--- loncom/interface/loncommon.pm	2011/12/08 01:34:50	1.1031
+++ loncom/interface/loncommon.pm	2012/03/17 20:11:26	1.1059
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.1031 2011/12/08 01:34:50 www Exp $
+# $Id: loncommon.pm,v 1.1059 2012/03/17 20:11:26 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -154,6 +154,8 @@ sub ssi_with_retries {
 # ----------------------------------------------- Filetypes/Languages/Copyright
 my %language;
 my %supported_language;
+my %latex_language;		# For choosing hyphenation in <transl..>
+my %latex_language_bykey;	# for choosing hyphenation from metadata
 my %cprtag;
 my %scprtag;
 my %fe; my %fd; my %fm;
@@ -186,11 +188,15 @@ BEGIN {
             while (my $line = <$fh>) {
                 next if ($line=~/^\#/);
                 chomp($line);
-                my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$line));
+                my ($key,$two,$country,$three,$enc,$val,$sup,$latex)=(split(/\t/,$line));
                 $language{$key}=$val.' - '.$enc;
                 if ($sup) {
                     $supported_language{$key}=$sup;
                 }
+		if ($latex) {
+		    $latex_language_bykey{$key} = $latex;
+		    $latex_language{$two} = $latex;
+		}
             }
             close($fh);
         }
@@ -1186,7 +1192,7 @@ sub help_open_topic {
     my ($topic, $text, $stayOnPage, $width, $height, $imgid) = @_;
     $text = "" if (not defined $text);
     $stayOnPage = 0 if (not defined $stayOnPage);
-    $width = 350 if (not defined $width);
+    $width = 500 if (not defined $width);
     $height = 400 if (not defined $height);
     my $filename = $topic;
     $filename =~ s/ /_/g;
@@ -1197,7 +1203,9 @@ sub help_open_topic {
     $topic=~s/\W/\_/g;
 
     if (!$stayOnPage) {
-	$link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
+	$link = "javascript:openMyModal('/adm/help/${filename}.hlp',$width,$height,'yes');";
+    } elsif ($stayOnPage eq 'popup') {
+        $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
     } else {
 	$link = "/adm/help/${filename}.hlp";
     }
@@ -1230,27 +1238,22 @@ sub help_open_topic {
 # This is a quicky function for Latex cheatsheet editing, since it 
 # appears in at least four places
 sub helpLatexCheatsheet {
-    my ($topic,$text,$not_author) = @_;
+    my ($topic,$text,$not_author,$stayOnPage) = @_;
     my $out;
     my $addOther = '';
     if ($topic) {
-	$addOther = '<span>'.&Apache::loncommon::help_open_topic($topic,&mt($text),
-							       undef, undef, 600).
-								   '</span> ';
+	$addOther = '<span>'.&help_open_topic($topic,&mt($text),$stayOnPage, undef, 600).'</span> ';
     }
     $out = '<span>' # Start cheatsheet
 	  .$addOther
           .'<span>'
-	  .&Apache::loncommon::help_open_topic('Greek_Symbols',&mt('Greek Symbols'),
-					       undef,undef,600)
+	  .&help_open_topic('Greek_Symbols',&mt('Greek Symbols'),$stayOnPage,undef,600)
 	  .'</span> <span>'
-	  .&Apache::loncommon::help_open_topic('Other_Symbols',&mt('Other Symbols'),
-					       undef,undef,600)
+	  .&help_open_topic('Other_Symbols',&mt('Other Symbols'),$stayOnPage,undef,600)
 	  .'</span>';
     unless ($not_author) {
         $out .= ' <span>'
-	       .&Apache::loncommon::help_open_topic('Authoring_Output_Tags',&mt('Output Tags'),
-	                                            undef,undef,600)
+	       .&help_open_topic('Authoring_Output_Tags',&mt('Output Tags'),$stayOnPage,undef,600)
 	       .'</span>';
     }
     $out .= '</span>'; # End cheatsheet
@@ -1745,6 +1748,7 @@ Inputs: $workbook
 
 Returns: $format, a hash reference.
 
+
 =cut
 
 ###############################################################
@@ -2853,6 +2857,7 @@ database which holds them.
 
 Uses global $thesaurus_db_file.
 
+
 =cut
 
 ###############################################################
@@ -3230,11 +3235,29 @@ sub languagedescription {
 	    ($supported_language{$code}?' ('.&mt('interface available').')':'');
 }
 
+=pod
+
+=item * &plainlanguagedescription
+
+Returns both the plain language description (e.g. 'Creoles and Pidgins, English-based (Other)')
+and the language character encoding (e.g. ISO) separated by a ' - ' string.
+
+=cut
+
 sub plainlanguagedescription {
     my $code=shift;
     return $language{$code};
 }
 
+=pod
+
+=item * &supportedlanguagecode
+
+Returns the supported language code (e.g. sptutf maps to pt) given a language
+code.
+
+=cut
+
 sub supportedlanguagecode {
     my $code=shift;
     return $supported_language{$code};
@@ -3242,6 +3265,35 @@ sub supportedlanguagecode {
 
 =pod
 
+=item * &latexlanguage()
+
+Given a language key code returns the correspondnig language to use
+to select the correct hyphenation on LaTeX printouts.  This is undef if there
+is no supported hyphenation for the language code.
+
+=cut
+
+sub latexlanguage {
+    my $code = shift;
+    return $latex_language{$code};
+}
+
+=pod
+
+=item * &latexhyphenation()
+
+Same as above but what's supplied is the language as it might be stored
+in the metadata.
+
+=cut
+
+sub latexhyphenation {
+    my $key = shift;
+    return $latex_language_bykey{$key};
+}
+
+=pod
+
 =item * &copyrightids() 
 
