--- rat/lonpage.pm	2000/10/02 21:33:40	1.10
+++ rat/lonpage.pm	2019/08/11 14:16:59	1.128
@@ -1,19 +1,54 @@
 # The LearningOnline Network with CAPA
 # Page Handler
 #
-# (TeX Content Handler
+# $Id: lonpage.pm,v 1.128 2019/08/11 14:16:59 raeburn Exp $
 #
-# 05/29/00,05/30 Gerd Kortemeyer)
-# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
-# 10/02 Gerd Kortemeyer
+# 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/
+#
+###
+
+
+
 
 package Apache::lonpage;
 
 use strict;
 use Apache::Constants qw(:common :http);
-use Apache::lonnet();
+use Apache::lonnet;
+use Apache::loncommon();
+use Apache::lonhtmlcommon;
+use Apache::lonxml();
+use Apache::lonlocal;
+use Apache::lonmenu;
+use Apache::lonhomework;
+use Apache::lonparmset;
+use Apache::lonenc();
 use HTML::TokeParser;
 use GDBM_File;
+use Apache::lonsequence;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+ 
 
 # -------------------------------------------------------------- Module Globals
 my %hash;
@@ -37,48 +72,70 @@ sub euclid {
 sub tracetable {
     my ($sofar,$rid,$beenhere)=@_;
     my $further=$sofar;
+    my $randomout=0;
+    unless ($env{'request.role.adv'}) {
+        $randomout = $hash{'randomout_'.$rid};
+    }
     unless ($beenhere=~/\&$rid\&/) {
-       $beenhere.=$rid.'&';  
-
-       if (defined($hash{'is_map_'.$rid})) {
-           if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
-               (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
-              my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
-	      $sofar=
-                &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
-                '&'.$frid.'&');
-              $sofar++;
-              if ($hash{'src_'.$frid}) {
-               my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
-               if (($brepriv eq '2') || ($brepriv eq 'F')) {
-                 if (defined($rows[$sofar])) {
-                   $rows[$sofar].='&'.$frid;
-                 } else {
-                   $rows[$sofar]=$frid;
-                 }
-	       }
-	      }
-	   }
-       } else {
-          $sofar++;
-          if ($hash{'src_'.$rid}) {
-           my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
-           if (($brepriv eq '2') || ($brepriv eq 'F')) {
-             if (defined($rows[$sofar])) {
-               $rows[$sofar].='&'.$rid;
-             } else {
-               $rows[$sofar]=$rid;
-             }
-	   }
-          }
-       }
-
-       if (defined($hash{'to_'.$rid})) {
-          map {
-              my $now=&tracetable($sofar,$hash{'goesto_'.$_},$beenhere);
-              if ($now>$further) { $further=$now; }
-          } split(/\,/,$hash{'to_'.$rid});
-       }
+        $beenhere.=$rid.'&';
+        unless ($randomout) {
+            if (defined($hash{'is_map_'.$rid})) {
+                if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
+                    (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
+                    my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
+	            $sofar=
+                       &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
+                       '&'.$frid.$beenhere);
+                    $sofar++;
+                    if ($hash{'src_'.$frid}) {
+                        my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
+                        if (($brepriv eq '2') || ($brepriv eq 'F')) {
+                            if (defined($rows[$sofar])) {
+                                $rows[$sofar].='&'.$frid;
+                            } else {
+                                $rows[$sofar]=$frid;
+                            }
+	                }
+	            }
+	        }
+            } else {
+                $sofar++;
+                if ($hash{'src_'.$rid}) {
+                    my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
+                    if (($brepriv eq '2') || ($brepriv eq 'F')) {
+                        if (defined($rows[$sofar])) {
+                            $rows[$sofar].='&'.$rid;
+                        } else {
+                            $rows[$sofar]=$rid;
+                        }
+	            }
+                }
+            }
+        }
+
+        if (defined($hash{'to_'.$rid})) {
+	    my $mincond=1;
+            my $next='';
+            foreach (split(/\,/,$hash{'to_'.$rid})) {
+                my $thiscond=
+      &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
+                if ($thiscond>=$mincond) {
+		    if ($next) {
+		        $next.=','.$_.':'.$thiscond;
+                    } else {
+                        $next=$_.':'.$thiscond;
+		    }
+                    if ($thiscond>$mincond) { $mincond=$thiscond; }
+	        }
+            }
+            foreach (split(/\,/,$next)) {
+                my ($linkid,$condval)=split(/\:/,$_);
+                if ($condval>=$mincond) {
+                    my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
+                    if ($now>$further) { $further=$now; }
+	        }
+            }
+        }
     }
     return $further;
 }
@@ -91,37 +148,75 @@ sub handler {
 # ------------------------------------------- Set document type for header only
 
