form.coursenum'});
if (ref($courseinfo{$codedom.'_'.$cnum}) eq 'HASH') {
$r->print(&Apache::lonhtmlcommon::start_pick_box());
my @cols = ('title','ownerlastnames','seclist','access');
my %lt = &Apache::lonlocal::texthash(
title => 'Title',
ownerlastnames => 'Owner & Co-owner(s)',
seclist => 'Sections',
access => 'Default Access Dates for Students',
);
my @shown;
foreach my $item (@cols) {
if ($courseinfo{$codedom.'_'.$cnum}{$item}) {
push(@shown,$item);
}
}
my $num = 0;
foreach my $item (@shown) {
$num ++;
$r->print(&Apache::lonhtmlcommon::row_title($lt{$item}).
$courseinfo{$codedom.'_'.$cnum}{$item});
if ($item eq 'title') {
if ($courseinfo{$codedom.'_'.$cnum}{'showsyllabus'}) {
my $usehttp = 0;
if (($ENV{'SERVER_PORT'} == 443) && ($courseinfo{$codedom.'_'.$cnum}{'extsyllplain'})) {
unless ((&Apache::lonnet::uses_sts()) ||
(&Apache::lonnet::waf_allssl($hostname))) {
$usehttp = 1;
}
}
$r->print(' <font size="-2">'.
'<a href="javascript:ToSyllabus('."'$codedom','$cnum','$usehttp'".')">'.
&mt('Syllabus').'</a></font>');
}
}
my $arg = ( $num == scalar(@shown) ? 1 : '' );
$r->print(&Apache::lonhtmlcommon::row_closure($arg));
}
$r->print(&Apache::lonhtmlcommon::end_pick_box());
my $selfenroll = &selfenroll_status($courseinfo{$codedom.'_'.$cnum},$codedom.'_'.$cnum);
if ($selfenroll) {
$r->print('<br />'.$selfenroll);
}
$r->print('<form name="linklaunch" method="post" action="">'."\n".
'<input type="hidden" name="backto" value="coursecatalog" />'."\n".
'<input type="hidden" name="courseid" value="" />'."\n".
'</form>'."\n");
} else {
$codemsg = &mt('Code matched, but course ID to which this mapped is invalid.');
}
} else {
$codemsg = &mt('Code matched, but course ID to which this mapped is invalid.');
}
} else {
$codemsg = &mt('No match');
}
}
$r->print('<br />'.&Apache::loncommon::end_page());
return OK;
} else {
if ($env{'form.coursenum'} ne '') {
if ($env{'form.coursenum'} =~ /^$LONCAPA::match_courseid$/) {
$cnum = $env{'form.coursenum'};
} else {
delete($env{'form.coursenum'});
}
}
}
my (@cats,@trails,%allitems,%idx,@jsarray,%subcathash,$subcats,%maxd,
$toplevelstr,$maxdepthstr);
if ($env{'form.withsubcats'}) {
$subcats = \%subcathash;
}
&Apache::loncommon::extract_categories($cathash,\@cats,\@trails,\%allitems,
\%idx,\@jsarray,$subcats,\%maxd);
if (ref($cats[0]) eq 'ARRAY') {
foreach my $item (@{$cats[0]}) {
$toplevelstr .= "'".&js_escape($item)."::0',";
$maxdepthstr .= "'$maxd{$item}',";
}
$toplevelstr =~ s/,$//;
$maxdepthstr =~ s/,$//;
}
&validate_input($codedom,\@cats,\%maxd,$cathash);
my ($numtitles,@codetitles);
if (($env{'form.coursenum'} ne '') && ($knownuser)) {
&course_details($r,$codedom,$formname,$domdesc,$hostname,\@trails,
\%allitems,\@codetitles);
} else {
my ($catlinks,$has_subcats,$selitem) = &category_breadcrumbs($codedom,@cats);
my $wasacctext = &get_wasactive_text();
my $catjs = <<"ENDSCRIPT";
function setCatDepth(depth) {
var depth = parseInt(depth);
if (depth !== NaN) {
if (depth > 0) {
var possmaxd = 0;
var toplevel = new Array($toplevelstr);
var maxdepths = new Array($maxdepthstr);
if (toplevel.length) {
for (var i=0; i<toplevel.length; i++) {
var item = unescape(toplevel[i]);
if (item == document.coursecats.currcat_0.value) {
possmaxd = maxdepths[i];
break;
}
}
}
if (depth > possmaxd) {
depth = possmaxd;
}
}
document.coursecats.catalog_maxdepth.value = depth;
} else {
document.coursecats.currcat_0.value = '';
document.coursecats.catalog_maxdepth.value = '';
}
document.coursecats.submit();
return;
}
function changeSort(caller) {
document.$formname.sortby.value = caller;
document.$formname.submit();
}
function setCourseId(caller) {
document.$formname.coursenum.value = caller;
document.$formname.submit();
}
ENDSCRIPT
$catjs .= &courselink_javascript($hostname);
if (&user_is_dc($codedom) || $canviewall) {
$catjs .= <<ENDTOGGJS
function toggleStatuses() {
if (document.$formname.showdetails.checked) {
document.getElementById('statuschoice').style.display='block';
document.getElementById('statuscell').style.borderLeft='1px solid';
} else {
document.getElementById('statuschoice').style.display='none';
document.getElementById('statuscell').style.borderLeft='0px';
}
return;
}
function toggleWasActive() {
if (document.getElementById('counts_Previous')) {
if (document.getElementById('counts_Previous').checked) {
document.getElementById('choosewasactive').style.display='block';
document.getElementById('choosewasacctext').innerHTML = '$wasacctext';
} else {
document.getElementById('choosewasactive').style.display='none';
document.getElementById('choosewasacctext').innerHTML = '';
}
}
return;
}
ENDTOGGJS
}
if ($env{'form.currcat_0'} eq 'instcode::0') {
$numtitles = &instcode_course_selector($r,$codedom,$formname,$domdesc,
$catlinks,$catjs,\@codetitles,$cattype,$canviewall);
if ($env{'form.state'} eq 'listing') {
$r->print(&print_course_listing($codedom,$numtitles,undef,undef,undef,
\@codetitles,$canviewall,$hostname));
}
} else {
my (%add_entries);
my ($currdepth,$deeper) = &get_depth_values();
if ($selitem) {
my $alert = &mt('Choose a subcategory to display');
if (!$deeper) {
$alert = &mt('Choose a category to display');
}
&js_escape(\$alert);
$catjs .= <<ENDJS;
function check_selected() {
if (document.coursecats.$selitem.options[document.coursecats.$selitem.selectedIndex].value == "") {
alert('$alert');
return false;
}
}
ENDJS
}
$catjs = '<script type="text/javascript">'."\n".$catjs."\n".'</script>';
&cat_header($r,$codedom,$catjs,\%add_entries,$catlinks,undef,$cattype);
if ($env{'form.currcat_0'} ne '') {
$r->print('<form name="'.$formname.
'" method="post" action="/adm/coursecatalog">'.
&additional_filters($codedom,$has_subcats,$canviewall)."\n");
$r->print('<input type="hidden" name="catalog_maxdepth" value="'.
$deeper.'" />'."\n");
for (my $i=0; $i<$deeper; $i++) {
$r->print('<input type="hidden" name="currcat_'.$i.'" value="'.$env{'form.currcat_'.$i}.'" />'."\n");
}
my $display_button;
if ($env{'form.currcat_0'} eq 'communities::0') {
$display_button = &mt('Display communities');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$display_button = &mt('Display placement tests');
} else {
$display_button = &mt('Display courses');
}
$r->print('<input type="hidden" name="coursenum" value="" />'."\n".
'<input type="hidden" name="sortby" value="" />'."\n".
'<input type="hidden" name="state" value="listing" />'."\n".
'<input type="hidden" name="showdom" value="'.
$env{'form.showdom'}.'" />'.
'<input type="submit" name="catalogfilter" value="'.
