1: # The LearningOnline Network
2: # Announce
3: #
4: # $Id: lonannounce.pm,v 1.8 2003/04/30 15:49:45 matthew 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::lonannounce;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::loncommon;
34: use Apache::lonhtmlcommon();
35:
36: sub readcalendar {
37: my $courseid=shift;
38: my $coursenum=$ENV{'course.'.$courseid.'.num'};
39: my $coursedom=$ENV{'course.'.$courseid.'.domain'};
40: my %thiscal=&Apache::lonnet::dump('calendar',$coursedom,$coursenum);
41: my %returnhash=();
42: foreach (keys %thiscal) {
43: unless (($_=~/^error\:/) || ($thiscal{$_}=~/^error\:/)) {
44: $returnhash{$courseid.'@'.$_}=$thiscal{$_};
45: }
46: }
47: return %returnhash;
48: }
49:
50: sub emptycell {
51: return '<td bgcolor="#AAAAAA"> </td>';
52: }
53:
54: sub normalcell {
55: my ($day,$text)=@_;
56: my $output='';
57: foreach (split(/\_\_\_\&\&\&\_\_\_/,$text)) {
58: if ($_) {
59: my ($courseid,$start,$end,@msg)=split(/\@/,$_);
60: my $msg=join('@',@msg);
61: my $fullmsg=$ENV{'course.'.$courseid.'.description'}.': '.$msg;
62: if ($courseid eq $ENV{'request.course.id'}) {
63: if (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
64: $output.='<input type="checkbox" name="remove_'.$start.'_'.
65: $end.'">';
66: }
67: }
68: $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
69: substr($msg,0,20).'...</a><br>';
70: }
71: }
72: return '<td><b>'.$day.'</b><br>'.$output.'</td>';
73: }
74:
75: sub nextday {
76: my %th=@_;
77: $th{'day'}++;
78: return (&Apache::loncommon::maketime(%th),$th{'month'});
79: }
80:
81: sub showday {
82: my ($tk,%allcal)=@_;
83: my %th=&Apache::loncommon::timehash($tk);
84: my ($nextday,$nextmonth)=&nextday(%th);
85: my $outp='';
86: my $oneday=24*3600;
87: foreach (keys %allcal) {
88: my ($course,$startdate,$enddate)=($_=~/^(\w+)\@(\d+)\_(\d+)$/);
89: if (($startdate<$nextday) && ($enddate>$tk)) {
90: $outp.='___&&&___'.$course.'@'.$startdate.'@'.$enddate.'@'.
91: $allcal{$_};
92: }
93: }
94: return ($nextday,$nextmonth,&normalcell($th{'day'},$outp));
95: }
96:
97: sub handler {
98: my $r = shift;
99: $r->content_type('text/html');
100: $r->send_http_header;
101: return OK if $r->header_only;
102:
103: # ---------------------------------------------------------- Get time right now
104: my $today=time;
105: my %todayhash=&Apache::loncommon::timehash($today);
106:
107: # ---------------------------------------------------------- Get month and year
108: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
109: ['month','year']);
110: # --------------------------------------------------- Decide what month to show
111: my $year=$todayhash{'year'};
112: if ($ENV{'form.year'}) { $year=$ENV{'form.year'}; }
113: my $month=$todayhash{'month'};
114: if ($ENV{'form.month'}) { $month=$ENV{'form.month'}; }
115: # --------------------------------------------- Find out first day of the month
116:
117: my %firstday=&Apache::loncommon::timehash(
118: &Apache::loncommon::maketime( 'day' => 1, 'month'=> $month,
119: 'year' => $year, 'hours' => 0,
120: 'minutes' => 0, 'seconds' => 0,
121: 'dlsav' => $todayhash{'dlsav'} ));
122: my $weekday=$firstday{'weekday'};
123: # ------------------------------------------------------------ Print the screen
124: my $pjump_function = &Apache::lonhtmlcommon::pjump_javascript_definition();
125: $r->print(<<ENDDOCUMENT);
126: <html>
127: <head>
128: <title>The LearningOnline Network with CAPA</title>
129: <script>
130: function pclose() {
131: parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
132: "height=350,width=350,scrollbars=no,menubar=no");
133: parmwin.close();
134: }
135:
136: $pjump_function
137:
138: function dateset() {
139: if (document.anno.pres_marker.value=='end') {
140: document.anno.enddate.value=
141: document.anno.pres_value.value;
142: }
143: if (document.anno.pres_marker.value=='start') {
144: document.anno.startdate.value=
145: document.anno.pres_value.value;
146: }
147: pclose();
148: }
149:
150: function trysubmit() {
151: if (document.anno.startdate.value=='') {
152: alert("Announcements must have a starting date");
153: return '';
154: }
155: if (document.anno.enddate.value=='') {
156: alert("Announcements must have a starting date");
157: return '';
158: }
159: if (document.anno.startdate.value>document.anno.enddate.value) {
160: alert("Starting date is later than ending date");
161: return '';
162: }
163: document.anno.action.value="new";
164: document.anno.submit();
165: }
166:
167: function removesub() {
168: document.anno.action.value="del";
169: document.anno.submit();
170: }
171: </script>
172: </head>
173: ENDDOCUMENT
174: $r->print(&Apache::loncommon::bodytag("Announcements and Calendar"));
175: # does this user have privileges to post, etc?