   if ($r->header_only) {
-       if ($ENV{'browser.mathml'}) {
-           $r->content_type('text/xml');
+       if ($env{'browser.mathml'}) {
+           &Apache::loncommon::content_type($r,'text/xml');
        } else {
-           $r->content_type('text/html');
+           &Apache::loncommon::content_type($r,'text/html'); 
        }
        $r->send_http_header;
        return OK;
    }
-
-  my $requrl=$r->uri;
+  
+   &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+                                          ['forceselect','launch']);
+  my $number_of_columns = 1;
+  my $requrl=$r->uri;  
+  my $target = $env{'form.grade_target'};
+
+# Short term solution: define target as 'tex_answer' when retrieving answers
+# for resources in a .page when generating printouts.
+# A better long-term fix would be to modify the way problem rendering, and 
+# answer rendering are retrieved for individual resources when printing a .page,
+# so rendered problem and answer are sequential for individual resources in 
+# the .page
+#
+  if ($target eq 'answer') {
+      if ($env{'form.answer_output_mode'} eq 'tex') {
+          $target = 'tex_answer';
+      }
+  }
+#  &Apache::lonnet::logthis("Got a target of $target");
+  if ($target eq 'meta') {
+      &Apache::loncommon::content_type($r,'text/html');
+      $r->send_http_header;
+      return OK;
+  }
 # ----------------------------------------------------------------- Tie db file
-  if ($ENV{'request.course.fn'}) {
-      my $fn=$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)) {
+          my %buttonshide;
+          my $hostname = $r->hostname();
+          if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
 # ------------------------------------------------------------------- Hash tied
               my $firstres=$hash{'map_start_'.$requrl};
               my $lastres=$hash{'map_finish_'.$requrl};
               if (($firstres) && ($lastres)) {
+# ------------------------------------------------------------- Countdown Timer
+                  my $now = time;
+                  my ($pagefirstaccess,%hastimeleft,%countdowndisp,%donebutton,
+                      %donebtnextra,%buttonbytime,$donetime,$symbtosetdone);
+                  my ($pagesymb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
+                  unless ($pagesymb) {
+                      $pagesymb=&Apache::lonnet::symbread($requrl);
+                  }
+                  if ($pagesymb && ($courseid ne '') && ($domain ne '') && ($name ne '')) {
+                      my %times=&Apache::lonnet::get('firstaccesstimes',
+                                                     [$courseid."\0".$pagesymb],
+                                                     $domain,$name);
+                      if ($times{$courseid."\0".$pagesymb} =~ /^\d+$/) {
+                          $pagefirstaccess = $times{$courseid."\0".$pagesymb};
+                          if ($pagefirstaccess && $env{'form.LC_interval_done'} eq 'true') {
+                              $donetime = $now - $pagefirstaccess;
+                          }
+                      }
+                  }
+
 # ----------------------------------------------------------------- Render page
 
                   @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
 
@@ -130,9 +225,32 @@ sub handler {
                   for ($i=0;$i<=$#rows;$i++) {
 		     if ($rows[$i]) {
                         my @colcont=split(/\&/,$rows[$i]);
-                        map {
-                           $symbhash{$hash{'src_'.$_}}='';
-		        } @colcont;
+                        foreach my $rid (@colcont) {
+			    my ($mapid,$resid)=split(/\./,$rid);
+			    $symbhash{$hash{'src_'.$rid}}=
+				[$hash{'src_'.$rid},$resid];
+                            if (($donetime) && ($symbtosetdone eq '')) {
+                                my $src = $hash{'src_'.$rid};
+                                if ($hash{'encrypted_'.$rid}) {
+                                    $src=&Apache::lonenc::encrypted($src);
+                                }
+                                my ($mapid,$resid)=split(/\./,$rid);
+                                my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
+                                if ($src =~ /$LONCAPA::assess_re/) {
+                                    my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
+                                    if (@interval > 1) {
+                                        if (($interval[1] eq 'map') && ($pagefirstaccess)) {
+                                            my ($timelimit) = ($interval[0] =~ /^(\d+)/);
+                                            if ($timelimit) {
+                                                if ($pagefirstaccess + $timelimit > $now) {
+                                                    $symbtosetdone = $symb;
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+		        }
 		     }
 		  }
                   &Apache::lonnet::symblist($requrl,%symbhash);
@@ -143,6 +261,11 @@ sub handler {
                   my $lcm=1;
                   my $contents=0;
                   my $nforms=0;
+                  my $nuploads=0;
+                  my $ntimers=0;
+                  my %turninpaths;
+                  my %multiresps;
+                  my $turninparent;
                   
                   my %ssibody=();
                   my %ssibgcolor=();
@@ -150,7 +273,9 @@ sub handler {
                   my %ssilink=();
                   my %ssivlink=();
                   my %ssialink=();
+     
                   my %cellemb=();
+                  my %cellexternal=();
 
                   my $allscript='';
                   my $allmeta='';
@@ -159,6 +284,16 @@ sub handler {
                   my $xmlheader='';
                   my $xmlbody='';
 
+# ---------------------------------------------------------- Handle Done button
+
+                  # Set the event timer to zero if the "done button" was clicked.
+                  if ($donetime && $symbtosetdone) {
+                      &Apache::lonparmset::storeparm_by_symb_inner($symbtosetdone,'0_interval',
+                                                                   2,$donetime,'date_interval',
+                                                                   $name,$domain);
+                      undef($env{'form.LC_interval_done'});
+                  }
+
 # --------------------------------------------- Get SSI output, post parameters
 