 returns list of all copyrights
@@ -3965,18 +4017,25 @@ sub findallcourses {
             if ($tstart) {
                 next if ($tstart > $now);
             }
-            my ($cdom,$cnum,$sec,$cnumpart,$secpart,$role,$realsec);
+            my ($cdom,$cnum,$sec,$cnumpart,$secpart,$role);
             (undef,$cdom,$cnumpart,$secpart) = split(/\//,$entry);
+            my $value = $trole.'/'.$cdom.'/';
             if ($secpart eq '') {
                 ($cnum,$role) = split(/_/,$cnumpart); 
                 $sec = 'none';
-                $realsec = '';
+                $value .= $cnum.'/';
             } else {
                 $cnum = $cnumpart;
                 ($sec,$role) = split(/_/,$secpart);
-                $realsec = $sec;
+                $value .= $cnum.'/'.$sec;
+            }
+            if (ref($courses{$cdom.'_'.$cnum}{$sec}) eq 'ARRAY') {
+                unless (grep(/^\Q$value\E$/,@{$courses{$cdom.'_'.$cnum}{$sec}})) {
+                    push(@{$courses{$cdom.'_'.$cnum}{$sec}},$value);
+                }
+            } else {
+                @{$courses{$cdom.'_'.$cnum}{$sec}} = ($value);
             }
-            $courses{$cdom.'_'.$cnum}{$sec} = $trole.'/'.$cdom.'/'.$cnum.'/'.$realsec;
         }
     } else {
         foreach my $key (keys(%env)) {
@@ -3994,11 +4053,19 @@ sub findallcourses {
                     if ($now>$endtime) { $active=0; }
                 }
                 if ($active) {
+                    my $value = $role.'/'.$cdom.'/'.$cnum.'/';
                     if ($sec eq '') {
                         $sec = 'none';
+                    } else {
+                        $value .= $sec;
+                    }
+                    if (ref($courses{$cdom.'_'.$cnum}{$sec}) eq 'ARRAY') {
+                        unless (grep(/^\Q$value\E$/,@{$courses{$cdom.'_'.$cnum}{$sec}})) {
+                            push(@{$courses{$cdom.'_'.$cnum}{$sec}},$value);
+                        }
+                    } else {
+                        @{$courses{$cdom.'_'.$cnum}{$sec}} = ($value);
                     }
-                    $courses{$cdom.'_'.$cnum}{$sec} = 
-                                     $role.'/'.$cdom.'/'.$cnum.'/'.$sec;
                 }
             }
         }
@@ -4091,34 +4158,38 @@ sub blockcheck {
             if ($otheruser) {
                 # Resource belongs to user other than current user.
                 # Assemble privs for that user, and check for 'evb' priv.
-                my ($trole,$tdom,$tnum,$tsec);
-                my $entry = $live_courses{$course}{$sec};
-                if ($entry =~ /^cr/) {
-                    ($trole,$tdom,$tnum,$tsec) = 
-                      ($entry =~ m|^(cr/$match_domain/$match_username/\w+)\./($match_domain)/($match_username)/?(\w*)$|);
-                } else {
-                    ($trole,$tdom,$tnum,$tsec) = split(/\//,$entry);
-                }
-                my ($spec,$area,$trest,%allroles,%userroles);
-                $area = '/'.$tdom.'/'.$tnum;
-                $trest = $tnum;
-                if ($tsec ne '') {
-                    $area .= '/'.$tsec;
-                    $trest .= '/'.$tsec;
-                }
-                $spec = $trole.'.'.$area;
-                if ($trole =~ /^cr/) {
-                    &Apache::lonnet::custom_roleprivs(\%allroles,$trole,
-                                                      $tdom,$spec,$trest,$area);
-                } else {
-                    &Apache::lonnet::standard_roleprivs(\%allroles,$trole,
-                                                       $tdom,$spec,$trest,$area);
-                }
-                my ($author,$adv) = &Apache::lonnet::set_userprivs(\%userroles,\%allroles);
-                if ($userroles{'user.priv.'.$checkrole} =~ /evb\&([^\:]*)/) {
-                    if ($1) {
-                        $no_userblock = 1;
-                        last;
+                my (%allroles,%userroles);
+                if (ref($live_courses{$course}{$sec}) eq 'ARRAY') {
+                    foreach my $entry (@{$live_courses{$course}{$sec}}) { 
+                        my ($trole,$tdom,$tnum,$tsec);
+                        if ($entry =~ /^cr/) {
+                            ($trole,$tdom,$tnum,$tsec) = 
+                                ($entry =~ m|^(cr/$match_domain/$match_username/\w+)\./($match_domain)/($match_username)/?(\w*)$|);
+                        } else {
+                           ($trole,$tdom,$tnum,$tsec) = split(/\//,$entry);
+                        }
+                        my ($spec,$area,$trest);
+                        $area = '/'.$tdom.'/'.$tnum;
+                        $trest = $tnum;
+                        if ($tsec ne '') {
+                            $area .= '/'.$tsec;
+                            $trest .= '/'.$tsec;
+                        }
+                        $spec = $trole.'.'.$area;
+                        if ($trole =~ /^cr/) {
+                            &Apache::lonnet::custom_roleprivs(\%allroles,$trole,
+                                                              $tdom,$spec,$trest,$area);
+                        } else {
+                            &Apache::lonnet::standard_roleprivs(\%allroles,$trole,
+                                                                $tdom,$spec,$trest,$area);
+                        }
+                    }
+                    my ($author,$adv) = &Apache::lonnet::set_userprivs(\%userroles,\%allroles);
+                    if ($userroles{'user.priv.'.$checkrole} =~ /evb\&([^\:]*)/) {
+                        if ($1) {
+                            $no_userblock = 1;
+                            last;
+                        }
                     }
                 }
             } else {
@@ -4983,7 +5054,6 @@ body {
 a:focus,
 a:focus img {
   color: red;
-  background: yellow;
 }
 
 form, .inline {
@@ -5078,35 +5148,36 @@ div.LC_confirm_box .LC_success img {
 }
 
 .LC_discussion {
-  background: $tabbg;
+  background: $data_table_dark;
   border: 1px solid black;
   margin: 2px;
 }
 
-.LC_disc_action_links_bar {
-  background: $tabbg;
-  border: none;
-  margin: 4px;
-}
-
 .LC_disc_action_left {
+  background: $sidebg;
   text-align: left;
+  padding: 4px;
+  margin: 2px;
 }
 
 .LC_disc_action_right {
+  background: $sidebg;
   text-align: right;
+  padding: 4px;
+  margin: 2px;
 }
 
 .LC_disc_new_item {
   background: white;
   border: 2px solid red;
-  margin: 2px;
+  margin: 4px;
+  padding: 4px;
 }
 
 .LC_disc_old_item {
   background: white;
-  border: 1px solid black;
-  margin: 2px;
+  margin: 4px;
+  padding: 4px;
 }
 
 table.LC_pastsubmission {
@@ -5228,7 +5299,7 @@ td.LC_table_cell_checkbox {
   vertical-align: middle;
 }
 
-li.LC_menubuttons_inline_text img,a {
+li.LC_menubuttons_inline_text img {
   cursor:pointer;
   text-decoration: none;
 }
@@ -6083,7 +6154,6 @@ div.LC_createcourse {
   display:none;
 }
 
-a:hover,
 ol.LC_primary_menu a:hover,
 ol#LC_MenuBreadcrumbs a:hover,
 ol#LC_PathBreadcrumbs a:hover,
@@ -6317,6 +6387,12 @@ ul.LC_TabContent li.active a {
   background:#FFFFFF;
   outline: none;
 }
+
+ul.LC_TabContent li.goback {
+  float: left;
+  border-left: none;
+}
+
 #maincoursedoc {
   clear:both;
 }
@@ -6566,6 +6642,10 @@ a#LC_content_toolbar_changefolder_toggle
   background-image:url(/res/adm/pages/open-all-folders.gif);
 }
 
+a#LC_content_toolbar_edittoplevel {
+  background-image:url(/res/adm/pages/edittoplevel.gif);
+}
+
 ul#LC_toolbar li a:hover {
   background-position: bottom center;
 }
@@ -6739,8 +6819,24 @@ sub headtag {
 	&& !$args->{'only_body'}
 	&& !$args->{'frameset'}) {
 	$result .= &help_menu_js();
+        $result.=&modal_window();
+        $result.=&togglebox_script();
+        $result.=&wishlist_window();
+        $result.=&LCprogressbarUpdate_script();
+    } else {
+        if ($args->{'add_modal'}) {
+           $result.=&modal_window();
+        }
+        if ($args->{'add_wishlist'}) {
+           $result.=&wishlist_window();
+        }
+        if ($args->{'add_togglebox'}) {
+           $result.=&togglebox_script();
+        }
+        if ($args->{'add_progressbar'}) {
+           $result.=&LCprogressbarUpdate_script();
+        }
     }
-    $result.=&modal_window();
     if (ref($args->{'redirect'})) {
 	my ($time,$url,$inhibit_continue) = @{$args->{'redirect'}};
 	$url = &Apache::lonenc::check_encrypt($url);
@@ -6954,9 +7050,31 @@ sub end_page {
     return $result;
 }
 
