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Diff for /loncom/homework/outputtags.pm between versions 1.9 and 1.41

version 1.9, 2001/08/06 19:36:17 version 1.41, 2005/11/03 11:12:37
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 # The LON-CAPA output tags handler  # The LearningOnline Network with CAPA 
   # tags that create controlled output
 #  #
 # Handles output tags.  # $Id$
   #
   # 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/
 #  #
 # YEAR=2001  
 # 1/11,1/15,4/26,6/1,6/2 Guy Albertelli  
 # 8/6 Scott Harrison  
   
 package Apache::outputtags;   package Apache::outputtags; 
   
 use strict;  use strict;
   use Apache::lonlocal;
 use Apache::lonnet;  use Apache::lonnet;
 use POSIX qw(strftime);  use POSIX qw(strftime);
   
 # ======================================================================= BEGIN  BEGIN {
 sub BEGIN {      &Apache::lonxml::register('Apache::outputtags',('displayduedate','displaytitle','displayweight','displaystudentphoto'));
     &Apache::lonxml::register('Apache::outputtags',('displayduedate',  
     'displaytitle'));  
 }  }
   #  Empties the hash of tags that have already been displayed
   #  that should only be displayed once.
   #
   sub initialize_outputtags {
       %Apache::outputtags::showonce=();
   }
   
   
 # =============================== Start display due date (return scalar string)  
 sub start_displayduedate {  sub start_displayduedate {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result;      my $result;
   
       # Different parts can have different due dates... so we keep a list
       # of the parts for which we've displayed the duedate:
   
       if (exists($Apache::outputtags::showonce{'displayduedate'})) {
    if (grep(/^\Q$Apache::inputtags::part\E$/,
    @{$Apache::outputtags::showonce{'displayduedate'}})) {
       return ''; # Already shown the duedate for this part.
    }
       }
       # since we will show the duedate for this part, remeber it.
   
       push (@{$Apache::outputtags::showonce{'displayduedate'}},
     $Apache::inputtags::part);
   
     my $status=$Apache::inputtags::status['-1'];      my $status=$Apache::inputtags::status['-1'];
     &Apache::lonxml::debug("got a $status in duedatebox");      &Apache::lonxml::debug("got a $status in duedatebox");
       my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval);
     if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {      if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {
  my $format = &Apache::lonxml::get_param('format',$parstack,$safeeval);  
  if ($format eq '') {  
     &Apache::lonxml::debug("using default format");  
     $format="%c";  
  }  
  my $id = $Apache::inputtags::part;   my $id = $Apache::inputtags::part;
  my $date = &Apache::lonnet::EXT("resource.$id.duedate");   my $date = &Apache::lonnet::EXT("resource.$id.duedate");
  &Apache::lonxml::debug("duedatebox found $date for $id");   &Apache::lonxml::debug("duedatebox found $date for $id");
  if ($date) {  
     $result = '<table border="on"><tr><td>Due at '.   # Only show the due date if the current date is 
               POSIX::strftime($format,localtime($date)).   # different from due date of the previous part.  I think
       '</td></tr></table>';   # this is probably the best way to avoid due date clutter.
  } else {  
     $result = '<table border="on"><tr><td>No due date set.</td></tr>'.          my $showduedate = 1;
       '</table>';   my $part_count  = scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
    if ($part_count > 1) {
       my $prev_part_id = $Apache::outputtags::showonce{'displayduedate'}->[$part_count-2];
       my $prev_due_date = &Apache::lonnet::EXT("resource.$prev_part_id.duedate");
       if ($prev_due_date == $date) {
    $showduedate = 0;
       }
  }   }
   
    if ($showduedate) {
       if (lc($style) !~ 'plain') { 
    $result ='<table border="on"><tr><td>Due '.
       &Apache::lonnavmaps::timeToHumanString($date).
       '</td></tr></table>';
       } else {
    $result=&mt('Due').' '.&Apache::lonnavmaps::timeToHumanString($date);
       }
    }
       } elsif ( $target eq 'edit' ) {
    $result=&Apache::edit::tag_start($target,$token);
    $result.='</td></tr>';
    $result.=&Apache::edit::end_table();
       } elsif {$target eq 'tex'} {
    # print target.
    $result =''; # Stubbed off for now.
     }      }
     return $result;      return $result;
 }  }
   
 # ======================================================== End display due date  
 sub end_displayduedate {  sub end_displayduedate {
     return '';      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my @result;
       if ($target eq 'edit') { $result[1]='no'; }
       return @result;
 }  }
   