$display_button.'" /></form><br /><br />');
}
if ($env{'form.state'} eq 'listing') {
$r->print(&print_course_listing($codedom,undef,\@trails,\%allitems,$subcats,\@codetitles,
$canviewall,$hostname));
}
}
}
$r->print('<br />'.&Apache::loncommon::end_page());
return OK;
}
sub validate_input {
my ($codedom,$cats,$maxd,$crscatsref) = @_;
my $currcat = '';
my $depth = 0;
if ($env{'form.catalog_maxdepth'} ne '') {
$env{'form.catalog_maxdepth'} =~ s{\D}{}g;
}
if ((ref($cats) eq 'ARRAY') && (ref($maxd) eq 'HASH')) {
if (ref($cats->[0]) eq 'ARRAY') {
if (@{$cats->[0]} == 1) {
if ($cats->[0][0] eq 'instcode') {
$currcat = 'instcode::0';
} elsif ($cats->[0][0] eq 'communities') {
$currcat = 'communities::0';
} elsif ($cats->[0][0] eq 'placement') {
$currcat = 'placement::0';
} else {
my $name = $cats->[0][0];
$currcat = &escape($name).'::0';
}
if (exists($maxd->{$cats->[0][0]})) {
if ($env{'form.catalog_maxdepth'} <= $maxd->{$cats->[0][0]}) {
$depth = $env{'form.catalog_maxdepth'};
} else {
$depth = $maxd->{$cats->[0][0]};
}
}
} elsif ((@{$cats->[0]} > 1) && ($env{'form.currcat_0'} ne '')) {
my ($escname) = ($env{'form.currcat_0'} =~ /^([^:]+)\:\:0$/);
if ($escname =~ /^instcode|communities|placement$/) {
$currcat = $env{'form.currcat_0'};
if (exists($maxd->{$escname})) {
if ($env{'form.catalog_maxdepth'} <= $maxd->{$escname}) {
$depth = $env{'form.catalog_maxdepth'};
} else {
$depth = $maxd->{$escname};
}
} else {
$depth = 1;
}
} elsif ($escname ne '') {
my $name = &unescape($escname);
if (grep(/^\Q$name\E$/,@{$cats->[0]})) {
$currcat = $env{'form.currcat_0'};
if (exists($maxd->{$name})) {
if ($env{'form.catalog_maxdepth'} <= $maxd->{$name}) {
$depth = $env{'form.catalog_maxdepth'};
} else {
$depth = $maxd->{$name};
}
}
}
}
}
}
}
$env{'form.currcat_0'} = $currcat;
$env{'form.catalog_maxdepth'} = $depth;
my %possibles = (
backto => 1,
catalogfilter => 1,
catalog_maxdepth => 1,
courseid => 1,
coursenum => 1,
currcat_0 => 1,
numtitles => 1,
Year => 1,
Semester => 1,
Department => 1,
Number => 1,
showdom => 1,
sortby => 1,
showcounts => 1,
showdetails => 1,
showhidden => 1,
showselfenroll => 1,
state => 1,
uniquecode => 1,
wasactive => 1,
wasactiveon_day => 1,
wasactiveon_month => 1,
wasactiveon_year => 1,
withsubcats => 1,
);
my %currcats;
if ($env{'form.catalog_maxdepth'} > 0) {
for (my $i=1; $i<=$env{'form.catalog_maxdepth'}; $i++) {
$currcats{'currcat_'.$i} = 1;
$possibles{'currcat_'.$i} = 1;
}
}
foreach my $key (sort(keys(%env))) {
if ($key =~ /^form\.(.+)$/) {
unless ($possibles{$1}) {
delete($env{$key});
}
}
}
if (exists($env{'form.backto'})) {
unless ($env{'form.backto'} eq 'coursecatalog') {
delete($env{'form.backto'});
}
}
if (exists($env{'form.catalogfilter'})) {
unless (($env{'form.catalogfilter'} eq &mt('Display courses')) ||
($env{'form.catalogfilter'} eq &mt('Display communities')) ||
($env{'form.catalogfilter'} eq &mt('Display placement tests'))) {
delete($env{'form.catalogfilter'});
}
}
if (exists($env{'form.courseid'})) {
if ($env{'form.courseid'} ne '') {
unless ($env{'form.courseid'} =~ /^\Q$codedom\E_$LONCAPA::match_courseid$/) {
$env{'form.courseid'} = '';
}
}
}
if (exists($env{'form.coursenum'})) {
unless ($env{'form.coursenum'} =~ /^$LONCAPA::match_courseid$/) {
$env{'form.coursenum'} = '';
}
}
if (exists($env{'form.currcat_0'})) {
unless ($env{'form.currcat_0'} =~ /^(instcode|communities|placement)\Q::0\E$/) {
if ($env{'form.currcat_0'} =~ /^.+\Q::0\E$/) {
if (ref($crscatsref) eq 'HASH') {
unless (exists($crscatsref->{$env{'form.currcat_0'}})) {
delete($env{'form.currcat_0'});
}
} else {
delete($env{'form.currcat_0'});
}
} else {
delete($env{'form.currcat_0'});
}
}
}
if (exists($env{'form.numtitles'})) {
unless ($env{'form.numtitles'} =~ /^\d+$/) {
delete($env{'form.numtitles'});
}
}
my ($gotcodes,%possvals);
foreach my $item ('Year','Semester','Department','Number') {
if (exists($env{'form.'.$item})) {
unless ($env{'form.'.$item} eq '0') {
unless ($gotcodes) {
$gotcodes = &get_instcode_allowable($codedom,\%possvals);
}
if (ref($possvals{$item}) eq 'HASH') {
unless (exists($possvals{$item}{$env{'form.'.$item}})) {
delete($env{'form.'.$item});
}
} else {
delete($env{'form.'.$item});
}
}
}
}
if (exists($env{'form.showdom'})) {
unless ($env{'form.showdom'} =~ /^$LONCAPA::match_domain$/) {
delete($env{'form.showdom'});
}
}
if (exists($env{'form.sortby'})) {
unless ($env{'form.sortby'} =~ /^(title|code|owner|cats)$/) {
delete($env{'form.sortby'});
}
}
if (exists($env{'form.showcounts'})) {
if (ref($env{'form.showcounts'}) eq 'ARRAY') {
foreach my $item (@{$env{'form.showcounts'}}) {
unless ($item =~ /^(Active|Future|Previous)$/) {
delete($env{'form.showcounts'});
last;
}
}
} else {
unless ($env{'form.showcounts'} =~ /^(Active|Future|Previous)$/) {
delete($env{'form.showcounts'});
}
}
}
foreach my $item ('showhidden','showdetails','showselfenroll','withsubcats') {
if (exists($env{'form.'.$item})) {
unless ($env{'form.'.$item} eq '1') {
delete($env{'form.'.$item});
}
}
}
if (exists($env{'form.state'})) {
unless ($env{'form.state'} eq 'listing') {
delete($env{'form.state'});
}
}
if (exists($env{'form.uniquecode'})) {
unless ($env{'form.uniquecode'} =~ /^\w{6}$/) {
delete($env{'form.uniquecode'});
}
}
if (exists($env{'form.wasactive'})) {
unless (($env{'form.wasactive'} eq 'accessend') || ($env{'form.wasactive'} eq 'enrollend')) {
delete($env{'form.wasactive'});
}
}
if (exists($env{'form.wasactiveon_day'})) {
my $tmpday = $env{'form.wasactiveon_day'};
unless (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
delete($env{'form.wasactiveon_day'});
}
}
if (exists($env{'form.wasactiveon_month'})) {
my $tmpmonth = $env{'form.wasactiveon_month'};
unless (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
delete($env{'form.wasactiveon_month'});
}
}
if (exists($env{'form.wasactiveon_year'})) {
my $tmpyear = $env{'form.wasactiveon_year'};
unless (($tmpyear =~ /^\d+$/) && ($tmpyear >= 1970)) {
delete($env{'form.wasactiveon_year'});
}
}
if (keys(%currcats)) {
foreach my $key (keys(%currcats)) {
if ($env{'form.'.$key} eq '') {
delete($env{'form.'.$key});
} elsif (ref($crscatsref) eq 'HASH') {
unless (exists($crscatsref->{$env{'form.'.$key}})) {
delete($env{'form.'.$key});
}
} else {
delete($env{'form.'.$key});
}
}
}
return;
}
sub get_instcode_allowable {
my ($codedom,$possvalref) = @_;
return 1 unless (ref($possvalref) eq 'HASH');
my $instcats = &Apache::lonnet::get_dom_instcats($codedom);
if (ref($instcats) eq 'HASH') {
if ((ref($instcats->{'codetitles'}) eq 'ARRAY') && (ref($instcats->{'codes'}) eq 'HASH')) {
my %codes = %{$instcats->{'codes'}};
my @codetitles = @{$instcats->{'codetitles'}};
my @standardnames = &Apache::loncommon::get_standard_codeitems();
my %local_to_standard;
for (my $i=0; $i<@codetitles; $i++) {
$local_to_standard{$codetitles[$i]} = $standardnames[$i];
$possvalref->{$standardnames[$i]} = {};
}
foreach my $cid (sort(keys(%codes))) {
if (ref($codes{$cid}) eq 'HASH') {
foreach my $item (keys(%{$codes{$cid}})) {
$possvalref->{$local_to_standard{$item}}{$codes{$cid}{$item}} = 1;
}
}
}
}
}
return 1;
}
sub course_details {
my ($r,$codedom,$formname,$domdesc,$hostname,$trails,$allitems,$codetitles) = @_;
my $output;
my %add_entries = (topmargin => "0",
marginheight => "0",);
my $js = '<script type="text/javascript">'."\n".
&courselink_javascript($hostname).'</script>'."\n";
my $start_page =
&Apache::loncommon::start_page('Course/Community Catalog',$js,
{'add_entries' => \%add_entries, });
$r->print($start_page);
if ($env{'form.numtitles'} > 0) {
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"Course/Community Catalog"});
}
my $brtextone = 'Course listing';
my $brtexttwo = 'Course details';
my $textthree = &mt('Detailed course information:');
my $textfour = &mt('Back to course listing');
if ($env{'form.currcat_0'} eq 'communities::0') {
$brtextone = 'Community listing';
$brtexttwo = 'Community details';
$textthree = &mt('Detailed community information:');
$textfour = &mt('Back to community listing');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$brtextone = 'Placement test listing';
$brtexttwo = 'Placement test details';
$textthree = &mt('Detailed placement test information:');
$textfour = &mt('Back to placement test listing');
}
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"javascript:document.$formname.submit()",
text=>$brtextone},
{text=>$brtexttwo});
$r->print(
&Apache::lonhtmlcommon::breadcrumbs('Course/Community Catalog').