+sub wishlist_window {
+    return(<<'ENDWISHLIST');
+<script type="text/javascript">
+// <![CDATA[
+// <!-- BEGIN LON-CAPA Internal
+function set_wishlistlink(title, path) {
+    if (!title) {
+        title = document.title;
+        title = title.replace(/^LON-CAPA /,'');
+    }
+    if (!path) {
+        path = location.pathname;
+    }
+    Win = window.open('/adm/wishlist?mode=newLink&setTitle='+title+'&setPath='+path,
+                      'wishlistNewLink','width=560,height=350,scrollbars=0');
+}
+// END LON-CAPA Internal -->
+// ]]>
+</script>
+ENDWISHLIST
+}
+
 sub modal_window {
     return(<<'ENDMODAL');
-<script type="text/javascript" lang="javascript">
+<script type="text/javascript">
 // <![CDATA[
 // <!-- BEGIN LON-CAPA Internal
 var modalWindow = {
@@ -7000,14 +7118,213 @@ ENDMODAL
 }
 
 sub modal_link {
-    my ($link,$linktext,$width,$height,$target,$scrolling)=@_;
+    my ($link,$linktext,$width,$height,$target,$scrolling,$title)=@_;
     unless ($width) { $width=480; }
     unless ($height) { $height=400; }
     unless ($scrolling) { $scrolling='yes'; }
-    return '<a href="'.$link.'" target="'.$target.'" onclick="openMyModal(\''.$link.'\','.$width.','.$height.',\''.$scrolling.'\'); return false;">'.
+    return '<a href="'.$link.'" target="'.$target.'" title="'.$title.'" onclick="openMyModal(\''.$link.'\','.$width.','.$height.',\''.$scrolling.'\'); return false;">'.
            $linktext.'</a>';
 }
 
+sub modal_adhoc_script {
+    my ($funcname,$width,$height,$content)=@_;
+    return (<<ENDADHOC);
+<script type="text/javascript">
+// <![CDATA[
+        var $funcname = function()
+        {
+                modalWindow.windowId = "myModal";
+                modalWindow.width = $width;
+                modalWindow.height = $height;
+                modalWindow.content = '$content';
+                modalWindow.open();
+        };  
+// ]]>
+</script>
+ENDADHOC
+}
+
+sub modal_adhoc_inner {
+    my ($funcname,$width,$height,$content)=@_;
+    my $innerwidth=$width-20;
+    $content=&js_ready(
+               &start_page('Dialog',undef,{'only_body'=>1,'bgcolor'=>'#FFFFFF'}).
+                 &start_scrollbox($width.'px',$innerwidth.'px',$height.'px').
+                    $content.
+                 &end_scrollbox().
+               &end_page()
+             );
+    return &modal_adhoc_script($funcname,$width,$height,$content);
+}
+
+sub modal_adhoc_window {
+    my ($funcname,$width,$height,$content,$linktext)=@_;
+    return &modal_adhoc_inner($funcname,$width,$height,$content).
+           "<a href=\"javascript:$funcname();void(0);\">".$linktext."</a>";
+}
+
+sub modal_adhoc_launch {
+    my ($funcname,$width,$height,$content)=@_;
+    return &modal_adhoc_inner($funcname,$width,$height,$content).(<<ENDLAUNCH);
+<script type="text/javascript">
+// <![CDATA[
+$funcname();
+// ]]>
+</script>
+ENDLAUNCH
+}
+
+sub modal_adhoc_close {
+    return (<<ENDCLOSE);
+<script type="text/javascript">
+// <![CDATA[
+modalWindow.close();
+// ]]>
+</script>
+ENDCLOSE
+}
+
+sub togglebox_script {
+   return(<<ENDTOGGLE);
+<script type="text/javascript"> 
+// <![CDATA[
+function LCtoggleDisplay(id,hidetext,showtext) {
+   link = document.getElementById(id + "link").childNodes[0];
+   with (document.getElementById(id).style) {
+      if (display == "none" ) {
+          display = "inline";
+          link.nodeValue = hidetext;
+        } else {
+          display = "none";
+          link.nodeValue = showtext;
+       }
+   }
+}
+// ]]>
+</script>
+ENDTOGGLE
+}
+
+sub start_togglebox {
+    my ($id,$heading,$headerbg,$hidetext,$showtext)=@_;
+    unless ($heading) { $heading=''; } else { $heading.=' '; }
+    unless ($showtext) { $showtext=&mt('show'); }
+    unless ($hidetext) { $hidetext=&mt('hide'); }
+    unless ($headerbg) { $headerbg='#FFFFFF'; }
+    return &start_data_table().
+           &start_data_table_header_row().
+           '<td bgcolor="'.$headerbg.'">'.$heading.
+           '[<a id="'.$id.'link" href="javascript:LCtoggleDisplay(\''.$id.'\',\''.$hidetext.'\',\''.
+           $showtext.'\')">'.$showtext.'</a>]</td>'.
+           &end_data_table_header_row().
+           '<tr id="'.$id.'" style="display:none""><td>';
+}
+
+sub end_togglebox {
+    return '</td></tr>'.&end_data_table();
+}
+
+sub LCprogressbar_script {
+   my ($id)=@_;
+   return(<<ENDPROGRESS);
+<script type="text/javascript">
+// <![CDATA[
+\$('#progressbar$id').progressbar({
+  value: 0,
+  change: function(event, ui) {
+    var newVal = \$(this).progressbar('option', 'value');
+    \$('.pblabel', this).text(LCprogressTxt);
+  }
+});
+// ]]>
+</script>
+ENDPROGRESS
+}
+
+sub LCprogressbarUpdate_script {
+   return(<<ENDPROGRESSUPDATE);
+<style type="text/css">
+.ui-progressbar { position:relative; }
+.pblabel { position: absolute; width: 100%; text-align: center; line-height: 1.9em; }
+</style>
+<script type="text/javascript">
+// <![CDATA[
+var LCprogressTxt='---';
+
+function LCupdateProgress(percent,progresstext,id) {
+   LCprogressTxt=progresstext;
+   \$('#progressbar'+id).progressbar('value',percent);
+}
+// ]]>
+</script>
+ENDPROGRESSUPDATE
+}
+
+my $LClastpercent;
+my $LCidcnt;
+my $LCcurrentid;
+
+sub LCprogressbar {
+    my ($r)=(@_);
+    $LClastpercent=0;
+    $LCidcnt++;
+    $LCcurrentid=$$.'_'.$LCidcnt;
+    my $starting=&mt('Starting');
+    my $content=(<<ENDPROGBAR);
+<p>
+  <div id="progressbar$LCcurrentid">
+    <span class="pblabel">$starting</span>
+  </div>
+</p>
+ENDPROGBAR
+    &r_print($r,$content.&LCprogressbar_script($LCcurrentid));
+}
+
+sub LCprogressbarUpdate {
+    my ($r,$val,$text)=@_;
+    unless ($val) { 
+       if ($LClastpercent) {
+           $val=$LClastpercent;
+       } else {
+           $val=0;
+       }
+    }
+    if ($val<0) { $val=0; }
+    if ($val>100) { $val=0; }
+    $LClastpercent=$val;
+    unless ($text) { $text=$val.'%'; }
+    $text=&js_ready($text);
+    &r_print($r,<<ENDUPDATE);
+<script type="text/javascript">
+// <![CDATA[
+LCupdateProgress($val,'$text','$LCcurrentid');
+// ]]>
+</script>
+ENDUPDATE
+}
+
+sub LCprogressbarClose {
+    my ($r)=@_;
+    $LClastpercent=0;
+    &r_print($r,<<ENDCLOSE);
+<script type="text/javascript">
+// <![CDATA[
+\$("#progressbar$LCcurrentid").hide('slow'); 
+// ]]>
+</script>
+ENDCLOSE
+}
+
+sub r_print {
+    my ($r,$to_print)=@_;
+    if ($r) {
+      $r->print($to_print);
+      $r->rflush();
+    } else {
+      print($to_print);
+    }
+}
+
 sub html_encode {
     my ($result) = @_;
 
@@ -7015,6 +7332,7 @@ sub html_encode {
     
     return $result;
 }
+
 sub js_ready {
     my ($result) = @_;
 
@@ -7066,7 +7384,7 @@ sub start_scrollbox {
 }
 
 sub end_scrollbox {
-    return '</td></tr></table>';
+    return '</div></td></tr></table>';
 }
 
 sub simple_error_page {
@@ -8345,7 +8663,8 @@ sub get_standard_codeitems {
 
 =item * sorted_slots()
 
-Sorts an array of slot names in order of slot start time (earliest first). 
+Sorts an array of slot names in order of an optional sort key,
+default sort is by slot start time (earliest first). 
 
