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Diff for /loncom/interface/lonannounce.pm between versions 1.2 and 1.53

version 1.2, 2002/07/24 20:40:58 version 1.53, 2006/05/12 15:53:10
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network
 # Announce  # Announce
 #  #
 # (Internal Server Error Handler  # $Id$
 #  #
 # (Login Screen  # Copyright Michigan State University Board of Trustees
 # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,  
 # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)  
 #  #
 # 3/1/1 Gerd Kortemeyer)  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #  #
 # 3/1 Gerd Kortemeyer  # 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;  package Apache::lonannounce;
   
 use strict;  use strict;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   use Apache::loncommon;
   use Apache::lonhtmlcommon();
   use Apache::lonlocal;
   use Apache::lonnavmaps();
   use Apache::lonrss();
   use Apache::lonnet;
   use HTML::Entities();
   
   my %todayhash;
   my %showedcheck;
   
   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);
       my $help=&Apache::loncommon::help_open_menu('','Calendar Add Announcement','Calendar_Add_Announcement','',274,'Communication Tools');
       my %lt=&Apache::lonlocal::texthash('post' => 'Post Announcement',
          'start' => 'Starting date',
          'end' => 'Ending date',
          'incrss' => 'Include in course RSS newsfeed');
   
       $r->print(<<ENDFORM);
   $help
   <form name="anno" method="post">
   <input type="hidden" value='' name="action" />
   <table><tr><td>$lt{'start'}:</td><td>$startdateform</td></tr>
   <tr><td>$lt{'end'}:</td><td>$enddateform</td></tr></table>
   <textarea name="msg" rows="4" cols="60">$text</textarea>
   <br />
   <label><input type="checkbox" name="rsspost" /> $lt{'incrss'}</label>
   <br /><input type="button" onClick="trysubmit()" value="$lt{'post'}" /><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 my $item (keys(%thiscal)) {
           unless (($item=~/^error\:/) || ($thiscal{$item}=~/^error\:/)) {
      $returnhash{$courseid.'@'.$item}=$thiscal{$item};
           }
       }
   
       my $can_see_hidden = $env{'request.role.adv'};
       my $navmap = Apache::lonnavmaps::navmap->new();
       my %resourcedata=
    &Apache::lonnet::dump('resourcedata',$coursedom,$coursenum);
       foreach my $thiskey (sort keys %resourcedata) {
    if ($resourcedata{$thiskey.'.type'}=~/^date/) {
       my ($course,$middle,$part,$name)=
    ($thiskey=~/^(\w+)\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
       my $section=&mt('All Students');
       if ($middle=~/^\[(.*)\]\./) {
    my $sec=$1;
    # if we have a section don't show ones that aren't ours
    if ($env{'request.course.sec'} &&
       $env{'request.course.sec'} ne $sec) { next; }
    # if a student without a section don't show any section ones
    if (!$env{'request.role.adv'} &&
       !$env{'request.course.sec'}) { next; }
    $section=&mt('Group/Section').': '.$1;
    $middle=~s/^\[(.*)\]\.//;
       }
       $middle=~s/\.$//;
       my $realm=&mt('All Resources');
       if ($middle eq '___(all)') {
    if (!$can_see_hidden && !$navmap) {
       next;
    }
       } elsif ($middle=~/^(.+)\_\_\_\(all\)$/) {
    my $map_url=$1;
    if (!$can_see_hidden && !$navmap) {
       next;
    }
    if (!$can_see_hidden) {
       my $res = $navmap->getResourceByUrl($map_url);
       if ($res && $res->randomout()) { next; }
    }
    $realm=&mt('Folder/Map').': '.&Apache::lonnet::gettitle($map_url);
       } elsif ($middle) {
    if (!$can_see_hidden && !$navmap) {
       next;
    }
    if (!$can_see_hidden) {
       my $res = $navmap->getBySymb($middle);
       if ($res && $res->randomout()) { next; }
    }
    $realm=&mt('Resource').': '.&Apache::lonnet::gettitle($middle);
       }
       my $datetype='';
       if ($name eq 'duedate') { 
    $datetype=&mt('Due'); 
   # see if accidentally answerdate is before duedate
    my $answerkey=$thiskey;
    $answerkey=~s/duedate$/answerdate/;
    if ($resourcedata{$thiskey}>$resourcedata{$answerkey}) {
       $datetype=&mt('Due and Answer Available');
    }
       }
       if ($name eq 'opendate') { $datetype=&mt('Opening'); }
       if ($name eq 'answerdate') {
   # see if accidentally answerdate is before duedate
    my $duekey=$thiskey;
    $duekey=~s/answerdate$/duedate/;
    if ($resourcedata{$duekey}>$resourcedata{$thiskey}) {
   # forget it
       next;
    } 
    $datetype=&mt('Answer Available'); 
       }
       $returnhash{$courseid.'@'.$resourcedata{$thiskey}.'_'.
       $resourcedata{$thiskey}}=
       'INTERNAL:'.$datetype.': '.$realm.' ('.$section.')';
    }
       }
       return %returnhash;
   }
   
