File:  [LON-CAPA] / loncom / interface / lonannounce.pm
Revision 1.68: download - view: text, annotated - select for diffs
Thu May 10 18:49:39 2007 UTC (17 years, 1 month ago) by albertel
Branches: MAIN
CVS tags: HEAD
- make parms show up in cal again

    1: # The LearningOnline Network
    2: # Announce
    3: #
    4: # $Id: lonannounce.pm,v 1.68 2007/05/10 18:49:39 albertel 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: use Apache::lonlocal;
   36: use Apache::lonnavmaps();
   37: use Apache::lonrss();
   38: use Apache::lonnet;
   39: use HTML::Entities();
   40: use LONCAPA qw(:match);
   41: 
   42: my %todayhash;
   43: my %showedcheck;
   44: 
   45: sub editfield {
   46:     my ($r,$start,$end,$text)=@_;
   47:     # Deal with date forms
   48:     my $startdateform = &Apache::lonhtmlcommon::date_setter('anno',
   49:                                                             'startdate',
   50:                                                             $start);
   51:     my $enddateform = &Apache::lonhtmlcommon::date_setter('anno',
   52:                                                           'enddate',
   53:                                                           $end);
   54:     my $help=&Apache::loncommon::help_open_menu('Calendar Add Announcement','Calendar_Add_Announcement',274,'Communication Tools');
   55:     my %lt=&Apache::lonlocal::texthash('post' => 'Post Announcement',
   56: 				       'start' => 'Starting date',
   57: 				       'end' => 'Ending date',
   58: 				       'incrss' => 'Include in course RSS newsfeed');
   59: 
   60:     $r->print(<<ENDFORM);
   61: $help
   62: <form name="anno" method="post">
   63: <input type="hidden" value='' name="action" />
   64: <table><tr><td>$lt{'start'}:</td><td>$startdateform</td></tr>
   65: <tr><td>$lt{'end'}:</td><td>$enddateform</td></tr></table>
   66: <textarea name="msg" rows="4" cols="60">$text</textarea>
   67: <br />
   68: <label><input type="checkbox" name="rsspost" /> $lt{'incrss'}</label>
   69: <br /><input type="button" onClick="trysubmit()" value="$lt{'post'}" /><hr />
   70: ENDFORM
   71: }
   72: 
   73: sub readcalendar {
   74:     my $courseid=shift;
   75:     my $coursenum=$env{'course.'.$courseid.'.num'};
   76:     my $coursedom=$env{'course.'.$courseid.'.domain'};
   77:     my %thiscal=&Apache::lonnet::dump('calendar',$coursedom,$coursenum);
   78:     my %returnhash=();
   79:     foreach my $item (keys(%thiscal)) {
   80:         unless (($item=~/^error\:/) || ($thiscal{$item}=~/^error\:/)) {
   81: 	    my ($start,$end)=split('_',$item);
   82: 	    $returnhash{join("\0",$courseid,$start,$end)}=$thiscal{$item};
   83:         }
   84:     }
   85:     my $can_see_hidden = ($env{'request.role.adv'} &&
   86: 			  ($courseid eq $env{'request.course.id'}));
   87:     
   88:     my $navmap;
   89:     if ($courseid eq $env{'request.course.id'}) {
   90: 	$navmap = Apache::lonnavmaps::navmap->new();
   91:     }
   92: 
   93:     my $resourcedata=
   94: 	&Apache::lonnet::get_courseresdata($coursenum,$coursedom);
   95:     foreach my $thiskey (keys(%$resourcedata)) {
   96: 	if ($resourcedata->{$thiskey.'.type'}=~/^date/) {
   97: 	    my ($course,$middle,$part,$name)=
   98: 		($thiskey=~/^(\Q$courseid\E)\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
   99: 
  100: 	    my %data = ( 'section' => &mt('All Students'));
  101: 	    if ($middle=~/^\[(.*)\]\./) {
  102: 		my $sec=$1;
  103: 		# if we have a section don't show ones that aren't ours
  104: 		if ($env{'request.course.sec'} &&
  105: 		    $env{'request.course.sec'} ne $sec) { next; }
  106: 		# if a student without a section don't show any section ones
  107: 		if (!$env{'request.role.adv'} &&