 Inputs:
 
@@ -8355,15 +8674,16 @@ slotsarr  - Reference to array of unsort
 
 slots     - Reference to hash of hash, where outer hash keys are slot names.
 
+sortkey   - Name of key in inner hash to be sorted on (e.g., starttime).
+
 =back
 
 Returns:
 
 =over 4
 
-sorted   - An array of slot names sorted by the start time of the slot.
-
-=back
+sorted   - An array of slot names sorted by a specified sort key 
+           (default sort key is start time of the slot).
 
 =back
 
@@ -8371,13 +8691,16 @@ sorted   - An array of slot names sorted
 
 
 sub sorted_slots {
-    my ($slotsarr,$slots) = @_;
+    my ($slotsarr,$slots,$sortkey) = @_;
+    if ($sortkey eq '') {
+        $sortkey = 'starttime';
+    }
     my @sorted;
     if ((ref($slotsarr) eq 'ARRAY') && (ref($slots) eq 'HASH')) {
         @sorted =
             sort {
                      if (ref($slots->{$a}) && ref($slots->{$b})) {
-                         return $slots->{$a}{'starttime'} <=> $slots->{$b}{'starttime'}
+                         return $slots->{$a}{$sortkey} <=> $slots->{$b}{$sortkey}
                      }
                      if (ref($slots->{$a})) { return -1;}
                      if (ref($slots->{$b})) { return 1;}
@@ -8387,9 +8710,136 @@ sub sorted_slots {
     return @sorted;
 }
 
+=pod
+
+=item * get_future_slots()
+
+Inputs:
+
+=over 4
+
+cnum - course number
+
+cdom - course domain
+
+now - current UNIX time
+
+symb - optional symb
+
+=back
+
+Returns:
+
+=over 4
+
+sorted_reservable - ref to array of student_schedulable slots currently 
+                    reservable, ordered by end date of reservation period.
+
+reservable_now - ref to hash of student_schedulable slots currently
+                 reservable.
+
+    Keys in inner hash are:
+    (a) symb: either blank or symb to which slot use is restricted.
+    (b) endreserve: end date of reservation period. 
+
+sorted_future - ref to array of student_schedulable slots reservable in
+                the future, ordered by start date of reservation period.
+
+future_reservable - ref to hash of student_schedulable slots reservable
+                    in the future.
+
+    Keys in inner hash are:
+    (a) symb: either blank or symb to which slot use is restricted.
+    (b) startreserve:  start date of reservation period.
+
+=back
+
+=cut
+
+sub get_future_slots {
+    my ($cnum,$cdom,$now,$symb) = @_;
+    my (%reservable_now,%future_reservable,@sorted_reservable,@sorted_future);
+    my %slots = &Apache::lonnet::get_course_slots($cnum,$cdom);
+    foreach my $slot (keys(%slots)) {
+        next unless($slots{$slot}->{'type'} eq 'schedulable_student');
+        if ($symb) {
+            next if (($slots{$slot}->{'symb'} ne '') && 
+                     ($slots{$slot}->{'symb'} ne $symb));
+        }
+        if (($slots{$slot}->{'starttime'} > $now) &&
+            ($slots{$slot}->{'endtime'} > $now)) {
+            if (($slots{$slot}->{'allowedsections'}) || ($slots{$slot}->{'allowedusers'})) {
+                my $userallowed = 0;
+                if ($slots{$slot}->{'allowedsections'}) {
+                    my @allowed_sec = split(',',$slots{$slot}->{'allowedsections'});
+                    if (!defined($env{'request.role.sec'})
+                        && grep(/^No section assigned$/,@allowed_sec)) {
+                        $userallowed=1;
+                    } else {
+                        if (grep(/^\Q$env{'request.role.sec'}\E$/,@allowed_sec)) {
+                            $userallowed=1;
+                        }
+                    }
+                    unless ($userallowed) {
+                        if (defined($env{'request.course.groups'})) {
+                            my @groups = split(/:/,$env{'request.course.groups'});
+                            foreach my $group (@groups) {
+                                if (grep(/^\Q$group\E$/,@allowed_sec)) {
+                                    $userallowed=1;
+                                    last;
+                                }
+                            }
+                        }
+                    }
+                }
+                if ($slots{$slot}->{'allowedusers'}) {
+                    my @allowed_users = split(',',$slots{$slot}->{'allowedusers'});
+                    my $user = $env{'user.name'}.':'.$env{'user.domain'};
+                    if (grep(/^\Q$user\E$/,@allowed_users)) {
+                        $userallowed = 1;
+                    }
+                }
+                next unless($userallowed);
+            }
+            my $startreserve = $slots{$slot}->{'startreserve'};
+            my $endreserve = $slots{$slot}->{'endreserve'};
+            my $symb = $slots{$slot}->{'symb'};
+            if (($startreserve < $now) &&
+                (!$endreserve || $endreserve > $now)) {
+                my $lastres = $endreserve;
+                if (!$lastres) {
+                    $lastres = $slots{$slot}->{'starttime'};
+                }
+                $reservable_now{$slot} = {
+                                           symb       => $symb,
+                                           endreserve => $lastres
+                                         };
+            } elsif (($startreserve > $now) &&
+                     (!$endreserve || $endreserve > $startreserve)) {
+                $future_reservable{$slot} = {
+                                              symb         => $symb,
+                                              startreserve => $startreserve
+                                            };
+            }
+        }
+    }
+    my @unsorted_reservable = keys(%reservable_now);
+    if (@unsorted_reservable > 0) {
+        @sorted_reservable = 
+            &sorted_slots(\@unsorted_reservable,\%reservable_now,'endreserve');
+    }
+    my @unsorted_future = keys(%future_reservable);
+    if (@unsorted_future > 0) {
+        @sorted_future =
+            &sorted_slots(\@unsorted_future,\%future_reservable,'startreserve');
+    }
+    return (\@sorted_reservable,\%reservable_now,\@sorted_future,\%future_reservable);
+}
 
 =pod
 
+=back
+
 =head1 HTTP Helpers
 
 =over 4
@@ -9281,6 +9731,750 @@ sub check_for_traversal {
     return $cleanpath;
 }
 