176: my $allowed=0;
177: if ($ENV{'request.course.id'}) {
178: $allowed=&Apache::lonnet::allowed('srm',$ENV{'request.course.id'});
179: }
180:
181: if ($allowed) {
182: my $coursenum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
183: my $coursedom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
184: # ----------------------------------------------------- Store new submitted one
185: if ($ENV{'form.action'} eq 'new') {
186: &Apache::lonnet::put('calendar',{
187: $ENV{'form.startdate'}.'_'.$ENV{'form.enddate'} =>
188: $ENV{'form.msg'} },$coursedom,$coursenum);
189: }
190: # ---------------------------------------------------------------- Remove items
191: if ($ENV{'form.action'} eq 'del') {
192: my @delwhich=();
193: foreach (keys %ENV) {
194: if ($_=~/^form\.remove\_(.+)$/) {
195: push(@delwhich,$1);
196: }
197: }
198: &Apache::lonnet::del('calendar',\@delwhich,$coursedom,$coursenum);
199: }
200: # -------------------------------------------------------- Form to post new one
201: my %tomorrowhash=%todayhash;
202: $tomorrowhash{'day'}++;
203: my $tomorrow=&Apache::loncommon::maketime(%tomorrowhash);
204:
205: $r->print(<<ENDFORM);
206: <form name="anno" method="post">
207: <input type="hidden" value='' name="action" >
208: <input type="hidden" value='' name="pres_value" >
209: <input type="hidden" value='' name="pres_type" >
210: <input type="hidden" value='' name="pres_marker" >
211: <input type="hidden" value='$today' name="startdate" >
212: <input type="hidden" value='$tomorrow' name="enddate" >
213: <a
214: href="javascript:pjump('date_start','Starting Date',document.anno.startdate.value,'start','anno.pres','dateset');"
215: >Set Starting Date</a>
216: <a
217: href="javascript:pjump('date_end','Ending Date',document.anno.enddate.value,'end','anno.pres','dateset');"
218: >Set Ending Date</a><p>
219: <textarea name="msg" rows="4" cols="60">
220: </textarea>
221: <input type="button" onClick="trysubmit()" value="Post Announcement"><hr>
222: <input type="button" onClick="removesub()" value="Remove Marked"><hr>
223: ENDFORM
224: }
225: # ----------------------------------------------------- Summarize all calendars
226: my %allcal=();
227: foreach (&Apache::loncommon::findallcourses()) {
228: %allcal=(%allcal,&readcalendar($_));
229: }
230:
231: # ------------------------------- Initialize table and forward backward buttons
232: my ($pm,$py,$fm,$fy)=($month-1,$year,$month+1,$year);
233: if ($pm<1) { ($pm,$py)=(12,$year-1); }
234: if ($fm>12){ ($fm,$fy)=(1,$year+1); }
235: $r->print('<h1>'.('','January','February','March','April','May',
236: 'June','July','August','September','October',
237: 'November','December')[$month].' '.$year.'</h1>'.
238: '<a href="/adm/announcements?month='.$pm.'&year='.$py.'">Previous Month</a> '.
239: '<a href="/adm/announcements?month='.$fm.'&year='.$fy.'">Next Month</a><p>'.
240: '<table border="2" cols="7" rows="5"><tr><th>Sun</th><th>Mon</th>'.
241: '<th>Tue</th><th>Wed</th><th>Thu</th><th>Fri</th><th>Sat</th></tr>');
242:
243: my $tk=&Apache::loncommon::maketime(%firstday);
244: my $outp;
245: my $nm;
246:
247: # ---------------------------------------------------------------- Actual table
248: $r->print('<tr>');
249: for (my $i=0;$i<$weekday;$i++) { $r->print(&emptycell); }
250: for (my $i=$weekday;$i<=6;$i++) {
251: ($tk,$nm,$outp)=&showday($tk,%allcal);
252: $r->print($outp);
253: }
254: $r->print('</tr>');
255:
256: for (my $k=0;$k<=3;$k++) {
257: $r->print('<tr>');
258: for (my $i=0;$i<=6;$i++) {
259: ($tk,$nm,$outp)=&showday($tk,%allcal);
260: if ($month!=$nm) { $outp=&emptycell; }
261: $r->print($outp);
262: }
263: $r->print('</tr>');
264: }
265: # ------------------------------------------------------------------- End table
266: $r->print('</table>');
267: if ($allowed) { $r->print('</form>'); }
268: $r->print('<p>'.
269: '<a href="/adm/announcements?month='.$pm.'&year='.$py.'">Previous Month</a> '.
270: '<a href="/adm/announcements?month='.$fm.'&year='.$fy.'">Next Month</a><p>'.
271: '</body></html>');
272: return OK;
273: }
274:
275: 1;
276: __END__
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