                   for ($i=0;$i<=$#rows;$i++) {
@@ -166,29 +301,87 @@ sub handler {
 		      $contents++;
                       my @colcont=split(/\&/,$rows[$i]);
                       $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
-                      map {
+                      foreach (@colcont) {
                           my $src=$hash{'src_'.$_};
-                          $src=~/\.(\w+)$/;
-                          $cellemb{$_}=Apache::lonnet::fileembstyle($1);
-                          if ($cellemb{$_} eq 'ssi') {
+                          my $plainsrc = $src;
+                          my ($extension)=($src=~/\.(\w+)$/);
+			  $cellexternal{$_}=($hash{'ext_'.$_} eq 'true:');
+			  if ($hash{'encrypted_'.$_}) {
+			      $src=&Apache::lonenc::encrypted($src);
+			  }
+                          my ($mapid,$resid)=split(/\./,$_);
+                          my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
+                          unless ($env{'request.role.adv'}) {
+                              $buttonshide{$symb} = &Apache::lonnet::EXT("resource.0.buttonshide",$symb);
+                          }
+                          $cellemb{$_}=
+			      &Apache::loncommon::fileembstyle($extension);
+                          if ($cellexternal{$_}) {
+                              unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+                                  $ssibody{$_} = <<ENDEXT;
+<iframe src="$src" width="100%">No iframe support!</iframe>
+ENDEXT
+                              }
+                          } elsif ($cellemb{$_} eq 'ssi') {
 # --------------------------------------------------------- This is an SSI cell
-			      my $prefix=$_.'_';
-                              my %posthash=('request.prefix' => $prefix);
-                              if (($ENV{'form.'.$prefix.'submit'}) 
-                               || ($ENV{'form.all_submit'})) {
-                               map {
-				  if ($_=~/^form.$prefix/) {
-				      my $name=$_;
-                                      $name=~s/^form.$prefix//;
-                                      $posthash{$name}=$ENV{$_};
+			      my $prefix='p_'.$_.'_';
+                              my $idprefix= 'p_'.join('_',($mapid,$resid,''));
+                              my %posthash=('request.prefix' => $prefix,
+					    'LONCAPA_INTERNAL_no_discussion' => 'true',
+					    'symb' => $symb);
+			      if (($env{'form.grade_target'} eq 'tex') ||
+                                 ($env{'form.answer_output_mode'} eq 'tex')) {
+				  $posthash{'grade_target'}=$env{'form.grade_target'};
+				  $posthash{'textwidth'}=$env{'form.textwidth'};
+				  $posthash{'problem_split'}=$env{'form.problem_split'};
+				  $posthash{'latex_type'}=$env{'form.latex_type'};
+				  $posthash{'rndseed'}=$env{'form.rndseed'};
+                                  $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'};
+			      }
+			      my $submitted=$env{'form.all_submit_pressed'};
+			      if (!$submitted) {
+				  foreach my $key (keys(%env)) {
+				      if ($key=~/^\Qform.$prefix\Esubmit_(.+)_pressed$/) {
+                                          if ($env{$key}) {
+                                              $submitted=1;
+                                              last;
+                                          }
+				      }
                                   }
-                               } keys %ENV;
+			      }
+                              if ($submitted) {
+				  foreach my $key (keys(%env)) {
+				      if ($key=~/^\Qform.$prefix\E/) {
+					  my $name=$key;
+					  $name=~s/^\Qform.$prefix\E//;
+					  $posthash{$name}=$env{$key};
+                                      }
+				  }
+				  if ($env{'form.all_submit_pressed'}) {
+				      $posthash{'all_submit'}='yes';
+				  }
 			      }
                               my $output=Apache::lonnet::ssi($src,%posthash);
+			      $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
+                              if (($target eq 'tex') || ($target eq 'tex_answer')) {
+				  $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 $matheditor;
+                              if ($output =~ /\Qjavascript:LC_mathedit_HWVAL_\E/) {
+                                  $matheditor = 'dragmath';
+                              } elsif ($output =~ /LCmathField/) {
+                                  $matheditor = 'lcmath';
+                              }
                               my $parser=HTML::TokeParser->new(\$output);
                               my $token;
+                              my $thisdir=$src;
                               my $bodydef=0;
                               my $thisxml=0;
+                              my @rlinks=();
                               if ($output=~/\?xml/) {
                                  $isxml=1;
                                  $thisxml=1;
@@ -196,9 +389,22 @@ sub handler {
          /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
                                  $xmlheader=$1;
 			      }
-                              while (($bodydef==0) &&
-                                     ($token=$parser->get_token)) {
-				  if ($token->[1] eq 'body') {
+                              while ($token=$parser->get_token) {
+				if ($token->[0] eq 'S') {
+                                  if ($token->[1] eq 'a') {
+				      if ($token->[2]->{'href'}) {
+                                         $rlinks[$#rlinks+1]=
+					     $token->[2]->{'href'};
+				      }
+				  } elsif ($token->[1] eq 'img') {
+                                         $rlinks[$#rlinks+1]=
+					     $token->[2]->{'src'};
+				  } elsif ($token->[1] eq 'embed') {
+                                         $rlinks[$#rlinks+1]=
+					     $token->[2]->{'src'};
+				  } elsif ($token->[1] eq 'base') {
+				      $thisdir=$token->[2]->{'href'};
+				  } elsif ($token->[1] eq 'body') {
 				      $bodydef=1;
                                       $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
                                       $ssitext{$_}=$token->[2]->{'text'};
@@ -208,119 +414,456 @@ sub handler {
                                       if ($thisxml) {
 					  $xmlbody=$token->[4];
                                       }
-                                  }
-                                  if ($token->[1] eq 'meta') {
+                                  } elsif ($token->[1] eq 'meta') {
+				    if ($token->[4] !~ m:/>$:) {
 				      $allmeta.="\n".$token->[4].'</meta>';
-                                  }
-                                  if ($token->[1] eq 'script') {
+				    } else {
+				      $allmeta.="\n".$token->[4];
+				    }
+                                  } elsif (($token->[1] eq 'script') &&
+                                           ($bodydef==0)) {
 				      $allscript.="\n\n"
                                                 .$parser->get_text('/script');
                                   }
-                              }
+			        }
+			      }
                               if ($output=~/\<body[^\>]*\>(.*)/si) {
                                  $output=$1; 
                               }
                               $output=~s/\<\/body\>.*//si;
                               if ($output=~/\<form/si) {
+                                  my $hastimer; 
 				  $nforms++;
                                   $output=~s/\<form[^\>]*\>//gsi;
                                   $output=~s/\<\/form[^\>]*\>//gsi;
+                                  if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
+                                      $nuploads++;
+                                  }
+                                  if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*accessbutton/) {
+                                      $ntimers++;
+                                      $hastimer = 1;
+                                  }
+                                  $output=~
+				      s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
+                                  $output=~
+                                      s/\<((?:input|select|button|textarea)[^\>]+)id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 id="$idprefix$2" $3\>/gsi;
+                                  $output=~
+                                      s/(\Qthis.form.elements['\E)(HW(?:VAL|CHK)_[^']+\'\]\.(?:value=\'|checked))/$1$prefix$2/gsi;
+                                  if ($hastimer) {
+                                      $output=~
+                                          s/\<(input[^\>]+name=\Q"$prefix\Eaccessbutton"[^\>]+)(?:\Qdocument.markaccess.submit();\E)([^\>]*)\>/\<$1pageTimer(this.form,'$prefix')$2\>/gsi;
+                                      $output=~  s/\<(input[^\>]+name=\Q"$prefix\Emarkaccess"[^\>]+value=["'])(?:yes)(['"][^\>]*)\>/\<$1$2\>/gsi;
+                                  }
+                                  if ($matheditor eq 'dragmath') {
+                                      $output=~
+                                          s/(\Qjavascript:LC_mathedit_\E)(HWVAL_)([^'"]+?)(\(['"]*)(\QHWVAL_\E\3['"]\)\;void\(0\)\;)/$1$idprefix$2$3$4$idprefix$5/g;
+                                      $output=~
+                                          s/(function\s+LC_mathedit_)(HWVAL_)([^'"]+?)(\s+\(LCtextline\))/$1$idprefix$2$3$4/g;
+                                  } elsif ($matheditor eq 'lcmath') {
+                                      $output=~
+                                          s/(var\s+LCmathField\s+=\s+document\.getElementById\(['"])([^'"]+?)(['"]\)\;)/$1$idprefix$2$3/g;
+                                  }
+                                  $output=~
+                                      s/(\Q<div id="msg_\E)(\Qsubmit_\E)([^"]*)(\Q" style="display:none">\E)/<input type="hidden" name="$prefix$2$3_pressed" id="$idprefix$2$3_pressed" value="" \/>$1$idprefix$2$3$4/g;
+                                  $output=~
+                                      s/(\Q<td class="LC_status_\E)(\Qsubmit_\E)([^\"]*)(\s*[^\"]*"\>)/$1$idprefix$2$3$4/g;
+                                  if ($nuploads) {
+                                       ($turninpaths{$prefix},$multiresps{$prefix}) = 