+sub is_archive_file {
+    my ($mimetype) = @_;
+    if (($mimetype eq 'application/octet-stream') ||
+        ($mimetype eq 'application/x-stuffit') ||
+        ($mimetype =~ m{^application/(x\-)?(compressed|tar|zip|tgz|gz|gtar|gzip|gunzip|bz|bz2|bzip2)})) {
+        return 1;
+    }
+    return;
+}
+
+sub decompress_form {
+    my ($mimetype,$archiveurl,$action,$noextract,$hiddenelements) = @_;
+    my %lt = &Apache::lonlocal::texthash (
+        this => 'This file is an archive file.',
+        youm => 'You may wish to extract its contents.',
+        camt => 'Extraction of contents is recommended for Camtasia zip files.',
+        perm => 'Permanently remove archive file after extraction of contents?',
+        extr => 'Extract contents',
+        yes  => 'Yes',
+        no   => 'No',
+    );
+    my $output = '<p>'.$lt{'this'}.' '.$lt{'youm'}.'<br />';
+    if ($mimetype =~ m{^application/(x\-)?(compressed|zip)}) {
+        $output .= $lt{'camt'};
+    }
+    $output .= '</p>';
+    $output .= <<"START";
+<div id="uploadfileresult">
+  <form name="uploaded_decompress" action="$action" method="post">
+  <input type="hidden" name="archiveurl" value="$archiveurl" />
+START
+    if (ref($hiddenelements) eq 'HASH') {
+        foreach my $hidden (sort(keys(%{$hiddenelements}))) {
+            $output .= '<input type="hidden" name="'.$hidden.'" value="'.$hiddenelements->{$hidden}.'" />'."\n";
+        }
+    }
+    $output .= <<"END";
+<span class="LC_nobreak">$lt{'perm'}&nbsp;
+<label><input type="radio" name="archivedelete" value="0" checked="checked" />$lt{'no'}</label>&nbsp;&nbsp;
+<label><input type="radio" name="archivedelete" value="1" />$lt{'yes'}</label></span><br />
+<input type="submit" name="decompress" value="$lt{'extr'}" />
+</form>
+$noextract
+</div>
+END
+    return $output;
+}
+
+sub decompress_uploaded_file {
+    my ($file,$dir) = @_;
+    &Apache::lonnet::appenv({'cgi.file' => $file});
+    &Apache::lonnet::appenv({'cgi.dir' => $dir});
+    my $result = &Apache::lonnet::ssi_body('/cgi-bin/decompress.pl');
+    my ($handle) = ($env{'user.environment'} =~m{/([^/]+)\.id$});
+    my $lonidsdir = $Apache::lonnet::perlvar{'lonIDsDir'};
+    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle,1);
+    my $decompressed = $env{'cgi.decompressed'};
+    &Apache::lonnet::delenv('cgi.file');
+    &Apache::lonnet::delenv('cgi.dir');
+    &Apache::lonnet::delenv('cgi.decompressed');
+    return ($decompressed,$result);
+}
+
+sub process_decompression {
+    my ($docudom,$docuname,$file,$destination,$dir_root,$hiddenelem) = @_;
+    my ($dir,$error,$warning,$output);
+    if ($file !~ /\.(zip|tar|bz2|gz|tar.gz|tar.bz2|tgz)$/) {
+        $error = &mt('File name not a supported archive file type.').
+                 '<br />'.&mt('File name should end with one of: [_1].',
+                              '.zip, .tar, .bz2, .gz, .tar.gz, .tar.bz2, .tgz');
+    } else {
+        my $docuhome = &Apache::lonnet::homeserver($docuname,$docudom);
+        if ($docuhome eq 'no_host') {
+            $error = &mt('Could not determine home server for course.');
+        } else {
+            my @ids=&Apache::lonnet::current_machine_ids();
+            my $currdir = "$dir_root/$destination";
+            my ($currdirlistref,$currlisterror) =
+                &Apache::lonnet::dirlist($currdir,$docudom,$docuname,1);
+            if (grep(/^\Q$docuhome\E$/,@ids)) {
+                $dir = &LONCAPA::propath($docudom,$docuname).
+                       "$dir_root/$destination";
+            } else {
+                $dir = $Apache::lonnet::perlvar{'lonDocRoot'}.
+                       "$dir_root/$docudom/$docuname/$destination";
+                unless (&Apache::lonnet::repcopy_userfile("$dir/$file") eq 'ok') {
+                    $error = &mt('Archive file not found.');
+                }
+            }
+            if ($dir eq '') {
+                $error = &mt('Directory containing archive file unavailable.');
+            } elsif (!$error) {
+                my ($decompressed,$display) = &decompress_uploaded_file($file,$dir);
+                if ($decompressed eq 'ok') {
+                    $output = &mt('Files extracted successfully from archive.').'<br />';
+                    my ($warning,$result,@contents);
+                    my ($newdirlistref,$newlisterror) =
+                        &Apache::lonnet::dirlist($currdir,$docudom,
+                                                 $docuname,1);
+                    my (%is_dir,%changes,@newitems);
+                    my $dirptr = 16384;
+                    if (ref($currdirlistref) eq 'ARRAY') {
+                        my @curritems;
+                        foreach my $dir_line (@{$currdirlistref}) {
+                            my ($item,$rest)=split(/\&/,$dir_line,2);
+                            unless ($item =~ /\.+$/) {
+                                push(@curritems,$item);
+                            }
+                        }
+                        if (ref($newdirlistref) eq 'ARRAY') {
+                            foreach my $dir_line (@{$newdirlistref}) {
+                                my ($item,undef,undef,$testdir)=split(/\&/,$dir_line,4);
+                                unless ($item =~ /^\.+$/) {
+                                    if ($dirptr&$testdir) {
+                                        $is_dir{$item} = 1;
+                                    }
+                                    push(@newitems,$item);
+                                }
+                            }
+                            my @diffs = &compare_arrays(\@curritems,\@newitems);
+                            if (@diffs > 0) {
+                               foreach my $item (@diffs) {
+                                   $changes{$item} = 1;
+                               }
+                            }
+                        }
+                    } elsif (ref($newdirlistref) eq 'ARRAY') {
+                        foreach my $dir_line (@{$newdirlistref}) {
+                            my ($item,undef,undef,$testdir)=split(/\&/,$dir_line,5);
+                            unless ($item =~ /\.+$/) {
+                                push(@newitems,$item);
+                                if ($dirptr&$testdir) {
+                                    $is_dir{$item} = 1;
+                                }
+                                $changes{$item} = 1;
+                            }
+                        }
+                    }
+                    if (keys(%changes) > 0) {
+                        foreach my $item (sort(@newitems)) {
+                            if ($changes{$item}) {
+                                push(@contents,$item);
+                            }
+                        }
+                    }
+                    if (@contents > 0) {
+                        my (%children,%parent,%dirorder,%titles);
+                        my $wantform = 1;
+                        my ($count,$datatable) = &get_extracted($docudom,$docuname,
+                                                                $currdir,\%is_dir,
+                                                                \%children,\%parent,
+                                                                \@contents,\%dirorder,
+                                                                \%titles,$wantform);
+                        if ($datatable ne '') {
+                            $output .= &archive_options_form('decompressed',$datatable,
+                                                             $count,$hiddenelem);
+                            my $startcount = 4;
+                            $output .= &archive_javascript($startcount,$count,
+                                                           \%titles,\%children);
+                        }
+                    } else {
+                        $warning = &mt('No new items extracted from archive file.');
+                    }
+                } else {
+                    $output = $display;
+                    $error = &mt('An error occurred during extraction from the archive file.');
+                }
+            }
+        }
+    }
+    if ($error) {
+        $output .= '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+                   $error.'</p>'."\n";
+    }
+    if ($warning) {
+        $output .= '<p class="LC_warning">'.$warning.'</p>'."\n";
+    }
+    return $output;
+}
+
+sub get_extracted {
+    my ($docudom,$docuname,$currdir,$is_dir,$children,$parent,$contents,$dirorder,