  108: 		    !$env{'request.course.sec'}) { next; }
  109: 		$data{'section'}=&mt('Group/Section').': '.$1;
  110: 		$middle=~s/^\[(.*)\]\.//;
  111: 	    }
  112: 	    $middle=~s/\.$//;
  113: 	    $data{'realm'}=&mt('All Resources');
  114: 	    if ($middle eq '___(all)') {
  115: 		if (!$can_see_hidden && !$navmap) {
  116: 		    next;
  117: 		}
  118: 	    } elsif ($middle=~/^(.+)\_\_\_\(all\)$/) {
  119: 		my $map_url=$1;
  120: 		if (!$can_see_hidden && !$navmap) {
  121: 		    next;
  122: 		}
  123: 		if (!$can_see_hidden) {
  124: 		    my $res = $navmap->getResourceByUrl($map_url);
  125: 		    if ($res && $res->randomout()) {
  126: 			next;
  127: 		    }
  128: 		}
  129: 		$data{'realm'}=&mt('Folder/Map');
  130: 		$data{'url'} = $map_url;
  131: 	    } elsif ($middle) {
  132: 		if (!$can_see_hidden && !$navmap) {
  133: 		    next;
  134: 		}
  135: 		if (!$can_see_hidden) {
  136: 		    my $res = $navmap->getBySymb($middle);
  137: 		    if ($res && $res->randomout()) {
  138: 			next;
  139: 		    }
  140: 		}
  141: 		$data{'realm'} = &mt('Resource');
  142: 		$data{'symb'} = $middle;
  143: 	    }
  144: 	    $data{'datetype'} = $name;
  145: 	    if ($name eq 'duedate') { 
  146: 		$data{'datetype'} = &mt('Due'); 
  147: # see if accidentally answerdate is before duedate
  148: 		my $answerkey=$thiskey;
  149: 		$answerkey=~s/duedate$/answerdate/;
  150: 		if ($resourcedata->{$thiskey}>$resourcedata->{$answerkey}) {
  151: 		    $data{'datetype'} = &mt('Due and Answer Available');
  152: 		}
  153: 	    }
  154: 	    if ($name eq 'opendate' 
  155: 		|| $name eq 'contentopen' ) {
  156: 		$data{'datetype'}=&mt('Opening');
  157: 	    }
  158: 	    if ($name eq 'contentclose') {
  159: 		$data{'datetype'}=&mt('Closing');
  160: 	    }
  161: 	    if ($name eq 'answerdate') {
  162: # see if accidentally answerdate is before duedate
  163: 		my $duekey=$thiskey;
  164: 		$duekey=~s/answerdate$/duedate/;
  165: 		if ($resourcedata->{$duekey}>$resourcedata->{$thiskey}) {
  166: # forget it
  167: 		    next;
  168: 		} 
  169: 		$data{'datetype'}=&mt('Answer Available'); 
  170: 	    }
  171: 	    $returnhash{join("\0",$courseid,
  172: 			     $resourcedata->{$thiskey},
  173: 			     $resourcedata->{$thiskey})}=\%data;
  174: 	}
  175:     }
  176:     return %returnhash;
  177: }
  178: 
  179: sub emptycell {
  180:     return '<td class="LC_calendar_day_empty">&nbsp;</td>';
  181: }
  182: 
  183: sub normalcell {
  184:     my ($day,$month,$year,$items_ref)=@_;
  185:     my $output;
  186:     my @items=&order($items_ref);
  187:     foreach my $item (@items) {
  188:         if ($item) {
  189: 	    my ($courseid,$start,$end,$msg)=@$item;
  190: 	    my $internalflag= (ref($msg)) ? 1 : 0;
  191: 	    $msg = &display_msg($msg);
  192:             my $fullmsg=&mt('Calendar Announcement for ').$env{'course.'.$courseid.'.description'}.
  193: 		'\n'.&Apache::lonlocal::locallocaltime($start);
  194: 	    if ($start!=$end) {
  195: 		$fullmsg.=' - '.&Apache::lonlocal::locallocaltime($end);
  196: 	    }
  197: 	    $fullmsg.=':\n'.$msg;
  198: 	    $fullmsg=~s/[\n\r]/\\n/gs;
  199:             $fullmsg=&HTML::Entities::encode($fullmsg,'<>&"\'');
  200:             $fullmsg=~s/&/\\&/g;
  201: 	    my $short_msg = substr($msg,0,20).((length($msg) > 20)?'...':'');
  202: 	    if (defined($output)) { $output.='<br />'; }
  203:             if ($courseid eq $env{'request.course.id'}) {
  204:               if ((&Apache::lonnet::allowed('srm',$env{'request.course.id'}))
  205:                && (!$showedcheck{$start.'_'.$end})
  206: 	       && ($env{'form.pickdate'} ne 'yes')
  207: 	       && (!$internalflag)) {
  208:                $output.='<input type="checkbox" name="remove_'.$start.'_'.
