File:  [LON-CAPA] / loncom / interface / lonannounce.pm
Revision 1.69: download - view: text, annotated - select for diffs
Tue May 15 18:55:22 2007 UTC (17 years ago) by raeburn
Branches: MAIN
CVS tags: version_2_6_X, version_2_6_3, version_2_6_2, version_2_6_1, version_2_6_0, version_2_5_X, version_2_5_99_1, version_2_5_99_0, version_2_5_2, version_2_5_1, version_2_5_0, version_2_4_X, version_2_4_99_0, version_2_4_2, version_2_4_1, version_2_4_0, version_2_3_99_0, HEAD
Bug 5271.

    1: # The LearningOnline Network
    2: # Announce
    3: #
    4: # $Id: lonannounce.pm,v 1.69 2007/05/15 18:55:22 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::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.'.$courseid.'.domain'};
   77:     if ($coursenum eq '' || $coursedom eq '') {
   78:         my %courseinfo=&Apache::lonnet::coursedescription($courseid);
   79:         if ($coursenum eq '' && exists($courseinfo{'num'})) {
   80:             $coursenum = $courseinfo{'num'};
   81:         }
   82:         if ($coursedom eq '' && exists($courseinfo{'domain'})) {
   83:             $coursedom = $courseinfo{'domain'};
   84:         }
   85:     }
   86: 
   87:     my %thiscal=&Apache::lonnet::dump('calendar',$coursedom,$coursenum);
   88:     my %returnhash=();
   89:     foreach my $item (keys(%thiscal)) {
   90:         unless (($item=~/^error\:/) || ($thiscal{$item}=~/^error\:/)) {
   91: 	    my ($start,$end)=split('_',$item);
   92: 	    $returnhash{join("\0",$courseid,$start,$end)}=$thiscal{$item};
   93:         }
   94:     }
   95:     my $can_see_hidden = ($env{'request.role.adv'} &&
   96: 			  ($courseid eq $env{'request.course.id'}));
   97:     
   98:     my $navmap;
   99:     if ($courseid eq $env{'request.course.id'}) {
  100: 	$navmap = Apache::lonnavmaps::navmap->new();
  101:     }
  102: 
  103:     my $resourcedata=
  104: 	&Apache::lonnet::get_courseresdata($coursenum,$coursedom);
  105:     if (ref($resourcedata) ne 'HASH') {
  106:         return %returnhash;
  107:     } 
  108:     foreach my $thiskey (keys(%$resourcedata)) {
  109: 	if ($resourcedata->{$thiskey.'.type'}=~/^date/) {
  110: 	    my ($course,$middle,$part,$name)=
  111: 		($thiskey=~/^(\Q$courseid\E)\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
  112: 
  113: 	    my %data = ( 'section' => &mt('All Students'));
  114: 	    if ($middle=~/^\[(.*)\]\./) {
  115: 		my $sec=$1;
  116: 		# if we have a section don't show ones that aren't ours
  117: 		if ($env{'request.course.sec'} &&
  118: 		    $env{'request.course.sec'} ne $sec) { next; }
  119: 		# if a student without a section don't show any section ones
  120: 		if (!$env{'request.role.adv'} &&
  121: 		    !$env{'request.course.sec'}) { next; }
  122: 		$data{'section'}=&mt('Group/Section').': '.$1;
  123: 		$middle=~s/^\[(.*)\]\.//;
  124: 	    }
  125: 	    $middle=~s/\.$//;
  126: 	    $data{'realm'}=&mt('All Resources');
  127: 	    if ($middle eq '___(all)') {
  128: 		if (!$can_see_hidden && !$navmap) {
  129: 		    next;
  130: 		}
  131: 	    } elsif ($middle=~/^(.+)\_\_\_\(all\)$/) {
  132: 		my $map_url=$1;
  133: 		if (!$can_see_hidden && !$navmap) {
  134: 		    next;
  135: 		}
  136: 		if (!$can_see_hidden) {
  137: 		    my $res = $navmap->getResourceByUrl($map_url);
  138: 		    if ($res && $res->randomout()) {
  139: 			next;
  140: 		    }
  141: 		}