'<h2>'.$textthree.'</h2>'.
&print_course_listing($codedom,undef,$trails,$allitems,undef,$codetitles,undef,$hostname).
'<br />'.
'<form name="'.$formname.'" method="post" action="/adm/coursecatalog">'.
&Apache::lonhtmlcommon::actionbox([
'<a href = "javascript:document.coursecatalog.submit()">'.$textfour.'</a>']).
&Apache::lonhtmlcommon::echo_form_input(['coursenum','catalogfilter',
'showdetails','courseid']).
'</form>');
return;
}
sub coursesearch {
my ($codedom,$domdesc,$uniquecode) = @_;
my %lt = &Apache::lonlocal::texthash (
crlk => 'Course look-up',
code => 'Code',
ifyo => 'Enter the course code (six letters and numbers)',
srch => 'Find course',
);
return <<"END";
<h3>$lt{'crlk'} ($domdesc)</h3>
$lt{'ifyo'}
<form name="searchbycode" method="post" action="">
<span class="LC_nobreak">
<input type="text" value="$uniquecode" size="6" name="uniquecode" />
<br />
<input type="submit" value="$lt{'srch'}" name="srch" /></span>
</form>
END
}
sub courselink_javascript {
my ($hostname) = @_;
return <<"END";
function ToSyllabus(cdom,cnum,usehttp) {
if (cdom == '' || cdom == null) {
return;
}
if (cnum == '' || cnum == null) {
return;
}
document.linklaunch.action = "/public/"+cdom+"/"+cnum+"/syllabus";
if (usehttp == 1) {
var hostname = '$hostname';
if (hostname != '') {
document.linklaunch.action = 'http://'+hostname+document.linklaunch.action;
}
document.linklaunch.action += '?usehttp=1';
}
document.linklaunch.submit();
}
function ToSelfenroll(courseid) {
if (courseid == '') {
return;
}
document.linklaunch.action = "/adm/selfenroll";
document.linklaunch.courseid.value = courseid;
document.linklaunch.submit();
}
END
}
sub instcode_course_selector {
my ($r,$codedom,$formname,$domdesc,$catlinks,$catjs,$codetitles,$cattype,$canviewall) = @_;
my %cat_titles = ();
my %cat_order = ();
my %cat_items = ();
my %add_entries = (topmargin => "0",
marginheight => "0",);
my ($jscript,$totcodes,$numtitles,$lasttitle) =
&Apache::courseclassifier::instcode_selectors_data($codedom,$formname,
\%cat_items,$codetitles,\%cat_titles,\%cat_order);
my $js = '<script type="text/javascript">'."\n".
'// <![CDATA['."\n".
"$jscript\n$catjs\n".
'// ]]>'."\n".
'</script>';
if ($totcodes) {
if (($env{'form.state'} eq 'listing') && ($numtitles > 0)) {
$add_entries{'onload'} = 'setElements();';
}
if (&user_is_dc($codedom) || $canviewall) {
$add_entries{'onload'} .= ' toggleStatuses();toggleWasActive();'
}
&cat_header($r,$codedom,$js,\%add_entries,$catlinks,$numtitles,$cattype);
my $cat_maxdepth = $env{'form.catalog_maxdepth'};
$r->print('<form name="'.$formname.'" method="post" action="/adm/coursecatalog">'.
'<input type="hidden" name="catalog_maxdepth" value="'.$cat_maxdepth.'" />'."\n".
'<input type="hidden" name="showdom" value="'.$env{'form.showdom'}.'" />'."\n".
'<input type="hidden" name="currcat_0" value="instcode::0" />'.
&additional_filters($codedom,undef,$canviewall));
if ($numtitles > 0) {
$r->print('<b>'.&mt('Choose which course(s) to list.').'</b><br />'.
&Apache::courseclassifier::build_instcode_selectors($numtitles,
$lasttitle,\%cat_items,$codetitles,\%cat_titles,\%cat_order));
}
$r->print('<input type="hidden" name="coursenum" value="" />'."\n".
'<input type="hidden" name="sortby" value="" />'."\n".
'<input type="hidden" name="state" value="listing" />'."\n".
'<input type="submit" name="catalogfilter" value="'.
&mt('Display courses').'" />'.
'<input type="hidden" name="numtitles" value="'.$numtitles.
'" /></form><br /><br />');
} else {
$js = '<script type="text/javascript">'."\n".
'// <![CDATA['."\n".
"$catjs\n".
'// ]]>'."\n".
'</script>';
&cat_header($r,$codedom,$js,\%add_entries,$catlinks,$numtitles,$cattype);
my $cat_maxdepth = $env{'form.catalog_maxdepth'};
$r->print('<form name="'.$formname.'" method="post" action="/adm/coursecatalog">'.
'<input type="hidden" name="catalog_maxdepth" value="'.$cat_maxdepth.'" />'.
'<input type="hidden" name="showdom" value="'.$env{'form.showdom'}.'" />'.
'<input type="hidden" name="currcat_0" value="instcode::0" />');
$r->print('<br />'.&mt('No official courses to display for [_1].',$domdesc).'</form>');
}
return $numtitles;
}
sub cat_header {
my ($r,$codedom,$js,$add_entries,$catlinks,$numtitles,$cattype) = @_;
my $start_page =
&Apache::loncommon::start_page('Course/Community Catalog',$js,
{ 'add_entries' => $add_entries, });
$r->print($start_page);
my $brtext = 'Course listing';
if ($env{'form.currcat_0'} eq 'communities::0') {
$brtext = 'Community listing';
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$brtext = 'Placement test listing';
}
if ($env{'form.state'} eq 'listing') {
if ($numtitles > 0) {
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"Course/Community Catalog"},
{text=>$brtext});
} else {
&Apache::lonhtmlcommon::add_breadcrumb
({text=>$brtext});
}
} else {
&Apache::lonhtmlcommon::add_breadcrumb
({href=>"/adm/coursecatalog",
text=>"Course/Community Catalog"});
}
$r->print(&Apache::lonhtmlcommon::breadcrumbs('Course/Community Catalog'));
if ($cattype eq 'std') {
my $onchange = 'this.form.submit()';
$r->print('<form name="coursecatdom" method="post" action="/adm/coursecatalog">'.
'<table border="0"><tr><td><b>'.&mt('Domain:').'</b></td><td>'.
&Apache::loncommon::select_dom_form($codedom,'showdom','',1,$onchange));
if (!$onchange) {
$r->print(' <input type="submit" name="godom" value="'.&mt('Change').'" />');
}
$r->print('</td></tr></table></form>');
}
$r->print('<form name="coursecats" method="post" action="/adm/coursecatalog"'.
' onsubmit="return check_selected();">'.
'<table border="0"><tr>'.$catlinks.'</tr></table></form>');
return;
}
sub category_breadcrumbs {
my ($dom,@cats) = @_;
my $crumbsymbol = ' ▶ ';
my ($currdepth,$deeper) = &get_depth_values();
my $currcat_str =
'<input type="hidden" name="catalog_maxdepth" value="'.$deeper.'" />'.
'<input type="hidden" name="showdom" value="'.$dom.'" />';
my $catlinks = '<td valign="top"><b>'.&mt('Catalog:').'</b></td><td><table><tr><td>';
my $has_subcats;
my $selitem;
if (ref($cats[0]) eq 'ARRAY') {
if (@{$cats[0]} == 0) {
$catlinks .= &mt('No categories defined in this domain');
} elsif (@{$cats[0]} == 1) {
if ($cats[0][0] eq 'instcode') {
$catlinks .= &mt('Official courses (with institutional codes)');
$env{'form.currcat_0'} = 'instcode::0';
} elsif ($cats[0][0] eq 'communities') {
$catlinks .= &mt('Communities');
$env{'form.currcat_0'} = 'communities::0';
} elsif ($cats[0][0] eq 'placement') {
$catlinks .= &mt('Placement Tests');
$env{'form.currcat_0'} = 'placement::0';
} else {
my $name = $cats[0][0];
my $item = &escape($name).'::0';
$catlinks .= $name;
$env{'form.currcat_0'} = $item;
}
$currcat_str .= '<input type="hidden" name="currcat_0" value="'.$env{'form.currcat_0'}.'" />';
} else {
$catlinks .= &main_category_selector(@cats);
if (($env{'form.currcat_0'} ne '') &&
($env{'form.currcat_0'} ne 'instcode::0')) {
$catlinks .= $crumbsymbol;
}
}
} else {
$catlinks .= &mt('Official courses (with institutional codes)');
$env{'form.currcat_0'} = 'instcode::0';
$currcat_str .= '<input type="hidden" name="currcat_0" value="'.$env{'form.currcat_0'}.'" />';
}
if ($deeper) {
for (my $i=1; $i<=$deeper; $i++) {
my $shallower = $i-1;
next if ($shallower == 0);
my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$env{'form.currcat_'.$shallower});
if ($cat ne '') {
$catlinks .= '<td valign="top">'.
