1: # The LearningOnline Network with CAPA
2: # displays the blocking status table
3: #
4: # $Id: lonblockingstatus.pm,v 1.11 2012/04/04 21:04:56 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: #
29: package Apache::lonblockingstatus;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::loncommon();
34: use Apache::lonnet;
35: use Apache::lonlocal;
36: use LONCAPA qw(:DEFAULT :match);
37:
38: sub handler {
39: my $r = shift;
40: &Apache::loncommon::no_cache($r);
41: &Apache::loncommon::content_type($r,'text/html');
42:
43: $r->send_http_header;
44: return OK if $r->header_only;
45:
46: my (%activities,$activity,$origurl);
47: map { $activities{$_} = 1; } ('boards','chat','msgdisplay','blogs','groups','port','printout','docs');
48:
49: # determine what kind of blocking we want details for
50: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['activity','url']);
51: $activity = $env{'form.activity'};
52:
53: my $title = 'Communication Blocking Status Information';
54:
55: if (($activity eq 'docs') || ($activity eq 'printout')) {
56: $title = 'Blocking Status Information';
57: $origurl = $env{'form.url'};
58: }
59: $r->print(&Apache::loncommon::start_page($title,undef,
60: {'only_body' => 1}));
61:
62: if (($activity eq '') || (!$activities{$activity})) {
63: $r->print('<span class="LC_error">'.&mt('Error: unknown activity type blocked').'</span>');
64: } else {
65: $r->print(&blockpage($activity,$origurl));
66: }
67:
68: $r->print(&Apache::loncommon::end_page());
69:
70: return OK;
71: }
72:
73:
74: sub blockpage {
75: my ($activity,$origurl) = @_;
76:
77: # in case of a portfolio block we need to determine the owner of the files
78: # we're trying to look at. This information is passed via query string.
79: my ($uname, $udom);
80:
81: if ($activity eq 'port') {
82: &Apache::loncommon::get_unprocessed_cgi(
83: $ENV{'QUERY_STRING'}, ['udom', 'uname'] );
84:
85: ($uname, $udom) = ($env{'form.uname'}, $env{'form.udom'});
86: if (($uname !~ /^$match_username$/) || ($udom !~ /^$match_domain$/)) {
87: return '<span class="LC_error">'.
88: &mt('Information about the owner of the portfolio files you were trying to view was missing or invalid.').
89: '</span><br />'.
90: &mt('Without valid owner information, the reason why access is blocked can not be determined');
91: }
92: }
93:
94:
95: # retrieve start/end of possible active blocking
96: my %setters;
97: my ($startblock,$endblock,$triggerblock) =
98: &Apache::loncommon::blockcheck(\%setters,$activity,$uname,$udom,$origurl);
99:
100: # nothing to do if there's no active blocking
101: unless ($startblock && $endblock) { return ''; }
102:
103: # lookup $activity -> description
104: #possible activity #corresponding description
105: my %descs = (
106: boards => 'Discussion posts in this course',
107: chat => 'Chat Room',
108: msgdisplay => 'This message',
109: blogs => 'Blogs',
110: groups => 'Groups in this course',
111: printout => 'Printout generation',
112: docs => 'Course Content',
113: );
114:
115: if ($activity eq 'groups' || $activity eq 'boards') {
116: if (&course_type() eq 'Community') {
117: $descs{'boards'} = 'Discussion posts in this community',
118: $descs{'groups'} = 'Groups in this community',
119: $descs{'docs'} = 'Community Content',
120: }
121: }
122:
123: my $description = $descs{$activity};
124: if ($activity eq 'port') {
125: $description = &get_portfolio_category($uname,$udom,\%setters);
126: }
127: if ($description eq '') {
128: $description = 'Communication';
129: }
130:
131: my $showstart = Apache::lonlocal::locallocaltime($startblock);
132: my $showend = Apache::lonlocal::locallocaltime($endblock);
133:
134: my $output;
135:
136: if ( ref($description) ne 'ARRAY' ) {
137: #default: $description is one of the above descriptions
138: if ($activity eq 'docs') {
139: $output=&mt( 'Access to the content page you are attempting to'
140: . ' view will be unavailable between [_1] and [_2] because'
141: . ' access to selected '.$description.' is being blocked.'
142: ,$showstart, $showend);
143: } elsif ($activity eq 'printout') {
144: $output = mt( $description
145: . ' will be unavailable between [_1] and [_2] because'
146: . ' this functionality is being blocked.'