  142: 		$data{'realm'}=&mt('Folder/Map');
  143: 		$data{'url'} = $map_url;
  144: 	    } elsif ($middle) {
  145: 		if (!$can_see_hidden && !$navmap) {
  146: 		    next;
  147: 		}
  148: 		if (!$can_see_hidden) {
  149: 		    my $res = $navmap->getBySymb($middle);
  150: 		    if ($res && $res->randomout()) {
  151: 			next;
  152: 		    }
  153: 		}
  154: 		$data{'realm'} = &mt('Resource');
  155: 		$data{'symb'} = $middle;
  156: 	    }
  157: 	    $data{'datetype'} = $name;
  158: 	    if ($name eq 'duedate') { 
  159: 		$data{'datetype'} = &mt('Due'); 
  160: # see if accidentally answerdate is before duedate
  161: 		my $answerkey=$thiskey;
  162: 		$answerkey=~s/duedate$/answerdate/;
  163: 		if ($resourcedata->{$thiskey}>$resourcedata->{$answerkey}) {
  164: 		    $data{'datetype'} = &mt('Due and Answer Available');
  165: 		}
  166: 	    }
  167: 	    if ($name eq 'opendate' 
  168: 		|| $name eq 'contentopen' ) {
  169: 		$data{'datetype'}=&mt('Opening');
  170: 	    }
  171: 	    if ($name eq 'contentclose') {
  172: 		$data{'datetype'}=&mt('Closing');
  173: 	    }
  174: 	    if ($name eq 'answerdate') {
  175: # see if accidentally answerdate is before duedate
  176: 		my $duekey=$thiskey;
  177: 		$duekey=~s/answerdate$/duedate/;
  178: 		if ($resourcedata->{$duekey}>$resourcedata->{$thiskey}) {
  179: # forget it
  180: 		    next;
  181: 		} 
  182: 		$data{'datetype'}=&mt('Answer Available'); 
  183: 	    }
  184: 	    $returnhash{join("\0",$courseid,
  185: 			     $resourcedata->{$thiskey},
  186: 			     $resourcedata->{$thiskey})}=\%data;
  187: 	}
  188:     }
  189:     return %returnhash;
  190: }
  191: 
  192: sub emptycell {
  193:     return '<td class="LC_calendar_day_empty">&nbsp;</td>';
  194: }
  195: 
  196: sub normalcell {
  197:     my ($day,$month,$year,$items_ref)=@_;
  198:     my $output;
  199:     my @items=&order($items_ref);
  200:     foreach my $item (@items) {
  201:         if ($item) {
  202: 	    my ($courseid,$start,$end,$msg)=@$item;
  203: 	    my $internalflag= (ref($msg)) ? 1 : 0;
  204: 	    $msg = &display_msg($msg);
  205:             my $fullmsg=&mt('Calendar Announcement for ').$env{'course.'.$courseid.'.description'}.
  206: 		'\n'.&Apache::lonlocal::locallocaltime($start);
  207: 	    if ($start!=$end) {
  208: 		$fullmsg.=' - '.&Apache::lonlocal::locallocaltime($end);
  209: 	    }
  210: 	    $fullmsg.=':\n'.$msg;
  211: 	    $fullmsg=~s/[\n\r]/\\n/gs;
  212:             $fullmsg=&HTML::Entities::encode($fullmsg,'<>&"\'');
  213:             $fullmsg=~s/&/\\&/g;
  214: 	    my $short_msg = substr($msg,0,20).((length($msg) > 20)?'...':'');
  215: 	    if (defined($output)) { $output.='<br />'; }
  216:             if ($courseid eq $env{'request.course.id'}) {
  217:               if ((&Apache::lonnet::allowed('srm',$env{'request.course.id'}))
  218:                && (!$showedcheck{$start.'_'.$end})
  219: 	       && ($env{'form.pickdate'} ne 'yes')
  220: 	       && (!$internalflag)) {
  221:                $output.='<input type="checkbox" name="remove_'.$start.'_'.
  222: 		   $end.'">';
  223:                $showedcheck{$start.'_'.$end}=1;
  224: 	      }
  225: 	    }
  226:             $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
  227: 	       $short_msg.'</a>';
  228:        }
  229:     }
  230:     return '<td class="LC_calendar_day'.
