# The LearningOnline Network
# Announce
#
# $Id: lonannounce.pm,v 1.13 2003/06/18 15:02:20 www 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::lonannounce;
use strict;
use Apache::Constants qw(:common);
use Apache::loncommon;
use Apache::lonhtmlcommon();
my %todayhash;
sub editfield {
my ($r,$start,$end,$text)=@_;
# Deal with date forms
my $startdateform = &Apache::lonhtmlcommon::date_setter('anno',
'startdate',
$start);
my $enddateform = &Apache::lonhtmlcommon::date_setter('anno',
'enddate',
$end);
$r->print(<<ENDFORM);
<form name="anno" method="post">
<input type="hidden" value='' name="action" >
<table><tr><td>Starting date:</td><td>$startdateform</td></tr>
<tr><td>Ending date:</td><td>$enddateform</td></tr></table>
<textarea name="msg" rows="4" cols="60">$text</textarea>
<input type="button" onClick="trysubmit()" value="Post Announcement"><hr>
ENDFORM
}
sub readcalendar {
my $courseid=shift;
my $coursenum=$ENV{'course.'.$courseid.'.num'};
my $coursedom=$ENV{'course.'.$courseid.'.domain'};
my %thiscal=&Apache::lonnet::dump('calendar',$coursedom,$coursenum);
my %returnhash=();
foreach (keys %thiscal) {
unless (($_=~/^error\:/) || ($thiscal{$_}=~/^error\:/)) {
$returnhash{$courseid.'@'.$_}=$thiscal{$_};
}
}
return %returnhash;
}
sub emptycell {
return '<td bgcolor="#AAAAAA"> </td>';
}
sub normalcell {
my ($day,$month,$year,$text)=@_;
my $output='';
foreach (split(/\_\_\_\&\&\&\_\_\_/,$text)) {
if ($_) {
my ($courseid,$start,$end,@msg)=split(/\@/,$_);
my $msg=join('@',@msg);
my $fullmsg=$ENV{'course.'.$courseid.'.description'}.
', '.localtime($start).' - '.localtime($end).': '.$msg;
if ($courseid eq $ENV{'request.course.id'}) {
if (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
$output.='<input type="checkbox" name="remove_'.$start.'_'.
$end.'">';
}
}
$output.='<a href="javascript:alert('."'$fullmsg'".')">'.
substr($msg,0,20).'...</a><br />';
}
}
return '<td'.
((($day eq $todayhash{'day'}) &&
($month eq $todayhash{'month'}) &&
($year eq $todayhash{'year'}))?' bgcolor="#FFFF00"':'').
'><b>'.$day.'</b><br>'.$output.'</td>';
}
sub plaincell {
my ($text)=@_;
my $output='';
foreach (split(/\_\_\_\&\&\&\_\_\_/,$text)) {
if ($_) {
my ($courseid,$start,$end,@msg)=split(/\@/,$_);
my $msg=join('@',@msg);
my $fullmsg=$ENV{'course.'.$courseid.'.description'}.
', '.localtime($start).' - '.localtime($end).': '.$msg;
$output.='<a href="javascript:alert('."'$fullmsg'".')">'.
substr($msg,0,40).'...</a><br />';
}
}
return $output;
}
sub listcell {
my ($text)=@_;
my $output='';
foreach (split(/\_\_\_\&\&\&\_\_\_/,$text)) {
if ($_) {
my ($courseid,$start,$end,@msg)=split(/\@/,$_);
my $msg=join('@',@msg);
my $fullmsg=localtime($start).' to '.localtime($end).':<br /><b>'.
$msg.'</b>';
$output.='<li>'.$fullmsg.'</li>';
}
}
return $output;
}
sub nextday {
my %th=@_;
$th{'day'}++;
return (&Apache::loncommon::maketime(%th),$th{'month'});
}
sub showday {
my ($tk,$mode,%allcal)=@_;
my %th=&Apache::loncommon::timehash($tk);
my ($nextday,$nextmonth)=&nextday(%th);
my $outp='';
my $oneday=24*3600;
foreach (keys %allcal) {
my ($course,$startdate,$enddate)=($_=~/^(\w+)\@(\d+)\_(\d+)$/);
if (($startdate<$nextday) && ($enddate>$tk)) {
$outp.='___&&&___'.$course.'@'.$startdate.'@'.$enddate.'@'.
$allcal{$_};
}
}
unless ($mode) {
return ($nextday,$nextmonth,&normalcell(
$th{'day'},$th{'month'},$th{'year'},$outp));
} elsif ($outp) {
if ($mode==1) {
return '<br />'.&plaincell($outp);
} else {
return '<ul>'.&listcell($outp).'</ul>';
}
} else {
return '';
}
}
sub handler {
my $r = shift;
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
# ---------------------------------------------------------- Get time right now
my $today=time;
%todayhash=&Apache::loncommon::timehash($today);
# ---------------------------------------------------------- Get month and year
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['month','year']);
# --------------------------------------------------- Decide what month to show
my $year=$todayhash{'year'};
if ($ENV{'form.year'}) { $year=$ENV{'form.year'}; }
my $month=$todayhash{'month'};
if ($ENV{'form.month'}) { $month=$ENV{'form.month'}; }
# --------------------------------------------- Find out first day of the month
my %firstday=&Apache::loncommon::timehash(
&Apache::loncommon::maketime( 'day' => 1, 'month'=> $month,
'year' => $year, 'hours' => 0,
'minutes' => 0, 'seconds' => 0,
'dlsav' => $todayhash{'dlsav'} ));
my $weekday=$firstday{'weekday'};
# ------------------------------------------------------------ Print the screen
$r->print(<<ENDDOCUMENT);
<html>
<head>
<title>The LearningOnline Network with CAPA</title>
<script>
function trysubmit() {
document.anno.action.value="new";
document.anno.submit();
}
function removesub() {
document.anno.action.value="del";
document.anno.submit();
}
</script>
</head>
ENDDOCUMENT
$r->print(&Apache::loncommon::bodytag("Announcements and Calendar"));