'<select name="currcat_'.$shallower.'" onchange="'.
'setCatDepth('."'$shallower'".');this.form.submit();">';
if (ref($cats[$shallower]{$container}) eq 'ARRAY') {
$catlinks .= '<option value="">'.&mt('De-select').'</option>';
for (my $j=0; $j<@{$cats[$shallower]{$container}}; $j++) {
my $name = $cats[$shallower]{$container}[$j];
my $item = &escape($name).':'.&escape($container).':'.$shallower;
my $selected = '';
if ($item eq $env{'form.currcat_'.$shallower}) {
$selected = ' selected="selected"';
}
$catlinks .=
'<option value="'.$item.'"'.$selected.'>'.$name.'</option>';
}
}
$catlinks .= '</select>';
}
unless ($i == $deeper) {
$catlinks .= $crumbsymbol;
}
}
my ($cat,$container,$depth);
if ($env{'form.currcat_'.$currdepth} eq '') {
my $shallower = $currdepth - 1;
($cat,$container,$depth) = map { &unescape($_); } split(/:/,$env{'form.currcat_'.$shallower});
} else {
($cat,$container,$depth) = map { &unescape($_); } split(/:/,$env{'form.currcat_'.$currdepth});
}
my $deeperlevel = $depth +1;
if (ref($cats[$deeperlevel]{$cat}) eq 'ARRAY') {
$has_subcats = 1;
my $buttontext = &mt('Show subcategories');
my $selitem = 'currcat_'.$deeperlevel;
$catlinks .= ' <select name="'.$selitem.'" onchange="this.form.submit()">';
if (@{$cats[$deeperlevel]{$cat}}) {
$catlinks .= '<option value="" selected="selected">'.
&mt('Subcategory ...').'</option>';
}
for (my $k=0; $k<@{$cats[$deeperlevel]{$cat}}; $k++) {
my $name = $cats[$deeperlevel]{$cat}[$k];
my $item = &escape($name).':'.&escape($cat).':'.$deeperlevel;
$catlinks .= '<option value="'.$item.'">'.$name.'</option>'."\n";
}
$catlinks .= '</select>'."\n";
} elsif ($cat ne 'instcode') {
$catlinks .= ' '.&mt('(No subcategories)');
}
} else {
$selitem = 'currcat_0';
}
$catlinks .= $currcat_str.'</td></tr></table></td>';
return ($catlinks,$has_subcats,$selitem);
}
sub main_category_selector {
my (@cats) = @_;
my $maincatlinks = '<select name="currcat_0" onchange="setCatDepth('."'0'".');this.form.submit();">'."\n";
if (ref($cats[0]) eq 'ARRAY') {
if (@{$cats[0]} > 1) {
my $selected = '';
if ($env{'form.currcat_0'} eq '') {
$selected = ' selected="selected"';
}
$maincatlinks .=
'<option value=""'.$selected.'>'.&mt('Select').'</option>'."\n";
}
for (my $i=0; $i<@{$cats[0]}; $i++) {
my $name = $cats[0][$i];
my $item = &escape($name).'::0';
my $selected;
if ($env{'form.currcat_0'} eq $item) {
$selected = ' selected="selected"';
}
$maincatlinks .= '<option value="'.$item.'"'.$selected.'>';
if ($name eq 'instcode') {
$maincatlinks .= &mt('Official courses (with institutional codes)');
} elsif ($name eq 'communities') {
$maincatlinks .= &mt('Communities');
} elsif ($name eq 'placement') {
$maincatlinks .= &mt('Placement Tests');
} else {
$maincatlinks .= $name;
}
$maincatlinks .= '</option>'."\n";
}
$maincatlinks .= '</select>'."\n";
}
return $maincatlinks;
}
sub get_depth_values {
my $currdepth = 0;
my $deeper = 0;
if ($env{'form.catalog_maxdepth'} ne '') {
$currdepth = $env{'form.catalog_maxdepth'};
if ($env{'form.currcat_'.$currdepth} eq '') {
$deeper = $currdepth;
} else {
$deeper = $currdepth + 1;
}
}
return ($currdepth,$deeper);
}
sub additional_filters {
my ($codedom,$has_subcats,$canviewall) = @_;
my $is_dc = &user_is_dc($codedom);
my $output = '<div class="LC_left_float">';
if ($is_dc || $canviewall) {
$output .= '<fieldset><legend>'.&mt('Options').'</legend>';
}
$output .= '<table><tr><td valign="top">';
if (($env{'form.currcat_0'} ne 'instcode::0') &&
($env{'form.currcat_0'} ne '') && ($has_subcats)) {
my $include_subcat_status;
if ($env{'form.withsubcats'}) {
$include_subcat_status = 'checked="checked" ';
}
my $counter = $env{'form.catalog_maxdepth'};
if ($counter > 0) {
if ($env{'form.state'} eq 'listing') {
$counter --;
} elsif ($env{'form.currcat_'.$counter} eq '') {
$counter --;
}
}
my ($catname) = split(/:/,$env{'form.currcat_'.$counter});
if ($catname ne '') {
$output .= '<span class="LC_nobreak"><label>'.
'<input type="checkbox" name="withsubcats" value="1" '.
$include_subcat_status.'/>'.
&mt('Include subcategories within "[_1]"',
&unescape($catname)).'</label></span><br />';
}
}
my $show_selfenroll_status;
if ($env{'form.showselfenroll'}) {
$show_selfenroll_status = 'checked="checked" ';
}
my $selfenroll_text;
if ($env{'form.currcat_0'} eq 'communities::0') {
$selfenroll_text = &mt('Only show communities which currently allow self-enrollment (or will allow it in the future)');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$selfenroll_text = &mt('Only show placement tests which currently allow self-enrollment (or will allow it in the future)');
} else {
$selfenroll_text = &mt('Only show courses which currently allow self-enrollment (or will allow it in the future)');
}
$output .= '<span class="LC_nobreak">'.
'<label><input type="checkbox" name="showselfenroll" value="1" '.
$show_selfenroll_status.'/>'.$selfenroll_text.
'</label></span><br />';
if ($is_dc || $canviewall) {
my ($titlesref,$orderref) = &get_statustitles('filters');
my $showdetails_status;
if ($env{'form.showdetails'}) {
$showdetails_status = 'checked="checked" ';
}
my $showhidden_status;
if ($env{'form.showhidden'}) {
$showhidden_status = 'checked="checked" ';
}
my @currstatuses = &Apache::loncommon::get_env_multiple('form.showcounts');
my ($details_text,$hidden_text,$statusdisplay,$cellborder);
my $wasactivedisplay = 'none';
if ($env{'form.showdetails'}) {
$statusdisplay = 'block';
$cellborder = 'border-left: 1px solid;';
if (grep(/^Previous$/,@currstatuses)) {
$wasactivedisplay = 'block';
}
} else {
$statusdisplay = 'none';
$cellborder = 'border-left: 0px';
}
if ($env{'form.currcat_0'} eq 'communities::0') {
$details_text = &mt('Show full details for each community (domain staff only)');
$hidden_text = &mt('Include communities set to be hidden from catalog (domain staff only)');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$details_text = &mt('Show full details for each placement test (domain staff only)');
$hidden_text = &mt('Include placement tests set to be hidden from catalog (domain staff only)');
} else {
$details_text = &mt('Show full details for each course (domain staff only)');
$hidden_text = &mt('Include courses set to be hidden from catalog (domain staff only)');
}
if ($is_dc) {
$output .= '<span class="LC_nobreak">'.
'<label><input type="checkbox" name="showhidden" value="1" '.
$showhidden_status.'/>'.$hidden_text.
'</label></span><br />'."\n";
}
$output .= '<span class="LC_nobreak">'.
'<label><input type="checkbox" name="showdetails" value="1" '.
$showdetails_status.'onclick="toggleStatuses();" />'.
$details_text.'</label></span></td>'."\n".
'<td id="statuscell" valign="top" style="'.$cellborder.'">'.
'<div id="statuschoice" style="display:'.$statusdisplay.'">';
if (ref($orderref) eq 'ARRAY') {
if (@{$orderref} > 0) {
foreach my $type (@{$orderref}) {
my $checked;
if (grep(/^\Q$type\E$/,@currstatuses)) {
$checked = ' checked="checked"';
}
my $title;
if (ref($titlesref) eq 'HASH') {
$title = $titlesref->{$type};
}
unless ($title) {
$title = &mt($type);
}
my $onclick;
if ($type eq 'Previous') {
$onclick = ' onclick="toggleWasActive();"';
}
$output .= '<span class="LC_nobreak">'.
'<label><input type="checkbox" id="counts_'.$type.'"'.
' name="showcounts" value="'.$type.'"'.$checked.$onclick.