   sub emptycell {
       return '<td class="LC_calendar_day_empty">&nbsp;</td>';
   }
   
   sub normalcell {
       my ($day,$month,$year,$text)=@_;
       my $output;
       my @items=&order($text);
       foreach my $item (@items) {
           if ($item) {
       my $internalflag=0;
       my ($courseid,$start,$end,$msg)=split(/\@/,$item,4);
       if ($msg=~/INTERNAL\:/) {
    $msg=~s/INTERNAL\://gs;
    $internalflag=1;
       }
               my $fullmsg=&mt('Calendar Announcement for ').$env{'course.'.$courseid.'.description'}.
    '\n'.&Apache::lonlocal::locallocaltime($start);
       if ($start!=$end) {
    $fullmsg.=' - '.&Apache::lonlocal::locallocaltime($end);
       }
       $fullmsg.=':\n'.$msg;
               if ($courseid eq $env{'request.course.id'}) {
                 if ((&Apache::lonnet::allowed('srm',$env{'request.course.id'}))
                  && (!$showedcheck{$start.'_'.$end})
          && ($env{'form.pickdate'} ne 'yes')
          && (!$internalflag)) {
                  $output.='<input type="checkbox" name="remove_'.$start.'_'.
      $end.'">';
                  $showedcheck{$start.'_'.$end}=1;
         }
       }
       $fullmsg=~s/[\n\r]/\\n/gs;
               $fullmsg=&HTML::Entities::encode($fullmsg,'<>&"\'');
               $fullmsg=~s/&/\\&/g;
       my $short_msg = substr($msg,0,20).((length($msg) > 20)?'...':'');
       if (defined($output)) { $output.='<br />'; }
               $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
          $short_msg.'</a>';
          }
       }
       return '<td class="LC_calendar_day'.
    ((($day eq $todayhash{'day'}) &&
             ($month eq $todayhash{'month'}) &&
             ($year eq $todayhash{'year'}))?'_current':'').
              '" ><b>'.&picklink($day,$day,$month,$year).'</b><br />'.$output.'</td>';
   }
   
   sub plaincell {
       my ($text)=@_;
       my $output;
       my @items=&order($text);
       foreach my $item (@items) {
           if ($item) {
       my ($courseid,$start,$end,$msg)=split(/\@/,$item,4);
               my $fullmsg=&mt('Calendar Announcement for ').$env{'course.'.$courseid.'.description'}.
    '\n'.&Apache::lonlocal::locallocaltime($start);
       if ($start!=$end) {
    $fullmsg.=' - '.&Apache::lonlocal::locallocaltime($end);
       }
       $msg=~s/INTERNAL\://gs;
       $fullmsg.=':\n'.$msg;
        $fullmsg=~s/[\n\r]/\\n/gs;
               $fullmsg=&HTML::Entities::encode($fullmsg,'<>&"\'');
               $fullmsg=~s/&/\\&/g;
       my $short_msg = substr($msg,0,80).((length($msg) > 80)?'...':'');
       if (defined($output)) { $output.='<br />'; }
               $output.='<a href="javascript:alert('."'$fullmsg'".')">'.
          $short_msg.'</a>';
          }
       }
       return $output;
   }
   