  209: 		   $end.'">';
  210:                $showedcheck{$start.'_'.$end}=1;
  211: 	      }
  212: 	    }
  213:             $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
  214: 	       $short_msg.'</a>';
  215:        }
  216:     }
  217:     return '<td class="LC_calendar_day'.
  218: 	((($day eq $todayhash{'day'}) &&
  219:           ($month eq $todayhash{'month'}) &&
  220:           ($year eq $todayhash{'year'}))?'_current':'').
  221:            '" ><b>'.&picklink($day,$day,$month,$year).'</b><br />'.$output.'</td>';
  222: }
  223: 
  224: sub plaincell {
  225:     my ($items_ref)=@_;
  226:     my $output;
  227:     my @items=&order($items_ref);
  228:     foreach my $item (@items) {
  229:         if (ref($item)) {
  230: 	    my ($courseid,$start,$end,$msg)=@$item;
  231:             my $fullmsg=&mt('Calendar Announcement for ').$env{'course.'.$courseid.'.description'}.
  232: 		'\n'.&Apache::lonlocal::locallocaltime($start);
  233: 	    if ($start!=$end) {
  234: 		$fullmsg.=' - '.&Apache::lonlocal::locallocaltime($end);
  235: 	    }
  236: 	    $msg = &display_msg($msg);
  237: 	    $fullmsg.=':\n'.$msg;
  238:  	    $fullmsg=~s/[\n\r]/\\n/gs;
  239:             $fullmsg=&HTML::Entities::encode($fullmsg,'<>&"\'');
  240:             $fullmsg=~s/&/\\&/g;
  241: 	    my $short_msg = substr($msg,0,80).((length($msg) > 80)?'...':'');
  242: 	    if (defined($output)) { $output.='<br />'; }
  243:             $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
  244: 	       $short_msg.'</a>';
  245:        }
  246:     }
  247:     return $output;
  248: }
  249: 
  250: sub listcell {
  251:     my ($items_ref)=@_;
  252:     my $output='';
  253:     my @items=&order($items_ref);
  254:     foreach my $item (@items) {
  255:         if (ref($item)) {
  256: 	    my ($courseid,$start,$end,$msg)=@$item;
  257: 	    my $fullmsg=&Apache::lonlocal::locallocaltime($start);
  258: 	    if ($start!=$end) {
  259: 		$fullmsg.=&mt(' to ').
  260: 		    &Apache::lonlocal::locallocaltime($end);
  261: 	    }
  262:             $fullmsg.=':<br /><b>'.&display_msg($msg).'</b>';
  263:             $output.='<li>'.$fullmsg.'</li>';
  264:        }
  265:     }
  266:     return $output;
  267: }
  268: 
  269: sub order {
  270:     my ($items)=@_;
  271:     return sort {
  272: 	my ($astart,$aend)=$a->[1,2];
  273: 	my ($bstart,$bend)=$b->[1,2];
  274: 	if ($astart != $bstart) {
  275: 	    return $astart <=> $bstart;
  276: 	}
  277: 	return $aend <=> $bend;
  278:     } @$items;
  279: }
  280: 
  281: sub nextday {
  282:     my %th=@_;
  283:     $th{'day'}++;
  284:     return (&Apache::loncommon::maketime(%th),$th{'month'});
  285: }
  286: 
  287: sub display_msg {
  288:     my ($msg) = @_;
  289: 
  290:     # if it's not a ref, it's an instructor provided message
  291:     return $msg if (!ref($msg));
  292: 
  293:     my $output = $msg->{'datetype'}. ': '.$msg->{'realm'};
  294:     if (exists($msg->{'url'})) {
  295: 	my $displayurl=&Apache::lonnet::gettitle($msg->{'url'});
  296: 	if ($msg->{'url'}!~/\Q$displayurl\E$/) {
  297: 	    $output .= ' - '.$displayurl;
  298: 	}
  299:     }
  300:     if (exists($msg->{'symb'})) {
  301: 	my $displaysymb=&Apache::lonnet::gettitle($msg->{'symb'});
  302: 	if ($msg->{'symb'}!~/\Q$displaysymb\E$/) {
  303: 	    $output .= ' - '.$displaysymb;
  304: 	}
  305:     }
  306:     $output .= ' ('.$msg->{'section'}.') ';
  307:     return $output;
  308: }
  309: 
  310: sub showday {
  311:     my ($tk,$mode,%allcal)=@_;
  312:     my %th=&Apache::loncommon::timehash($tk);
  313:     my ($nextday,$nextmonth)=&nextday(%th);
  314:     my @outp;
  315:     if ($mode) {
  316: 	my $oneday=24*3600;
  317: 	$tk-=$oneday;
  318: 	$nextday+=$oneday;
  319:     }
  320:     foreach my $item (keys(%allcal)) {