# does this user have privileges to post, etc?
my $allowed=0;
if ($ENV{'request.course.id'}) {
$allowed=&Apache::lonnet::allowed('srm',$ENV{'request.course.id'});
}
if ($allowed) {
my $coursenum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
my $coursedom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
# ----------------------------------------------------- Store new submitted one
if ($ENV{'form.action'} eq 'new') {
my $startdate =
&Apache::lonhtmlcommon::get_date_from_form('startdate');
my $enddate =
&Apache::lonhtmlcommon::get_date_from_form('enddate');
unless ($startdate=~/^\d+$/) { $startdate=time; }
unless ($enddate=~/^\d+$/) { $enddate=$startdate+1; }
if ($startdate>$enddate) {
my $buffer=$startdate;
$startdate=$enddate;
$enddate=$buffer;
}
&Apache::lonnet::put('calendar',{
$startdate.'_'.$enddate =>
$ENV{'form.msg'} },$coursedom,$coursenum);
}
# ---------------------------------------------------------------- Remove items
if ($ENV{'form.action'} eq 'del') {
my @delwhich=();
foreach (keys %ENV) {
if ($_=~/^form\.remove\_(.+)$/) {
push(@delwhich,$1);
}
}
&Apache::lonnet::del('calendar',\@delwhich,$coursedom,$coursenum);
}
# -------------------------------------------------------- Form to post new one
my %tomorrowhash=%todayhash;
$tomorrowhash{'day'}++;
my $tomorrow=&Apache::loncommon::maketime(%tomorrowhash);
&editfield($r,$today,$tomorrow,'');
}
# ----------------------------------------------------- Summarize all calendars
my %allcal=();
foreach (&Apache::loncommon::findallcourses()) {
%allcal=(%allcal,&readcalendar($_));
}
# ------------------------------- Initialize table and forward backward buttons
my ($pm,$py,$fm,$fy)=($month-1,$year,$month+1,$year);
if ($pm<1) { ($pm,$py)=(12,$year-1); }
if ($fm>12){ ($fm,$fy)=(1,$year+1); }
if (($year<1970) || ($year>2037)) {
}
$r->print('<h1>'.('','January','February','March','April','May',
'June','July','August','September','October',
'November','December')[$month].' '.$year.'</h1>');
# Reached the end of times, give up
if (($year<1970) || ($year>2037)) {
$r->print('<h3>No calendar available for this date.</h3>'.
'<a href="/adm/announcements?month='.$todayhash{'month'}.
'&year='.$todayhash{'year'}.'">Current Month</a></body></html>');
return OK;
}
$r->print(
'<a href="/adm/announcements?month='.$pm.'&year='.$py.'">Previous Month</a> '.
'<a href="/adm/announcements?month='.$fm.'&year='.$fy.'">Next Month</a>'.
' <a href="/adm/announcements?month='.$todayhash{'month'}.
'&year='.$todayhash{'year'}.'">Current Month</a><p>'.
'<table border="2" cols="7" rows="5"><tr><th>Sun</th><th>Mon</th>'.
'<th>Tue</th><th>Wed</th><th>Thu</th><th>Fri</th><th>Sat</th></tr>');
my $tk=&Apache::loncommon::maketime(%firstday);
my $outp;
my $nm;
# ---------------------------------------------------------------- Actual table
$r->print('<tr>');
for (my $i=0;$i<$weekday;$i++) { $r->print(&emptycell); }
for (my $i=$weekday;$i<=6;$i++) {
($tk,$nm,$outp)=&showday($tk,0,%allcal);
$r->print($outp);
}
$r->print('</tr>');
for (my $k=0;$k<=3;$k++) {
$r->print('<tr>');
for (my $i=0;$i<=6;$i++) {
($tk,$nm,$outp)=&showday($tk,0,%allcal);
if ($month!=$nm) { $outp=&emptycell; }
$r->print($outp);
}
$r->print('</tr>');
}
# ------------------------------------------------------------------- End table
$r->print('</table>');
if ($allowed) { $r->print('<input type="button" onClick="removesub()" value="Remove Checked Entries"></form>'); }
$r->print('<p>'.
'<a href="/adm/announcements?month='.$pm.'&year='.$py.'">Previous Month</a> '.
'<a href="/adm/announcements?month='.$fm.'&year='.$fy.'">Next Month</a>'.
' <a href="/adm/announcements?month='.$todayhash{'month'}.
'&year='.$todayhash{'year'}.'">Current Month</a></p>'.
'</body></html>');
return OK;
}
1;
__END__
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