' />'.$title.'</label></span>';
if ($type eq 'Previous') {
my %milestonetext = &Apache::lonlocal::texthash (
accessend => 'immediately prior to default end access date',
enrollend => 'immediately prior to end date for auto-enrollment',
date => 'immediately prior to specific date:',
);
my @statuses = &Apache::loncommon::get_env_multiple('form.showcounts');
$output .= '<span id="choosewasacctext" class="LC_nobreak">';
if ($checked) {
$output .= &get_wasactive_text();
}
$output .= '</span>'.
'<div id="choosewasactive" style="display:'.$wasactivedisplay.'">'.
'<table>';
my @milestones = ('accessend');
if (&Apache::lonnet::auto_run(undef,$codedom)) {
push(@milestones,'enrollend');
}
push(@milestones,'date');
foreach my $item (@milestones) {
my $checked;
if ($env{'form.state'} eq 'listing') {
if ($env{'form.wasactive'} eq $item) {
$checked = ' checked="checked"';
}
} elsif ($item eq 'accessend') {
$checked = ' checked="checked"';
}
$output .=
'<tr><td width="10"> </td><td>'.
'<span class="LC_nobreak"><label>'.
'<input type="radio" value="'.$item.'" name="wasactive"'.$checked.' />'.
$milestonetext{$item}.'</label></span>';
if ($item eq 'date') {
my $wasactiveon;
if (grep(/^Previous$/,@currstatuses)) {
$wasactiveon =
&Apache::lonhtmlcommon::get_date_from_form('wasactiveon');
} else {
$wasactiveon = 'now';
}
$output .= ' '.
&Apache::lonhtmlcommon::date_setter('coursecatalog',
'wasactiveon',
$wasactiveon,
'','','',1,'',
'','',1);
}
$output .= '</td></tr>';
}
$output .= '</table></div>';
}
$output .= '<br />';
}
}
}
$output .= '</div></td>';
} else {
$output .= '</td>';
}
$output .= '</tr></table></fieldset></div>'.
'<div style="clear:both;margin:0;"></div>';
return $output;
}
sub user_is_dc {
my ($codedom) = @_;
if (exists($env{'user.role.dc./'.$codedom.'/'})) {
my $livedc = 1;
my $now = time;
my ($start,$end)=split(/\./,$env{'user.role.dc./'.$codedom.'/'});
if ($start && $start>$now) { $livedc = 0; }
if ($end && $end <$now) { $livedc = 0; }
return $livedc;
}
return;
}
sub canview_all {
my ($knownuser,$codedom) = @_;
my $canviewall = 0;
my $page = 'coursecatalog';
if (&LONCAPA::lonauthcgi::can_view($page)) {
$canviewall = 1;
} elsif (&LONCAPA::lonauthcgi::check_ipbased_access($page)) {
$canviewall= 1;
} elsif (($knownuser) && ($codedom ne '')) {
if (&Apache::lonnet::allowed('dcd',$codedom)) {
$canviewall = 1;
}
}
return $canviewall;
}
sub get_statustitles {
my ($caller) = @_;
my @status_order = ('Active','Future','Previous');
my %status_title;
if ($caller eq 'filters') {
%status_title = &Apache::lonlocal::texthash(
Previous => 'Show count for past access',
Active => 'Show count for current student access',
Future => 'Show count for future student access',
);
if ($env{'form.currcat_0'} eq 'communities::0') {
$status_title{'Active'} = 'Show count for current member access';
$status_title{'Future'} = 'Show count for future member access';
}
} else {
%status_title = &Apache::lonlocal::texthash(
Previous => 'Previous access',
Active => 'Current access',
Future => 'Future access',
);
}
return (\%status_title,\@status_order);
}
sub get_wasactive_text {
my $wasacctext = ' -- ';
if ($env{'form.currcat_0'} eq 'communities::0') {
$wasacctext .= &mt('where member access status was current ...');
} else {
$wasacctext .= &mt('where student access status was current ...');
}
return $wasacctext;
}
sub search_official_courselist {
my ($domain,$numtitles,$codetitles) = @_;
my $instcode = &Apache::courseclassifier::instcode_search_str($domain,$numtitles,$codetitles);
my $showhidden;
if (&user_is_dc($domain)) {
$showhidden = $env{'form.showhidden'};
}
my %courses =
&Apache::lonnet::courseiddump($domain,'.',1,$instcode,'.','.',undef,undef,
'Course',1,$env{'form.showselfenroll'},undef,
$showhidden,'coursecatalog');
return %courses;
}
sub search_courselist {
my ($domain,$subcats) = @_;
my $cat_maxdepth = $env{'form.catalog_maxdepth'};
my $filter = $env{'form.currcat_'.$cat_maxdepth};
if (($filter eq '') && ($cat_maxdepth > 0)) {
my $shallower = $cat_maxdepth - 1;
$filter = $env{'form.currcat_'.$shallower};
}
my %courses;
my $filterstr;
if ($filter ne '') {
if ($env{'form.withsubcats'}) {
if (ref($subcats) eq 'HASH') {
if (ref($subcats->{$filter}) eq 'ARRAY') {
$filterstr = join('&',@{$subcats->{$filter}});
if ($filterstr ne '') {
$filterstr = $filter.'&'.$filterstr;
}
} else {
$filterstr = $filter;
}
} else {
$filterstr = $filter;
}
} else {
$filterstr = $filter;
}
my ($showhidden,$typefilter);
if (&user_is_dc($domain)) {
$showhidden = $env{'form.showhidden'};
}
if ($env{'form.currcat_0'} eq 'communities::0') {
$typefilter = 'Community';
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$typefilter = 'Placement';
} else {
$typefilter = '.';
}
%courses =
&Apache::lonnet::courseiddump($domain,'.',1,'.','.','.',undef,undef,
$typefilter,1,$env{'form.showselfenroll'},
$filterstr,$showhidden,'coursecatalog');
}
return %courses;
}
sub print_course_listing {
my ($domain,$numtitles,$trails,$allitems,$subcats,$codetitles,$canviewall,$hostname) = @_;
my $output;
my %courses;
my $knownuser = &user_is_known();
my $canviewall = &canview_all();
my $details = $env{'form.coursenum'};
if (&user_is_dc($domain) || $canviewall) {
if ($env{'form.showdetails'}) {
$details = 1;
}
}
if ($env{'form.coursenum'} ne '') {
%courses = &Apache::lonnet::courseiddump($domain,'.',1,'.','.',
$env{'form.coursenum'},
undef,undef,'.',1);
if (keys(%courses) == 0) {
$output = '<p class="LC_error">';
if ($env{'form.currcat_0'} eq 'communities::0') {
$output .= &mt('The courseID provided does not match a community in this domain.');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$output .= &mt('The courseID provided does not match a placement test in this domain.');
} else {
$output .= &mt('The courseID provided does not match a course in this domain.');
}
$output .= '</p>';
return $output;
}
} else {
if ($env{'form.currcat_0'} eq 'instcode::0') {
%courses = &search_official_courselist($domain,$numtitles,$codetitles);
} else {
%courses = &search_courselist($domain,$subcats);
}
if (keys(%courses) == 0) {
$output = '<p class="LC_info">';
if ($env{'form.currcat_0'} eq 'communities::0') {
$output .= &mt('No communities match the criteria you selected.');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$output .= &mt('No placement tests match the criteria you selected.');
} else {
$output .= &mt('No courses match the criteria you selected.');
}
$output .= '</p>';
return $output;
}
if (($knownuser) && (!$env{'form.showdetails'}) && (!&user_is_dc($domain)) && (!$canviewall)) {
$output = '<b>'.&mt('Note for students:').'</b> '
.&mt('If you are officially enrolled in a course but the course is not listed in your LON-CAPA courses, click the "Show more details" link for the specific course and check the default access dates and/or automated enrollment settings.')
.'<br /><br />';
}
}
my $now = time;
$output .= &construct_data_table($knownuser,$domain,\%courses,$details,undef,
$now,$trails,$allitems,$canviewall,$hostname);
$output .= "\n".'<form name="linklaunch" method="post" action="">'.
'<input type="hidden" name="backto" value="coursecatalog" />'.
'<input type="hidden" name="courseid" value="" />'.
&Apache::lonhtmlcommon::echo_form_input(['catalogfilter','courseid']).'</form>';
return $output;
}
sub construct_data_table {
my ($knownuser,$domain,$courses,$details,$usersections,$now,
$trails,$allitems,$canviewall,$hostname) = @_;
my %sortname;
if (($details eq '') || ($env{'form.showdetails'})) {
$sortname{'Code'} = 'code';
$sortname{'Categories'} = 'cats';
$sortname{'Title'} = 'title';
$sortname{'Owner & Co-owner(s)'} = 'owner';
}
my $output = &Apache::loncommon::start_data_table().
&Apache::loncommon::start_data_table_header_row();
my @coltitles = ('Count');
if ($env{'form.currcat_0'} eq 'instcode::0') {
push(@coltitles,'Code');
} else {
push(@coltitles,'Categories');
}
push(@coltitles,('Sections','Crosslisted','Title','Owner & Co-owner(s)'));
if (ref($usersections) eq 'HASH') {
$coltitles[1] = 'Your Section';
}
foreach my $item (@coltitles) {
$output .= '<th>';
if (defined($sortname{$item})) {
$output .= '<a href="javascript:changeSort('."'$sortname{$item}'".')">'.&mt($item).'</a>';
} elsif ($item eq 'Count') {
$output .= ' ';
} else {
$output .= &mt($item);
}
$output .= '</th>';
}
my (@fields,%fieldtitles,$wasactiveon);
if ($knownuser || ($canviewall && $details)) {
if ($details) {
if ($env{'form.currcat_0'} eq 'communities::0') {
$output .= '<th>'.&mt('Default Access Dates for Members').'</th>'.