+                                           &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
+                                       if ($turninparent eq '') {
+                                           $turninparent = $turninpaths{$prefix};
+                                           $turninparent =~ s{(/[^/]+)$}{}; 
+                                       }
+                                  }
+                                  $output=~
+                                      s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
+                                  $output=~
+                                      s/\<(input[^\>]+\Qonfocus=\"javascript:disableAutoComplete\E)\(\'([^\']+)\'\)(;\")/\<$1('$idprefix$2')$3/gsi;
+                                  unless ($hastimer) {
+                                      if ($plainsrc =~ /$LONCAPA::assess_re/) {
+                                          %Apache::lonhomework::history =
+                                              &Apache::lonnet::restore($symb,$courseid,$domain,$name);
+                                          my $type = 'problem';
+                                          if ($extension eq 'task') {
+                                              $type = 'Task';
+                                          }
+                                          my ($status,$accessmsg,$slot_name,$slot) =
+                                              &Apache::lonhomework::check_slot_access('0',$type,$symb);
+                                          undef(%Apache::lonhomework::history);
+                                          my $probstatus = &Apache::lonnet::EXT("resource.0.problemstatus",$symb);
+                                          if (($status eq 'CAN_ANSWER') || (($status eq 'CANNOT_ANSWER') && 
+                                              (($probstatus eq 'no') || ($probstatus eq 'no_feedback_ever'))) ||
+                                              (($status eq 'NOT_YET_VIEWED') && ($posthash{'markaccess'} eq 'yes'))) {
+                                              my ($slothastime,$timerhastime);
+                                              if ($slot_name ne '') {
+                                                  if (ref($slot) eq 'HASH') {
+                                                      if (($slot->{'starttime'} < $now) &&
+                                                          ($slot->{'endtime'} > $now)) {
+                                                          $slothastime = $now - $slot->{'endtime'};
+                                                      }
+                                                  }
+                                              }
+                                              my $duedate = &Apache::lonnet::EXT("resource.0.duedate",$symb);
+                                              my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
+                                              if (@interval > 1) {
+                                                  my $first_access;
+                                                  if ($interval[1] eq 'map') {
+                                                      my $ignorecache;
+                                                      if ($env{'form.'.$prefix.'markaccess'} eq 'yes') {
+                                                          $ignorecache = 1;
+                                                      }
+                                                      $first_access=&Apache::lonnet::get_first_access($interval[1],undef,$pagesymb,$ignorecache);
+                                                      if (($first_access) && (!$pagefirstaccess)) {
+                                                          $pagefirstaccess = $first_access;
+                                                      }
+                                                  } else {
+                                                      $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
+                                                  }
+                                                  if ($first_access > 0) {
+                                                      my ($timelimit) = ($interval[0] =~ /^(\d+)/);
+                                                      if ($timelimit) {
+                                                          my $timeremains = $timelimit + $first_access - $now;
+                                                          if ($timeremains > 0) {
+                                                              $timerhastime = $timeremains;
+                                                          }
+                                                      }
+                                                  }
+                                              }
+                                              if (($duedate && $duedate > $now) ||
+                                                  (!$duedate && $timerhastime > 0) ||
+                                                  ($slot_name ne '' && $slothastime)) {
+                                                  if ((@interval > 1 && $timerhastime) ||
+                                                      ($type eq 'Task' && $slothastime)) {
+                                                      $countdowndisp{$symb} = 'inline';
+                                                      if ((@interval > 1) && ($timerhastime)) {
+                                                          $hastimeleft{$symb} = $timerhastime;
+                                                          if ($pagefirstaccess) {
+                                                              my ($timelimit,$usesdone,$donebuttontext,$proctor,$secret);
+                                                              ($timelimit,my $donesuffix) = split(/_/,$interval[0],2);
+                                                              if ($donesuffix =~ /^done\:([^\:]+)\:(.*)$/) {
+                                                                  $usesdone = 'done';
+                                                                  $donebuttontext = $1;
+                                                                  (undef,$proctor,$secret) = split(/_/,$2);
+                                                              } elsif ($donesuffix =~ /^done(|_.+)$/) {
+                                                                  $donebuttontext = &mt('Done');
+                                                                  ($usesdone,$proctor,$secret) = split(/_/,$donesuffix);
+                                                              }
+                                                              if ($usesdone eq 'done') {
+                                                                  $donebutton{$symb} = $timelimit;
+                                                                  push(@{$buttonbytime{$timelimit}},$symb);
+                                                                  $donebtnextra{$symb} = {
+                                                                                              text    => $donebuttontext,
+                                                                                              proctor => $proctor,
+                                                                                              secret  => $secret,
+                                                                                              type    => $interval[1],
+                                                                                         };
+                                                              }
+                                                          }
+                                                      } else {
+                                                          $hastimeleft{$symb} = $slothastime;
+                                                      }
+                                                  } else {
+                                                      $hastimeleft{$symb} = $duedate - $now;
+                                                      $countdowndisp{$symb} = 'none';
+                                                  }
+                                                  unless ($donebutton{$symb}) {
+                                                      $donebutton{$symb} = 0;
+                                                  }
+                                              }
+                                          }
+                                      }
+                                  }
                               }
+                              $thisdir=~s/\/[^\/]*$//;
+			      foreach (@rlinks) {
+				  unless (($_=~/^https?\:\/\//i) ||
+					  ($_=~/^\//) ||
+					  ($_=~/^javascript:/i) ||
+					  ($_=~/^mailto:/i) ||
+					  ($_=~/^\#/)) {
+				      my $newlocation=
+				    &Apache::lonnet::hreflocation($thisdir,$_);
+                     $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
+				  }
+			      }
+# -------------------------------------------------- Deal with Applet codebases
+  $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
 			      $ssibody{$_}=$output;
-
 # ---------------------------------------------------------------- End SSI cell
                           }
-                      } @colcont;
+                      }
                      } 
                   }
                   unless ($contents) {
-                      $r->content_type('text/html');
+                      &Apache::loncommon::content_type($r,'text/html');
                       $r->send_http_header;
-                      $r->print('<html><body>Empty page.</body></html>');
+                      $r->print(&Apache::loncommon::start_page(undef,undef,
+							       {'force_register' => 1,}));
+                      $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
+                      $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
+				&Apache::loncommon::end_page());
                   } else {
 # ------------------------------------------------------------------ Build page
 