   sub listcell {
       my ($text)=@_;
       my $output='';
       my @items=&order($text);
       foreach my $item (@items) {
           if ($item) {
       my ($courseid,$start,$end,$msg)=split(/\@/,$item,4);
       $msg=~s/INTERNAL\://gs;
               my $fullmsg=&Apache::lonlocal::locallocaltime($start);
       if ($start!=$end) {
    $fullmsg.=&mt(' to ').
       &Apache::lonlocal::locallocaltime($end);
       }
               $fullmsg.=':<br /><b>'.
                  $msg.'</b>';
               $output.='<li>'.$fullmsg.'</li>';
          }
       }
       return $output;
   }
   
   sub order {
       my ($text)=@_;
       my @items = split(/___&&&___/,$text);
       sort {
    my (undef,$astart,$aend)=split(/\@/,$a);
    my (undef,$bstart,$bend)=split(/\@/,$b);
    if ($astart != $bstart) {
       return $astart <=> $bstart;
    }
    return $aend <=> $bend;
       } @items;
   }
   
   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 $outp='';
       if ($mode) {
    my $oneday=24*3600;
    $tk-=$oneday;
    $nextday+=$oneday;
       }
       foreach my $item (keys(%allcal)) {
    my ($course,$startdate,$enddate)=($item=~/^(\w+)\@(\d+)\_(\d+)$/);
           if (($startdate<$nextday) && ($enddate>=$tk))  {
       $outp.='___&&&___'.$course.'@'.$startdate.'@'.$enddate.'@'.
               $allcal{$item};
           }
       }
       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 picklink {
       my ($text,$day,$month,$year)=@_;
       if ($env{'form.pickdate'} eq 'yes') {
    return '<a href="javascript:dialin('.$day.','.$month.','.$year.')">'.
       $text.'</a>';
       } else {
    return $text;
       }
   }
   
   sub dialscript {
       return (<<ENDDIA);
   <script language="Javascript">
   function dialin(day,month,year) {
    opener.document.$env{'form.formname'}.$env{'form.element'}\_year.value=year;
       var slct=opener.document.$env{'form.formname'}.$env{'form.element'}\_month;
       var i;
       for (i=0;i<slct.length;i++) {
           if (slct.options[i].value==month) { slct.selectedIndex=i; }
       }
       opener.document.$env{'form.formname'}.$env{'form.element'}\_day.value=day;
       opener.$env{'form.element'}\_checkday();
       self.close();
   }
   </script>
   ENDDIA
   }
   # ----------------------------------------------------- Summarize all calendars
   sub get_all_calendars {
       my %allcal=();
       foreach my $course (sort(&Apache::loncommon::findallcourses())) {
    %allcal=(%allcal,&readcalendar($course));
       }
       return %allcal;
   }
   
   sub output_ics_file {
       my ($r)=@_;
   # RFC 2445 wants CRLF
       my $crlf="\015\012";
   # Header
       $r->print("BEGIN:VCALENDAR$crlf");
       $r->print("VERSION:2.0$crlf");
       $r->print("PRODID:-//LONCAPA//LONCAPA Calendar Output//EN$crlf");
       my %allcal=&get_all_calendars();
       foreach my $event (keys(%allcal)) {
    my ($courseid,$startdate,$enddate)=($event=~/^(\w+)\@(\d+)\_(\d+)$/);
    my $uid=$event;
    $uid=~s/[\W\_]/-/gs;
    $uid.='@loncapa';
    my $summary=$allcal{$event};
    $summary=~s/^INTERNAL\://;
    $summary=~s/\s+/ /gs;
           $summary=$env{'course.'.$courseid.'.description'}.': '.$summary;
    $r->print("BEGIN:VEVENT$crlf");
    $r->print("DTSTART:".&Apache::loncommon::utc_string($startdate).$crlf);
    $r->print("DTEND:".&Apache::loncommon::utc_string($enddate).$crlf);
    $r->print("SUMMARY:$summary$crlf");
    $r->print("UID:$uid$crlf");
    $r->print("END:VEVENT$crlf");
       }
   # Footer
       $r->print("END:VCALENDAR$crlf");
   }
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     $r->content_type('text/html');      if ($r->uri=~/\.(ics|ical)$/) {
           &Apache::loncommon::content_type($r,'text/calendar');
    &output_ics_file($r);
    return OK;
       }
       &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
   