+        $titles,$wantform) = @_;
+    my $count = 0;
+    my $depth = 0;
+    my $datatable;
+    my @hierarchy;
+    return unless ((ref($is_dir) eq 'HASH') && (ref($children) eq 'HASH') &&
+                   (ref($parent) eq 'HASH') && (ref($contents) eq 'ARRAY') &&
+                   (ref($dirorder) eq 'HASH') && (ref($titles) eq 'HASH'));
+    foreach my $item (@{$contents}) {
+        $count ++;
+        @{$dirorder->{$count}} = @hierarchy;
+        $titles->{$count} = $item;
+        &archive_hierarchy($depth,$count,$parent,$children);
+        if ($wantform) {
+            $datatable .= &archive_row($is_dir->{$item},$item,
+                                       $currdir,$depth,$count);
+        }
+        if ($is_dir->{$item}) {
+            $depth ++;
+            push(@hierarchy,$count);
+            $parent->{$depth} = $count;
+            $datatable .=
+                &recurse_extracted_archive("$currdir/$item",$docudom,$docuname,
+                                           \$depth,\$count,\@hierarchy,$dirorder,
+                                           $children,$parent,$titles,$wantform);
+            $depth --;
+            pop(@hierarchy);
+        }
+    }
+    return ($count,$datatable);
+}
+
+sub recurse_extracted_archive {
+    my ($currdir,$docudom,$docuname,$depth,$count,$hierarchy,$dirorder,
+        $children,$parent,$titles,$wantform) = @_;
+    my $result='';
+    unless ((ref($depth)) && (ref($count)) && (ref($hierarchy) eq 'ARRAY') &&
+            (ref($children) eq 'HASH') && (ref($parent) eq 'HASH') &&
+            (ref($dirorder) eq 'HASH')) {
+        return $result;
+    }
+    my $dirptr = 16384;
+    my ($newdirlistref,$newlisterror) =
+        &Apache::lonnet::dirlist($currdir,$docudom,$docuname,1);
+    if (ref($newdirlistref) eq 'ARRAY') {
+        foreach my $dir_line (@{$newdirlistref}) {
+            my ($item,undef,undef,$testdir)=split(/\&/,$dir_line,5);
+            unless ($item =~ /^\.+$/) {
+                $$count ++;
+                @{$dirorder->{$$count}} = @{$hierarchy};
+                $titles->{$$count} = $item;
+                &archive_hierarchy($$depth,$$count,$parent,$children);
+
+                my $is_dir;
+                if ($dirptr&$testdir) {
+                    $is_dir = 1;
+                }
+                if ($wantform) {
+                    $result .= &archive_row($is_dir,$item,$currdir,$$depth,$$count);
+                }
+                if ($is_dir) {
+                    $$depth ++;
+                    push(@{$hierarchy},$$count);
+                    $parent->{$$depth} = $$count;
+                    $result .=
+                        &recurse_extracted_archive("$currdir/$item",$docudom,
+                                                   $docuname,$depth,$count,
+                                                   $hierarchy,$dirorder,$children,
+                                                   $parent,$titles,$wantform);
+                    $$depth --;
+                    pop(@{$hierarchy});
+                }
+            }
+        }
+    }
+    return $result;
+}
+
+sub archive_hierarchy {
+    my ($depth,$count,$parent,$children) =@_;
+    if ((ref($parent) eq 'HASH') && (ref($children) eq 'HASH')) {
+        if (exists($parent->{$depth})) {
+             $children->{$parent->{$depth}} .= $count.':';
+        }
+    }
+    return;
+}
+
+sub archive_row {
+    my ($is_dir,$item,$currdir,$depth,$count) = @_;
+    my ($name) = ($item =~ m{([^/]+)$});
+    my %choices = &Apache::lonlocal::texthash (
+                                       'display'    => 'Add as file',
+                                       'dependency' => 'Include as dependency',
+                                       'discard'    => 'Discard',
+                                      );
+    if ($is_dir) {
+        $choices{'display'} = &mt('Add as folder'); 
+    }
+    my $output = &start_data_table_row().'<td align="right">'.$count.'</td>'."\n";
+    my $offset = 0;
+    foreach my $action ('display','dependency','discard') {
+        $offset ++;
+        $output .= '<td><span class="LC_nobreak">'.
+                   '<label><input type="radio" name="archive_'.$count.
+                   '" id="archive_'.$action.'_'.$count.'" value="'.$action.'"';
+        my $text = $choices{$action};
+        if ($is_dir) {
+            $output .= ' onclick="javascript:propagateCheck(this.form,'."'$count'".');"';
+            if ($action eq 'display') {
+                $text = &mt('Add as folder');
+            }
+        } else {
+            $output .= ' onclick="javascript:dependencyCheck(this.form,'."$count,$offset".');"';
+
+        }
+        $output .= ' />&nbsp;'.$choices{$action}.'</label></span>';
+        if ($action eq 'dependency') {
+            $output .= '<div id="arc_depon_'.$count.'" style="display:none;">'."\n".
+                       &mt('Used by:').'&nbsp;<select name="archive_dependent_on_'.$count.'" '.
+                       'onchange="propagateSelect(this.form,'."$count,$offset".')">'."\n".
+                       '<option value=""></option>'."\n".
+                       '</select>'."\n".
+                       '</div>';
+        } elsif ($action eq 'display') {
+            $output .= '<div id="arc_title_'.$count.'" style="display:none;">'."\n".
+                       &mt('Title:').'&nbsp;<input type="text" name="archive_title_'.$count.'" id="archive_title_'.$count.'" />'."\n".
+                       '</div>';
+        }
+        $output .= '</td>';
+    }
+    $output .= '<td><input type="hidden" name="archive_content_'.$count.'" value="'.
+               &HTML::Entities::encode("$currdir/$item",'"<>&').'" />'.('&nbsp;' x 2);
+    for (my $i=0; $i<$depth; $i++) {
+        $output .= ('<img src="/adm/lonIcons/whitespace1.gif" class="LC_docs_spacer" alt="" />' x2)."\n";
+    }
+    if ($is_dir) {
+        $output .= '<img src="/adm/lonIcons/navmap.folder.open.gif" alt="" />&nbsp;'."\n".
+                   '<input type="hidden" name="archive_directory" value="'.$count.'" />'."\n";
+    } else {
+        $output .= '<input type="hidden" name="archive_file" value="'.$count.'" />'."\n";
+    }
+    $output .= '&nbsp;'.$name.'</td>'."\n".
+               &end_data_table_row();
+    return $output;
+}
+
+sub archive_options_form {
+    my ($form,$output,$count,$hiddenelem) = @_;
+    return '<form name="'.$form.'" method="post" action="">'."\n".
+           '<input type="hidden" name="phase" value="decompress_cleanup" />'."\n".
+                    '<p>'.
+                    &mt('How should each item be incorporated in the course?').
+                    '</p>'.
+                    '<div class="LC_columnSection"><fieldset>'.
+                    '<legend>'.&mt('Content actions for all').'</legend>'.
+                    '<input type="button" value="'.&mt('Add as folder/file').'" '.
+                    'onclick="javascript:checkAll(document.'.$form.",'display'".')" />'.
+                    '&nbsp;&nbsp;<input type="button" value="'.&mt('Include as dependency for a displayed file').'"'.
+                    ' onclick="javascript:checkAll(document.'.$form.",'dependency'".')" />'.
+                    '&nbsp;&nbsp;<input type="button" value="'.&mt('Discard').'"'.
+                    ' onclick="javascript:checkAll(document.'.$form.",'discard'".')" />'.
+                     '</fieldset></div>'.
+           &start_data_table()."\n".
+           $output."\n".
+           &end_data_table()."\n".
+           '<input type="hidden" name="archive_count" value="'.$count.'" />'.
+           $hiddenelem.
+           '<br /><input type="submit" name="archive_submit" value="'.&mt('Save').'" />'.
+           '</form>';
+}
+
+sub archive_javascript {
+    my ($startcount,$numitems,$titles,$children) = @_;
+    return unless ((ref($titles) eq 'HASH') && (ref($children) eq 'HASH'));
+    my $maintitle = $env{'form.comment'};
+    my $scripttag = <<START;
+<script type="text/javascript">
+// <![CDATA[
+
+function checkAll(form,prefix) {
+    var idstr =  new RegExp("^archive_"+prefix+"_\\\\d+\$");
+    for (var i=0; i < form.elements.length; i++) {
+        var id = form.elements[i].id;
+        if ((id != '') && (id != undefined)) {
+            if (idstr.test(id)) {
+                if (form.elements[i].type == 'radio') {
+                    form.elements[i].checked = true;
+                    var nostart = i-$startcount;
+                    var offset = nostart%7;
+                    var count = (nostart-offset)/7;    