 # ---------------------------------------------------------------- Send headers
-                      if ($isxml) {
-			  $r->content_type('text/xml');
-                          $r->send_http_header;
-                          $r->print($xmlheader);
-		      } else {
-                          $r->content_type('text/html');
-                          $r->send_http_header;
-                          $r->print('<html>');
-		      }
+		      unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+			  if ($isxml) {
+			      &Apache::loncommon::content_type($r,'text/xml');
+			  } else {
+			      &Apache::loncommon::content_type($r,'text/html');
+			  }
+			  $r->send_http_header;
 # ------------------------------------------------------------------------ Head
-                      $r->print("\n<head>\n".$allmeta);
-                      if ($allscript) {
-			  $r->print("\n<script>\n".$allscript."\n</script>\n");
-                      }
-                      $r->print("\n</head>\n");
+			  if ($allscript) {
+			      $allscript = 
+				  "\n".'<script type="text/javascript">'."\n".
+				  $allscript.
+				  "\n</script>\n";
+			  }
+                          if (($nforms) && ($nuploads)) {
+                              $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps).
+                                            '<script type="text/javascript" '.
+                                            'src="/res/adm/includes/file_upload.js"></script>';
+                          }
+                          if (($nforms) && (&Apache::lonhtmlcommon::htmlareabrowser())) {
+                              my %textarea_args = (
+                                  dragmath => 'math',
+                              );
+                              $allscript .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
+                          }
+                          if ($ntimers) {
+                              $allscript .= '<script type="text/javascript">'."\n".
+                                            '// <![CDATA['."\n".
+                                            'function pageTimer(form,prefix) {'."\n".
+                                            "   form.elements[prefix+'markaccess'].value = 'yes';\n".
+                                            "   form.submit();\n".
+                                            '}'."\n".
+                                            '// ]]>'.
+                                            "\n</script>\n";
+                          }
+                          if (keys(%hastimeleft)) {
+                              my (%uniquetimes,%uniquedisplays);
+                              foreach my $item (values(%hastimeleft)) {
+                                  if (exists($uniquetimes{$item})) {
+                                      $uniquetimes{$item} ++; 
+                                  } else {
+                                      $uniquetimes{$item} = 1;
+                                  }
+                              }
+                              if (scalar(keys(%uniquetimes)) == 1) {
+                                  my (%uniquedisplays,%uniquedones,$currdisp,$donebuttontime,
+                                      $donebuttonextras);
+                                  if (keys(%countdowndisp)) {
+                                      foreach my $item (values(%countdowndisp)) {
+                                          if (exists($uniquedisplays{$item})) {
+                                              $uniquedisplays{$item} ++;
+                                          } else {
+                                              $uniquedisplays{$item} = 1;
+                                          }
+                                      }
+                                      my @countdowndisplay = keys(%uniquedisplays);
+                                      if (scalar(@countdowndisplay) == 1) {
+                                          $currdisp = $countdowndisplay[0];
+                                      }
+                                  }
+                                  if (keys(%donebutton)) {
+                                      foreach my $item (values(%donebutton)) {
+                                          if (exists($uniquedones{$item})) {
+                                              $uniquedones{$item} ++;
+                                          } else {
+                                              $uniquedones{$item} = 1;
+                                          }
+                                      }
+                                      my @donebuttons = sort { $ <=> $b } (keys(%uniquedones));
+                                      if (scalar(@donebuttons) == 1) {
+                                          if ($donebuttons[0]) {
+                                              $donebuttontime = $donebuttons[0];
+                                              if (ref($buttonbytime{$donebuttontime}) eq 'ARRAY') {
+                                                  $donebuttonextras = $donebtnextra{$buttonbytime{$donebuttontime}->[0]};
+                                              }
+                                          }
+                                      }
+                                  }
+                                  &add_countdown_timer($currdisp,$donebuttontime,$donebuttonextras);
+                              }
+                          }
+                          my $pagebuttonshide;
+                          if (keys(%buttonshide)) {
+                              my %uniquebuttonhide;
+                              foreach my $item (values(%buttonshide)) {
+                                  if (exists($uniquebuttonhide{$item})) {
+                                      $uniquebuttonhide{$item} ++;
+                                  } else {
+                                      $uniquebuttonhide{$item} = 1;
+                                  }
+                              }
+                              if (keys(%uniquebuttonhide) == 1) {
+                                  if (lc((keys(%uniquebuttonhide))[0]) eq 'yes') {
+                                      $pagebuttonshide = 'yes';
+                                  }
+                              }
+                          }
 # ------------------------------------------------------------------ Start body
-                      if ($isxml) {
-                          $r->print($xmlbody);
-                      } else {
-			  $r->print('<body bgcolor="#FFFFFF">');
-                      }
+			  $r->print(&Apache::loncommon::start_page(undef,$allscript,
+								   {'force_register' => 1,
+								    'bgcolor'        => '#ffffff',
+								    'hide_buttons'   => $pagebuttonshide}));
 # ------------------------------------------------------------------ Start form
-                      if ($nforms) {
-			  $r->print('<form method="post" action="'.
-				    $requrl.'">');
-                      }
+			  if ($nforms) {
+			      my $fmtag = '<form name="lonhomework" method="post"  enctype="multipart/form-data"';
+                              if ($nuploads) {
+                                  my $multi;
+                                  if ($nuploads > 1) {
+                                      $multi = 1;
+                                  }
+                                  $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
+                              }
+                              $fmtag .= ' action="'.
+					&Apache::lonenc::check_encrypt($requrl)
+					.'" id="LC_page">';
+                              $r->print($fmtag);
+			  }
+		      } elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
+			  #  I think this is not needed as the header
+			  # will be put in for each of the page parts
+			  # by the londefdef.pm now that we are opening up
+			  # the parts of a page.
+			  #$r->print('\documentclass{article}
+                          #       \newcommand{\keephidden}[1]{}           
+                          #       \usepackage[dvips]{graphicx}
+                          #       \usepackage{epsfig}
+                          #       \usepackage{calc}
+                          #       \usepackage{longtable}
+                          #       \begin{document}');
+		      }
 # ----------------------------------------------------------------- Start table
-                      $r->print('<table cols="'.$lcm.'" border="0">');
+		      if (($target eq 'tex') || ($target eq 'tex_answer')) {
+#			 #  $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
+			  if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
+		      } else {
+			  $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
+		      }
+# generate rows
                       for ($i=0;$i<=$#rows;$i++) {
 			if ($rows[$i]) {
-                          $r->print("\n<tr>");
+			    unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+				$r->print("\n<tr>");
+			    }
                           my @colcont=split(/\&/,$rows[$i]);
                           my $avespan=$lcm/($#colcont+1);
                           for ($j=0;$j<=$#colcont;$j++) {
                               my $rid=$colcont[$j];
-                              $r->print('<td colspan="'.$avespan.'"');
-                              if ($cellemb{$rid} eq 'ssi') {
-				  if ($ssibgcolor{$rid}) {
-                                     $r->print(' bgcolor="'.
-                                               $ssibgcolor{$rid}.'"');
-                                  }
-                                  $r->print('><font');
-                                  if ($ssitext{$rid}) {
-				     $r->print(' text="'.$ssitext{$rid}.'"');
-                                  }
-                                  if ($ssilink{$rid}) {
-				     $r->print(' link="'.$ssilink{$rid}.'"');
-                                  }
-                                  if ($ssitext{$rid}) {
-				     $r->print(' vlink="'.$ssivlink{$rid}.'"');
-                                  }
-                                  if ($ssialink{$rid}) {
-				     $r->print(' alink="'.$ssialink{$rid}.'"');
-                                  }
-                            
-                                  $r->print('>'.$ssibody{$rid}.'</font>');
-                              } elsif ($cellemb{$rid} eq 'img') {
-                                  $r->print('><img src="'.
-                                    $hash{'src_'.$rid}.'"></img>');
+			      my $metainfo =&get_buttons(\%hash,$rid,\%buttonshide,$hostname).'<br />';
+			    unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+				$r->print('<td colspan="'.$avespan.'"');
+			    }
+                              if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) {
+				  unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+				      if ($ssibgcolor{$rid}) {
+					  $r->print(' bgcolor="'.
+						    $ssibgcolor{$rid}.'"');
+				      }
+				      $r->print('>'.$metainfo.'<font');
+		    
+				      if ($ssitext{$rid}) {
+					  $r->print(' text="'.$ssitext{$rid}.'"');
+				      }
+				      if ($ssilink{$rid}) {
+					  $r->print(' link="'.$ssilink{$rid}.'"');
+				      }
+				      if ($ssitext{$rid}) {
+					  $r->print(' vlink="'.$ssivlink{$rid}.'"');
+				      }
+				      if ($ssialink{$rid}) {
+					  $r->print(' alink="'.$ssialink{$rid}.'"');
+				      }             
+				      $r->print('>');
+				  }
+                                  unless (($cellexternal{$rid}) && 