  231: 	((($day eq $todayhash{'day'}) &&
  232:           ($month eq $todayhash{'month'}) &&
  233:           ($year eq $todayhash{'year'}))?'_current':'').
  234:            '" ><b>'.&picklink($day,$day,$month,$year).'</b><br />'.$output.'</td>';
  235: }
  236: 
  237: sub plaincell {
  238:     my ($items_ref)=@_;
  239:     my $output;
  240:     my @items=&order($items_ref);
  241:     foreach my $item (@items) {
  242:         if (ref($item)) {
  243: 	    my ($courseid,$start,$end,$msg)=@$item;
  244:             my $fullmsg=&mt('Calendar Announcement for ').$env{'course.'.$courseid.'.description'}.
  245: 		'\n'.&Apache::lonlocal::locallocaltime($start);
  246: 	    if ($start!=$end) {
  247: 		$fullmsg.=' - '.&Apache::lonlocal::locallocaltime($end);
  248: 	    }
  249: 	    $msg = &display_msg($msg);
  250: 	    $fullmsg.=':\n'.$msg;
  251:  	    $fullmsg=~s/[\n\r]/\\n/gs;
  252:             $fullmsg=&HTML::Entities::encode($fullmsg,'<>&"\'');
  253:             $fullmsg=~s/&/\\&/g;
  254: 	    my $short_msg = substr($msg,0,80).((length($msg) > 80)?'...':'');
  255: 	    if (defined($output)) { $output.='<br />'; }
  256:             $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
  257: 	       $short_msg.'</a>';
  258:        }
  259:     }
  260:     return $output;
  261: }
  262: 
  263: sub listcell {
  264:     my ($items_ref)=@_;
  265:     my $output='';
  266:     my @items=&order($items_ref);
  267:     foreach my $item (@items) {
  268:         if (ref($item)) {
  269: 	    my ($courseid,$start,$end,$msg)=@$item;
  270: 	    my $fullmsg=&Apache::lonlocal::locallocaltime($start);
  271: 	    if ($start!=$end) {
  272: 		$fullmsg.=&mt(' to ').
  273: 		    &Apache::lonlocal::locallocaltime($end);
  274: 	    }
  275:             $fullmsg.=':<br /><b>'.&display_msg($msg).'</b>';
  276:             $output.='<li>'.$fullmsg.'</li>';
  277:        }
  278:     }
  279:     return $output;
  280: }
  281: 
  282: sub order {
  283:     my ($items)=@_;
  284:     return sort {
  285: 	my ($astart,$aend)=$a->[1,2];
  286: 	my ($bstart,$bend)=$b->[1,2];
  287: 	if ($astart != $bstart) {
  288: 	    return $astart <=> $bstart;
  289: 	}
  290: 	return $aend <=> $bend;
  291:     } @$items;
  292: }
  293: 
  294: sub nextday {
  295:     my %th=@_;
  296:     $th{'day'}++;
  297:     return (&Apache::loncommon::maketime(%th),$th{'month'});
  298: }
  299: 
  300: sub display_msg {
  301:     my ($msg) = @_;
  302: 
  303:     # if it's not a ref, it's an instructor provided message
  304:     return $msg if (!ref($msg));
  305: 
  306:     my $output = $msg->{'datetype'}. ': '.$msg->{'realm'};
  307:     if (exists($msg->{'url'})) {
  308: 	my $displayurl=&Apache::lonnet::gettitle($msg->{'url'});
  309: 	if ($msg->{'url'}!~/\Q$displayurl\E$/) {
  310: 	    $output .= ' - '.$displayurl;
  311: 	}
  312:     }
  313:     if (exists($msg->{'symb'})) {
  314: 	my $displaysymb=&Apache::lonnet::gettitle($msg->{'symb'});
  315: 	if ($msg->{'symb'}!~/\Q$displaysymb\E$/) {
  316: 	    $output .= ' - '.$displaysymb;
  317: 	}
  318:     }
  319:     $output .= ' ('.$msg->{'section'}.') ';
  320:     return $output;
  321: }
  322: 
  323: sub showday {
  324:     my ($tk,$mode,%allcal)=@_;
  325:     my %th=&Apache::loncommon::timehash($tk);
  326:     my ($nextday,$nextmonth)=&nextday(%th);
  327:     my @outp;
  328:     if ($mode) {
  329: 	my $oneday=24*3600;
  330: 	$tk-=$oneday;
  331: 	$nextday+=$oneday;
  332:     }
  333:     foreach my $item (keys(%allcal)) {
  334: 	my ($courseid,$startdate,$enddate)= split("\0",$item);
  335: 	if (($startdate<$nextday) && ($enddate>=$tk))  {
  336: 	    push(@outp,[$courseid,$startdate,$enddate,$allcal{$item}]);
  337:         }
  338:     }
  339:     unless ($mode) {
  340:        return ($nextday,$nextmonth,&normalcell(
  341:                $th{'day'},$th{'month'},$th{'year'},\@outp));
  342:    } elsif (@outp) {
  343:        if ($mode==1) {
  344:           return '<br />'.&plaincell(\@outp);