'<th>'.&mt('Member Counts').'</th>';
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$output .=
'<th>'.&mt('Default Access Dates for Students').'</th>'.
'<th>'.&mt('Student Counts').'</th>';
} else {
$output .=
'<th>'.&mt('Default Access Dates for Students').'</th>'.
'<th>'.&mt('Student Counts').'</th>'.
'<th>'.&mt('Auto-enrollment of[_1]registered students','<br />').'</th>';
}
my ($titlesref,$orderref) = &get_statustitles();
my @statuses;
if (&user_is_dc($domain) || $canviewall) {
@statuses = &Apache::loncommon::get_env_multiple('form.showcounts');
if (grep(/^Previous$/,@statuses)) {
if ($env{'form.wasactive'} eq 'date') {
$wasactiveon =
&Apache::lonhtmlcommon::get_date_from_form('wasactiveon');
} else {
$wasactiveon = $env{'form.wasactive'};
}
}
if (ref($orderref) eq 'ARRAY') {
foreach my $status (@{$orderref}) {
if (grep(/^\Q$status\E$/,@statuses)) {
push(@fields,$status);
}
}
}
} else {
@fields = ('Active','Future');
}
foreach my $status (@fields) {
my $title;
if (ref($titlesref) eq 'HASH') {
$title = $titlesref->{$status};
}
unless ($title) {
$title = &mt($status);
}
$fieldtitles{$status} = $title;
}
} else {
$output .= '<th>'.&mt('Details').'</th>';
}
}
$output .= '<th>'.&mt('Self-enroll (if permitted)').'</th>';
&Apache::loncommon::end_data_table_header_row();
my (%numbers,%creditsum);
my ($showcredits,$defofficial,$defunofficial,$deftextbook);
my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
unless (($env{'form.currcat_0'} eq 'communities::0') || ($env{'form.currcat_0'} eq 'placement::0')) {
if ($domdefaults{'officialcredits'} || $domdefaults{'unofficialcredits'} || $domdefaults{'textbookcredits'}) {
$showcredits = 1;
$defofficial = $domdefaults{'officialcredits'};
$defunofficial = $domdefaults{'unofficialcredits'};
$deftextbook = $domdefaults{'textbookcredits'};
}
}
my %courseinfo = &build_courseinfo_hash($courses,$knownuser,$domain,$canviewall,$details,
$usersections,\@fields,\%fieldtitles,
$wasactiveon,\%numbers,\%creditsum,
$showcredits,$defofficial,$defunofficial,$deftextbook);
my %Sortby;
foreach my $course (sort(keys(%{$courses}))) {
if ($env{'form.sortby'} eq 'code') {
push(@{$Sortby{$courseinfo{$course}{'code'}}},$course);
} elsif ($env{'form.sortby'} eq 'cats') {
push(@{$Sortby{$courseinfo{$course}{'categories'}}},$course);
} elsif ($env{'form.sortby'} eq 'owner') {
push(@{$Sortby{$courseinfo{$course}{'ownerlastnames'}}},$course);
} else {
my $clean_title = $courseinfo{$course}{'title'};
$clean_title =~ s/\W+//g;
if ($clean_title eq '') {
$clean_title = $courseinfo{$course}{'title'};
}
push(@{$Sortby{$clean_title}},$course);
}
}
my @sorted_courses;
if (($env{'form.sortby'} eq 'code') || ($env{'form.sortby'} eq 'owner') ||
($env{'form.sortby'} eq 'cats')) {
@sorted_courses = sort(keys(%Sortby));
} else {
@sorted_courses = sort { lc($a) cmp lc($b) } (keys(%Sortby));
}
my $count = 1;
my $totalsec = 0;
my %clutteredxlists;
foreach my $course (keys(%courseinfo)) {
if (ref($courseinfo{$course}) eq 'HASH') {
if ($courseinfo{$course}{'xlist'} ne '') {
my $crskey = $courseinfo{$course}{'cnum'}.':'.$courseinfo{$course}{'code'};
my @xlists = split(/,\s/,$courseinfo{$course}{'xlist'});
$clutteredxlists{$crskey} = \@xlists;
}
}
}
if (keys(%clutteredxlists)) {
my %reformattedxlists = &Apache::lonnet::auto_instsec_reformat($domain,'declutter',\%clutteredxlists);
foreach my $crskey (keys(%reformattedxlists)) {
if (ref($reformattedxlists{$crskey}) eq 'ARRAY') {
my $course = $domain.'_'.(split(/:/,$crskey))[0];
$courseinfo{$course}{'xlist'} = join(', ',@{$reformattedxlists{$crskey}});
}
}
}
foreach my $item (@sorted_courses) {
foreach my $course (@{$Sortby{$item}}) {
$output.=&Apache::loncommon::start_data_table_row();
$output.=&courseinfo_row($courseinfo{$course},$knownuser,$details,
\$count,$now,$course,$trails,$allitems,
\%numbers,$canviewall,$hostname);
$output.=&Apache::loncommon::end_data_table_row();
}
}
if (($knownuser || $canviewall) && ($count > 1) && $env{'form.showdetails'}) {
if (&user_is_dc($domain) || $canviewall) {
my %lt = &Apache::lonlocal::texthash (
'Active' => 'Total current students',
'Future' => 'Total future students',
'Previous' => 'Total previous students',
'courses' => 'Total unique codes and courses without codes',
'sections' => 'Total sections',
'xlists' => 'Total cross-listings',
);
if ($showcredits) {
$lt{'cr_Active'} = &mt('Total current student credit hours');
$lt{'cr_Future'} = &mt('Total future student credit hours');
$lt{'cr_Previous'} = &mt('Total previous student credit hours');
}
if ($env{'form.currcat_0'} eq 'communities::0') {
$lt{'courses'} = &mt('Total communities');
$lt{'Active'} = &mt('Total current members');
$lt{'Future'} = &mt('Total future members');
$lt{'Previous'} = &mt('Total previous members');
} elsif ($env{'form.currcat_0'} eq 'placement::0') {
$lt{'courses'} = &mt('Total placement tests');
}
my $colspan = 8;
if ($showcredits) {
$colspan = 4;
}
$output .= '<tr class="LC_footer_row">'.
'<td colspan="2"> </td>'.
'<td colspan="'.$colspan.'">'.
'<table border="0">';
foreach my $item ('courses','sections','xlists') {
$output .= '<tr>'.
'<td>'.$lt{$item}.'</td><td> </td>'.
'<td align="right">'.$numbers{$item}.'</td>'.
'</tr>'."\n";
}
if (@fields > 0) {
foreach my $status (@fields) {
$output .= '<tr>'.
'<td>'.$lt{$status}.'</td><td> </td>'.
'<td align="right">'.$numbers{$status}.'</td>'.
'</tr>'."\n";
}
}
$output .= '</table></td>';
if ($showcredits) {
$output .= '<td colspan="'.$colspan.'" valign="bottom"><table>';
foreach my $status (@fields) {
$output .= '<tr>'.
'<td>'.$lt{'cr_'.$status}.'</td><td> </td>'.
