--- rat/lonpage.pm	2002/05/21 02:26:16	1.38
+++ rat/lonpage.pm	2002/09/16 14:23:02	1.46
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Page Handler
 #
-# $Id: lonpage.pm,v 1.38 2002/05/21 02:26:16 albertel Exp $
+# $Id: lonpage.pm,v 1.46 2002/09/16 14:23:02 sakharuk Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -48,6 +48,7 @@ use Apache::loncommon();
 use Apache::lonxml();
 use HTML::TokeParser;
 use GDBM_File;
+use Apache::lonsequence;
 
 # -------------------------------------------------------------- Module Globals
 my %hash;
@@ -146,19 +147,22 @@ sub handler {
        if ($ENV{'browser.mathml'}) {
            $r->content_type('text/xml');
        } else {
-           $r->content_type('text/html');
+           $r->content_type('text/html'); 
        }
        $r->send_http_header;
        return OK;
    }
-
+  
+   &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+                                          ['forceselect','launch']);
+  my $number_of_columns = 1;
   my $requrl=$r->uri;  
   my $target = $ENV{'form.grade_target'};
 # ----------------------------------------------------------------- Tie db file
-  if ($ENV{'request.course.fn'}) {
+  if (($ENV{'request.course.fn'}) && (!$ENV{'form.forceselect'})) {
       my $fn=$ENV{'request.course.fn'};
       if (-e "$fn.db") {
-          if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
+          if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
 # ------------------------------------------------------------------- Hash tied
               my $firstres=$hash{'map_start_'.$requrl};
               my $lastres=$hash{'map_finish_'.$requrl};
@@ -167,14 +171,7 @@ sub handler {
 
                   @rows=();
 
-                  &tracetable(0,$firstres,'&'.$lastres.'&');
-                  if ($hash{'src_'.$lastres}) {
-                     my $brepriv=
-                        &Apache::lonnet::allowed('bre',$hash{'src_'.$lastres});
-                     if (($brepriv eq '2') || ($brepriv eq 'F')) {
-                        $rows[$#rows+1]=''.$lastres;
-		     }
-		  }
+                  &tracetable(0,$firstres,'&');
 
 # ------------------------------------------------------------ Add to symb list
 
@@ -242,6 +239,13 @@ sub handler {
                                }
 			      }
                               my $output=Apache::lonnet::ssi($src,%posthash);
+                              if ($target eq 'tex') {
+				  $output =~ s/^([^&]+)\\begin{document}//;
+				  $output =~ s/\\end{document}//;
+				  $output = '\parbox{\minipagewidth}{ '.$output.' }';
+                                  #some additional cleanup necessary for LateX (due to limitations of table environment 
+				  $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
+			      }
                               my $parser=HTML::TokeParser->new(\$output);
                               my $token;
                               my $thisdir=$src;
@@ -362,8 +366,21 @@ sub handler {
 			  if ($nforms) {
 			      $r->print('<form method="post" action="'.
 					$requrl.'">');
-			  }		      
+			  }
+		      } else {
+			  $r->print('\documentclass[letterpaper]{article}
+                                 \newcommand{\keephidden}[1]{}           
+                                 \usepackage[dvips]{graphicx}
+                                 \usepackage{epsfig}
+                                 \usepackage{calc}
+                                 \usepackage{longtable}
+                                 \begin{document}');
+		      }
 # ----------------------------------------------------------------- Start table
+		      if ($target eq 'tex') {
+			  $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
+			  if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
+		      } else {
 			  $r->print('<table cols="'.$lcm.'" border="0">');
 		      }
                       for ($i=0;$i<=$#rows;$i++) {
@@ -434,6 +451,15 @@ sub handler {
                                   $r->print($ssibody{$rid});	
 				  unless ($target eq 'tex') {
 				      $r->print('</font>');
+                                  }
+                                  if ($ENV{'course.'.
+                                      $ENV{'request.course.id'}.
+                                      '.pageseparators'} eq 'yes') {
+                                      unless($target eq 'tex') {
+                                          $r->print('<hr />');
+                                      } else {
+                                          $r->print('\hline');
+                                      }
 				  }
 			      } elsif ($cellemb{$rid} eq 'img') {
                                   $r->print('>'.$metainfo.'<img src="'.
@@ -444,15 +470,23 @@ sub handler {
                               }
 			      unless ($target eq 'tex') {
 				  $r->print('</td>');
+			      } else {
+                                  for (my $incol=1;$incol<=$avespan;$incol++) {
+				      $r->print(' & ');
+				  }
 			      }
                           }
 			      unless ($target eq 'tex') {
 				  $r->print('</tr>');
+			      } else {
+				  $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
 			      }
 		        }
                       }
 		      unless ($target eq 'tex') {
 			  $r->print("\n</table>");
+		      } else {
+			  $r->print('\end{longtable}');
 		      }
 # ---------------------------------------------------------------- Submit, etc.
                       if ($nforms) {
@@ -460,14 +494,18 @@ sub handler {
 	                  '<input name="all_submit" value="Submit All" type="'.
 			  (($nforms>1)?'submit':'hidden').'"></input></form>');
                       }
-                      $r->print('</body>'.&Apache::lonxml::xmlend());
+		      unless ($target eq 'tex') {
+			  $r->print('</body>'.&Apache::lonxml::xmlend());
+		      } else {
+			  $r->print('\end{document}'.$number_of_columns);
+		      }
 # -------------------------------------------------------------------- End page
                   }                  
 # ------------------------------------------------------------- End render page
               } else {
                   $r->content_type('text/html');
                   $r->send_http_header;
-		  $r->print('<html><body>Page undefined.</body></html>');
+                  &Apache::lonsequence::viewmap($r,$requrl);
               }
 # ------------------------------------------------------------------ Untie hash
               unless (untie(%hash)) {
@@ -480,8 +518,10 @@ sub handler {
           }
       } 
   }
-  $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
-  return HTTP_NOT_ACCEPTABLE; 
+  $r->content_type('text/html');
+  $r->send_http_header;
+  &Apache::lonsequence::viewmap($r,$requrl);
+  return OK; 
 }
 
 1;