  345:       } else {
  346:           return '<ul>'.&listcell(\@outp).'</ul>';
  347:       }
  348:    } else {
  349:        return '';
  350:    }
  351: }
  352: 
  353: sub picklink {
  354:     my ($text,$day,$month,$year)=@_;
  355:     if ($env{'form.pickdate'} eq 'yes') {
  356: 	return '<a href="javascript:dialin('.$day.','.$month.','.$year.')">'.
  357: 	    $text.'</a>';
  358:     } else {
  359: 	return $text;
  360:     }
  361: }
  362: 
  363: sub dialscript {
  364:     return (<<ENDDIA);
  365: <script language="Javascript">
  366: function dialin(day,month,year) {
  367: 	opener.document.$env{'form.formname'}.$env{'form.element'}\_year.value=year;
  368:     var slct=opener.document.$env{'form.formname'}.$env{'form.element'}\_month;
  369:     var i;
  370:     for (i=0;i<slct.length;i++) {
  371:         if (slct.options[i].value==month) { slct.selectedIndex=i; }
  372:     }
  373:     opener.document.$env{'form.formname'}.$env{'form.element'}\_day.value=day;
  374:     opener.$env{'form.element'}\_checkday();
  375:     self.close();
  376: }
  377: </script>
  378: ENDDIA
  379: }
  380: # ----------------------------------------------------- Summarize all calendars
  381: sub get_all_calendars {
  382:     my %allcal=();
  383:     my %courses = &Apache::loncommon::findallcourses();
  384:     foreach my $course (sort(keys(%courses))) {
  385: 	%allcal=(%allcal,&readcalendar($course));
  386:     }
  387:     return %allcal;
  388: }
  389: 
  390: sub output_ics_file {
  391:     my ($r)=@_;
  392: # RFC 2445 wants CRLF
  393:     my $crlf="\015\012";
  394: # Header
  395:     $r->print("BEGIN:VCALENDAR$crlf");
  396:     $r->print("VERSION:2.0$crlf");
  397:     $r->print("PRODID:-//LONCAPA//LONCAPA Calendar Output//EN$crlf");
  398:     my %allcal=&get_all_calendars();
  399:     foreach my $event (keys(%allcal)) {
  400: 	my ($courseid,$startdate,$enddate)= split('\0',$event);
  401: 	my $uid=$event;
  402: 	$uid=~s/[\W\_]/-/gs;
  403: 	$uid.='@loncapa';
  404: 	my $summary=&display_msg($allcal{$event});
  405: 	$summary=~s/\s+/ /gs;
  406:         $summary=$env{'course.'.$courseid.'.description'}.': '.$summary;
  407: 	$r->print("BEGIN:VEVENT$crlf");
  408: 	$r->print("DTSTART:".&Apache::loncommon::utc_string($startdate).$crlf);
  409: 	$r->print("DTEND:".&Apache::loncommon::utc_string($enddate).$crlf);
  410: 	$r->print("SUMMARY:$summary$crlf");
  411: 	$r->print("UID:$uid$crlf");
  412: 	$r->print("END:VEVENT$crlf");
  413:     }
  414: # Footer
  415:     $r->print("END:VCALENDAR$crlf");
  416: }
  417: 
  418: sub handler {
  419:     my $r = shift;
  420:     if ($r->uri=~/\.(ics|ical)$/) {
  421:         &Apache::loncommon::content_type($r,'text/calendar');
  422: 	&output_ics_file($r);
  423: 	return OK;
  424:     }
  425:     &Apache::loncommon::content_type($r,'text/html');
  426:     $r->send_http_header;
  427:     return OK if $r->header_only;
  428: 
  429: # ---------------------------------------------------------- Get time right now
  430:     my $today=time;
  431:     %todayhash=&Apache::loncommon::timehash($today);
  432: # ----------------------------------------------------------------- Check marks
  433:     undef(%showedcheck);
  434: # ---------------------------------------------------------- Get month and year
  435:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
  436:                              ['month','year','pickdate','formname','element']);
  437: # --------------------------------------------------- Decide what month to show
  438:     my $year=$todayhash{'year'};
  439:     if ($env{'form.year'}) { $year=$env{'form.year'}; }
  440:     my $month=$todayhash{'month'};
  441:     if ($env{'form.month'}) { $month=$env{'form.month'}; }
  442: 
  443: # ---------------------------------------------- See if we are in pickdate mode
  444:     my $pickdatemode=($env{'form.pickdate'} eq 'yes');
  445:     my $pickinfo='&pickdate=yes&formname='.$env{'form.formname'}.
