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Annotation of loncom/homework/lonhomework.pm, revision 1.18

1.1       albertel    1: # The LON-CAPA Homework handler
                      2: # Guy Albertelli
1.17      www         3: # 11/30 Gerd Kortemeyer
1.1       albertel    4: 
                      5: package Apache::lonhomework;
                      6: use strict;
                      7: use Apache::style;
                      8: use Apache::lonxml;
1.2       albertel    9: use Apache::lonnet;
                     10: use Apache::inputtags;
                     11: use Apache::structuretags;
1.9       albertel   12: use Apache::response;
1.1       albertel   13: 
1.16      albertel   14: 
1.5       albertel   15: sub get_target {
1.15      albertel   16:   if ( $ENV{'request.state'} eq "published") {
1.18    ! albertel   17:     if ( defined $ENV{'form.submit'}) {
        !            18:       return ('grade', 'web');
        !            19:     } else {
        !            20:       return ('web');
        !            21:     }
1.15      albertel   22:   } elsif ($ENV{'request.state'} eq "construct") {
1.16      albertel   23:     if ( defined $ENV{'form.preview'}) {
1.18    ! albertel   24:       if ( defined $ENV{'form.submit'}) {
        !            25: 	return ('grade', 'web');
        !            26:       } else {
        !            27: 	return ('web');
        !            28:       }
1.15      albertel   29:     } else {
1.18    ! albertel   30:       return ('edit');
1.15      albertel   31:     }
                     32:   }
1.18    ! albertel   33:   return ();
1.5       albertel   34: }
                     35: 
1.3       albertel   36: sub setup_vars {
1.5       albertel   37:   my ($target) = @_;
1.11      albertel   38:   return ';'
                     39: #  return ';$external::target='.$target.';';
1.2       albertel   40: }
                     41: 
                     42: sub send_header {
                     43:   my ($request)= @_;
1.14      albertel   44:   $request->print(&Apache::lontexconvert::header());
1.16      albertel   45:   $ENV{'request.uri'}=$request->uri;
                     46: #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2       albertel   47: }
                     48: 
                     49: sub send_footer {
                     50:   my ($request)= @_;
1.16      albertel   51: #  $request->print('</form>');
1.14      albertel   52:   $request->print(&Apache::lontexconvert::footer());
1.2       albertel   53: }
                     54: 
1.17      www        55: sub handler {
1.18    ! albertel   56:   my $request=$_[0];
1.17      www        57: 
                     58:   $Apache::lonxml::debug=1;
1.18    ! albertel   59:   
        !            60:   my (@targets) = &get_target();
        !            61: 
1.17      www        62:   if ($ENV{'browser.mathml'}) {
                     63:     $request->content_type('text/xml');
                     64:   } else {
                     65:     $request->content_type('text/html');
                     66:   }
                     67:   $request->send_http_header;
                     68:   return 'OK' if $request->header_only;
1.18    ! albertel   69:   
1.17      www        70:   &Apache::lonhomework::send_header($request);
1.18    ! albertel   71:   
        !            72:   foreach my $target (@targets) {
        !            73:     my $file=&Apache::lonnet::filelocation("",$request->uri);
        !            74:     my $problem=&Apache::lonnet::getfile($file);
        !            75:     if ($problem == -1) {
        !            76:       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
        !            77:       $problem='';
        !            78:     }
        !            79:     
        !            80:     my %mystyle;
        !            81:     my $result = '';
        !            82:     &Apache::inputtags::initialize_inputtags;
        !            83:     %Apache::lonhomework::results=();
        !            84:     %Apache::lonhomework::history=&Apache::lonnet::restore;
        !            85:     #ignore error conditions
        !            86:     my ($temp)=keys %Apache::lonhomework::history ;
        !            87:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } 
        !            88:     
        !            89:     if ($target eq 'grade') {
        !            90:       my $resultkey;
        !            91:       foreach $resultkey (sort keys %Apache::lonhomework::history) {
        !            92: 	&Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
        !            93:       }
        !            94:       &Apache::lonxml::debug("\n<br>restored values^</br>\n");
        !            95:     }
        !            96:     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
        !            97:     if ($default == -1) {
        !            98:       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
        !            99:       $default='';
        !           100:     }
        !           101:     if ( $target eq 'grade') { 
        !           102:       $Apache::lonxml::textredirection = 0; 
        !           103:     } else {
        !           104:       $Apache::lonxml::textredirection = 1; 
        !           105:     }
        !           106:     $result = &Apache::lonxml::xmlparse($target, $problem,
        !           107: 			$default.&setup_vars($target),%mystyle);
1.17      www       108: 
1.18    ! albertel  109:     #$request->print("Result follows:");
        !           110:     $request->print($result);
        !           111:     #$request->print(":Result ends");
        !           112:     if ($target eq 'grade') {
        !           113:       my $resultkey;
        !           114:       foreach $resultkey (sort keys %Apache::lonhomework::results) {
        !           115: 	&Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
        !           116:       }
        !           117:       &Apache::lonxml::debug("\n<br>storing values^</br>\n");
        !           118:     }
        !           119:     
        !           120:     my ($temp) = keys %Apache::lonhomework::results;
        !           121:     if ( $temp ne '' ) {
        !           122:       &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
        !           123:     }
1.17      www       124:   }
                    125:   &Apache::lonhomework::send_footer($request);
1.18    ! albertel  126:   
1.17      www       127:   return 'OK';
                    128: 
1.1       albertel  129: }
                    130: 
                    131: 1;
                    132: __END__