  321: 	my ($courseid,$startdate,$enddate)= split("\0",$item);
  322: 	if (($startdate<$nextday) && ($enddate>=$tk))  {
  323: 	    push(@outp,[$courseid,$startdate,$enddate,$allcal{$item}]);
  324:         }
  325:     }
  326:     unless ($mode) {
  327:        return ($nextday,$nextmonth,&normalcell(
  328:                $th{'day'},$th{'month'},$th{'year'},\@outp));
  329:    } elsif (@outp) {
  330:        if ($mode==1) {
  331:           return '<br />'.&plaincell(\@outp);
  332:       } else {
  333:           return '<ul>'.&listcell(\@outp).'</ul>';
  334:       }
  335:    } else {
  336:        return '';
  337:    }
  338: }
  339: 
  340: sub picklink {
  341:     my ($text,$day,$month,$year)=@_;
  342:     if ($env{'form.pickdate'} eq 'yes') {
  343: 	return '<a href="javascript:dialin('.$day.','.$month.','.$year.')">'.
  344: 	    $text.'</a>';
  345:     } else {
  346: 	return $text;
  347:     }
  348: }
  349: 
  350: sub dialscript {
  351:     return (<<ENDDIA);
  352: <script language="Javascript">
  353: function dialin(day,month,year) {
  354: 	opener.document.$env{'form.formname'}.$env{'form.element'}\_year.value=year;
  355:     var slct=opener.document.$env{'form.formname'}.$env{'form.element'}\_month;
  356:     var i;
  357:     for (i=0;i<slct.length;i++) {
  358:         if (slct.options[i].value==month) { slct.selectedIndex=i; }
  359:     }
  360:     opener.document.$env{'form.formname'}.$env{'form.element'}\_day.value=day;
  361:     opener.$env{'form.element'}\_checkday();
  362:     self.close();
  363: }
  364: </script>
  365: ENDDIA
  366: }
  367: # ----------------------------------------------------- Summarize all calendars
  368: sub get_all_calendars {
  369:     my %allcal=();
  370:     my %courses = &Apache::loncommon::findallcourses();
  371:     foreach my $course (sort(keys(%courses))) {
  372: 	%allcal=(%allcal,&readcalendar($course));
  373:     }
  374:     return %allcal;
  375: }
  376: 
  377: sub output_ics_file {
  378:     my ($r)=@_;
  379: # RFC 2445 wants CRLF
  380:     my $crlf="\015\012";
  381: # Header
  382:     $r->print("BEGIN:VCALENDAR$crlf");
  383:     $r->print("VERSION:2.0$crlf");
  384:     $r->print("PRODID:-//LONCAPA//LONCAPA Calendar Output//EN$crlf");
  385:     my %allcal=&get_all_calendars();
  386:     foreach my $event (keys(%allcal)) {
  387: 	my ($courseid,$startdate,$enddate)= split('\0',$event);
  388: 	my $uid=$event;
  389: 	$uid=~s/[\W\_]/-/gs;
  390: 	$uid.='@loncapa';
  391: 	my $summary=&display_msg($allcal{$event});
  392: 	$summary=~s/\s+/ /gs;
  393:         $summary=$env{'course.'.$courseid.'.description'}.': '.$summary;
  394: 	$r->print("BEGIN:VEVENT$crlf");
  395: 	$r->print("DTSTART:".&Apache::loncommon::utc_string($startdate).$crlf);
  396: 	$r->print("DTEND:".&Apache::loncommon::utc_string($enddate).$crlf);
  397: 	$r->print("SUMMARY:$summary$crlf");
  398: 	$r->print("UID:$uid$crlf");
  399: 	$r->print("END:VEVENT$crlf");
  400:     }
  401: # Footer
  402:     $r->print("END:VCALENDAR$crlf");
  403: }
  404: 
  405: sub handler {
  406:     my $r = shift;
  407:     if ($r->uri=~/\.(ics|ical)$/) {
  408:         &Apache::loncommon::content_type($r,'text/calendar');
  409: 	&output_ics_file($r);
  410: 	return OK;
  411:     }
  412:     &Apache::loncommon::content_type($r,'text/html');
  413:     $r->send_http_header;
  414:     return OK if $r->header_only;
  415: 
  416: # ---------------------------------------------------------- Get time right now
  417:     my $today=time;
  418:     %todayhash=&Apache::loncommon::timehash($today);
  419: # ----------------------------------------------------------------- Check marks
  420:     undef(%showedcheck);
  421: # ---------------------------------------------------------- Get month and year