  446: 	'&element='.$env{'form.element'};
  447: # --------------------------------------------- Find out first day of the month
  448: 
  449:     my %firstday=&Apache::loncommon::timehash(
  450:        &Apache::loncommon::maketime( 'day' => 1, 'month'=> $month,
  451:                                      'year' => $year, 'hours' => 0,
  452: 				     'minutes' => 0, 'seconds' => 0,
  453:                                      'dlsav' => -1 ));
  454:     my $weekday=$firstday{'weekday'};
  455: # ------------------------------------------------------------ Print the screen
  456:     my $js = <<ENDDOCUMENT;
  457: <script type="text/javascript">
  458: 
  459:     function trysubmit() {
  460:         document.anno.action.value="new";
  461: 	document.anno.submit();
  462:     }
  463: 
  464:     function removesub() {
  465:         document.anno.action.value="del";
  466: 	document.anno.submit();
  467:     }
  468: </script>
  469: ENDDOCUMENT
  470: 
  471:     if ($pickdatemode) {
  472: # no big header in pickdate mode
  473: 	$r->print(&Apache::loncommon::start_page("Pick a Date",$js,
  474: 						 {'only_body' => 1,}).
  475: 		  &dialscript().
  476: 		  '<font size="1">');
  477:     } else {
  478:        $r->print(&Apache::loncommon::start_page("Announcements and Calendar",
  479: 						$js));
  480:     }
  481: # does this user have privileges to post, etc?
  482:     my $allowed=0;
  483:     if ($env{'request.course.id'}) {
  484:        $allowed=&Apache::lonnet::allowed('srm',$env{'request.course.id'});
  485:     }
  486: # does this user have privileges to post to servers?
  487:     my $serverpost=0;
  488:     if ($env{'request.role.domain'}) {
  489: 	$serverpost=&Apache::lonnet::allowed('psa',
  490: 					     $env{'request.role.domain'});
  491:     } else {
  492: 	$serverpost=&Apache::lonnet::allowed('psa','/');
  493:     }
  494: # -------------------------------- BUT: do no fancy stuff when in pickdate mode
  495:     if ($pickdatemode) { 
  496: 	$serverpost=0; 
  497: 	$allowed=0;
  498:     }
  499: # ------------------------------------------------------------ Process commands
  500:     if ($serverpost) {
  501: 	if ($env{'form.serveraction'}) {
  502: 	    foreach my $key (keys(%env)) {
  503: 		if ($key=~/^form\.postto\_(\w+)/) {
  504: 		    $r->print( 
  505: 			'<br />Posting '.$1.': '.&Apache::lonnet::postannounce
  506: 			($1,$env{'form.serverannnounce'}));
  507: 		}
  508: 	    }
  509: 	}
  510: 	$r->print(<<SERVERANNOUNCE);
  511: <form name="serveranno" method="post">
  512: <h3>Post Server Announcements</h3>
  513: Post announcements to the system login and roles screen<br />
  514: <i>(leave blank to delete announcement)</i><br />
  515: <textarea name="serverannnounce" cols="60" rows="5"></textarea><br />
  516: Check machines:<br />
  517: SERVERANNOUNCE
  518: # list servers
  519:     my %hostname = &Apache::lonnet::all_hostnames();
  520:     foreach my $host (sort(keys(%hostname))) {
  521: 	if (&Apache::lonnet::allowed('psa',
  522: 				     &Apache::lonnet::host_domain($host))) {
  523: 	    $r->print ('<br /><label><input type="checkbox" name="postto_'.$host.'" /> '.