 # ================================== Start display title (return scalar string)  
 sub start_displaytitle {  sub start_displaytitle {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result = '';      my $result='';
       if (exists($Apache::outputtags::showonce{'displayduetitle'})) {
    return '';
       } else {
    $Apache::outputtags::showonce{'displayduetitle'}=1;
       }
       my $name=&Apache::structuretags::get_resource_name();
       my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval);
     if ($target eq 'web') {      if ($target eq 'web') {
  $result = "<h1>$Apache::lonhomework::name</h1>";   $result=$name;
    if (lc($style) !~ 'plain') { $result="<h1>$name</h1>"; }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::tag_start($target,$token);
    $result.='</td></tr>';
    $result.=&Apache::edit::end_table();
       } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
    $name=&Apache::lonxml::latex_special_symbols($name);
    if (lc($style) !~ 'plain') { 
       $result='\vskip 0 mm\noindent\textbf{'.$name.'}\vskip 0 mm';
    } else {
       $result=$name;
    }
     }      }
     return $result;      return $result;
 }  }
   
 # =========================================================== End display title  
 sub end_displaytitle {  sub end_displaytitle {
   return '';      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my @result;
       if ($target eq 'edit') { $result[1]='no'; }
       return @result;
 }  }
   
 1;  sub multipart {
       my ($uri)=@_;
       if (!defined($uri)) { $uri=$env{'request.uri'}; }
       my @parts;
       my $metadata = &Apache::lonnet::metadata($uri,'packages');
       foreach (split(/\,/,$metadata)) {
    if ($_ =~ /^part_(.*)$/) {
       my $part = $1;
       if ($part ne '0') { push(@parts,$part); }
    }
       }
       return @parts;
   }
   
   sub start_displayweight {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if (exists($Apache::outputtags::showonce{'displayweight'})) {
    if(grep(/^\Q$Apache::inputtags::part\E$/,
    @{$Apache::outputtags::showonce{'displayweight'}})) {
       return '';
    }
       }
       push(@{$Apache::outputtags::showonce{'displayweight'}},
    $Apache::inputtags::part);
       if ($target eq 'web' || $target eq 'tex') {
    my $id = $Apache::inputtags::part;
    if ($id ne '0') {
       my $weight = &Apache::lonnet::EXT("resource.$id.weight");
       if (!defined($weight) || ($weight eq '')) { $weight=1; }
       $result.=$weight;
    } else {
       my @parts=&multipart($env{'request.uri'});
       my $weight;
       if (@parts) {
           foreach my $part (@parts) {
       my $pweight=&Apache::lonnet::EXT("resource.$part.weight");
       if (!defined($pweight) || ($pweight eq '')) { $pweight=1; }
       $weight+=$pweight;
           }
       } else {
    $weight = &Apache::lonnet::EXT("resource.$id.weight");
                   if (!defined($weight) || ($weight eq '')) { $weight=1; }
       }
       $result=$weight;
    }
       } elsif ( $target eq 'edit' ) {
    $result=&Apache::edit::tag_start($target,$token);
    $result.='</td></tr>';
    $result.=&Apache::edit::end_table();
       }
       return $result;
   }
   
   sub end_displayweight {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my @result;
       if ($target eq 'edit') { $result[1]='no'; }
       return @result;
   }
   
   sub start_displaystudentphoto {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       my (undef,undef,$domain,$user) = &Apache::lonxml::whichuser();
       if ($target eq 'web' && $user eq $env{'user.name'}) {
    my $url=&Apache::lonnet::studentphoto($domain,$user,"gif");
    my $args;
    my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
    if ($width) { $args.=" width=\"$width\" "; }
    my $height=&Apache::lonxml::get_param('heigth',$parstack,$safeeval);
    if ($height) { $args.=" height=\"$height\" "; }
    my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval);
    if ($align) { $args.=" align=\"$align\" "; }
    $result.=" <img $args src=\"$url\" alt=\"$user\@$domain\" />";
       }
       if ($target eq 'tex' && $env{'request.role'} =~ /^cc/) {
    my $url=&Apache::lonnet::studentphoto($domain,$user,"eps");
    my $ua=new LWP::UserAgent;
    my $request=new HTTP::Request('GET',$url);
    my $response=$ua->request($request);
    if ($response->is_success) {
       my $file=$user."_".$domain."_studentphoto.eps";
       open(FILE,">".$Apache::lonnet::perlvar{'lonPrtDir'}."/$file");
       print FILE $response->content;
       close(FILE);
       my $width_param=&Apache::londefdef::image_size($Apache::lonnet::perlvar{'lonPrtDir'}."/$file",'0.3',$parstack,$safeeval);
       $result.=' \graphicspath{{'.$Apache::lonnet::perlvar{'lonPrtDir'}.
    '}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
    } else {
       $result="$user\@$domain";
    }
       }
       return $result;
   }
   
   sub end_displaystudentphoto {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my @result;
       if ($target eq 'edit') { $result[1]='no'; }
       return @result;
   }
   
   1;
 __END__  __END__
Removed from v.1.9  
changed lines
  Added in v.1.41

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