147: ,$showstart, $showend);
148: } else {
149: $output = mt( $description
150: . ' will be inaccessible between [_1] and [_2] because'
151: . ' communication is being blocked.'
152: ,$showstart, $showend);
153: }
154: } else {
155: # @$description is is the array returned from get_portfolio_category()
156: # and contains the description (e.g. "Portfolio files belonging to [_1]"
157: # and the value for [_1]
158: $output = mt( $$description[0]
159: . ' will be inaccessible between [_2] and [_3] because'
160: . ' communication is being blocked.'
161: ,$$description[1], $showstart, $showend)
162: }
163:
164: $output = "<p class=\"LC_info\">$output</p>";
165:
166: # show a table containing details, except if user is trying to look
167: # at a different user's portfolio files
168: if ( $activity ne 'port' # no portfolio
169: || ( $uname eq $env{'user.name'} # or own portfolio
170: && $udom eq $env{'user.domain'} )
171: || Apache::lonnet::is_course($udom, $uname) ) # or portfolio of a course
172: {
173: $output .= &build_block_table(\%setters);
174: }
175:
176: return $output;
177: }
178:
179: sub build_block_table {
180: my ($setters) = @_;
181: my %lt = &Apache::lonlocal::texthash(
182: 'cacb' => 'Currently active communication/content blocks',
183: 'cour' => 'Course',
184: 'dura' => 'Duration',
185: 'blse' => 'Block set by'
186: );
187: my $output;
188: $output = Apache::loncommon::start_data_table()
189: . Apache::loncommon::data_table_caption($lt{'cacb'})
190: . Apache::loncommon::start_data_table_header_row()
191: . "<th>$lt{'cour'}</th> <th>$lt{'dura'}</th> <th>$lt{'blse'}</th>"
192: . Apache::loncommon::end_data_table_header_row();
193:
194: foreach my $course (keys(%{$setters})) {
195: my %courseinfo=&Apache::lonnet::coursedescription($course);
196: for (my $i=0; $i<@{$$setters{$course}{staff}}; $i++) {
197: my ($uname,$udom) = @{$$setters{$course}{staff}[$i]};
198: my $fullname = Apache::loncommon::plainname($uname,$udom);
199: if (defined($env{'user.name'}) && defined($env{'user.domain'})
200: && $env{'user.name'} ne 'public'
201: && $env{'user.domain'} ne 'public')
202: {
203: $fullname = Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
204: }
205: my $triggertype = $$setters{$course}{triggers}[$i];
206: if ($triggertype) {
207: $fullname .= &mt(' (triggered by you when starting timer)');
208: }
209: my ($openblock,$closeblock) = @{$$setters{$course}{times}[$i]};
210: $openblock = &Apache::lonlocal::locallocaltime($openblock);
211: $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
212: my $duration = mt('[_1] to [_2]', $openblock, $closeblock);
213: $output .= Apache::loncommon::start_data_table_row()
214: . "<td>$courseinfo{'description'}</td>"
215: . "<td>$duration</td>"
216: . "<td>$fullname</td>"
217: . Apache::loncommon::end_data_table_row();
218: }
219: }
220: $output .= Apache::loncommon::end_data_table();
221: }
222:
223: sub get_portfolio_category {
224: my ($uname, $udom, $setters) = @_;
225:
226: if ($uname eq $env{'user.name'} && $udom eq $env{'user.domain'}) {
227: # user's portolfio files
228:
229: return 'Your portfolio files';
230:
231: } elsif (Apache::lonnet::is_course($udom, $uname)) {
232: # group portfolio files
233:
234: my $coursedesc;
235:
236: foreach my $course (keys(%{$setters})) {
237: my %courseinfo = Apache::lonnet::coursedescription($course);
238: $coursedesc = $courseinfo{'description'};
239: }
240:
241: return ["Group portfolio in the course '[_1]'", $coursedesc];
242:
243: } else {
244: # different user's portfolio files
245:
246: my $plainname = Apache::loncommon::plainname($uname, $udom);
247:
248: unless ( $env{'user.name'} eq 'public'
249: && $env{'user.domain'} eq 'public' )
250: {
251: $plainname = Apache::loncommon::aboutmewrapper(
252: $plainname, $uname, $udom);
253: }
254:
255: return ['Portfolio files belonging to [_1]', $plainname];
256: }
257: }
258:
259: 1;
260: __END__
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