  524: 		       $host.' <tt>'.$hostname{$host}.'</tt> '.
  525: 		       '</label><a href="http://'.$hostname{$host}.
  526: 		       '/announcement.txt" target="annowin">current</a>');
  527: 	}
  528:     }
  529:     $r->print(
  530:   '<br /><input type="submit" name="serveraction" value="Post"></form><hr />');
  531:     }
  532:     if ($allowed) {
  533:         my $coursenum=$env{'course.'.$env{'request.course.id'}.'.num'};
  534:         my $coursedom=$env{'course.'.$env{'request.course.id'}.'.domain'};
  535: # ----------------------------------------------------- Store new submitted one
  536:         if ($env{'form.action'} eq 'new') {
  537: 	    my $startdate = 
  538: 		&Apache::lonhtmlcommon::get_date_from_form('startdate');
  539: 	    my $enddate   = 
  540: 		&Apache::lonhtmlcommon::get_date_from_form('enddate');
  541: 	    unless ($startdate=~/^\d+$/) { $startdate=time; }
  542:             unless ($enddate=~/^\d+$/) { $enddate=$startdate+1; }
  543:             if ($startdate>$enddate) {
  544: 		my $buffer=$startdate;
  545: 		$startdate=$enddate;
  546: 		$enddate=$buffer;
  547:             }
  548: 	    &Apache::lonnet::put('calendar',{ 
  549: 		$startdate.'_'.$enddate => 
  550: 		    $env{'form.msg'} },$coursedom,$coursenum);
  551: 	    if ($env{'form.rsspost'}) {
  552:                &Apache::lonrss::addentry($coursenum,$coursedom,'Course_Announcements',
  553: 					 &mt('Event from [_1] to [_2]',
  554: 					     &Apache::lonlocal::locallocaltime($startdate),
  555: 					     &Apache::lonlocal::locallocaltime($enddate)),
  556: 					 $env{'form.msg'},'/adm/announcements','public');
  557: 	   }
  558:         }
  559: # ---------------------------------------------------------------- Remove items
  560:         if ($env{'form.action'} eq 'del') {
  561: 	    my @delwhich=();
  562:             foreach my $key (keys(%env)) {
  563: 		if ($key=~/^form\.remove\_(.+)$/) {
  564: 		    push(@delwhich,$1);
  565:                 }
  566:             }
  567:             &Apache::lonnet::del('calendar',\@delwhich,$coursedom,$coursenum);
  568:         }
  569: # -------------------------------------------------------- Form to post new one
  570:         my %tomorrowhash=%todayhash;
  571:         $tomorrowhash{'day'}++;
  572:         my $tomorrow=&Apache::loncommon::maketime(%tomorrowhash);
  573:         
  574:         &editfield($r,$today,$tomorrow,'');
  575:     }
  576: # ----------------------------------------------------- Summarize all calendars
  577:     my %allcal=&get_all_calendars();
  578: # ------------------------------- Initialize table and forward backward buttons
  579:     my ($pm,$py,$fm,$fy)=($month-1,$year,$month+1,$year);
  580:     if ($pm<1) { ($pm,$py)=(12,$year-1); }
  581:     if ($fm>12){ ($fm,$fy)=(1,$year+1); }
  582: 
  583:     $r->print('<h1>'.('',&mt('January'),&mt('February'),&mt('March'),
  584: 		      &mt('April'),&mt('May'),
  585: 		      &mt('June'),&mt('July'),&mt('August'),
  586:                       &mt('September'),&mt('October'),
  587:                       &mt('November'),&mt('December'))[$month].' '.