+                                          ($target eq 'tex') && ($target eq 'tex_answer')) {
+                                      $r->print($ssibody{$rid});
+                                  }
+				  unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+				      $r->print('</font>');
+                                  }
+                                  if ($env{'course.'.
+                                      $env{'request.course.id'}.
+                                      '.pageseparators'} eq 'yes') {
+                                      unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+                                          $r->print('<hr />');
+                                      } 
+				  }
+			      } elsif ($cellemb{$rid} eq 'img') {
+                                  $r->print('>'.$metainfo.'<img src="'.
+                                    $hash{'src_'.$rid}.'" />');
+			      } elsif ($cellemb{$rid} eq 'emb') {
+                                  $r->print('>'.$metainfo.'<embed src="'.
+                                    $hash{'src_'.$rid}.'"></embed>');
+                              } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
+                                  $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />');
+                                  unless ($cellemb{$rid} eq 'wrp') {
+                                      $r->print(&mt('It is recommended that you use an up-to-date virus scanner before handling this file.'));
+                                  }
+                                  $r->print('</p><p><table>'.
+                                            &Apache::londocs::entryline(0,
+                                                                        &mt("Click to download or use your browser's Save Link function"),
+                                                                        '/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).
+                                                                        '</table></p><br />');
+                              }
+			      unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+				  $r->print('</td>');
+			      } else {
+#                                  for (my $incol=1;$incol<=$avespan;$incol++) {
+#				      $r->print(' & ');
+#				  }
 			      }
-                              $r->print('</td>');
                           }
-                          $r->print('</tr>');
+			      unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+				  $r->print('</tr>');
+			      } else {
+#				  $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
+			      }
 		        }
                       }
-                      $r->print("\n</table>");
+		      unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+			  $r->print("\n</table>");
+		      } else {
+#			  $r->print('\end{longtable}\strut');
+		      }
 # ---------------------------------------------------------------- Submit, etc.
                       if ($nforms) {
+                          my $class;
+                          if ($nforms > 1) {
+                              $class = ' class="LC_hwk_submit"';
+                              if ($ntimers) {
+                                  $nforms = 1;
+                                  $class = '';
+                              }
+                          }
                           $r->print(
-	                  '<input name="all_submit" value="Submit All" type="'.
-			  (($nforms>1)?'submit':'hidden').'"></input></form>');
+	                  '<input name="all_submit" value="'.&mt('Submit All').'" type="'.
+			  (($nforms>1)?'submit':'hidden').'"'.$class.' id="all_submit" />'.
+                          '<input type="hidden" name="all_submit_pressed" '.
+                          'id="all_submit_pressed" value="" />'.
+                          '<div id="msg_all_submit" style="display:none">'.
+                          &mt('Processing your submission ...').'</div></form>');
                       }
-                      $r->print('</body></html>');
+		      unless (($target eq 'tex') || ($target eq 'tex_answer')) {
+			  $r->print(&Apache::loncommon::end_page({'discussion'
+								      => 1,}));
+		      } else {
+			  $r->print('\end{document}'.$number_of_columns);
+		      }
+		      &Apache::lonnet::symblist($requrl,%symbhash);
+		      my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
+		      &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
 # -------------------------------------------------------------------- End page
                   }                  
 # ------------------------------------------------------------- End render page
               } else {
-                  $r->content_type('text/html');
+                  &Apache::loncommon::content_type($r,'text/html');
                   $r->send_http_header;
-		  $r->print('<html><body>Page undefined.</body></html>');
+                  &Apache::lonsequence::viewmap($r,$requrl);
               }
 # ------------------------------------------------------------------ Untie hash
               unless (untie(%hash)) {
@@ -333,16 +876,289 @@ sub handler {
           }
       } 
   }
-  $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
-  return HTTP_NOT_ACCEPTABLE; 
+  &Apache::loncommon::content_type($r,'text/html');
+  $r->send_http_header;
+  &Apache::lonsequence::viewmap($r,$requrl);
+  return OK; 
+}
+
+sub get_buttons {
+    my ($hash,$rid,$buttonshide,$hostname) = @_;
+
+    my $metainfo = '';
+    my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
+    my ($mapid,$resid)=split(/\./,$rid);
+    my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
+					  $resid,
+					  $hash->{'src_'.$rid});
+    unless ($env{'request.role.adv'}) {
+        if ($buttonshide->{$symb} eq 'yes') {
+            return;
+        }
+    }
+    if ($hash->{'encrypted_'.$rid}) {
+	$symb=&Apache::lonenc::encrypted($symb);
+	$esrc=&Apache::lonenc::encrypted($esrc);
+    }
+    if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
+        && $hash->{'src_'.$rid} !~ m{^https?://}
+	&& !$env{'request.enc'}
+	&& ($env{'request.role.adv'}
+	    || !$hash->{'encrypted_'.$rid})) { 
+	$metainfo .='<a name="'.&escape($symb).'" />'.
+	    '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" target="LONcatInfo">'.
+            '<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
+            ' alt="'.&mt('Show Metadata').'"'.
+            ' title="'.&mt('Show Metadata').'" />'.
+	    '</a>';
+    }
+    if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
+        ($hash->{'src_'.$rid} !~ m{^https?://})) {
+        $metainfo .= '<a href="/adm/evaluate?postdata='.
+	    &escape($esrc).
+	    '" target="LONcatInfo">'.
+            '<img src="/res/adm/pages/eval.png" class="LC_icon"'.
+            ' alt="'.&mt('Provide my evaluation of this resource').'"'.
+            ' title="'.&mt('Provide my evaluation of this resource').'" />'.
+	    '</a>';
+    }
+    if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
+	($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
+
+	if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
+	    $metainfo.=
+		'<a href="/adm/grades?symb='.&escape($symb).
+#               '&command=submission" target="LONcatInfo">'.
+		'&command=submission">'.
+                '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
+                ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
+                ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
+		'</a>'.
+		'<a href="/adm/grades?symb='.&escape($symb).
+#               '&command=gradingmenu" target="LONcatInfo">'.
+		'&command=gradingmenu">'.
+                '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
+                ' alt="'.&mt('Content Grades').'"'.
+                ' title="'.&mt('Content Grades').'" />'.
+		'</a>';
+	}
+	if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
+	    $metainfo.=
+		'<a href="/adm/parmset?symb='.&escape($symb).
+#               '" target="LONcatInfo">'.
+		'" >'.
+                '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
+                ' alt="'.&mt('Content Settings').'"'.
+                ' title="'.&mt('Content Settings').'" />'.
+		'</a>';
+	}
+    }
+    if ($env{'request.course.id'}) {
+        my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+        my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+        my $file=&Apache::lonnet::declutter($hash->{'src_'.$rid});
+        my $editbutton = '';
+        if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
+            my ($cfile,$home,$switchserver,$forceedit,$forceview) =
+                &Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb);
+            if ($cfile ne '') {
+                my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver,
+                                                                     $forceedit,1,$symb,undef,
+                                                                     &escape($env{'form.title'}),
+                                                                     $hostname);
+                if ($jscall) {
+                    $editbutton = 1;
+                    my $icon = 'pcstr.png';
+                    my $label = &mt('Edit');
+                    my $title = &mt('Edit this resource');
+                    my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
+                              ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
+                    $metainfo .= '&nbsp;<a href="javascript:'.$jscall.';">'.$pic.'</a>';
+                }
+            }
+        }
+        if ((!$editbutton) && ($file=~/$LONCAPA::assess_re/)) {
+            my $url = &Apache::lonnet::clutter($file);
+            my $viewsrcbutton;
+            if ((&Apache::lonnet::allowed('cre','/')) &&
+                (&Apache::lonnet::metadata($url,'sourceavail') eq 'open')) {
+                $viewsrcbutton = 1;
+            } elsif (&Apache::lonnet::allowed('vxc',$env{'request.course.id'})) {
+                if ($url =~ m{^\Q/res/$cdom/\E($LONCAPA::match_username)/}) {
+                    my $auname = $1;
+                    if (($env{'request.course.adhocsrcaccess'} ne '') &&
+                        (grep(/^\Q$auname\E$/,split(/,/,$env{'request.course.adhocsrcaccess'})))) {
+                        $viewsrcbutton = 1;
+                    }
+                }
+            }
+            if ($viewsrcbutton) {
+                my $icon = 'pcstr.png';
+                my $label = &mt('View Source');
+                my $title = &mt('View source code');
+                my $jsrid = $rid;
+                $jsrid =~ s/\./_/g;
+                my $showurl = &escape(&Apache::lonenc::check_encrypt($url));
+                my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
+                          ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
+                $metainfo .= '&nbsp;<a href="javascript:open_source_'.$jsrid.'();">'.$pic.'</a>'."\n".
+                             '<script type="text/javascript">'."\n".
+                             "function open_source_$jsrid() {\n".
+                             "  sourcewin=window.open('/adm/source?inhibitmenu=yes&viewonly=1&filename=$showurl','LONsource',".
+                             "'height=500,width=600,resizable=yes,location=no,menubar=no,toolbar=no,scrollbars=yes');\n".
+                             "}\n".
+                             "</script>\n";
+            }
+        }
+    }
+    return $metainfo;
 }
 