 # --------------------------------------------------- Print login screen header  # ---------------------------------------------------------- Get time right now
     $r->print(<<ENDDOCUMENT);      my $today=time;
 <html>      %todayhash=&Apache::loncommon::timehash($today);
 <head>  # ----------------------------------------------------------------- Check marks
 <title>The LearningOnline Network with CAPA</title>      undef(%showedcheck);
 </head>  # ---------------------------------------------------------- Get month and year
 <body bgcolor="#FFFFFF">      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
 <h1>Printout</h1>                               ['month','year','pickdate','formname','element']);
 <img src="/adm/lonKaputt/lonconstruct.gif">  # --------------------------------------------------- Decide what month to show
 </body>      my $year=$todayhash{'year'};
 </html>      if ($env{'form.year'}) { $year=$env{'form.year'}; }
       my $month=$todayhash{'month'};
       if ($env{'form.month'}) { $month=$env{'form.month'}; }
   
   # ---------------------------------------------- See if we are in pickdate mode
       my $pickdatemode=($env{'form.pickdate'} eq 'yes');
       my $pickinfo='&pickdate=yes&formname='.$env{'form.formname'}.
    '&element='.$env{'form.element'};
   # --------------------------------------------- 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' => -1 ));
       my $weekday=$firstday{'weekday'};
   # ------------------------------------------------------------ Print the screen
       my $js = <<ENDDOCUMENT;
   <script type="text/javascript">
   
       function trysubmit() {
           document.anno.action.value="new";
    document.anno.submit();
       }
   
       function removesub() {
           document.anno.action.value="del";
    document.anno.submit();
       }
   </script>
 ENDDOCUMENT  ENDDOCUMENT
   
       if ($pickdatemode) {
   # no big header in pickdate mode
    $r->print(&Apache::loncommon::start_page("Pick a Date",$js,
    {'only_body' => 1,}).
     &dialscript().
     '<font size="1">');
       } else {
          $r->print(&Apache::loncommon::start_page("Announcements and Calendar",
    $js));
       }
   # 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'});
       }
   # does this user have privileges to post to servers?
       my $serverpost=0;
       if ($env{'request.role.domain'}) {
    $serverpost=&Apache::lonnet::allowed('psa',
        $env{'request.role.domain'});
       } else {
    $serverpost=&Apache::lonnet::allowed('psa','/');
       }
   # -------------------------------- BUT: do no fancy stuff when in pickdate mode
       if ($pickdatemode) { 
    $serverpost=0; 
    $allowed=0;
       }
   # ------------------------------------------------------------ Process commands
       if ($serverpost) {
    if ($env{'form.serveraction'}) {
       foreach my $key (keys(%env)) {
    if ($key=~/^form\.postto\_(\w+)/) {
       $r->print( 
    '<br />Posting '.$1.': '.&Apache::lonnet::postannounce
    ($1,$env{'form.serverannnounce'}));
    }
       }
    }
    $r->print(<<SERVERANNOUNCE);
   <form name="serveranno" method="post">
   <h3>Post Server Announcements</h3>
   Post announcements to the system login and roles screen<br />
   <i>(leave blank to delete announcement)</i><br />
   <textarea name="serverannnounce" cols="60" rows="5"></textarea><br />
   Check machines:<br />
   SERVERANNOUNCE
   # list servers
       foreach my $host (sort(keys(%Apache::lonnet::hostname))) {
    if (&Apache::lonnet::allowed('psa',$Apache::lonnet::hostdom{$host})) {
       $r->print ('<br /><input type="checkbox" name="postto_'.$host.'" /> '.
          $host.' <tt>'.$Apache::lonnet::hostname{$host}.'</tt> '.
          '<a href="http://'.$Apache::lonnet::hostname{$host}.
          '/announcement.txt" target="annowin">current</a>');
    }
       }
       $r->print(
     '<br /><input type="submit" name="serveraction" value="Post"></form><hr />');
       }
       if ($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,$coursenum);
       if ($env{'form.rsspost'}) {
                  &Apache::lonrss::addentry($coursenum,$coursedom,'Course_Announcements',
    &mt('Event from [_1] to [_2]',
        &Apache::lonlocal::locallocaltime($startdate),
        &Apache::lonlocal::locallocaltime($enddate)),
    $env{'form.msg'},'/adm/announcements','public');
      }
           }
   # ---------------------------------------------------------------- Remove items
           if ($env{'form.action'} eq 'del') {
       my @delwhich=();
               foreach my $key (keys(%env)) {
    if ($key=~/^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,$tomorrow,'');
       }
   # ----------------------------------------------------- Summarize all calendars
       my %allcal=&get_all_calendars();
   # ------------------------------- Initialize table and forward backward buttons
       my ($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); }
   