  588: 	              $year.'</h1>');
  589: # Reached the end of times, give up
  590:     if (($year<1970) || ($year>2037)) {
  591: 	$r->print('<h3>No calendar available for this date.</h3>'.
  592:  '<a href="/adm/announcements?month='.$todayhash{'month'}.
  593:  '&year='.$todayhash{'year'}.'">Current Month</a>'.
  594: 		  &Apache::loncommon::end_page());
  595: 	return OK;
  596:     }
  597: 
  598:     my $class = "LC_calendar";
  599:     if ($env{'form.pickdate'} eq 'yes') {
  600: 	$class .= " LC_calendar_pickdate";
  601:     }
  602:     $r->print(
  603:  '<a href="/adm/announcements?month='.$pm.'&year='.$py.
  604:  ($pickdatemode?$pickinfo:'').'">'.&mt('Previous Month').'</a> '.
  605:  '<a href="/adm/announcements?month='.$fm.'&year='.$fy.
  606:  ($pickdatemode?$pickinfo:'').'">'.&mt('Next Month').'</a>'.
  607:  '&nbsp;&nbsp;&nbsp;<a href="/adm/announcements?month='.$todayhash{'month'}.
  608:  '&year='.$todayhash{'year'}.
  609:  ($pickdatemode?$pickinfo:'').'">'.&mt('Current Month').'</a><p>'.
  610:         '<table class="'.$class.'" cols="7" rows="5"><tr>
  611: <th>'.&mt('Sun').'</th>
  612: <th>'.&mt('Mon').'</th>
  613: <th>'.&mt('Tue').'</th>
  614: <th>'.&mt('Wed').'</th>
  615: <th>'.&mt('Thu').'</th>
  616: <th>'.&mt('Fri').'</th>
  617: <th>'.&mt('Sat').'</th></tr>');
  618: 
  619:     my $tk=&Apache::loncommon::maketime(%firstday);
  620:     my $outp;
  621:     my $nm;
  622: 
  623: # ---------------------------------------------------------------- Actual table
  624:     $r->print('<tr>');
  625:     for (my $i=0;$i<$weekday;$i++) { $r->print(&emptycell); }
  626:     for (my $i=$weekday;$i<=6;$i++) { 
  627:         ($tk,$nm,$outp)=&showday($tk,0,%allcal);
  628:         $r->print($outp);
  629:     }
  630:     $r->print('</tr>');
  631: 
  632:     for (my $k=0;$k<=4;$k++) {
  633:         $r->print('<tr>');
  634:         for (my $i=0;$i<=6;$i++) {
  635:             ($tk,$nm,$outp)=&showday($tk,0,%allcal);
  636:             if ($month!=$nm) { $outp=&emptycell; }
  637:             $r->print($outp);
  638:         }
  639:         $r->print('</tr>');
  640:     }
  641: # ------------------------------------------------------------------- End table
  642:     $r->print('</table>');
  643: # ----------------------------------------------------------------- Check marks
  644:     undef(%showedcheck);
  645: # --------------------------------------------------------------- Remove button
  646:     if ($allowed) { $r->print('<input type="button" onClick="removesub()" value="Remove Checked Entries">'.
  647: 			      &Apache::loncommon::help_open_topic('Calendar_Remove_Announcement').'</form>'); }
  648:     $r->print('<p>'.
  649:  '<a href="/adm/announcements?month='.$pm.'&year='.$py.
  650:  ($pickdatemode?$pickinfo:'').'">'.&mt('Previous Month').'</a> '.
  651:  '<a href="/adm/announcements?month='.$fm.'&year='.$fy.
  652:  ($pickdatemode?$pickinfo:'').'">'.&mt('Next Month').'</a>'.
  653:  '&nbsp;&nbsp;&nbsp;<a href="/adm/announcements?month='.$todayhash{'month'}.
  654:  '&year='.$todayhash{'year'}.
  655:  ($pickdatemode?$pickinfo:'').'">'.&mt('Current Month').'</a></p>'.
  656:  ($pickdatemode?'</font>':'').&Apache::loncommon::end_page());
  657:     $r->print('<a href="/adm/announcements.ics">'.&mt('Download your Calendar as iCalendar File').'</a>');
  658:     return OK;
  659: } 
  660: 
  661: 1;
  662: __END__

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