+sub add_countdown_timer {
+    my ($currdisp,$donebuttontime,$donebuttonextras) = @_;
+    my ($collapse,$expand,$alttxt,$title,$donebutton);
+    if ($currdisp eq 'inline') {
+        $collapse = '&#9658;&nbsp;';
+    } else {
+        $expand = '&#9668;&nbsp;';
+    }
+    if ($donebuttontime) {
+        my ($type,$proctor,$donebuttontext);
+        if (ref($donebuttonextras) eq 'HASH') {
+            $proctor = $donebuttonextras->{'proctor'};
+            $donebuttontext = $donebuttonextras->{'text'};
+            $type = $donebuttonextras->{'type'};
+        } else {
+            $donebuttontext = &mt('Done');
+            $type = 'map';
+        }
+        $donebutton = 
+            &Apache::lonmenu::done_button_js($type,'','',$proctor,$donebuttontext);
+    }
+    unless ($env{'environment.icons'} eq 'iconsonly') {
+        $alttxt = &mt('Timer');
+        $title = $alttxt.'&nbsp;';
+    }
+    my $desc = &mt('Countdown to due date/time');
+    my $output = <<END;
+$donebutton
+<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
+<span id="ddcountcollapse" class="LC_menubuttons_inline_text">
+$collapse
+</span></a>
+<span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span>
+<a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
+<span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span>
+<img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a>
+END
+    &Apache::lonhtmlcommon::clear_breadcrumb_tools();
+    &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$output);
+    return;
+}
+
+
 1;
 __END__
 