  422:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
  423:                              ['month','year','pickdate','formname','element']);
  424: # --------------------------------------------------- Decide what month to show
  425:     my $year=$todayhash{'year'};
  426:     if ($env{'form.year'}) { $year=$env{'form.year'}; }
  427:     my $month=$todayhash{'month'};
  428:     if ($env{'form.month'}) { $month=$env{'form.month'}; }
  429: 
  430: # ---------------------------------------------- See if we are in pickdate mode
  431:     my $pickdatemode=($env{'form.pickdate'} eq 'yes');
  432:     my $pickinfo='&pickdate=yes&formname='.$env{'form.formname'}.
  433: 	'&element='.$env{'form.element'};
  434: # --------------------------------------------- Find out first day of the month
  435: 
  436:     my %firstday=&Apache::loncommon::timehash(
  437:        &Apache::loncommon::maketime( 'day' => 1, 'month'=> $month,
  438:                                      'year' => $year, 'hours' => 0,
  439: 				     'minutes' => 0, 'seconds' => 0,
  440:                                      'dlsav' => -1 ));
  441:     my $weekday=$firstday{'weekday'};
  442: # ------------------------------------------------------------ Print the screen
  443:     my $js = <<ENDDOCUMENT;
  444: <script type="text/javascript">
  445: 
  446:     function trysubmit() {
  447:         document.anno.action.value="new";
  448: 	document.anno.submit();
  449:     }
  450: 
  451:     function removesub() {
  452:         document.anno.action.value="del";
  453: 	document.anno.submit();
  454:     }
  455: </script>
  456: ENDDOCUMENT
  457: 
  458:     if ($pickdatemode) {
  459: # no big header in pickdate mode
  460: 	$r->print(&Apache::loncommon::start_page("Pick a Date",$js,
  461: 						 {'only_body' => 1,}).
  462: 		  &dialscript().
  463: 		  '<font size="1">');
  464:     } else {
  465:        $r->print(&Apache::loncommon::start_page("Announcements and Calendar",
  466: 						$js));
  467:     }
  468: # does this user have privileges to post, etc?
  469:     my $allowed=0;
  470:     if ($env{'request.course.id'}) {
  471:        $allowed=&Apache::lonnet::allowed('srm',$env{'request.course.id'});
  472:     }
  473: # does this user have privileges to post to servers?
  474:     my $serverpost=0;
  475:     if ($env{'request.role.domain'}) {
  476: 	$serverpost=&Apache::lonnet::allowed('psa',
  477: 					     $env{'request.role.domain'});
  478:     } else {
  479: 	$serverpost=&Apache::lonnet::allowed('psa','/');
  480:     }
  481: # -------------------------------- BUT: do no fancy stuff when in pickdate mode
  482:     if ($pickdatemode) { 
  483: 	$serverpost=0; 
  484: 	$allowed=0;
  485:     }
  486: # ------------------------------------------------------------ Process commands
  487:     if ($serverpost) {
  488: 	if ($env{'form.serveraction'}) {
  489: 	    foreach my $key (keys(%env)) {
  490: 		if ($key=~/^form\.postto\_(\w+)/) {
  491: 		    $r->print( 
  492: 			'<br />Posting '.$1.': '.&Apache::lonnet::postannounce
  493: 			($1,$env{'form.serverannnounce'}));
  494: 		}
  495: 	    }
  496: 	}
  497: 	$r->print(<<SERVERANNOUNCE);
  498: <form name="serveranno" method="post">
  499: <h3>Post Server Announcements</h3>
  500: Post announcements to the system login and roles screen<br />
  501: <i>(leave blank to delete announcement)</i><br />
  502: <textarea name="serverannnounce" cols="60" rows="5"></textarea><br />
  503: Check machines:<br />
  504: SERVERANNOUNCE
  505: # list servers
  506:     my %hostname = &Apache::lonnet::all_hostnames();
  507:     foreach my $host (sort(keys(%hostname))) {
  508: 	if (&Apache::lonnet::allowed('psa',
  509: 				     &Apache::lonnet::host_domain($host))) {
  510: 	    $r->print ('<br /><label><input type="checkbox" name="postto_'.$host.'" /> '.