+                    dependencyCheck(form,count,offset);
+                }
+            }
+        }
+    }
+}
+
+function propagateCheck(form,count) {
+    if (count > 0) {
+        var startelement = $startcount + ((count-1) * 7);
+        for (var j=1; j<6; j++) {
+            if ((j != 2) && (j != 4)) {
+                var item = startelement + j; 
+                if (form.elements[item].type == 'radio') {
+                    if (form.elements[item].checked) {
+                        containerCheck(form,count,j);
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+
+numitems = $numitems
+var titles = new Array(numitems);
+var parents = new Array(numitems);
+for (var i=0; i<numitems; i++) {
+    parents[i] = new Array;
+}
+var maintitle = '$maintitle';
+
+START
+
+    foreach my $container (sort { $a <=> $b } (keys(%{$children}))) {
+        my @contents = split(/:/,$children->{$container});
+        for (my $i=0; $i<@contents; $i ++) {
+            $scripttag .= 'parents['.$container.']['.$i.'] = '.$contents[$i]."\n";
+        }
+    }
+
+    foreach my $key (sort { $a <=> $b } (keys(%{$titles}))) {
+        $scripttag .= "titles[$key] = '".$titles->{$key}."';\n";
+    }
+
+    $scripttag .= <<END;
+
+function containerCheck(form,count,offset) {
+    if (count > 0) {
+        dependencyCheck(form,count,offset);
+        var item = (offset+$startcount)+7*(count-1);
+        form.elements[item].checked = true;
+        if(Object.prototype.toString.call(parents[count]) === '[object Array]') {
+            if (parents[count].length > 0) {
+                for (var j=0; j<parents[count].length; j++) {
+                    containerCheck(form,parents[count][j],offset);
+                }
+            }
+        }
+    }
+}
+
+function dependencyCheck(form,count,offset) {
+    if (count > 0) {
+        var chosen = (offset+$startcount)+7*(count-1);
+        var depitem = $startcount + ((count-1) * 7) + 4;
+        var currtype = form.elements[depitem].type;
+        if (form.elements[chosen].value == 'dependency') {
+            document.getElementById('arc_depon_'+count).style.display='block'; 
+            form.elements[depitem].options.length = 0;
+            form.elements[depitem].options[0] = new Option('Select','',true,true);
+            for (var i=1; i<count; i++) {
+                var startelement = $startcount + (i-1) * 7;
+                for (var j=1; j<6; j++) {
+                    if ((j != 2) && (j!= 4)) {
+                        var item = startelement + j;
+                        if (form.elements[item].type == 'radio') {
+                            if (form.elements[item].checked) {
+                                if (form.elements[item].value == 'display') {
+                                    var n = form.elements[depitem].options.length;
+                                    form.elements[depitem].options[n] = new Option(titles[i],i,false,false);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        } else {
+            document.getElementById('arc_depon_'+count).style.display='none';
+            form.elements[depitem].options.length = 0;
+            form.elements[depitem].options[0] = new Option('Select','',true,true);
+        }
+        titleCheck(form,count,offset);
+    }
+}
+
+function propagateSelect(form,count,offset) {
+    if (count > 0) {
+        var item = (2+offset+$startcount)+7*(count-1);
+        var picked = form.elements[item].options[form.elements[item].selectedIndex].value; 
+        if (Object.prototype.toString.call(parents[count]) === '[object Array]') {
+            if (parents[count].length > 0) {
+                for (var j=0; j<parents[count].length; j++) {
+                    containerSelect(form,parents[count][j],offset,picked);
+                }
+            }
+        }
+    }
+}
+
+function containerSelect(form,count,offset,picked) {
+    if (count > 0) {
+        var item = (1+offset+$startcount)+7*(count-1);
+        if (form.elements[item].type == 'radio') {
+            if (form.elements[item].value == 'dependency') {
+                if (form.elements[item+1].type == 'select-one') {
+                    for (var i=0; i<form.elements[item+1].options.length; i++) {
+                        if (form.elements[item+1].options[i].value == picked) {
+                            form.elements[item+1].selectedIndex = i;
+                            break;
+                        }
+                    }
+                }
+                if (Object.prototype.toString.call(parents[count]) === '[object Array]') {
+                    if (parents[count].length > 0) {
+                        for (var j=0; j<parents[count].length; j++) {
+                            containerSelect(form,parents[count][j],offset,picked);
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+function titleCheck(form,count,offset) {
+    if (count > 0) {
+        var chosen = (offset+$startcount)+7*(count-1);
+        var depitem = $startcount + ((count-1) * 7) + 2;
+        var currtype = form.elements[depitem].type;
+        if (form.elements[chosen].value == 'display') {
+            document.getElementById('arc_title_'+count).style.display='block';
+            if ((count==1) && ((parents[count].length > 0) || (numitems == 1))) {
+                document.getElementById('archive_title_'+count).value=maintitle;
+            }
+        } else {
+            document.getElementById('arc_title_'+count).style.display='none';
+            if (currtype == 'text') { 
+                document.getElementById('archive_title_'+count).value='';
+            }
+        }
+    }
+    return;
+}
+
+// ]]>
+</script>
+END
+    return $scripttag;
+}
+
+sub process_extracted_files {
+    my ($context,$docudom,$docuname,$destination,$dir_root,$hiddenelem) = @_;
+    my $numitems = $env{'form.archive_count'};
+    return unless ($numitems);
+    my @ids=&Apache::lonnet::current_machine_ids();
+    my ($prefix,$pathtocheck,$dir,$ishome,$error,$warning,%toplevelitems,%is_dir,
+        %folders,%containers,%mapinner);
+    my $docuhome = &Apache::lonnet::homeserver($docuname,$docudom);
+    if (grep(/^\Q$docuhome\E$/,@ids)) {
+        $prefix = &LONCAPA::propath($docudom,$docuname);
+        $pathtocheck = "$dir_root/$destination";
+        $dir = $dir_root;
+        $ishome = 1;
+    } else {
+        $prefix = $Apache::lonnet::perlvar{'lonDocRoot'};
+        $pathtocheck = "$dir_root/$docudom/$docuname/$destination";
+        $dir = "$dir_root/$docudom/$docuname";    
+    }
+    my $currdir = "$dir_root/$destination";
+    (my $docstype,$mapinner{'0'}) = ($destination =~ m{^(docs|supplemental)/(\w+)/});
+    if ($env{'form.folderpath'}) {
+        my @items = split('&',$env{'form.folderpath'});
+        $folders{'0'} = $items[-2];
+        $containers{'0'}='sequence';
+    } elsif ($env{'form.pagepath'}) {
+        my @items = split('&',$env{'form.pagepath'});
+        $folders{'0'} = $items[-2];
+        $containers{'0'}='page';
+    }
+    my @archdirs = &get_env_multiple('form.archive_directory');
+    if ($numitems) {
+        for (my $i=1; $i<=$numitems; $i++) {
+            my $path = $env{'form.archive_content_'.$i};
+            if ($path =~ m{^\Q$pathtocheck\E/([^/]+)$}) {
+                my $item = $1;
+                $toplevelitems{$item} = $i;
+                if (grep(/^\Q$i\E$/,@archdirs)) {
+                    $is_dir{$item} = 1;
+                }
+            }
+        }
+    }
+    my ($output,%children,%parent,%titles,%dirorder);
+    if (keys(%toplevelitems) > 0) {
+        my @contents = sort(keys(%toplevelitems));
+        (my $count,undef) = &get_extracted($docudom,$docuname,$currdir,\%is_dir,\%children,
+                                           \%parent,\@contents,\%dirorder,\%titles);
+    }
+    my (%referrer,%orphaned,%todelete,%newdest,%newseqid);
+    if ($numitems) {
+        for (my $i=1; $i<=$numitems; $i++) {
+            my $path = $env{'form.archive_content_'.$i};
+            if ($path =~ /^\Q$pathtocheck\E/) {
+                if ($env{'form.archive_'.$i} eq 'discard') {
+                    if ($prefix ne '' && $path ne '') {
+                        if (-e $prefix.$path) {
+                            $todelete{$prefix.$path} = 1;
+                        }
+                    }
+                } elsif ($env{'form.archive_'.$i} eq 'display') {
+                    my ($docstitle,$title,$url,$outer);
+                    ($title) = ($path =~ m{/([^/]+)$});
+                    $docstitle = $env{'form.archive_title_'.$i};