'<td align="right">'.$creditsum{$status}.'</td></tr>';
}
$output .= '</table></td></tr>';
}
}
}
$output .= &Apache::loncommon::end_data_table();
return $output;
}
sub build_courseinfo_hash {
my ($courses,$knownuser,$domain,$canviewall,$details,$usersections,$fields,$fieldtitles,
$wasactiveon,$numbers,$creditsum,$showcredits,$defofficial,$defunofficial) = @_;
my %courseinfo;
my $now = time;
my $gettotals;
if ((keys(%{$courses}) > 0) && (&user_is_dc($domain) || $canviewall) && ($details)) {
$gettotals = 1;
}
my (%uniquecodes,$nocodes,$defcreds);
foreach my $course (keys(%{$courses})) {
my $descr;
if (ref($courses->{$course}) eq 'HASH') {
$descr = $courses->{$course}{'description'};
}
my $cleandesc=&HTML::Entities::encode($descr,'<>&"');
$cleandesc=~s/'/\\'/g;
$cleandesc =~ s/^\s+//;
my ($cdom,$cnum)=split(/\_/,$course);
my ($instcode,$singleowner,$ttype,$selfenroll_types,$extsyllplain,
$selfenroll_start,$selfenroll_end,@owners,%ownernames,$categories);
if (ref($courses->{$course}) eq 'HASH') {
$descr = $courses->{$course}{'description'};
$instcode = $courses->{$course}{'inst_code'};
$singleowner = $courses->{$course}{'owner'};
$ttype = $courses->{$course}{'type'};
$selfenroll_types = $courses->{$course}{'selfenroll_types'};
$selfenroll_start = $courses->{$course}{'selfenroll_start_date'};
$selfenroll_end = $courses->{$course}{'selfenroll_end_date'};
$categories = $courses->{$course}{'categories'};
$extsyllplain = $courses->{$course}{'extsyllplain'};
push(@owners,$singleowner);
if ($courses->{$course}{'co-owners'} ne '') {
foreach my $item (split(/,/,$courses->{$course}{'co-owners'})) {
push(@owners,$item);
}
}
}
if ($instcode ne '') {
$uniquecodes{$instcode} = 1;
} else {
$nocodes ++;
}
foreach my $owner (@owners) {
my ($ownername,$ownerdom);
if ($owner =~ /:/) {
($ownername,$ownerdom) = split(/:/,$owner);
} else {
$ownername = $owner;
if ($owner ne '') {
$ownerdom = $cdom;
}
}
if ($ownername ne '' && $ownerdom ne '') {
my %namehash=&Apache::loncommon::getnames($ownername,$ownerdom);
$ownernames{$ownername.':'.$ownerdom} = \%namehash;
}
}
$courseinfo{$course}{'cdom'} = $cdom;
$courseinfo{$course}{'cnum'} = $cnum;
$courseinfo{$course}{'code'} = $instcode;
my @lastnames;
foreach my $owner (keys(%ownernames)) {
if (ref($ownernames{$owner}) eq 'HASH') {
push(@lastnames,$ownernames{$owner}{'lastname'});
}
}
$courseinfo{$course}{'ownerlastnames'} = join(', ',sort(@lastnames));
$courseinfo{$course}{'title'} = $cleandesc;
$courseinfo{$course}{'owner'} = $singleowner;
$courseinfo{$course}{'selfenroll_types'} = $selfenroll_types;
$courseinfo{$course}{'selfenroll_start'} = $selfenroll_start;
$courseinfo{$course}{'selfenroll_end'} = $selfenroll_end;
$courseinfo{$course}{'categories'} = $categories;
$courseinfo{$course}{'extsyllplain'} = $extsyllplain;
my %coursehash = &Apache::lonnet::dump('environment',$cdom,$cnum);
my @classids;
my @crosslistings;
my ($seclist,$numsec) =
&identify_sections($coursehash{'internal.sectionnums'});
$courseinfo{$course}{'seclist'} = $seclist;
my ($xlist_items,$numxlist) =
&identify_sections($coursehash{'internal.crosslistings'});
if (ref($numbers) eq 'HASH') {
$numbers->{'sections'} += $numsec;
$numbers->{'xlists'} += $numxlist;
}
my $showsyllabus = 1; # default is to include a syllabus link
if (defined($coursehash{'showsyllabus'})) {
$showsyllabus = $coursehash{'showsyllabus'};
}
$courseinfo{$course}{'showsyllabus'} = $showsyllabus;
if ($showcredits) {
if ($coursehash{'internal.defaultcredits'}) {
$courseinfo{$course}{'defaultcredits'} = $coursehash{'internal.defaultcredits'};
} elsif ($instcode ne '') {
$courseinfo{$course}{'defaultcredits'} = $defofficial;
} else {
$courseinfo{$course}{'defaultcredits'} = $defunofficial;
}
$defcreds = $courseinfo{$course}{'defaultcredits'};
}
if (((defined($env{'form.coursenum'}) && ($cnum eq $env{'form.coursenum'}))) ||
(($knownuser || $canviewall) && ($details == 1))) {
my $milestone;
if ($wasactiveon eq 'accessend') {
if ($coursehash{'default_enrollment_end_date'}) {
$milestone = $coursehash{'default_enrollment_end_date'};
} else {
$milestone = time;
}
} elsif ($wasactiveon eq 'enrollend') {
if ($coursehash{'internal.autoend'}) {
$milestone = $coursehash{'internal.autoend'};
} else {
$milestone = time;
}
} else {
$milestone = $wasactiveon;
}
$courseinfo{$course}{'counts'} =
&count_students($cdom,$cnum,$numsec,$fields,$fieldtitles,$gettotals,
$numbers,$creditsum,$showcredits,$defcreds,$milestone);
if ($instcode ne '') {
$courseinfo{$course}{'autoenrollment'} =
&autoenroll_info(\%coursehash,$now,$seclist,$xlist_items,
$instcode,\@owners,$cdom,$cnum);
}
my $startaccess = '';
my $endaccess = '';
my $accessdates;
if ( defined($coursehash{'default_enrollment_start_date'}) ) {
$startaccess = &Apache::lonlocal::locallocaltime($coursehash{'default_enrollment_start_date'});
}
if ( defined($coursehash{'default_enrollment_end_date'}) ) {
$endaccess = &Apache::lonlocal::locallocaltime($coursehash{'default_enrollment_end_date'});
if ($coursehash{'default_enrollment_end_date'} == 0) {
$endaccess = &mt('No ending date');
}
}
if ($startaccess) {
$accessdates .= '<i>'.&mt('From:[_1]','</i> '.$startaccess).'<br />';
}
if ($endaccess) {
$accessdates .= '<i>'.&mt('To:[_1]','</i> '.$endaccess).'<br />';
}
if (($selfenroll_types ne '') &&
($selfenroll_end > 0 && $selfenroll_end > $now)) {
my ($selfenroll_start_access,$selfenroll_end_access);
if (($coursehash{'default_enrollment_start_date'} ne
$coursehash{'internal.selfenroll_start_access'}) ||
($coursehash{'default_enrollment_end_date'} ne
$coursehash{'internal.selfenroll_end_access'})) {
if ( defined($coursehash{'internal.selfenroll_start_access'}) ) {
$selfenroll_start_access = &Apache::lonlocal::locallocaltime($coursehash{'internal.selfenroll_start_access'});
}
if ( defined($coursehash{'default_enrollment_end_date'}) ) {
$selfenroll_end_access = &Apache::lonlocal::locallocaltime($coursehash{'internal.selfenroll_end_access'});
if ($coursehash{'internal.selfenroll_end_access'} == 0) {
$selfenroll_end_access = &mt('No ending date');
}
}
if ($selfenroll_start_access || $selfenroll_end_access) {
$accessdates .= '<br/><br /><i>'.&mt('Self-enrollers:').'</i><br />';
if ($selfenroll_start_access) {
$accessdates .= '<i>'.&mt('From:[_1]','</i> '.$selfenroll_start_access).'<br />';
}
if ($selfenroll_end_access) {
$accessdates .= '<i>'.&mt('To:[_1]','</i> '.$selfenroll_end_access).'<br />';
}
}
}
}
$courseinfo{$course}{'access'} = $accessdates;
}
if ($xlist_items eq '') {
$xlist_items = &mt('No');
}
$courseinfo{$course}{'xlist'} = $xlist_items;
}
if (ref($numbers) eq 'HASH') {
$numbers->{'courses'} = $nocodes + scalar(keys(%uniquecodes));
}
return %courseinfo;
}
sub count_students {
my ($cdom,$cnum,$numsec,$fieldsref,$titlesref,$getcounts,$numbers,$creditsum,
$showcredits,$defcreds,$wasactiveon) = @_;
my $countslist = '<span class="LC_nobreak">'.
&mt('[quant,_1,section,sections,No sections]',$numsec).'</span>';
my (@fields,%titles,$showexpired);
if ((ref($fieldsref) eq 'ARRAY') && (ref($titlesref) eq 'HASH') &&
(ref($numbers) eq 'HASH')) {
@fields = @{$fieldsref};
%titles = %{$titlesref};
if (grep(/^Previous$/,@fields)) {
$showexpired = 1;
}
} else {
return;
}
my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cnum);
my (%student_count,%credit_count);
%student_count = (
Active => 0,
Future => 0,
Previous => 0,
);
if ($showcredits) {
%credit_count = (
Active => 0,
Future => 0,
Previous => 0,
);
}
my %idx;
$idx{'status'} = &Apache::loncoursedata::CL_STATUS();
$idx{'end'} = &Apache::loncoursedata::CL_END();
$idx{'credits'} = &Apache::loncoursedata::CL_CREDITS();
while (my ($student,$data) = each(%$classlist)) {
my $status = $data->[$idx{'status'}];
my $credits = $data->[$idx{'credits'}];
if ($credits eq '') {
$credits = $defcreds;
}
if ($status eq 'Expired') {
if (($showexpired) &&
($data->[$idx{'end'}] >= $wasactiveon)) {
$student_count{'Previous'} ++;
if ($showcredits) {
$credit_count{'Previous'} += $credits;
}
}
} else {
$student_count{$status} ++;
if ($showcredits) {
$credit_count{$status} += $credits;
}
}
}
if (@fields) {
$countslist .= ':<br />';
foreach my $status (@fields) {
$countslist .= '<span class="LC_nobreak">'.$titles{$status}.': '.