 
+=head1 NAME
+
+Apache::lonpage - Page Handler
+
+=head1 SYNOPSIS
+
+Invoked by /etc/httpd/conf/srm.conf:
+
+ <LocationMatch "^/res/.*\.page$>
+ SetHandler perl-script
+ PerlHandler Apache::lonpage
+ </LocationMatch>
+
+=head1 INTRODUCTION
+
+This module renders a .page resource.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+=head1 HANDLER SUBROUTINE
+
+This routine is called by Apache and mod_perl.
+
+=over 4
+
+=item *
+
+set document type for header only
+
+=item *
+
+tie db file
+
+=item *
+
+render page
+
+=item *
+
+add to symb list
+
+=item *
+
+page parms
+
+=item *
+
+Get SSI output, post parameters
+
+=item *
+
+SSI cell rendering
+
+=item *
+
+Deal with Applet codebases
+
+=item *
+
+Build page
+
+=item *
+
+send headers
+
+=item *
+
+start body
+
+=item *
+
+start form
+
+=item *
+
+start table
+
+=item *
+
+submit element, etc, render page, untie hash
+
+=back
+
+=head1 OTHER SUBROUTINES
+
+=over 4
+
+=item *
+
+euclid() : Euclid's method for determining the greatest common denominator.
+
+=item *
 
+tracetable() : Build page table.
 
+=back
 
+=cut