  511: 		       $host.' <tt>'.$hostname{$host}.'</tt> '.
  512: 		       '</label><a href="http://'.$hostname{$host}.
  513: 		       '/announcement.txt" target="annowin">current</a>');
  514: 	}
  515:     }
  516:     $r->print(
  517:   '<br /><input type="submit" name="serveraction" value="Post"></form><hr />');
  518:     }
  519:     if ($allowed) {
  520:         my $coursenum=$env{'course.'.$env{'request.course.id'}.'.num'};
  521:         my $coursedom=$env{'course.'.$env{'request.course.id'}.'.domain'};
  522: # ----------------------------------------------------- Store new submitted one
  523:         if ($env{'form.action'} eq 'new') {
  524: 	    my $startdate = 
  525: 		&Apache::lonhtmlcommon::get_date_from_form('startdate');
  526: 	    my $enddate   = 
  527: 		&Apache::lonhtmlcommon::get_date_from_form('enddate');
  528: 	    unless ($startdate=~/^\d+$/) { $startdate=time; }
  529:             unless ($enddate=~/^\d+$/) { $enddate=$startdate+1; }
  530:             if ($startdate>$enddate) {
  531: 		my $buffer=$startdate;
  532: 		$startdate=$enddate;
  533: 		$enddate=$buffer;
  534:             }
  535: 	    &Apache::lonnet::put('calendar',{ 
  536: 		$startdate.'_'.$enddate => 
  537: 		    $env{'form.msg'} },$coursedom,$coursenum);
  538: 	    if ($env{'form.rsspost'}) {
  539:                &Apache::lonrss::addentry($coursenum,$coursedom,'Course_Announcements',
  540: 					 &mt('Event from [_1] to [_2]',
  541: 					     &Apache::lonlocal::locallocaltime($startdate),
  542: 					     &Apache::lonlocal::locallocaltime($enddate)),
  543: 					 $env{'form.msg'},'/adm/announcements','public');
  544: 	   }
  545:         }
  546: # ---------------------------------------------------------------- Remove items
  547:         if ($env{'form.action'} eq 'del') {
  548: 	    my @delwhich=();
  549:             foreach my $key (keys(%env)) {
  550: 		if ($key=~/^form\.remove\_(.+)$/) {
  551: 		    push(@delwhich,$1);
  552:                 }
  553:             }
  554:             &Apache::lonnet::del('calendar',\@delwhich,$coursedom,$coursenum);
  555:         }
  556: # -------------------------------------------------------- Form to post new one
  557:         my %tomorrowhash=%todayhash;
  558:         $tomorrowhash{'day'}++;
  559:         my $tomorrow=&Apache::loncommon::maketime(%tomorrowhash);
  560:         
  561:         &editfield($r,$today,$tomorrow,'');
  562:     }
  563: # ----------------------------------------------------- Summarize all calendars
  564:     my %allcal=&get_all_calendars();
  565: # ------------------------------- Initialize table and forward backward buttons
  566:     my ($pm,$py,$fm,$fy)=($month-1,$year,$month+1,$year);
  567:     if ($pm<1) { ($pm,$py)=(12,$year-1); }
  568:     if ($fm>12){ ($fm,$fy)=(1,$year+1); }
  569: 
  570:     $r->print('<h1>'.('',&mt('January'),&mt('February'),&mt('March'),
  571: 		      &mt('April'),&mt('May'),
  572: 		      &mt('June'),&mt('July'),&mt('August'),
  573:                       &mt('September'),&mt('October'),
  574:                       &mt('November'),&mt('December'))[$month].' '.