$student_count{$status}.'</span><br />';
$numbers->{$status} += $student_count{$status};
if ($showcredits) {
$creditsum->{$status} += $credit_count{$status};
}
}
}
return $countslist;
}
sub courseinfo_row {
my ($info,$knownuser,$details,$countref,$now,$course,$trails,$allitems,
$numbers,$canviewall,$hostname) = @_;
my ($cdom,$cnum,$title,$ownerlast,$code,$owner,$seclist,$xlist_items,
$accessdates,$showsyllabus,$counts,$autoenrollment,$output,$categories,
$extsyllplain);
if (ref($info) eq 'HASH') {
$cdom = $info->{'cdom'};
$cnum = $info->{'cnum'};
$title = $info->{'title'};
$ownerlast = $info->{'ownerlastnames'};
$code = $info->{'code'};
$owner = $info->{'owner'};
$seclist = $info->{'seclist'};
$xlist_items = $info->{'xlist'};
$accessdates = $info->{'access'};
$counts = $info->{'counts'};
$autoenrollment = $info->{'autoenrollment'};
$showsyllabus = $info->{'showsyllabus'};
$extsyllplain = $info->{'extsyllplain'};
$categories = $info->{'categories'};
} else {
$output = '<td colspan="8">'.&mt('No information available for [_1].',
$code).'</td>';
return $output;
}
$output .= '<td>'.$$countref.'</td>';
if ($env{'form.currcat_0'} eq 'instcode::0') {
$output .= '<td>'.$code.'</td>';
} else {
my ($categorylist,@cats);
if ($categories ne '') {
@cats = split('&',$categories);
}
if ((ref($trails) eq 'ARRAY') && (ref($allitems) eq 'HASH')) {
my @categories = map { $trails->[$allitems->{$_}]; } @cats;
$categorylist = join('<br />',@categories);
}
if ($categorylist eq '') {
$categorylist = ' ';
}
$output .= '<td>'.$categorylist.'</td>';
}
$output .= '<td>'.$seclist.'</td>'.
'<td>'.$xlist_items.'</td>'.
'<td>'.$title.' <font size="-2">';
if ($showsyllabus) {
my $usehttp = 0;
if (($ENV{'SERVER_PORT'} == 443) && ($extsyllplain)) {
unless ((&Apache::lonnet::uses_sts()) ||
(&Apache::lonnet::waf_allssl($hostname))) {
$usehttp = 1;
}
}
$output .= '<a href="javascript:ToSyllabus('."'$cdom','$cnum','$usehttp'".')">'.&mt('Syllabus').'</a>';
} else {
$output .= ' ';
}
$output .= '</font></td>'.
'<td>'.$ownerlast.'</td>';
if (($knownuser) || ($canviewall && $details)) {
if ($details) {
$output .=
'<td>'.$accessdates.'</td>'.
'<td>'.$counts.'</td>';
unless (($env{'form.currcat_0'} eq 'communities::0') || ($env{'form.currcat_0'} eq 'placement::0')) {
$output .= '<td>'.$autoenrollment.'</td>';
}
} else {
$output .= "<td><a href=\"javascript:setCourseId('$cnum')\">".&mt('Show more details').'</a></td>';
}
}
my $selfenroll = &selfenroll_status($info,$course);
if ($selfenroll) {
$output .= '<td>'.$selfenroll.'</td>';
} else {
$output .= '<td> </td>';
}
$$countref ++;
return $output;
}
sub selfenroll_status {
my ($info,$course) = @_;
my $now = time;
my $output;
if (ref($info) eq 'HASH') {
if ($info->{'selfenroll_types'}) {
my $showstart = &Apache::lonlocal::locallocaltime($info->{'selfenroll_start'});
my $showend = &Apache::lonlocal::locallocaltime($info->{'selfenroll_end'});
if (($info->{'selfenroll_end'} > 0) && ($info->{'selfenroll_end'} > $now)) {
if (($info->{'selfenroll_start'} > 0) && ($info->{'selfenroll_start'} > $now)) {
$output = &mt('Starts: [_1]','<span class="LC_cusr_emph">'.$showstart.'</span>').'<br />'.&mt('Ends: [_1]','<span class="LC_cusr_emph">'.$showend.'</span>');
} else {
$output = '<a href="javascript:ToSelfenroll('."'$course'".')">'.
&mt('Enroll in course').'</a><br />';
if ($info->{'selfenroll_end'} == 0) {
$output .= &mt('Available permanently');
} elsif ($info->{'selfenroll_end'} > $now) {
$output .= &mt('Self-enrollment ends: [_1]','<span class="LC_cusr_emph">'.$showend.'</span>');
}
}
}
}
}
return $output;
}
sub identify_sections {
my ($seclist) = @_;
my @secnums;
if ($seclist =~ /,/) {
my @sections = split(/,/,$seclist);
foreach my $sec (@sections) {
$sec =~ s/:[^:]*$//;
push(@secnums,$sec);
}
} else {
if ($seclist =~ m/^([^:]+):/) {
my $sec = $1;
if (!grep(/^\Q$sec\E$/,@secnums)) {
push(@secnums,$sec);
}
}
}
@secnums = sort {$a <=> $b} @secnums;
$seclist = join(', ',@secnums);
my $numsec = @secnums;
return ($seclist,$numsec);
}
sub get_valid_classes {
my ($seclist,$xlist_items,$crscode,$owners,$cdom,$cnum) = @_;
my $response;
my (@sections,@format_sections,@xlists,%possclasses,%okclasses,%validations);
@{$validations{'sections'}} = ();
@{$validations{'xlists'}} = ();
my $totalitems = 0;
if ($seclist) {
@sections = split(/,\s+/,$seclist);
my $crskey = $cnum.':'.$crscode;
my %formattedsec = &Apache::lonnet::auto_instsec_reformat($cdom,'clutter',
{$crskey => \@sections});
if (ref($formattedsec{$crskey}) eq 'ARRAY') {
@format_sections = @{$formattedsec{$crskey}};
map { $possclasses{$crscode.$_} = 1; } @format_sections;
}
}
if ($xlist_items) {
@xlists = split(/,\s+/,$xlist_items);
map { $possclasses{$_} = 1; } @xlists;
}
my %okclasses = &Apache::lonnet::auto_validate_instclasses($cdom,$cnum,$owners,
\%possclasses);
if (keys(%okclasses)) {
for (my $i=0; $i<@sections; $i++) {
if ($okclasses{$crscode.$format_sections[$i]}) {
my $sec = $sections[$i];
if (!grep(/^\Q$sec\E$/,@{$validations{'sections'}})) {
push(@{$validations{'sections'}},$sec);
$totalitems ++;
}
}
}
foreach my $item (@xlists) {
if ($okclasses{$item}) {
if (!grep(/^\Q$item\E$/,@{$validations{'xlists'}})) {
push(@{$validations{'xlists'}},$item);
$totalitems ++;
}
}
}
}
if ($totalitems > 0) {
if (@{$validations{'sections'}}) {
$response = &mt('Sections:').' '.
join(', ',@{$validations{'sections'}}).'<br />';
}
if (@{$validations{'xlists'}}) {
my $crskey = $cnum.':'.$crscode;
my %reformattedxlists =
&Apache::lonnet::auto_instsec_reformat($cdom,'declutter',
{$crskey => $validations{'xlists'}});
if (ref($reformattedxlists{$crskey}) eq 'ARRAY') {
$validations{'xlists'} = $reformattedxlists{$crskey};
}
$response .= &mt('Courses:').' '.
join(', ',@{$validations{'xlists'}});
}
}
return $response;
}
sub autoenroll_info {
my ($coursehash,$now,$seclist,$xlist_items,$code,$owners,$cdom,$cnum) = @_;
my $autoenrolldates = &mt('Not enabled');
if (defined($coursehash->{'internal.autoadds'}) && $coursehash->{'internal.autoadds'} == 1) {
my ($autostart,$autoend);
if ( defined($coursehash->{'internal.autostart'}) ) {
$autostart = &Apache::lonlocal::locallocaltime($coursehash->{'internal.autostart'});
}
if ( defined($coursehash->{'internal.autoend'}) ) {
$autoend = &Apache::lonlocal::locallocaltime($coursehash->{'internal.autoend'});
}
if ($coursehash->{'internal.autostart'} > $now) {
if ($coursehash->{'internal.autoend'} && $coursehash->{'internal.autoend'} < $now) {
$autoenrolldates = &mt('Not enabled');
} else {
my $valid_classes =
&get_valid_classes($seclist,$xlist_items,$code,
$owners,$cdom,$cnum);
if ($valid_classes ne '') {
$autoenrolldates = &mt('Not enabled').'<br />'
.&mt('Starts: [_1]',$autostart)
.'<br />'.$valid_classes;
}
}
} else {
if ($coursehash->{'internal.autoend'} && $coursehash->{'internal.autoend'} < $now) {
$autoenrolldates = &mt('Not enabled').'<br />'
.&mt('Ended: [_1]',$autoend);
} else {
my $valid_classes = &get_valid_classes($seclist,$xlist_items,
$code,$owners,$cdom,$cnum);
if ($valid_classes ne '') {
$autoenrolldates = &mt('Currently enabled').'<br />'.
$valid_classes;
}
}
}
}
return $autoenrolldates;
}
sub user_is_known {
my $known = 0;
if ($env{'user.name'} ne '' && $env{'user.name'} ne 'public'
&& $env{'user.domain'} ne '' && $env{'user.domain'} ne 'public') {
$known = 1;
}
return $known;
}
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