--- rat/lonsequence.pm	2009/05/16 23:21:12	1.39
+++ rat/lonsequence.pm	2014/12/15 00:46:52	1.45
@@ -2,7 +2,7 @@
 #
 # Sequence Handler
 #
-# $Id: lonsequence.pm,v 1.39 2009/05/16 23:21:12 bisitz Exp $
+# $Id: lonsequence.pm,v 1.45 2014/12/15 00:46:52 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,6 +36,7 @@ use Apache::lonnet;
 use Apache::Constants qw(:common :http REDIRECT);
 use GDBM_File;
 use LONCAPA::map();
+use LONCAPA;
 use Apache::lonpageflip();
 use Apache::loncommon();
 use Apache::groupsort();
@@ -109,7 +110,8 @@ onClick="javascript:select_group()" />
 </form>   
 ENDSELECT
     my $diropendb = 
-    "/home/httpd/perl/tmp/$env{'user.domain'}\_$env{'user.name'}_sel_res.db";
+  LONCAPA::tempdir() .
+    "$env{'user.domain'}\_$env{'user.name'}_sel_res.db";
         if (tie(%selhash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
 	    if ($env{'form.launch'} eq '1') {
 	       &start_fresh_session();
@@ -131,13 +133,13 @@ ENDSELECT
                 .'</p><br />');
     }
     my $idx=0;
-    foreach (&attemptread(&Apache::lonnet::filelocation('',$url))) {
-	if (defined($_)) {
+    foreach my $entry (&attemptread(&Apache::lonnet::filelocation('',$url))) {
+	if (defined($entry)) {
             $idx++;
             if ($successtied) { 
 		$r->print('<form name="form'.$idx.'">');
             }
-	    my ($title,$url)=split(/\:/,$_);
+	    my ($title,$url)=split(/\:/,$entry);
 	    $title = &LONCAPA::map::qtescape($title);
 	    unless ($title) { $title=(split(/\//,$url))[-1] };
             my $enc_title = &HTML::Entities::encode($title,'\'"<>&');
@@ -182,12 +184,12 @@ ENDCHECKBOX
 
 # ----------------------------------------------------------- Clean out selhash
 sub start_fresh_session {
-    foreach (keys %selhash) {
-	if ($_ =~ /^pre_/) {
-	    delete $selhash{$_};
+    foreach my $item (keys(%selhash)) {
+	if ($item =~ /^pre_/) {
+	    delete $selhash{$item};
 	}
-	if ($_ =~ /^store/) {
-	    delete $selhash{$_};
+	if ($item =~ /^store/) {
+	    delete $selhash{$item};
 	}
     }
 }
@@ -217,6 +219,7 @@ sub handler {
   my $dismapid='';
   my $exitdisid = '';
   my $arrow_dir = '';
+  my $is_encrypted = '';
 
   if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) {
        my $last;
@@ -247,6 +250,9 @@ sub handler {
 	       if (!$env{'request.role.adv'}) {
 		   $randomout = $bighash{'randomout_'.$disid};
 	       }
+               if (!$env{'request.role.adv'}) {
+                   $is_encrypted = $bighash{'encrypted_'.$disid};
+               }
            } elsif (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                     &GDBM_READER(),0640)) {
                $last=$hash{'last_known'};
@@ -266,6 +272,9 @@ sub handler {
 		   if (!$env{'request.role.adv'}) {
 		       $randomout = $bighash{'randomout_'.$disid};
 		   }
+                   if (!$env{'request.role.adv'}) {
+                       $is_encrypted = $bighash{'encrypted_'.$disid};
+                   }
                }
  	   }
            $exitdisid = $disid;
@@ -279,30 +288,38 @@ sub handler {
 # now either disurl is set (going to first page), or we need another display
    if ($disurl) {
 # -------------------------------------------------- Has first or last resource
+      my $showdisurl = $disurl;
+      if ($is_encrypted) {
+          $showdisurl = &Apache::lonenc::encrypted($disurl);
+      }
       &Apache::lonnet::symblist($requrl,$disurl => [$disurl,$dismapid],
 				'last_known' => [$disurl,$dismapid]); 
       &Apache::loncommon::content_type($r,'text/html');
       $r->header_out(Location => &Apache::lonnet::absolute_url($ENV{'SERVER_NAME'}).
-                                 $disurl);
+                                 $showdisurl);
       return REDIRECT;
    } else {
        &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;
        if ($exitdisid eq '' && $arrow_dir ne '') {
            my %lt =&Apache::lonlocal::texthash(
-                   'back' => 'beginning',
-                   'forward' => 'end',
                    'nere' => 'Next resource could not be displayed',
                    'goba' => 'Go Back',
-                   'nacc' => 'Navigate Course Content',
+                   'nacc' => 'Course Contents',
                           );
-           my $warnmsg = &mt('As all folders and sequences ');
+           if (&Apache::loncommon::course_type() eq 'Community') {
+               $lt{'nav'} = &mt('Community Contents');
+           }
+           my $warnmsg;
            if ($arrow_dir eq 'forward') {
-               $warnmsg .= &mt('following the current resource were empty').',';
+               $warnmsg = &mt('As all folders and sequences '
+                             .'following the current resource were empty, '
+                             .'you have now reached the end of the course.');
            } elsif ($arrow_dir eq 'back') {
-               $warnmsg .= &mt('preceding the current resource were empty').',';
+               $warnmsg = &mt('As all folders and sequences '
+                             .'preceding the current resource were empty, '
+                             .'you have now reached the beginning of the course.');
            }
-           $warnmsg .= &mt('you have now reached the').' '.$lt{$arrow_dir}.' '.&mt('of the course.');
            my $start_page=
 	       &Apache::loncommon::start_page('Empty Folder/Sequence');
            my $end_page=