  575: 	              $year.'</h1>');
  576: # Reached the end of times, give up
  577:     if (($year<1970) || ($year>2037)) {
  578: 	$r->print('<h3>No calendar available for this date.</h3>'.
  579:  '<a href="/adm/announcements?month='.$todayhash{'month'}.
  580:  '&year='.$todayhash{'year'}.'">Current Month</a>'.
  581: 		  &Apache::loncommon::end_page());
  582: 	return OK;
  583:     }
  584: 
  585:     my $class = "LC_calendar";
  586:     if ($env{'form.pickdate'} eq 'yes') {
  587: 	$class .= " LC_calendar_pickdate";
  588:     }
  589:     $r->print(
  590:  '<a href="/adm/announcements?month='.$pm.'&year='.$py.
  591:  ($pickdatemode?$pickinfo:'').'">'.&mt('Previous Month').'</a> '.
  592:  '<a href="/adm/announcements?month='.$fm.'&year='.$fy.
  593:  ($pickdatemode?$pickinfo:'').'">'.&mt('Next Month').'</a>'.
  594:  '&nbsp;&nbsp;&nbsp;<a href="/adm/announcements?month='.$todayhash{'month'}.
  595:  '&year='.$todayhash{'year'}.
  596:  ($pickdatemode?$pickinfo:'').'">'.&mt('Current Month').'</a><p>'.
  597:         '<table class="'.$class.'" cols="7" rows="5"><tr>
  598: <th>'.&mt('Sun').'</th>
  599: <th>'.&mt('Mon').'</th>
  600: <th>'.&mt('Tue').'</th>
  601: <th>'.&mt('Wed').'</th>
  602: <th>'.&mt('Thu').'</th>
  603: <th>'.&mt('Fri').'</th>
  604: <th>'.&mt('Sat').'</th></tr>');
  605: 
  606:     my $tk=&Apache::loncommon::maketime(%firstday);
  607:     my $outp;
  608:     my $nm;
  609: 
  610: # ---------------------------------------------------------------- Actual table
  611:     $r->print('<tr>');
  612:     for (my $i=0;$i<$weekday;$i++) { $r->print(&emptycell); }
  613:     for (my $i=$weekday;$i<=6;$i++) { 
  614:         ($tk,$nm,$outp)=&showday($tk,0,%allcal);
  615:         $r->print($outp);
  616:     }
  617:     $r->print('</tr>');
  618: 
  619:     for (my $k=0;$k<=4;$k++) {
  620:         $r->print('<tr>');
  621:         for (my $i=0;$i<=6;$i++) {
  622:             ($tk,$nm,$outp)=&showday($tk,0,%allcal);
  623:             if ($month!=$nm) { $outp=&emptycell; }
  624:             $r->print($outp);
  625:         }
  626:         $r->print('</tr>');
  627:     }
  628: # ------------------------------------------------------------------- End table
  629:     $r->print('</table>');
  630: # ----------------------------------------------------------------- Check marks
  631:     undef(%showedcheck);
  632: # --------------------------------------------------------------- Remove button
  633:     if ($allowed) { $r->print('<input type="button" onClick="removesub()" value="Remove Checked Entries">'.
  634: 			      &Apache::loncommon::help_open_topic('Calendar_Remove_Announcement').'</form>'); }
  635:     $r->print('<p>'.
  636:  '<a href="/adm/announcements?month='.$pm.'&year='.$py.
  637:  ($pickdatemode?$pickinfo:'').'">'.&mt('Previous Month').'</a> '.
  638:  '<a href="/adm/announcements?month='.$fm.'&year='.$fy.
  639:  ($pickdatemode?$pickinfo:'').'">'.&mt('Next Month').'</a>'.
  640:  '&nbsp;&nbsp;&nbsp;<a href="/adm/announcements?month='.$todayhash{'month'}.
  641:  '&year='.$todayhash{'year'}.
  642:  ($pickdatemode?$pickinfo:'').'">'.&mt('Current Month').'</a></p>'.
  643:  ($pickdatemode?'</font>':'').&Apache::loncommon::end_page());
  644:     $r->print('<a href="/adm/announcements.ics">'.&mt('Download your Calendar as iCalendar File').'</a>');
  645:     return OK;
  646: } 
  647: 
  648: 1;
  649: __END__

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