       $r->print('<h1>'.('',&mt('January'),&mt('February'),&mt('March'),
         &mt('April'),&mt('May'),
         &mt('June'),&mt('July'),&mt('August'),
                         &mt('September'),&mt('October'),
                         &mt('November'),&mt('December'))[$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>'.
     &Apache::loncommon::end_page());
    return OK;
       }
   
       my $class = "LC_calendar";
       if ($env{'form.pickdate'} eq 'yes') {
    $class .= " LC_calendar_pickdate";
       }
       $r->print(
    '<a href="/adm/announcements?month='.$pm.'&year='.$py.
    ($pickdatemode?$pickinfo:'').'">'.&mt('Previous Month').'</a> '.
    '<a href="/adm/announcements?month='.$fm.'&year='.$fy.
    ($pickdatemode?$pickinfo:'').'">'.&mt('Next Month').'</a>'.
    '&nbsp;&nbsp;&nbsp;<a href="/adm/announcements?month='.$todayhash{'month'}.
    '&year='.$todayhash{'year'}.
    ($pickdatemode?$pickinfo:'').'">'.&mt('Current Month').'</a><p>'.
           '<table class="'.$class.'" cols="7" rows="5"><tr>
   <th>'.&mt('Sun').'</th>
   <th>'.&mt('Mon').'</th>
   <th>'.&mt('Tue').'</th>
   <th>'.&mt('Wed').'</th>
   <th>'.&mt('Thu').'</th>
   <th>'.&mt('Fri').'</th>
   <th>'.&mt('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<=4;$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
       $r->print('</table>');
   # ----------------------------------------------------------------- Check marks
       undef(%showedcheck);
   # --------------------------------------------------------------- Remove button
       if ($allowed) { $r->print('<input type="button" onClick="removesub()" value="Remove Checked Entries">'.
         &Apache::loncommon::help_open_topic('Calendar_Remove_Announcement').'</form>'); }
       $r->print('<p>'.
    '<a href="/adm/announcements?month='.$pm.'&year='.$py.
    ($pickdatemode?$pickinfo:'').'">'.&mt('Previous Month').'</a> '.
    '<a href="/adm/announcements?month='.$fm.'&year='.$fy.
    ($pickdatemode?$pickinfo:'').'">'.&mt('Next Month').'</a>'.
    '&nbsp;&nbsp;&nbsp;<a href="/adm/announcements?month='.$todayhash{'month'}.
    '&year='.$todayhash{'year'}.
    ($pickdatemode?$pickinfo:'').'">'.&mt('Current Month').'</a></p>'.
    ($pickdatemode?'</font>':'').&Apache::loncommon::end_page());
       $r->print('<a href="/adm/announcements.ics">'.&mt('Download your Calendar as iCalendar File').'</a>');
     return OK;      return OK;
 }   } 
   
Removed from v.1.2  
changed lines
  Added in v.1.53

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