+                    if ($docstitle eq '') {
+                        $docstitle = $title;
+                    }
+                    $outer = 0;
+                    if (ref($dirorder{$i}) eq 'ARRAY') {
+                        if (@{$dirorder{$i}} > 0) {
+                            foreach my $item (reverse(@{$dirorder{$i}})) {
+                                if ($env{'form.archive_'.$item} eq 'display') {
+                                    $outer = $item;
+                                    last;
+                                }
+                            }
+                        }
+                    }
+                    my ($errtext,$fatal) = 
+                        &LONCAPA::map::mapread('/uploaded/'.$docudom.'/'.$docuname.
+                                               '/'.$folders{$outer}.'.'.
+                                               $containers{$outer});
+                    next if ($fatal);
+                    if ((@archdirs > 0) && (grep(/^\Q$i\E$/,@archdirs))) {
+                        if ($context eq 'coursedocs') {
+                            $mapinner{$i} = time;
+                            $folders{$i} = 'default_'.$mapinner{$i};
+                            $containers{$i} = 'sequence';
+                            my $url = '/uploaded/'.$docudom.'/'.$docuname.'/'.
+                                      $folders{$i}.'.'.$containers{$i};
+                            my $newidx = &LONCAPA::map::getresidx();
+                            $LONCAPA::map::resources[$newidx]=
+                                $docstitle.':'.$url.':false:normal:res';
+                            push(@LONCAPA::map::order,$newidx);
+                            my ($outtext,$errtext) =
+                                &LONCAPA::map::storemap('/uploaded/'.$docudom.'/'.
+                                                        $docuname.'/'.$folders{$outer}.
+                                                        '.'.$containers{$outer},1);
+                            $newseqid{$i} = $newidx;
+                        }
+                    } else {
+                        if ($context eq 'coursedocs') {
+                            my $newidx=&LONCAPA::map::getresidx();
+                            my $url = '/uploaded/'.$docudom.'/'.$docuname.'/'.
+                                      $docstype.'/'.$mapinner{$outer}.'/'.$newidx.'/'.
+                                      $title;
+                            if (!-e "$prefix$dir/$docstype/$mapinner{$outer}") {
+                                mkdir("$prefix$dir/$docstype/$mapinner{$outer}",0755);
+                            }
+                            if (!-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
+                                mkdir("$prefix$dir/$docstype/$mapinner{$outer}/$newidx");
+                            }
+                            if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
+                                system("mv $prefix$path $prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title");
+                                $newdest{$i} = "$prefix$dir/$docstype/$mapinner{$outer}/$newidx";
+                            }
+                            $LONCAPA::map::resources[$newidx]=
+                                $docstitle.':'.$url.':false:normal:res';
+                            push(@LONCAPA::map::order, $newidx);
+                            my ($outtext,$errtext)=
+                                &LONCAPA::map::storemap('/uploaded/'.$docudom.'/'.
+                                                        $docuname.'/'.$folders{$outer}.
+                                                        '.'.$containers{$outer},1);
+                        }
+                    }
+                } elsif ($env{'form.archive_'.$i} eq 'dependency') {
+                    my ($title) = ($path =~ m{/([^/]+)$});
+                    $referrer{$i} = $env{'form.archive_dependent_on_'.$i};
+                    if ($env{'form.archive_'.$referrer{$i}} eq 'display') {
+                        if (ref($dirorder{$i}) eq 'ARRAY') {
+                            my ($itemidx,$fullpath);
+                            for (my $j=0; $j<@{$dirorder{$i}}; $j++) {
+                                if (ref($dirorder{$referrer{$i}}) eq 'ARRAY') {
+                                    my $container = $dirorder{$referrer{$i}}->[-1];
+                                    for (my $j=0; $j<@{$dirorder{$i}}; $j++) {
+                                        if ($dirorder{$i}->[$j] eq $container) {
+                                            $itemidx = $j;
+                                        }
+                                    }
+                                }
+                            }
+                            if ($itemidx ne '') {
+                                if (grep(/^\Q$referrer{$i}\E$/,@archdirs)) {
+                                    if ($mapinner{$referrer{$i}}) {
+                                        $fullpath = "$prefix$dir/$docstype/$mapinner{$referrer{$i}}";
+                                        for (my $j=$itemidx; $j<@{$dirorder{$i}}; $j++) {
+                                            if (grep(/^\Q$dirorder{$i}->[$j]\E$/,@archdirs)) {
+                                                unless (defined($newseqid{$dirorder{$i}->[$j]})) {
+                                                    $fullpath .= '/'.$titles{$dirorder{$i}->[$j]};
+                                                    if (!-e $fullpath) {
+                                                        mkdir($fullpath,0755);
+                                                    }
+                                                }
+                                            } else {
+                                                last;
+                                            }
+                                        }
+                                    }
+                                } elsif ($newdest{$referrer{$i}}) {
+                                    $fullpath = $newdest{$referrer{$i}};
+                                    for (my $j=$itemidx; $j<@{$dirorder{$i}}; $j++) {
+                                        if ($env{'form.archive_'.$dirorder{$i}->[$j]} eq 'discard') {
+                                            $orphaned{$i} = $env{'form.archive_'.$dirorder{$i}->[$j]};
+                                            last;
+                                        } elsif (grep(/^\Q$dirorder{$i}->[$j]\E$/,@archdirs)) {
+                                            unless (defined($newseqid{$dirorder{$i}->[$j]})) {
+                                                $fullpath .= '/'.$titles{$dirorder{$i}->[$j]};
+                                                if (!-e $fullpath) {
+                                                    mkdir($fullpath,0755);
+                                                }
+                                            }
+                                        } else {
+                                            last;
+                                        }
+                                    }
+                                }
+                                if ($fullpath ne '') {
+                                    system("mv $prefix$path $fullpath/$title");
+                                }
+                            }
+                        }
+                    } elsif ($env{'form.archive_'.$referrer{$i}} eq 'discard') {
+                        $warning .= &mt('[_1] is a dependency of [_2], which was discarded.',
+                                        $path,$env{'form.archive_content_'.$referrer{$i}}).'<br />';
+                    }
+                }
+            } else {
+                $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',$path).'<br />'; 
+            }
+        }
+        if (keys(%todelete)) {
+            foreach my $key (keys(%todelete)) {
+                unlink($key);
+                unless ($ishome) {
+                    #FIXME Need to notify homeserver to delete files.
+                }
+            }
+        }
+    } else {
+        $warning = &mt('No items found in archive.');
+    }
+    if ($error) {
+        $output .= '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+                   $error.'</p>'."\n";
+    }
+    if ($warning) {
+        $output .= '<p class="LC_warning">'.$warning.'</p>'."\n";
+    }
+    return $output;
+}
+
 =pod
 
 =item * &get_turnedin_filepath()